CN1941832A - Document or sheet material feeder - Google Patents

Document or sheet material feeder Download PDF

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Publication number
CN1941832A
CN1941832A CNA200610159928XA CN200610159928A CN1941832A CN 1941832 A CN1941832 A CN 1941832A CN A200610159928X A CNA200610159928X A CN A200610159928XA CN 200610159928 A CN200610159928 A CN 200610159928A CN 1941832 A CN1941832 A CN 1941832A
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CN
China
Prior art keywords
file
feeding
gear
roller
along
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CNA200610159928XA
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Chinese (zh)
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CN1941832B (en
Inventor
岩乡利隆
松岛龙一
洞口洋一
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Brother Industries Ltd
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Brother Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2005278966A external-priority patent/JP4207944B2/en
Priority claimed from JP2005282392A external-priority patent/JP4165545B2/en
Priority claimed from JP2005302378A external-priority patent/JP4165550B2/en
Application filed by Brother Industries Ltd filed Critical Brother Industries Ltd
Publication of CN1941832A publication Critical patent/CN1941832A/en
Application granted granted Critical
Publication of CN1941832B publication Critical patent/CN1941832B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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  • Sheets, Magazines, And Separation Thereof (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
  • Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
  • Conveyance By Endless Belt Conveyors (AREA)

Abstract

Feeding systems for documents or other sheet materials include: (a) an inlet; (b) an outlet; (c) a feed path extending between the inlet and outlet; and (d) a feed system that moves materials along the feed path. The systems further may include: (e) a bidirectional feed path extending from the feed path; (f) a supply system that moves materials to the feed path; (g) a bidirectional drive system that moves materials along the bidirectional feed path; and/or (h) a bidirectional feed path access control system. Drive systems may be provided for driving the feed system and at least one of the supply system, the bidirectional drive system, and/or the access control system such that operation of the feed system is independent of operation of the other systems and/or such that a single motor may be used to drive any or all of the systems.

Description

File or sheet feeder
The cross reference of related application
The application requires the priority of following Japanese patent application: (a) the Japanese patent application No. 2005-278076 that submitted on September 26th, 2005; (b) the Japanese patent application No. 2005-278966 that submitted on September 26th, 2005; (c) the Japanese patent application No. 2005-282392 that submitted on September 28th, 2005; (d) the Japanese patent application No. 2005-302378 that submitted on October 17th, 2005.Quote these Japan as a reference at this at the full content of first to file.
Technical field
The present invention relates to the method for the feeder and this material of feeding of file or other plate-shaped material.
Background technology
Comprise photocopier, scanner and have copy function and the multi-function device of scan function in interior image read-out, file is fed into the Automatic Document Feeder (" ADF ") of paper discharge tray from paper feeding plate by the feeding path, be widely known by the people.In addition, in order to read the file that is printed on first surface and the second surface, by the front-end and back-end of upset file come the feeding file in case carry out two-sided read send the original text device, also be widely known by the people.
Feeding path in the existing file feeder that can two-sidedly read has been shown among Figure 33.As shown in the figure, file P is placed on the paper feeding plate 100, first surface (first page) up.File P is fed in the feeding path 102 by pickup roller 101.In feeding path 102, file P is by intake roller 103 feed-ins of appropriate setting, and when file P passes when reading position X, the first surface of file P is read by for example image read-out such as CCD or CIS.When sensor arrives the rear end of file P, run through the first surface of file P, exit roller 104 stops, and the rear end of file P is clamped.
Then as shown in figure 34, when exit roller 104 reverse rotations, file P is fed in the path 105 of turning back.The upstream side that file P reads position X from the path 105 of turning back towards feeding path 102 advances.Therefore the front-end and back-end of file P are reversed, and file P is reversed.Then, file P is by intake roller 103 feedings, passes when reading position X at file P, and its second surface is read by image read-out.When sensor during to the rear end of file P, the second surface of file P is current to run through, and exit roller 104 stops once more, and the rear end of file P is clamped, then the file P feed reversing path 105 of turning back.When file P when the path 105 of turning back enters into feeding path 102 once more, its front-end and back-end are reversed once more, that is to say first surface towards reading position X, file P is reversed once more.File P is fed on the feeding path 102 then and is discharged on the paper discharge tray 106, and first surface down.Thereby first and second surfaces of file P are read, and file P is discharged on the paper discharge tray 106 with the order identical with original document P, is placed on the paper feeding plate 100 with original order.
The power rotation that pickup roller 101, intake roller 103 and exit roller 104 utilize motor to transmit.Pickup roller 101 and intake roller 103 are always along a direction rotation, promptly along the direction that file P is fed into its downstream from the upstream side in feeding path 102.Exit roller 104 rotates so that along the path 105 feeding file P backward that turns back with forward and reverse both direction.For example, as shown in figure 34, when file P being clamped between intake roller 103 and the exit roller 104, the paper feed direction of intake roller 103 should be complementary with the paper feed direction of exit roller 104.In addition, place between the intake roller 103 that reads the positive downstream of X, position and between the exit roller 104 time, the paper feed direction of intake roller 103 should be complementary with the paper feed direction of exit roller 104 when file P is clamped in.Therefore, for example, when being respectively when driving intake roller 103 and exit roller 104 motor being set, intake roller 103 must be in the predetermined direction of rotation that regularly change exit roller 104 always along a direction rotation.
Summary of the invention
Each side of the present invention relates to the system and method that is used for moving or carrying file or other plate-shaped material, for example is included in various files or paper treatment system in the imaging device.The feeder system of at least some embodiment according to the present invention can comprise: (a) inlet; (b) outlet; (c) the feeding path between extending in inlet and exporting; (d) along the feed system of feeding path move or other material.This feed system can also comprise one or more in the following parts: (e) from two-way feed path portion that a feeding path part is extended; (f) with file or other material from or move to the feed system in feeding path by inlet; (g) bi-directional drive system moves file or other material along two-way feed path portion; And/or (h) two-way feed path metering-in control system, be used for control to enter two-way feed path portion.Drive system can be set, drive feed system and one of feed system, bi-directional drive system and/or two-way feed path metering-in control system at least.Drive system can be constructed, programmed and/or revises so that control feed system and one of feed system, bi-directional drive system and/or two-way feed path metering-in control system at least, so that the operation of feed system does not rely on the operation of other system at least in some cases and/or so that monomotor can be used for driving all systems.
Others of the present invention for example relate to the method for in such as the various files of imaging device or paper treatment system feeding file or other plate-shaped material.This method can comprise: (a) receive the input of indication feeding pattern, wherein feeding pattern comprises single face feeding pattern and two-sided feeding pattern; (b) according to the feeding pattern of indicating, along feeding path feeding file or other material between inlet and the outlet.In the method, when indication single face feeding pattern, file or other material can pass the feeding path in a continuous manner, and file or other material can pass the feeding path in discontinuous mode when the two-sided feeding pattern of indication.When the two-sided feeding pattern of indication, the method for at least some embodiment can also comprise along two-way feed path portion's move or other material according to the present invention, and file or other material for example overturn.Can use one or more motor along feeding path drives file or other material.In at least some embodiment, monomotor can rotate and be used for along the intake roller of first direction of rotation along feeding path move or other material, and with the irrelevant to rotation direction of motor.In addition, this same independent motor can be along the feeding path and along other parts (for example along feed path or two-way feed path portion) move or other material of whole system.If desired, this same independent motor can also be used to control entering of two-way feed path portion with additional mode or optional mode.
Description of drawings
Below with reference to each example structure and accompanying drawing, describe each side of the present invention in detail, wherein:
Fig. 1 represents the perspective view of image read-out outward appearance according to an embodiment of the invention;
Fig. 2 is the side sectional view of image read-out internal structure shown in Figure 1;
Fig. 3 is expression and the block diagram of an example structure of the common controller that uses of the device of at least some embodiment according to the present invention;
Fig. 4,5,7 and 8 shows the structure of first actuating unit that may use according to some embodiments of the invention;
Fig. 6 shows the epicyclic gearing and the engaging mechanism that may use according to some embodiments of the invention;
Fig. 9 shows the structure of second actuating unit that may use according to some embodiments of the invention;
Figure 10 to 12 shows the structure of the 3rd actuating unit that may use according to some embodiments of the invention;
Figure 13 to 15 shows the structure of the 4th actuating unit that may use according to some embodiments of the invention;
Figure 16 to 17 shows the structure of the 5th actuating unit that may use according to some embodiments of the invention;
Figure 18 is the flow chart according to one embodiment of the invention performed step in the single face read mode;
Figure 19 is the flow chart according to one embodiment of the invention performed step in two-sided read mode;
Figure 20 is the sequential chart of a single face read mode embodiment;
Figure 21 is the sequential chart of a two-sided read mode embodiment;
Figure 22,23 and 25 to 27 is schematically illustrated in according to the present invention the various image read operations among the single face read mode operation embodiment;
An embodiment of separate roller when Figure 24 shows idle running;
Figure 28 to 32 schematically shows the various image read operations in two-sided read mode operation embodiment according to the present invention; With
Figure 33 to 34 schematically shows existing double-side file reading system.
Embodiment
I. according to the summation of the system and method for part embodiment of the present invention at least
In the following description, between various integrally-built each parts, have various connections.The reader should be appreciated that, unless otherwise stated outside, these connections generally speaking can be direct or indirect, this specification does not limit this.
Each side of the present invention for example relates to the system and method that in various files or sheets processing system (for example in the imaging device of photocopier, printer, facsimile machine, multi-function device etc.) moved or transmitted file or other sheet material.According to the feeder of at least some embodiment of the present invention, can comprise: (a) inlet; (b) outlet; (c) the feeding path of between inlet and outlet, extending; (d) be used for along the feed system of feeding path move or other material.Can also comprise following one or more to the feeder of small part embodiment according to the present invention: (e) from two-way feed path portion that the part in feeding path is extended; (f) feed system moves to file or other material the feeding path from inlet or by inlet; (g) bi-directional drive system is along two-way feed path portion's move or other material; And/or (h) two-way feed path metering-in control system, be used for controlling entering of two-way feed path portion.Drive system can be set, be used for driving in feed system and feed system, bi-directional drive system and/or the two-way feed path metering-in control system at least one.Drive system can be fabricated, programme and/or the transformation of the way so that at least one in control-driven system and feed system, bi-directional drive system and/or the two-way feed path metering-in control system, so that the operation of feed system is irrelevant with the operation of other system at least in some cases.
In the feeder structure according at least some embodiment of the present invention, drive system comprises motor, and how the direction of rotation of motor all can rotate the intake roller that is included in the feed system along first direction of rotation.And at least some example structure, drive system comprises monomotor, is used to drive feed system and one of feed system, bi-directional drive system and/or two-way feed path metering-in control system (be in some cases all above-mentioned) at least.
The feed system of at least some embodiment can comprise various scan pattern according to the present invention, for example single-sweep pattern and duplex scanning pattern.Feed system can be under the duplex scanning pattern with discontinuous mode move or other material by the feeding path, but also can under the single-sweep pattern with continuous, non-stop mode move or other material on the feeding path.
Others of the present invention relate to for example method of feeding file or other flaky material in various files or sheets processing system (as imaging device).This method can comprise: (a) receive the input of indication feeding pattern, wherein obtainable feeding pattern comprises single face feeding pattern and two-sided feeding pattern at least; (b) according to the feeding pattern of indicating, along feeding path feeding file or other sheet material between inlet and the outlet.In the method, when indication single face feeding pattern, file or other sheet material move in the feeding path in a continuous manner, and when the two-sided feeding pattern of indication, file or other sheet material are mobile in the feeding path in discontinuous mode.When the two-sided feeding path mode of indication, this method can also comprise along two-way feed path portion's move or other material so that for example it is turned upside down and/or its front-end and back-end are put upside down.
Can use one or more motor along feeding path move or other material.In the method for at least some embodiment according to the present invention, how its direction of rotation of monomotor all can be used for along a plurality of intake rollers of feeding path move or other material along the rotation of first direction of rotation.Additionally or alternatively, according at least some embodiment of the present invention, this same monomotor can be along the feeding path with along other parts move or other material of whole feeder system, for example along two-way feed path portion and/or along the feeding sheet materials path entry position of supply tray or feeding path (for example from).
The method of at least some embodiment according to the present invention, can also comprise according to the input indication and select single face feeding pattern or selected two-sided feeding pattern, the two-way feed path portion that control is extended from the feeding path (for example enters, when the two-sided feeding pattern of indication, allow to enter two-way feed path portion, when indication single face feeding pattern, do not allow to enter into the two-way feed path).If desired, can enter employed structure in the two-way feed path driving under the actuating force effect of monomotor in employed structure in the feeding path zone of other indication (perhaps along) feeding file or other material with in control.
Consider and above-mentioned various embodiments of the present invention and each side summarized that the back will be described each specific embodiment according to the feeder system and method for the embodiment of the invention in detail.
II. according to the detailed description of embodiments of the invention system and method
Describe each embodiment of the present invention below with reference to the accompanying drawings in detail.Though of the present inventionly mainly be described with term " file " or paper spare feed system or method, but those of ordinary skill in the art should know each side of the present invention and feature and certainly be applied to widely in the feed system and method, comprise other flaky material of feeding, for example plastics (for example lantern slide), fiber material, metal, flexible sheet material or the like.
At least the described image read-out 1 of part embodiment according to the present invention has been shown among Fig. 1, and Fig. 2 shows the main internal structure of image read-out 1.Image read-out 1 can be arranged to be used for reading the cis of file, for example photocopier, facsimile machine, scanner, multi-function device (MFD) or the like.
As depicted in figs. 1 and 2, the image read-out 1 of present embodiment is provided with as the file mounting table 2 of flat bed scanner (FBS) and comprises the file lid 4 of file automatic feeder 3 (ADF).File lid 4 is connected on the file mounting table 2, and the hinge by the back can open and close file lid 4.
Guidance panel 5 is arranged on the front of file mounting table 2.Guidance panel 5 comprises various keys 11 and LCD (LCD) 12.The user is by using the instruction of guidance panel 5 input expections, and for example expression begins to read " beginning " of file and " stopping " that indication stops to read.Can be by pressing key 11 these instructions of input.Image read-out 1 can also be operated under the instruction by the printer that is connected with computer or scanner drive transmission except operating by the instruction of guidance panel 5 input.
As shown in Figure 2, platen glass 20,21 is arranged in file mounting table 2 end faces and covers 4 relative positions with file.When covering 4 when opening file, platen glass 20,21 is as the end face of file mounting table 2 and expose.When close file covers 4, comprise that the end face of the file mounting table 2 of platen glass 20,21 is covered fully.Image fetching unit 22 is structured in or otherwise is connected in the file mounting table 2 so that towards platen glass 20,21.
When image read-out 1 is used as FBS, file is placed on the platen glass 20.Platen glass 20 is for example made by transparency glass plate.The central portion at file mounting table 2 tops is provided with opening, and platen glass 20 exposes by this opening.The zone that platen glass 20 exposes from opening is the scanning area among the FBS.
When using the ADF3 of image read-out 1, platen glass 21 is positioned at and reads the position.Platen glass 21 is for example made by transparency glass plate.The position of reading of file mounting table 2 is provided with opening, and platen glass 21 exposes by this opening.The platen glass 21 that from opening, exposes according to image fetching unit 22 along main read direction length extend back or extend along the depth direction of image read-out 1.
Positioning element 23 is inserted between platen glass 20 and 21.The positioning element 23 of present embodiment is the long flat plate that for example extends back with same degree with platen glass 21 or extend along image read-out 1 depth direction.Positioning element 23 can be used as reference point, is used at FBS file being placed on platen glass 20.Thereby, can have the centre position that shows various different document sizes and the mark of two side positions on the end face of positioning element 23, letter size (letter size) for example, A4 and B5.The end face of positioning element 23 can also be provided with guide surface, catches the front end of the file that moves along platen glass 21 and it is turned to, and therefore file is sent back among the ADF3.
Image fetching unit 22 is imageing sensors, is mapped on the file by platen glass 20 and 21 illumination with light source, will focus on the photoreceptor and with reverberation from the light that file reflects and convert the signal of telecommunication to.As image fetching unit 22, can use contact-type image sensor (CIS), charge coupled device (CCD) imageing sensor, and/or the imageing sensor of other desired type.Image fetching unit 22 is arranged on the following of platen glass 20,21 so that for example can move back and forth by the belt gear as sweep mechanism.For example, the actuating force from carriage motor can be passed to image fetching unit 22, can be parallel to platen glass 20,21 then and move back and forth image fetching unit 22.
The file of present embodiment device 1 lid 4 is provided with ADF3, from paper feed pallet 30 (file placement section) by file feeding path 32 with the file continuous feed to paper delivery pallet 31 (file discharge portion).In utilizing the feeding process of ADF3, when file pass on the platen glass 21 read the position time, be arranged on the image on image fetching unit 22 scanning documents of platen glass 21 belows.
As illustrated in fig. 1 and 2, file lid 4 is provided with paper feed pallet 30 and paper delivery pallet 31, and the two vertically is arranged in this example structure so that paper feed pallet 30 is placed on the paper delivery pallet 32.The file that is read by ADF3 is placed on the paper feed pallet 30.If desired, stacked documents to be read can be placed on the input pallet 30, first placement that faces up, front end is inserted in the file feeding path 32.Side by downward bending feeding pallet 30 facing devices 1 back is provided with protection walls 26 in this embodiment.The end face of the bottom threaded file lid 4 of protection walls 26.File on the protection walls 26 protection paper delivery pallets 31 can not cover 4 at file and slip out (and landing is in back of image read-out 1) when opening with respect to file mounting table 2 from it.Notch 27 is formed on the part of ADF3 housing, is positioned at the bottom of paper feed pallet 30, the front of facing device 1.By this notch 27, the user can see the file that is discharged on the paper delivery pallet 31 from installing 1 front.Undersized file can be hidden by paper feed pallet 30 fully, therefore is difficult to confirm from the front of image read-out 1 existence of this small documents for the user.Yet by notch 27 is set, the space between paper feed pallet 30 and the discharge tray 31 is opened wide, so especially to checking and confirming that existing of small-sized document is highly beneficial.
Discharge tray 31 in this example structure is arranged in below the paper feed pallet 31, vertically leaves from paper feed pallet 30, and paper delivery pallet 31 forms with the end face of file lid 4 is whole.Experienced the file of fetch program and discharged from ADF3, and maintenance separates with the stacked documents (if there is) on the paper feed pallet 30, and remain on the paper delivery pallet 31, its first surface is downward.Can be formed on the sidepiece 28 of the paper delivery pallet 31 of device 1 front and back, be inclined upwardly towards the both sides of paper delivery pallet 31.When from paper delivery pallet 31, removing the file of discharging, can push file from the top, and slide along the inclined surface of sidepiece 28.Thereby sidepiece 28 is convenient to remove file from discharge tray 31.
As shown in Figure 2, file feeding path 32 is essentially " U " shape shape of level in vertical cross section, is formed among the ADF3 so that connect paper feed pallet 30 and paper delivery pallet 31 by the position of reading on the platen glass 21.File feeding path 32 is formed continuously by various structure members, for example ADF main body, guide plate and lead rib, and feeding path 32 has the width that file can pass.Paper feed pallet 30 and paper delivery pallet 31 arrange that vertically file feeding path 32 forms so that connect pallet, " U " shape of basic one-tenth level in vertical section.Utilize this structure, ADF3 is reducing on the width and is therefore reducing on whole dimension.
File feeding path 32 has " U " shape shape of level, extend to file from paper feed pallet 30 and cover an end (left side Fig. 2) of 4, be bent downwardly so that reverse its paper feed path, arrive reading a little on the platen glass 21, and extend to paper delivery pallet 31 from reading the position.File feeding path 32 mainly is made of three parts: top 32A, bend 32B and bottom 32C.Top 32A and bottom 32C are the straight line portioies up and down of " U " shape shape, and bend 32B crooked connects top 32A and bottom 32C to connect ground.File feeding path 32 is used to use ADF3 that file is carried out single face to read with two-sided and read.
File feeding path 32 comprises that the file that will supply with the supply part in file feeding path 32 from the file of input pallet 30 and be used for supplying with file feeding path 32 is fed into the infeed mean on the output pallet 31.In this example structure, on file feeding path 32, supply part is meant pickup roller 33 and separate roller 34, and infeed mean is meant intake roller 35A, 35B, 35C and 35D and compresses the hold-down roller 37 that contacts with them as shown in Figure 2.Certainly can also use other supply part and infeed mean structure in protection scope of the present invention not breaking away from.Transmission of power from motor 67 (Fig. 3, drive source) is given each driven roller that constitutes an infeed mean part.The back will be described the power drive mechanism that is used for various rollers in further detail.
As shown in Figure 2, pickup roller 33 and separate roller 34 are arranged near the 32 upstream sides of file feeding path.The pickup roller 33 of present embodiment structure can be rotatably set in 29 1 ends of arm, and (Fig. 9) supported by the axle 111 that supports separate roller 34 in the bottom of arm 29.Separate roller 34 leaves pickup roller 33 along the paper feed direction and rotatably is provided with, so that contact with the opposite face in file feeding path 32.To pass to pickup roller 33 and separate roller 34 that rotation drives from the actuating force of motor 67.To further pass to the arm 29 that vertically moves from the actuating force of motor 67.Pickup roller 33 in the present embodiment and separate roller 34 have the diameter of same size, are driven with identical peripheral speed.Can on the opposite location of separate roller 34 separating pad is set in case with the roll surface face contact of separate roller 34 and under rubbing action separate file.
Intake roller 35A, 35B, 35C and 35D are arranged on the diverse location in file feeding path 32.In this embodiment, intake roller 35A is arranged in the positive downstream of separate roller 34, intake roller 35B is arranged in the top 32A in file feeding path 32, intake roller 35C is arranged in the bottom 32C in file feeding path 32, read the positive upstream side of position, intake roller 35D is arranged in the bottom 32C in file feeding path 32, reads the positive downstream of position.The layout of intake roller 35A, 35B, 35C and 35D just for illustrative purposes, the quantity of intake roller and be arranged in necessity and can change.
Towards each intake roller 35A, 35B, 35C and 35D hold-down roller 37 is set.Each hold-down roller 37 is by resiliency urged (for example using spring), and with the roll surface face contact of its each intake roller 35A, 35B, 35C and 35D.When each intake roller 35A, 35B, 35C and 35D rotation, its each hold-down roller 37 rotates simultaneously.In this way, file face contact each intake roller 35A, 35B, 35C and 35D, thus its revolving force is transmitted or move.
Exit roller 36 is arranged near the downstream in file feeding paths 32.As the situation of intake roller 35A, 35B, 35C and 35D, will pass to exit roller 36 from the actuating force of motor, exit roller 36 rotations.Be provided with hold-down roller 37 equally towards exit roller 36, this hold-down roller 37 promote by spring and with exit roller 36 face contacts.
Two-way feed path 39 (being also referred to as " turning back " path) is connected the link position 38 among the bottom 32C in file feeding path 32.Two-way feed path 39 is used for two-sided reading, and it is designed to the front-end and back-end of having scanned first file are put upside down, and delivers to the upstream side that reads the position again from the file in the downstream of reading the position.Two-way feed path 39 tilts to extend up to the upside of importing pallet 30 from link position 38, and is crossing with the top 32A in file feeding path 32.File from crossover location 40 feedings in top 32A and two-way feed path 39 turns back to file feeding path 32.
The end 41 in the two-way feed path 39 in this example structure, open towards the end face of ADF3.File support portion 42 forms to input pallet 30 continuously from the end 41 in two-way feed path 39.File support portion 42 is designed to support the file of discharging from the end 41 in two-way feed path 39, the loam cake 6 (Fig. 1) of pickup roller 33 and separate roller 34 top ADF in the formation present embodiment structure.Loam cake 6 forms the whole ADF3 that comprises pickup roller 33 and separate roller 34 with covering, and loam cake 6 can open and close.In the present embodiment structure, constitute the file support portion 42 of loam cake 6, extend towards input pallet 30 from the end 41 of pickup roller 33 tops.Thereby, in two-sided reading, enter into two-way feed path 39 and, be supported on the file support portion 42 from terminal 41 files that stretch out ADF3, can't drag down to the downstream of the stranding paper position that is placed on input pallet 30.In addition, by opening loam cake 6, file feeding path 32 and two-way feed path 39 parts among the ADF3 are exposed, and can for example clear up maintenance works such as holding paper.
Two-way intake roller 43 is arranged in the positive downstream towards terminal 41 crossover location 40, two-way feed path 39 in the present embodiment structure.In the time will passing to two-way intake roller 43 from the actuating force of motor 67, two-way intake roller 43 is along forward and oppositely both direction rotation.Hold-down roller 44 is arranged towards two-way intake roller 43.Hold-down roller 44 for example promotes by the spring on it so that the roll surface of the two-way intake roller 43 of face contact, and follows the rotation of two-way intake roller 43 and rotate.Utilize hold-down roller 44 that file is born against on two-way intake roller 43, and the rotation of two-way intake roller 43 is passed to file.Two-way intake roller 43 and hold-down roller 44 are as the two-way feed parts along both direction feeding file.
In the present embodiment structure, be connected to the two-way feed path 39 of reading the link position 38 on the downstream, position in file feeding path 32, intersect with the top 32A in file feeding path 32, two-way intake roller 43 is arranged on towards terminal 41 crossover location 40.Yet, if necessary or need, also can change the feeding route in two-way feed path 39, for example as long as two-way feed path 39 is connected to the ad-hoc location on the file feeding path 32 so that will put upside down and file turned back to the upstream side that reads the position from the front-end and back-end of the file that reads the feeding of downstream, position.
As shown in Figure 2, be used for file is directed to guiding trap 46 and 47 in the appropriate feeding path, be arranged on the crossover location 40.Guiding trap 46 can rotate at its head lamp brush guard pivot.Guiding trap 46 has roughly triangular shaped, and its end reaches crossover location 40.Though in Fig. 2, only show a guiding trap 46, also several guiding traps 46 can be set along the width interval in file feeding path 32 if desired, these a plurality of guiding traps 46 are pivoted together.
Guiding trap 46 in this example structure pivoted that can make progress from position as shown in Figure 2.Adjust guiding trap 46 so that it for example when the guiding parts in contact file feeding path 32 or two-way feed path 39, should not rotate from position as shown in Figure 2.When the trap 46 that will lead is placed on as shown in Figure 2 position, at crossover location 40, file feeding path 32 extends to from input pallet 30 (right side the figure) and reads position (left side among the figure), but closes the feeding path of the link position 38 (downside the figure) from file feeding path 32 to two-way feed path 39.Utilize this structure, the file that arrives crossover locations 40 from the input pallet 30 in file feeding path 32 can forward the position of reading in file feeding path 32 to, and is adjusted to the link position 38 that forwards two-way feed path 39 to.In addition, arrive the file of crossover location 40, can forward the position of reading in file feeding path 32 to, and be adjusted to the link position 38 that forwards two-way feed path 39 to from the end 41 (upside the figure) in two-way feed path 39.
When along among the figure upward when rotating guiding trap 46, extend to terminal 41 path from the link position 38 in two-way feed path 39, and close to the feeding path of reading the position in file feeding path 32 from the link position 38 in two-way feed path 39.Utilize this structure, can arrive the end 41 in two-way feed path 39 from the link position 38 in two-way feed path 39 to the file of crossover location 40, adjust the position of reading that it forwards file feeding path 32 to there.
When file contact guidance trap 46, change the feeding paths by guiding trap 46.Biasing guiding trap 46 makes it be arranged in as shown in Figure 2 position (for example under himself gravity or for example the elastic force effect at elastomeric elements such as springs under) in this example structure.The file that is fed into crossover location 40 from link position 38 on two-way feed path 39 contact with guiding trap 46, lead trap 46 along among the figure upward to rotation.On the contrary, when file during from crossover location 40 that terminal 41 are fed on the two-way feed path 39, contact guidance trap 46.Yet, so that it can not move down from position as shown in Figure 2 the time, guides to the top 32A in file feeding path 32 by guiding trap 46 with file, and arrive once more and read the position when adjusting guiding trap 46.Guiding trap 46 can have such shape, even guiding trap 46 is by contacting with the file that is fed into crossover location 40 from link position 38 on two-way feed path 39 and changing its position simply, the file that will be fed into crossover location 40 from the end 41 in two-way feed path 39 is directed to file feeding path 32.Trap 46 is designed to change its position by the contact file as long as will lead, and then do not need power with motor 67 (or other power source) to offer guiding trap 46 and change its position, thereby guiding trap 46 can have simple structure.Certainly, if desired, can connect selectively mobile guide trap 46 by power not breaking away from protection scope of the present invention.
Guiding trap 47 can rotate at its head lamp brush guard pivot.Guiding trap 47 has roughly triangular shaped, and its end reaches crossover location 40.Though in Fig. 2, only show a guiding trap 47, also several guiding traps 47 can be set along the width interval in file feeding path 32 if desired, these a plurality of guiding traps 47 are pivoted together.
The rotation that can make progress from position shown in Figure 2 of guiding trap 47.Adjust guiding trap 47 so that it for example when the guiding parts with file feeding path 32 or two-way feed path 39 contacts, can not move right from position as shown in Figure 2.When the trap 47 that will lead is placed on as shown in Figure 2 position, extend to the feeding path of reading the position in file feeding path 32 from the end 41 in two-way feed path 39, and close to the feeding path of the input pallet 30 in file feeding path 32 from the link position 38 in two-way feed path 39.Therefore, 39 ends 41 reach the file of crossover location 40 from the two-way feed path, can forward the position of reading in file feeding path 32 to, and are adjusted and make and can not forward input pallet 30 to.In addition, arrived the file of crossover locations 40 from the link position 38 in two-way feed path 39, can forward the end 41 in two-way feed path 39 to, and be adjusted and make it can not forward the input pallet 30 in file feeding path 32 to.
When guiding trap 47 when upwards rotate position as shown in the figure, file feeding path 32 is connected to from input pallet 30 and reads the position, closes from the feeding path of input pallet 30 39 ends 41 to the two-way feed path in file feeding path 32.Therefore, reached the file of crossover location 40 from the input pallet 30 in file feeding path 32, can forward the position of reading in file feeding path 32 to, and be adjusted to and make it can not forward the end 41 in two-way feed path 39 to.
When file contact guidance trap 47, change the feeding paths by guiding trap 47.Biasing guiding trap 47 makes it for example under himself gravity or for example under the thrust of elastomeric elements such as spring, is arranged in position as shown in Figure 2.The file of input pallet 30 feedings in file feeding path 32 contacts with guiding trap 47, so that guiding trap 47 rotates along the direction that makes progress among the figure.When file when the link position 38 in two-way feed path 39 arrives crossover locations 40 and contacts with the trap 47 that leads, file guides and forwards to the end 41 in two-way feed path 39 by guiding trap 47, because the trap 47 that leads is adjusted so that it can not move right from position as shown in Figure 2.Guiding trap 47 can have such shape, even guiding trap 47 is by contact with the file that is fed into crossover location 40 from input pallet 30 and change its position simply, and guide the file that on two-way feed path 39, is fed into crossover location 40 towards the end 41 in two-way feed path 39 from link position 38.Trap 47 is designed to change its position by contact from the file of importing pallet 30 as long as will lead, then do not need power with motor 67 (or other power source) to offer guiding trap 47 and change its position, thereby guiding trap 47 can have simple structure.Certainly, if desired, can connect selectively mobile guide trap 47 by power not breaking away from protection scope of the present invention.
As shown in Figure 2, guiding trap 50 is arranged on the link position 38.Arrange that guiding trap 50 is so that its rotated position that can intersect in file feeding path 32 and two-way feed path 39.In the time will giving guiding trap 50 from the transmission of power of motor 67, guiding trap 50 moves down from position as shown in Figure 2.Adjust guiding trap 50 so that its guiding parts with file feeding path 32 or two-way feed path 39 when contact, upwards rotates from position as shown in Figure 2, rotate file is directed to two-way feed path 39 and further downward.When the trap 50 that will lead was placed on as shown in Figure 2 position, file feeding path 32 was from reading the output pallet 31 (right side among the figure) that position (left side among the figure) extends to link position 38.Thereby, pass the file that reads the position and be guided through the bottom 32C in file feeding path 32 towards output pallet 31.When guiding trap 50 when as shown in Figure 2 position rotates, 39 extend from the downstream of reading the position of the bottom 32C in file feeding path 32 to the two-way feed path in the feeding path.By this path, passed the file that reads the position and be directed in the two-way feed path 39.Arrange that in this way guiding trap 50 is to be directed to file at link position 38 in output pallet 31 or the two-way feed path 39.Though in Fig. 2, only show a guiding trap 50, also several guiding traps 50 can be set along the width interval in file feeding path 32 if desired, these guiding traps 50 can rotate together.
As shown in Figure 2, can be provided for detecting a plurality of transducers that file transmits along file feeding path 32 and two-way feed path 39.In the structure of illustrated embodiment, file feeding path 32 comprises first front sensor 52 and second front sensor 53 that lays respectively on separate roller 34 upstream sides and the downstream and the back transducer 54 that reads the positive upstream side in position.Two-way feed path 39 comprises the two-way paper-in sensor 55 between link position 38 and the crossover location 40.Though in an illustrated embodiment; these transducers are so-called optical transducers; detect on present file feeding path 32 or the two-way feed path 39 action, in the combination that does not break away from the transducer or the dissimilar sensor that can also use other type in protection scope of the present invention as the sensing element of the Photo Interrupter of on/off.
In the time of in file being placed on input pallet 30, open first front sensor 52.By on/off first front sensor 52, can detect in the input pallet 30 whether have file.Second front sensor 53 is arranged in separate roller 34 positive downstreams, and is configured to detect by on/off the front-end and back-end of the file of feeding in file feeding path 32.For example, after second front sensor 53 detects the rear end of file, for example can utilize the step number of encoder or motor 67, determine the position of front-end and back-end on file feeding path 32 of file by the revolution of monitoring intake roller 35A, 35B, 35C and 35D.
Back transducer 54 is arranged in the positive upstream side that reads the position, and is configured to detect by on/off the front-end and back-end of the file of feeding in file feeding path 32.After transducer 54 detects the front end or rear end of file, for example utilize the step number of encoder or motor 67 in the back, determine by the revolution of monitoring intake roller 35A, 35B, 35C and 35D whether the front end of file or rear end have arrived and read the position.Signal controlling image fetching unit 22 reading images based on back transducer 54.Begin reading images when reading the position when the front end of file has arrived, finish when reading the position when the rear end has arrived.
Two-way paper-in sensor 55 is arranged between the crossover location 40 in link position 38 and two-way feed path 39, and is configured to detect the front end or the rear end of the file of feeding in two-way feed path 39.For example, after two-way paper-in sensor 55 detects the rear end of file, for example utilize the step number of encoder or motor 67, determine that by the revolution of monitoring intake roller 35A, 35B, 35C and 35D whether the rear end of file is by crossover location 40.Two-way paper-in sensor 55 is arranged in the position with respect to the relatively more close two-way intake roller 43 in upstream side place of direction of feed.Thereby, can improve the precision that detects the file rear end.
Fig. 3 shows an example structure of the controller 60 that can be used for image read-out 1.The controller 60 of this embodiment is not only controlled the operation of ADF3, also controls entire image reading device 1.Controller 60 is configured to mainly comprise the microcomputer of CPU61, ROM62, RAM63 and EEPROM (Electrically Erasable Read Only Memory) 64, and is connected to ASIC (application-specific integrated circuit (ASIC)) by bus 65.
The ROM62 storage is used to control the various programs of image read-out 1 and ADF3 operations.RAM63 is used for the storage area or the working region of data of executive program as temporary transient storage CPU61.Even EEPROM64 is the storage area that is used to store various settings that also should keep and sign when cutting off the electricity supply.
ASIC66 is in accordance with the order of CPU61, produces phase excitation and thinks motor 67 energisings, and signal is offered the drive circuit 68 of motor 67, be motor 67 energisings by drive circuit 68, and controls the rotation of motor 67.The motor 67 of present embodiment can be supplied with pickup roller 33, separate roller 34, intake roller 35A, 35B, 35C and 35D, exit roller 36, two-way intake roller 43 and guiding trap 50 with actuating force along forward and reverse rotation.Motor 67 in the present embodiment structure is the unique actuating forces among the ADF3.
Use drive circuit 68 drive motors 67.The output signal that drive circuit 68 receives from ASIC66, and produce the signal of telecommunication with turning motor 67.Receive the signal of telecommunication, motor 67 rotates along a direction, the revolving force of motor 67 passes to pickup roller 33, separate roller 34, intake roller 35A, 35B, 35C and 35D, exit roller 36, two-way intake roller 43 and guiding trap 50 by power drive mechanism 70,110,120,150,170, and the back can be described in further detail.
ASIC66 is connected on the image fetching unit 22, reads and utilize ADF3 to be fed into to read locational document image.Image fetching unit 22 reads image on the file according to being stored in control program among the ROM62.The driving mechanism (not shown) that moves back and forth image fetching unit 22 with several operator schemes is also operated under the output signal by ASIC66.
First front sensor 52, second front sensor 53, back transducer 54 and two-way paper-in sensor 55 are connected on the ASIC66.CPU61 receives the on/off signal from these transducers, and the specific output signal of indication ASIC66 output, and according to the control program actuating motor 67 and the image fetching unit 22 that are stored among the ROM62.
ASIC66 is also connected to and rubs with the hands on paper solenoid 88 and two-way (or " turning back ") solenoid (" SB solenoid ") 161.CPU61 indication ASIC66 is at given timing output signal output and start stranding paper solenoid 88 and SB solenoid 161.
The back describes from motor 67 to pickup roller 33, the power drive mechanism of separate roller 34, intake roller 35A, 35B, 35C and 35D, exit roller 36, two-way intake roller 43 and guiding trap 50.Separate roller 34, intake roller 35A, 35B, 35C and 35D, exit roller 36, two-way intake roller 43 and guiding trap 50 extend along the width in file feeding path 32.Separate roller 34, intake roller 35A, 35B, 35C and 35D, exit roller 36, two-way intake roller 43 and guiding trap 50 are arranged in 32 width of file feeding path on separately the axle.Each roller can in axial direction be provided with along its whole length, and/or each axle can at interval and coaxially be provided with a plurality of rollers along file feeding path 32 width.The axle and the roller of any amount and combination can be set in protection scope of the present invention.
As shown in Figure 1, in the present embodiment structure, be arranged on file and cover ADF3 on 4 end faces, comprise file feeding path 32 and each roller.Motor 67 and give the power drive mechanism of each roller with transmission of power all is contained in the housing of ADF3.Motor 67 and power drive mechanism are arranged on the end of ADF3 with respect to file feeding path 32.One end of each of separate roller 34, intake roller 35A, 35B, 35C and 35D, exit roller 36, two-way intake roller 43 and guiding trap 50 is provided with driven gear.In the time will passing to each driven gear by its each power drive mechanism from the actuating force of motor 67, each roller is driven.In this example structure, motor 67, each power drive mechanism and be arranged in the space 7 that driven gear on each end of separate roller 34, intake roller 35A, 35B, 35C and 35D, exit roller 36, two-way intake roller 43 and guiding trap 50 is contained in ADF3 housing back (referring to Fig. 1).Except as otherwise noted, each gear described below all is at the spur gear (although not breaking away from the gear assembly and the transmission mechanism that also can use other in protection scope of the present invention) that has the gear teeth parallel with axle on the circumference.
Fig. 4 shows an embodiment who the transmission of power of motor 67 is given the power drive mechanism 70 of separate roller 34 to Fig. 8.Power drive mechanism 70 is also referred to as " first power drive mechanism " in this specification.When being arranged in motor 67 along (CW) direction rotation clockwise, power drive mechanism 70 gives separate roller 34 with transmission of power, when the direction of rotation of motor 67 is cut off transmission of power to separate roller 34 when the CW direction forwards (CCW) direction counterclockwise to along paper feed direction.The CW direction refers to motor 67 forwards and reverse relative direction of rotation with the CCW direction.
As shown in Figure 4, be arranged on driving gear 69 and four travelling gears 71,72,73 and 74 engagement in succession on motor 67 power transmission shafts, so that give epicyclic gearing 75 with transmission of power.Travelling gear 71 is as the public travelling gear in first power drive mechanism, second power drive mechanism and the 3rd power drive mechanism in this structure.In this example structure, at the power drive mechanism 70 of transmission of power being given separate roller 34, transmission of power is given the power drive mechanism 120 of intake roller 35A, 35B, 35C and 35D, gives the power drive mechanism 150 of two-way intake roller 43 with transmission of power and transmission of power is given the power drive mechanism 170 shared travelling gears 71 of guiding trap 50.Travelling gear 72 shared conducts in the power drive mechanism 70 transmission of power is given two-way intake roller 43 power drive mechanism 150 sun gear 72 and transmission of power is given travelling gear in the power drive mechanism 170 of guiding trap 50.The travelling gear of the power drive mechanism 170 of guiding trap 50 is given transmission of power in travelling gear 73 shared conducts in the power drive mechanism 70.Thereby, in this 3rd power drive mechanism branch from second power drive mechanism in greater detail.In case motor 67 rotates along the direction of CW or CCW, then the travelling gear 71,72,73 of engagement is given travelling gear 74 so that gear 74 rotates along CCW or CW direction along the assigned direction rotation with transmission of power continuously.
Illustrate in greater detail an example structure of epicyclic gearing 75 among Fig. 6.In the epicyclic gearing 75 of this embodiment, support arm 78 rotatably with the axle 77 coaxial settings of sun gear 76, respectively with sun gear 76 separately two planetary gears 79 and 80 of engagement support by support arm 78.
Sun gear 76 is duplicate gears, and is wherein coaxial and integrally be formed with gear wheel in large diameter 76L and small diameter gear 76S.Support arm 78 comprises from the independent extended arms 81,82 of axle 77 and is formed on arm 81,82 outer ends bearing portion 83,84 with support planetary gears 79,80.The planetary gear 79,80 that supports by support arm 78 respectively with the gear 76S engagement of sun gear 76.When sun gear 76 rotations, also rotate with gear 76S planet gear meshed 79,80 respectively.In addition, in case sun gear 76 rotations, then support arm 78 also rotates along equidirectional.That is to say that when sun gear 76 rotations, planetary gear 79,80 rotates and rotates around sun gear 76 on its axle separately.
Recess 85 forms near the axle 77 of support arm 78.Recess 85 with engaging mechanism 86 engagements so that support arm 78 remain on the appropriate position with sun gear 76 irrelevant to rotation.
The engaging mechanism 86 of this example structure is made of meshing part 87 and stranding paper solenoid 88.Meshing part 87 comprises: arm 90 extends to support arm 78 from axle 89; Retainer is formed on an end of arm 90 and becomes hook-type; With operand 92, extend from axle 89.Retainer 91 can mesh with the recess 85 of support arm 78, can or break away from from it with recess 85 engagements when arm 90 rotates on axle 89.Operand 92 is connected on the axle 93 of rubbing paper solenoid 88 with the hands.Rubbing paper solenoid 88 with the hands is designed to box lunch (for example connect and rub paper solenoid 88 with the hands) when rubbing 88 energisings of paper solenoid with the hands, rubbing paper solenoid 88 with the hands can produce electromagnetic forces and with direct edge axle 93 is inserted into direction driving shaft 93 in the solenoid body, and when not switching on (for example cutting off stranding paper solenoid 88) to rubbing paper solenoid 88 with the hands, electromagnetic force disappears, make axle 93 along with axle 93 from rubbing the direction that paper solenoid body stretches out with the hands, flexibly turn back to its home position.The Motion Transmission of axle 93 is to operand 92, and meshing part 87 rotates on axle 89, and remains on the appropriate position.When disconnecting stranding paper solenoid 88, locate meshing part 87 shown in the solid line among Fig. 6 so that retainer 91 meshes with recess 85.When connecting stranding paper solenoid 88, locate meshing part 87 from recess 85 so that retainer shown in the double dot dash line among Fig. 6, breaks away from.Certainly, can also use other mechanism or structure to realize this purpose and function in protection scope of the present invention not breaking away from.
As shown in Figure 4, travelling gear 74 meshes with the gear 76L of the sun gear 76 of epicyclic gearing 75.When with power when motor passes to travelling gear 74, travelling gear 74 rotates along a direction, sun gear 76 is along another direction rotation.For example, as shown in Figure 4, when driving gear 69 when the CW direction is rotated, travelling gear 74 is along the rotation of CW direction, sun gear 76 rotates along the CCW direction.When rubbing 88 connections of paper solenoid with the hands, support arm 78 rotations are so that planetary gear 79,80 rotates along the CW direction around sun gear 76.Preferably, rubbing 88 on paper solenoid with the hands just connects when retainer 91 breaks away from from engagement/releasing mechanism 85.Rub paper solenoid 88 with the hands even disconnect support arm 78 begins rotation from disengaging configuration after, retainer 91 can not be engaged in the recess 85 yet.
As shown in Figure 5, travelling gear 94 and epicyclic gearing 75 adjacent layouts.Travelling gear 94 can mesh with the planetary gear 79,80 of epicyclic gearing 75 and disconnect, because planetary gear 79,80 rotates along the CCW direction around sun gear 76, planetary gear 79 and travelling gear 94 engagements, and planetary gear 80 breaks away from from travelling gear 94.Travelling gear 94 is duplicate gears, wherein gear wheel in large diameter 94L coaxial and formation integrally with small diameter gear 94S.Planetary gear 79,80 can mesh with gear wheel in large diameter 94L.Small diameter gear 94S and driven gear 95 engagements that are arranged on (Fig. 9) on the axle 111 that supports separate roller 34.95 gear structure or layout are not limited thereto from travelling gear 94 to driven gear, also can use various deformation not breaking away from protection scope of the present invention.And the quantity of travelling gear and diameter dimension thereof can be as required, for example according to 95 length etc. changes from travelling gear 94 to driven gear.
When the planetary gear 79 of the rotation around sun gear 76 along the CCW direction meshed with travelling gear 94, planetary gear 79 was limited around sun gear 76 rotations.Then, because planetary gear 79 receives the power that transmits from sun gear 76, thereby planetary gear 79 rotation on its axle.Thereafter, travelling gear 94 is along the rotation of CCW direction, and driven gear 95 rotates along the CW direction.Because driven gear 95 is along CW direction rotation, rotate along the paper supply direction so support the axle 111 of separate roller 34.
As shown in Figure 7, when the rotation of driving gear 69 when being transformed into along the CW direction along the CCW direction, travelling gear 74 is along the rotation of CCW direction, sun gear 76 rotates along the CW direction.As shown in Figure 5, when planetary gear 79 meshes with travelling gear 94, also can not mesh with recess 85 even rub paper solenoid 88 disconnection retainers 91 with the hands.Thereby support arm 78 is rotatable, and planetary gear 79,80 rotates along the CW direction around sun gear 76.Support arm 78 is followed the rotation of planetary gear 79,80 and is rotated, and the recess 85 of support arm 78 is come and retainer 91 position engaged.At this moment, rub paper solenoid 88 with the hands if disconnect, then retainer 91 and recess 85 engagements as shown in Figure 7, limit being further rotated of support arm 78.In the case, planetary gear 79,80 does not mesh with travelling gear 94.The planetary gear 79,80 of support arm 78 is called " disengaging configuration " from the position that travelling gear 94 breaks away from this explanation.When retainer 91 was engaged on recess 85, support arm 78 locking was not so that rotate till connecting when rubbing paper solenoid 88 with the hands again and remain in the disengaging configuration.
As shown in Figure 8, when rubbing 88 connections of paper solenoid with the hands, planetary gear 79,80 rotates along the CW direction around sun gear 76 along with the rotation of sun gear 76 along the CW direction.When the planetary gear 80 of the rotation around sun gear 76 along the CW direction meshed with travelling gear 94, planetary gear 80 is limited can not be further around sun gear 76 rotations.The power that planetary gear 80 receives from sun gear 76 rotates in its upper edge CCW direction.Can make travelling gear 94 along the rotation of CW direction like this, driven gear 95 rotates along the CCW direction then.When driven gear 95 when the CCW direction is rotated, the axle 111 that supports separate roller 34 is along the direction rotation opposite with paper feed direction.In this way, travelling gear 72,73,74,94 and epicyclic gearing 75 are as the gear train of first power drive mechanism.
An embodiment from the axle 111 that supports separate roller 34 to the power drive mechanism 110 of pickup roller 33 is described below.As shown in Figure 2, the pickup roller 33 in the present embodiment structure is supported on an end of arm 29, and arranged apart along direction and the separate roller 34 opposite with paper feed direction.As mentioned above, the transmission of power of motor 67 is given axle 111, and passes to arm 29, pickup roller 33 and separate roller 34 from axle 111.
An embodiment of 33 power drive mechanism 110 has been shown among Fig. 9 from axle 111 to pickup roller.Power drive mechanism 110 comprise be arranged on the one-way clutch 112 of axle on 111, with separate roller 34 integrally formed gears 113, be fixed on the gear 115 on the axle 114 of pickup roller 33 and power be transferred to the travelling gear 116 of gear 115 from gear 113.Separate roller 34 is rotatably by axle 111 upper supports.One-way clutch 112 and gear 113 are arranged on the axial end of separate roller 34.In Fig. 9, one-way clutch 112 is arranged on the rear side of separate roller 34, and gear 113 is arranged on the front side of separate roller 34.Thereby the one-way clutch 112 that is arranged on separate roller 34 rear sides is illustrated by the broken lines.Certainly can also comprise other structure and structural configuration not breaking away within the protection range of the present invention.
The one-way clutch 112 of present embodiment structure comprises by gear 113 and one-way clutch 112 and is connected to the axle collar (collar) 117 of axle on 111 and the copulational protuberance 118 that stretches out vertically from the separate roller 34.The axle collar 117 is arranged on a side of separate roller 34, and with axle 111 rotations.Copulational protuberance 118 stretches out vertically from the periphery of separate roller 34.As shown in the figure, when the axle collar 117 engaged with copulational protuberance 118, axle 111 rotation passed to separate roller 34 by the axle collar 117 and copulational protuberance 118, and separate roller 34 is along the direction rotation identical with axle 111.
Since when separate roller 34 can rotate on axle 111, can the 117 direction rotations that separate along copulational protuberance 118 from the axle collar.When separate roller 34 rotated a circle on axle 111 basically, copulational protuberance 118 arrived the axle collar 117 places and its engagement.No matter this makes that from the transmission of power of axle 111 how 34 skies of separate roller circle.
Travelling gear 116 is between being arranged on the gear 113 on the separate roller 34 and being fixed between the gear 115 of axle on 114 of pickup roller 33.Travelling gear 116 and gear 113,115 engagements.Travelling gear 116 rotates under gear 113 turning efforts, gear 115 rotations then.Because gear 115 is fixed on the axle 114 of pickup roller 33, pickup roller 33 is followed the rotation of gear 115 and is rotated.Just, separate roller 34 always rotates along identical direction with pickup roller 33.Utilize this power drive mechanism 110, the axle 111 that power supports separate roller 34 from rotation is delivered to separate roller 34 and paper feed roller 33.
Shown in the example structure among Fig. 9, the end of arm 29 is rotatably supported by axle 111, receives the power that transmits from axle 111, and moves vertically.Between axle 111 and arm 29 ends, the slip-clutch (not shown) is set.By slip-clutch, the rotation of axle 111 is passed to arm 29.Slip-clutch is designed to so that cut off transmission of power by slip-clutch plates when the load of being born exceeds the appointment torque.When axle 111 when the CW direction is rotated, revolving force passes to arm 29 by slip-clutch, arm 29 is along the direction rotation that reduces pickup rollers 33.On the contrary, when axle 111 when the CCW direction is rotated, arm 29 is along the direction rotation of rising pickup roller 33.As shown in Figure 2, if arm 29 rotates along the direction that reduces pickup roller 33, then pickup roller 33 contacts with the spigot surface in file feeding path 32 or the file on the input pallet 30.Therefore, along with the rotation generation load of arm 29, slip-clutch slides, and axle 111 can be further rotated, and arm 29 keeps static.If arm 29 is along the direction rotation of rising pickup roller 33, then it contacts with the housing of ADF3.Therefore, along with the rotation generation load of arm 29, slip-clutch slides, and axle 111 can be further rotated, and arm 29 keeps static.Thereby, will give arm 29 from the transmission of power of axle 111 by slip-clutch, arm 29 moves with the spigot surface with respect to file feeding path 32 and reduces or rising pickup roller 33.Certainly, do not breaking away from method and/or the structure that to use other paper feed or separation within the protection range of the present invention.
Figure 10 to 12 shows an embodiment of the power drive mechanism 120 from motor 67 to intake roller 35A, 35B, 35C and 35D.Power drive mechanism 120 is given intake roller 35A, 35B, 35C and 35D along paper feed direction with transmission of power, or is delivered to its downstream from the upstream side in file feeding path 32, and with the irrelevant to rotation direction of motor 67.In this manual, power drive mechanism 120 is also referred to as " second power drive mechanism ".
As shown in figure 10, travelling gear 71 and driving gear 69 engagements that are arranged on motor 67 power transmission shafts are given epicyclic gearing 122 with transmission of power.As mentioned above, except that power drive mechanism 120, travelling gear 71 shared at the power drive mechanism 70 of transmission of power being given separate roller 34, give the power drive mechanism 150 of two-way intake roller 43 with transmission of power and transmission of power given between the power drive mechanism 170 of guiding trap 50.In case motor 67 along CW or the rotation of CCW direction, then gives travelling gear 71 with transmission of power so that it is along CW or the rotation of CCW direction.
Epicyclic gearing 122 is configured to so that support arm 125 is rotatably supported and with the axle 124 coaxial settings of sun gear 123, sun gear 123 and two are supported by support arm 125 with sun gear 123 planet gear meshed 126,127.Certainly also comprise other structure within the protection range of the present invention not breaking away from.For example, if desired, can omit planetary gear 126, support arm 125 can support the independent planetary gear that is movable to each desired location 127.Also can have other distortion.
Sun gear 123 in this example structure is duplicate gears, wherein gear wheel in large diameter 123L coaxial and formation integrally with small diameter gear 123S.By the planetary gear 126,127 that support arm 125 supports, the gear 123S with sun gear 123 meshes respectively.When sun gear 123 rotations, planetary gear 126,127 also rotates.Under the turning effort of sun gear 123, support arm 125 also rotates along equidirectional.That is to say that when sun gear 123 rotations, planetary gear 126,127 rotates on the axle separately at it, and around sun gear 123 rotations.
Travelling gear 71 meshes with the gear 123L of the sun gear 123 of epicyclic gearing 122.When with power when motor 67 passes to travelling gear 71, travelling gear 71 rotates along a direction, and sun gear 123 rotates along other direction.For example, as shown in figure 10, when driving gear 69 when the CCW direction is rotated, travelling gear 71 is along the rotation of CW direction, sun gear 123 is along the rotation of CCW direction, and planetary gear 126,127 rotates along the CCW direction around sun gear 123.
As shown in figure 10, travelling gear 128,129 and epicyclic gearing 122 adjacent layouts.Travelling gear 128 is duplicate gears, wherein gear wheel in large diameter 128L coaxial and formation integrally with small diameter gear 128S.Similarly, travelling gear 129 also is a duplicate gear, wherein gear wheel in large diameter 129L coaxial and formation integrally with small diameter gear 129S.The planetary gear 126 of epicyclic gearing 122 can mesh with the gear 128L of travelling gear 128 and break away from from it.The planetary gear 127 of epicyclic gearing 122 can mesh with the gear 129L of travelling gear 129 or break away from from it.In addition, gear 128L and 129L are engaged with each other.Alternatively, if desired, planetary gear 127 can be arranged on the support arm 125 and can mesh with two gear 128L and 129L.
As shown in figure 10, when planetary gear 126,127 around sun gear 123 when the CCW direction rotate, the gear 128L engagement of planetary gear 126 and travelling gear 128, and planetary gear 127 is from travelling gear 129 disengagings.When the planetary gear 126 of the rotation around sun gear 123 along the CCW direction meshed with travelling gear 128, planetary gear 126,127 is limited can not be around sun gear 123 rotations.Planetary gear 126 receives and rotates from the power of sun gear 123 and in its upper edge CW direction.Then, travelling gear 128 rotates along the CCW direction.Travelling gear 129 with travelling gear 128 engagements rotates along the CW direction.
As shown in figure 11, when driving gear 69 when the CW direction is rotated, when travelling gear 71 rotated along the CCW direction, sun gear 123 was along the rotation of CW direction, planetary gear 126,127 rotates along the CW direction around sun gear 123.When planetary gear 126,127 around sun gear 123 when the CW direction rotate, the gear 129L engagement of planetary gear 127 and travelling gear 127, planetary gear 126 is from travelling gear 128 disengagings.When the planetary gear 127 of the rotation around sun gear 123 along the CW direction meshed with travelling gear 129, planetary gear 126,127 is limited can not be around sun gear 123 rotations.Then, planetary gear 127 receptions are rotated in its upper edge CCW direction from the power of sun gear 123.Travelling gear 129 rotates along the CW direction thus.Rotate along the CCW direction with the travelling gear 128 of travelling gear 129 engagements.Thereby, regardless of the direction of rotation of driving gear 69, the power that travelling gear 128 receives along the CCW direction, the power that travelling gear 129 receives along the CW direction.
Figure 12 shows from travelling gear 128,129 to intake roller 35A, 35B, 35C and 35D and the transmission of power of exit roller 36.The gear 128S of travelling gear 128 and five travelling gears 130,131,132,133 and 134 be engagement continuously.Driven gear 136 engagements in driven gear 135 engagements on travelling gear 133 and the axle that is arranged on the intake roller 35A, travelling gear 134 and the axle that is arranged on exit roller 36.As mentioned above, regardless of the direction of rotation of driving gear 69, all along the rotation of CCW direction, power is delivered to five travelling gears 130,131,132,133 and 134 from travelling gear 128 to travelling gear 128 continuously, travelling gear 135 is along the rotation of CW direction, and driven gear 136 rotates along the CCW direction.When driven gear 135 when the CW direction is rotated, intake roller 35A rotates along paper feed direction.When driven gear 136 when the CCW direction is rotated, exit roller 36 rotates along paper feed direction.
The gear 129S of travelling gear 129 and three travelling gears 137,138 and 139 be engagement continuously.Driven gear 142 engagements in driven gear 141 engagements in driven gear 140 engagement on gear 129S and the axle that is arranged on intake roller 35D, travelling gear 138 and the axle that is arranged on intake roller 35C, travelling gear 139 and the axle that is arranged on intake roller 35B.As mentioned above, travelling gear 129 is along CW direction rotation, and with the irrelevant to rotation direction of driving gear 69, power is passed to travelling gear 137,138,139 continuously from travelling gear 129.In response, driven gear 140,141 is along the rotation of CCW direction, and driven gear 142 rotates along the CW direction.When driven gear 140,141 when the CCW direction is rotated, intake roller 35D, 35C rotate along paper feed direction.When driven gear 142 when the CW direction is rotated, intake roller 35B rotates along paper feed direction.Thereby, regardless of the direction of rotation of driving gear 69, give each intake roller 35A, 35B, 35C and 35D and exit roller 36 with transmission of power along paper feed direction.
Epicyclic gearing 122 and travelling gear 128 to 134,137 to 139 are as the gear train of second power drive mechanism.As shown in figure 12, in the gear train that comprises travelling gear 128,129,137 to 139, will from respect to paper feed direction towards the upstream side in file feeding path 32 and be arranged on the power of the intake roller 35D that reads positive downstream, position, pass to intake roller 35C and 35B in order.By comprising the gear train of travelling gear 128,130 to 133, transmission of power is given the intake roller 35A that is arranged on the upstream side in file feeding path 32 with respect to paper feed direction.In addition, by four travelling gears 130 to 133, will give intake roller 34A from the transmission of power of travelling gear 128,129.Thereby in intake roller 35A, 35B, 35C and 35D, power passes to intake roller 35A by the gear train with maximum numbers of gears.That is to say that intake roller 35A is arranged in the last of transmission of power order.
Between the file of feeding on the file feeding path 32 is clipped in intake roller 35A and hold-down roller 37 with respect to the paper feed direction upstream side in order, between intake roller 35B and the hold-down roller 37, between intake roller 35C and the hold-down roller 37, and between the intake roller 35D and hold-down roller 37 in downstream.Be clipped in file between intake roller 35A and the hold-down roller 37 before separate between intake roller 35A and the hold-down roller 37, be sandwiched between intake roller 35B and the hold-down roller 37.Similarly,, be clipped between intake roller 35C and the hold-down roller 37 before separate between intake roller 35B and the hold-down roller 37 at file.Similarly,, be clipped between intake roller 35D and the hold-down roller 37 before separate between intake roller 35C and the hold-down roller 37 at file.
As mentioned above, in the power drive mechanism 120 of present embodiment, power is delivered to upstream side in order continuously from the intake roller 35D that is positioned at the downstream with respect to paper feed direction, passes to intake roller 35C, 35B, 35A.Thereby, for example, comparing with intake roller 35C on the upstream side, the intake roller 35D on the downstream is because the effect of the backlash of gear train is less.Similarly, intake roller 35C is because the effect of the backlash of gear train is littler than intake roller 35B.Similarly, intake roller 35B is because the effect of the backlash of gear train is littler than intake roller 35A.Thereby, clamped and always clamped by the intake roller of stable rotation under less backlash influence by the file of intake roller 35A, 35B, 35C and 35D and its pinch roll 37 feedings separately.
For example, from the intake roller 35C that reads the positive upstream side in position that is arranged on file feeding path 32 to being arranged on the intake roller 35D that reads positive downstream, position, be clamped in file front end between intake roller 35C and the hold-down roller 37 pass read the position after, be clamped between intake roller 35D and the hold-down roller 37.Intake roller 35D has the less effect that is caused by backlash than intake roller 35C, so its spin stabilization.In addition, when the front end of file was clamped between intake roller 35D and the hold-down roller 37, it is unstable that the file feeding can not become.Thereby the file that reads the position feeding on file feeding path 32 can become stable.
Figure 13 to 15 shows power drive mechanism 150 and an embodiment of the power interruption mechanism 151 from motor 67 to two-way intake roller 43.Power drive mechanism 150 is given two-way intake roller 43 along lead and Return-ing direction with transmission of power according to the direction of rotation of motor 67.The transmission of power from motor 67 to two-way intake roller 43 is interrupted in power interruption mechanism 151 the direction of rotation of motor 67 is when Return-ing direction is transformed into lead.Lead is meant the direction that the file of feeding is drawn to two-way feed path 39 from file feeding path 32, and Return-ing direction is meant that the feeding file turns back to the direction in file feeding path 32 from two-way feed path 39.Power drive mechanism 150 is as the 3rd power drive mechanism in the present embodiment structure.
As shown in figure 13, driving gear 69 engagements on travelling gear in the present embodiment structure 71 and the power transmission shaft that is arranged on motor 67 are given epicyclic gearing 153 with transmission of power.As mentioned above, travelling gear 71 is given the power drive mechanism 70 of separate roller 34, is given the power drive mechanism 120 of intake roller 35A, 35B, 35C and 35D with transmission of power and transmission of power is given in the power drive mechanism 170 of guiding trap 50 by shared at power drive mechanism 150, with transmission of power.In case motor 67 is along the rotation of CW or CCW direction, then transferring power with rotary transmission gear 71 so that travelling gear 71 along CCW or the rotation of CW direction.
Epicyclic gearing 153 is configured to so that support arm 156 rotatably is supported on the axle 155 of sun gear 72 and with axle 155 coaxial settings, sun gear 72 and support by support arm 156 with two planetary gears 157,158 of sun gear 72 engagement.
Sun gear 72 is duplicate gears, the wherein coaxial and formation integrally of gear wheel in large diameter 72L and small diameter gear 72S.Sun gear 72 is the travelling gears 72 in the power drive mechanism 70, and gear wheel in large diameter 72L is as travelling gear 72.Arm gear 156 can be rotatably set on the axle 155 and supports each planetary gear 157,158.Planetary gear 157,158 and small diameter gear 72S engagement.When sun gear 72 rotations, respectively with 157,158 rotations of small diameter gear 72S planet gear meshed.In addition, in case the rotation of sun gear 72, support arm 156 also rotates along equidirectional.Just, when sun gear 72 rotations, planetary gear 157,158 rotation on its axle separately, and around sun gear 72 rotations.
The support arm 156 of present embodiment structure is provided with projection 159 at an end of support planetary gears 157.When projection 159 meshed with power interruption mechanism 151, a support arm 156 that rotates in the axle 155 upper edge CCW directions of sun gear 72 was limited on the appropriate position.
The power interruption mechanism 151 of present embodiment structure comprises the attachment 160 and the solenoid 161 of turning back.Attachment 160 comprise arm 163, radially extend with support arm 156 from axle 162; Retainer 164 is formed on an end of arm 163 and is hook-type; With operand 165, radially extend from axle 162.Retainer 164 can with projection 159 engagement of support arm 156, when arm 163 rotate on axle 162, mesh or disengaging from it with projection 159.Operand 165 is connected on the axle 166 of the solenoid 161 of turning back.The solenoid 161 of turning back is designed to when the solenoid 161 of turning back is switched on (for example connecting solenoid 161), produce the direct driving shaft 166 of direction that electromagnetic force is inserted axle 166 in the solenoid body with the edge, when the solenoid 161 of turning back not being switched on (for example disconnecting solenoid 161), electromagnetic force disappears, and makes axle 166 along making axle 166 directions of stretching out from solenoid body directly flexibly turn back to its home position.The motion of axle 166 is delivered to operand 165, and attachment 160 are rotating on the axle 162 and remaining on the appropriate position.
When solenoid 161 is turned back in disconnection, attachment 160 are arranged to so that retainer 164 meshes with projection 159, shown in solid line among Figure 13.Retainer 164 can rotate from its bonding station along the CW direction, as long as for example do not push it against this direction by spring, it just will remain on the bonding station.Although projection 159 is rotated along with the rotation of support arm 156, its direction of rotation of bonding station be basically attachment 160 radially.Thereby even the revolving force of support arm 156 is delivered to attachment 160 by projection 159, attachment 160 can not rotate from bonding station with respect to the thrust of for example spring yet.When solenoid 161 is turned back in connection, attachment 160 are arranged to so that retainer 164 breaks away from from projection 159, shown in the double dot dash line among Figure 13.
As shown in figure 13, travelling gear 71 meshes with the gear 72L of the sun gear 72 of epicyclic gearing 153.When power is delivered to the travelling gear 71 and travelling gear 71 during along the rotation of direction from motor 67, sun gear 72 is along another rotation.For example, as shown in figure 13, when driving gear 69 when the CCW direction is rotated, travelling gear 71 is along the rotation of CW direction, sun gear 72 rotates along the CCW direction.In response, planetary gear 157,158 rotates along the CCW direction around sun gear 72.Along with the rotation of the planetary gear 157,158 that centers on sun gear 72, support arm 156 rotations, the projection 159 of support arm 156 is positioned in such a way that it can be connected with retainer 164.At this moment, if disconnect the solenoid 161 of turning back, then retainer 164 is connected with projection 159, and the rotation of support arm 156 is limited.In the case, two planetary gears 157 and 158 with travelling gear 167 engagements.In this manual, the planetary gear 157,158 of support arm 156 is called as " disengaging configuration " from the position that travelling gear 167 breaks away from.When retainer 164 meshed with projection 159, support arm 156 was limited along the rotation of CCW direction, and support arm 156 is maintained at disengaging configuration till the solenoid 161 of turning back is connected.
As shown in figure 13, travelling gear 167 and epicyclic gearing 153 adjacent layouts.Travelling gear 167 can mesh with the planetary gear 157,158 of epicyclic gearing 153 and break away from from it.Travelling gear 167 is duplicate gears, the wherein coaxial and whole formation of gear wheel in large diameter 167L and small diameter gear 167S.Planetary gear 157,158 can and break away from from it with gear wheel in large diameter 167L engagement.Driven gear 168 engagement on small diameter gear 167S and the axle that is arranged on two-way intake roller 43.Those of ordinary skills are to be appreciated that from travelling gear 167 to driven gear 168 gear structure is not limited thereto.For example, the quantity of travelling gear and/or its diameter dimension can change, for example according to 168 length or other correlative factor change from travelling gear 167 to driven gear.
As shown in figure 14, when driving gear 69 when the CW direction is rotated, travelling gear 71 is along the rotation of CCW direction and sun gear 72 rotates along the CW direction.In response, planetary gear 157,158 rotates along the CW direction around sun gear 72.Along with planetary gear 157,158 rotation around sun gear 72 along the CW direction, support arm 156 rotates along the CW direction.When support arm 156 when the CW direction is rotated, projection 159 breaks away from from retainer 614.Thereby even when the solenoid 161 of turning back disconnects, support arm 159 can rotate along the CW direction.When planetary gear 157,158 around sun gear when the CW direction rotate, planetary gear 157 meshes with travelling gear 157.
When the planetary gear 157 of the rotation around sun gear 72 along the CW direction meshed with travelling gear 167, planetary gear 157 is limited can not be around sun gear 72 rotations.Then, planetary gear 157 receives the power from sun gear 72, and rotates in its upper edge CCW direction.In response, travelling gear 167 is along the rotation of CW direction, and driven gear 168 rotates along the CCW direction.When driven gear 168 when the CCW direction is rotated, two-way intake roller 43 rotates along Return-ing direction.
When solenoid 161 is turned back in connection under condition as shown in figure 13, attachment 160 rotations, retainer 164 breaks away from from projection 159.Thereby support arm 156 can be along the rotation of CCW direction, and planetary gear 157,158 rotates along the CCW direction around sun gear 72.As shown in figure 15, when the planetary gear 158 of the rotation around sun gear 72 along the CCW direction meshed with travelling gear 167, planetary gear 158 is limited can not be around sun gear 72 rotations.Planetary gear 158 receives the power that transmits from sun gear 72 thereafter, and rotates in its upper edge CW direction.In response, travelling gear 167 is along the rotation of CCW direction, and driven gear 168 rotates along the CW direction.When driven gear 168 when the CW direction is rotated, two-way intake roller 43 rotates along Return-ing direction.Preferably, at least some embodiment with in arranging, only when breaking away from, just connects by retainer 164 solenoid 161 of turning back from projection 159.Even disconnect the solenoid 161 of turning back after support arm 156 rotates from disengaging configuration along the CCW direction, retainer 164 can not engage with projection 159 yet.
When the direction of rotation of driving gear 67 when the CCW direction is transformed into the CW direction, support arm 156 can be from the situation lower edge CW direction rotation with travelling gear 167 engagements of as shown in figure 15 planetary gear 158.When support arm 156 when the CW direction is rotated, planetary gear 157 and travelling gear 167 mesh as shown in figure 14.When the direction of rotation of driving gear 67 when the CW direction converts the CCW direction to, support arm 156 is from as shown in figure 14 situation lower edge CCW direction rotation, retainer 164 as shown in figure 13 with projection 159 engagements.In this way, epicyclic gearing 153 and the gear train of travelling gear 167 as the power interruption mechanism of this example structure.
Figure 16 and Figure 17 show an embodiment of the power drive mechanism 170 from motor 67 to guiding trap 50.This embodiment power drive mechanism 170 is configured to change according to the direction of rotation of motor 67 position of guiding trap 50.Transmission mechanism 170 is as the 4th transmission mechanism in the example structure described in this specification.
As shown in figure 16, the driving gear 69 and the travelling gear 71,72,73 that are arranged on the power transmission shaft of motor 67 mesh continuously, and power is delivered to epicyclic gearing 174 from travelling gear 73.As mentioned above, travelling gear 71 give at power drive mechanism 170, with transmission of power separate roller 34 power drive mechanism 70, give the power drive mechanism 120 of intake roller 35A, 35B, 35C and 35D with transmission of power and transmission of power given in the power drive mechanism 150 of two-way intake roller 43 by shared.Travelling gear 72 with the travelling gear of transmission of power to the power drive mechanism 70 of separate roller 34, is also given transmission of power by shared conduct the sun gear 72 of the power drive mechanism 150 of two-way intake roller 43 by shared conduct.The travelling gear of the power drive mechanism 70 of separate roller 34 given transmission of power by shared conduct by travelling gear 73.In case along CW or CCW direction turning motor 67, then power is delivered to travelling gear 73 so that travelling gear 73 rotates along CCW or CW direction.
Epicyclic gearing 174 is configured to so that support arm 177 is rotatably supported by the axle 176 of sun gear 175, and with axle 176 coaxial settings, sun gear 175 and support by support arm 177 with two planetary gears 178,179 of sun gear 175 engagements.
Sun gear 175 is duplicate gears, and is wherein coaxial and integrally be formed with gear wheel in large diameter 175L and small diameter gear 175S.The small diameter gear 175S engagement of planetary gear 178,179 and sun gear 175.When sun gear 175 rotations, with 178,179 rotations of small diameter gear 175S planet gear meshed.In case sun gear 175 rotations, support arm 177 also rotates along equidirectional.Just, when sun gear 175 rotations, planetary gear 178,179 rotation on its axle separately, and around sun gear 175 rotations.
Travelling gear 73 meshes with the sun gear 175 of epicyclic gearing 174.When power when motor 67 is delivered to travelling gear 73, travelling gear 73 rotates along a direction, and sun gear 175 rotates along other direction.For example, as shown in figure 16, when driving gear 69 when the CW direction is rotated, travelling gear 73 is along the rotation of CCW direction, sun gear 175 is along the rotation of CW direction, planetary gear 178,179 rotates along the CW direction around sun gear.
As shown in figure 16, travelling gear 180,181 and epicyclic gearing 174 adjacent layouts.Travelling gear 180 is duplicate gears, the wherein coaxial and formation integrally of gear wheel in large diameter 180L and small diameter gear 180S.Planetary gear 178,179 can mesh with the gear 180L of travelling gear 180 and break away from from it.Driven gear 182 engagements in 181 engagements of the gear 180S of travelling gear 180 and travelling gear, travelling gear 181 and the axle that is arranged on guiding trap 50.
As shown in figure 16, when planetary gear 178,179 around sun gear 175 when the CW direction rotate, the gear 180L engagement of planetary gear 178 and travelling gear 180, and planetary gear 179 is from travelling gear 180 disengagings.When the planetary gear 178 of the rotation around sun gear 175 along the CW direction meshed with travelling gear 180, planetary gear 178,179 is limited can not be around sun gear 175 rotations.Planetary gear 178 receives and rotates from the power of sun gear 175 and in its upper edge CCW direction.In response, travelling gear 180 rotates along the CW direction.With the travelling gear 181 of the gear 180S of travelling gear 180 engagement along the rotation of CCW direction, rotate along the CW direction with the driven gear 182 of travelling gear 181 engagements.When driven gear 182 when the CW direction is rotated, guiding trap 50 rotates up and is provided in link position 38 and reads the position to discharge tray 31 boot files, as shown in Figure 2 from file feeding path 32.
As shown in figure 17, when driving gear 69 along CCW direction rotation, travelling gear 73 is along the rotation of CW direction, sun gear 175 is along the rotation of CCW direction, planetary gear 178,179 rotates along the CCW direction around sun gear 175.When planetary gear 178,179 around sun gear 175 when the CCW direction rotate, the gear 180L engagement of planetary gear 179 and travelling gear 180, and planetary gear 178 is from travelling gear 180 disengagings.When the planetary gear 179 of the rotation around sun gear 175 along the CCW direction meshed with travelling gear 180, planetary gear 178,179 is limited can not be around sun gear 175 rotations.Planetary gear 179 receives and rotates from the power of sun gear 175 and in its upper edge CW direction.In response, travelling gear 180 rotates along the CCW direction.With the travelling gear 181 of the gear 180S of travelling gear 180 engagement along the rotation of CW direction, rotate along the CCW direction with the driven gear 182 of travelling gear 181 engagements.When driven gear 182 when the CCW direction is rotated, guiding trap 50 is rotated down from position as shown in Figure 2, is arranged in link position 38 and reads the position to two-way feed path 39 and boot files from file feeding path 32.Travelling gear 72,73, epicyclic gearing 174 and travelling gear 180,181 are as the gear train in the 4th power drive mechanism of illustrated embodiment structure.
Between axle that driven gear 182 is set and guiding trap 50, be provided with the slip-clutch (not shown) among this embodiment.By slip-clutch, the rotation of axle passes to guiding trap 50.Slip-clutch is configured to interrupt transmission of power by slip-clutch plates when the load of bearing above pre-determined torque.Guiding trap 50 is configured to swing to the position that file is directed to each feeding path, can not rotate to exceed and position contacting such as guiding parts.Thereby after guiding trap 50 swung to appropriate position, it was limited and can not rotates, and slip-clutch slides, and the axle that driven gear 182 is set can be further rotated, and guiding trap 50 keeps static.Certainly, 182 gear structure is not limited to this from travelling gear 180 to driven gear.For example, the number of travelling gear and/or its diameter dimension can for example change according to length or other suitable factor of travelling gear 180 to driven gear 182.
By above-mentioned each power drive mechanism 70,110,120,150 and 170, carry out transmission of power to separate roller 34, pickup roller 33, intake roller 35A to 35D, two-way intake roller 43 and guiding trap 50 respectively from monomotor 67.Be arranged on motor 67 and drive driving gear 69 on the output shafts and shared in power drive mechanism 70,110,120,150 and 170 with the travelling gear 71 of driving gear 69 engagements.Power drive mechanism 120 is given intake roller 35A to 35D by the gear train that branches out with transmission of power from travelling gear 71.Power drive mechanism 150 is given two-way intake roller 43 by the gear train that branches out with transmission of power from travelling gear 71.Power drive mechanism 70,170 is given transmission of power separate roller 34 and guiding trap 50 respectively by the gear train that branches out from the travelling gear 72,73 that is arranged in travelling gear 71 downstreams with respect to paper feed direction.
Driving gear 69 that is engaged with each other and the backlash between the travelling gear 71 are created on the travelling gear 71.On the contrary, because travelling gear 72,73 further meshes, so on downstream, have the accumulation backlash with respect to the travelling gear 71 of power transmission direction.Power drive mechanism 120 as the gear train that branches out from travelling gear 71 to give intake roller 35A to 35D, so that obtain almost not have the transmission of power of backlash with transmission of power.Similarly, power drive mechanism 150 as the gear train that branches out from travelling gear 71 to give two-way intake roller 43, so that obtain almost not have the transmission of power of backlash with transmission of power.In addition, owing in travelling gear 71, almost there is not backlash, so fluctuation of the load that produces when separate roller 34 rotates after picking up file fully and contacts with separating pad, fluctuation with the load that is produced when arranging guiding trap 50 with boot files slip-clutch slip afterwards is not controlled as and can exerts an influence by the rotation of 71 couples of intake roller 35A to 35D of travelling gear and two-way intake roller 43.
Power drive mechanism 70,170 is told from power drive mechanism 150, and other power drive mechanism does not come out from power drive mechanism 120 branches.Thereby, controlled the fluctuation of load in separate roller 34 and the guiding trap 50 so that it especially can not influence intake roller 35A to 35D.In addition, the power transmission path that branches out from travelling gear 71 is reduced to both direction, i.e. power drive mechanism 120 and power drive mechanism 150 have been simplified the structure of gear train like this.
The guiding trap 50 that the power of motor 67 is passed to by power drive mechanism 170, be configured to the link position 38 places conversions feeding path on file feeding path, and as long as when file arrives link position 38 with respect to the front end of paper feed direction, finished the paper feed path that is transformed into expection.The little change of guiding trap 50 service speeds can not produce harmful effect in the operation of specifying boot files on the paper feed path to guiding trap 50.Thereby, can or only can not occur very little owing to power drive mechanism 70,170 is easier to occur harmful effect that backlash brings than power drive mechanism 120,150.
The meeting description is according to an embodiment of the image read operation of image read-out 1 embodiment of described accompanying drawing below.
Though image read-out 1 can be used as FBS and ADF3, because FBS is not relevant especially with the present invention, so omit the detailed description that FBS is used at this.Not breaking away from the present invention can also use as the operation of the system convention of FBS.If use ADF3, then should be with respect to file mounting table 2 close files lid 4.By the opening and closing of the sensor file lid 4 that is arranged on the file mounting table 2 or therewith is provided with, can use ADF3 when it is closed with box lunch by control documents lid 4.File Gn to be read is placed on the input pallet 30.File surface (being also referred to as " first surface ") to be read faces up when being placed on file Gn on the input pallet 30.File Gn can be an a piece of paper or a stacker.For example, when reading the file Gn of intended size, it fitly can be piled up to be placed on and import on the pallet 30, the first surface of the first page file G1 up.
When in image read-out 1, importing " beginning " when reading (for example " beginning " key on user's push panel 5), then motor 67 is driven, and pickup roller 33, separate roller 34, intake roller 35A, 35B, 35C, 35D, exit roller 36 and two-way intake roller 43 are with its timing rotation separately.When arm 29 descends, pickup roller 33 and the file G1 face contact of importing on the pallet 30.From being placed on uppermost position in fig-ure and directly being subjected to the file G1 of pickup roller 33 and separate roller 34 turning efforts, file Gn separates from a stacker one by one and is fed in the file feeding path 32.The file Gn that has rubbed with the hands is directed to by file feeding path 32 and reads the position, by reading reading the image fetching unit of waiting for below the position 22.File Gn is discharged on the discharge tray 31.In this image read operation, the paper feed path of file Gn is different for the single face read operation with two-sided read operation.To determine to read the single face of file Gn still be two-sided by starting single face read mode or two-sided read mode, and this point has preestablished (for example based on the user's input by guidance panel 5) when input begins to read.
Figure 18 is the flow chart of presentation video reading device 1 with an embodiment of single face read mode operation.Figure 19 is the flow chart of presentation video reading device 1 with an embodiment of two-sided read mode operation.Figure 20 is the sequential chart of presentation video reading device 1 with an embodiment of single face read mode operation.Figure 21 is the sequential chart of an embodiment of 1 pair of single face read mode operation of image read-out.The schematically illustrated file Gn of Figure 22 to Figure 26 is as the how single face read mode feeding of this embodiment.In the accompanying drawings, refer in two-sided read mode, at first be read first of file Gn, refer to second of file Gn in two-sided read mode, be read subsequently by the surface of numeral " 2 " expression by the surface of file Gn of numeral " 1 " expression.First and second is respectively the front and back of file Gn.
Before single face reads beginning, as shown in figure 22, guiding trap 50 is set so that extend to discharge tray 31 from reading the position in link position 38 file feeding paths 32.Guiding trap 46 is set so that extend to and read the position from input pallet 30 in crossover location 40 file feeding paths 32.Guiding trap 47 is set so that file feeding path extends to the position of reading in file feeding path 32 from the end 41 in two-way feed path 39 at crossover location 40.
When " beginning " being read (S1:Y) when being input in the image read-out 1, determine whether file Gn is placed on the input pallet 30 (S2).Determine (S2:N) when not having file Gn to be placed on the input pallet 30 when controller 60, then on LCD12, show the error message (S3) of " not having file ".In the time of on file Gn being placed on input pallet 30 (S2:Y), controller 60 is along CW direction drive motor 67.In this example structure and method, suppose that motor 67 rotates along the CW direction during reading images in beginning to be described.Yet motor 67 can be along CW or the rotation of CCW direction when the beginning reading images.The direction of rotation of motor 67 is relative concepts.
Controller 60 is along CW direction drive motor 67, and starts and rub paper solenoid 88 with the hands.Thereby shown in Figure 4 and 5, the epicyclic gearing 75 in the power drive mechanism 70 breaks away from from engaging mechanism 86, and planetary gear 79,80 can be rotated around sun gear 76 along the CCW direction, gives travelling gear 94 with transmission of power.Therefore, driven gear 95 rotates along the CW direction.When driven gear 95 when the CW direction is rotated, give arm 29 with transmission of power, arm 29 moves down.Thereby, push pickup roller 33 itself and the file Gn of input on the pallet 30 are contacted.In addition, by power drive mechanism 110 driven gear 95 is passed to pickup roller 33 and separate roller 34 along the rotation of CW direction, pickup roller 33 and separate roller 34 are fed into file G1 in the file feeding path 32 along the paper feed direction rotation.When a folded file Gn is placed on input pallet 30, directly be placed on file G1 below topmost file G2 may with its together feeding.Yet, because file G2 is by the separating pad restriction that is oppositely arranged with separate roller 34, can be from the independent stranding file G1 (S4) the folded file.
In file feeding path 32, by power drive mechanism 120 power is passed to intake roller 35A, 35B, 35C, 35D from motor 67, with exit roller 36, each roller rotates so that file Gn is delivered to the downstream from the upstream side in file feeding path 32 along paper feed direction.The file G1 that rubs with the hands and send into the feeding path 32 from input pallet 30 is clipped between intake roller 35A and the hold-down roller 37, at this revolving force is passed to file G1, and it is sent to the crossover location 40 in file feeding path 32.When having rubbed file G1 with the hands and be sent in the file feeding path 32, second front sensor 53 is connected.
When guiding trap 47 is closed feeding path from the input crossover location 40 of pallet 30 to file feeding path 32, wait that the file G1 that is sent to crossover location 40 begins to contact with the trap 47 that leads.As shown in figure 23, guiding trap 47 is promoted by the file G1 of feeding in file feeding path 32, upwards rotates in the drawings.Therefore, file feeding path 32 extends to from input pallet 30 and reads the position, and is closed to the path of two-way feed path 39 ends 41.In addition, be closed to the feeding path of the link position 38 in two-way feed path 39 by guiding trap 46.Therefore, the file G1 that arrives crossover locations 40 from the input pallet 30 in file feeding path 32 has been by 46,47 guiding of guiding trap, and is admitted to the position of reading in file feeding path 32.
The peripheral speed of intake roller 35A, 35B, 35C, 35D and exit roller 36 that the power that is transmitted by motor 67 by power drive mechanism 120 receptions rotates is provided with highly than the peripheral speed of the separate roller 34 that the power that is transmitted by motor 67 by power drive mechanism 110 receptions rotates.As shown in figure 23, rub and be sent to file G1 face contact separate roller 34 the file feeding path 32 with the hands from input pallet 30, and be sandwiched between intake roller 35A and the hold-down roller 37.As shown in Figure 9, utilize one-way clutch 112, separate roller 34 can along paper feed direction basically sky circle.Thereby, as shown in figure 24, together rotate with a peripheral speed with the separate roller 34 of file G1 face contact with by the file that intake roller 35A sends into, thus separate roller 34 idle running make with respect to axle 111 on paper feed direction forward.
As shown in figure 25, when input pallet 30 was rubbed with the hands and be completely fed into the file feeding path 32, it separated with separate roller 34 at the first file G1.The feasible like this separate roller that together rotates with file G1 stops idle running.As shown in figure 24, as the result of separate roller 34 lost motion operation, the copulational protuberance 118 of separate roller 34 with respect to the axle collar 117 of axle 111 along direction of feed forward.Though power is delivered to axle 111 from motor 67, separate roller 34 just can rotate when the axle collar 117 engages rotation with copulational protuberance 118.Thereby, just be sent in the file feeding path 32 up to separate roller 34 rotations with the second file G2 of separate roller 34 face contacts.On the contrary, the rotation of file G1 by intake roller 35A, 35B that is fed in the file feeding path 32 further is fed in the file feeding path 32.Thereby, be provided with the space along paper feed direction between the first file G1 and the second file G2, as shown in figure 25.If axle 111 just rotates when the axle collar 117 engages with copulational protuberance 118, the rotation of axle 111 is passed to separate roller 34, separate roller 34 rotates along paper feed direction.Therefore, as shown in figure 26, the second file G2 is fed in the file feeding path 32.In this way, file Gn can have been rubbed with the hands continuously and has been sent in the file feeding path 32 at a high speed at certain intervals, and need not to drive stranding paper solenoid 88.When the rear end of file G1 is passed as shown in Figure 5, disconnect second front sensor 53, and it is connected subsequently when the front end of the second file G2 passes as shown in figure 26.
As shown in figure 26, the file G1 that is admitted to is upset downwards at bend 32B place, connects when back transducer 54 detects the front end of file G1 on respect to paper feed direction.File G1 is with respect to the front end of paper feed direction, reads the position arriving during through a set time after back transducer 54 detects.When file G1 read the position with respect to the front end arrival of paper feed direction, controller 60 started image fetching units 22, and the image of execute file G1 reads (S5).File G1 passes in first mode towards image fetching unit 22 and reads the position, reads image on first of the file G1 by image fetching unit 22.When detecting file G1 with respect to the rear end of paper feed direction, back transducer 54 disconnects.Controller 60 after back transducer 54 disconnects during a set time image of image fetching unit 22 ends file G1 read.
Because motor 67 is along the rotation of CW direction, as shown in figure 27, guiding trap 50 is at the discharge tray 31 boot files G1s of link position 38 towards file feeding path 32.File G1 is clipped between exit roller 36 and the hold-down roller 37, is discharged to (S6) on the discharge tray 31 from file feeding path 32 then.When back transducer 54 detects file G2 with respect to the front end of paper feed direction and when connecting, controller 60 starts image fetching unit 22 after through a set time, and the image of execute file G2 reads.By after the file G2 idle running, separate roller 34 stops the rotation a set time, has rubbed the 3rd file G3 then with the hands and it is sent in the file feeding path 32.By repeating this operation, the file Gn that ADF3 will be placed on the input pallet 30 is sent in the file feeding path 32 continuously, makes image fetching unit 22 orders read each file Gn, and sequentially will finish the file Gn that image reads and be discharged in the discharge tray 31.
As shown in figure 20, after the final act Gk on being positioned over input pallet 30 was discharged from from file feeding path 32, controller 60 changed over CCW with the direction of rotation of motor 67 from the CW direction, and connected and rub paper solenoid 88 with the hands.By determining when second front sensor 53 detects the rear end of file Gk and disconnects whether first front sensor 52 disconnects, whether the file Gk that can determine to be placed in the input pallet on 30 is last file.When first front sensor 52 disconnects, can determine that file Gk is last file that is placed on the input pallet 30.When first front sensor 52 is connected, can determine to import and also have other file on the pallet 30.When the direction of rotation of motor 67 when the CW direction is transformed into the CCW direction and rubs paper solenoid 88 with the hands to connect, as shown in Figure 8, power is delivered to driven gear 95 from epicyclic gearing 75, and driven gear 95 is along the rotation of CCW direction, and axle 111 is along the direction rotation opposite with paper feed direction.The rotation of axle 111 is passed to arm 29, and arm 29 moves up, and paper feed roller 33 leaves from the spigot surface in file feeding path 32.Therefore, can insert file Gn next to be read, for example pass the bottom that paper feed roller 33 contacts with separate roller 34 up to it.Then, controller 60 stops motor 67, and finishes the image read operation with this single face read mode.
An embodiment of two-sided read mode operation is described below.Before feeding file Gn, shown in Figure 22 as what in the single face read mode, describe, guiding trap 50 is set so that file feeding path 32 extends to discharge tray 31 at link position 38 from reading the position.Guiding trap 46 is set reads the position so that file feeding path 32 extends to from input pallet 30 at crossover location 40.Guiding trap 47 is set so that file feeding path extends to the position of reading in file feeding path 32 from the end 41 in two-way feed path 39 at crossover location 40.
When " beginning " being read (S11:Y) when being input in the image read-out 1, can determine then whether file Gn is placed on the input pallet 30 (S12).Determine (S12:N) when not having file Gn to be placed on the input pallet 30 when controller 60, then on LCD12, show the error message (S13) of " not having file ".When file Gn is placed on the input pallet 30 (S12:Y), controller 60 is along CW direction drive motor 67.Instruction along CW direction turning motor 67 is stored among the RAM63 as direction of rotation information.
Controller 60 is along CW direction drive motor 67, and starts and rub paper solenoid 88 with the hands.Thereby shown in Figure 4 and 5, the epicyclic gearing 75 in the power drive mechanism 70 breaks away from from engaging mechanism 86, and planetary gear 79,80 can be rotated around sun gear 76 along the CCW direction, gives travelling gear 94 with transmission of power.Therefore, driven gear 95 rotates along the CW direction.When driven gear 95 when the CW direction is rotated, give arm 29 with transmission of power, arm 29 moves down.Thereby, pickup roller 33 and the file Gn face contact of importing on the pallet 30.In addition, by power drive mechanism 110 driven gear 95 is passed to pickup roller 33 and separate roller 34 along the rotation of CW direction, pickup roller 33 and separate roller 34 are fed into file G1 in the file feeding path 32 along the paper feed direction rotation.When a folded file Gn is placed on input pallet 30, be placed on file G1 topmost directly the below file G2 can with its together feeding.Yet, because the separating pad that is oppositely arranged with separate roller 34 restriction file G2, so can be from the independent stranding file G1 the folded file.
In file feeding path 32, by power drive mechanism 120 power is passed to intake roller 35A, 35B, 35C, 35D and exit roller 36 from motor 67, each roller rotates so that file Gn is delivered to the downstream from the upstream side in file feeding path 32 along paper feed direction.Rub and send into file G1 the feeding path 32 with the hands from input pallet 30, be clipped in intake roller 35A and revolving force passed between the hold-down roller 37 of file G1, and be sent to the crossover location 40 in file feeding path 32.When having rubbed file G1 with the hands and be sent in the file feeding path 32, second front sensor 53 is connected.
When guiding trap 47 is closed feeding path from the input crossover location 40 of pallet 30 to file feeding path 32, wait that the file G1 that is sent to crossover location 40 begins to contact with the trap 47 that leads.Shown in Figure 23 as what describe in the single face read mode, the file G1 that is sent in the file feeding path 32 promotes guiding trap 47 as upwards rotating among the figure.Therefore, file feeding path 32 extends to from input pallet 30 and reads the position, and is closed to the path of two-way feed path 39 ends 41.In addition, be closed to the feeding path of the link position 38 in two-way feed path 39 by guiding trap 46.Therefore, the file G1 that arrives crossover locations 40 from the input pallet 30 in file feeding path 32 has been by 46,47 guiding of guiding trap, and is admitted to the position of reading in file feeding path 32.
Identical with described in the single face read mode, the peripheral speed by receiving intake roller 35A, 35B, 35C, 35D and exit roller 36 that the power from motor 67 that transmitted by power drive mechanism 120 rotates is provided with highly than the peripheral speed of the separate roller 34 that rotates by the power that receives the motor 67 that is transmitted by power drive mechanism 110.Face contact separate roller 34 and be clamped at intake roller 35A and hold-down roller 37 between file G1 make separate roller 34 idle running.Result as separate roller 34 lost motion operation, between the first file G1 and the second file G2, produce the space along paper feed direction, controller 60 is in the timing of sending into file G2 or keeping before idle separate roller 34 rotates once more, and the direction of rotation of motor 67 is changed over the CCW direction from the CW direction.Controller 60 for example can according to detect file G1 front end at second front sensor 53 and connect after after second front sensor 53 detects the rear end of file G1 and disconnects in the past time or the revolution of motor determine the timing that change motor 67 rotates.
As shown in Figure 7, when the direction of rotation of motor 67 when the CW direction is transformed into the CCW direction, the support arm 78 of epicyclic gearing 75 can engage and remain on the disengaging configuration with engaging mechanism 86.Then, interrupt delivery is given the power of driven gear 95, and the axle 111 that supports separate roller 34 is stopped.
Shown in Figure 10 to 12, intake roller 35A, 35B, 35C and 35D and exit roller 36 that power drive mechanism 120 is given transmission of power along paper feed direction, and with the irrelevant to rotation direction of motor 67.Thereby even after the direction of rotation of motor 67 changes, file G1 also is fed on the file feeding path 32 towards reading the position by intake roller 35B.
When the CW direction converted CCW direction and power interruption mechanism 151 to and remains on epicyclic gearing 153 on the disengaging configuration, power drive mechanism 150 interrupted the transmission of power of driven gear 168 in the direction of rotation of motor 67.Therefore, two-way intake roller 43 stops.Power drive mechanism 170 make guiding trap 50 link position 38 turn in case in the direction of rotation of motor 67 when the CW direction is transformed into the CCW direction, file is directed on the two-way feed path 39.Guiding trap 47 turns back to position as shown in Figure 2 when passing crossover location 40 in the rear end of file G1.
As shown in figure 28, the file G1 that is transmitted puts upside down downwards at bend 32B place, and back transducer 54 is connected when detecting file G1 with respect to the front end of paper feed direction.File G1 is with respect to the front end of paper feed direction, reads the position arriving during through a set time after back transducer 54 detects.When file G1 read the position with respect to the front end arrival of paper feed direction, controller 60 started image fetching units 22, and the image of execute file G1 reads (S15).File G1 passes in first mode towards image fetching unit 22 and reads the position, reads image on first of the file G1 by image fetching unit 22.When detecting file G1 with respect to the rear end of paper feed direction, back transducer 54 disconnects.Controller 60 is read by the image of image fetching unit 22 ends file G1 during a set time after back transducer 54 disconnects.The image data storage that the file G1 that image fetching unit 22 reads is first is in the zone of RAM63.
As shown in figure 29, the file G1 that first face has been read is guided by guiding trap 50 with respect to the front end of paper feed direction, and this document G1 enters into two-way feed path 39 at link position 38 from file feeding path 32.The front end that two-way feed transducer 55 detects file G1 enters into two-way feed path 39 and connection.When two-way feed transducer 55 was connected, controller 60 started the solenoid 161 of turning back.When being drawn to file G1 in the two-way feed path 39, power interruption mechanism 151 separates with the support arm 156 of epicyclic gearing 153.As shown in figure 15, receive from motor 67 epicyclic gearing 153 along CCW direction transferring power, give driven gear 168 along the CW direction with transmission of power, two-way intake roller 43 rotates along lead.
When guiding trap 46 was closed from two-way feed path 39 to crossover location 40 feeding path, the front end that enters the file G1 in the two-way feed path 39 contacted with the trap 46 that leads when arriving crossover location 40.As shown in figure 29, guiding trap 46 is fed to that file G1 in the two-way approach 39 promotes with respect to the front end of direction of feed and along upwards position rotation among the figure.Thereby two-way feed path 39 extends to end 41 from link position 38, and is closed to the path that the position is read in file feeding path 32.In addition, the feeding path of the input pallet 30 in guiding trap 47 close file feeding paths 32.Therefore, the link position 38 from two-way feed path 39 arrives the front end of the file G1 of crossover locations 40 with respect to paper feed direction, by 46,47 guiding of guiding trap, and is fed in the two-way feed path 39 and can arrive file feeding path 32.File G1 is clamped between two-way intake roller 43 and the hold-down roller 44 with respect to the front end in paper feed path, owing to two-way intake roller 43 is fed on the end 41 in two-way feed path 39 along the lead rotation.
As shown in figure 30, cross the crossover location 40 in two-way feed path 39 and arrive fully at terminal 41 o'clock with respect to the rear end of paper feed direction at file G1, controller 60 converts the direction of rotation of motor 67 to the CCW direction from the CW direction.Disconnect when two-way feed transducer 55 detects the rear end of file G1 of feeding on two-way feed path 39, crossover location 40 is passed after the set time in the past in the rear end of file G1 then.Thereby, controller 60 determine file G1 crossed the crossover location 40 in two-way feed path 39 with respect to the rear end of paper feed direction and arrive fully terminal 41, for example by calculating utilize the detection signal of two-way feed transducer 55, by the feeding length or time of intake roller 35D and two-way intake roller 43 etc.When changing the direction of rotation of motor 67, be clamped between two-way intake roller 43 and the hold-down roller 44 and and turn back to crossover location 40 from the file G1 that end stretches out.
When the part of file G1 is supported by file support portion 42 when the end 41 in two-way feed path 39 reaches the ADF3 outside.When file G1 pass crossover location 40 and with guiding trap 46 when separate, the trap 46 that leads moves down and turns back to position (for example under its deadweight or action of gravity) as shown in Figure 2.
In the direction of rotation of motor 67 when the CCW direction is transformed into the CW direction, as shown in figure 14, so that power is delivered to driven gear 168 from motor 67, driven gear 168 rotates along the CCW direction epicyclic gearing 153 of power drive mechanism 150 along CW direction pivotal support arm 156.Therefore, two-way intake roller 43 rotates along Return-ing direction.In response, file G1 is sent back on the crossover location 40 on the two-way feed path 39 (S16).
Shown in Figure 10 to 12, regardless of the direction of rotation of motor 67, power drive mechanism 120 all passes to intake roller 35A, 35B, 35C, 35D and exit roller 36 with power along paper feed direction.Thereby even after the direction of rotation that changes motor 67, intake roller 35A, 35B, 35C, 35D and exit roller 36 also rotate along paper feed direction.
When the direction of rotation of motor 67 when the CW direction is transformed into CCW direction and engaging mechanism 86 and remains on epicyclic gearing 75 on the disengaging configuration, power drive mechanism 70 interrupt delivery are given the power transmission of driven gear 95.After this, when being not activated stranding paper solenoid 88, even epicyclic gearing 75 also remains on the disengaging configuration when motor 67 changes over the CW direction.When the CCW direction was transformed into the CW direction, power drive mechanism 170 was transformed into file is read the position of location guide to the discharge tray 31 from file feeding path 32 at link position 38 trap 50 that will lead in the rotation of motor 67.
As shown in figure 31, the file G1 that returns from two-way feed path 39 contacts with guiding trap 46 at crossover location 40.Regulate guiding trap 46 so that it can not move down from position as shown in the figure.Thereby the feeding path extends to the position of reading in file feeding path 32 from the end 41 in two-way feed path 39, and closes the feeding path of the link position 38 that leads to two-way feed path 39.In addition, guiding trap 47 is closed the feeding path of the input pallet 30 that leads to file feeding path 32.Thereby file G1 is sent to reading on the position of file feeding path 32 by the guiding of guiding trap 46,47 and from the end 41 in two-way feed path 39, and does not remove the link position 38 in two-way feed path 39 or the input pallet 30 in file feeding path 32.When file G1 turn back to from two-way feed path 39 file feeding path 32 read the upstream side of position the time, file G1 is sent back in the file feeding path 32, and the situation when being fed in the file paper feed path 32 for the first time with it is compared its front-end and back-end and put upside down.In this way, file G1 is sent back to.File G1 is fed in the file feeding path 32 towards the mode that reads the position with second.
By the file G1 that sent back to respect to the front end of paper feed direction arrive file feeding path 32 read the position of position upstream side the time, controller 60 is transformed into the CCW direction with the rotation of motor 67 from the CW direction.Power drive mechanism 120 is given intake roller 35A, 35B, 35C, 35D and exit roller 36 along paper feed direction with transmission of power, and with the irrelevant to rotation direction of motor 67.Thereby, even after the direction of rotation that changes motor 67, also still file G1 is delivered to the position of reading in file feeding path 32 by intake roller 35B.
In power drive mechanism 150, when with motor 67 when the CW direction is transformed into the CCW direction, the support arm 156 of epicyclic gearing 153 is along rotation of CCW direction and 151 engagements of power interruption mechanism, it is placed on disengaging configuration.Thereby, interrupting from epicyclic gearing 153 to driven gear 168 transmission of power, two-way feed roller 43 stops.Therefore, if be clamped between intake roller 35B and the hold-down roller 37 with respect to the front end of paper feed direction at file G1, the rear end is clamped under the situation between two-way intake roller 43 and the hold-down roller 44, and motor 67 changes direction of rotation, and then two-way intake roller 43 can not rotate along lead.Interrupted two-way intake roller 43, together rotated along Return-ing direction with the file G1 that utilizes intake roller 35B rotation to be admitted to from the transmission of power of motor 67.
In power drive mechanism 70, after engaging mechanism 86 remains on disengaging configuration with epicyclic gearing 75, even at motor 67 because rub that paper solenoid 88 is not activated with the hands when the CCW direction is rotated epicyclic gearing 75 still remain on the disengaging configuration.In power drive mechanism 170, when the direction of rotation of motor 67 when the CW direction is transformed into the CCW direction, guiding trap 50 is switched to the position that file can be directed to the two-way feed path 39 from file feeding path 32 at link position 38.
Shown in figure 32, when file G1 is detected and arrives when reading the position by back transducer 54 with respect to the front end of paper feed direction, controller 60 makes image fetching unit 22 read file G1 second (S17).The file G1 that second face has been read is directed to trap 50 guiding subsequently with respect to the front end of paper feed direction, enters into two-way feed path 39 at crossover location 38 from file feeding path 32.When file G1 is detected and arrives when reading the position by back transducer 54 with respect to the rear end of paper feed direction, the image that controller 60 finishes second of 22 couples of file G1 of image fetching units reads.The image data storage that the file G1 that is read by image fetching unit 22 is second is in the zone of RAM63.
Connect after detecting the front end of file G1 with respect to paper feed direction that enters into two-way feed path 39 when two-way feed transducer 55, controller 60 starts the solenoid 161 of turning back.Therefore, when along the two-way feed path during 39 traction file G1, power interruption mechanism 151 separates with the support arm 156 of epicyclic gearing 153.As shown in figure 15, received the epicyclic gearing 153 of motor 67 along the power of CCW direction, power is passed to driven gear 168 along the CW direction, two-way intake roller 43 rotates along lead.
Arrived the front end upwards promotion guiding trap 46 of the file G1 of crossover location 40 with respect to paper feed direction, identical with situation shown in Figure 29, file G1 leads to the end 41 of two-way approach 39 at crossover location 40.Identical with the situation shown in Figure 30, after the rear end of file G1 is passed the crossover location 40 in two-way feed path 39 and is gone to end 41 fully, controller 60 converts the direction of rotation of motor 67 to the CW direction to rotate two-way feed roller 43 along Return-ing direction from the CCW direction, and file G1 turns back to crossover location 40.Then, identical with situation among Figure 31, the file G1 that returns from two-way feed path 39 is directed to trap 46,47 guiding and is fed to the position of reading in file feeding path 32 from the end 41 in two-way feed path 39.Therefore, file G1 is sent in the file feeding path 32 once more, and its front end and rear end are reversed once more, just is under the situation that file G1 is fed to file feeding path 32 for the first time.
When power drive mechanism 120 no matter motor 67 direction of rotation how with power when paper feed direction passes to intake roller 35A, 35B, 35C, 35D and exit roller 36, intake roller 35A, 35B, 35C, 35D and exit roller 36 rotate along direction of feed.Because engaging mechanism 86 remains on disengaging configuration with epicyclic gearing 75, so power drive mechanism 70 interrupt delivery are given the transmission of power of driven gear 95.Power drive mechanism 170 is transformed in the direction of rotation of motor 67 and file is read the position of location guide to discharge tray 31 from file feeding path 32 when the CCW direction is transformed into the CW direction at link position 38 trap 50 that will lead.
After this, will pass the file G1 that reads the position and be directed to discharge tray 31 towards reading the position with first at link position 38, and make it first face down and be discharged to discharge tray 31 (S19) by exit roller 36 by guiding trap 50.In subsequent file G2 being placed on the input pallet on 30 the time (S20:Y), just when first front sensor 52 is arranged with this way of example, controller 60 starts subsequently rubs paper solenoid 88 with the hands, with engaging mechanism 86 with make power drive mechanism 70 power is delivered to from motor 67 driven gear 95 epicyclic gearing 75 support arm 78 engage releasing, and along paper feed direction rotation separate roller 34.Thereby the file G2 on 30 is sent in the file feeding path 32 in the input pallet with being placed on, and reads the image on file G2 two sides in the same manner as described above.
Identical with the situation of single face read mode, be placed on the final act Gk of input on the pallet 30 after file feeding path 32 is discharged to discharge tray 31, controller 60 changes over the CCW direction with the direction of rotation of motor 67 from the CW direction, and starts stranding paper solenoid 88.Thereby, as shown in Figure 8, power being passed to driven gear 95 from epicyclic gearing 75, driven gear 95 rotates along the CCW direction, axle 111 edge and the rightabout rotations of paper feed direction.The rotation of axle 111 is passed to arm 29, and arm 29 moves up, and separate roller 33 separates with the spigot surface in file feeding path 32.Therefore, ADF3 turns back to file Gn next to be read and can insert up to the state that passes the bottom that intake roller 33 contacts with separate roller 34.Then, controller 60 stops motor 67, and the image of two-sided read mode reads end.
In these exemplary construction and method, wish to be placed in the input pallet file Gn on 30 and discharge such hypothesis from discharge tray 31 in order and described the two-sided read operation that utilizes image read-out 1 based on the user.Yet, if do not need to make the order of the file Gn on being placed in the input pallet order of file Gn on 30 and being discharged to discharge tray 31 identical, then file Gn can be sent to towards the mode that reads the position with second and read the position, be not sent in the two-way feed path 39 then, but be sent in the discharge tray 31.Utilize this structure and configuration,, can omit the last operation that file is sent back to that is used for second overturning step, and can reduce two-sided reading the required time of file Gn though on discharge tray 31, do not keep the order of file Gn.
According to image read-out 1, power drive mechanism 70,120,150,170 shared driving gear 69 on the monomotor 67 driving output shafts and the travelling gears 71 that mesh with driving gear 69 of being arranged on.Power drive mechanism 120,150 passes to intake roller 35A to 35D and two-way intake roller 43 by the gear train separately that branches out from travelling gear 71 respectively with power, and separately the gear train of power drive mechanism 70,170 by branching out from the travelling gear 72,73 that is arranged on travelling gear 71 downstreams with respect to the power transmission direction passes to separate roller 34 and guiding trap 50 respectively with power.Thereby, in power drive mechanism 120,150, can obtain almost not have the power transmission of backlash.In addition, when power drive mechanism 70,170 when branch comes out from power drive mechanism 150, be controlled at the fluctuation of the load that produces in separate roller 34 or the guiding trap 50, so that it can not influence the fluctuation of intake roller 35A to 35D rotary speed.Therefore, can improve the file feed accuracy of intake roller 35A to 35D.
In power drive mechanism 70,120,150,170, be to constitute from the power transmission path that travelling gear 71,72,73 is sent to separate roller 34, intake roller 35A to 35D, guiding trap 50 and two-way feed roller 43 by the gear train that comprises a plurality of gears separately with power.Yet power transmission path is not limited to gear train.As other example, power transmission path can be made of single gear.
Read at image and to be provided with in 1, be formed with the two-way feed path 39 that is used for file Gn is sent back to file feeding path 32, so that its link position 38 from the downstream of reading the position in file feeding path 32 extends, and intersect at the crossover location 40 of the upstream side that reads the position.Yet this two-way feed path 39 is exemplary feeding paths, and file feeding path 32 and two-way feed path 39 are not limited among the embodiment shown here and described.Thereby, can be for example as requested two-way feed path, change guiding trap 46,47 or increase other guider.In addition, also can use elastically deformable film or other device as the guiding parts trap 46,47 that replaces leading.
Although described each side of the present invention in conjunction with said structure and method, but various distortion of the present invention, modification, improvement and/or substantial equivalent, known or still unknowable at present, be conspicuous for those of ordinary skills.Therefore, the above embodiments structure and method just attempt to explain, rather than are used for restriction.Can also comprise various distortion not breaking away within spirit of the present invention and the protection range.So, the present invention attempt to comprise all known or later on can detectable various distortion, modification, variant, improvement and/or substantial equivalent.

Claims (19)

1. feeder that is used for file or other sheet material comprises:
Inlet;
Outlet;
The feeding path of between described inlet and described outlet, extending;
Be used for along the feed system of described feeding path move or other material;
Subsystem; With
Be used to drive the drive system of described feed system and described subsystem, wherein said drive system is controlled described feed system and described subsystem, makes that at least some cases the operation of described feed system is independent of the operation of described subsystem.
2. feeder according to claim 1 also comprises:
From the two-way feed path portion that the part in described feeding path is extended, wherein said subsystem comprises:
Feed system is used for file or other material are moved to described feeding path from described inlet; With
The bi-directional drive system is used for the move along described two-way feed path portion.
3. feeder according to claim 1 also comprises:
From the two-way feed path portion that the part in described feeding path is extended, wherein said subsystem comprises:
The bi-directional drive system is used for along described two-way feed path portion's move or other material.
4. according to claim 2 or 3 described feeders, also comprise:
Be used for controlling the two-way feed path metering-in control system that enters described two-way feed path portion.
5. feeder according to claim 4, wherein said drive system is also controlled described two-way feed path metering-in control system, make that the operation of described feed system is independent of the operation of described two-way feed path metering-in control system at least some cases.
6. feeder according to claim 1, wherein said subsystem comprises:
Feed system is used for file or other material are moved to described feeding path from described inlet.
7. feeder according to claim 1 also comprises:
From the two-way feed path portion that the part in described feeding path is extended, wherein said subsystem comprises:
Two-way feed path metering-in control system is used for controlling the described two-way feed path portion that enters.
8. according to each described feeder in the claim 2 to 7, wherein said drive system comprises motor, and regardless of the direction of rotation of described motor, it all rotates the intake roller that is included in the described feed system along first direction.
9. according to each described feeder in the claim 2 to 8, wherein said drive system comprises the independent motor that is used to drive described feed system and described subsystem.
10. feeder according to claim 9, wherein, under the duplex scanning pattern, described feed system moves described file or other material in discontinuous mode, and under the single-sweep pattern, described feed system moves described file or other material with continuous, non-stop mode.
11. according to claim 9 or 10 described feeders, wherein, under the single-sweep pattern, described feed system moves described file or other material with continuous, non-stop mode.
12. the method for a feeding file or other sheet material comprises:
Receive the input of indication feeding pattern, wherein available feeding pattern comprises single face feeding pattern and two-sided feeding pattern; With
According to indicated feeding pattern, along feeding path feeding file or other sheet material between inlet and the outlet, wherein:
(a) when the indication be single face feeding pattern the time, described file or other sheet material move through described feeding path in a continuous manner, and
(b) when indication be two-sided feeding pattern the time, described file or other sheet material move through described feeding path in discontinuous mode; And wherein said feeding comprises:
Utilize a plurality of intake rollers of motor driven, with along the described file of described feeding path movement or other sheet material, wherein regardless of the direction of rotation of described motor, described motor all can rotate described a plurality of intake roller along first direction.
13. method according to claim 12, wherein when indication be two-sided feeding pattern the time, described method comprises along two-way feed path portion and moves described file or other sheet material with described file or other sheet material of overturning.
14. method according to claim 13, wherein along of the feeding of described feeding path to described file or other sheet material, and along described two-way feed path portion to the moving of described file or other sheet material, described file or other sheet material are moved in the effect that is included in the actuating force that independent motor provides down.
15., also comprise according to claim 12,13 or 14 described methods:
According to what indicate selection is the single face feeding pattern or the described input of two-sided feeding pattern, and control enters the two-way feed path portion of extending from the feeding path.
16. method according to claim 15, wherein when indication be two-sided feeding pattern the time, allow to enter described two-way feed path portion, and when indicate be single face feeding pattern the time, do not allow to enter described two-way feed path portion.
17. according to claim 15 or 16 described methods, the structure that wherein is used for feeding and control is driven under the effect of the actuating force that is provided by independent motor.
18., also comprise according to each described method in the claim 12 to 17:
With described file or other sheet material from supplying with the described inlet that the position is fed into described feeding path.
19. method according to claim 18 wherein is used for described file or other sheet feeding are driven under the effect of the actuating force that is provided by independent motor to described inlet and along the structure of the described file of described feeding path feeding or other sheet material.
CN200610159928.XA 2005-09-26 2006-09-26 Document or sheet material feeder Active CN1941832B (en)

Applications Claiming Priority (12)

Application Number Priority Date Filing Date Title
JP2005-278076 2005-09-26
JP2005278076A JP4165544B2 (en) 2005-09-26 2005-09-26 Sheet material transport device
JP2005278966 2005-09-26
JP2005278076 2005-09-26
JP2005278966A JP4207944B2 (en) 2005-09-26 2005-09-26 Sheet material transport device
JP2005-278966 2005-09-26
JP2005-282392 2005-09-28
JP2005282392 2005-09-28
JP2005282392A JP4165545B2 (en) 2005-09-28 2005-09-28 Sheet material transport device
JP2005-302378 2005-10-17
JP2005302378A JP4165550B2 (en) 2005-10-17 2005-10-17 Document feeder
JP2005302378 2005-10-17

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CN101686300B (en) * 2008-09-26 2011-12-21 兄弟工业株式会社 Document feeder and document scanning device provided with the same
CN102514398A (en) * 2010-08-20 2012-06-27 精工爱普生株式会社 Roll-like medium feeding apparatus and recording apparatus
CN104044363A (en) * 2013-03-15 2014-09-17 精工爱普生株式会社 Media processing device and conveyance unit for reversing paper
CN110784612A (en) * 2018-07-31 2020-02-11 精工爱普生株式会社 Medium feeding device and image reading device
CN113574462A (en) * 2019-03-21 2021-10-29 惠普发展公司， 有限责任合伙企业 Scanner capable of flat scanning with image reading unit arranged on upper unit

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CN101520622B (en) * 2008-02-29 2011-09-28 兄弟工业株式会社 Document feeding device
CN101686300B (en) * 2008-09-26 2011-12-21 兄弟工业株式会社 Document feeder and document scanning device provided with the same
CN102514398A (en) * 2010-08-20 2012-06-27 精工爱普生株式会社 Roll-like medium feeding apparatus and recording apparatus
CN102514398B (en) * 2010-08-20 2016-08-17 精工爱普生株式会社 Roll-like medium feeding apparatus and recording equipment
CN104044363A (en) * 2013-03-15 2014-09-17 精工爱普生株式会社 Media processing device and conveyance unit for reversing paper
CN104044363B (en) * 2013-03-15 2016-07-13 精工爱普生株式会社 Media processing apparatus and paper reversion delivery unit
CN110784612A (en) * 2018-07-31 2020-02-11 精工爱普生株式会社 Medium feeding device and image reading device
CN113574462A (en) * 2019-03-21 2021-10-29 惠普发展公司， 有限责任合伙企业 Scanner capable of flat scanning with image reading unit arranged on upper unit

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