CN1184271A - Paper feeder unit - Google Patents

Paper feeder unit Download PDF

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Publication number
CN1184271A
CN1184271A CN97121561A CN97121561A CN1184271A CN 1184271 A CN1184271 A CN 1184271A CN 97121561 A CN97121561 A CN 97121561A CN 97121561 A CN97121561 A CN 97121561A CN 1184271 A CN1184271 A CN 1184271A
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China
Prior art keywords
paper
unit
transport path
row
pawl
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Granted
Application number
CN97121561A
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Chinese (zh)
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CN1132061C (en
Inventor
安井元一
加藤泰久
吉川政昭
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Ricoh Co Ltd
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Ricoh Co Ltd
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Publication of CN1184271A publication Critical patent/CN1184271A/en
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Publication of CN1132061C publication Critical patent/CN1132061C/en
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  • Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
  • Paper Feeding For Electrophotography (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)

Abstract

This paper discharge unit has a first conveying path for discharging paper to a paper discharge tray and a second conveying path for discharging paper to the other paper discharge tray or for conveying to a both-surface unit, a sheet conveyed from a fixing unit in an image forming device is selectively conveyed by the first or second conveying path. Here, this paper discharge unit is formed to be divided into a first unit formed with the first conveying path and a second unit formed with the second conveying path.

Description

Paper feeder unit
The present invention relates to be installed to the paper feeder unit on the image processing system, particularly the copy paper from image processing system is transported to the paper feeder unit on the after-treatment devices such as row paper disc, the double surface unit that the copy paper switching mechanism is housed or mailbox.
In recent years, image processing systems such as duplicating machine, facsimile recorder, printer are popularized, and these image processing systems all are that make on the basis basically with the duplicating machine.
But,, becoming main flow based on the manufacturing of printer recently because the popularizing rapidly of personal computer.Like this, when making image processing system based on printer, basically adopt along the mode that is roughly the vertical direction transport path, compare with existing duplicating machine, copy paper is that the transport path of paper shortens, shortened output time from paper supply to row's paper, the conveying that has improved paper, it is also easier that assembling has the double surface unit of paper turning structure.
For example, as shown in figure 16, in having adopted the image processing system 1 that is roughly vertical direction transport path mode, about center configuration image formation department 3 at apparatus main body 2 height, thereunder dispose sheet feed section 4, paper portion (paper feeder unit) 5 is arranged in configuration above it, and the configuration image is read portion 6 on the upper side of apparatus main body 2.
In this image processing system 1, paper P is supplied with transport path R from the sheet feed stacker 7 of sheet feed section 4 by paper feed roller 8.Deliver to the contraposition roller to 10 by the paper on the paper transportation path R by conveying roller group 9.With utilize image formation department (writing unit) 3, to have formed moment of toner picture on photosensitive drums 11 consistent corresponding to read among portion 6 or the figure pictorial data of target scanner and personal computer not from image, carry to the portion of duplicating 301 from the contraposition roller to 10, toner is looked like to duplicate.Being loaded with also not, the paper P of the toner picture of fixation carries to fixation portion 12.Through carrying to row's paper portion 5 after the fixation.
At this moment, the row's paper portion 5 that constitutes as paper feeder unit is configured to the top of fixation portion 12, it is made up of following structure: the shunt pawl 13 that the throughput direction of paper after the fixation is switched; The the 1st, the 2nd transport path R1, R2 by the 13 shunt extensions of shunt pawl; And each exit roller on these two transport paths is to 14,15.Be installed with on the afterbody of the 1 2nd transport path R1, R2 the surface portion 16 that becomes the row of the usefulness that faces down paper disc and towards on row's paper disc 17.As among the figure with shown in the double dot dash line, can also replace in the double surface unit 18 that the paper turning structure is equipped with in second that side of transport path R2 as required towards on row's paper disc 17, and double surface unit 18 is being that the center is installed on the apparatus main body 2 rotatably with fulcrum pin a.
When the image processing system 1 that comprises such row's paper portion 5 adopts the single-side machine form, make paper P by the 1st transport path R1, picture plane down is transported on the surface portion 16, can the row's of facing down paper; When making pawl 13 switchings along separate routes, make paper P by the 2nd transport path R2, picture plane up is delivered to towards the last row's of using paper disc 17, can carry out towards last row's paper.When handle removes with row's paper disc 17 towards last, and replace double surface unit 18 is installed, when image processing system 1 is adopted as two-sided machine form, make paper P, it is entered surface portion 16 through transport path R1, the 2nd transport path R2 and double surface unit 18, after finishing double-sided copying.
Like this, image processing system 1 shown in Figure 16 is compared with duplicating machine in the past, and transport path R, R1, R2 are shorter, and, only decontrol by a side that makes device, the major part of paper transportation path is come out.Like this, can shorten output time from paper supply to row's paper, the conveying that can improve paper simultaneously, the paperboard removing property might as well.
But, though above-mentioned row's paper portion 5 have can be on single-side machine, two-sided machine shared function, because of desired function difference in the various image processing systems, that is to say because single-side machine and two-sided machine is different, make it comprise some unnecessary parts.
That is, when image processing system 1 adopted the single-side machine form of the row's of facing down paper, 5 needs the 1st transport path R1 of row's paper portion and exit roller in this device did not need 15 14, the 2 transport path R2 and exit roller.
Like this, when row's paper portion 5 of image processing system 1 comprises when being used to realize the required part of single-side machine and these two kinds of functions of two-sided machine substantially, some unwanted parts are also just installed, and this has also produced on the cost or getting rid of problem in the waste of space.
So, the purpose of this invention is to provide the low cost that can seek to be installed in the paper feeder unit in the image processing system, the paper feeder unit that can get rid of the space waste.
The paper feeder unit of the present invention the 1st aspect comprises: the 1st transport path is used for copy paper to row's paper disc row paper; With the 2nd transport path, be used for copy paper to other row's paper disc row paper or be used for copy paper is carried to double surface unit; In this paper feeder unit, the copy paper that the fixation unit in image processing system transports out is carried by above-mentioned the 1st transport path or the 2nd transport path selectively; It is characterized in that this paper feeder unit is partitioned into Unit the 1st that forms above-mentioned the 1st transport path and the Unit the 2nd that forms above-mentioned the 2nd transport path.
Like this, formation face down row paper single-side machine the time, only use Unit the 1st just can constitute paper feeder unit, except this row of facing down paper, can also carry out arranging paper or during to the two-sided machine of double surface unit conveying, paper feeder unit can be by getting up to constitute to Unit the 1st and the 2nd unit combination constituting to other row's paper discs such as mailboxes.
The present invention the 2nd aspect is characterised in that, in the described paper feeder unit, above-mentioned Unit the 1st comprises aspect the present invention the 1st: the 1st exit roller, form the 1st guide plate of the 1st transport path and lead selectively shunt pawl on the 1st or the 2nd transport path of copy paper; Unit the 2nd comprises: conveying roller, the drive unit that drives the 2nd exit roller or conveying roller that copy paper is carried to the 2nd exit roller or double surface unit, form the 2nd guide plate of the 2nd transport path and make the operating means of pawl operation along separate routes, this shunt pawl should lead copy paper on the 1st or the 2nd transport path selectively.
Like this, in Unit the 1st, when from the image processing system main body by drive transmission device when exit roller applies driving force, exit roller promptly is driven, the 1st guide plate leads to the paper that arrives the 1st transport path by the shunt pawl along separate routes, makes the 1st exit roller carry out prone row's paper operation; On the other hand, in Unit the 2nd, apply driving force by drive transmission device to the 2nd exit roller from Unit the 1st, the 2nd exit roller promptly is driven, the 2nd guide plate leads by the paper that the shunt pawl that has carried out blocked operation in operating means arrives the 2nd transport path along separate routes, and the 2nd exit roller is carried out towards last row's paper operation.
The present invention the 3rd aspect is characterised in that: aspect the present invention the 1st in the described paper feeder unit, above-mentioned the 1st cell location on the main body of image processing system, the 2nd cell location on Unit the 1st.
Like this, when image processing system is installed paper feeder unit, when image processing system is single-side machine, only the main body location and installation of Unit the 1st to image processing system; When it is two-sided machine, on the basis of Unit the 1st having been decided the position to the image processing system main body, Unit the 2nd is installed the 1st cell location.
The present invention the 4th aspect is characterised in that in the described paper feeder unit, the cover plate that opens wide when paperboard is handled is installed on the side of image processing system aspect the present invention the 1st, by above-mentioned cover plate is opened wide, can load and unload above-mentioned Unit the 2nd.
Like this, when image processing system is installed paper feeder unit, when image processing system is two-sided machine, on the basis that cover plate is opened wide, Unit the 2nd is installed in side by side the side of Unit the 1st.
The present invention the 5th aspect is characterised in that: aspect the present invention the 1st in the described paper feeder unit, above-mentioned the 2nd transport path is made of 4th transport path of copy paper to above-mentioned other row's paper discs row paper with being used for the 3rd transport path that is used for copy paper is carried to double surface unit, above-mentioned Unit the 1st comprises copy paper is shunted to along separate routes pawl of the 1st on the above-mentioned the 1st or the 2nd transport path that above-mentioned Unit the 2nd comprises: make the 1st the 1st operating means of pawl operation along separate routes, copy paper is shunted to the pawl along separate routes of the 2nd on the 3rd or the 4th transport path, and the 2nd operating means that makes the 2nd shunt pawl operation.
The present invention the 6th aspect is characterised in that: in the described paper feeder unit, above-mentioned the 2nd operating means is a solenoid coil aspect the present invention the 5th, and when setting this solenoid coil OFF, the above-mentioned the 2nd along separate routes pawl copy paper is directed to the 3rd transport path.
The present invention the 7th aspect is characterised in that: aspect the present invention the 6th in the described paper feeder unit, above-mentioned the 1st operating means is solenoid coil (a ソ レ ノ ト Star), and this solenoid coil is arranged on as the solenoid coil of the 2nd operating means apart from the cooling device in the image processing system more nearby.
Fig. 1 is the summary pie graph of having installed as the image processing system of the paper feeder unit of one embodiment of the invention;
Fig. 2 is Fig. 1 paper feeder unit and the amplification pie graph of the major part of member on every side thereof;
Fig. 3 is the shunt pawl in Fig. 1 image processing system and the key diagram of 1 2nd transport paths;
Fig. 4 is the function declaration figure of Unit the 1st of pie graph 1 paper feeder unit;
Fig. 5 is the function declaration figure of Unit the 2nd of pie graph 1 paper feeder unit;
Fig. 6 reaches the decomposition inclined shaft side throwing image pattern of member on every side for Fig. 1 paper feeder unit;
Fig. 7 is the figure of form that briefly shows the image processing system of Fig. 1, (a) only shows the single-side machine of the row's of facing down paper, (b) shows to face down and towards the single-side machine of last row's paper, (c) show two-sided machine;
Fig. 8 is installed in the side cover plate on the image processing system of Fig. 1 and the function declaration figure of Unit the 2nd;
Fig. 9 is the skeleton diagram that is installed in the rotary drive system in Fig. 1 paper feeder unit;
Figure 10 is that the interior shunt pawl of the 1st paper feeder unit of pie graph 1 paper feeder unit drives the side enlarged drawing with driver;
Figure 11 is the skeleton diagram that the two-sided machine corresponding states of another embodiment is shown;
Figure 12 is that the decomposition inclined shaft side of example shown in Figure 11 is thrown image pattern;
Figure 13 is the skeleton diagram of the single-side machine corresponding states of example shown in Figure 11;
Figure 14 is the user mode skeleton diagram that the 4th transport path of example shown in Figure 11 is shown;
During Figure 15 constitutes for the single face of example shown in Figure 11 is corresponding, remove the skeleton diagram of the state behind the unnecessary member;
Figure 16 is the skeleton diagram that the image processing system of existing paper feeder unit has been installed.
Below, describe having used paper feeder unit of the present invention referring to figs. 1 through Figure 10.
The paper feeder unit 20 of Fig. 1 is installed in image processing system 21 inside.This image processing system 21 is included in the image formation department 24 that includes photoreceptor 23 in the apparatus main body 22, is the center with this image formation department, and sheet feed section 25 is set to the below, is fixation portion 26 and row's paper portion that paper feeder unit 20 is set to the top.And, visual reading part 27 (following is called scanister) is installed on the top of paper feeder unit 20, on the side of apparatus main body 22, dispose double surface unit 80, possessed the function of two-sided machine.In addition, apparatus main body 22 is positioned the side of paper feeder unit 20, and configuration is as the surface portion 28 that faces down with row's paper disc under scanister 27.
As shown in Figure 1, image formation department 24 comprises: as the photoreceptor 23 of image carrier, on photoreceptor 23, form the optical writing device 31 of electrostatic latent image, make the charged device 32 of photoreceptor 23 uniform chargeds, make the visual display 33 of electrostatic latent image, the visual image that forms by display 33 is copied to the reproducing unit 34 that paper P went up and carried this paper P, the fixation portion 26 that the toner that duplicates by reproducing unit 34 is looked like to carry out fixation, remove and duplicate residual toner on the photoreceptor 23 of back, the cleaning unit 36 of cleaning photoreceptor 23, what the residual charge of back on the photoreceptor 23 duplicated in cancellation removes electrical equipment 35.Label 40 expressions are used for storing the toner bottle of the toner of supplying with display 33.
Optical writing device 31 is the unit that converts light signal to from the pictorial data of scanister 27, carries out writing with the corresponding light of original image and carry out and write from the corresponding light of the picture information of computing machine, its structure is known, promptly, laser beam is scanned by the polygon prism of rotation, this scan light is led on the photoreceptor 23 by f θ lens, formed electrostatic latent image.Cleaning unit 36 comprises: the scraper plate 43 that contacts with photoreceptor 23 and be configured in the cleaning brush 44 of the sense of rotation downstream side of the photoreceptor 23 on this scraper plate.
The dubs 45 of configuration replication device 34 makes it to contact with photoreceptor 23, and this dubs 45 supports between driven roller 46 and driven voller 47 and opens, and resistance is medium resistance, is to be made by the little elastomeric material of resistance change.Used the coating film of low-friction coefficient on the surface of dubs 45.
The bias voltage roller 48 that applies bias voltage is contacted configuration with the medial surface of dubs 45.Bias voltage roller 48 is metal, and it is driven in the rotation of dubs 45 and rotates, and links to each other with the high-voltage power supply that does not mark among the figure, apply bias-voltage.
Have in the fixation portion 26 the fixation roller to 51,52, the disengaging pawl 53 of the clearer 54 that links to each other with fixation roller 52 and the configuration that contacts with fixation roller 51.
There are several to hold the paper feeding cassette 49 of different size paper P respectively in the sheet feed section 25, utilize paper feed roller 50 to supply with paper P from a certain paper feeding cassette wherein, utilize separate roller the paper P that gives to be separated one by one, utilize conveying roller 56 that it is passed out on the transport path R 55.Reproducing unit 34 the place aheads configuration contraposition roller is to 57 on transport path R, and it passed out to paper P between reproducing unit 34 and the photoreceptor 23 in given moment.
Row paper portion is that paper feeder unit 20 comprises: the 1st transport path R1 when surface portion 28 row's paper, to double surface unit 80 or the 2nd transport path R2 when row's paper disc of last usefulness is carried, utilize shunt pawl 30 to carry the fixation portion in image processing system 26 the paper P that comes to be transported on the 1st transport path R1 or the 2nd transport path R2 along separate routes selectively, therefore, cut apart the 2nd unit U2 that formation has the 1st unit U1 of the 1st transport path RI and has the 2nd transport path R2 here.
As Fig. 4 and shown in Figure 6, the 1st unit U1 has: the casing 101 of long case shape, be configured in box house, as the paper of the row up and down guide plate 59,60 of the 1st guide plate, the exit roller that paper P is sent to surface portion 28 is to 62, paper P is shunted to shunt pawl 30 on the 1st, the 2nd transport path selectively, and back the 1st drive transmission device D1 and the idle pulley 130 that will talk about.
Stretch out brace 102 respectively from the front and back end sidewall of casing 101, the last brace 102 of front and back is fixed on by screw on the upper flange f1 of front and back base station 221,222 of apparatus main body 22.In addition, respectively stretch out a downside pin 103 before and after from the diapire of casing 101, this fixes casing 101 through hole 224 on the central shelf 223 of downside pin through-going device main body 22, prevents from simultaneously to become flexible.Horizontal sidepiece has formed opening 105,106 about casing 101, opening 105 respectively disposes a spacer 104 on its front and back end, the part of shunt pawl 30 is embedded in the gamut of this opening 105 under reaching outside state, the end of aftermentioned the 2nd unit U2 contacts with left and right sides spacer 104, simultaneously, form the pilot hole 107 that cooperates with the register pin 124 of the 2nd unit U2.In addition, form opening 106, make its size can allow the 62 paper P that are transported to surface portion 28 to be passed through from exit roller as the 1st exit roller.
As shown in Figure 5 and Figure 6, Unit the 2nd has: the casing 120 of long case shape, be configured in box house, as the paper of the row up and down guide plate 109,108 of the 2nd guide plate, the two-sided conveying relaying roller that paper P is sent to double surface unit 80 is to 119 and back the 2nd drive transmission device D2 that will talk about.
Stretch out horizontal brace 117 respectively from the front and back end sidewall of casing 120, the horizontal brace 117 of front and back is fixed on by screw on the horizontal flange f2 of front and back base station 221,222 of apparatus main body 22.In addition, on horizontal sidepiece about casing 120, form opening 121,122, the spacer that does not mark in the diagram has respectively been arranged on the end, front and back of opening 121, from this spacer, stretched out register pin 124 respectively.This register pin 124 carries out location between the two by in the pilot hole 107 (with reference to Fig. 6) that is coupled to the 1st unit U1 one side.Like this, when being assembled to the 1st unit U2 on the 2nd unit U1, can locate mutually reliably, therefore, the relative position precision (with reference to Fig. 3, Fig. 5) of following row's cardboard 108 of the shunt pawl 30 of U1 side, Unit the 1st and U2 side, Unit the 2nd can be guaranteed, the 2nd transport path R2 can be formed accurately.
In addition, the front end of following row's cardboard 108 stretches out from opening 121 (with reference to Fig. 5), forms this fore-end, makes it can be embedded in the opening 105 of the 1st unit U1.In addition, guarantee the shape of opening 122, can pass through the 119 paper P that send to double surface unit 80 or row's paper disc 137 so that make as the two-sided conveying relaying roller of the 2nd feed rollers.
Like this, the 2nd unit U2 cooperates with the pilot hole 107 of the 1st unit U1 by register pin 124, simultaneously, on the horizontal flange f2 of base station 221,222, can carry out location and installation to the 1st unit U1 at an easy rate before and after horizontal brace 117 is fixed on by screw.And, as Fig. 2 and shown in Figure 8, when taking off double surface unit 80 and inner cap 123, can carry out the loading and unloading of the 2nd unit U2 at an easy rate.
Shunt pawl 30 in the 1st unit U1 is made horizontal direction long triangular prism shaped substantially (with reference to Fig. 6), shunt pawl 30 portion in the central has the rotation axis 30a that becomes one with it, and the left and right end axle of this rotation axis 30a is supported on the front and back ends sidewall of casing 101.Here, as shown in figure 10, barre 108 is installed to this side of front of rotation axis 30a integratedly.The upper end of this bar applies elastic force by the spring 109 that is connected on the fixed pin 110 along the counter-clockwise direction traction, and the lower end of this bar can touch on the FS driving stem 111 of the 2nd unit U2.
As shown in figure 10, the 2nd unit U2 the operating means that makes along separate routes pawl 30 operations be solenoid coil 114, and lever pin 112 support respectively on the inwall of casing 120 (not shown).Lever pin 112 is supported the central portion axle of driving stem 111.On the upper end of this driving stem 111, form slotted hole 113, the movable core 115 FS pin 115a intercalations of solenoid coil 114 are arrived in this slotted hole.The lower end of driving stem 111 is configured to make it can contact on the bar 108 of mutual the 1st unit U1 when the 1st unit U1 is connected with the 2nd unit U2.
Therefore, when solenoid coil 114 was in non-excited state, movable core 115 remained under the state that stretches out, the downside of the driving stem 111 that is connected thereto rotates end and retreats from bar 108, shown in solid line, along separate routes pawl 30 is added elastic force by spring 109 along counter-clockwise direction, remains on the 1st position.At this moment, shown in Fig. 3 solid line,, form the upper reaches portion of the 1st transport path R1 with following row's paper guide plate 60 co-operation.Moreover, form the dirty portion of the 1st transport path R1 by upper and lower row's paper guide plate 59,60.
On the other hand, when making solenoid coil 114 excitations, the upside of movable core 115 traction drive bars 111 rotates bar 108 along clockwise direction, and shown in double dot dash line, pawl 30 remains the 2nd position along separate routes.At this moment, shown in Fig. 3 double dot dash line, along separate routes pawl 30 and the following paper of row down guide plate 108 co-operation form the upper reaches portion of the 2nd transport path R2.Moreover, form the dirty portion of the 2nd transport path R2 by upper and lower row's paper guide plate 109,108.
As Fig. 4, shown in Figure 9, the exit roller of the 1st unit U1 to 62 from image processing system 21 the main body driven wheel 126 of the drive source interlock that do not mark of diagram accept revolving force, this position has constituted the 1st drive transmission device D1.Here, 126 of main body driven wheels are supported on the 1st unit U1 one side, and be meshed with driven wheel 622, driven wheel 622 and exit roller are one to 62 driven roller (Fig. 4 upside), make exit roller to 62 rotations by this driven wheel 622 and axle 621.In addition, 130 of the idle pulleys that is meshed with driven wheel 622 support on casing 101 rear ends of the 1st unit U1 that it has the function of conduct to the drive transmission device of the 2nd unit U2 drive transmitting.
On the other hand, as shown in Figure 9, the two-sided conveying relaying roller of the 2nd unit U2 is driven by the 2nd drive transmission device D2 119.Promptly as Fig. 5, shown in Figure 9, two-sided conveying relaying roller is combined into one to the end and the driven wheel 128 of the axle 127 of 119 driven roller (Fig. 5 upside).And, the two tanks 101 that connects the 1st unit U1 and the 2nd unit U2 and 102 o'clock, tooth bar, promptly regularly tooth bar 129 was routed between the pinion wheel on the idle pulley 130 of the driven wheel 128 of the 2nd unit U2 and the 1st unit U1 side, this position constitutes the 2nd drive transmission device D2
Utilize the 2nd such drive transmission device D2, when the driven wheel 622 of driving force by the 1st unit U1 is delivered on the gear wheel of idle pulley 130, pinion wheel, timing tooth bar 129, driven wheel 128 and axle 127 by idle pulley 130 make two-sided conveying relaying roller to 119 rotations, in suitable moment, the paper P after the simplex copying is delivered on the double surface unit 80.
As shown in Figure 1 and Figure 2, be used for opening wide paper P transport path R, carry out side cover plate 123 that paperboard handles with pivot pin 38 be the center freely openable be arranged on the side of image formation department 24.This side cover plate 123 is supported reproducing unit 34 and delivery guide 39.
Break away under the state of side cover plate 123 in double surface unit 80 described later, side cover plate 123 from Fig. 2 with the position transfer shown in the double dot dash line to the position shown in the solid line time, the transport path R of paper P is opened wide, and, the 1st, the 2nd transport path R1, the R2 of the paper P afterwards of fixation portion 26 are also opened wide.
Double surface unit 80 is configured to the outside of side cover plate 123, can rotate and freely load and unload around 131 pairs of apparatus main bodies of bearing pin.Double surface unit 80 comprises: accept to utilize the switchback 135 of two-sided conveying relaying roller to the 119 paper P that send, make the twist rollers 132 of the paper P upset on this switchback, and the paper P after will overturn through double-surface path 133 to the contraposition roller to 57 conveyings many to conveying roller to 134.
Scanister 27 is loaded on the support 136, consist of the following components: place the contact glass plate 137 that original copy is used, illumination is mapped to be placed on the illuminating lamp 138 on the original copy on this contact glass plate, make the scanning mirror 139 of turning back and reflecting from the reflected light on original copy surface, turn back mirror to 140 with the light path that a half speed of this scanning mirror 139 moves, and image forms lens 141 and the photo-electric conversion element row are CCD142.
Below, based on above-mentioned formation, its operation is described.
At first, in the single face row paper mode that faces down, solenoid coil 114 keeps non-excited state, and pawl 30 remains among Fig. 3 with the position shown in the solid line along separate routes, forms the 1st transport path R1 with row's paper guide plate 60 co-operation down.
When entering simplex copying, utilizing charged device 32 to make on the surface of photoreceptor 23 of surperficial uniform charged, according to the original image that reads by scanister 27 or from the picture information of personal computer, utilize optical writing device 31 to carry out light and write, form electrostatic latent image.Utilize not shown consumer appliance photoreceptor 23 on after the electric charge cancellation of non-image area in the electrostatic latent image, in display 33, toner is attached on the electrostatic latent image by developing roll 33a, form visual image.
On the other hand, utilize paper feed roller 50 paper P to be sent, utilize separate roller 55 that paper is separated one by one, utilize conveying roller 56 that it is passed out on the transport path R, transport to the contraposition roller 57 from a sheet feed stacker 49 of sheet feed section 25.The contraposition roller is sent paper P 57 making visual image on the photoreceptor 23 and paper P keep clamping corresponding to moment with photoreceptor 23 and dubs 45 to reproducing unit 34.
The moment that enters clamping with paper P is consistent, with high tension voltage given voltage is applied on the bias voltage roller 48, makes dubs 45 charged, and the toner on the photoreceptor 23 is copied on the paper P.Here, paper P since by Electrostatic Absorption to dubs 45 and separate with photoreceptor 23, ride over and be transferred away on the dubs 45, on the position of driven roller 46, separate with dubs 45, be sent to fixation portion 26.Paper P is inserted between the fixation roller 51 and fixation roller 52 that is heated to fixed temperature, after being heated fixation, with its guiding disengaging pawl 53 and delivery guide 39, and then, make paper P by the 1st transport path R1 between shunt pawl 30 and the upper and lower row's paper guide plate 59,60, utilize exit roller to be discharged on facial 28 to face down 62.
In addition, when transport path R, R1, the last generation of R2 paper jam phenomenon, double surface unit 80 around pin 131 rotations, is remained to Fig. 2 with the position shown in the solid line, then, side cover plate 123 around pin 38 rotations, is moved to Fig. 2 with the position shown in the solid line.In addition, the cover plate 41 that covers the top of the 1st, the 2nd unit U1, U1 is rotated around not shown pivot, open wide the top of double surface unit.Delivery guide 39 is mounted on the side cover plate 123, can move together when open side cover plate 123 thereupon.
Like this, open wide the transport path R of paper P and fixation portion 26 later transport path R1, R2, the processing space of guaranteeing paperboard is from removing the paper P that blocks here.
In the double-sided replication mode, solenoid coil 114 is by excitation, and pawl 30 remains on Fig. 3 with on the 2nd position shown in the double dot dash line along separate routes, with row's paper guide plate 108 co-operation formation down, the 2nd transport path R2.
When entering double-sided copying, the same with above-mentioned single-sided copying, being transported on the 1st unit U1 from fixation portion 26 at the paper P that has formed the toner picture on the single face.
At this moment, along shunt pawl 30 and the 2nd transport path R2 conveying between row's paper guide plate 108 down, utilize paper P two-sided conveying relaying roller to be transported on the switchback 135 of double surface unit 80 to 119.And then, utilize twist rollers 132, under rollover states, this paper P is transferred on the two-sided path 133 from switchback 135, arrive contraposition roller 57 and single-sided copying and similarly on another side, duplicate.At this moment, remove the excitation of solenoid coil 114, form the 1st transport path R1, the paper P that has finished double-sided copying enters exit roller to 62 from fixation portion 26 with the 1st transport path R1, is discharged to surface portion 28.
As shown in Figure 1, this image processing system 21 has with prone single face row's paper with the paper feeder unit of paper P to double surface unit 80 conveyings, like this, just can carry out single-sided copying and double-sided copying selectively.
Relative with it, Fig. 7 (a) is shown schematically in such image processing system 21a and paper feeder unit is become only carry out with the 1st unit U1 of prone single face row paper and double surface unit 80 is not installed, in addition, adopt the structure same with the image processing system 21 of Fig. 1.
The grown form of the image processing system 21 of this image processing system 21a pie graph 1 adopts the single-side machine form of arranging paper to surface portion 28 in prone mode.Owing to only, do not comprise the 2nd unit U2 with the 1st unit U1 formation the paper feeder unit here, so, can seek the simplification and the cost degradation of device, can get rid of invalidly and take up room.
And then Fig. 7 (b) is shown schematically in such image processing system: the double surface unit 80 of removing Fig. 1 image processing system 21, replace installed surface upwards with row's paper disc 13, in addition, the image processing system 21 of employing and Fig. 1 is with the image processing system 21b of spline structure.
This image processing system 21b can reach two-sided row's paper mode, here, before duplicating index plane downwards or towards on arrange paper, based on this indication, pawl 30 is switched remains on Fig. 3 with the 1st position shown in the solid line or with on the 2nd position shown in the double dot dash line.Like this, similarly only carried out behind the single-sided copying at image processing system 21 with Fig. 1, can make with prone row's paper and be discharged to surface portion 28 by the 1st transport path R1, perhaps, make with towards last row's paper by the 2nd transport path R2, by the FU exit roller to 119 ', (in image processing system 21b, the right designate of above-mentioned two-sided conveying relaying roller) is discharged to towards last with in row's paper disc 13.
Like this, each image processing system 21a, the 21b shown in Fig. 7 (a)~(c), 21 mutual its forms of replacement are easily.Particularly, because paper feeder unit 20 is separated into the 1st paper feeder unit U1 and the 2nd paper feeder unit U2, so, when constituting image processing system 21a with single-side machine as the row's of the facing down paper that only uses the 1st paper feeder unit U1, the unwanted second paper feeder unit U2 is not installed, can seek to reduce cost, can get rid of the waste in space.
Otherwise, the image processing system 21, the 21b that need the 1st paper feeder unit U1 and the 2nd paper feeder unit U2 when conduct, when promptly constituting towards the single-side machine of last and prone two-sided row's paper or two-sided machine, it is rotated back open side cover plate 123 around pin 38, as shown in Figure 8, just can carry out the loading and unloading operation of the 2nd paper feeder unit U2 at an easy rate from the open ports of apparatus main body 22.And, at this moment, the register pin 124 of the 2nd paper feeder unit U2 is embedded in the pilot hole 107 of the 1st paper feeder unit U1, can locate mutually at an easy rate, can install the 2nd unit U2, guarantee not take place to misplace.In addition, as Fig. 2, shown in Figure 8, the side cover plate 123 of apparatus main body 22 can load and unload respectively on the auto levelizer main body 22 by pivot pin 131 by pivot pin 38, double surface unit 80, and the alter operation of form itself also can carry out at an easy rate mutually.
Below, another embodiment of the present invention is described to Figure 15 with reference to Figure 11.Part same as the previously described embodiments is represented with same-sign.In addition, same as the previously described embodiments with the relation of whole image processing system, therefore, omit its explanation.
Paper feeder unit 300 in the present embodiment as shown in figure 11, be made of the 1st unit U1 with the 1st transport path R1 and the 2nd unit U2 with the 2nd transport path R2, the 2nd transport path R2 is by being used for to the 3rd transport path R3 of double surface unit conveyance of sheets P and being used for constituting to the 4th transport path R4 of the row's of locating paper such as mailbox.
If illustrate in greater detail, as shown in figure 12, the 1st unit U1 is by constituting with the lower part summary: be fixed on row's paper guide plate 301 on the apparatus main body, at the grate paper-arranaging sensor support substrate 302 of this positioning and fixing above row's paper guide plate 301 and freely to rotate on the row's of being supported in paper guide plate 301, paper P shunted to the 1st pawl 303 along separate routes of the 1st transport path R1 or the 2nd transport path R2.
On the other hand, the 2nd unit U2 is by constituting with the lower part summary: free, the main loading and unloading unit 304 corresponding to two-sided mode of loading and unloading on row's paper guide plate 301; Be fixed on the cover plate of side, single face, the shared delivery guide 305 of double-sided copying.
Row's paper guide plate 301 is shaped the part one (integral body) that is equivalent to upper and lower row's paper guide plate by die forming, at its two ends stator 306 is arranged, and is used to be fixed in apparatus main body.On stator 306, form protruding 306a, be used for grate paper-arranaging sensor support substrate 302 location.In addition, on row's paper guide plate 301, has exit roller 307,308, fixing on the end (inboard) of the turning axle 309 of exit roller 307 up from the input gear 310 of the power source (not shown) input power of apparatus main body, on grate paper-arranaging sensor support substrate 302, be useful on and detect the grate paper-arranaging sensor 311 that paper P passes through.
The 1st along separate routes pawl 303 form the have living space triangle column of rib structure of portion of inside, at a 303a who forms on the two ends on the row of the being supported in paper guide plate 301.The operating sheet 312 that is used to make the 1st shunt pawl 303 to rotate is fixed on inboard axle 303a, between the side plate of the upper end of operating sheet 312 and row's paper guide plate 301, be connected with spring 313, it makes the 1st shunt pawl 303 return to same position, promptly on the position of the 1st transport path R1 guiding.Operating sheet 312 freely is supported on the side plate by axis hole 312a rotation.
Form on the loading and unloading unit 304 be arranged on apparatus main body above mailbox etc. corresponding above ejection port 114, the 2nd shunt pawl 315 that freely rotates is housed below it, and this shunt pawl 315 shunts to paper P on the 3rd transport path R3 or the 4th transport path R4.Along separate routes fixing linking arm 316 on the rotation axis 315a of pawl 315 these sides of front the 2nd, this linking arm 316 can be rotationally coupled on the side plate that is fixed on loading and unloading unit 304 these sides of front, on the movable core 318 as the solenoid coil 317 of the 2nd operating means.Between the lower end of linking arm 316 and side plate, be connected with spring 319, it make the 2nd along separate routes pawl 315 return to same position promptly on the position of the 4th transport path R4 guiding.
On the inboard side plate of loading and unloading unit 304, solenoid coil 320 as the 1st operating means that makes 303 operations of the 1st shunt pawl is housed, can connect pressing tablet 322 rotationally on the movable core of this solenoid coil 320, this pressing tablet 322 is pushed the bottom that is fixed on the operating sheet 312 on the 1st shunt pawl 303.Pressing tablet 322 is supported on the side plate freely to rotate by integrally formed axle 322a.Here, so-called " inboard ", what say is near as the fan that is arranged on the cooling device on the apparatus main body and be vulnerable to a side of this cooling effect.
On the dorsal part (outlet side of the 3rd transport path R3) of loading and unloading unit 304, supporting to become one relaying roller 323 of the relaying roller centering of carrying freely to rotate to double surface unit, on the medial end of its live-rollers 324, fixing driven wheel 325 as the relaying roll driving apparatus.This driven wheel 325 is rotatably on the side plate of the row's of being supported in paper guide plate 301 inboards, is connected with relay gear 326 on being engaged to input gear 310 by chain belt 327, and driven wheel 325 is accompanied by the rotation of importing gear 310 and rotates.
On the both sides of loading and unloading 304 fronts, unit, form the protruding 304a of row's paper guide plate 301 location usefulness and the screw 304b that screw retention is used.By hole 302a that forms on that side of the back side to grate paper-arranaging sensor support substrate 302 and the hole 304b that on that side of loading and unloading 304 fronts, unit, forms, can realize being threaded between two members.
The stator 305 that is used for fixing on side cover plate 328 (Figure 11) forms on the two ends of delivery guide 305, forms a plurality of two kinds of guiding ribs 329,330 in axial direction, at certain intervals in the outside of delivery guide 305.In addition, on delivery guide 305, form recess 331, accommodating another the driven relaying roller 332 that becomes relaying roller centering with can rotating and freely load and unload.Fixing the support plate 333,334 of the turning axle 335 of supporting relaying roller 332 on the both ends of depressed part 331 respectively, by spring 336 of accommodating between support plate 333 and 334 and the bearing of supporting by a support plate 334 337, the state on the relaying roller 323 that is crimped onto loading and unloading 304 sides, unit is supported.
Secondly, come description operation according to above-mentioned formation.
As shown in figure 11, under the situation of double-sided copying, drive the 1st along separate routes pawl 303 solenoid coil 320 and drive the 2nd along separate routes the solenoid coil 317 of pawl 315 connect (ON) simultaneously.When solenoid coil 320 is connected, by pressing tablet 322 pressing operation sheets 312, accompany with it, make the 1st along separate routes the position of pawl 303 from the stationkeeping of the 1st transport path R1 that leads to the position of guiding the 2nd transport path R2.Also have, when solenoid coil 317 was connected, linking arm 316 rotated, along with, make the 2nd along separate routes the position of pawl 315 from the stationkeeping of the 4th transport path R4 that leads to the position of the 3rd transport path R3 that leads.Like this, form the 3rd transport path R3, the paper P that comes out from fixing device 26 is sent to double surface unit to double surface unit.
As shown in figure 11, on side cover plate 328, form receiving port 328a, accept the paper of discharging to the transport path of apparatus main body from double surface unit.Also have, utilize leaf spring 338, the exit roller 308 of below is crimped onto on the exit roller 307 of top.
As shown in figure 13, corresponding to the turning operation of paper P in double surface unit, solenoid coil 320 and solenoid coil 317 are disconnected (OFF).When solenoid coil 320 is disconnected, add under the elastic force at spring 313, the 1st shunt pawl 303 is returned on the fixed position (position of the 1st transport path R1 that leads).Like this, form the 1st transport path R1, the paper P of the double-sided copying of coming out from fixing device 26 is discharged to as on the last face of lower wall.
Also have, when solenoid coil 317 is disconnected, add under the elastic force, the 2nd shunt pawl 315 is returned on the position of guiding the 4th transport path R4 at spring 319.This is owing to consider: with not opposite to the continuous paper supply of double surface unit, big to the possibility of the continuous paper supply of row's paper of outlet etc.Like this, solenoid coil 317 is connected continuously, can be suppressed heating and power consumption.Also have, can adopt small-sized, cheap element, also help the miniaturization of paper feeder unit as solenoid coil 317.
Also have, compare, the high solenoid coil 320 of frequency of utilization is arranged in the apparatus main body near the blowing fan with solenoid coil 317, therefore, can suppress the heating and the power consumption of solenoid coil 320 effectively,, also can help the miniaturization of paper feeder unit from this viewpoint.
As shown in figure 14, under the situation of discharges such as mailbox, only solenoid coil 320 is connected, the stationkeeping that makes the 1st shunt pawl 303 is on the position of the 2nd transport path R2 guiding.The 2nd along separate routes pawl 315 be in a fixed position promptly on the position of the 4th transport path R4 guiding, therefore, the paper P that comes out from fixing device 26 is sent to mailbox etc.
Under situation about using, as shown in figure 15,, promptly load and unload unit 304, relaying roller 332 removes a member that in two-sided mode, uses as single face mode machine.
As mentioned above, relevant the 1st aspect of the present invention, can form selectively the paper feeder unit that only uses Unit the 1st and Unit the 1st and the 2nd unit combination paper feeder unit.
Like this, can use Unit the 1st separately or be used in combination Unit the 1st and Unit the 2nd, therefore, can constitute the paper feeder unit that two-sided machine is used at an easy rate, can constitute the plane machine of independent use Unit the 1st, at this moment, Unit the 2nd can be got rid of, the waste aspect guaranteeing in cost or space can be got rid of.
Relevant the 2nd aspect of the present invention, aspect the present invention the 1st in the described image processing system, can keep the shunt pawl of Unit the 1st integratedly with guaranteeing the 1st transport path, and the operating means that can utilize Unit the 2nd switches the shunt pawl of Unit the 1st, can utilize this shunt nail-press to change the 1st and the 2nd transport path.
Like this, Unit the 1st can carry out prone row's paper operation individually; If on the 2nd unit combination to the Unit 1, utilize the switching of pawl along separate routes, just can carry out prone row's paper operation selectively and reach towards last row's paper operation; Can be the form of single-side machine or two-sided machine according to image processing system, make independent use Unit the 1st or be used in combination Unit the 1st and Unit the 2nd becomes easy.
Relevant the present invention the 3rd aspect in the described image processing system, when image processing system is installed paper feeder unit, can be installed to the 1st cell location on the image processing system main body aspect the present invention the 1st; Particularly under the situation of two-sided machine, can Unit the 2nd be installed to the 1st cell location.
Therefore, under the situation of single-side machine or two-sided machine, Unit the 1st and Unit the 2nd are located reliably to the image processing system main body; Particularly under the situation of two-sided machine, can make no offset really between Unit the 1st and the Unit the 2nd; Can form the 2nd transport path reliably.
Relevant the present invention the 4th aspect in the described image processing system, is under the situation of two-sided machine at image processing system aspect the present invention the 1st, on the basis that cover plate is opened wide, Unit the 2nd is set up in parallel adjacent to Unit the 1st.
Therefore, image processing system is being changed over from single-side machine under the situation of two-sided machine, the operation that Unit the 2nd is set up in parallel adjacent to Unit the 1st just becomes extremely easy.
The 5th aspect according to the present invention, also constitute FS the 2nd transport path in Unit the 2nd with the 3rd transport path and the 4th transport path, except to the conveying of double surface unit, also added other function of discharging paper, also such operating means is set on Unit the 2nd, therefore, under the structure that can realize the multi-usage function, can constitute the device that two-sided machine is used or single-side machine is used arbitrarily.
The 6th aspect according to the present invention, when when disconnecting as the solenoid coil of the 2nd operating means, set the 2nd along separate routes pawl so that, therefore, can suppress solenoid coil caused heating of connection and power consumption continuously paper P the 3rd transport path that leads; Can adopt small-sized, cheap solenoid coil; Can help the miniaturization of paper feeder unit.
The 7th aspect according to the present invention, the 1st operating means is simultaneously also as solenoid coil, this solenoid coil is arranged on better nearer apart from the cooling device in the image processing system main body as the solenoid coil of the 2nd operating means, therefore, can suppress heating and power consumption as the solenoid coil of the 1st operating means; Can help the miniaturization of paper feeder unit.

Claims (7)

1. a paper feeder unit comprises: be used for 1st transport path of copy paper to row's paper disc row paper; With the 2nd transport path that is used for copy paper is arranged paper or is used for copy paper is carried to double surface unit to other row's paper disc; The copy paper that fixation unit in image processing system transports out is carried by described the 1st transport path or the 2nd transport path selectively; It is characterized in that:
This paper feeder unit is partitioned into Unit the 1st that forms described the 1st transport path and the Unit the 2nd that forms described the 2nd transport path.
2. paper feeder unit according to claim 1 is characterized in that:
Described Unit the 1st comprises: the 1st exit roller, form the 1st guide plate of the 1st transport path and lead selectively shunt pawl on the 1st or the 2nd transport path of copy paper;
Unit the 2nd comprises: conveying roller, the drive unit that drives the 2nd exit roller or conveying roller that copy paper is carried to the 2nd exit roller or double surface unit, form the 2nd guide plate of the 2nd transport path and make the operating means of pawl operation along separate routes, this shunt pawl should be copy paper the 1st or the 2nd transport path that leads selectively.
3. according to the paper feeder unit described in the claim 1, it is characterized in that:
Described the 1st cell location on the main body of image processing system, the 2nd cell location on Unit the 1st.
4. according to the paper feeder unit described in the claim 1, it is characterized in that:
The cover plate that opens wide when paperboard is handled is installed on the side of image processing system, by described cover plate is opened wide, can load and unload described Unit the 2nd.
5. paper feeder unit according to claim 1 is characterized in that:
Described the 2nd transport path is made of 4th transport path of copy paper to described other row's paper discs row paper with being used for the 3rd transport path that is used for copy paper is carried to double surface unit;
Described Unit the 1st comprises copy paper is shunted to along separate routes pawl of the 1st on the described the 1st or the 2nd transport path;
Described Unit the 2nd comprises: make the 1st along separate routes the pawl operation the 1st operating means, copy paper is shunted to the pawl and make the 2nd the 2nd operating means of pawl operation along separate routes along separate routes of the 2nd on the 3rd or the 4th transport path.
6. paper feeder unit according to claim 5 is characterized in that:
Described the 2nd operating means is a solenoid coil, and when setting this solenoid coil and disconnecting (OFF), the described the 2nd along separate routes pawl copy paper is directed to the 3rd transport path.
7. paper feeder unit according to claim 6 is characterized in that:
Described the 1st operating means is a solenoid coil, and this solenoid coil is arranged on as the solenoid coil of the 2nd operating means apart from the cooling device in the image processing system more nearby.
CN 97121561 1996-10-30 1997-10-30 Paper feeder unit Expired - Fee Related CN1132061C (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP287780/96 1996-10-30
JP287780/1996 1996-10-30
JP28778096 1996-10-30
JP9009754A JPH10181978A (en) 1996-10-30 1997-01-22 Paper discharge unit
JP9754/1997 1997-01-22
JP9754/97 1997-01-22

Publications (2)

Publication Number Publication Date
CN1184271A true CN1184271A (en) 1998-06-10
CN1132061C CN1132061C (en) 2003-12-24

Family

ID=26344538

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 97121561 Expired - Fee Related CN1132061C (en) 1996-10-30 1997-10-30 Paper feeder unit

Country Status (2)

Country Link
JP (1) JPH10181978A (en)
CN (1) CN1132061C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
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CN1317606C (en) * 2002-11-20 2007-05-23 三星电子株式会社 Image forming apparatus
CN102190197A (en) * 2010-03-15 2011-09-21 株式会社东芝 Recording medium sorting apparatus, erasing apparatus, and recording medium sorting method
CN112079172A (en) * 2020-08-28 2020-12-15 远光软件股份有限公司 Paper processing assembly and printing equipment

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US6381442B1 (en) * 2000-01-31 2002-04-30 Sharp Kabushiki Kaisa Image forming apparatus with paper post-treatment device
US6647243B2 (en) * 2000-10-16 2003-11-11 Canon Kabushiki Kaisha Sheet treating apparatus, method of mounting sheet treating apparatus, and image forming apparatus
JP4333446B2 (en) 2004-03-31 2009-09-16 富士ゼロックス株式会社 Image forming apparatus
JP4647433B2 (en) * 2005-08-23 2011-03-09 株式会社リコー Branch device and image forming apparatus
JP4996436B2 (en) * 2007-11-28 2012-08-08 京セラドキュメントソリューションズ株式会社 Paper guide device and image forming apparatus equipped with the same
JP6921497B2 (en) * 2016-10-05 2021-08-18 キヤノン株式会社 Sheet transfer device, sheet processing device and image forming device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1317606C (en) * 2002-11-20 2007-05-23 三星电子株式会社 Image forming apparatus
CN102190197A (en) * 2010-03-15 2011-09-21 株式会社东芝 Recording medium sorting apparatus, erasing apparatus, and recording medium sorting method
CN112079172A (en) * 2020-08-28 2020-12-15 远光软件股份有限公司 Paper processing assembly and printing equipment

Also Published As

Publication number Publication date
CN1132061C (en) 2003-12-24
JPH10181978A (en) 1998-07-07

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