CN103318684B - Sheet-conveying device, image read-out and image processing system - Google Patents

Abstract

The present invention relates to a kind of sheet-conveying device, it has the driver element selectively rotated to the 1st direction and the 2nd direction, during rotation in addition to when driver element must stop to change direction of rotation, can suppress to stop the frequency of its chance rotated owing to coming self-contained image reading unit to stop instruction in the conveying of interior external device (ED).Regardless of the direction of rotation of motor, pull-out roll (114) all utilizes mechanism to rotate to constant direction.If paper is carried and arrives the position of distributing roller (125), then control portion makes the direction of rotation of motor be changed to reverse direction from forward direction.Thus, paper is carried via collaborative transport path (131).If paper arrives the position of pull-out roll (114), then control portion makes the rotation of motor temporarily cease.In the period that motor stops, control portion is made whether to start the inquiry of the paper conveying to image processing system.

Description

Sheet-conveying device, image read-out and image processing system

Technical field

The present invention relates to a kind of sheet-conveying device, image read-out and image processing system.

Background technology

At original document reading apparatus a kind of described in patent documentation 1, it is by making currently used two Individual driving source is made up of a driving source, it is achieved miniaturization, and realizes the reduction of cost.

Patent documentation 1: No. 3546822 publications of Japanese Patent No.

Summary of the invention

It is an object of the invention to, selectively rotate to the 1st direction and the 2nd direction having In the sheet-conveying device of driver element, except driver element is in order to change direction of rotation and necessary During rotation outside during stopping, can suppress owing to carrying out self-contained image reading unit in interior outside The conveying of device stops instruction and stops the frequency of the chance of this rotation.

Sheet-conveying device described in technical scheme 1, it is characterised in that have: the 1st of thin slice Transport path, it is from supplying the supply position of thin slice via the figure being read this thin slice by image reading unit The reading position of picture starts, until discharging the drain position of this thin slice；2nd transport path of thin slice, It is from the beginning of the 1st position on aforementioned 1st transport path, until on aforementioned 1st transport path 2nd position, the 2nd position, compared with the 1st position, is positioned on the conveying direction of aforementioned sheet Trip side；Driver element, it selectively rotates to the 1st direction and the 2nd direction and produces driving force； 1st conveying roller, it is in aforementioned 2nd position, and the driving force utilizing aforementioned driver element to produce is carried out Rotate, and carry aforementioned sheet；2nd conveying roller, it is on aforementioned 1st transport path, with The position of the aforementioned conveyance direction downstream side that aforementioned 1st position is compared, utilizes by aforementioned driver element The driving force produced rotates, and carries aforementioned sheet；Rotating mechanism, the most aforementioned driving is single The direction of rotation of unit how, its all make aforementioned 1st conveying roller along by aforementioned sheet the aforementioned 1st The direction of rotation being delivered to aforementioned 1st position on transport path from aforementioned 2nd position rotates；Obtain Unit, it, from comprising the external device (ED) of aforementioned image reading unit, obtains the conveying of aforementioned sheet Start and the instruction of conveying stopping；And control unit, aforementioned driver element is controlled by it, front State control unit, make aforementioned driver element rotate to aforementioned 1st direction, start from aforementioned supply position Put the conveying of the aforementioned sheet of supply, if this thin slice passes through aforementioned on aforementioned 1st transport path The position of the 1st conveying roller, and then be delivered to the position of aforementioned 2nd conveying roller, then make aforementioned driving Unit rotates to aforementioned 2nd direction and changes the direction of rotation of aforementioned 2nd conveying roller, if aforementioned Thin slice is transported to the position of aforementioned 1st conveying roller via aforementioned 2nd transport path, then make aforementioned Driver element stops, in the period that aforementioned driver element stops, if obtained by aforementioned acquisition unit The instruction that the conveying of aforementioned sheet stops, then carry out standby, until the conveying obtaining aforementioned sheet is opened The instruction begun, on the other hand, if being obtained the conveying of aforementioned sheet by aforementioned acquisition unit Instruction, then make aforementioned driver element rotate to aforementioned 1st direction and change aforementioned 2nd conveying roller Direction of rotation, after making aforementioned sheet pass through the position of aforementioned 1st conveying roller, by the aforementioned 2nd Conveying roller carries and discharges.

Sheet-conveying device described in technical scheme 2, it is characterised in that have: the 1st guide part Part, it guides the conveying direction of aforementioned sheet along aforementioned 1st transport path；2nd guiding parts, It is at the aforementioned sheet conveying direction upstream side compared with aforementioned 1st guiding parts, along the aforementioned 1st Transport path guides the conveying direction of aforementioned sheet；And linking part, it is by aforementioned 1st guide part Part and aforementioned 2nd guiding parts link, so that aforementioned 2nd guiding parts can be to away from aforementioned the The direction of 1 guiding parts rotates, aforementioned control unit, at aforementioned sheet and aforementioned 1st conveying roller Contact, and the front end of this thin slice is positioned at compared with aforementioned linking part on aforementioned 1st transport path During aforementioned conveyance direction downstream side, aforementioned driver element is made to stop.

Sheet-conveying device described in technical scheme 3, it is characterised in that there is the 3rd conveying roller, It is on aforementioned 1st transport path, in the aforementioned conveyance direction downstream side compared with aforementioned linking part, And at the aforementioned conveying direction upstream side compared with aforementioned 2 conveying rollers, utilize aforementioned driver element to produce Raw driving force rotates, and the 3rd conveying roller and opposed roller corresponding thereto are aforementioned to sandwich The state of thin slice carries this thin slice, and aforementioned control unit, at aforementioned sheet and aforementioned 1st conveying roller Contact, and the front end of this thin slice is positioned at and aforementioned 3rd conveying roller phase on aforementioned 1st transport path During the aforementioned conveying direction upstream side of ratio, aforementioned driver element is made to stop.

Image read-out described in technical scheme 4, it is characterised in that have: technical scheme 1 The sheet-conveying device described in any one in 3；And image fetching unit, it is from by aforementioned Image is read on the thin slice of sheet-conveying device conveying.

Image processing system described in technical scheme 5, it is characterised in that have: technical scheme 4 Described image read-out；And image formation unit, it makes by earlier figures as readout means reads The image taken is formed on the recording medium.

The effect of invention

According to the invention described in technical scheme 1, and it not to change rotation side at driver element To and obtain the situation of the instruction that thin slice conveying starts and conveying stops when stopping and comparing, Ke Yi During rotation in addition to when driver element must stop to change direction of rotation, suppress by This rotation is stopped in the conveying stopping instruction of interior external device (ED) in carrying out self-contained image reading unit The frequency of chance.

According to the invention described in technical scheme 2, contact at thin slice and the 1st conveying roller with not having And make driver element stop during the downstream of the front end of this thin slice conveying direction that is positioned at linking part The situation of structure is compared, and can suppress the generation of paperboard.

According to the invention described in technical scheme 3, when stopping the conveying of thin slice, can become thin The state that sheet is not sandwiched by the 3rd conveying roller and its opposed roller.

According to the invention described in technical scheme 4, arbitrary with do not have in technical scheme 1 to 3 The situation of the sheet-conveying device described in Xiang is compared, can be except driver element is in order to change rotation Direction and when must stop outside rotation during, suppress owing to coming including self-contained image reading unit External device (ED) conveying stop instruction and stop the frequency of the chance of this rotation.

According to the invention described in technical scheme 5, read with the image not having described in technical scheme 4 The situation that fetching is put is compared, and must be able to stop to change direction of rotation except driver element During rotation time outside, suppress owing to carrying out defeated at interior external device (ED) of self-contained image reading unit Stopping instruction being sent to stop the frequency of the chance of this rotation.

Accompanying drawing explanation

Fig. 1 is to observe from front face side to have the thin slice conveying dress that embodiments of the present invention relate to The summary construction diagram of the image processing system put.

Fig. 2 is the module map of the hardware configuration representing sheet-conveying device.

Fig. 3 is the schematic diagram delivery section sheet-conveying device amplified from front face side.

Fig. 4 is to observe top conveying guide part and the stravismus of bottom conveying guide part from front face side Figure.

Fig. 5 is delivery section to be amplified from front face side and represent the schematic diagram of drive mechanism with having an X-rayed.

Fig. 6 is to observe constant direction rotating mechanism and electromagnetism from the rear side of sheet-conveying device The oblique view of clutch.

Fig. 7 is the schematic diagram of the action for sheet-conveying device is described.

Fig. 8 is the schematic diagram of the action for sheet-conveying device is described.

Fig. 9 is the timing that communicates representing the control portion with the image processing system in conventional example Figure.

Figure 10 is that the communication in the control portion representing the image processing system related to embodiment is fixed Time figure.

Detailed description of the invention

(structure)

Fig. 1 is to observe from front face side to have the thin slice conveying dress that embodiments of the present invention relate to Put the summary construction diagram of the image processing system 100 of 10.Here, so-called front face side, be Referring to arrange the operating unit such as touch panel and operated key, user is at operation image processing system 100 One side time faced by.In contrast, so-called rear side, refer to the direction contrary with front face side Simultaneously.XYZ orthogonal coordinate system is set in image processing system 100.Here, from When its front face side observes image processing system 100, the width of image processing system 100 Limit is corresponding with X-axis, and the limit of the depth direction of image processing system 100 is corresponding with Y-axis.Will The straight line orthogonal with these X-axis and Y-axis is as Z axis.It is to say, relative to by quite In the X-axis of width and be equivalent to the plane that the Y-axis of depth direction represents, Z axis is equivalent to The coordinate axes of vertical direction.

Image processing system 100 is substantially by sheet-conveying device 10, sheet feed section 20, image shape One-tenth portion 30, image reading unit 40 are constituted.Sheet-conveying device 10, is using the quilt as original copy The paper sheet delivery read is to the reading position of image reading unit 40, by the paper after image reading The paper transport device discharged.Paper is an example of the thin slice that the present invention relates to.Sheet feed section 20 by the image forming position of paper supply to image forming part 30.Image forming part 30, warp Cross be referred to as charged, expose, image, transfer, each operation of fixing electrofax mode, The paper supplied by sheet feed section 20 forms image.In the present embodiment, image is formed Portion 30 is the unit forming coloured image but it also may be the unit forming monochrome image.Figure As reading part 40, formed being delivered to read in sheet-conveying device 10 on the paper of position Image be read out, result will be read to the supply of not shown control portion.Control portion is according to need Will by read result supply to image forming part 30, image forming part 30 is formed on paper and The corresponding image of reading result of supply.Image reading unit 40 is the image that the present invention relates to Read an example of unit.It addition, at least have sheet-conveying device 10 and image reading The equipment in portion 40, is an example of the image read-out that the present invention relates to.

Sheet-conveying device 10 have original copy mounting portion 11, discharge paper mounting portion 12 and Delivery section 13.Original copy mounting portion 11 is the carton put and carry the paper being read as original copy.Defeated Send portion 13 to be made up of multiple rollers, paper is carried.Sheet-conveying device 10 is via not scheming The switching mechanism shown can openedly and closedly be arranged on image reading unit 40.At sheet-conveying device In a part for the one side contacted with image reading unit 40 in 10, embed slit glass 14. If by delivery section 13 by paper sheet delivery to slit glass 14, then by image reading unit 40 Through slit glass 14, carry out the reading of the image formed on paper.Carry out image The paper read, is discharged to discharging paper mounting portion by delivery section 13.

Sheet feed section 20 has paper supply unit 22, and it is by housing the paper resettlement section 21 of paper with many Individual roller is constituted, and the paper sheet delivery being housed in paper resettlement section 21 is formed by the plurality of roller to image The image forming position in portion 30.

Image forming part 30, utilizes so-called intermediate transfer mode, uses Huang (Y), magenta (M), blue or green (C), black (K) these 4 kinds of toners form image.Image forming part 30 has Have photoconductor drum 31, charged device 32, exposure device 33, image reproducer 34, toner cartridge 35Y, 35M, 35C, 35K, intermediate transfer belt 36 and fixing device 37.Additionally, in Fig. 1 institute Label end additional letter (Y, M, C or K) in the element shown, represents this composition Key element is corresponding with some in above-mentioned 4 colors.These elements, although the color used Adjustment color is different, but primary structure and function are identical.Therefore, under these elements In the explanation of face, in the case of without distinguishing each color, omit the end of label and they are united It is referred to as " toner cartridge 35 ".

Photoconductor drum 31, from the teeth outwards stacked light guides electrolemma pivoting about with axle Cylinder-like part, is to maintain the image holding body of the electrostatic latent image formed from the teeth outwards.Charged device 32 make photoconductor drum 31 charged with the current potential of regulation.Exposure device 33 makes photoconductor drum 31 expose Light and form electrostatic latent image.Image reproducer 34 is by supplying toner to electrostatic latent image, and makes this quiet Electricity sub-image imaging, forms image on the surface of photoconductor drum 31.Toner cartridge 35 houses respectively Plant the toner of color, as required it is supplied to image reproducer 33.Intermediate transfer belt 36, be Keep the unit of the toner image transferred from photoconductor drum 31.Intermediate transfer belt 36 is by multiple Support roller supports, and in figure, the direction shown in arrow A1 rotates while moving.Fixing device 37, by the paper having transferred image from intermediate transfer belt 34 is heated and pressurizes, and make This image is fixed on paper.Photoconductor drum 31, charged device 32, exposure device 33, image reproducer 34, intermediate transfer belt 36, fixing device 37, by co-operating as the present invention relates to One example of image formation unit works.

Fig. 2 is to represent sheet-conveying device 10 and the hardware configuration of image processing system 100 main body Module map.Sheet-conveying device 10 has control portion 101, storage part 102 and communication Portion 103.Each several part is electrically connected by bus.Control portion 101 has CPU(Central Processing Unit), ROM(Read Only Memory), RAM(Random Access Memory) and measure the time timing unit.CPU is stored in ROM or storage part by execution Control program in 102, and each several part being connected with control portion 101 is controlled.Control portion 101 is an example of the control unit that the present invention relates to.Storage part 102 be such as flash memories this Plant storage device, such as storage control program.Communication unit 103 under the control in control portion 101, Communicate with the communication unit 183 of image processing system 100 main body.

Image processing system 100 has control portion 181, storage part 182, communication unit 183, UI Portion 184 and image forming part 30.Each several part is connected by bus.Control portion 181 have CPU, ROM and RAM.CPU is stored in the control program in ROM or storage part 182 by execution, And each several part being connected with control portion 181 is controlled.Storage part 182 be such as hard disk this Plant storage device, such as storage control program and view data.Communication unit 183 is in control portion 181 Control under, enter with the communication unit 103 of sheet-conveying device 10 and the communication terminal of user operation Row communication.UI(User Interface) portion 184 has such as touch panel or multiple button, and will The instruction of operation based on user notifies to control portion 181.Control portion 181 is according to by UI portion 184 The instruction of notice processes.Image forming part 30 is same as described above, paper is formed based on The image of view data.

Fig. 3 is the schematic diagram delivery section 13 sheet-conveying device 10 amplified from front face side. Delivery section 13 has paper and draws in roller 111, paper reading sensor 112, intake roller 113, draws Go out roller 114, paper by sensor 116, stop roller 117, image reading Time Pick-off Units 119, Outlet roller 121, paper pass through sensor 123, distributing roller 125, solenoid 127, Duo Gecong Action roller 115,118,122,126, usual transport path 130, collaborative transport path 131, turn over Turn transport path 132, top conveying guide part 135 and bottom conveying guide part 136.Delivery section 13, in addition to the multiple rollers shown in Fig. 2, also there is the driving machine for making these rollers drive Structure (the most not shown).But for convenience of explanation, first carry out delivery section 13 wants portion With the explanation of each roller, afterwards drive mechanism is illustrated.

Generally transport path 130, in figure 3, is from the beginning of roller 111 drawn in by paper, via Feed rolls 113, pull-out roll 114, stop roller 117, slit glass 14, outlet roller 121, To distributing roller 125, the path when the conveying paper of the position of each roller.On the other hand, collaborative conveying Path 131, is to make from the usual transport path 130 being positioned near distributing roller 125 and collaborative conveying One example of connecting portion L1(the 1st position in path 131), and it is positioned at pull-out roll 114 Neighbouring usual transport path 130 and the connecting portion L2(the 2nd of collaborative transport path 131 The example put) connected path.On usual transport path 130, connecting portion L2 position In the sheet transport direction upstream side compared with connecting portion L1.Upset transport path 132, be On usual transport path 130, to be positioned at connecting portion L2 in sheet transport direction downstream Part, in upset transport path 132, makes the conveying direction of paper overturn.In aftermentioned, In the case of referred to as " sheet transport direction ", refer on usual transport path 130, The direction that paper carries towards distributing roller 125.

Sheet-conveying device 10 of the present embodiment can carry out two-sided reading.In delivery section In 13, made by control portion 101 the driving source of drive mechanism rotate to forward direction, and make paper Open via usual transport path 130, be firstly transferred to the discharge being positioned on upset transport path 132 The position of roller 125, then by making driving source rotate to reverse direction, makes paper via collaborative Transport path 131, returns to usual transport path 130 again.If at collaborative transport path Carry paper on 131 to the position of pull-out roll 114, then control portion 101 makes the driving of drive mechanism The direction of rotation in source becomes forward direction.Further, make paper defeated on usual transport path 130 Send, arrive again at the position of distributing roller 125.Now, paper is in surface becomes shape above State, if the paper so discharged is positioned in discharge paper mounting portion 12, then the arrangement of paper Order is contrary with before conveying.Thus, export below to make sheet surface become, by control Portion 101 processed makes the direction of rotation driving source of drive mechanism become reverse direction again, and in association With carrying paper on transport path 131.Then, make paper defeated on usual transport path 130 Send, if becoming following state with surface to arrive upset transport path 132, then by distributing roller 125 discharge to discharging paper mounting portion 12.Generally transport path 130 and upset transport path 132, By cooperation, an example as the 1st transport path that the present invention relates to works.It addition, Collaborative transport path 131 is an example of the 2nd transport path that the present invention relates to.

Paper draws in roller 111 on usual transport path 130, is positioned at sheet transport direction Upstream.Roller 111 drawn in by paper, utilizes the transmission band being erected between itself and feed rolls 113, companion Rotate with the rotation of feed rolls 113, by put the paper that is loaded in original copy mounting portion 11 to The inside of delivery section 13 is drawn in.Feed rolls 113, on usual transport path 130, is positioned at connection The upstream side of the sheet transport direction of position L2, utilizes driving force produced by driving source to revolve Then conveying paper.Feed rolls 113 connects electromagnetic clutch described later, by this electromagnetism from Clutch controls to come the transmission of the driving force in self-driven source.In aftermentioned, as electromagnetic clutch, The driving side of electromagnetic clutch will be made to be connected with non-drive side by the break-make of electromagnet is controlled State, be referred to as making electromagnetic clutch become connection status, the driving side of electromagnetic clutch will be made The state not being connected with non-drive side, is referred to as making electromagnetic clutch become notconnect state.The most just Being to say, when this electromagnetic clutch is disconnected, feed rolls 113 does not rotates.It addition, feeding The position of roller 113 is supplied with the supply position of paper.

Paper reading sensor 112, on usual transport path 130, is arranged on paper and draws in roller Between 111 and feed rolls 113, if detecting paper on this position, then to control portion 101 Notice detects the situation of paper.Control portion 101 after receiving this notice, make with above-mentioned enter The electromagnetic clutch connected to roller 113 becomes connection status, thus carries paper.

Pull-out roll 114 is positioned at the position of connecting portion L2, by the driving utilizing driving source to produce Power carries out rotating and carrying paper.Pull-out roll 114 connects and is connected to above-mentioned feed rolls 113 On the different other electromagnetic clutch of electromagnetic clutch, by this electromagnetic clutch control from The transmission of the driving force in driving source.It is to say, be in notconnect state at this electromagnetic clutch Time, pull-out roll 114 does not rotates.Pull-out roll 114 is the one of the 1st conveying roller that the present invention relates to Individual example.Driven voller 115 rotates with the rotation of pull-out roll 114, carries paper. Paper on usual transport path 130, is positioned at pull-out roll 114 and driven by sensor 116 Upstream side in the sheet transport direction of roller 115, if be detected that paper is by this position, then Situation about detecting is notified to control portion 101.Control portion 101 after receiving this notice, as Really the timing time of timing unit is through the predetermined time, then make the electromagnetism being connected with pull-out roll 114 Clutch becomes connection status.Receiving this instruction, pull-out roll 114 rotates, and from Action roller 115 rotates and carries paper.The so-called scheduled time, refer to pass through sensor by paper The paper of the position of 116 contacts with pull-out roll 114, until the width of top of form is every Put aligned in position with pull-out roll 114 approximate time of process.

Stop roller 117, be positioned at the downstream of the sheet transport direction of linking part 137, simultaneously position In the upstream side of the sheet transport direction of distributing roller 125, the driving force utilizing driving source to produce enters Row rotates.Driven voller 118 rotates with the rotation stopping roller 117, carries out paper Conveying.Stop that this paper, together with driven voller 118, is entered clamping the state of paper by roller 117 Row conveying, by predetermined timing by paper sheet delivery to slit glass 14, and by image Reading part 40 reads the image formed on paper.Stop that roller 117 is the 3 the present invention relates to One example of conveying roller.It addition, driven voller 118 be the present invention relates to the 3rd conveying roller One example of relative opposed roller.It addition, the position of slit glass 14, it is to be read by image Take the reading position that portion 40 reads the image of paper.

Image reading Time Pick-off Units 119, on usual transport path 130, is positioned at stop roller 117 And the sheet transport direction downstream of driven voller 118, if be detected that the front end of paper, then will This situation notifies to control portion 101.Control portion 101 receives this notice, is controlled, so that by The driving that driver element produces stops, until image reading unit 40 can read the timing of image.Its As a result, during stopping in this driving, stopping that roller 117 does not rotates, therefore paper also will not Carried and be positioned on slit glass 14.If control portion 101 utilizes communication unit 103, from figure Can read the notice of timing as forming communication unit 183 reception of device 100 main body, then control System, so that the driving produced by driver element starts again at.Its result, by stopping roller 117 He The paper of driven voller 118 conveying passes through on slit glass 14, image reading unit 40 read It is taken on paper the image formed.

Outlet roller 121, carries the paper completing image reading.Driven voller 122 is accompanied Rotate with the rotation of outlet roller 121, paper is carried.Paper passes through sensor 123 on usual transport path 130, is positioned at outlet roller 121 and the paper sheet delivery of driven voller 122 Downstream, direction, is for determining that the direction of rotation of the driving force making driving source becomes reverse direction The sensor of timing.If by sensor 123, paper detects that the rear end of paper is by being somebody's turn to do Position, then notify this instruction to control portion 101.Control portion 101 after receiving this notice, If the timing time of timing unit is through the predetermined time, then it is controlled, so that drive mechanism The direction of rotation of driving force become reverse direction.Now, the one end part of paper is in distributing roller The position of 125, and be positioned on upset path 132.

In order to make the paper that carries on usual transport path 130 position towards distributing roller 125 Conveying, usual transport path 130 must arrive the position of distributing roller 125.At outlet roller 121 Downstream, near usual transport path 130 side of connecting portion L2, there is depression bar 124. When not applying physical force, depression bar 124 hangs down because of deadweight, at connecting portion L2 In the part that inaccessible generally transport path 130 is connected with upset path 132.If the most defeated Send the paper carried on path 130 to contact with depression bar 124, then depression bar 124 becomes by paper The state of jack-up.Further, if paper passes through, then depression bar 124 declines due to deadweight, closes Plug towards the path of usual transport path 130 from connecting portion L2, afterwards turns over, makes conveying Paper is towards collaborative transport path 131.

Distributing roller 125, is positioned at the paper sheet delivery of connecting portion L1 on usual transport path 130 The position in downstream, direction, and be positioned on upset transport path 132, utilize driving source to produce Driving force carries out rotating and carrying paper.Distributing roller 125, when rotating to forward direction, will be by Image reading unit 40 completes the paper of the two-sided reading of image to discharging paper mounting portion 12 row Go out.And when rotating to reverse direction, paper is carried towards collaborative transport path 131. It addition, the paper of the two-sided reading for unfinished image, distributing roller 125 is with control portion 101 The direction of rotation making driving force becomes reverse direction and self also reverses, and makes these paper along collaborative Transport path 131 carries.Distributing roller 125 is an example of the 2nd conveying roller that the present invention relates to Son.It addition, the position at distributing roller 125 place, it it is the drain position discharging paper.Driven voller 126 rotate with the rotation of distributing roller 125, thus carry paper.Solenoid 127, It is solenoid actuator in more detail, such as, by helically rolling up in metal-cored periphery Coiling forms.Solenoid 127, makes metal-cored up and down motion by flowing through electric current.Spiral shell Spool 127 is arranged on following position, i.e. its metal-cored move up and down time, driven voller Therefore 126 rise.Carrying along collaborative transport path 131 at paper, the front end of paper arrives and draws When going out the position of roller 114, control portion 101 makes current flow through solenoid 127, so that driven voller 126 are raised above, and make distributing roller 125 and driven voller 126 separate.Thus, each other to phase negative side Paper will not be pulled round about to the pull-out roll 114 rotated and distributing roller 125, and The position of distributing roller 125 and driven voller 126 will not sandwich paper, acts on paper in this position On resistance reduce, therefore, paper is successfully carried by pull-out roll 114.

Top conveying guide part 135 and bottom conveying guide part 136, be along usual transport path The guiding parts of 130 conveying directions guiding paper.Paper, when being carried, is led with top conveying Carry guide part 136 to portion 135 and bottom to contact, guide its direction of advance.Top conveying is led In vertical direction, the upside of bottom conveying guide part 136 it is positioned to portion 135.It addition, such as figure Shown in, bottom conveying guide part 136 carries the sheet transport direction of guide part 135 on top Upstream side, guides the conveying of paper along usual transport path 130.Top conveying guide part 135 Guide part 136 is carried, in the end close proximity away from distributing roller 125 side, by even with bottom Meet portion 137 to link each other.Linking part 137, on usual transport path 130, is positioned at pull-out The downstream of the sheet transport direction of roller 114.

Fig. 4 is to observe top conveying guide part 135 and bottom conveying guide part 136 from front face side Oblique view.Top conveying guide part 135 and bottom conveying guide part 136, near linking part On the end of the side of 137, it is respectively provided with comb shape.When this comb is engaged with each other, Axial rotary depth direction is through the center of linking part 137.Thus, top conveying guides Portion 135 can carry guide part 136 to away from bottom centered by the rotary shaft of linking part 137 Direction rotate.Such as, if there is paperboard in the defeated device of thin slice 10, then user makes top Conveying guide part 135 rotates, from open mode to the direction away from bottom conveying guide part 136 Sheet-conveying device 10 in take out the paper snapped in.Top conveying guide part 135 is the present invention One example of the 2nd guiding parts related to.Bottom conveying guide part 136 is to the present invention relates to An example of the 1st guiding parts.Below, drive mechanism is illustrated.

Fig. 5 is the signal drive mechanism of delivery section 13 amplified from front face side and represent with having an X-rayed Figure.In Figure 5, in order to represent the position of the depth direction of each parts, the degree of depth arranges rank Ladder, represents the parts of the depth location being positioned at each ladder respectively with difform line.First, Represent with solid line and be positioned at the most inboard parts when front face side observes delivery section 13.It addition, with void Line represents the parts of the previous stage ladder side being positioned at the parts represented with solid line.It addition, with dot-dash Line represents the parts of the more previous stage ladder side being positioned at the parts being represented by dotted lines.It addition, with double Chain-dotted line represents the parts of the more previous stage ladder side being positioned at the parts represented with single dotted broken line.This The parts of a little drive mechanisms represented with difform line, are positioned at the rear side of each roller.It addition, Each roller is represented with the solid line that the parts than drive mechanism are thick.Additionally, for convenience of explanation, for In figure 3 it is stated that part, omit the description.

As the drive mechanism of delivery section 13, there is motor 140, large diameter gear 141, little Footpath gear 142, gear 144,145,146,147,160, electromagnetic clutch 143,148, Constant direction rotating mechanism 149 and transmission band 161.Additionally, the motor 140 shown in figure, Show as the gear that drive shaft with motor in practice directly links.Gear 144 and discharge The rotary shaft of roller 125 connects, and gear 147 is connected with the rotary shaft of feed rolls 113, electromagnetism from Clutch 148 is connected with the rotary shaft of pull-out roll 114.Gear 144,147 and electromagnetic clutch 148, The driving force produced to each roller transmission motor 140 connected.Large diameter gear 141 and path Gear 142 has identical rotary shaft, for example, two-stage gear.It addition, electromagnetic clutch 143 And gear 145 has identical rotary shaft, for example, two-stage gear.Electromagnetic clutch 143 and 148 have the gear utilizing the effect of electromagnet to contact with driving side/separate.This gear and each tooth Wheel engagement.

Motor 140 is selectively to forward direction and the reverse in the direction contrary with forward direction Direction carries out rotating and producing driving force.Motor 140 is the driver element that the present invention relates to One example.It addition, forward direction is an example in the 1st direction that the present invention relates to, inverse Turn the example that direction is the 2nd direction that the present invention relates to.Here, with motor 140 In case of forward direction rotates, the transmission to the driving force between each roller and gear is entered Row explanation.When motor 140 rotates to forward direction, connect with the drive shaft of motor 140 The gear of knot rotates to the arrow R1 direction of diagram.Thus, the gear with motor 140 engages Large diameter gear 141 rotate to arrow R2 direction, accompany therewith, small-diameter gear 142 is also to work R3 direction for equidirectional rotates.Small-diameter gear 142 engages with gear 144.Thus, tooth Wheel 144 rotates to arrow R4 direction.Driving force is transmitted by gear 144 to distributing roller 125, by This, distributing roller 125 rotates to the direction discharging paper.

It addition, small-diameter gear 142 engages with the gear of electromagnetic clutch 143.Thus, electromagnetism The driving side gear of clutch 143 rotates to the direction of arrow R5.Electromagnetic clutch 143 controls Transmission to the driving force of gear 145.It is to say, at the driving side of electromagnetic clutch 143 When gear is in state (i.e. the notconnect state) separated with slave end, driving force is not to gear 145 transmission, on the other hand, the driving side gear at electromagnetic clutch 143 is in slave end even During state (i.e. the connection status) connect, driving force transmits to gear 145, and gear 145 is to arrow Head R6 direction rotates.Gear 145 engages with gear 146, and gear 146 engages with gear 147. Thus, gear 146 rotates to arrow R7 direction, and gear 147 is to the arrow R8 direction of diagram Rotate.Driving force is transmitted by gear 147 to feed rolls 113, and feed rolls 113 is to conveying paper Direction rotate.It is to say, electromagnetic clutch 143 switch driving force from motor 140 to The state of the transmission of feed rolls 113 and the state do not transmitted.

Electromagnetic clutch 148, to the driving force transmitted from constant direction rotating mechanism 149 to drawing The transmission going out roller 114 is controlled.That is, when electromagnetic clutch 148 is in notconnect state, Driving force does not transmits to pull-out roll 114.On the other hand, it is in connection at electromagnetic clutch 148 During state, driving force transmits to pull-out roll 114, and pull-out roll 114 is to the direction rotation of conveying paper Turn.It is to say, electromagnetic clutch 148 switches driving force from motor 140 to pull-out roll 114 The state transmitted and the state do not transmitted.Constant direction rotating mechanism 149, is for utilizing planet Gear mechanism, makes electromagnetic clutch 148 and has the rotary shaft identical with electromagnetic clutch 148 Pull-out roll 114 all the time to fixed-direction rotate mechanism.Gear 160, stop roller 117, Transmission band 161 is set up on outlet roller 121.Thus, driving force from gear 160 to stop roller 117 And outlet roller 121 transmits.Below, constant direction rotating mechanism 149 is illustrated.

Fig. 6 is to observe constant direction rotating mechanism 149 He from the rear side of sheet carrying mechanism 10 The oblique view of electromagnetic clutch (driving side gear) 148.Constant direction rotating mechanism 149 by Internal gear 150, sun gear 151, planet carrier 152, planetary gear 153,154,155 are constituted. Internal gear 150 is discoid parts, has the gear teeth in circumferential lateral surface.In figure 6, in order to Convenient explanation, omits the shape of the gear teeth and is depicted as circle.This is the most identical to sun gear 151. The rotary shaft identical with internal gear 150 arranges sun gear 151.It is to say, internal gear 150 and sun gear 151 constitute two-stage gear.In the periphery of sun gear 151, make with round shape cutting Planet carrier 152 for the groove that the rotary shaft of planetary gear 153 and 154 embeds.If sun gear 151 rotate, then planetary gear 153 and 154 by with engaging of sun gear 151 and with respectively From rotary shaft pivot about, and, using sun gear 151 as centrally along planet carrier 152 carry out circular motion.

Such as, sun gear 151 is made to rotate to the direction of arrow L1a.In this case, planet Gear 153 rotates to L2a direction, and justifies to the direction near electromagnetic clutch 148 Zhou Yundong.Further, owing to the gear of planetary gear 153 and electromagnetic clutch 148 engages, because of This electromagnetic clutch 148 rotates to the direction of arrow L3a.On the other hand, sun gear 151 is made Rotate to the direction of the L1b as the direction contrary with arrow L1a.In this case, planet Gear 154 rotates to L2b direction, and carries out circumference to the direction near planetary gear 155 Motion.Further, owing to planetary gear 154 and planetary gear 155 engage, therefore planetary gear 155 rotate to the direction of arrow L3b.Further, due to planetary gear 155 and electromagnetic clutch The gear engagement of 148, therefore electromagnetic clutch 148 rotates to the direction of arrow L4b.So, Owing to arrow L3a and arrow L4b represents identical direction of rotation, therefore rotate in constant direction In mechanism 149, no matter sun gear 151 to which direction rotates, electromagnetic clutch (driving Side gear) 148 all the time to constant direction rotate.Thus, constant direction rotating mechanism 149 is logical Often on transport path 130, so that paper is delivered to connecting portion from the position of connecting portion L2 The direction of rotation of the position of L1 makes pull-out roll 114 rotate.Constant direction rotating mechanism 149 is this One example of the rotating mechanism that invention relates to.

(action)

Below, the action to sheet-conveying device 10 illustrates.Fig. 7 and Fig. 8 is for saying The schematic diagram of the action of bright sheet-conveying device 10.In Fig. 7 and Fig. 8, incite somebody to action from front face side The schematic diagram that sheet-conveying device 10 amplifies, along the sequential of action with ascending order Allotment Serial Number.Under In stating, the figure that will be assigned with sequence number " 1 " the most in the figure 7 is referred to as No. 1 of Fig. 7.If will Start to the flow process carrying out two-sided reading and discharge sequentially to represent from conveying paper, then become Fig. 7 No. 1, No. 2 of Fig. 7, No. 3 of Fig. 7, No. 4 of Fig. 7, No. 5 of Fig. 8, Fig. 8 No. 6, No. 3 of Fig. 7, No. 4 of Fig. 7, No. 5 of Fig. 8, No. 6 of Fig. 8, Fig. 8 No. 7, No. 8 of Fig. 8.Make No. 3 of Fig. 7, No. 4 of Fig. 7, No. 5 of Fig. 8, Fig. 8 No. 6 repetition reasons, as it has been described above, be in order to the order of the paper of discharge is adjusted to As originally.For the accompanying drawing relevant with these actions, omit repeat specification.It addition, at Fig. 7 And in Fig. 8, it is depicted with arrows the direction of rotation of each roller.It is not depicted with arrows the roller of direction of rotation, Expression is driven pulley or the roller now not driven.

No. 1 expression paper P1 of Fig. 7 is drawn into and starts the situation of conveying.First, if paper Open reading sensor 112 and detect the front end of paper P1, then notify this situation to control portion 101. Control portion 101 is after receiving this notice, if being notified through the predetermined time by timing unit, Electromagnetic clutch 143 is then made to become connection status.Thus, rotating forward by motor 140 The driving force produced, to large diameter gear 141, small-diameter gear 142, electromagnetic clutch 143, tooth Wheel 145, gear 146, gear 147 transmit, and feed rolls 113 rotates to the direction of shown by arrow. Accompany therewith, transmission band the paper being connected with feed rolls 113 draws in roller 111 also to diagram arrow Head direction rotates.It addition, now, rotating forward of motor 140 driving force produced Transmitting to large diameter gear 141, small-diameter gear 142, gear 144, distributing roller 125 is to diagram arrow Head direction rotates.It addition, now, rotating forward of motor 140 driving force produced Transmit to internal gear 150, sun gear 151, further from gear 160 to setting up transmission band 160 Stop roller 117 and outlet roller 121 transmit.Thus, stop roller 117 and outlet roller 121 to Shown by arrow direction rotates.It addition, now, owing to electromagnetic clutch 148 is in disconnected shape State, does not the most transmit the rotation by motor 140 and the driving force that produces, and pull-out roll 114 is not Rotate.

No. 2 expressions of Fig. 7 are carried the situation of paper P1 by pull-out roll 114.If paper passes through Sensor 116 detects the front end of paper P1, then notify this situation to control portion 101.Control Portion 101 is after receiving this notice, if the timing time of timing unit is through the predetermined time, Then make electromagnetic clutch 148 become connection status, and make electromagnetic clutch 143 become non-company Connect state.Its result, owing to not transmitting driving force, therefore feed rolls 113 stops its rotation. It addition, accompany therewith, paper is drawn in roller 111 and is also stopped its rotation.On the other hand, due to electricity Magnet clutch 148 is in connection status, is therefore transmitted driving by constant direction rotating mechanism 149 Power, pull-out roll 114 rotates to shown by arrow direction.It addition, here, control portion 101 will The number of times making electromagnetic clutch 148 become connection status counts as variable C, is stored in In RAM.The initial value of variable C is 0.In order to read the two sides of paper, and surface is made to become For following and discharge, same paper is in the position of pull-out roll 114, it is necessary to carry 3 times, i.e. Surface reading conveying, back side reading conveying and interior outside upset conveying.Due to When the value of variable C is " 3 ", the paper in current conveying has been drained off, under therefore can starting The conveying that a piece of paper is opened.If starting the conveying of next paper, then control portion 101 is by variable C Reset.The timing of No. 2 of Fig. 7, the value of variable C is " 1 ".If paper is by sensing Device 116 detects the rear end of paper P1, then notify this situation to control portion 101.Control portion exists 101 after receiving this notice, if the timing time of timing unit is through the predetermined time, then makes Electromagnetic clutch 148 becomes notconnect state.

No. 3 expressions of Fig. 7 are read, by image reading unit 40, the image formed on paper P1, And the situation when front end of next paper P2 abuts with feed rolls 113.If paper P1 Being delivered to stop the position of roller 117, image reading Time Pick-off Units 119 detects paper P1's Front end, then image reading Time Pick-off Units 119 notifies this situation to control portion 101.Control portion 101 after receiving this notice, makes the driving of motor 140 temporarily cease, until reading from image Take portion 40 and receive the notice that the reading of image is ready to complete.Further, if control portion 101 makes Receive the reading of image from the communication unit 183 of image processing system 100 main body with communication unit 103 Take the notice being ready to complete, then make the driving of motor 140 start again at.Thus, the most defeated P1 is opened in paper feeding, if passed through on slit glass 14, then image reading unit 40 reads at paper Open the image formed on P1, reading result is supplied to control portion 181.Control portion 181 makes reading Take result to be stored in RAM, and be emitted on paper to image forming part 30 as required Form instruction based on the image reading result.

The paper P1 passed through on slit glass 14, is carried by outlet roller 121.At Fig. 7 No. 3 in, owing to the front end of paper abuts with depression bar 124, therefore depression bar 124 becomes and lifts State.Here, if paper detects the rear end of paper P1 by sensor 123, then This situation is notified to control portion 101.Control portion 101 is after receiving this notice, if timing The timing time in portion through the predetermined time, then makes the direction of rotation of motor 140 become reverse Direction.This scheduled time so-called, e.g. detect paper from by paper by sensor 123 The rear end of P1 starts, and is delivered to the time needed for the position of distributing roller 125 to the rear end of paper P1. The depression bar 124 lifted with paper by declining because of deadweight.

No. 4 expression motor 140 of Fig. 7 rotate to reverse direction, and paper P1 is in collaborative conveying Situation when carrying on path 131.Paper P1 is carried by distributing roller 125, and its front end is towards drawing Go out the direction of roller 114.

The situation that No. 5 expression paper P1 of Fig. 8 carry on collaborative transport path 131.If Paper detects the front end of paper P1 by sensor 116, then notify this feelings to control portion 101 Condition.Control portion 101 is after receiving this notice, if the timing time of timing unit is through predetermined Time, then make electromagnetic clutch 148 become connection status.Variable C is entered by control portion 101 Row counting, its result, the value of variable C becomes " 2 ".Now, the rotation side of motor 140 To becoming reverse direction, but due to the effect of above-mentioned constant direction rotating mechanism 149, electromagnetism from The direction of rotation of clutch 148 becomes fixed-direction, i.e. forward direction.Thus, pull-out roll 114 Also rotate to forward direction and carry paper P1.

No. 6 expression motor 140 of Fig. 8 rotate forward again, and solenoid 127 will be from The situation that action roller 126 promotes.Control portion 101, becomes connection status making electromagnetic clutch 148 Afterwards, in the case of the value of variable C is " 2 " or " 3 ", by making current flow through helical Pipe 127 and be controlled, make driven voller 126 increase.It addition, now, control portion 101 makes The direction of rotation of motor 140 is changed to forward direction from reverse direction.Now, pull-out roll 114 It is rightabout with the direction of rotation of distributing roller 125, but owing to driven voller 126 rises, therefore Release the state that paper rightabout to each other pulls, and at distributing roller 125 and driven voller 126 Position will not sandwich paper, resistance reduces, and paper P1 is carried by pull-out roll 114.

In No. 6 of Fig. 8, make the direction of rotation of motor 140 from reverse in control portion 101 When direction is changed to forward direction, the motor 140 of reverse temporarily cease its rotate, backward Forward direction rotates.The control portion 101 of sheet-conveying device 10, stops rotation at motor 140 The timing turned, utilizes communication unit 103 to lead to the communication unit 183 of image processing system main body Letter, the instruction that conveying starts and conveying stops of inquiry paper, and obtain inquiry result.Control Work as an example of the acquisition unit that the present invention relates in portion 101.It addition, image Formed in device 100, including at least image reading unit 40 in addition to sheet-conveying device 10 Part, is an example of the external device (ED) comprising image reading unit.

Such as, in image processing system 100, in each portion of image processing system 100 main body The processing speed divided is not as good as the processing speed of sheet-conveying device 10, or produces paperboard or communication In the case of bad problem, even if paper sheet delivery is to image reading position, come into question can Energy property is the highest.Therefore, producing in the case of this problem, control portion 181 for from The inquiry of sheet-conveying device 10, utilizes communication unit 183 to make to sheet-conveying device 10 notice The instruction that the conveying of paper stops.If the control portion 101 of thin slice delivery section 10 utilizes communication unit 103 obtain this notice, then by making the rotating stopping of motor 140 make the conveying of paper stop. Then, if the problems referred to above release, then control portion 181 utilizes communication unit 183 to carry to thin slice Device 10 notice makes the instruction that the conveying of paper starts.If control portion 101 utilizes communication unit 103 Obtain this notice, then make motor 140 rotate to forward direction.Below, to conventional example and basis The difference of the above-mentioned inquiry timing in embodiment illustrates.

Fig. 9 is the communication representing the control portion 181 with image processing system 100 in conventional example The figure of timing.Fig. 9 (a) and Fig. 9 (b), all temporarily ceases reverse direction at motor 140 Rotation, then to forward direction rotate and carry the timing of paper, to image processing system 100 The control portion 181 of main body inquires.Fig. 9 (a) represents the return inquiry when answering for the first time Result is the situation of the notice of OK, and this OK represents and do not comes into question, and can start the defeated of paper The instruction sent.In this case, motor 140 keeps its state to continue to forward direction rotation. On the other hand, Fig. 9 (b) represents in the situation once returning the notice that inquiry result is NG, This NG represents the instruction making the conveying of paper stop owing to coming into question.In this case, Control portion 101 makes the rotation of motor 140 temporarily cease, until obtaining the notice of OK.By This, the conveying of paper also stops.Then, if solution removes, then image processing system 100 Control portion 181, utilize communication unit 183 to return the notice of OK to thin slice delivery section 10.By This, control portion 101 makes motor 140 rotate to forward direction, starts again at the conveying of paper.

So, in the prior embodiment, owing to the timing carried at paper is to image processing system 100 Control portion 181 inquire, the paper that therefore can produce in conveying temporarily ceases, in problem The state of conveying is started again at after releasing.In sheet-conveying device 10, if the paper carried Open and temporarily cease, then, when starting again at conveying, the front end of paper is sometimes in transport path It is stuck and causes paperboard.Therefore, it is intended that after the conveying starting a paper, except necessity Outside MIN timing, the conveying not carrying out paper stops.In contrast, in this enforcement In mode, as described below.

Figure 10 is to represent that the control portion 181 with the image processing system 100 in present embodiment is entered The figure of the timing of row communication.Figure 10 (a) and Figure 10 (b), all stops rotation at motor 140 Timing in Zhuaning, inquires to the control portion 181 of image processing system 100 main body.Figure 10 A () represents the situation returning the notice that inquiry result is OK when answering for the first time.In these feelings Under condition, control portion 101 makes the motor 140 of stopping rotate to forward direction.Thus, again Start the conveying of paper.On the other hand, Figure 10 (b) represent once return inquiry result be The situation of the notice of NG.In this case, owing to motor 140 is in stopping, therefore controlling Portion 101 processed continues to standby, until obtaining the notice of OK.Then, if solution removes, The then control portion 181 of image processing system 100, utilizes communication unit 183 to thin slice delivery section 10 Return the notice of OK.Thus, control portion 101 makes motor 140 rotate to forward direction, Start again at the conveying of paper.

So, in the present embodiment, owing to the direction of rotation at motor 140 is from reverse side In time changing into forward direction, it rotates and enters the timing stopped temporarily, carries out conveying and starts and conveying Therefore the inquiry of the instruction stopped, even if receiving the instruction that conveying stops, due to motor 140 Stop, the conveying of paper also will not be made to repeat to stop.Thus, except in order to make motor 140 Outside the timing changing its direction of rotation and temporarily cease, the paper being difficult in carrying stops After start again at the action of conveying, be therefore not easy to produce paperboard.

It addition, in No. 6 of Fig. 8, if the phase rotated to reverse direction at motor 140 Between, the front end of paper arrives the position of pull-out roll 114, then control portion 101 makes motor 140 Direction of rotation when reverse direction changes into forward direction, the rotation making motor 140 is temporary transient Stop, but making this stopping timing is following timing.It is to say, at paper and pull-out roll 114 Contact, and, the front end of this paper, on usual transport path 130, is positioned at and linking part 137 The sheet transport direction downstream compared, and it is positioned at the paper sheet delivery side compared with stopping roller 117 During scope to the upstream side, control portion 101 makes the rotation of motor 140 stop.Later should Scope is referred to as stop area.If paper is detected at collaborative transport path by sensor 116 The front end of the paper carried on 131, then notify this situation to control portion 101.Control portion 101 After receiving this notice, if the timing time of timing unit is through the predetermined time, then make electricity The driving of motivation 140 stops.The so-called scheduled time, refer to passed through sensor 116 by paper After detecting the front end of paper, until the front end of paper is positioned at the time that stop area is required, Its rotary speed based on motor 140 and from paper by sensor 116 to stop area Distance and predefine.

Owing to stopping conveying when being positioned at stop area in the front end of paper, therefore have following excellent Point.Such as, linking part 137, easily make paper block at its part engaged.If at paper The upstream side of the front end sheet transport direction that is positioned at linking part 137 time stop the conveying of paper, When then starting again at the conveying of paper, the front end of paper is easily stuck in and causes on linking part 137 Paperboard.Therefore, by being positioned in the front end of paper under the sheet transport direction of linking part 137 The rotation making motor 140 during trip stops, and suppresses paperboard.

If it addition, stopping the defeated of paper when being positioned at the downstream stopping roller 117 in the front end of paper Send, then become paper by the state stopping that roller 117 sandwiches.Such as, in the situation producing paperboard Under, user makes conveying guide part 135 in top to the direction rotation away from bottom conveying guide part 136 Turn, after sheet-conveying device 10 becomes open mode take out paper, if but be in paper by Stop the state that roller 117 sandwiches, then can produce user will be by stopping that roller 117 presss from both sides by hands operation The trouble that the paper entered takes out.In contrast, owing to being positioned in the front end of paper and stopping roller 117 The rotation making motor 140 during the sheet transport direction upstream compared stops, and therefore suppresses paper It is blocked roller 117 to sandwich.Additionally, now, paper is also clipped in pull-out roll 114 and in contrast Driven voller 115 between, but make top conveying guide part 135 to away from bottom conveying guide The direction in portion 136 rotates, and when making sheet-conveying device 10 become open mode, pull-out roll 114 Separate with driven voller 115, thus become the state not clamping paper.

Again return to Fig. 8.After No. 6 of Fig. 8, again carry out and No. 3, Fig. 7 at Fig. 7 No. 4, No. 5 of Fig. 8, the action of explanation is identical in No. 6 of Fig. 8 action.The 2nd During the action of secondary complete Fig. 8 No. 5, the value of variable C becomes " 3 ".Figure is carried out at the 2nd time During the action of No. 6 of 8, the value of variable C is " 3 ", can carry next paper.Therefore, From the beginning of detecting the rear end of paper P1 from paper by sensor 116, through the predetermined time Afterwards, control portion 101 makes electromagnetic clutch 148 become notconnect state, and make electromagnetism from Clutch 143 becomes connection status.Thus, feed rolls 113 and paper draw in roller 111 to rotating forward Direction rotates, and carries next paper P2.So, control portion 101, by electricity The transmission state of the driving force of magnet clutch 148 and electromagnetic clutch 143 switches over, and controls The conveying timing of paper processed.Further, the value of variable C is reset by control portion 101.

No. 7 expression paper P1 of Fig. 8 are in discharging way, and next paper P2 and feeding The situation that roller 113 abuts.If paper detects the front end of paper P2 by sensor 116, Then notify this situation to control portion 101.Control portion 101 after receiving this notice, if by The time of timing unit timing through the predetermined time, then makes electromagnetic clutch 148 become connection shape State, and make electromagnetic clutch 143 become notconnect state.

Paper P1 is discharged in No. 8 expressions of Fig. 8, and carries the situation of next paper P2. Owing to electromagnetic clutch 148 is connection status, therefore pull-out roll 114 is to the direction of arrow of diagram Rotate, paper P2 is carried.Paper P1 is carried by discharging conveying roller 125, to discharge Paper mounting portion 12 is discharged.

So, according to present embodiment, control portion 101 makes motor 140 revolve to forward direction Turn, proceed by the conveying of the 1st paper supplied from supply position, at the 1st paper generally After passing through the position of feed rolls 113 on transport path 130, utilize electromagnetism clutch 143 from carrying out Driving force switches to, to the state of the transmission of feed rolls 113, the state not carrying out transmitting.It addition, Control portion 101, passes through the position of pull-out roll 114 on usual transport path 130 at the 1st paper After, utilize electromagnetic clutch 148 to cut from being driven the power state to the transmission of pull-out roll 114 It is changed to the state not carrying out transmitting.If it addition, the 1st paper is on usual transport path 130 Be delivered to the position of distributing roller 125, then control portion 101 makes motor 140 revolve to reverse direction Then change the direction of rotation of distributing roller 125, make the 1st paper via collaborative transport path 131 It is delivered to the position of pull-out roll 114.Further, control portion 101 utilize electromagnetic clutch 148 from The state not being driven the power transmission to pull-out roll switches to the state carrying out transmitting, and controls Portion 101 processed makes the rotation of motor 140 stop.Further, during the stopping of motor 140, Control portion 101 inquire to the control portion 181 of image processing system 100 conveying of paper start and The instruction that conveying stops.If obtaining the instruction that the conveying that inquiry result is paper stops, then control Portion 101 processed makes motor 140 standby, until the instruction that the conveying obtaining paper starts.Another Aspect, if obtaining the instruction that the conveying that inquiry result is paper starts, then control portion 101 makes Motor 140 rotates to forward direction, and makes the direction of rotation of distributing roller 125 change.Further, If the position that the 1st paper is by pull-out roll 114, then control portion 101 utilizes electromagnetic clutch 148 switch to, from being driven the power state to the transmission of pull-out roll 114, the shape not carrying out transmitting State, on the other hand, utilizes electromagnetic clutch 143 to be never driven power to feed rolls 113 The state of transmission switches to the state carrying out transmitting, the 2nd paper to be carried after making the 1st paper The conveying opened starts.Further, until the 2nd paper is delivered to row via the reading position of image Go out roller 125 position, by motor 140 carry out rotate forward period, by distributing roller 125 Carry the 1st paper and discharge.

According to present embodiment, selectively rotate to forward direction and reverse direction having In the sheet-conveying device 10 of motor 140, in order to make motor 140 change its rotation side To and when stopping, obtaining the instruction that conveying starts and conveying stops of paper.Thus, it is possible to During rotation in addition to when motor 140 must stop to change its direction of rotation, Suppress to stop its chance rotated owing to stopping instruction from the conveying of image processing system 100 Frequency.Further, since in order to make the direction of rotation of motor 140 be changed to from reverse direction Forward direction and control portion 101 make the timing that the rotation of motor 140 temporarily ceases, and become paper The front end opened is positioned at defeated with top conveying guide part 135 and bottom on usual transport path 130 When sending the sheet transport direction downstream that the linking part 137 of guide part 136 is compared, the most permissible Suppression is when the conveying starting again at paper, and the front end of paper hangs over and causes on linking part 137 Paperboard.Further, since in order to make the direction of rotation of motor 140 just be changed to from reverse direction Turn direction and timing that control portion 101 makes the rotation of motor 140 temporarily cease, become paper Front end be positioned on usual transport path 130 and the sheet transport direction stopped compared with roller 117 During upstream side, therefore when stopping the conveying of paper, paper can be formed and will not sandwich stop roller State between 117 and driven voller 118.Thus, the paper that will block due to paperboard user During taking-up, can save by the trouble stopping that the paper that roller 117 sandwiches takes out by hands operation.

Claims (9)

1. a sheet-conveying device, it is characterised in that have:

1st transport path of thin slice, it is from the beginning of the supply position of supply thin slice, via by image Reading part reads the reading position of the image of this thin slice, until discharging the drain position of this thin slice；

2nd transport path of thin slice, it is from the beginning of the 1st position on aforementioned 1st transport path, Until the 2nd position on aforementioned 1st transport path, the 2nd position compared with the 1st position, It is positioned at the conveying direction upstream side of aforementioned sheet；

Driver element, it selectively rotates to the 1st direction and the 2nd direction and produces driving force；

1st conveying roller, it, in aforementioned 2nd position, utilizes the driving force that aforementioned driver element produces Rotate, and carry aforementioned sheet；

2nd conveying roller, it is on aforementioned 1st transport path, compared with aforementioned 1st position The position of aforementioned conveyance direction downstream side, utilizes the driving force produced by aforementioned driver element to revolve Turn, and carry aforementioned sheet；

Rotating mechanism, regardless of the direction of rotation of aforementioned driver element, it all makes aforementioned 1st defeated Send roller along being delivered to aforementioned from aforementioned 2nd position by aforementioned sheet on aforementioned 1st transport path The direction of rotation of the 1st position rotates；

Acquisition unit, it, from comprising the external device (ED) of aforementioned image reading unit, obtains aforementioned thin The instruction that conveying starts and conveying stops of sheet；And

Control unit, aforementioned driver element is controlled by it,

Aforementioned control unit, makes aforementioned driver element rotate to aforementioned 1st direction, starts from aforementioned The conveying of the aforementioned sheet of supply position supply,

If this thin slice by the position of aforementioned 1st conveying roller, enters on aforementioned 1st transport path And be delivered to the position of aforementioned 2nd conveying roller, then make aforementioned driver element to aforementioned 2nd direction rotation Then change the direction of rotation of aforementioned 2nd conveying roller, if aforementioned sheet is via aforementioned 2nd conveying Path is transported to the position of aforementioned 1st conveying roller, then make aforementioned driver element stop,

In the period that aforementioned driver element stops, if being obtained aforementioned sheet by aforementioned acquisition unit The instruction that conveying stops, then carry out standby, until the instruction that the conveying obtaining aforementioned sheet starts, On the other hand, if obtained the instruction the conveying of aforementioned sheet by aforementioned acquisition unit, then make Aforementioned driver element rotates to aforementioned 1st direction and changes the direction of rotation of aforementioned 2nd conveying roller, After making aforementioned sheet pass through the position of aforementioned 1st conveying roller, by aforementioned 2nd conveying roller conveying And discharge.

Sheet-conveying device the most according to claim 1, it is characterised in that have:

1st guiding parts, it guides the conveying direction of aforementioned sheet along aforementioned 1st transport path；

2nd guiding parts, it is at the aforementioned sheet conveying direction compared with aforementioned 1st guiding parts Upstream side, guides the conveying direction of aforementioned sheet along aforementioned 1st transport path；And

Linking part, it is by aforementioned 1st guiding parts and aforementioned 2nd guiding parts link, so that Aforementioned 2nd guiding parts can rotate to the direction away from aforementioned 1st guiding parts,

Aforementioned control unit, contacts with aforementioned 1st conveying roller at aforementioned sheet, and before this thin slice End is positioned at the aforementioned conveyance direction downstream side compared with aforementioned linking part on aforementioned 1st transport path Time, make aforementioned driver element stop.

Sheet-conveying device the most according to claim 2, it is characterised in that have:

Having the 3rd conveying roller, it is on aforementioned 1st transport path, compared with aforementioned linking part Aforementioned conveyance direction downstream side, and in the aforementioned conveying direction upstream compared with aforementioned 2 conveying rollers Side, the driving force utilizing aforementioned driver element to produce rotates, the 3rd conveying roller and with its phase To opposed roller, carry this thin slice sandwiching the state of aforementioned sheet,

Aforementioned control unit, contacts with aforementioned 1st conveying roller at aforementioned sheet, and before this thin slice End is positioned on the aforementioned conveying direction compared with aforementioned 3rd conveying roller on aforementioned 1st transport path During trip side, aforementioned driver element is made to stop.

4. an image read-out, it is characterised in that have:

Sheet-conveying device described in claim 1；And

Image fetching unit, it reads image from the thin slice carried by aforementioned sheet conveyer device.

5. an image read-out, it is characterised in that have:

Sheet-conveying device described in claim 2；And

Image fetching unit, it reads image from the thin slice carried by aforementioned sheet conveyer device.

6. an image read-out, it is characterised in that have:

Sheet-conveying device described in claim 3；And

Image fetching unit, it reads image from the thin slice carried by aforementioned sheet conveyer device.

7. an image processing system, it is characterised in that have:

Image read-out described in claim 4；And

Image formation unit, it forms the figure read as reading device by earlier figures on the recording medium Picture.

8. an image processing system, it is characterised in that have:

Image read-out described in claim 5；And

Image formation unit, it forms the figure read as reading device by earlier figures on the recording medium Picture.

9. an image processing system, it is characterised in that have:

Image read-out described in claim 6；And

Image formation unit, it forms the figure read as reading device by earlier figures on the recording medium Picture.