CN1049984C - Process cartridge, image forming system mountable same therein and method for assembling cleaning device - Google Patents

Abstract

An image bearing member, process device acting on the image bearing member, a first frame, a second frame lockable and separable with respect to the first frame, a locking body and a locking member lockable to the locking body, provided to separably interlock the first and second frames, and a recessed portion and a projection fittable into the recessed portion which are provided to separably interlock the first and second frames. With above construction it is possible to provide a process cartridge, an image forming system, and a method for assembling a cleaning device, which can be easily assembled and can sufficiently cope a large when the number of re-cycles.

Description

The method that handle box, device have the imaging system of this handle box and be used to assemble cleaning device

The present invention relates to a kind of handle box, a kind of imaging system that installs this handle box, and a kind of method that is used to assemble cleaning device.This imaging system for example can be embodied as Xerox, laser printer, facsimile recorder, word processor or the like.

In imaging system such as duplicating machine one class, form latent image by carrying of uniform charging being resembled the intermittent exposure of part do, with toner latent image is developed again and be toner image, then this toner image be sent on the recording chart, and imaging on recording chart.In this class imaging system, no matter when use up toner after, all must load new toner.The operation of loading toner not only bothers, and usually causes environmental pollution.Moreover, since in this technology can only by the expert safeguard various parts or parts thereby most of user can feel inconvenience.

In order to eliminate above-mentioned defective and inconvenience, for example a kind ofly gone on the market already and dropped among the imaging system of actual use in that United States Patent (USP) No. 3985436, No. 4500195, No. 4540268 and No. 4627701 are disclosed, it resembles part by carrying, charger, developing device and cleaning device are always dressed up a handle box that can be assemblied in removably in this imaging system, make the developing tube that used up such as toner in the imaging system or crossed carrying of useful life period to resemble part etc. and can easily change, thereby made things convenient for maintenance.

In above-mentioned handle box, the framework of handle box is divided into upper ledge and adds lower frame two parts to improve its assemble ability (Japanese patent application 2-301779 number, No. 785401, USSN, EP-A91402953.3 number, Chinese patent application 91-19663 number and korean patent application 91-19663 number), moreover above-mentioned upper ledge and lower frame are bonded with each other by screw, perhaps be assemblied in the locking hole that is formed in another frame, upper ledge and lower frame are mutually locked by the locking pawl that will be formed in this framework on the frame.

Yet above-mentioned interconnection technique has following shortcoming:

When upper ledge only engaged with screw with lower frame, slit in order to eliminate between the bonding frame or breach must use a large amount of screws, thereby its assemble ability is descended and caused the increase of expense.

On the other hand, when adopting the connected mode in locking pawl and locking hole,, be no problem if this upper ledge and lower frame have enough hardness.But if the hardness of two frames is not enough, relative displacement will take place in upper ledge and lower frame easily.Moreover, when operating personnel are connected upper ledge with lower frame, might between two frames, produce the space and damage the locking pawl.

Moreover when the recycling number of times of same handle box increased, the locking force between locking pawl and the locking hole just can reduce or lose.

In addition, if said modules is installed on this handle box in the mode of press fit, when the recycling number of times of same handle box increases, will produce the slit at joint.

Particularly, from the angle of the environment of preserving our planet, wish very much recycling this handle box of energy, like this, just wishing to provide a kind of recycling handle box that is easier to." recycling " of managing box herein is to be meant the fact that the handle box used of collecting from the market, take them apart only replacing useless and/or bad (having consumed) parts (miscellaneous part can be exercised usefulness again), then this cartridge is made into a new handle box.

Subsidiary pointing out in No. 3985436, above-mentioned United States Patent (USP), used the relative assembly of the schedule time to come the fact of being utilized again (the 16 row 38-62 that relate to wherein are capable) though described collection, do not have relevant recycling specific descriptions.

One object of the present invention is to provide a kind of handle box; A kind of this handle box that loads is in imaging system wherein; And a kind of method that is used to assemble cleaning device, and this handle box can be recycling.

Another object of the present invention provides a kind of handle box; A kind of this handle box that loads is in imaging system wherein; And a kind of method that is used to assemble cleaning device, and this handle box can be fit to do recycled for multiple times.

Another purpose of the present invention provides a kind of handle box; A kind of this handle box that loads is in imaging system wherein; And a kind of method that is used to assemble cleaning device, this kind handle box can improve assemble ability significantly.

Another purpose again of the present invention provides a kind of handle box; A kind of this handle box that loads is in imaging system wherein; And a kind of method that is used to assemble cleaning device, this handle box can improve ability to dismantle significantly.

Another purpose of the present invention provides a kind of handle box; A kind of this handle box that loads is in imaging system wherein; And a kind of method that is used to assemble cleaning device, wherein, the handle box of collecting from the market with crossing can be dismantled effectively and can be recycling.

Another object of the present invention provides a kind of handle box; A kind of this handle box that loads is in imaging system wherein; And a kind of method that is used to assemble cleaning device, this handle box can adapt to recycled for multiple times fully.

Another purpose again of the present invention provides a kind of handle box; A kind of this handle box that loads is in imaging system wherein; And a kind of method that is used to assemble cleaning device, this handle box can be guaranteed the mutually firm repeatedly locking of upper ledge and lower frame.

Another object of the present invention provides a kind of handle box; A kind of this handle box that loads is in imaging system wherein; And a kind of method that is used to assemble cleaning device, wherein each relevant parts can be installed repeatedly.In the accompanying drawings,

Fig. 1 is the front elevational view of a duplicating machine, and the handle box of a most preferred embodiment of the present invention has been installed in this duplicating machine.

Fig. 2 is the skeleton view of the duplicating machine under the sheet feed stacker open mode.

Fig. 3 is the skeleton view of the duplicating machine under the sheet feed stacker closed condition.

Fig. 4 is the profile in elevation of this handle box.

Fig. 5 is the skeleton view of this handle box.

Fig. 6 is the skeleton view of this handle box under the inversion state.

Fig. 7 is the decomposing section of this handle box when two frames are in released state up and down.

Fig. 8 shows the in-built skeleton view of this lower frame.

Fig. 9 shows the in-built skeleton view of this upper ledge.

Figure 10 is the sectional side elevation of the photosensitive drum of this handle box.

Figure 11 is used to illustrate the synoptic diagram of measuring charging noise.

Figure 12 is the curve map that the charging noise relevant with the filler position measured.

Figure 13 is the skeleton view of photosensitive drum ground connection web member.

Figure 14 is the skeleton view according to the photosensitive drum ground connection web member of another embodiment.

Figure 15 is the skeleton view that shows an embodiment, and in this embodiment, the used ground connection web member of photosensitive drum is a bifurcated not.

Figure 16 is the sectional view of the ground connection web member of the used not bifurcated of photosensitive drum.

Figure 17 is the elevation view that shows the charging roller assembly structure.

Figure 18 A is the skeleton view of exposure lock, and Figure 18 B is the fragmentary cross-sectional view of this exposure lock.

Figure 19 is the sectional view that shows the nonmagnetic toner adding set that has paddle wheel.

Figure 20 shows position relation and the sectional side elevation of giving developing tube pressure structure between photosensitive drum (9) and the developing tube (12d).

Figure 21 A is the sectional view along Figure 20 A-A line trend, and Figure 21 B is the sectional view along Figure 20 B-B line trend.

Figure 22 is used for the sectional view of illustration in the extruding force of developing tube.

Figure 23 is the above-mentioned skeleton view that is in the extruded paper of rolled state.

Figure 24 A is the skeleton view that shows when double sticky tape stretches out state with the extruded paper base, and Figure 24 B and 24C are the constitutional diagrams that shows when stickers sticks on outstanding double sticky tape.

Figure 25 A is the skeleton view that shows when the crooked extruded paper in bottom has been bonded at crooked joint surfaces state, and Figure 25 B shows that extruded paper top part is in the skeleton view of state when tightening by pine oil because of the fitting piece sweep.

Figure 26 is the skeleton view according to the extruded paper of another embodiment, and in this embodiment, the width of this extruded paper linearly broadens to the center gradually from its both sides.

Figure 27 is used to illustrate that extruded paper adapter surface is because of being extruded the skeleton view of meandering.

Figure 28 is the constitutional diagram that transmits recording medium by the bottom surface of lower frame.

Figure 29 is the sectional view that shows the photosensitive drum state of final assembling.

Figure 30 is the sectional view that shows the state of bonding developing sheet and cleaning foil.

Figure 31 is the exploded view that is used to illustrate the assembling handle box.

Figure 32 is the location drawing of the photosensitive drum that is used to illustrate handle box guide piece when having assembled.

Figure 33 is the section of structure that the photosensitive drum guide piece is installed in the support unit two ends.

Figure 34 is the skeleton view that is used to illustrate the joint situation of photosensitive drum and developing tube support unit.

Figure 35 is equipped with the photosensitive drum of support unit and the sectional view of developing tube.

Figure 36 is used to illustrate the skeleton view of coverlay and drawstring.

Figure 37 is the skeleton view that shows state when drawstring stretches out from a grasping piece.

Figure 38 is the view that shows hand-held this handle box of operating personnel.

Figure 39 A is the box-packed process flow diagram of joining with erection sequence of display process, and Figure 39 B is the process flow diagram of dismounting of display process box and cleaning order.

Figure 40 is the state skeleton view that shows the imaging system that handle box has been installed.

Figure 41 shows the state skeleton view of handle box imaging system among Figure 24 has been installed.

Figure 42 shows that three web members are arranged skeleton view in the imaging system.

Figure 43 is the sectional view of above-mentioned three web members structure.

Figure 44 is the sectional view that is used to illustrate to relevant position location between lower frame and the lens.

Figure 45 is the sectional view that is used to illustrate to relevant position location between lower frame and the original paper glass support part.

Figure 46 is the skeleton view that shows the pilot pin bonding station.

Figure 47 shows between the rotating shaft of photosensitive drum and developing tube and the shaft support parts to concern, and the diagrammatic elevational view of the driving force direction of transfer from the photosensitive drum driven wheel to the flange gear.

Figure 48 is that the developing tube can easily rotate in this embodiment according to the decomposition diagram of the developing tube of an embodiment.

Figure 49 is the schematic elevation view of developing tube among Figure 48.

Figure 50 shows that upper ledge and lower frame are in the profile in elevation of released state.

Figure 51 shows bright gear and the contact that is installed on the photosensitive drum.

Figure 52 is received the elevation view of part according to the developing tube of another embodiment, and Figure 52 B is that this is received the end-view of part among Figure 52 A.

Figure 53 shows the mounting means elevation drawing that developing sheet and cleaning foil is installed on imaging system inside with pin.

Figure 54 is the state elevation drawing that the photosensitive drum according to another embodiment finally assembles.

Figure 55 is the profile in elevation that is used to support photosensitive drum and developing tube support unit according to another embodiment.

Figure 56 is the synoptic diagram that transmits the gearing of driving force from the imaging system CD-ROM drive motor to each parts.

Figure 57 and 58 shows the flange gear of photosensitive drum and the skeleton view of the state of the flange gear gear that becomes integral body when lower frame stretches out therewith.

Figure 59 shows the gear train that transmits driving force from the driven wheel of imaging system to photosensitive drum and transfer roll.

Figure 60 A shows that with 60B the conveyer that different developing tubes drives has used magnetic and nonmagnetic toner in these developing tubes.

Figure 61 is the decomposition diagram that is used to illustrate the cleaning foil installation.

Figure 62 is the partial plan of the cleaning foil before installing.

Figure 63 is the partial plan of the cleaning foil after installing.

Figure 64,65 and 66 is the planimetric maps that are used to illustrate the cleaning foil assembling.

Figure 67 is the partial plan according to the cleaning foil of another embodiment, and wherein the assembling lug of cleaning foil has a circular end surface.

Figure 68 is according to the part skeleton view of the cleaning foil of an embodiment again, wherein on the cleaning foil assembling lug with its tapering part rounding.

Figure 69 is according to the partial plan of the cleaning foil of another embodiment again, wherein is stained with a band at its tapering part.

Figure 70 is the partial plan according to the cleaning foil of another embodiment, and wherein tapering part has been used oil coating.

Below most preferred embodiment is described in detail.

At first to a kind of handle box of first embodiment of the invention, and a kind of imaging system that uses this handle box, be described with reference to accompanying drawing.

One handle box and the unitary construction that the imaging system of this handle box is housed:

The unitary construction of this imaging system at first, is briefly described.Point out that in passing Fig. 1 is the orthogonal view as the duplicating machine of this imaging system example, this kind handle box has been installed in this imaging system.Fig. 2 is the skeleton view of the opened duplicating machine of sheet feed stacker.Fig. 3 is the sheet feed stacker skeleton view of closed duplicating machine.Fig. 4 is the front elevational view of this handle box.Fig. 5 is the skeleton view of this handle box.Fig. 6 is the skeleton view that is in this handle box of inversion state.

Get read apparatus 1 with optical mode by original paper when as shown in Figure 1, this imaging system A moves and get the picture information of reading on original paper or the document 2.The recording medium that is placed on sheet feed stacker 3 or inserts from sheet feed stacker 3 usefulness hands, be fed in the imaging station of this handle box B through conveying device 5, and developer in response to picture information (" toner " said promptly) is resembled by transfer device 6 at this, be sent on the recording medium 4.After this, this recording medium 4 is sent to device for fixing 7, the toner image that makes institute's transfer printing here for good and all fixation on recording medium 4.Then, this recording medium is sent on the discharge dish 8.

This handle box that defines this imaging station charges on photosensitive drum (visual support unit) 9 surfaces of rotation equably by a charging device 10, after this illuminate the optical image that reading device 1 read on the photosensitive drums and on photosensitive drum 9, form a latent image by exposure device 11, then, make this latent image become toner image by developing device 12, after toner image was transferred on the recording medium 4 by transfer device 6, the residual toner of staying on the photosensitive drum 9 was promptly removed by cleaning device 13.

Point out that in passing this handle box B forms a boxlike element by the mode that photosensitive drum 9 and so on cover is gone in the framework, this framework comprises first or upper ledge 14 and second or lower frame 15.Moreover in the embodiment that is addressed, framework 14,15 is made by the polystyrene resin (HIPS) of high impact, the about 2mm of the thickness of upper ledge 14, the about 2.5mm of the thickness of lower frame 15.Certainly, framework is not limited to aforesaid material and thickness, but can do suitably to select.

Below, will do to describe to the various parts of imaging system A and the handle box that is loaded into imaging system comprehensively.

Imaging system

The various parts of imaging system A at first are described.(original paper is got read apparatus)

Original paper is got read apparatus 1 and is used for reading the information that writes on the original paper with optical mode, and as shown in Figure 1, it comprises a kind of original paper glass support part 1a, and this supporting member is installed in the top of imaging system body 16, is placed with original paper 2 on it.The original paper gland 1b that inside surface has spongy layer 1b1 is installed on the original paper glass support part 1a, and can open and close motion.Be installed in original paper glass support part 1a and original paper gland 1b on the imaging system body 16, can reciprocatingly slide along the left and right directions among Fig. 1.On the other hand, the below of the original paper glass support part that has a lens devices 1c to be installed on to be in imaging system body 16 tops, it comprises a light source 1c1 and a short focal length focusing len array 1c2.

Under such situation, when original paper 2 is positioned on this supporting member in the mode that has the image one side to buckle to the glass support part, light source 1c1 opens, and when the glass support part slided along Fig. 1 left and right directions, the photosensitive drum 9 of this handle box B will expose via lens arra 1c2 because of the light that comes from original paper 2 reflections.(recording medium conveying apparatus)

Conveying device 5 is used for and will places the recording medium on the sheet feed stacker 3 to be delivered to imaging station and device for fixing 7.In particular, a large amount of recording medium 4 overlay sheet feed stacker 3 or individual recording medium 4 handle insert on the sheet feed stacker after, the front of this kind recording medium promptly abuts against paper feed roller 5a and is close to joint between the friction pad of this roller, behind last duplicating startup button A3, paper feed roller 5a promptly begins rotation, recording medium 4 is carried separation and is delivered to a pair of registration roller 5c1,5c2 place, and they are carried recording medium according to imaging operation.After imaging operation was finished, recording medium 4 promptly was sent to device for fixing 7 by travelling belt 5d, and by a pair of distributing roller 5f1,5f2 delivers to paper discharge tray 8 then.(transfer device)

The toner image that transfer device 6 is used for forming on the photosensitive drum 9 is transferred to recording medium 4, and in embodiment as shown in Figure 1, it comprises a transfer roll 6.More particularly, be close to the recording medium on the photosensitive drum 9 among the handle box B that is located in this imaging system by 6 drivings of the transfer roll in the imaging system, and by provide to transfer roll 6 one with photosensitive drum 9 on the opposite polarity voltage of toner image that formed, the toner image on this photosensitive drum 9 promptly is transferred on the recording medium 4.(device for fixing)

Device for fixing 7 acts on the toner image that is transferred on the recording medium by applying voltage to transfer roll 6, as shown in Figure 1, device for fixing comprises a heat-resisting fixation film 7e, this film twines and extends driving wheel 7a, between the calandria 7c and tension sheet 7d by support 7b supporting, the tension sheet is drawn partially so that fixation film 7e is applied a pulling force by extension spring 7f, there is a pressure roll 7g to be close on the calandria 7c, calandria 7c pressurizeed so that fixation film 7e can operate required predetermined pressure with fixation by intervenient fixation film 7e.

Calandria 7c is by making such as aluminium oxide one class heat proof material, and has a heating surface, and the latter comprises that long (with the vertical size in plane, Fig. 1 place) the about 216mm of a collection of wide about 160 μ m is by for example Ta ₂Wire that N makes or sheet component, and be arranged on the support 7b lower surface with these parts, this support then are to make with insulating material or the compound substance that comprises insulating material, also are coated with for example by Ta on this heating surface simultaneously ₂The protective seam of O system.Calandria 7c lower surface is smooth, and the rear and front end of this calandria is then rounded so that make fixation film 7e do level and smooth moving.Fixation film 7e is by making through heat treated polyester, and about 9 μ m are thick.This fixation film is docile and obedient hour hands by the rotation of driven roller 7a and is moved towards to rotate.In the time of between recording medium 4 that transfer printing has a toner image is by fixation film 7e and pressure roll 7g, this toner image seal because of heating and pressurization fixation on recording medium 4.

For the heat that this device for fixing 7 is produced is discharged or emitted, in imaging system main body 1b, provide a refrigeration fan 17 from this imaging system.For example, start button A when duplicating ₃When (Fig. 2) pressing, this refrigeration fan will rotate, and produces air-flow (Fig. 1), and air-flow flows into this imaging system and flows out from the recording medium exit from the recording medium supply porch.Thereby the various parts that comprise handle box all thus air-flow refrigeration heat can not stay in the imaging system again.(recording medium supply dish and discharge dish)

As shown in Figure 1 to Figure 3, sheet feed stacker 3 and discharge dish 8 are installed in the axle 3a in the imaging system main body 16 respectively, on the 8a, are able to rotate along b direction among Fig. 2, rotate around axle 3b, 8b along c direction among Fig. 2 simultaneously.Locking lug 3c, 8c are arranged at dish 3,8 free-ended both sides respectively.These locking lugs can fit among the locked groove 1b2 on the original paper gland 1b, like this, as shown in Figure 3, when dish 3,8 inwardly folds so that locking lug 3c, when 8c embedded among its corresponding locked groove 1b2, original paper glass support part 1a and original paper gland 1b can both avoid horizontally slipping.As a result, operating personnel can recommend and carry imaging system with grasping device 16a at an easy rate.(the adjusting knob joint of concentration and similarity)

Point out in passing, be provided with the adjusting knob that is used for regulating concentration one class character on the imaging system A.Now give brief description, be provided with power switch A by Fig. 2 ₁This imaging system A is in to be connected and closed condition.One concentration adjustment dial A is arranged ₂Be used to regulate the basic concentration of this imaging system (replicated image of wanting).Duplicate and start button A ₃When pressing, this imaging system begins copying operation.Duplicate and remove button A ₄When pressing, promptly interrupt copying operation and remove various adjusted states (as adjusted CONCENTRATION STATE).Copy count button A ₅Press Shi Zeke and determine to duplicate number of packages.As automatic concentration adjustment button A ₆When pressing, just can automatically set the concentration in the copying operation.Also be provided with concentration adjustment dial A ₇, operating personnel rotate this when needed and coil the just concentration of scalable copy.

Handle box

The following describes each parts among the handle box B that can be installed in the imaging system.

Handle box B comprises one year and resembles part and at least a treating apparatus.For example, this kind treating apparatus can comprise: a kind of to carrying the charging device that resembles the part surface charging; A kind of being used for resembles the developing device that forms toner image on the part carrying; And/or a kind of be used to remove remain in carry the cleaning device resemble remaining toner on the part.As Fig. 1 and shown in Figure 4, in described embodiment, handle box B is configured to a boxlike element, and it can be installed on imaging system main body 16 inside in the detachable mode of tearing open, and this handle box comprises: charging device 10; The developing device 12 that contains toner (developer), and cleaning device 13, they be placed in as carry the photosensitive drum 9 resemble part around, and form its outer covers by two frames 14,15 up and down.The toner-accumulating box 12a of charging device 10, exposure device 11 (hole 11a) and developing device 12 is installed on the upper ledge 14, the developing tube 12d of photosensitive drum 9, developing device 12 and cleaning device 13 be installed in the lower frame 15,

Now, to the various parts charging devices 10 of handle box B, exposure device 11, developing device 12 and cleaning device 13 are described in detail successively.Need to prove, the sectional view of this handle box of being separated from each other of two frames up and down among Fig. 7, Fig. 8 shows the in-built skeleton view of this lower frame, Fig. 9 shows the in-built skeleton view of this upper ledge.(photosensitive drum)

In described embodiment, photosensitive drum comprises: a cylindrical drum core made of aluminum, the about 1mm of its thickness; An organic photosensitive layer 9b, it is installed in the outside surface of this drum core, makes the external diameter of photosensitive drum reach 24mm.By transmit the driving force of CD-ROM drive motor 54 (Figure 56) in this imaging system to the flange gear 9c (Fig. 8) that is installed in photosensitive drum 9 one ends, this photosensitive drum will respond imaging operation and rotate along direction shown in the arrow.

In the imaging operation process, when photosensitive drum 9 rotations, photosensitive drum surface is by providing vibration voltage and uniform charging to charging roller 10 (contacting with photosensitive drum), and this vibration voltage is produced by superposition alternating current on direct current.In this case, for to photosensitive drum 9 surperficial uniform charging, the frequency that loads on the alternating current of charging roller 10 must increase.But if this frequency surpasses 2000HZ, photosensitive drum 9 and charging roller 10 will vibrate, and produce so-called " charging noise ".

In other words, when when charging roller 10 loads alternating current, can between photosensitive drum 9 and charging roller, produce electrostatic attraction, electrostatic attraction becomes maximum in this alternating current maximal value and minimum value, like this, charging roller 10 will be inhaled and make charging roller generation elastic deformation to photosensitive drum 9, on the other hand, when the intermediate value of alternating current, it is minimum that gravitation becomes, like this, the elastic deformation meeting of charging roller 10 is recovered, so that this charging roller 10 is separated the result with photosensitive drum 9, photosensitive drum 9 and charging roller 10 just can vibrate on the frequency under the twice of the frequency of alternating voltage, moreover when charging roller 10 was attracted to photosensitive drum 9, the rotation of photosensitive drum and charging roller will be obstructed, and causing the vibration that produces by stick slip, this also can cause charging noise.

In order to reduce the vibration of photosensitive drum 9, in embodiment shown in Figure 10 (sectional view of photosensitive drums), rigidity or elastic filler 9d have been placed in photosensitive drum 9 inside, filler 9d can be according to output, processing characteristics, the influence of weight and expense and by metal (as aluminium, copper) or other materials similar, cement, pottery (as gypsum) or elastomeric material (as natural rubber) etc. are made.Filler 9d is solid cylinder or hollow cylinder, and its external diameter is inserted in the bulging core 9a less than the about 100 μ m of the internal diameter of photosensitive drum 9.In other words, maximal clearance between drum core 9a and the filler 9d is 100 μ m, stick with glue agent (for example cyano-acrylate resin, epoxy resin or analog) 9e and be applied to the outside surface of filler 9d or the inside surface of drum core 9a, and with filler 9d insertion drum core 9a, like this, just they are bonded to each other together.

Now, with the explanation test findings that the inventor did, wherein, it is to measure by the position that changes filler 9d in the photosensitive drum 9 that filler 9d and noise are pressed the relation between (noise level).As shown in figure 11, the noise pressure places the microphone M at 30cm place, handle box front to be measured with one, and there is the background noise of 43dB in this space, handle box place.The result as shown in figure 12, when placing 80 gram fillers at the vertical middle positions of photosensitive drum 9, it is 54.5-54.8dB that noise is pressed, and when when 40 gram fillers are placed in the position of mediad flange gear 9c skew 30mm, noise is pressed minimum.From this result as can be seen, the position that filler 9d is placed on photosensitive drum 9 central authorities' deflection flange gear directions is effective, reason is seemingly: an end of photosensitive drum 9 is supported by the flange gear, the other end is then supported by flanged supporting member not, thus the structure that causes photosensitive drum relatively its longitudinal center position be asymmetric.

Like this, in described embodiment as shown in figure 10, filler is placed on the position of photosensitive drum 9 from middle position c deflection flange gear 9c, promptly is partial to the drive transmission unit of this photosensitive drum.Also have, in described embodiment, with a long L ₃Be 40mm, heavily about 20-60 gram, the filler 9d that is more preferably the hollow aluminum component formation of 35-45 gram (preferably about 40 grams) is placed on lengthwise L ₁For the photosensitive drum 9 of 257mm from middle position C to flange gear 9c offset distance L ₂Position for 9mm.By place filler 9d in photosensitive drum 9, this drum just can stably rotate, and like this, because of drum 9 vibration that rotation causes in the imaging operation is arranged with regard to suppressing.Even the frequency of the alternating current on loading on charging roller 10 also might reduce charging noise when increasing therefore.

Also have, an earthing member 18a who engages with photosensitive drum 9 inside surfaces is arranged in embodiment as described in Figure 10, the other end of this earthing member is contiguous on the photosensitive drum grounding pin 35a, and this pin keeps electrical ground this drum.Earthing member 18a be placed on photosensitive drum with that relative end of adjacent flange gear 9c one end.

Earthing member 18a is by stainless steel spring, and phosphor-copper spring etc. is made, and is installed on the support unit 26.More particularly, as shown in figure 13, earthing member comprises an essential part 18a1, has a lockhole 18a on it ₂, a projecting part on the supporting member 26 then can embed in this lockhole, and it also has two arm 18a-3 that stretch out from essential part 18a, and each arm all has a semicircle lug 18a at its free end ₄Protrude downwards.When support unit 26 is placed on the photosensitive drum 9, the lug 18a of this earthing member ₄Will borrow this earthing member arm 18a ₃Elastic force and be close to the inside surface of photosensitive drum 9.In this case, engage because earthing member 18a rouses therewith with a plurality of contacts (two contacts), the reliability of joint is increased, and, because earthing member 18a is by semicircle lug 18a ₄Engage with photosensitive drum, so engaging between this kind earthing member and the photosensitive drum is firm.

As shown in figure 14, the arm 18a of earthing member 18a ₃Length can differ from one another.Adopt this kind device, because semicircle lug 18a ₄The position that engages with photosensitive drum 9 is skew each other on the periphery direction of drum, even exist axial crack at drum 9 inside surfaces, and these two lug 18a ₄Can not touch this crack simultaneously yet, thus guaranteed (earthing member and photosensitive between) ground connection effectively.At two arm 18a ₃Length not simultaneously, an arm 18a ₃And the activating pressure between the drum can be different from the activating pressure between another arm member and the drum, and still, this difference can be by changing arm 18a ₃Angle of bend and be compensated.

In described this embodiment, although earthing member 18a has two aforesaid arm 18a ₃, but also can use three or more arms, as long as earthing member can be done effectively to engage with the inside surface of photosensitive drum 9, also can use the single arm (not bifurcated) of not being with lug, shown in Figure 15 and 16.

Now, if the activating pressure of earthing member 18a and photosensitive drum 9 inside surfaces is too little, this semicircle lug 18a ₄Just can't adapt to the rough and uneven in surface of this drum inside surface, the bad joint between this will cause earthing member and rouse, and produce because of arm 18a ₃Vibration and the noise that causes.In order to prevent this bad joint and noise, must increase activating pressure, still, if this activating pressure is too big, the inside surface of photosensitive drums will be because of semicircle lug 18a ₄High pressure and go to pot.If, as semicircle lug 18a ₄During through this impaired part, vibration will be produced, bad joint and vibrating noise will be caused like this.According to the above fact, it is comparatively to suit between about 200 grams that the activating pressure between earthing member 18a and drum 9 inside surfaces is set at about 19 grams.In other words, according to the inventor's test findings, when activating pressure restrains less than about 10, may produce bad joint, thereby cause the radiowave that disturbs other electrical equipment because of the rotation of drum 9.On the other hand, when activating pressure restrains greater than about 200, may because of between photosensitive drum surface and the earthing member 18a for a long time between sliding joint inside surface of destroying this drum and the earthing member 18a long sliding joint destroy the inside surface that this rouses, and cause undesired noise and/or bad joint.

Though because of the former of the state of photosensitive drums inside surface thereby can't eliminate the generation of above-mentioned noise etc., but, by in drum 9, laying the vibration that filler 9d can reduce drum 9, also can be by smearing conductive lubricating oil at earthing member 18a and drum 9 places of engaging more effectively to prevent to damage drum and bad joint.Say further, because this earthing member 18a is placed on the support unit 26 away from the filler 9d of deflection flange gear 9c, so this earthing member can be positioned on the aforementioned support unit at an easy rate.(charging device)

Charging device is used for to photosensitive drum 9 surface chargings.In described embodiment, this kind charging device is 63-149669 number disclosed the sort of so-called contact type charger of Jap.P. (disclosing) application.Specifically, as shown in Figure 4, charging roller 20 is installed in the inside surface of upper ledge 14 by sliding bearing 10c, and turns.This charging roller 10 comprises: a metal rotating shaft 10b (for example, using iron, SUS or the made conductive metal core of other similar materials); One NBR makes by EPDM, is surrounded on the India rubber packing ring of this rotating shaft; And urethane pad circle that wherein is distributed with that is surrounded on the India rubber packing ring; Perhaps, this charging roller 10 can comprise: the foam urethane packing ring that is distributed with carbon in metal rotating shaft and.The rotating shaft 10b of charging roller 10 relies on sliding bearing 10c and is kept by slide-and-guide pawl 10c in the upper ledge 14, so that this rotating shaft can't be separated with upper ledge and can do slight moving to drum 9.Rotating shaft 10b is setovered by spring 10, so that charging roller 10 is close on the surface of drum 9.In other words, charging device is made up of the charging roller 10 that is installed on the upper ledge 14 with bearing part 10c.In imaging operation, when charging roller 10 was driven because of the rotation of drum 9, the surface of this drum 9 was promptly because of loading the combined-voltage uniform charging of stack to above-mentioned charging roller 10.

Below, description is loaded on voltage on the charging roller 10.Though the voltage that loads on the charging roller 10 can be DC voltage, but, in order to obtain uniform charging, should be with by above-mentioned direct current and alternating voltage is superimposed and vibration voltage that form loads on this charging roller, best, vibration voltage that form loads on this charging roller 10 to increase the homogeneity of soaking by DC voltage and alternating voltage are superimposed, wherein said direct current, the maximal value in its peak value is than only use this direct current time charging beginning big twice of voltage or more (applying for 63-149669 number referring to Jap.P. (disclose)).Here the charging starting potential of the crest voltage that said " vibration voltage " is meant voltage that the magnitude of voltage cycle of intercropping at any time changes and institute's tool when only using direct current to drum 9 surface chargings be twice or bigger voltage greatly.Saying that further the waveform of vibration voltage is not limited to sine wave, can also be square wave, triangular wave or pulsating wave, and still, from reducing the angle of charging noise, the sine wave with the higher harmonics composition is not optimum.DC voltage can comprise the voltage with square wave, and the latter for example obtains by switch DC power supply periodically.

As shown in figure 17, the end 18c by the bias voltage contact spare 18c that will charge ₁On the charging bias voltage contact pin of the imaging system that will be illustrated after clinging to, just be able to apply voltage the other end 18c of the bias voltage contact spare 18c that should charge simultaneously to charging roller 10 ₂Then be close on the metal rotating shaft 10b, apply voltage to charging roller 10 thus.Point out that in passing because that charging roller 10 pulls among Figure 17 by elastic contact spare 18c is right-hand, institute is so that be provided with a hook-shaped retainer 10c for the 10c from the charging of this contact spare 18c ₁Also have, have a block piece 10e who hangs from upper ledge 14 to be arranged near the contact spare 18c, to fall at handle box B and to prevent that this charging roller 10 from having excessive axially-movable during vibration.

In described embodiment with said apparatus mode, be loaded with (sine wave) voltage of 1.6KVVpp to 600VVDc for charging roller 10.

When placing charging roller 10 in upper ledge 14, with the guide grab 10d block bearing 10c in the upper ledge 14, the rotating shaft 10b with charging roller 10 places bearing 10c then earlier.When upper ledge 14 and lower frame 15 assembled, charging roller just was close on the photosensitive drum 9, as shown in Figure 4.

Point out that in passing the bearing 10c of charging roller 10 is made by the electric conductivity bearing material that has a large amount of carbon fillers, and through metal spring 10a voltage is added on the charging roller 10, thereby stable charging bias voltage can be provided from charging bias voltage contact spare 18c.(exposure device)

Exposure device 11 utilizes and comes from sense photosensitive drum 9 face exposure that the light image of getting read apparatus 1 just is recharged roller 10 uniform charging.As Fig. 1 and shown in Figure 4, a hole 11a is arranged, on the upper ledge 14 from imaging system lens arra 1C ₂Light be radiated on the photosensitive drum 9 by this hole.When shifting out handle box B from imaging system A, if photosensitive drum 9 is exposed by the surround lighting through this aperture 11a, then drum 9 just might damage.For fear of this situation occurring, when on the 11a of hole, having settled optical gate spare 11b from this imaging system A, to shift out handle box B with box lunch, this hole 11a can be closed by optical gate spare 11b, and when handle box B was installed among the imaging system A, this optical gate spare can be opened hole 11a again.

Shown in Figure 18 A and 18B, optical gate spare 11b has L shaped xsect, has the convex surface towards the handle box outside on it, and the mode via pins 11b1 that this optical gate spare can pivot is installed on the upper ledge 14.Have and reverse disc spring 11c and be looped around among the above-mentioned pin 11b1 one, this disc spring 11c makes switch block 11b deflection to close closed pore 11a when shifting out handle box B from imaging system A.

Shown in Figure 18 A, on this optical gate spare 11b outside surface, be formed with connecting portion 11b2, when handle box B is installed among the imaging system A, and can be when closing with respect to top ON/OFF lid 19 (Fig. 1) of main body 16 foldings of imaging system, lug 19a on this lid 19 will be connected on this connecting portion 11b2, at this moment, rotate this optical gate spare 11b along direction shown in the arrow e (Figure 18 B) and just can open hole 11a.

Open and close in the operation at optical gate spare 11b, because this optical gate spare has L shaped xsect, and its coupling part 11b2 is placed in the close trunnion 11b1 place, outside of the shell of handle box B, shown in Fig. 4 and 18B, just optical gate spare 11b is contiguous on the lug 19a of the ON/OFF lid 19 outside the handle box B profile.As a result,, also can open the front end of the optical gate spare 11b in the rotation reliably, thereby can make from being installed on lens arra 1C on this optical gate spare even if the switch angle of this optical gate spare 11b is very little ₂Illumination be mapped on the photosensitive drum 9.Form good electrostatic latent image with surface at this photosensitive drum 9.By setting up above-mentioned optical gate spare 11b, when this handle box B puts into imaging system, with regard to unnecessary handle box is dropped back from the light-trapped opening lug 99a on imaging system switch/lid 19, the result just can shorten the stroke of lug, can make handle box B and imaging system miniaturization thus.(developing device)

Below developing device 12 will be described, developing device becomes toner image by exposure device with the developing electrostatic latent image that toner will be formed on the photosensitive drum 9.In imaging system A, though magnetic color tuner and nonmagnetic toner all can use, in described embodiment, the developing device among the handle box B contains the magnetic color tuner as the single component magnetic photographic developer.

The binder resin of used single component magnetic toner can be following styrene polymer and substitute thereof or their potpourri for example polystyrene and tygon toluene in developing operation; Styrol copolymer, as styrene-propene multipolymer, styrene-ethylene base toluene multipolymer, styrene-ethylene base naphthalenedicarboxylate copolymer, styrene-propene acid ethyl copolymer or styrene-propene acid butyl multipolymer, polymethacrylate, poly-butylacrylic acid ester, polyvinyl acetate (PVA), tygon, polypropylene, polyvinyl butyral, the polycyclic acid resin, rosin, modified rosin, the terebinthina resin, phenolics, aliphatic hydrocarbon resin, alicyclic hydrocarbon resin, aromatic petroleum resin, paraffin, Brazil wax, or the like.

As for the coloured material of admixture in magnetic color tuner can be the material of classes such as known carbon black, copper phthalocyanine, iron oxide black.The magnetic particle that is included in magnetic color tuner can be to be placed on magnetizable material in the magnetic field, the ferromagnetic powder of metallic iron, cobalt, nickel etc. for example, metal alloy powder or as the pulverulent mixture of magnetic iron ore or ferrite.

As shown in Figure 4, utilize magnetic color tuner to form the developing device 12 of toner image, have a toner storage case 12a who is used to place toner, it also has a toner supply device that is installed in the toner storage case 12a.Moreover developing device so design is for the developing tube 12d that has magnet 12c is rotated so that form a thin toner layer on the surface of this developing tube.When forming toner layer on developing tube 12d, by the friction of toner and developing tube 12d, but the triboelectric charging electric charge of developing just is applied on the electrostatic latent image on the photosensitive drum 9.Also have,, have a developing sheet 12e to be close on the surface of developing tube 12d in order to regulate the thickness of this toner layer.This developing tube 12d is installed in the opposite on photosensitive drum 9 surfaces, between the two about 100 to the 400 μ m in slit.

As shown in Figure 4, magnetic color tuner feeding device 12b has the reinforced parts 12b1 that is made of polypropylene (PP), acrylonitrile-butadiene-styrene (ABS) (ABC) high impact strength of styrene (HIPS) class material, and they can move back and forth along toner storage case 12a lower surface by direction shown in the arrow f.Each reinforced parts 12b1 has xsect roughly triangular in shape, and has a large amount of elongated rod shape parts, and they stretch out along the rotation direction (perpendicular with Fig. 4 plane) of photosensitive drum, are wiping the whole bottom surface of toner storage case 12a.The two ends of these rod members are bonded with each other into a complete structure.Other has three reinforced parts 12b1, and their moving range is selected to wideer than the base of above-mentioned triangular cross section, and this just makes all toners on this toner storage case bottom surface all can be arrived by erasing.In addition, also have the arm shape spare 12b2 that has lug 12b6 at free end, prevent to add floating and imbalance of materials and parts 12b1 thus.

This add materials and parts 12b1 its longitudinally an end one attaching clamp 12b4 is arranged, this lug rotatably is assembled in the slit 12b5 on the arm shape spare 12b2.This arm shape spare 12b2 is rotatably installed on the upper ledge 14 by axle 12b3, and engages with an arm (not showing bright) that places toner storage case 12a outside.Also have a drive transmission device to add materials and parts 12b1 therewith and engage, make the so far reinforced part of the driving force transmission that comes from imaging system when being installed in the imaging system, so that this arm shape spare 12b2 swings round axle 12b3 according to predetermined angle with convenient handle box B.Subsidiary pointing out, shown in Fig. 7 waited, this adds materials and parts 12b1 and this arm shape spare 12b can be by the resin monolithic molding of polypropylene, polyamide and so on so that they can between connecting portion place folding.

Therefore, in imaging operation, when arm shape spare 12b2 presses the predetermined angular swing, add materials and parts 12b1 and promptly alternately moving between the state shown in state shown in the solid line and the dotted line by the f direction along toner storage case 12a.As a result, being near the toner in this toner storage case 12a bottom surface just adds on the developing tube 12d by adding materials and parts 12b1.In this case, because each adds materials and parts 12b1 leg-of-mutton xsect is all arranged, toner adds materials and parts institute's erasing by this and adds the inclined-plane of materials and parts 12b1 and add on the developing tube along this.Like this, near the toner the developing tube 12d is difficult to be stirred, so, just can not damage at the formed toner layer of this developing tube surface 12d.

Furtherly, as shown in Figure 4, the plate cover 125 of toner storage case 12a has a sprung parts 12f1.The distance of the lower end of this sprung parts 12f1 and toner storage case bottom surface is a bit larger tham the height that each toner adds the triangular cross section of materials and parts 12b1 through being selected to.Thus, toner adds materials and parts 12b1 and can move back and forth between the bottom surface of toner storage case and this sprung parts 12f1, in this case, attempt is removed from toner storage case bottom surface if this adds materials and parts 12b, then this kind floats and will be restricted or regulate, and so just prevented to add this of materials and parts 12b1 and floated.

Subsidiary pointing out, according to described embodiment, imaging system A also can accept a handle box that has a nonmagnetic toner, and in this case, the toner feeding device promptly is driven near the nonmagnetic toner that stirs the developing tube 12d.

In other words, when using nonmagnetic toner, as shown in figure 19, there are a sense of rotation and the identical resilient roller 12g of developing tube 12d, will add developing tube 12d from toner storage case 12a by the nonmagnetic toner that toner feeding device 12b supplies with.In this case, at the joint of developing tube 12d and resilient roller 12g, the toner on the resilient roller 12g contacts and by triboelectric charging by rolling with developing tube 12d, thereby is attached on this developing tube 12d with the static form.After this, during developing tube 12d rotation, can enter the adjacent area of developing sheet 12e and developing tube 12d attached to the nonmagnetic toner on the developing tube 12d, thereby on the developing tube, form thin toner layer, this toner layer is by the sliding contact of it and developing tube, and the polarity that is enough to make the electrostatic latent image developing is arranged.Yet, when toner remains on this developing tube 12d, residual toner just mixes mutually with the toner that newly adds the developing tube to, and entering into developing tube and the adjacent place of developing sheet 12e, residual toner all can contact triboelectric charging with the rolling of developing tube 12d because of toner with new toner.In this case, though new toner has been filled with an amount of electric charge,, because residual toner can have further charging on an amount of electric charge basis, this just causes overcharging.Overcharge or the excessive toner that charges has (be attached to developing tube) adhesion stronger than the toner of an amount of charging, like this, just be difficult in the developing operation and used.

For avoiding occurring above situation, in described embodiment, handle box for having used nonmagnetic toner, as shown in figure 19, nonmagnetic toner feeding device 12h comprises that is installed in a rotary part 12h1 in the toner storage case 12a, and this rotary part 12h1 has an elasticity stirring vane 12h2.When this nonmagnetic toner handle box was installed among the imaging system A, aforesaid drive transmission device just engaged with this rotary part 12h1, and the latter can rotate for imaging system drives in the imaging operation.According to this mode, when forming image with the handle box that is installed in the imaging system, uses non-tape toner, toner among the toner storage case 12a just can be subjected to the stirring energetically of stirring vane 12h2, the result, near the developing tube 12d toner also can be stirred and be mixed with toner among the toner storage case 12a, thereby make the electric charge that shifts out from developing tube 12d be distributed on the toner the toner storage case, to avoid the damage of toner.

Point out in passing, the developing tube 12d that has toner layer above is provided in a side of the opposite of photosensitive drum 9, one very little gap (about 300 μ m when this gap uses magnetic color tuner at handle box are arranged between the two, about 200 μ m when using nonmagnetic toner), for this reason, in described embodiment, near the two ends of the axle of developing tube 12d with the zone that has beyond the toner layer, some abutment rings have been installed, and that the external diameter of each abutment ring exceeds the external diameter numerical value and the gap length of developing tube is suitable, so that these abutment rings are connected the place outside the formation latent image on the photosensitive drum 9.

Now, illustrate that photosensitive drum 9 and the position of developing tube 12d concern.Figure 20 shows position relation between photosensitive drum 9 and the developing tube and the sectional side elevation that is used for to the structure of developing tube pressurization, and Figure 21 A is the sectional view that moves towards along Figure 20 A-A, and Figure 21 B is the sectional view that moves towards along Figure 20 B-B.As shown in Figure 2, the developing tube 12d that has toner layer is installed in photosensitive drum 9 opposites, and small slit (about 200 to 300 μ m) is arranged between the two.In this case, photosensitive drum 9 by via support unit 33 rotatably mounted, the rotating shaft 9f of the flange gear 9C that is positioned at photosensitive drum one end and rotatably being installed on the lower frame 15.The other end of photosensitive drum 9 also rotatably is installed on the lower frame 15 via the supporting part 26a that is fixed in lower frame upper support parts 26.The developing tube has above said abutment ring 12d1, the external diameter of each abutment ring is by the external diameter of above-mentioned closely spaced value greater than the developing tube, and be installed near the two ends of developing tube axle and the zone that has beyond the toner layer, so that these abutment rings are connected the place outside the formation latent image on the photosensitive drum 9.

Have again, developing tube 12d is rotatably supporting with the developing tube supporting member 12i that has zone outside the toner layer near being positioned at developing tube axle two ends, wherein developing tube supporting member is installed on the lower frame 15, and can do slight moving along direction shown in Figure 20 arrow g.All there is the lug that stretches out at the rear portion of each developing tube supporting member 12i, and is overlapping the thrust spring that an end is connected with lower frame 15 on it.As a result, the developing tube can always be partial to photosensitive drum 9 because of these thrust springs.In this case, abutment ring 12da always is connected on the photosensitive drum 9, like this, will keep predetermined gap between developing tube 12d and photosensitive drum, therefore, to the flange gear 9c transmission of drive force of photosensitive drum 9 and the developing tube gear 12k of developing tube 12d is meshed with this flange gear 9c.

Developing tube gear 12k has also constituted the flange portion of developing tube 12d.In other words, according to described embodiment, flange gear 12k and this flange portion are integrally formed with resin material (as the polyacetylene resin).Also have one one end to be supported on the center that minor diameter metallic pin 12d2 (for example making with stainless steel) on the lower frame 15 is force-fitted in developing tube gear in rotatable mode.This metallic pin 12d2 plays a part rotating shaft at the end of developing tube 12d.According to described embodiment, because developing tube gear and this flange portion can be facilitated the production of developing tube and can be made developing tube and handle box B lightweight like this by the resin monolithic molding.

The glide direction of this developing tube supporting member 12i is described with reference to Figure 22 now.The driving situation of developing tube 12d is at first described.When driving force reaches flange gear 9c from the drive source (CD-ROM drive motor 54) of imaging system A, and when this flange gear 9c reaches developing tube gear 12k, engagement force between two gears tilts with certain pressure angle (being 20 ℃ in described embodiment) or departs from a tangent line direction, and this tangent line then contacts with the two operating pitch circle of flange gear 9c and developing tube gear 12k.Like this, engagement force just points to the direction shown in the arrow g among Figure 22 (20 ℃ of Θ ≈).In this case, if socket support 12i slides along being parallel to the two the direction of rotation center line of photosensitive drum 9 and developing tube 12d, then be broken down into a horizontal component Ps parallel and one and during the rectangular vertical stress component Ph of rotating direction when this engagement force with rotating direction, as shown in figure 22, the horizontal component that is parallel to rotating direction can point to the reverse direction of photosensitive drum 9, the result, with regard to driving developing tube 12d, the distance between photosensitive drum 9 and the developing tube 12d can change because of the engagement force between flange gear 9c and the developing tube gear 12k.Like this, the toner on the developing tube 12d just can't move on the photosensitive drum 9 in right amount.Thereby destroyed visualization capabilities.

For avoiding this situation, in described embodiment, shown in Figure 21 A, according to driving force by the transmission situation of flange gear 9c to developing tube gear 12k, the glide direction on drive surface (developing tube gear 12k is installed on this face) of developing tube gear 12k is consistent with arrow Q direction, in other words, the angle φ between (between flange gear 9c and the developing tube gear 12k) engagement force P and the glide direction is approximately 90 ° (being 92 ° in described embodiment).In this case, the horizontal component Ps parallel with glide direction can ignore, and, in described embodiment, this component Ps makes developing tube 12d be partial to photosensitive drum 9 a little, and in this case, developing tube 12d is subjected to pushing with the corresponding pressure of spring pressure α of pressure spring 12j, keep the distance between photosensitive drum 9 and the developing tube 12d constant, thereby guaranteed normal developing.

Below, will illustrate aspect the slip of sliding bearing 12i on non-drive surface (developing tube gear 12k is not set on this face).On this shape drive surface, different with above-mentioned drive surface, because sliding bearing 12i do not accept driving force, shown in Figure 21 b, therefore, just the glide direction of this roller bearing 12i parallels with the two the line of centres of photosensitive drum 9 and developing tube 12d basically.

In this case, when developing tube 12d is pressed towards photosensitive drum 9, be used for the developing tube is advanced to the propelling angle of drive surface from non-drive surface by change, the position relation between developing tube 12d and the photosensitive drum 9 is always kept suitably, so just guaranteed that developing is suitable.

Point out along band, the glide direction of the sliding bearing 12i on the drive surface, as on non-drive surface the time, may be adjusted to is to parallel with the two the line of centres of photosensitive drum 9 and developing tube 12d basically.In other words, as described in the above-described embodiments, on this drive surface, because developing tube 12d pushes away photosensitive drum 9 by (engagement force between flange gear 9c and the developing tube gear 12k) the component Ps that points to this sliding bearing 12i glide direction, in this embodiment, just can be adjusted to amount that thrust went out greatly on more non-drive surface and the sizableness of component Ps in the thrust that promotes spring 12j on the drive surface.Just, when thrust spring 12j was P to the thrust of developing tube 12d on non-drive surface, then the thrust P2 of the thrust spring on drive surface had relational expression P ₂=P ₁+ Ps, in this case, developing tube 12d is always bearing suitable thrust, and this has just guaranteed between developing tube and the photosensitive drum constant distance is arranged.(cleaning device)

Cleaning device 13 is used for after the toner image on the photosensitive drum 9 is sent on the recording medium 4 by transfer device 6, eliminates the residual toner of staying on the photosensitive drum 9.As shown in Figure 4, this cleaning device 13 comprises: a flexible cleaning sheet 13a, and this cleaning foil contacts with the photosensitive drum surface, is used to remove or clear away the residual toner of staying on the photosensitive drum 9; A kind of extruded paper 12b, it touch in the surface of photosensitive drum 9 and be placed in cleaning foil 13a below the toner that is eliminated with reception; And used toner storage case 12c, it is used to hold by the received used toner of this extruding plate 13, subsidiary pointing out, this extruding plate 13b just touches the surface of closing photosensitive drum 9, and the residual toner that allows to stay on the photosensitive drum 9 passes through, but its guides to toner of being removed from photosensitive drum by cleaning foil 13a on the direction on disengaging photosensitive drum 9 surfaces.

The method of extruded paper 13b is installed in explanation now.Extruded paper 13b is bonded on the composition surface 13d of used toner storage case 13c with double sticky tape 13e.In this case, used toner storage case 13c is made by resin material (as the material of high impact strength of styrene (HIPS) class), and has the surface of convex-concave slightly.Like this, as shown in figure 23, if double sticky tape only is bonded in this composition surface 13d, and this extruded paper 13b also only is bonded on the adhesive tape 13e, and so, the free margins of (contacted with photosensitive drum 9) extruded paper 13b can take place by curling shown in X.In case extruded paper 13b produces this curling, it just can closely not contact with the surface of photosensitive drum 9, and can not receive the toner that cleaning foil 13a is removed reliably.

Generation for fear of this situation, consider: when this extruded paper 13b is placed on the 13d of composition surface, shown in Figure 24 A, make the composition surface 13d that is positioned at used toner storage case bottom with a traction element 20 tractions,, then this extruded paper 13b is bonded on this crooked composition surface so that this composition surface produces elastic bending deflection, then, the sweep on this composition surface of pine oil provides gravitation with the free margins of giving this extruded paper 13b, and it is curling to prevent that thus this free margins from producing.But, in present small-sized handle box B, because the area of this composition surface 13d is less, if extruded paper 13b is bonded on the crooked composition surface 13d, shown in Figure 24 A, then the base of this extruded paper 3b or inferior horn 13b1 can go up downwards from this composition surface 13d and protrude, and, when this extruded paper 13b from then on composition surface 13d go up when protruding downwards, shown in the sectional view of Fig. 1, so, the recording medium 4 extruded paper 13b that just may protrude therewith is inconsistent.

Moreover, if this extruded paper 13b is placed on the crooked composition surface 13d, shown in Figure 24 A, then double sticky tape 13e will protrude from the base of this composition surface 13d, in this case, when this extruded paper 13b when sticker part 21 presses against double sticky tape 13e and goes up, shown in Figure 24 B, then the projection of this double sticky tape 13e will be bonded on the sticker part 21, in this case, when removing sticker part 21, shown in Figure 24 C, double sticky tape will come off from composition surface 13d, and this will cause the bad connection of this extruded paper.

For fear of this situation, in described embodiment, shown in Figure 25 A, it is in full accord to make the shape on this extruded paper 13b base and this be pulled the curved shape of the composition surface 13D that parts 20 curve.Simultaneously, vertical to hold middle body be different to the width of this extruded paper 13b from two, and the latter is than the former wide (for example, right centre is wide approximately 7.9mm partly, the wide about 7.4mm in two ends).In this case, when rubber clear board 13b was placed on the coupling arrangement aerofoil, crooked double sticky tape 13 can not protrude from rubber clear board 13b.Moreover, when the bending of moving tracting part 20 with lax composition surface 13d, and when the top of extruded paper 13b provides pulling force, the base of this extruded paper promptly can not protruded downwards from composition surface 13d, so the conflict of aforementioned recording medium 4 and extruded paper 13b and this extruded paper bad is connected etc. is all prevented.

Point out in passing, but angle in serviceable life from workability and service part, it is straight preferably making the base of this kind extruded paper 13b, like this, as shown in figure 26, can make the width of this extruded paper 13b different fully, even the width of its middle body comes greater than two vertical width of holding corresponding to composition surface 13d amount of bow.In the above-described embodiments, though this composition surface 13d causes curved by traction element 20 tractions, but should be realized that, as shown in figure 27, also may advance the demarcation strip 13c1 of toner storage case to make the 13d bending of this composition surface, and this plate of cutting apart be integrally formed with composition surface 13d by propulsive element 20.

Moreover, in described example, when the composition surface of extruded paper 13d is formed on the bottom of used toner storage case 13c, extruded paper 13b is bonded on the composition surface of a sheet metal of independent used toner storage case 13c, then, this sheet metal is positioned among the used toner storage case 13c.

Point out that in passing in described embodiment, extruded paper 13b is made by polyethylene terephthalate, thick about 38 μ m are about 241.3mm, the about 7.9mm of central width, and the about 7.4mm of two ends width, and radius-of-curvature is advisable with about 14556.7mm.(upper ledge and lower frame)

The upper ledge and the lower frame 14,15 that constitute handle box B outer cover below will be described.As Fig. 7 and shown in Figure 8, the developing sheet 12e of photosensitive drum 9, developing tube 12d and developing device 12 and cleaning device 13 all are placed in the lower frame 15, on the other hand, as Fig. 7 and shown in Figure 9, charging roller 10, the toner storage case 12a of developing device 12 and toner feeding device 12b then are placed in the upper ledge 14.

For upper and lower frame 14,15 is installed together, there are four pairs to be formed at locking pawl 14a on the upper ledge 14 with integral form, they vertically equidistantly are spaced each other along upper ledge, similarly, locking hole 15a and the locking lug 15b that is used for engaging with locking pawl 14a then is integrally formed on the lower frame 15.Thus, when upper and lower frame 14,15 forcibly is pushed against each other together so that locking pawl 14a when engaging with corresponding locking hole 15a and locking lug 15b, upper and lower frames 14,15 has just interconnected.Subsidiary pointing out, in order to ensure being bonded with each other of upper and lower frames, as shown in Figure 8, locking pawl 15c and locking hole 15a are formed at respectively near two vertical ends of lower frame 15, otherwise, as shown in Figure 9, a locking hole 14b (15c engages by the locking pawl) and a locking pawl 14c (15d engages by the locking hole) then are formed at respectively near 14 liang of vertical ends of upper ledge.

In the time will constituting handle box B and various piece and put into above-mentioned upper and lower frame 14,15 respectively, by should be ready, just can guarantee that each parts has good bearing accuracy and makes handle box B be easy to assembling with respect to each parts (as developing tube 12d, developing sheet 12e, cleaning foil 13a) installation that photosensitive drum 9 is positioned in the same frame (being lower frame 15) in described embodiment those.Again as shown in Figure 8, there are some assembling groove 15n to be formed near the side of lower frame 15.On the other hand, as shown in Figure 9, there are some assembling lug 14h (intending cooperating among the corresponding assembling groove 15n) to be formed at the centre position between near the adjacent locking pawl 14a in upper ledge 14 1 sides.

Also have, in described embodiment, as shown in Figure 8, assembling lug 15e is formed near two corners of lower frame 15, and opposite assembling groove 15f then is formed near two other corner of lower frame.On the other hand, as shown in Figure 9, assembling groove 14d (for engaging with corresponding assembling lug 15e) is formed near 14 two corners of upper ledge, assembles lug 14e (for being coupled among the corresponding assembling groove 15f) on the contrary and then is formed near other two corners of lower frame.Correspondingly, when by (upper and lower frames 14,15) assembling lug 14h, 14e, 15e are assembled to corresponding assembling groove 15h, 15f, among the 14d and when upper and lower frames 14,15 is bonded with each other, this upper and lower frames 14,15 will engage each other securely, like this, even apply torsion to the upper and lower frames 14,15 that is bonded with each other, they can not fall apart yet.

Subsidiary pointing out, can not fall apart because of loading torsion as long as engaged upper and lower frames 14,15 in the position of above-mentioned assembling lug and assembling groove, can change.

Also have an over cap 22 to be rotatably installed on the upper ledge 14 as shown in Figure 9 by trunnion 22a; this over cap 22 is by reversing disc spring (not showing bright) and show to deflection along arrow h among Fig. 9 on pivot 22a; like this; photosensitive drum 9 be closed or be covered to over cap 22 can when handle box B unloads from imaging system A, as shown in Figure 4.

More particularly, as shown in Figure 1, be in order to make it can be by being formed at the hole 15g exposure on the lower frame 14 relative, so that the toner image on the photosensitive drum is transferred on the recording medium 4 with transfer roll 6 so design photosensitive drum 9 like this.But when imaging system A unloads handle box B, if photosensitive drum 9 is exposed in the atmosphere, it will be damaged by surround lighting, and dust one pollutant also can be attached on the photosensitive drum 9.For fear of this situation, when with handle box B when imaging system A takes off, available over cap 22 covers hole 15g, thereby makes light and the dirt of photosensitive drum 9 around having avoided.Point out that in passing when handle box B was installed among the imaging system A, over cap 22 rotated by a pendulous device (not showing bright), get so that photosensitive drum 9 exposes by hole 15g.

Again as shown in Figure 1, in described embodiment, the lower surface of lower frame 15 also plays the guide effect that is used for transmission log medium 4.The lower surface of lower frame constitutes both sides guide part 15h1 and stepped central guide part 15h2 (Fig. 6) two parts.The about 102-120mm of longitudinal length (being the distance between ladder) of the guide part 15h2 of central authorities (being 107mm in described embodiment), this length is slightly larger than its width (about 100mm), and the about 0.8-2mm of its ladder degree of depth.In this case, central guide part 15h2 can increase the transmission space of recording medium 4.As a result, even when thicker and resilient paper such as postcard, business card, envelope etc. are used as recording medium 4, these thicker paper can be not inconsistent with the aforementioned guide surface of lower frame 15 yet, thereby avoided the damage of recording medium.On the other hand,, transmit, also can make it not have floating ground and transmit because this paper (recording medium) is a targeting part by both sides when when using as recording medium than the wide thin paper of postcard width such as plain paper.

Now, will the transmission guide effect of the lower surface of lower frame 15 to recording medium be described more specifically.As shown in figure 28, both sides targeting part 15h1 can be just and a slit N between photosensitive drum 9 and the transfer roller 6, with respect to the direction of a tangent line Z, by certain amount (=5-7mm) flexing.Because both sides guide part 15h1 is formed on the lower surface of lower frame 15 providing between lower frame and the developing tube 12d necessary space and for fully toner being offered the necessary space of developing tube, thus the position of this guide part by the position decision of developing tube to obtain best developing state.If the lower surface of both sides guide part is near this tangent line X, then the thickness of lower frame 15 bottoms just reduces, and this will cause the problem relevant with the intensity of handle box B.

Moreover, the position of the base 13f of cleaning device 13 is by cleaning foil 13a, extruded paper 13b and will give below other description formation cleaning device 13 position component determined, why to so come to select the position on base, be for provide an inconsistent distance L b of the recording medium that can prevent and be added 4 (=3-5mm).Subsidiary pointing out, in described embodiment, the perpendicular line of the rotation center that passes through photosensitive drum 9 as shown in figure 28, the angle beta that connecting line constituted of it and photosensitive drum rotation center and transfer roll 6 rotation centers is the 5-20 degree.

Based on the above-mentioned fact, be that (=1-2mm) groove or ladder just can add thicker resilient recording medium 4 and do not reduce the intensity of lower frame 15 so that this guide part and tangent line X approach LC smoothly by the degree of depth only is provided on central guiding parts 15h2.Subsidiary pointing out, in most of the cases, because thicker and elastic recording medium is business card, envelope etc., they are narrower than the postcard that uses under common imaging system specification, so, just do not have problem in actual use as long as the width of the central guide part 15h2 of stepped or concavity is selected to the width that is a bit larger tham postcard.

Other has the adjusting lug 15i of downward protrusion to be formed at lower frame 15 on the outside surface in zone outside the recording medium guide part, and this is regulated, and each all gives prominence to about 1mm from the recording medium spigot surface of lower frame among the lug 15i.In this case, though handle box in imaging operation because of certain reason has descended some a little owing to regulate the bottom guiding parts 23 (Fig. 1) that lug 15i is connecting imaging system main body 16, therefore can prevent the further decline of handle box.Correspondingly, the space between the bottom spigot surface of bottom guiding parts 23 and lower frame 15 will keep 1mm at least, so that transmit the path of recording medium for recording medium 4 provides interference-free.Moreover, there is a groove 15j to be formed on the lower surface with the inconsistent lower frame of registration roller 5c2 as shown in Figure 1, like this, when being installed in handle box B among the imaging system A, because it is installed near the registration roller 5c2, the volume of whole imaging system can dwindle.(assembling of handle box)

Below, explanation is had the assembling of the handle box of said structure.In Figure 29, having regular shape, make by Moltopren (production of Polyurethane INOAC company) rubber, be bonded on the end and lower frame 15 of developing device 12 and cleaning device 13 in order to prevent toner leakage preventing seal S that toner leaks.Subsidiary pointing out, these toner leakage preventing seals S may not all have the shape of rule.In addition, also can adorn attached toner leakage preventing seal S like this,, and just become elastomeric fluent material when solidifying in wherein being poured into promptly by forming groove in the part that will lay the sealing part.

The sheet supporting member 12e1 that lays developing tube 12e passes through pin 24a with the sheet supporting member 13a1 that lays cleaning foil 13a, 24b is installed in respectively on the lower frame 15, according to described embodiment, as shown in phantom in Figure 29, sheet supporting member 12e1, the faying face of 13a1 is almost parallel each other, so that pin can drive in by equidirectional.Like this, when producing a large amount of handle box B, developing sheet 12e and cleaning foil 13a just can utilize aut.eq. to pass through pin and install constantly.Have, the assemble ability of sheet spare 12e, 13a also can simultaneously, be taken out the direction of above-mentioned mask and simplify the profile of this mould, thereby can reduce cost by providing the space to improve for screwdriver from mould by adjustment again.

Subsidiary pointing out, developing sheet 12e and cleaning foil 13a can install without the pin screw, and can be attached on the lower frame 15 with glue 24c, 24d dress, as shown in figure 30.In this case, when when same direction provides glue, developing sheet 12e cleaning foil 13a can utilize aut.eq. to install automatically and constantly.

After sheet spare 12e, 13a such as above-mentioned installing, the developing tube is installed on lower frame 15, and then photosensitive drum 9 is installed on lower frame 15, for this purpose, in described embodiment, guide 25a, 25b are installed in respectively on sheet spare supporting member 12e1,13a1 (relative with the photosensitive drum) surface, its position is outside vertical imaging region C (Figure 32) of photosensitive drum 9, (subsidiary pointing out, in described embodiment, guide 25a, 25b all are formed on the lower frame 15), the distance between guide 25a and the 25b is greater than the outer diameter D of photosensitive drum 9.Like this, at each parts such as developing sheet 12e, after cleaning foil 13a or the like installed, as shown in figure 31, photosensitive drum 9 finally was installed on the lower frame, simultaneously, and by two vertical ends (outside imaging region) of guide 25a, 25b guiding photosensitive drum.In other words, when photosensitive drum 9 is installed to lower frame 15, to make cleaning foil 13a slight curvature and/or make developing tube 12d after merger rotation.

If earlier photosensitive drum 9 is installed to lower frame 15, and then sheet spare 12e, 13a one base part are installed to lower frame, just might damage the surface of photosensitive drum 9 in the process of installation sheet spare 12e, 13a one base part.Moreover, in this assembly work process, be to be difficult to check the binding site of developing sheet 12e and cleaning foil 13a and to measure the pressure that contacts between these sheet spares and the photosensitive drum, in addition, though will be at sheet spare 12e, the last interpolation of 13a lubricant increases/or sheet spare problem such as curl to prevent moment of torsion, these problems are because during original state, sheet spare 12e, 13a (situation of no toner) with sheet spare 12e, 13a is installed between photosensitive drum 9 before the lower frame 15 and the developing tube 12d closely, and contact causes, but lubricant may drip from sheet spare when assembling slice spare.Yet, according to described embodiment, because photosensitive drum 9 is to be installed to lower frame at last, so can eliminate above-mentioned defective and problem.

As mentioned above,, just developing device 12 and cleaning device can be installed in the process of framework, check the binding site of these devices 12,13 and prevent that in being installed in the photosensitive drum process photosensitive drum imaging region from damaging or scratch according to described embodiment.Also have, because these devices 12,13 are being installed in the lower frame process can adding lubricant on sheet spares, and can prevent the lubricant drippage, thereby prevent to cause the phenomenon that moment of torsion increases and/or sheet spare curls with developing tube 12d and cleaning foil 13a with tight contact the between the photosensitive drum 9 because of developing sheet 12e.

Subsidiary pointing out, in described embodiment, guide 25a, 25b are integrally formed on the lower frame 15, and lug 12e2,13a2 then are integrally formed in sheet spare supporting member 12e1, on the 13a1, as shown in figure 33, and other guides can be installed on the sheet spare support unit in the place beyond photosensitive drum 9 imaging regions, like this, in assembling photosensitive drum 9 processes, can be by these lugs or other guides guiding photosensitive drum.

As mentioned above, as developing tube 12d, developing sheet 12e, cleaning foil 13a and photosensitive drum 9 are after installing on the lower frame 15, shown in Figure 34 (skeleton view) and Figure 35 (sectional view), supporting member 26 can rotatably support the end of photosensitive drum 9 and developing tube 12d.This supporting member 26 is by making such as high-abrasive materials such as polyacetals and comprising: a photosensitive drum supporting member 26a, and it is assemblied on the photosensitive drum 9; A developing tube support 26b, it is assemblied on the outside surface of developing tube 12d; And the D shape hole 26c of portion, it is assemblied in D shape magnet 12C one end.Correspondingly, developing tube support 26b can be installed on the outside surface of developing tube supporting member 12i, and this supporting member is used to support the outside surface of developing tube 12d, perhaps is installed between the slipping plane 15Q of lower frame 15, and this slipping plane then is engaged in the outside surface of sliding part 12i.

Thus, be installed in an end of photosensitive drum as photosensitive drum support 26a, the end of magnet 12c inserts the D shape hole 26c of portion, developing tube 12d and inserts developing tube support 26b, and support unit 26 is mounted to lower frame 15 and when photosensitive drum had vertical rotation, photosensitive drum 9 just rotatably was supported with the developing tube.Point out that in passing as shown in figure 34, earthing member 18a is installed on the support unit 26, when support unit 26 was installed on the limit of lower frame, earthing member 18a engaged (see figure 10) with the aluminum drum core of photosensitive drum 9.Moreover developing bias voltage contact 18b also is installed on the support unit 26, and when support unit 26 was installed on the developing tube 12d, this bias voltage contact spare will engage with the conductive component 18d of the inside surface that is connected developing tube 12d.

In this case, because photosensitive drum 9 and developing tube 12d are rotatably being supported by single support unit 26, therefore, it is possible improving the accuracy of these parts 9,12d location and the quantity of minimizing parts, has made things convenient for assembly manipulation thus and expense is reduced.Moreover, owing to can utilize single parts to photosensitive drum 9, developing tube 12d and magnet 12c location, so, the position relation of determining photosensitive drum 9 and magnet 12c accurately is possible, and the result just can keep photosensitive drum 9 lip-deep magnetic force constant, like this, will obtain high-quality image.In addition, owing to be used for the earthing member 18a of photosensitive drum 9 ground connection and be used for providing the developing bias voltage contact spare 18b of developing bias voltage all to be installed in support unit 26 to the developing tube, so can obtain the intensive of each parts effectively, this just makes handle box B that smaller volume is arranged.

Moreover, when handle box B is installed in the imaging system, provide supporting part with to the handle box B in imaging system location, and handle box is accurately located by (on support unit 26).Further, as shown in Figure 5 and Figure 6, it is that photosensitive drum shaft 26d also is formed on the support unit 26 that an outwards outstanding lug is arranged.When being assembled to handle box B in the imaging system main body 16, this photosensitive drum shaft 26d is supported by the following shaft support parts 34 that will give description, thereby handle box B is positioned.In this case, because when cartridge is assigned to imaging system main body 16, handle box is located by the support unit of direct supporting photosensitive drum 9, so photosensitive drum 9 can accurate localization and no matter whether miscellaneous part has produce and/or loading error.

Again as shown in figure 35, the other end of magnet 12c is placed in the inner chamber that is formed on the developing tube gear 12k, the external diameter of magnet 12c is slightly less than the internal diameter of this inner chamber, like this, on this developing tube gear 12k, magnet 12c is being supported with gap arbitrarily in this inner chamber, and because of its freely weight in inner chamber, be in lower position or be partial to sheet spare support unit 12e1 because of the magnetic force of magnet 12c, the latter uses magnetic metal such as ZINKOTE (galvanized steel plain sheet is produced by Nippon Steel Corporation).In this case, because developing tube gear 12k and magnet 12c can be connected to each other with gap arbitrarily, the friction torque between magnet 12c and the developing tube swing pinion 12k just can reduce, thereby has also just reduced the moment of torsion of relevant handle box.

On the other hand, as shown in figure 31, charging roller 10 rotatably is installed in the upper ledge 14, and optical gate spare 11b, over cap 22 and toner adding set 12b also are installed in the upper ledge 14.Be used for being with the coverlay 28 (Figure 36) of drawstring 27 to be covered to the hole 12a1 of developing tube 12d interpolation toner by one from toner storage box 12a.In addition, cap 12f then is placed on the upper ledge, after this, by charging aperture 12a3 toner is supplied to toner storage case 12a, and this charging aperture 12a3 is covered then, has so just sealed the toner storage case.

Subsidiary pointing out, as shown in figure 36, the drawstring 27 of coverlay 28 adheres to its another vertical end (left end of Figure 36) always and curls at the other end from one of this hole vertical end (right-hand member of Figure 36) round hole 12a1, also further along being formed on the upper ledge 14 that grasping part 14f stretches and outwards outstanding therefrom.

After this, assemble handle box B by being bonded with each other of upper and lower frame 14,15, the joint of this upper and lower frame utilizes above-mentioned locking pawl and locking hole or groove and carries out.In this case, as shown in figure 37, drawstring 27 exposes between the grasping part 15k of the holding part 14f of upper ledge 14 and lower frame 15, so when using new handle box B, operating personnel hold the outshot that is exposed at the drawstring 27 between grasping part 14f, the 15k, so that drawstring 27 comes off from coverlay 28, thereby open this hole 12a1, with regard to the toner among the toner storage case 12a is shifted among the developing tube 12d, afterwards handle box is installed among the imaging system A like this.

As mentioned above.By drawstring 27 is exposed between holding part 14f, the 15k for two frames 14,14 up and down, this drawstring can expose from handle box in fit on lower frame 14,15 processes at an easy rate.When being mounted to handle box B in the imaging system, use grasping part 14f, 15k, like this, if operating personnel have forgotten to remove drawstring 27 before handle box is placed in imaging system, because he must catch the grasping part in assembling handle box process, he will feel the existence of the drawstring 27 that the end is removed.Moreover, when having obvious difference, the color of the color of drawstring 27 and upper and lower frames 14,15 (for example,, then uses white or yellow drawstring 27) if frame is deceived, will improve its highlighting, and will reduce like this and forget the mistake of removing drawstring.

Moreover, for example, when a U-shaped guiding rib that is used for the temporary support drawstring is provided on the 14f of the grasping part of upper ledge 14, in the process that upper and lower frames 14,15 is bonded with each other, can determines and easily make drawstring 27 expose to preposition.Subsidiary pointing out, when assembling handle box B by joint upper and lower frames 14,15, owing to be used to admit the groove 15j of registration roller 5c2 to be formed at the outside surface of lower frame 15, as shown in figure 38, operating personnel just can be by inserting its finger this groove 15j this handle box B that holds.Moreover, in described embodiment, as shown in Figure 6, on this handle box B, be formed with grip rib 14i, so that operating personnel can be by hooking these grip rib and easily catch handle box with finger.Subsidiary pointing out, owing to be used for admitting the groove of (preventing to contact with it) registration roller 5c2 to be formed on the lower frame 15 of handle box B, so can make the volume miniaturization more of imaging system.

Also have, as shown in Figure 6, owing near groove 15j is formed at it along the locking pawl 14a that upper and lower frames 14,15 is bonded with each other and locking hole 15b, thereby when operating personnel catch handle box B by hooking groove 15j with finger, operating personnel's grasping force is towards the locking direction, like this, just guaranteed the mutual locking between locking pawl 14a and the locking hole 15b.

Assembling and the installation procedure of handle box B are described with reference to Figure 39 A now.As shown in the figure, in lower frame 15, assemble various parts, secondly check various parts have been installed lower frame (for example, check the position relation between photosensitive drum 9 and the developing tube 12d), once more lower frame 15 is engaged with the upper ledge 14 that has assembled parts such as charging roller 10 etc., form handle box B therefrom, after this, handle box is totally checked again, just this handle box can be installed then, assembling comes to this simply with the flow process of installing.(installation of handle box)

Below, with the method for explanation installing process cartridge B in imaging system A.

As shown in figure 40, provide one to have the loading part 29 that window 29a is installed on the upper switches lid 19 of imaging system A, the profile of this installation window 29a and handle box B is complementary.By catching grasping part 14f, 15k handle box B to be inserted imaging system via this installation window 29a.In this case, the guide ridges 31 that is formed on the handle box B is guided by the gathering sill (unnumbered) that is formed on the switch cover 19, and simultaneously, the bottom of handle box is guided by the guide plate that has little hook at free end.

Attach and point out that as shown in figure 40, anti-error dress lug 30 is formed on the handle box B, window 29 is installed is had a groove 29b who is used to admit this lug 30.As Figure 40 and shown in Figure 41, according to specific handle box, this handle box uses the toner of the developing sensitivity that is applicable to specific imaging system, the shape of above-mentioned lug 30 different with the position (be on each handle box all different), so, when the handle box of the toner that will use different developing sensitivity is installed in a certain specific imaging system, because lug 30 does not match with the installation window 29a of this imaging system, handle box can't be installed in the sort of imaging system, thus, the mistake that can prevent handle box B is installed, and like this, will prevent to form fuzzy image because of toner developing sensitivity difference.Subsidiary pointing out also can prevent the wrong handle box that comprises dissimilar photosensitive drums and different developing sensitivity of installing.Have again, because groove 29b and lug 30 are positioned at a side of installing process cartridge, if attempt installing process cartridge in imaging system mistakenly, operating personnel just can see at an easy rate that this lug 30 is the fact of 29 lockings of loading part, like this, operating personnel resemble the possibility that by force handle box is advanced imaging system under normal conditions and damage handle box B and/or imaging system A and are just avoided.

After in the installation window 29 on ON/OFF lid 19 that handle box B is packed into, when ON/OFF lid 19 is closed, supported by shaft support parts 33 (Figure 40) by bearing 46a from the rotating shaft of the side-prominent photosensitive drum 9 of upper and lower frames 14,15 1, passed through a sliding bearing 46b and a bearing 46c (Figure 35) is supported by shaft support parts 33 from the rotating shaft 12d2 of the side-prominent developing tube 12d of upper and lower frames 14,15 1 simultaneously.On the other hand, the photosensitive drum rotating shaft part 26 (Figure 35) that is installed in the support unit 26 of photosensitive drum 9 other ends is then supported by the shaft support parts 34 shown in Figure 42.

In this case, over cap 22 rotates so that photosensitive drum 9 exposes, the result, and photosensitive drum 9 just contacts with the transfer roll 6 of imaging system A.Moreover, in handle box B, provide with photosensitive drum 9 contacted earthing member 18a, with developing tube 12d contacted developing bias voltage contact spare 18b and with charging roller 10 contacted charging bias voltage contact spare 18c, these contact spares stretch out from the lower surface of lower frame 15, and, these contact spares 18a, 18b, 18c closely contact with ground connection pin 35a, developing bias voltage contact pin 35b, charging bias voltage contact pin 35c (Figure 42) respectively.

As shown in figure 42, these contact pins 35a, 35b, 35c settle like this: photosensitive drum ground connection pin 35a and charging bias voltage contact pin 35c be placed in transfer roll along recording medium be transported away to the side in downstream, developing bias voltage contact pin 35b be placed in transfer roll 6 along recording medium be transported away to a side of upstream.Correspondingly, as shown in figure 43, contact spare 18a, 18b on the handle box B, 18c have similar arrangement: photosensitive drum earthing member 18a and charging bias voltage contact spare 18c be placed in photosensitive drum 9 along recording medium be transported away to upstream one side.Developing bias voltage contact spare 18b settle photosensitive drum 9 along recording medium be transported away to the side in downstream.

The configuration of the electric contact spare of handle box B is described with reference to Figure 51 now.Subsidiary pointing out, Figure 51 is the schematic plan view that photosensitive drum 9 and electrical equipment contact spare 18a, 18b, 18c position concern.

Shown in Figure 51, contact spare 18a, 18b, 18c are placed in an end of photosensitive drum 9, hold the relative other end vertically laying flange gear 9c along this drum therewith.Developing bias voltage contact spare 18b is placed in a side (promptly laying that side of developing device 12) of photosensitive drum 9, and photosensitive drum contact spare 18a and charging bias voltage contact spare 18c then are placed in the opposite side (promptly laying a side of cleaning device 13) of photosensitive drum.Photosensitive drum contact spare 18a and charging bias voltage contact spare 18c settle along straight line basically, and in addition, developing bias voltage contact spare 18b is placed in the vertical outside a little place, position than photosensitive drum earthing member 18a and charging bias voltage contact spare 18c along photosensitive drum 9.Photosensitive drum contact spare 18a, developing bias voltage contact spare 18b and charging bias voltage contact spare 18c are successively away from the outer peripheral face of photosensitive drum 9 distance of nearest, the contact spare 18c of contact spare 18a and photosensitive drum and photosensitive drum (be farthest), also have, the area of developing bias voltage contact spare 18b is greater than the area of photosensitive drum contact spare 18a and charging bias voltage contact spare 18c.Say that further developing bias voltage contact spare 18b, photosensitive drum contact spare 18a and charging bias voltage contact spare 18c are the arm shape parts and outside place, the contacted position of photosensitive drum 9 inside surfaces that vertically is placed in photosensitive drum contact spare 18a along photosensitive drum 9.

As mentioned above, by location and the electrical equipment contact spare that is connected side arrangement handle box (it can be installed in the imaging system) and imaging system at handle box, can improve the location accuracy between the contact pin of these the contact spares of handle box and imaging system, thereby prevented that bad electricity from engaging, and, settle these contact spares by non-drive side, the structure of the contact pin of imaging system is simplified and made it miniaturization at handle box.

Moreover, because these contact spares of handle box are placed in the handle box inside of frame, can prevent that foreign matter from adhering to these contact spares, thereby prevent the corrosion of these parts, further prevented these part distortion that causes by external force.Moreover because developing bias voltage contact spare 18b is placed in a side of developing device 12, photosensitive drum contact spare 18a and charging bias voltage contact spare 18c are placed in a side of cleaning device 13, and the arrangement of electrode can be simplified in the handle box, thereby can make the miniaturization of handle box volume.

To list the size of various parts among the described embodiment below, still, should be noted that these sizes only are examples, example that the present invention is not limited thereto:

1) distance (X of photosensitive drum 9 and photosensitive drum contact spare 18a ₁) about 6.0mm;

2) distance (X of photosensitive drum 9 and charging bias voltage contact spare 18c ₂) about 18.9mm.

3) distance (X of photosensitive drum 9 and developing bias voltage contact spare 18b ₃) about 18.9mm.

4) wide (Y of charging bias voltage contact spare 18c ₁) about 4.9mm.

5) long (Y of charging bias voltage contact spare 18c ₁) about 6.5mm.

6) wide (Y of photosensitive drum contact spare 18a ₃) about 5.2mm.

7) long (Y of photosensitive drum contact spare 18a ₄) about 5.0mm.

8) wide (Y of developing bias voltage contact spare 18b ₅) about 7.2mm.

9) long (Y of developing bias voltage contact spare 18b ₆) about 8.0mm.

10) the about 28.6mm of flange gear 9c diameter (Z1).

11) the about 26.1mm of gear 9i diameter (Z2).

12) the about 6.7mm of flange gear 9c wide (Z3).

13) the about 4.3mm of gear 9i wide (Z3).

14) number of teeth of flange gear 9c is 33.

15) number of teeth of gear 9i is 30.

Flange gear 9c and gear 9i are described now. Gear 9c, 9i are spiral gears.When driving force when imaging system reaches flange gear 9c, be installed on the lower frame 15 and the photosensitive drum 9 that leaves the slit is subjected to its thrust and turns to the flange gear, and photosensitive drum be positioned on the limit of upper ledge 15.

Gear 9c uses in the handle box that forms black elephant comprising magnetic color tuner.When the black imaging handle box that resembles when being installed in the imaging system, this gear 9c is meshed with a gear of imaging system and makes the driving force of photosensitive drum rotation with admittance, and it also is meshed with the gear of developing tube 12d so that the developing tube rotates simultaneously.Gear 9i is meshed with a gear that is bonded on the imaging system transfer roll 6 so that the transfer roll rotation.In this case, rotary load influences transfer roll 6 hardly.

Attach and point out that gear 9i uses in comprising the color imaging handle box of nonmagnetic toner.When the color imaging handle box was installed in the imaging system, gear 9c was meshed with a gear of imaging system and makes the driving force of photosensitive drum rotation with admittance.On the other hand, gear 9i is meshed with gear on being bonded on imaging system transfer roll 6 so that the transfer roll rotation, and it also is meshed with the gear of the developing tube 12d that is used for nonmagnetic toner so that the rotation of developing tube simultaneously.The diameter of flange gear 9c is greater than the diameter of gear 9i, and width is greater than the width of gear 9i, and the number of teeth is more than the number of teeth of gear 9i.Thereby when bigger load loaded on gear 9c, gear 9c admitted driving force so that photosensitive drum 9 more stably rotate, the while also can be to the bigger driving force of developing tube transmission that is used for magnetic color tuner so that the developing tube more stably rotate.

Attach and point out that as shown in figure 43, each contact pin 35a-35c is bearing in the corresponding inner top cover 36 by this way: it can move in the supporting lid but can not be separated from it.Each contact pin 35a-35c all by corresponding conductive pressure spring with above lay and cover 36 printed circuit board (PCB) and make electricity and engage.Subsidiary pointing out, the charging bias voltage contact spare 18c that is connected on the contact spare 35c has arc bend near the pivot of top ON/OFF lid 19, so, the ON/OFF lid 19 of installing process cartridge B can rotate around pivot 19b along direction shown in the arrow R to open and close this ON/OFF lid, and the charging bias voltage contact spare 18c that (minimum stroke is promptly arranged) recently from pivot 19b can engage effectively with contact pin 35c.(location)

Handle box B installed and ON/OFF lid 19 situations of closing under, position so that make distance between photosensitive drum 9 and the lens devices 1c and the distance between photosensitive drum 9 and the original paper glass support parts 1a all keep constant.Now this location will be described.

As shown in Figure 8, positioning tab is formed on the lower frame 15 at photosensitive drum 9 places, is positioned near two vertical ends of this frame.As shown in Figure 5, when upper and lower frames 14,15 was bonded with each other, these lugs 15m protruded upward by the hole 14g that is formed on the upper ledge 14.

Moreover, as shown in figure 44, including lens arra 1c2 is installed on the top ON/OFF lid 19 by trunnion 1c3 with the lens devices 1c that reads original paper 2, this lens element device can be done slight rotation and be subjected to the influence of energizing spring 39 and downwards (Figure 44) around this trunnion, thereby, when handle box B is installed on the loam cake 19 and loam cake when closing, as shown in figure 44, the lower surface of lens devices 1c will be adjacent with the positioning tab 15m of handle box B, the result, when handle box B is installed among the imaging system A, lens combination 1c2 among the lens devices 1c just can accurately be determined with the distance that is installed in the photosensitive drum 9 in the lower frame 15, thereby the light image that reads with optical mode from the original paper 2 can scioptics array 1c2 and project on the photosensitive drum 9.

Moreover, as shown in figure 45, in lens element 1c, providing register pin 40, this register pin stretches out from loam cake 19 slightly by the hole 19c that covers on being formed at.As shown in figure 46, register pin 40 is got the two vertical ends of reading slit Z (Fig. 1 and Figure 46) at original paper and is stretched out slightly.Thereby, when handle box B is installed on the loam cake 19 and loam cake is closed and imaging when beginning operation, as mentioned above, because the lower surface of lens devices 1c abuts against on the positioning tab 15m, original paper glass support part 1a moves along with register pin, as a result, be placed on the original paper 2 on the original paper glass support part 1a and the distance that is placed between the photosensitive drum in the lower frame 15 remains unchanged, thereby will shine exactly on the photosensitive drum 9 from the light of original paper 2.So,, be possible and obtain high-quality image because the written information on the original paper can accurately read and can accurately be exposed on the photosensitive drum 9 with optical mode.(drive and transmit)

Below, explanation is sent to the driving force that is installed in the photosensitive drum in the handle box 9 among the imaging system A.When handle box B was installed in the imaging system, the rotating shaft 9f of photosensitive drum 9 was supported by the shaft support parts 33 of above-mentioned imaging system.As shown in figure 47, shaft support parts 33 comprise: a support 33a and an adjacency section 33b who is used for developing tube 12d rotating shaft 12d2 who is used for photosensitive drum rotating shaft 9f.On this support 33a, be formed with one and have the 33c of the portion that overlaps of predetermined overhang L (in described embodiment, being 1.8mm), thereby prevent that photosensitive drum rotating shaft 9f from upwards beating.Moreover when photosensitive drum rotating shaft 9f was supported by support 33a, developing tube rotating shaft 12d2 was adjacent to adjacency section 33b, thereby prevents the whereabouts of this rotating shaft 12d2.Also have, when top ON/OFF lid 19 was closed, the positioning tab 15p of the lower frame 15 that stretches out from handle box B upper ledge 14 then was adjacent on the adjacency section 19c of switch cover 19.

Thus, when the driven wheel 41 by the imaging system that is meshed with the flange gear when the flange gear 9c of photosensitive drum 9 transmits driving force, handle box B can be subjected to one and tend to make it to center on the acting force of photosensitive drum rotating shaft 9f along the rotation of direction shown in the arrow I among Figure 47, but, because the rotating shaft 12d2 of developing tube is adjacent to adjacency section 33b and the positioning tab 15p of the lower frame 15 that stretches out from upper ledge 14 is adjacent to the adjacency section of loam cake, so, just stoped the rotation of handle box B.

As mentioned above, though the lower surface of lower frame 15 plays a part leader record medium 4, but because lower frame is by making main body 16 adjacent location own and above-mentioned imaging system, so photosensitive drum 9, transfer roll 6 and the position relation that is used between guide part 15h1, the 15h2 of recording medium 4 maintain very high degree of accuracy, thus accurately conveying recording medium with transmit image.

In the driving force transport process, the developing tube is not only because of acting on the turning effort power of handle box B, and because of when the acting force downward bias that when the gear 12j of developing tube transmits driving force, is produced from flange gear 9c.In this case, if developing tube rotating shaft 12d2 is not adjacent with adjacency section 33b, the developing tube will be during imaging operation downward bias always, the result, developing tube 12d may move down, and/or developing tube 12d is installed lower frame 15 may be out of shape.But in described embodiment, because the rotating shaft 12d2 of developing tube abuts against on the 33b of adjacency section like clockwork, above-mentioned shortcoming just can not take place.

Attach and point out that as shown in figure 20, developing tube 12d is partial to photosensitive drum 9 because of the spring 12j that is subjected to developing tube supporting member 12i influences, in this case, adopt configuration as shown in figure 48, help the slip of developing tube supporting member 12i.In other words, the supporting member 12m frame that is used to support developing tube rotating shaft 12d2 is at frame support bracket 12n, and supporting member 12m can slide along the slot 12n1 that is formed on this frame support bracket.In this configuration, as shown in figure 49, the adjacency section 33b that frame support bracket 12n abuts against shaft support parts 33 goes up and is being supported therefrom.At this moment, supporting member 12m just can slide in a direction indicated by the arrow along slot 12n1.Subsidiary pointing out, in described embodiment, the tiltangle of adjacency section 33b (Figure 47) is about 40 degree.

Moreover developing tube 12d can not be supported by the rotating shaft of developing tube yet.For example, as Figure 52 A, shown in the 52B, it can be supported by the lower end of developing tube supporting member 52 on its both ends, and this supporting member is supported by lower frame 15, and 15 of lower frames are supported by the receptacle 53 that is formed on the imaging system again.

In addition, in described embodiment, the flange gear 9c of photosensitive drum 9 is meshed with driven wheel 41, as follows to flange gear transmission driving force: the line of flange gear 9c rotation center and driven wheel 41 rotation centers as shown in figure 47, depart from perpendicular line in the counterclockwise direction with low-angle α (in described this embodiment about 1 °) by flange gear 9c rotation center, at this moment, the direction F points upwards that passes to the driving force of flange gear from driven wheel 41.In general, prevent floating of handle box though can be set to 20 ° or the bigger power of pointing to downwards that produces by the number of degrees of angle α, in described embodiment, angle α is set to about 1 °.

Be set to 1 ° by above-mentioned angle α, when top ON/OFF lid 19 shows to opening when taking out handle box B along arrow j, flange gear 9c also can't help driven wheel 41 and pins, thereby it can steadily take off from driven wheel 41.Moreover when as implied above being directed upwards towards of driving force direction of transfer F, the rotating shaft of photosensitive drum is upwards pushed away, thereby helps it is taken off from photosensitive drum support 33a.Yet in described embodiment, because the 33c of portion that overlaps is formed on the support 33a, photosensitive drum rotating shaft 9f can not take off from photosensitive drum support 33a.(recycling)

Handle box with above-mentioned structure can be recycling, in other words, can collect the handle box of using from the market, and parts wherein can be again in order to form new handle box.Now to this recycling the explanation.In general, the past is disposing or throw away with the handle box of crossing, yet according to present embodiment, handle box B collects from the market with resources conseravtion and physical environment after can using up at the toner in the toner storage case.Then, be upper and lower frame 14,15 with the process cartridge disassembling of collecting, and they are cleaned, after this, recycling parts and new parts are assembled in upper ledge 14 or the lower frame 15, dose new toner again in toner storage case 12a, the mode of planting can obtain new handle box whereby.

More particularly, make engaging between locking pawl 14a that upper and lower frames 14,15 is bonded with each other and locking hole 15a, locking pawl 14a and locking lug 15b, locking pawl 14c and locking hole 15d, locking pawl 15c and the locking hole 14b (Fig. 4,8,9) by unclamping, upper and lower frames 14,15 can be separated from each other at an easy rate.For example, this disassembling section can be by being placed on the dismounting utensil 42 also with shown in the push rod 50 with the handle box B that crosses.Even need not dismantle utensil, also can be by pushing locking pawl 14a, 14c, 15c and demounting process cartridge.

As mentioned above, after upper ledge 14 and lower frame 15 are separated from one another (Fig. 8,9), clean this two frame to remove attachment removal or to remain in used toner in the handle box with the gas technology of brushing.In this case, because following parts directly contact with toner, quite a few used toner is arranged attached on photosensitive drum 9, developing tube 12d and/or the cleaning device 13, on the other hand, because charging roller 10 does not directly contact with toner, thereby used toner or hardly is not attached on the charging roller 10.Therefore, charging roller 10 is than photosensitive drum 9, easier cleanings such as developing tube 12d.In this case, according to described embodiment, because charging roller 10 is mounted in upper ledge 14 rather than lower frame 15 times, lower frame 15 is equipped with photosensitive drum 9, easier cleanings such as developing tube 12d.In this case, according to described embodiment, because charging roller 10 is mounted in upper ledge 14 rather than lower frame 15 times, lower frame 15 is equipped with photosensitive drum 9, developing tube 12d and cleaning device 13, thereby the upper ledge 14 easier cleanings that separate with lower frame 15.

Dismounting and cleaning process are shown in Figure 38 B.At first, as mentioned above that upper and lower frame 14,15 is separated from one another, secondly, dismantle and clean upper ledge 14 and lower frame 15 independently, after this,, charging roller 10 separated with it also cleaned upper ledge 14; For lower frame, photosensitive drum 9, developing tube 12d, developing sheet 12e, cleaning foil 13a etc. are separated with it and cleaned, so, dismounting is very simple with cleaning process.

Dispose after the toner, as shown in Figure 9, hole 12a1 seals with new coverlay 28 again, in the toner storage case, add new toner by the toner charging aperture 12a3 that is formed on toner storage case 12a side, with lid 12a3 interpolation hole 12a3 is covered again, after this, by engaging between locking pawl 14a and locking hole 15a, locking pawl 14a and locking lug 15b, locking pawl 14a and the locking hole 15d upper ledge 14 and lower frame 15 are bonded with each other together again, thereby form an operable handle box.

Subsidiary pointing out, when upper and lower frames is bonded with each other, though locking pawl 14a and locking hole 15a, locking pawl 14a and locking lug 15b etc. are mutual lockings, but during same handle box recycled for multiple times, locking force between locking pawl and the locking hole may weaken, in order to solve this kind problem, in described embodiment, near four jiaos of framework, be formed with threaded hole, in other words, by at the assembling groove 14d on the upper ledge 14 (Fig. 8) with assembling lug 14e goes up and form threaded hole respectively on (matching with groove 14d) assembling lug 15e on the lower frame 15 and (matching with lug 14e) assembling groove 15f, then when locking force weakens because of the locking pawl, then last, lower frame 14,15 are bonded with each other and assemble lug and assembling groove mutually after the assembly, screw twisted be combined in this thread engagement hole, thereby make two frames 14 up and down, 15 are bonded together securely.Imaging operation

Below explanation is equipped with the imaging operation of the imaging system A of handle box B.

At first, original paper 2 is placed on the original paper glass support part 1a shown in Figure 1, then, starts button A3 when pressing to duplicate, light source 1c1 connects and original paper glass support part 1a just moves back and forth at the right and left of this imaging system upper edge Fig. 1, so that read the information that writes on the original paper with optical mode.On the other hand, be accompanied by when original paper read, paper feed roller 5a and a pair of registration roller 5c1,5c2 rotation are with to imaging station conveying recording medium 4.Photosensitive drum 9 is corresponding to this paired registration roller 5c1, the conveying of 5c2, periodically charge equably along d direction rotation among Fig. 1 and by charging device 10, then, be exposed on the photosensitive drum 9 via exposure device 11, on photosensitive drum 9, form latent image thus by getting the light image that read apparatus 1 reads.

When forming latent image, the developing device 12 of handle box B brings into operation driving toner conveyance device 12b, forms toner layer thereby the toner among the toner storage case 12a is transported in the developing tube and on the developing tube 12d that is rotating.Then, by go up to load to developing tube 12d with photosensitive drum 9 on the voltage of identical charging polarity and current potential is arranged, it is toner image that latent image on the photosensitive drum 9 is developed.In described embodiment, voltage that will about 1.2KVVpp, 1590Hz (square wave) is loaded on the developing tube, and recording medium 4 is transported between photosensitive drum 9 and the registration roller 6.Have and the opposite polarity voltage of toner by loading on registration roller 6, the toner image on the photosensitive drum 9 is transferred and is transferred on the recording medium.In described embodiment, registration roller 6 is by specific insulation about 10 ⁹The foam EPDM of Ω-cm makes, and the external diameter of the 20mm that has an appointment, loads on this transfer roll as transfer voltage with the voltage of-3.5KV.

After toner image was sent to recording medium, photosensitive drum 9 continued the rotation along direction d, and simultaneously, the residual toner of staying on the photosensitive drum 9 is removed by cleaning foil 13a, and the toner that is eliminated is collected in the used toner storage case 13c via extruded paper 13b.On the other hand, by travelling belt 5d, transfer printing has the recording medium 4 of toner image to be sent in the device for fixing 7, this toner image this through the heating with the pressurization and for good and all fixation on recording medium 4.Then, recording medium is discharged by a pair of distributing roller 5f1,5f2.In this way, the information on the original paper is recorded on the recording medium.

Below, other embodiment will be described.In above-mentioned first embodiment, sample shown in Figure 53 just has been described, in this example, developing sheet 12e and cleaning foil are by pin 24a, 24b and attached on the framework, by being formed at the assembling lug 43a on developing tube 12e and the cleaning foil 13e two vertical ends by force, 43b, infix form is corresponding assembling groove 44a on imaging system main body 16,44b, and when making developing sheet 12e and cleaning foil be installed on the lower frame 15, be used to accept assembling slice 12e, 45 of the pin holes of the above-mentioned pin that 13a uses can be formed on assembling lug 43a, near the 43b, corresponding pin hole then can be formed at main body 16 interior (subsidiary the pointing out of imaging system, at assembling lug 43a, the 43b place can use semi-piercing or semicircle boss).

Under this configuration mode, when making fit engagement between aforementioned sheet shaped piece 12e, 13a and the lower frame loosening owing to handle box B is recycling repeatedly, can sheet shaped piece 12e, 13a be assembled on the lower frame securely by pin.

Moreover, in first embodiment, as shown in figure 29, the outer diameter D that photosensitive drum 9 just has been described is less than distance L between photosensitive drum guiding parts 25a, the 25b, so that photosensitive drum 9 is installed in the example of lower frame 15, but shown in Figure 54, when photosensitive drum 9 is installed to upper ledge 14, the outer diameter D of photosensitive drum 9 also can be less than the distance L between photosensitive drum guiding parts 2a, the 2b, so that photosensitive drum can finally be installed in the upper ledge, thereby prevent the damage on photosensitive drum 9 surfaces, this is identical with situation among first embodiment.Subsidiary pointing out in Figure 54, is marked by identical with it reference number number with element that identical function is arranged or parts in first embodiment.

Then, by the mutual locking between locking lug 47a and the locking hole 47, and make it fixing and upper and lower frames 14,15 is bonded with each other by pin 48.

Again as shown in figure 35, in first embodiment, photosensitive drum 9 is supported by support unit 26 with developing tube 12d, when the end at photosensitive drum 9 is provided with flange gear 9c and when its other end is provided with transfer roll gear 49, can adopts the structure shown in Figure 55.Subsidiary pointing out shown in Figure 55, has with function is identical in first embodiment parts and is marked with identical reference number number.

More particularly, in Figure 55, flange gear 9c and transfer roll gear 49 are by bonding, pressure fitted etc. and be contained in the two ends of photosensitive drum 9 respectively.Come the drop-center 49a of rotatably mounted transfer roll gear 49 with the support 33a of support unit 26, make the photosensitive drum location.In this case, in order to make photosensitive drum 9 ground connection, have the photosensitive drum ground plate 50 of L shaped connecting portion to be installed in the inside surface of photosensitive drum and contact with it with one, 51 of photosensitive drum grounding shafts that pass transfer roll gear 49 contact with photosensitive drum ground plate 50 consistently.Photosensitive drum grounding shaft 51 is made by conductive metal alloy such as stainless steel etc., photosensitive drum ground plate 50 is also made by conductive metal alloy such as copper, stainless steel or the like, when handle box B was installed among the imaging system A, the top 51a of photosensitive drum grounding shaft 51 was supported by support unit 26.In this case, the top 51a of photosensitive drum grounding shaft 51 contacts with the photosensitive drum ground contact pin of imaging system, thereby makes photosensitive drum ground connection.In this case, as in first embodiment, can improve the bearing accuracy between photosensitive drum 9 and the developing tube 12d owing to use single support unit 26.

Moreover after a collection of developing device 12 was set, this kind handle box B not only can be used to form above-mentioned monochrome image, also can be used for forming multicolor image (two-tone image, three-colour image or full-colour image).Again furtherly, method of development can be the following method of knowing: two-component magnetic brush developing type, pouring liquid developing type, following touch (touchdown) developing type or cloud and mist (cloud) developing type.In addition, in first embodiment, charging device is the device of so-called contact charge type, promptly in other common charging techniques, form three screen layers and on these three screen layers, lay the metal cap of aluminum with tungsten filament, positive ion or negative ion that the back that adds high pressure on this tungsten filament is produced move on the photosensitive drum 9, thereby are charged equably in photosensitive drum 9 surfaces.

Attach and point out that the device of contact charge type can be such as sheet type (charge sheet), pad type, piece type, bar type or line style and aforementioned roll shape.Moreover being used to remove the cleaning device of staying remaining toner on the photosensitive drum 9 can be brush type or magnetic brush type and sheet type.

Further say, handle box B comprises one year and resembles part (a for example electricity photography photosensitive part) and at least a treating apparatus, so, as above-mentioned structure, handle box can comprise on the whole carrying and resembles part and charging device, is installed in the imaging system removably as a unit; Perhaps comprise carrying resembling part and developing device, be installed in the imaging system removably as a unit with integral form; Perhaps comprise carrying resembling part and cleaning device, be installed in the imaging system removably as a unit with integral form; Perhaps comprise carrying resembling part and two or more treating apparatus, be installed in the imaging system removably as a unit with integral form.In other words, handle box comprises charging device, developing device or cleaning device and electricity photography photosensitive part with integral form, is installed in the imaging system removably as a unit; Perhaps to comprise charging device on the integral form, at least one in developing device and the cleaning device and electricity photography photosensitive part are installed in the imaging system as a unit removably; Perhaps comprise developing device and electricity photography photosensitive part, be installed in the imaging system removably as a unit with integral form.

Have again, in described embodiment, imaging system is an electricity photography duplicating machine (Xerox), plants duplicating machine but the present invention is not limited thereto, but go for various imaging systems, for example laser printer, facsimile recorder, word processor and similar device etc.

Now, will be described in detail the above-mentioned driving force that is sent to photosensitive drum 9.Shown in Figure 56, driving force is sent to driven wheel G6 via gear train G1-G5 from the CD-ROM drive motor 54 that is installed in the imaging system main body 16, is sent to the flange gear 9c that is meshed with this driven wheel by driven wheel G6 again, thereby makes photosensitive drum 9 rotations.Also have, the driving force of CD-ROM drive motor 54 is rotated from gear 5a.Have, the driving force of CD-ROM drive motor 54 is sent to the driving wheel 7a of device for fixing 7 via gear G12, G13 from gear G1 again.

Shown in Figure 57, flange gear (first gear) 9c and gear (second gear) 9i all are arranged on the lower frame 15 for another example, and gear 9c, 9i then expose from the hole 15g that is formed on the lower frame 15.In the time of in handle box B is installed on imaging system A, shown in Figure 59, driven wheel G6 is meshed with the flange gear 9c of photosensitive drum 9, and, then be meshed near the gear 9i of gear 9c with the gear 55 of transfer roll 6.Subsidiary pointing out, in Figure 59, the parts of imaging system with solid line represent, the parts of handle box dot.

The number of teeth of gear 9c is different from the number of teeth of gear 9i, thereby uses when comprising the black imaging handle box of magnetic color tuner, and the rotating speed of developing tube 12d is different from the rotating speed of developing tube when using the color imaging handle box that comprises nonmagnetic toner.In other words, when the black imaging handle box that comprises magnetic color tuner was installed in the imaging system, shown in Figure 60 A, flange gear 9c was meshed with the gear 12k of developing tube 12d.On the other hand, when the color imaging handle box that comprises nonmagnetic toner was installed in the imaging system, shown in Figure 60 B, gear 9i is meshed with the gear 12k of developing tube 12d so that this developing tube rotation.

As mentioned above, the diameter that is used for gear 9c is bigger than the diameter of gear 9i, the width number of teeth wideer than the width of gear 9i, gear ratio gear 9i is many, thereby, when bigger load is loaded into gear 9c, gear 9c can accurately accept driving force so that photosensitive drum 9 stably rotates and bigger driving force is sent to the developing tube 12d that is used for magnetic color tuner, thereby developing tube 12d is stably rotated.

The most preferred embodiment of relevant this kind cleaning foil below will be described when developing sheet 12e and cleaning foil 13a are forced to be assembled to the 44a of department of assembly, the 44b of the imaging system main body 16 shown in Figure 53.Subsidiary pointing out, though below only cleaning foil 13a is described, developing sheet 12e can regard as similarly.

Figure 61 is the skeleton view that shows cleaning foil 13a and the 44b of department of assembly, and Figure 62 and 63 is its planimetric maps.Shown in Figure 61 to 63, one tapering part 43b1 is formed at the bottom that is formed at the assembling lug 43b on vertical end of sheet supporting member 13a1 by cutting sth. askew, simultaneously, one tapering part 44b1 is formed at the top of the 44b of department of assembly by the imaging system main body 16 of cutting sth. askew, therefore, when passing through assembling tapered portion 43b1, when 44b1 made assembling lug 43b be seated to the 44b of department of assembly, lug 43b can successfully insert the 44b of department of assembly.

Subsidiary pointing out, shown in Figure 63, in the time will assembling lug 43b and be assembled to the 44b of department of assembly, the base 43b2 of lug 43b and the base 44b2 of the 43b of department of assembly are adjacent, thereby can adjust the insertion degree of cleaning foil 13a, like this, when making up tapered portion 43b1 on assembling lug 43b, preferably making aforementioned base 43b2 is the left side.

Moreover, though when assembling sheet support unit 13a1 assembling lug 43b as above-mentioned be to be forcibly fitted into the 44b of department of assembly, but in automated assembling operations, shown in Figure 64, lower frame 15 can be by suitable utensil (not showing bright) along the tractive of direction shown in the arrow so that elastic deformation takes place in it, thereby increased the distance between the 44b of department of assembly, then, shown in Figure 65, sheet supporting member 13a1 then is mounted between the 44b of department of assembly.In this case, as mentioned above, assembly manipulation can successfully carry out because of the existence of tapered portion 43b1,44b1, after removing above-mentioned utensil, shown in Figure 66, the distortion of lower frame 15 is then recovered because of elasticity, is assembled to the 44b of department of assembly thereby will assemble lug 43b.Further, advance the 44b of department of assembly, can make the inerrably mutual locking of assembling lug 43b and the 44b of department of assembly along direction shown in Figure 66 arrow.According to this mode, cleaning foil can assemble at an easy rate.

In addition, need not be formed at the inclination tapered portion 43b1 on the assembling lug 43b, shown in Figure 67, also can make circle to the assembling lug, in this case, still can obtain identical sample technique effect with certain radius.

Shown in Figure 68, the tapered portion 43b1 that is formed on the assembling lug 43b does circular by the bottom of the tapered portion 43b1 that cuts sth. askew for another example.In this case, the assembling lug can more successfully be assembled to the 44b of department of assembly.Also have,,, also can improve the stationarity of assembling to a certain extent when the bottom that makes assembling lug 43b forms above-mentionedly when circular even do not remove to form tapered portion 43b1.

In addition, in the embodiment shown in Figure 69, adhere to the tapered portion of sheet supporting member 13a1, can make aforementioned lug be assembled to the department of assembly of imaging system main body smoothly thus with PTFE band 13a3 etc. and so on ribbon.Have again, in another embodiment shown in Figure 70, can on tapered portion 13b1, be coated with the series lubricant agent of silicone oil, railway grease, also can improve the flatness that the assembling lug is assembled to imaging system main body department of assembly whereby with lubricated this tapered portion.

Subsidiary pointing out, when PTFE band 13a3 adheres to tapered portion or when having lubricant to be coated in this tapered portion, though it is not essential forming tapered portion 43b on the 43b of department of assembly, for the accuracy that keeps engaging should not be set to PTFE band or lubricant on the base 43b2 as positioning reference.

As mentioned above, according to the present invention, described first and second frames can firmly be bonded with each other, and, a kind of handle box and a kind of imaging system can be provided, they can stand to increase even the number of times of repeated use (recycling) fully.

Have, according to the present invention, can provide a kind of handle box, a kind of imaging system and a kind of method that is used to assemble cleaning device are even these parts can firmly repeat assembling, also can adapt to the number of times that increases repeated use (recycling) fully.

Claims (11)

1. removable handle box that is used for image device comprises:

First and second frames (14,15);

Releasedly above-mentioned frame is locked together with the device that constitutes frame assembly (14a, 14c, 15a, 15b);

Be installed in the static photosensitive part (9) on the said frame assembly and be installed on the said frame and act on treating apparatus (10,12,13) on the photosensitive part, it is characterized in that:

Be provided with a plurality of coordination teat (14e, 14h, 15e), each all is located on first or second frame, and each teat is corresponding with it and be the recess (14d of complementary shape by releasably join on another frame one again to along a corresponding axial-movement, 15f, 15n), make that above-mentioned teat is subjected to the restriction of respective recess when carrying out above-mentioned joint, can not move along the direction perpendicular to above-mentioned axis, above-mentioned axis is spaced from each other and almost parallel.

2. according to the handle box of claim 1, it is characterized in that be provided with a plurality of teats (14h) on first frame, they vertically are spaced from each other along frame, corresponding a plurality of recesses (15n) are located at vertically being spaced from each other on second frame and along frame.

3. according to the handle box of claim 2, it is characterized in that, above-mentioned locking device comprise a plurality of be located on first frame and can with the pawl (14a) of teat (14h) transposition, this pawl engages with junction surface (15b) on being located at second frame.

4. according to the handle box of one of claim 1 to 3, it is characterized in that, above-mentioned treating apparatus be included in the latent image that develops on the photosensitive part device (12,12a).

5. according to the handle box of claim 4, it is characterized in that, the toner accommodating portion (12a) that is provided by first frame is provided above-mentioned developing apparatus, and locking device then comprises a plurality of pawls (14a) that are located on the above-mentioned toner accommodating portion outside surface and engage with junction surface (15a) on being located at second frame.

6. according to the handle box of one of claim 1 to 3, it is characterized in that above-mentioned treating apparatus comprises the device (13) that cleans photosensitive part.

7. according to the handle box of claim 6, it is characterized in that described cleaning device comprises that one collects the toner collection unit (13c) of the toner that falls from photosensitive part.

8. according to the handle box of one of claim 1 to 3, it is characterized in that described treating apparatus comprises the device (10) to the photosensitive part charging.

9. according to the handle box of claim 8, it is characterized in that described charging device comprises that one is installed in the charging roller (10) on first frame.

10. according to the handle box of one of claim 1 to 3, it is characterized in that described photosensitive part is rotating photosensitive drum (9).

11. an image device comprises:

One main body;

It is characterized in that also comprising:

According to the described handle box of above-mentioned any claim and releasedly above-mentioned handle box is installed to device on the described main body.

Images