CN102073240B - Image-forming apparatus - Google Patents
Image-forming apparatus Download PDFInfo
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- CN102073240B CN102073240B CN201010207372.3A CN201010207372A CN102073240B CN 102073240 B CN102073240 B CN 102073240B CN 201010207372 A CN201010207372 A CN 201010207372A CN 102073240 B CN102073240 B CN 102073240B
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Abstract
An image-forming apparatus includes: a plural image-holding members, each image-holding member holding an image and being rotatable around a rotation shaft; a frame member that at least partially defines a space for accommodating the plural image-holding members therein; a cover provided to the frame member to open and close the space with respect to an outside, an inner side of the cover being formed with rotation shaft insertion holes each for receiving an end portion of the rotation shaft of a corresponding one of the image-holding members accommodated in the space; a supporting shaft that supports the cover such that the cover is pivotable with respect to the frame member, the supporting shaft being inserted into a supporting shaft insertion hole provided to the frame member or to the cover, the supporting shaft insertion hole being elongated in a direction having a vertical component when the cover closes the space; and a positioning mechanism that positions the cover with respect to the frame member when the cover closes the space, the positioning mechanism including at least two projections that project from one of the frame member and the cover, and that are spaced apart from each other in a direction of an axis of the supporting shaft, and projection insertion holes provided to the other one of the frame member and the cover to receive corresponding projections when the cover closes the space.
Description
Technical field
The present invention relates to a kind of image forming apparatus.
Background technology
In image forming apparatus, need accurately to locate the image holding member keeping image.JP2006-3735 A and JP2005-266781 A all discloses and utilizes location-plate positioning image holding member, roller and/or handle box.JP2004-212986 discloses and is arranged on multiple handle box with on the stayed surface of differing heights layout.
Summary of the invention
The object of the invention is to, can be opened and closed and be provided with in the image forming apparatus of the lid of multiple patchhole having, each patchhole receives and supports the rotating shaft of a correspondence image holding member of multiple image holding member, the end of the rotating shaft of image holding member can be made when inserting in the hole described in described rotating shaft is inserted into more easily to insert corresponding inserting in the hole, thus reduce the danger stoping the misalignment inserted.
To achieve these goals, a first aspect of the present invention provides a kind of image forming apparatus, and this image forming apparatus comprises: multiple image holding member, and each image holding member keeps image and can rotate around rotating shaft; Frame parts, this frame parts is defined for the space holding described multiple image holding member at least in part; Lid, this lid is arranged on described frame parts, with relative to external opening and close described space, the inner side of this lid is formed with rotating shaft patchhole, and each rotating shaft patchhole is all for receiving the end of the rotating shaft of a described image holding member of the correspondence be contained in described space; Back shaft, this back shaft supports described lid, make described lid can relative to described frame parts pivotable, described back shaft insert be arranged on described frame parts or described in the back shaft that covers insert in the hole, when described lid closes described space, described back shaft patchhole is elongated on the direction with vertical component; And detent mechanism, when described lid closes described space, this detent mechanism makes described lid locate relative to described frame parts, this detent mechanism comprises: at least two protuberances, described at least two protuberances are outstanding from described frame parts and described lid, and are spaced apart from each other along the axis direction of described back shaft; And protuberance patchhole, described protuberance patchhole is arranged on another in described frame parts and described lid, to receive corresponding protuberance when described lid closes described space.
In a second aspect of the present invention, provide a kind of image forming apparatus, this image forming apparatus comprises: multiple image holding member, and each image holding member keeps image and can rotate around rotating shaft; First frame parts; Second frame parts, this second frame parts is relative with described first frame parts, to be defined for the space holding described multiple image holding member between described first and second frame parts at least in part, the inner side of this second frame parts is formed with the second rotating shaft patchhole, and each described second rotating shaft patchhole is all for receiving the end of the described rotating shaft of a described image holding member of the correspondence be contained in described space; Lid, this lid is arranged on described first frame parts, with relative to external opening and close described space, the inner side of this lid is formed with the first rotating shaft patchhole, and each described first rotating shaft patchhole is all for receiving the end of the described rotating shaft of a described image holding member of the correspondence be contained in described space; Back shaft, this back shaft supports described lid, make described lid can relative to described first frame parts pivotable, described back shaft insert be arranged on described first frame parts or described in the back shaft that covers insert in the hole, when described lid closes described space, described back shaft patchhole is elongated on the direction with vertical component; And detent mechanism, when described lid closes described space, this detent mechanism makes described lid relative to described first frame parts location, this detent mechanism comprises: at least two protuberances, described at least two protuberances are outstanding from described first frame parts and described lid, and are spaced apart from each other along the axis direction of described back shaft; And protuberance patchhole, described protuberance patchhole is arranged on another in described first frame parts and described lid, to receive corresponding protuberance when described lid closes described space.
In a third aspect of the present invention, described back shaft patchhole can be avette or elliptical shape.
In a fourth aspect of the present invention, the described rotating shaft of each image holding member can have tapered end, thus the diameter of described rotating shaft is reduced towards end.
In a fifth aspect of the present invention, each in described at least two protuberances all can have tapered end, thus the diameter of described protuberance is reduced towards end.
According to a first aspect of the invention, compared with not being elongated situation with back shaft patchhole, easier the end of the rotating shaft of each image holding member is inserted be arranged on described in the corresponding rotation shaft insertion hole that covers, thus reduce the danger stoping the misalignment inserted.
According to a second aspect of the invention, compared with not being elongated situation with back shaft patchhole, easier the end of the rotating shaft of each image holding member is inserted be arranged on described in the corresponding rotation shaft insertion hole that covers, thus reduce the danger stoping the misalignment inserted.
According to a third aspect of the invention we, be inserted into the back shaft that described back shaft inserts in the hole can rotate reposefully.
According to a forth aspect of the invention, compared with the situation that rotating shaft is not provided with tapered end, easier by corresponding the inserting in the hole of the rotating shaft of each image holding member insertion.
According to a fifth aspect of the invention, compared with the situation that protuberance is not provided with tapered end, easier by corresponding the inserting in the hole of each protuberance insertion.
Accompanying drawing explanation
Illustrative embodiments of the present invention is described in detail, in figure now with reference to following accompanying drawing:
Fig. 1 is the schematic diagram of the structure of the image forming apparatus illustrated according to an illustrative embodiment of the invention;
Fig. 2 is the stereogram that casing structure is shown;
Fig. 3 is the stereogram that the image formation unit be arranged in the main body of image forming apparatus is shown;
Fig. 4 is the plane that the first gripper shoe is shown;
Fig. 5 is the side view of the lid supporting mechanism seen along the direction represented by the arrow V-V in Fig. 4;
Fig. 6 is the stereogram similar with Fig. 2, and the lid towards closed position part movement is shown;
Fig. 7 is the stereogram similar with Fig. 6, and illustrates mobile than the lid closer to closed position in Fig. 6;
Fig. 8 is the stereogram similar with Fig. 6, and illustrates mobile than the lid closer to closed position in Fig. 7;
A to C in Fig. 9 is the sectional view that line Ⅸ b-Ⅸ b along Fig. 7 or line Ⅸ c-Ⅸ c along Fig. 8 take, and illustrates to cover and moves near closed position; And
Figure 10 A and 10B is the stereogram of the operation of the locking mechanism that lid is shown.
Detailed description of the invention
(1. illustrative embodiments)
The image forming apparatus of such as printer or duplicator and so on is provided with lid on the side of housing, such as, is arranged in such a way, that is: make lid be opened and closed, so that maintenance or replacing component parts, or removes paperboard.Below, using this image forming apparatus as embodiment, illustrative embodiments of the present invention is described.Fig. 1 schematically illustrates the structure in the main body of image forming apparatus.
In the description which follows, as shown in FIG., when user watches image forming apparatus from the front portion of image forming apparatus, horizontal direction is expressed as X-direction, is represented the right direction and left direction of observing from user respectively by X (+) and X (-); The fore-and-aft direction of image forming apparatus is expressed as Y direction, is represented rear and the front of image forming apparatus respectively by Y (+) and Y (-); Vertical direction is expressed as Z-direction, above and below being represented by Z (+) and Z (-) respectively.
(structure of image forming apparatus)
First, internal structure and the operation of image forming apparatus 1 will be described.Image forming apparatus 1 is suitable for forming full color printer, and comprise graphics processing unit (not shown), that this graphics processing unit receives the device from such as scanner or personal computer (not shown) and so on or carry out image procossing by the view data that telephone wire (not shown) etc. receives.Four image formation units 2Y, 2M, 2C, 2K being respectively used to yellow (Y), carmetta (M), cyan (C) and black (K) are set in image forming apparatus 1.Image formation unit 2Y, 2M, 2C, 2K are arranged to be spaced apart from each other substantially in the horizontal direction, and extend abreast, (therefore the vertical position of image formation unit 2Y, 2M, 2C, 2K reduces respectively with this order, the vertical position of image formation unit 2Y is higher than the vertical position of image formation unit 2K), whereby, the plane of placement of images forming unit 2Y, 2M, 2C, 2K is relative to horizontal direction (such as 10 degree) inclination at a certain angle.By image formation unit 2Y, 2M, 2C, 2K being arranged in the plane relative to horizontal direction inclination, compared with being arranged situation in a horizontal plane with image formation unit 2Y, 2M, 2C, 2K, reduce horizontal size.
Four image formation units 2Y, 2M, 2C, 2K all have substantially identical structure, and comprise: photosensitive drums 3, and this photosensitive drums 3 is rotated with certain speed around rotating shaft 3A (see Fig. 3) by driving, and are used as image holding member; Primary charging roller 4, this primary charging roller 4 charges to the surface of photosensitive drums 3; Developing cell 6, this developing cell 6 utilizes toner to develop the electrostatic latent image that photosensitive drums 3 is formed by the image exposure undertaken by exposing unit 5 (describing after a while); And cleaning unit 7, this cleaning unit 7 cleans the surface of photosensitive drums 3.Photosensitive drums 3 is by such as having drum that diameter is 30mm and the organic photo parts in its surface with external coating are formed.Photosensitive drums 3 rotates by the CD-ROM drive motor (not shown) as driver element.Charging roller 4 is such as the roll charger that is made up of core bar, and this core bar is coated with that synthetic resin or rubber are made and has the conductive layer of regulating resistance, and the core bar to charging roller 4 applies charging bias.In addition, the clearer for removing the impurity such as toner on the surface such as adhering to charhing unit 4 is arranged to the surface of contact charging roller 4.
In the description which follows, when without the need to differentiate between images forming unit 2Y, 2M, 2C, 2K, image formation unit is called image formation unit 2 simply.
In the below of image formation unit 2, exposing unit 5 is set, for exposing according to view data.Exposing unit 5 has four semiconductor laser unit (not shown)s, for launching the laser beam according to view data modulation.The four bundle laser beams launched from these semiconductor laser units are deflected by polygon mirror and scan, and are radiated at by the optical element of such as lens or mirror (not shown) and so in the photosensitive drums 3 of each image formation unit 2.Exposing unit 5 extends along the downside of four image formation units 2, and as previously described, these four image formation units 2 are arranged in the plane tilted relative to horizontal direction.Therefore, the optical path length being radiated at the laser beam in photosensitive drums 3 is entirely identical for each image formation unit 2Y, 2M, 2C, 2K.
Exposing unit 5 is arranged to be common to each image formation unit 2, and sequentially receives the view data of respective color from graphics processing unit.The laser beam irradiation launched from exposing unit 5 according to view data on the surface of the photosensitive drums 3 of correspondence, to form electrostatic latent image thereon.The electrostatic latent image be formed in the photosensitive drums 3 of respective color is developed by developing cell 6Y, 6M, 6C, 6K, to form the toner image of respective color.The toner image that order is formed in the respective color in the photosensitive drums 3 of image formation unit 2 by first transfer roll 11 multiple be transferred to intermediate transfer belt 10, this intermediate transfer belt 10 is arranged in the top of each image formation unit 2 obliquely, and is used as intermediate transfer element.
Intermediate transfer belt 10 is the ring-band shape parts supported by multiple roller tensioning.Specifically, intermediate transfer belt 10 is wound around around driven roller 12, backing roll 13, idler roller 14 and idler rollers 15, make intermediate transfer belt 10 by driven roller 12 along by the direction loopy moving shown in the arrow in Fig. 1, driven roller 12 rotates by keeping the special CD-ROM drive motor (not shown) of constant rotational speed.Intermediate transfer belt 10 has upper movable part and lower movable part, and lower movable part tilts relative to horizontal direction, the downstream of lower movable part is positioned to lower than the upstream extremity of lower movable part relative to the moving direction of this lower movable part.As intermediate transfer belt 10, the fexible film be made up of the synthetic resin of such as polyimides and so on can be used, wherein, in the end of film of synthetic resin by connections such as welding, to form annular tape member.Intermediate transfer belt 10 is arranged to make the photosensitive drums 3Y of lower movable part and image formation unit 2Y, 2M, 2C, 2K, 3M, 3C, 3K contact.
It should be noted that intermediate transfer belt 10, first transfer roll 11, driven roller 12, backing roll 13, idler roller 14, idler rollers 15 etc. are integrated into the single unit being referred to as intermediary transfer unit 9.
Arrange secondary transfer roller 17 in the position relative with backing roll 13 across intermediate transfer belt 10, this secondary transfer roller 17 is pushed against on intermediate transfer belt 10.Secondary transfer roller 17 is for making to be transferred in for the first time toner image secondary transfer printing on intermediate transfer belt 10 at the recording sheet 18 being used as recording medium.Specifically, when recording sheet 18 moves between secondary transfer roller 17 and intermediate transfer belt 10, recording sheet 18 is pressed against on intermediate transfer belt 10 by secondary transfer roller 17, whereby, the toner image of the yellow be transferred in overlappingly on intermediate transfer belt 10 (Y), carmetta (M), cyan (C) and black (K) is transferred on recording sheet 18 by pressure and electrostatic force.Recording sheet 18 transferred with the toner image of each color is upwards transported to fixation unit 19.Fixation unit 19 applies heat and pressure to recording sheet 18, with by the toner image of each color on recording sheet 18.Afterwards, recording sheet 18 through the outlet roller 20 of fixation unit 19, and is transported to distributing roller 22 by sheet material discharge path 21, and recording sheet 18 is discharged in the sheet material take-up reel 23 on the top being arranged at image forming apparatus 1 from this distributing roller 22.
There is given size and the recording sheet 18 be made up of prescribed material is contained in the sheet material accommodation section 24 be arranged in image forming apparatus 1, and be transported to alignment rolls 28 from sheet material accommodation section 24 one by one by sheet material feed rolls 25 and a pair roller 26 for sheet separation and conveying.Recording sheet 18 is further transported to the secondary transfer printing position be defined between intermediate transfer belt 10 and secondary transfer roll 17 from this alignment rolls 28 by alignment rolls 28, wherein alignment rolls 28 rotates with predetermined timing.
Toner Cartridge 29Y, 29M, 29C, 29K as toner container are arranged between sheet material take-up reel 23 and intermediate transfer belt 10.Toner Cartridge 29Y, 29M, 29C and 29K are respectively to developing cell 6Y, 6M, 6C and 6K supplying toner.
(structure of housing)
Next, the structure of the main body (or housing) 40 of image forming apparatus 1 is described with reference to Fig. 1 and Fig. 2.Fig. 2 is the stereogram of the structure that main body 40 is schematically shown, this main body 40 limits the profile of image forming apparatus 1.
As shown in Figure 2, main body 40 comprises vertically four pillar 41A to 41D that (Z-direction) extends and the multiple beams 42 be connected between pillar 41A to 41D.In addition, front baffle 43 as the first frame parts is arranged between the top of front side (or Y (-) side) pillar 41A, 41B, and the afterframe 44 as the second frame parts is arranged between the top of rear side (or Y (+) side) pillar 41C, 41D.Therefore, front baffle 43 and afterframe 44 are toward each other.Afterframe 44 is formed with the through hole 45 with rectangular shape.Front baffle 43 is provided with protecgulum 50, and this protecgulum 50 can move along by the direction shown in arrow " a ", to open and to close opening 46 (see Fig. 3).
In addition, as shown in fig. 1, main body 40 comprises demarcation strip 47, on this, demarcation strip 47 is in the top position (or position of Z (+) side of exposing unit 5) of exposing unit 5 between framework 43 and 44 and extends, to limit the space holding exposing unit 5, wherein go up demarcation strip 47 and be fixed to framework 43 and 44 in this space by welding etc.
As shown in Figure 2, be attached to front baffle 43 and comprise the first gripper shoe 70 with the protecgulum 50 be opened and closed, this first gripper shoe 70 has the first rotating shaft patchhole 72.Although do not illustrate in the drawings, protecgulum 50 can have the outer plate-shaped member of the outer surface surface of Y (-) direction (or towards) being attached to the first gripper shoe 70 be made up of plastics etc.Afterframe 44 within it surface (surface towards Y (-) direction) on be provided with second gripper shoe 80 with the second rotating shaft patchhole 82.
(structure of protecgulum 50 (the first gripper shoe 70) and lid supporting mechanism 60)
Will now describe protecgulum 50 (the first gripper shoe 70) and lid supporting mechanism 60.
Fig. 3 is the stereogram illustrated under the state of image formation unit 2 in the main body 40 being installed in image forming apparatus 1, and Fig. 4 is the plane that the first gripper shoe 70 is shown, Fig. 5 is the side view seen along the direction represented by the arrow V-V in Fig. 4.
As shown in Figures 2 and 3, protecgulum 50 is attached to front baffle 43 by a pair lid supporting mechanism 60 as pivoting centre, this supports the bottom of protecgulum 50 to lid supporting mechanism 60, whereby, protecgulum 50 can along by the direction pivotable shown in arrow " a ", with relative to external opening with close the inside the space with opening 46 that are limited to main body 40.Within this space, arrange four image formation units 2, the longitudinal direction (or axis of photosensitive drums 3) of each image formation unit 2 is extended along the fore-and-aft direction (or along Y direction) of image forming apparatus 1.Be arranged on by image formation unit 2 under the state of closing opening 46 in described space and with protecgulum 50, the rotating shaft 3A of each photosensitive drums 3 is supported between the first gripper shoe 70 and the second gripper shoe 80.Under this holding state, image formation unit 2 is spaced apart with upper demarcation strip 47.
When being arranged in non-flat forms or from a non-horizontal surface by image forming apparatus 1, such as, the framework of image forming apparatus 1 can deform, and forms bend in upper demarcation strip.This can make the bend of demarcation strip 47 contact with image formation unit 2, makes the position of photosensitive drums 3 relative to each other change whereby, and this can cause again the misalignment transfer printing of the toner image of each color on recording sheet 18.According in the image forming apparatus 1 of this illustrative embodiments, each image formation unit 2 is retained with upper demarcation strip 47 spaced apart, therefore, avoid the loose portion of demarcation strip 47 to contact with image formation unit 2, and suppress any change of the relative position between photosensitive drums 3.
Each lid supporting mechanism 60 comprises: bracket 61, and this bracket 61 is given prominence to along forward direction (or Y (-) direction) from front baffle 43; Support chip 62, this support chip 62 is given prominence to from the first gripper shoe 70; And back shaft 65.Framework 61 and support chip 62 all have a pair opposite wall be connected by connecting wall, make cross sectional shape be the shape of symbol " U " substantially, and in opposite wall, are formed with back shaft patchhole.The back shaft of bracket 61 and support chip 62 that back shaft 65 inserts each lid supporting mechanism 60 inserts in the hole, thus so that the first gripper shoe 70 (protecgulum 50) is attached to front baffle 43 pivotly.As shown in Figure 4, in lid supporting mechanism 60,60, the axis direction of each back shaft 65 is corresponding with the pivot axis O-O of protecgulum 50, pivot axis O-O to tilt certain angle (such as 10 degree) relative to horizontal direction, and this angle equals the inclination angle of the plane of wherein placement of images forming unit 2 substantially.
As shown in Figure 5, each back shaft 65 has circular cross section, and the back shaft patchhole (not shown) be formed in each bracket 61 also has round-shaped.On the other hand, be formed in back shaft patchhole 63 in each support chip 62 for having the elongated hole of cavetto end, when protecgulum 50 is closed and closes described space, this hole is elongated (or being elongated along direction vertical at least partly) on the direction with vertical component.Particularly, back shaft 65 has the circular cross section that diameter is 5mm, and back shaft patchhole 63 is 5mm and major axis dimension is the elongated hole of 6mm for minor axis dimension.This elongated hole can have elliptical shape, forms by by isolated two the congruent semicircles in two equal and parallel limits.
Will now describe the first gripper shoe 70.As shown in Figure 4, the first gripper shoe 70 is formed by the plate member of basic rectangle.A longitudinal edge along the first gripper shoe 70 forms rib 71, and the support chip 62,62 of lid supporting mechanism 60,60 is arranged on this rib 71.In addition, all there is basic pentagon shape and the thickness direction that the first rotating shaft patchhole 72 receiving the rotating shaft 3A of corresponding photosensitive drums 3 is formed as in the position to the vertical line segment of pivot axis O-O from each the first rotating shaft patchhole 72 with equal length along plate member extends.Like this, when protecgulum 50 around pivot axis O-O pivotable to close opening 46 time, the end of rotating shaft 3A starts to insert in corresponding first rotating shaft patchhole 72 at same time.As shown in Figure 9, each rotating shaft 3A has tapered end 3B, and diameter is reduced towards one end, so that inserted in the first rotating shaft patchhole 72 end of rotating shaft 3A.
First gripper shoe 70 and the second gripper shoe 80 by same material and the metallic plate of same thickness form.When being drilled with rotating shaft patchhole 72,82, the first gripper shoe 70 stacked on top of each other and the second gripper shoe 80 are bored a hole.Like this, because of boring, issuable burr and distortion can be substantially identical between the rotating shaft patchhole 72,82 of correspondence.This contributes to the positional misalignment suppressed between the end of each rotating shaft 3A.
In addition, as shown in Figure 4, each first rotating shaft patchhole 72 has hypotenuse section 72A, 72B, and hypotenuse section 72A, the 72B axis that (or Z axis) extends relative to is vertically asymmetric.Specifically, left hypotenuse section 72B is larger than right hypotenuse section 72A relative to the inclination angle of Z axis.Like this, even if the tapered end 3B of rotating shaft 3A is downward-sloping along forward direction (or Y (-) direction), end 3B also easily inserts in the first rotating shaft patchhole 72.
As shown in Figure 3, second gripper shoe 80 is formed by making the plate member of basic rectangle bending, make the second gripper shoe 80 along the formation of its longitudinal edge along the rib 81,81 that outward direction (Y (+) direction) is outstanding, one end of each rib 81,81 is fixedly attached to the inner surface of afterframe 44 by laser weld etc.Second gripper shoe 80 be formed all there is basic pentagon shape and receive the rotating shaft 3A of corresponding photosensitive drums 3 the second rotating shaft patchhole 82 ..., 82, make patchhole 82 ..., 82 to arrange along the longitudinal direction (or along X-direction) of the second gripper shoe.In addition, force application spring 83 is set to the inner surface (surface in the face of Y (-) direction) of the part above each second rotating shaft patchhole 82 of the second gripper shoe 80.This force application spring is that plate benging is become to have the cross section of basic V-shape and formed by a kind of passing through, and be attached to the second gripper shoe 80, bend is inwardly given prominence to, and the part between bend with free end extends in the second corresponding rotating shaft patchhole 82 along outward direction (Y (+) direction), to be used as pressing component.By this structure, by force application spring 83, along in downward direction, (Z (-) direction) presses the end in the insertion rotating shaft patchhole 82 of rotating shaft 3A.
Next, by explanation lid detent mechanism 90A, 90B.As shown in Figure 3, detent mechanism 90A, 90B are arranged on the top of front baffle 43, and are spaced apart from each other along the direction (X-direction) of pivotal axis O-O.It should be noted that the building block of right detent mechanism 90A is represented by the Reference numeral with suffix letter " A ", the building block of left detent mechanism 90B is represented by the Reference numeral with suffix letter " B ".But, when without the need to distinguishing them, omit letter.
Detent mechanism 90 comprises: alignment pin 91, and this alignment pin 91 is set to the top of front baffle 43, and outstanding from this top; And locating hole 93, this locating hole 93 is formed in the first gripper shoe 70.Therefore, alignment pin 91 is used as protuberance, and locating hole 93 is used as protuberance patchhole.Each alignment pin 91 has tapered end 92, and its diameter is reduced towards free end.During the first gripper shoe 70 moves with closing openings 46, alignment pin 91 sequentially inserts in corresponding locating hole 93.The length outstanding from front baffle 43 of alignment pin 91 is all identical for each detent mechanism 90A with 90B.
Detent mechanism 90A with 90B is arranged to make the length LA of the vertical line segment from detent mechanism 90A to pivot axis O-O shorter than the length LB of the vertical line segment from detent mechanism 90B to pivot axis O-O.Therefore, when protecgulum 50 is closed with closing openings 46, first the pin 91A of closer pivot axis O-O starts to be inserted in locating hole 93A, and afterwards, the pin 91B far away apart from pivot axis O-O starts to be inserted in locating hole 93B.
It shall yet further be noted that the locating hole 93A on right side is that (X-axis line direction) extends and have the elongated hole of cavetto end in the horizontal direction.Therefore, even if protecgulum 50 unexpectedly moves along the bearing of trend of back shaft 65, alignment pin 91A also easily inserts in locating hole 93A.
In addition, in the outside of the first gripper shoe 70, locking mechanism 95 is set, firmly to keep the protecgulum 50 of closing openings 46, and presses the end of rotating shaft 3A along in downward direction (Z (-) direction).As shown in Figure 10 A, 10B, this locking mechanism 95 comprises: bar 96, and this bar 96 can rotate along by the direction shown in arrow T; Movable platen 98, this movable platen 98 is engaged with bar 96 by gear train 97, and one end is formed with locking bolt 98A; And ram (strike) 99, this ram 99 is arranged on front baffle 43, for engaging with locking bolt 98A.After protecgulum 50 closes opening 46, the bar 96 of locking mechanism 95 is along when being rotated by the direction shown in arrow T, and locking bolt 98A is along being moved by the direction shown in arrow D, to be inserted in ram 9, so that protecgulum 50 is fixed to front baffle 43.In addition, the force application spring (not shown) be arranged on movable platen 98 has inserted the end of the rotating shaft 3A in the first rotational shaft insertion hole 72 along (Z (-) direction) pressing in downward direction, firmly to keep the end of rotating shaft 3A thus.
(for supporting the operation of the first gripper shoe 70 of photosensitive drums 3)
The operation of first gripper shoe 70 of the rotating shaft 3A for supporting photosensitive drums 3 is described now with reference to the A to C in Fig. 3, Fig. 6 to 8 and Fig. 9.Fig. 6 to 8 illustrates that the first gripper shoe 70 closes the stereogram of the operation of the direction movement of opening 46 towards this first gripper shoe 70.A to C in Fig. 9 is the sectional view that line Ⅸ b-Ⅸ b along Fig. 7 or line Ⅸ c-Ⅸ c along Fig. 8 take, to illustrate the first movement of gripper shoe 70 near closed position.
First, as shown in Figure 3, under the first gripper shoe 70 is opened the state opening opening 46, each image formation unit 2 inserts along upper demarcation strip 47 in the space be defined between framework 43 and 44.It should be noted that in the A to C in Fig. 3, Fig. 6 to 8 and Fig. 9, an image formation unit 2 is only shown, and eliminates the diagram of other three image formation units 2.In this condition, each image formation unit 2, be received in the correspondence second rotating shaft patchhole 82 of the second gripper shoe 80 towards one end (or towards backward directions one end) of direction of insertion, therefore, each image formation unit 2 is downward-sloping along forward direction (Y (-) direction).
Should also be noted that, when protecgulum 50 (the first gripper shoe 70) is opened to be positioned in horizontal plane (X-Y plane), minor axis vertically (Z-direction) extension of the axis of support patchhole 63 of lid supporting mechanism 60, and the long axis fore-and-aft direction (Y direction) of the back shaft patchhole 63 of lid supporting mechanism 60 extends, therefore, protecgulum 50 can move in the scope that the major axis dimension by back shaft patchhole 63 allows along Y (+) and Y (-) direction.
Then, the first gripper shoe 70 (protecgulum 50) starts along being rotated by the direction shown in arrow " a ", to close opening 46.Along with the surface of the first gripper shoe 70 (protecgulum 50) is closer to being parallel to gravity direction (Z-direction), the major axis of back shaft patchhole 63 is also closer to being parallel to gravity direction (Z-direction).Result, as as shown in the A in Fig. 9, protecgulum 50 (the first gripper shoe 70) moves down because its deadweight, whereby support chip 62 limit back shaft patchhole 63, along one end of long axis direction, (part of the upper end (or Z (+) side) in the A in Fig. 9 contacts with back shaft 65.When protecgulum 50 (the first gripper shoe 70) further rotates from this state, the tapered end 3B of each rotating shaft 3A starts to be inserted in the correspondence one of the first rotating shaft patchhole 72, the first rotating shaft patchhole 72 than locating hole 93A, 93B closer to pivot axis O-O.By this insertion process, as shown in the A in Fig. 9, the downside (Z (-) side surface) of tapered end 3B contacts the bottom (Z (-) sidepiece) at the edge of the first rotating shaft patchhole 72.Move down (along (Z (-) direction) because back shaft 65 stops the first gripper shoe 70, therefore, when the first gripper shoe 70 is advanced towards closed position, the tapered end 3B of rotating shaft 3A is upwards (mobile along (Z (+) direction).
Then, as shown in the B in Fig. 9, the tapered end 92A of the alignment pin 91A of detent mechanism 90A is inserted in locating hole 93A.When tapered end 92A starts to be inserted in locating hole 93A, the top at the edge of locating hole 93A contacts with tapered end 92A, therefore, along with continuation is inserted, as as shown in the C in Fig. 9, the first gripper shoe 70 upwards (along Z (+) direction) is mobile.In addition, during the positioning action of detent mechanism 90A, the alignment pin 91B of detent mechanism 90B starts to be inserted in locating hole 93B.When the first gripper shoe 70 (protecgulum 50) has moved to the position closing opening 46, complete the location provided by detent mechanism 90A, 90B.
Afterwards, the first gripper shoe 70 (protecgulum 50) is fixed to front baffle 43 by operating by the locking mechanism 95 shown in Figure 10 A and 10B, and is firmly remained in the first corresponding rotating shaft patchhole 72 by each rotating shaft 3A by movable platen 98.Like this, realize the location of each rotating shaft 3A between gripper shoe 70 and 80, therefore each image formation unit 2 is supported for upper demarcation strip 47 spaced apart.
As previously mentioned, on the direction on the surface along the first gripper shoe 70, (when the first gripper shoe 70 is arranged in closed position, in the vertical direction (or Z (-)/Z (+) direction) is elongated to the back shaft patchhole 63 of lid supporting mechanism 60.Therefore, when the first gripper shoe 70 rotates and closes opening 46, the first gripper shoe 70 moves down, make the first gripper shoe 70 be pulled upwardly and by detent mechanism 90A, 90B support after, end 3B is captured in the first rotating shaft patchhole 72.Like this, when the rotating shaft 3A of each photosensitive drums 3 to be inserted in the first corresponding rotating shaft patchhole 72 to support photosensitive drums 3, the end 3B reducing prevention rotating shaft 3A inserts the misalignment risk in the first rotating shaft patchhole 72.
In addition, the detent mechanism 90B in left side is positioned to far away apart from pivot axis O-O than the detent mechanism 90A on right side, therefore, after the location completing right side, carries out the location in left side.The locating hole 93A on right side is (X-direction) elongated hole of extending in the horizontal direction, thus, locating hole 93A is when making the position determining the first gripper shoe 70 in the vertical direction (Z-direction) (X-direction) has certain free degree in horizontal direction, and the locating hole 93B in left side determines the position in horizontal direction (X-direction).
For the location of corresponding rotating shaft 3A, when protecgulum 50 moves to closed position, the end 3B of rotating shaft 3A starts to be inserted in the first corresponding rotating shaft patchhole 72, and the first rotating shaft patchhole 72 is identical apart from the distance of pivot axis O-O.Then, when right detent mechanism 90A starts operation to make the right part of protecgulum 50 move to normal position, left detent mechanism 90B has to start positioning action, and therefore, the left part of protecgulum 50 is positioned to lower than its right part.When protecgulum 50 rotates towards closed position further, left detent mechanism 90B starts operation, so that the left part of protecgulum 50 is pulled upwardly to its normal position.Therefore, by first making protecgulum 50 move to its normal position to pull-up left part after pull-up right part.Thus, by first upwards pull be received in the rightmost side patchhole 72 in rotating shaft 3A, finally upwards pull the rotating shaft 3A be received in the patchhole 72 of the leftmost side, and sequentially to above pulling (location) to be received in rotating shaft 3A in corresponding first rotating shaft patchhole 72.Therefore, upwards pull the rotating shaft 3A be received in the first rotating shaft patchhole 72 in the different time, compared with upwards pulling the situation of rotating shaft 3A, this allows user to close protecgulum 50 by less power simultaneously.
(2. revision for execution mode)
The illustrative embodiments in aforementioned explanation can be revised as described below.
(2-1)
In the lid supporting mechanism 60 of illustrative embodiments, the back shaft patchhole 63 of the first gripper shoe 70 side is arranged to elongated shape, thus during the shutoff operation of this first gripper shoe 70, surface along with the first gripper shoe 70 becomes closer to parallel with gravity direction (Z-direction), and the first gripper shoe 70 is moved down.But the back shaft patchhole be formed in the bracket 61 of front baffle 43 can be elongated, move downward to realize first this of gripper shoe 70.In addition, in the exemplary embodiment, elongated hole is oval shape, but it can be oval.In addition, back shaft patchhole can be rectangle or other elongated shape arbitrarily, as long as the first gripper shoe 70 can around back shaft 65 pivotable and shaft insertion hole allows the first gripper shoe 70 to move relative to the direction of elongate of front baffle 43 along shaft insertion hole.
(2-2)
In the detent mechanism 90 of illustrative embodiments, detent mechanism 90 is formed on front baffle 43 and gives prominence to from it, and forms locating hole 93 in the first gripper shoe 70.But locating hole can be formed in front baffle 43, and alignment pin can be formed in the first gripper shoe 70 outstanding from it.Can use and comprise for relative to the protuberance of front baffle 43 position first support plate 70 and any structure of recess.In addition, illustrative embodiments comprises a pair detent mechanism, and this is spaced apart from each other on pivot axis direction to detent mechanism, but can arrange the detent mechanism of more than three.
The aforementioned description of illustrative embodiments of the present invention is provided to be in order to the object illustrated and illustrate.It is not intended to exhaustive or limit the invention to disclosed precise forms.Obviously, many amendments and modification it will be apparent to those skilled in the art that.Selecting and describing these illustrative embodiments is to explain principle of the present invention and practical application thereof best, thus enables those skilled in the art understand the present invention for each embodiment and make various amendment be suitable for the concrete purposes expected.Scope of the present invention is intended to by claims and equivalents thereof.
Claims (5)
1. an image forming apparatus, this image forming apparatus comprises:
Multiple image holding member, each image holding member keeps image and can rotate around rotating shaft;
Frame parts, this frame parts is defined for the space holding described multiple image holding member at least in part;
Lid, this lid is arranged on described frame parts, with relative to external opening and close described space, the inner side of this lid is formed with rotating shaft patchhole, and each rotating shaft patchhole is all for receiving the end of the rotating shaft of a described image holding member of the correspondence be contained in described space;
Back shaft, this back shaft supports described lid, make described lid can relative to described frame parts pivotable, described back shaft insert be arranged on described frame parts or described in the back shaft that covers insert in the hole, when described lid closes described space, described back shaft patchhole is elongated on the direction with vertical component; And
Detent mechanism, when described lid closes described space, this detent mechanism makes described lid locate relative to described frame parts, this detent mechanism comprises: at least two protuberances, described at least two protuberances are outstanding from described frame parts and described lid, and are spaced apart from each other along the axis direction of described back shaft; And protuberance patchhole, described protuberance patchhole is arranged on another in described frame parts and described lid, to receive corresponding protuberance when described lid closes described space,
Wherein, described detent mechanism is arranged to make the length of the vertical line segment of the axis of the ratio of the length from a protuberance described at least two protuberances to the vertical line segment of the axis of described back shaft from another protuberance described at least two protuberances to described back shaft short.
2. an image forming apparatus, this image forming apparatus comprises:
Multiple image holding member, each image holding member keeps image and can rotate around rotating shaft;
First frame parts;
Second frame parts, this second frame parts is relative with described first frame parts, to be defined for the space holding described multiple image holding member between described first and second frame parts at least in part, the inner side of this second frame parts is formed with the second rotating shaft patchhole, and each described second rotating shaft patchhole is all for receiving the end of the described rotating shaft of a described image holding member of the correspondence be contained in described space;
Lid, this lid is arranged on described first frame parts, with relative to external opening and close described space, the inner side of this lid is formed with the first rotating shaft patchhole, and each described first rotating shaft patchhole is all for receiving the end of the described rotating shaft of a described image holding member of the correspondence be contained in described space;
Back shaft, this back shaft supports described lid, make described lid can relative to described first frame parts pivotable, described back shaft insert be arranged on described first frame parts or described in the back shaft that covers insert in the hole, when described lid closes described space, described back shaft patchhole is elongated on the direction with vertical component; And
Detent mechanism, when described lid closes described space, this detent mechanism makes described lid relative to described first frame parts location, this detent mechanism comprises: at least two protuberances, described at least two protuberances are outstanding from described first frame parts and described lid, and are spaced apart from each other along the axis direction of described back shaft; And protuberance patchhole, described protuberance patchhole is arranged on another in described first frame parts and described lid, to receive corresponding protuberance when described lid closes described space,
Wherein, described detent mechanism is arranged to make the length of the vertical line segment of the axis of the ratio of the length from a protuberance described at least two protuberances to the vertical line segment of the axis of described back shaft from another protuberance described at least two protuberances to described back shaft short.
3. image forming apparatus according to claim 1 and 2, wherein, described back shaft patchhole is avette or elliptical shape.
4. image forming apparatus according to claim 1 and 2, wherein, the described rotating shaft of each image holding member has tapered end, thus the diameter of described rotating shaft is reduced towards end.
5. image forming apparatus according to claim 1 and 2, wherein, each in described at least two protuberances all has tapered end, thus the diameter of described protuberance is reduced towards end.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009-263586 | 2009-11-19 | ||
| JP2009263586A JP5402557B2 (en) | 2009-11-19 | 2009-11-19 | Image forming apparatus |
| JP2009-265443 | 2009-11-20 | ||
| JP2009264634A JP2011107557A (en) | 2009-11-20 | 2009-11-20 | Image forming apparatus |
| JP2009-264634 | 2009-11-20 | ||
| JP2009265443A JP5640354B2 (en) | 2009-11-20 | 2009-11-20 | Image forming apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102073240A CN102073240A (en) | 2011-05-25 |
| CN102073240B true CN102073240B (en) | 2015-04-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010207372.3A Active CN102073240B (en) | 2009-11-19 | 2010-06-18 | Image-forming apparatus |
| CN201010232027.5A Active CN102073260B (en) | 2009-11-19 | 2010-07-16 | Image-forming apparatus |
| CN201010231369.5A Active CN102073259B (en) | 2009-11-19 | 2010-07-16 | Image forming device |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010232027.5A Active CN102073260B (en) | 2009-11-19 | 2010-07-16 | Image-forming apparatus |
| CN201010231369.5A Active CN102073259B (en) | 2009-11-19 | 2010-07-16 | Image forming device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102073240B (en) * | 2009-11-19 | 2015-04-29 | 富士施乐株式会社 | Image-forming apparatus |
| CN114002928B (en) * | 2020-07-28 | 2024-01-09 | 柯尼卡美能达株式会社 | Carbon powder replenishing device and image forming apparatus having the same |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1892467A (en) * | 2005-07-04 | 2007-01-10 | 株式会社理光 | An image forming apparatus, rotating body positioning device and method for positioning the rotating body |
| JP2007199660A (en) * | 2005-12-26 | 2007-08-09 | Fuji Xerox Co Ltd | Image forming apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3320102B2 (en) * | 1992-06-30 | 2002-09-03 | キヤノン株式会社 | Process cartridge and image forming apparatus |
| JP4417942B2 (en) * | 2002-02-19 | 2010-02-17 | 株式会社リコー | Image forming apparatus |
| EP1482385A3 (en) * | 2003-05-20 | 2005-04-06 | Ricoh Company, Ltd. | Image forming apparatus |
| JP4208645B2 (en) * | 2003-06-03 | 2009-01-14 | キヤノン株式会社 | Developer supply container |
| JP2005242333A (en) * | 2004-01-30 | 2005-09-08 | Canon Inc | Image heating apparatus provided with flexible sleeve |
| JP4378299B2 (en) * | 2004-02-20 | 2009-12-02 | キヤノン株式会社 | Process cartridge and electrophotographic image forming apparatus |
| JP4630725B2 (en) * | 2005-05-09 | 2011-02-09 | 京セラミタ株式会社 | Connection device, and image forming apparatus and optional device provided with the same |
| JP2007108496A (en) * | 2005-10-14 | 2007-04-26 | Kyocera Mita Corp | Fixing device |
| JP4724002B2 (en) * | 2006-01-06 | 2011-07-13 | 株式会社リコー | Image forming apparatus |
| CN102073240B (en) * | 2009-11-19 | 2015-04-29 | 富士施乐株式会社 | Image-forming apparatus |
-
2010
- 2010-06-18 CN CN201010207372.3A patent/CN102073240B/en active Active
- 2010-07-16 CN CN201010232027.5A patent/CN102073260B/en active Active
- 2010-07-16 CN CN201010231369.5A patent/CN102073259B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1892467A (en) * | 2005-07-04 | 2007-01-10 | 株式会社理光 | An image forming apparatus, rotating body positioning device and method for positioning the rotating body |
| JP2007199660A (en) * | 2005-12-26 | 2007-08-09 | Fuji Xerox Co Ltd | Image forming apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102073259A (en) | 2011-05-25 |
| CN102073240A (en) | 2011-05-25 |
| CN102073260B (en) | 2014-04-16 |
| CN102073260A (en) | 2011-05-25 |
| CN102073259B (en) | 2014-04-02 |
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Address after: Tokyo, Japan Patentee after: Fuji film business innovation Co.,Ltd. Address before: Tokyo, Japan Patentee before: Fuji Xerox Co.,Ltd. |