CN100372750C - Paper feeder - Google Patents
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- CN100372750C CN100372750C CNB021316279A CN02131627A CN100372750C CN 100372750 C CN100372750 C CN 100372750C CN B021316279 A CNB021316279 A CN B021316279A CN 02131627 A CN02131627 A CN 02131627A CN 100372750 C CN100372750 C CN 100372750C
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Abstract
A sheet feeding apparatus is formed of a sheet supply device for feeding sheets drawn out from a sheet supply tray, a separating device for separating the sheets drawn out from the sheet supply tray, a transport device for transporting the sheets downstream, a transport path formed between the sheet supply device and the transport device and having first and second transport paths, and follower rotating bodies. The first transport path guides sheets fed from the sheets supply device in a substantially tangential direction of the nipping point, and the second transport path guides sheets from the first transport path toward the transport device after bending from the substantially tangential direction to the separating device. The follow rotating bodies are protrudingly arranged from the separating device in the transport path, between a curved portion extending from the first transport path to the second transport path and the nipping point.
Description
Technical field
The present invention relates to electrophotographic copier, facsimile apparatus in the chopping machine etc., is used to supply with the paper feeder of paper.
Background technology
In the past, as this paper feeder, people know to be had such as, the form of structure shown in Figure 8 (with reference to No. 2504655 utility model patent document of Japan).This paper feeder comprises sheet feed stacker 60, the folded paper of having put down on this sheet feed stacker 60; Pickup roller 61, this pickup roller 61 contacts with folded bottom surface of putting down paper on this sheet feed stacker 60, and it is carried out dispatch; Paper feed roller 62 and separating pad 63, this paper feed roller 62 and separating pad 63 are arranged at the downstream of this pickup roller 61; Drive access 64, this drive access 64 is in the downstream near this paper feed roller 62, towards descending to side, crooked sharp, in the curve 65 in this drive access 64, be provided with dummy roll 66, in addition, in downstream, be provided with the transfer roller 67a that has barrier effect simultaneously, 67b near above-mentioned dummy roll 66.Above-mentioned separating pad 63 flexibly pushes paper feed roller 62 from upper side, between itself and paper feed roller 62, one by one will separate by the paper of pickup roller 61 dispatch.Separated paper is sent into counter-rotating spatial portion 68 and straightaway guide part 69 by paper feed roller 62, and then, by transfer roller 67a, after the 67b clamping, by transfer roller 67a, 67b is sent on the platen 70.Passing through transfer roller 67a, when 67b transmitted paper, at the upstream side of drive access 64, paper was in the state by paper feed roller 62 and separating pad 63 clampings.Thus,, produce bigger transmission resistance, still,, the transmission resistance is reduced, prevent the friction of paper surface, situations such as the damage of reading images owing to be arranged at the effect of the dummy roll 66 at above-mentioned curve 65 places to the paper in the transport process.
But, owing to above-mentioned paper feeder is so-called modus ponens down, wherein, from nethermost paper, supply with folded paper of putting down on sheet feed stacker 60, so, have following problems, promptly supplying with many occasions that draft is such, final page from draft, carry out paper supply, initial page is surplus to the end, and the state of supply of draft is difficult to grasp.So, make above-mentioned paper feeder also be suitable for the uppermost paper of putting down on sheet feed stacker 60 in reply from folded, carry out the so-called occasion that requires that goes up modus ponens of paper supply, must adopt following proposal, that is, paper feed roller 62 is arranged at the top side, separating pad 63 is pressed on the paper feed roller 62 from lower side.
Yet in the occasion that separating pad 63 is arranged at the bottom side of paper feed roller 62, above-mentioned transmission resistance forms downward power and directly acts on the separating pad 63, can't suitably obtain the thrust pressure of relative paper feed roller 62, or separating pad itself descends.In such occasion, have following danger, that is, the function that will one by one separate from next paper of pickup roller 61 dispatch suffers damage, or in the transport process of paper, produces the so-called coincidence of sending into following a piece of paper and transmit phenomenon.
So, the object of the present invention is to provide a kind of paper feeder, this paper feeder can prevent the malsegregation of paper really and overlap situation about transmitting.
Summary of the invention
In order to solve above-mentioned problem, paper feeder of the present invention is characterised in that it comprises paper-feeding mechanism, and this paper-feeding mechanism is supplied with the paper from the sheet feed stacker dispatch; Separation device, this separation device presses on this paper-feeding mechanism in the mode that can leave, between itself and above-mentioned paper-feeding mechanism, separates the paper from the sheet feed stacker dispatch; The paper that connecting gear, this connecting gear will be in by above-mentioned paper-feeding mechanism and separation device clamp position is sent to the downstream; Drive access, this drive access is formed between above-mentioned paper-feeding mechanism and the above-mentioned connecting gear, this drive access comprises the 1st drive access and the 2nd drive access, the 1st drive access leads to the paper of supplying with from above-mentioned paper-feeding mechanism along the basic tangential direction of the bite of above-mentioned paper-feeding mechanism and separation device, the 2nd drive access will be from the paper of above-mentioned the 1st drive access from above-mentioned basic tangential direction, bend to the separation device side, then, it is sent to above-mentioned connecting gear; The idle running swivel, this idle running swivel forwards in the curve and the drive access between the bite of the 2nd drive access according to from the 1st drive access, and the mode side-prominent from separation device is provided with.
According to the present invention who forms by such scheme, because basic tangential direction along the bite of above-mentioned paper-feeding mechanism and separation device, curve is set, the idle running swivel is arranged in the drive access between above-mentioned curve and the bite, so dummy roll bears the transmission resistance of draft, the load of the paper at above-mentioned curve place is alleviated, in addition, on separation device, the direction along leaving with the paper supply direction does not produce pulling force.Thus, the thrust pressure of separation device does not change, and can prevent the situation that the coincidence of the malsegregation of the paper that separation device causes and paper transmits really.
Best, above-mentioned curve is arranged near the downstream of above-mentioned bite.Because this mode of employing then makes from above-mentioned bite, the transmission distance shortening to connecting gear is shortened whole drive access.
In addition, best, in above-mentioned the 2nd drive access, be provided with and make 2nd curve of paper bending in the connecting gear side, the 2nd idle running swivel also is set in this curve, the 2nd idle running swivel is inner outstanding to above-mentioned drive access from the inboard of this curve.Owing to adopt this mode, then can along the direction that is fit to, supply with paper towards connecting gear, and the further transmission resistance of attenuative effect on paper.
In addition, in the present invention, best, above-mentioned paper-feeding mechanism, idle running swivel and connecting gear are formed by the roller more than at least 1 respectively, according to the basic center from the Width of paper feed roller, the linearity along the direction of transfer of paper is provided with dummy roll and the transfer roller that has at least 1 separately respectively.Like this, because on the straight line of center that connects paper feed roller and transfer roller, be provided with and alleviate the 1st dummy roll and the 2nd dummy roll that transmits resistance, thus can be when adopting transfer roller transmission paper, reduce to act on the load on the paper at curve place effectively.
Also have, best, be the summit in basic center with the Width of above-mentioned paper-feeding mechanism, on leg-of-mutton two limits of basic both ends bonded assembly with the paper width direction of this summit and connecting gear, be provided with above-mentioned dummy roll.Owing to adopt the arrangement of such roller, so can more further reduce to act on load on the paper at curve place effectively.
Description of drawings
Fig. 1 is the inside composition diagram of paper feeder of the present invention;
Block diagram when Fig. 2 opens for the lid of sheet feed stacker end face;
The enlarged drawing that Fig. 3 forms for the main portion of expression paper feeder of the present invention;
Fig. 4 forms the scheme drawing that the position is set of each roller of drive access for expression;
The partial perspective view of an embodiment that Fig. 5 reads the limiting part of position for the expression draft;
Fig. 6 is the cutaway view of expression distortion example of the present invention;
Fig. 7 is the cutaway view of expression distortion example of the present invention;
Fig. 8 is the inside composition diagram of an example of expression paper feeder of manuscript in the past.
The specific embodiment
Below with reference to the accompanying drawings, the embodiment to feeder of the present invention specifically describes.Fig. 1 is the inside composition diagram that is installed on an embodiment of the paper feeder of manuscript on the draft reader, the block diagram when Fig. 2 opens for the lid of the dish end face of paper feeder of manuscript.In addition, the enlarged drawing that Fig. 3 forms for the main portion of expression paper feeder of the present invention, Fig. 4 forms the scheme drawing that the position is set of each roller of drive access for expression, and Fig. 5 reads the partial perspective view of an embodiment of the limiting part of position for the expression draft.
The paper feeder of manuscript 1 of present embodiment comprises the draft supply unit as shown in Figure 1, and this draft supply unit will one by one separate as folded draft of putting down the paper on sheet feed stacker 2, and it is supplied with; Transport unit, the draft that this transport unit will have been supplied with, the draft that is sent to platen 4 reads position 5, and the draft that will read reads position 5 from draft and sends; Row's paper portion, this row's paper portion is used to discharge the draft after draft reads.
Above-mentioned draft sheet feed section comprises sheet feed stacker 2 as depicted in figs. 1 and 2, and this sheet feed stacker 2 is used to stack draft; Pickup roller 6, this pickup roller 6 presses the end face that stacks the draft on above-mentioned sheet feed stacker 2, carries out dispatch to being positioned at uppermost draft; Paper feed roller 7 and separate roller 8, this paper feed roller 7 and separate roller 8 one by one separate the draft by above-mentioned pickup roller 6 dispatch.Above-mentioned pickup roller 6 can pass through connecting arm 9, is connected with paper feed roller 7 in the mode that can swing, and in addition, two rollers can be by the free-wheel clutch that can only rotate along a direction, forward and reverse rotation.The spring members 10 of above-mentioned separate roller 8 by pushing away from lower side is with mode and paper feed roller 7 Elastic Contact that can leave.On separate roller 8, be provided with torque indicator.In addition, if between this separate roller and paper feed roller 7, send into the draft more than 2, then above-mentioned torque indicator effect, separate roller 8 is fixing, one by one separate draft, after being separated into 1, it is followed paper feed roller 7 and rotates.
Above-mentioned sheet feed stacker 2 is provided with according to the mode that has a down dip towards the paper supply side direction, and it is covered by lid 15 to be opened/closed.In addition, above-mentioned pickup roller 6 and paper feed roller 7 are arranged at the inside of the recess 16 of the bottom surface pars intermedia that is opened in this lid 15.In addition, on sheet feed stacker 2, be provided with the guide plate 11 that slides along the draft Width.The size of the Width of these guide plate 11 restriction drafts, in its both sides, the upright sidepiece guide 12 that is provided with the both sides of restriction draft.In the present embodiment, sidepiece guide 12 extends to the place ahead along the both side ends of guide plate 11, near the paper feed ports 13 in the downstream of its front end arrival pickup roller 6.In addition, in the front bottom end of sidepiece guide 12, form direction protrusion 12a, this direction protrusion 12a slides along the guide groove 19 of the end face that is opened in sheet feed stacker 2.In addition, on the top of sidepiece guide 12, be provided with the end face restricted guidance spare 14 of the end face of restriction draft.This end face restricted guidance spare 14 is according to the top from sidepiece guide 12, and towards the inboard, the outstanding mode of along continuous straight runs forms, basic midway location from sidepiece guide 12, crooked slightly, meanwhile, extend to vicinity continuously by the draft dispatch position of pickup roller 6.
As aforementioned, by sidepiece guide 12 being extended to the downstream of pickup roller 6, before by paper feed roller 7 clampings, the both sides of restriction draft.Particularly, because the front of sidepiece guide 12 is by guide groove 19 constraints, so make sidepiece guide 12 when left and right directions slides, from front end,, locate as the crow flies along the draft direction of the supply substantially to the rear end, more positively, the both sides of draft are limited by sidepiece guide 12.In addition, by above-mentioned restricted guidance spare 14 being arranged at the dispatch position of draft, guarantee the paper feed ports 13 of draft, when dispatch has the draft etc. of curling defective, can pass through end face restricted guidance spare 14, the restriction both sides gradually on push away, does not throw off with the spigot surface of sidepiece guide 12 both sides of draft, so can suppress the deflection of this draft.
In addition, in the present embodiment, as depicted in figs. 1 and 2,, be provided with draft face crimping guide 17 at the midway location of pickup roller 6 with paper feed roller 7.This crimping guide 17 is formed from covering the outstanding guiding rib in 15 bottom surface by front end, in the bottom of this guiding rib, is formed with the spigot surface 18 at the lopsidedness of pickup roller 6.Draft face crimping guide 17 even under the curling upward such situation of front end of the draft that passes through pickup roller 6 dispatch, above-mentioned draft is contacted with the spigot surface 18 of above-mentioned draft face crimping guide 17, is sent to paper feed roller 7 sides with it.In addition, even under the situation of the rear end of draft,, still guarantee stable transmission because the rear end of draft contacts with the spigot surface 18 of draft face crimping guide 17 by the bite of paper feed roller 7 and separate roller 8.Particularly, as thicker draft, under the situations such as occasion of the draft that hardness is bigger, takeofing of the rear end by pinning draft can suppress the applying of the rear end of draft really in transmission.
In above-mentioned transport unit, downstream at above-mentioned paper feed roller 7, be provided with drive access, this drive access is used for the draft that will supply with, the draft that is sent on the platen 4 that is arranged in the paper feeder of manuscript reads position 5 (specifically, be the draft reading mechanism of the below by being arranged at platen, draft from platen by the time, draft is read the position of processing).This drive access comprises drive access 20, and this drive access 20 with its counter-rotating, sends it to draft and reads position 5 in the draft bending; Row's paper path 21, these row's paper path 21 transmission have been passed through draft and have been read the draft of position 5.
Above-mentioned drive access 20 as shown in Figure 3, the outside guide plate 22 that forms by the inside bend towards this paper feeder forms with inboard guide plate 23, from paper feed roller 7, the transfer roller 24,25 to the upstream side that is arranged at platen 4 leads to draft.In addition, above-mentioned drive access 20 comprises the 1st drive access 23a, and the 1st drive access 23a is along the basic tangential direction S of the bite 32 of above-mentioned paper feed roller 7 and separate roller 8, and P leads to draft; The 2nd drive access 23b, 23c, the 2nd drive access 23b, 23c extends to the downstream of the 1st drive access 23a, will be from the draft P of above-mentioned the 1st drive access 23a transmission, from above-mentioned basic tangential direction S, at separate roller 8 one lateral bending songs, be sent to transfer roller 24,25 places then.Near the downstream of the bite 32 between above-mentioned paper feed roller 7 and the separate roller 8, from the 1st drive access 23a, forward the position of the 2nd drive access 23b to, be provided with the 1st curve 30, at the 1st curve 30, be provided with dummy roll 26, this dummy roll 26 is from interior side guide piece 23 sides, and is inner outstanding at drive access 20, according to identical with bite 32 basically height (on the line S2 of bite 32), P contacts with draft, realizes rotation (follow draft and move).At above-mentioned the 2nd drive access 23b, the basic midway location of 23c is provided with the 2nd curve 31, the 2 curves 31 and makes draft P in the transmission further towards the inside bend of drive access 20.In addition, on the 2nd curve 31, be provided with the 2nd dummy roll 27 as hereinbefore equally, it is from interior side guide piece 23 sides, and is outstanding slightly in drive access 20 inside.In addition, transfer roller 24,25 is arranged at the downstream of paper feed roller 7, and is positioned at than paper feed roller 7 and will leans on separate roller 8 one sides.
The design item of degree for selecting of the bending of above-mentioned the 1st curve 30 and the 2nd curve 31 at each paper feeder, but from the viewpoint of the length of the drive access that shortens whole paper feeder as much as possible, best, above-mentioned degree of crook is bigger.In addition, best from the aspect of the length that shortens the 1st drive access 23a, the position of above-mentioned the 1st curve 30 is as much as possible near the downstream position of paper feed roller 7 with the bite 32 of separate roller 8.Like this, by the 1st curve 30 being arranged near the downstream of bite 32, at the 1st curve 30 places, the 1st dummy roll 26 is set, thus can not with situation that interior side guide piece 23 contacts under, between bite 32 and the 1st dummy roll 26, transmit draft P, such as, the curling such occasion of front end at draft P, or in the supply process of thin draft, still can directly be cross over the 1st dummy roll 26 from bite 32, the front end of draft P is by crooked with contacting of inboard guide plate 23, after this crooked state transmits this draft, can reduce transmission fault by transfer roller 24,25 clampings.In addition, in downstream, be provided be used for guide piece 28 that draft P is led on platen 4 near above-mentioned transfer roller 24,25.
Therefore, as shown in Figure 3, the draft P that separates one by one between paper feed roller 7 and separate roller 8 is sent to the 1st drive access 23a and the 2nd drive access 23b by paper feed roller 7,23c inside, and then, on platen 4, transmit then by transfer roller 24,25 clampings, but passing through transfer roller 24, during 25 transmission, at the upstream side of drive access 20, draft P is in the state that is held between paper feed roller 7 and the separate roller 8.Thus, the draft P in transmitting produces downward transmission resistance, and this power is particularly bigger at curve 30,31 places at 2 positions.But, the 1st curve 30 is positioned at the tangential direction S of above-mentioned bite 32, bears transmission resistance from draft P at the 1st curve 30, the 1 dummy rolls 26, therefore, not inciting somebody to action downwards, the power of (with the direction opposite sense of pushing towards paper feed roller 7) directly acts on the separate roller 8.Consequently, can prevent that the thrust pressure of separate roller 8 from changing, or separate roller 8 leaves with paper feed roller 7.Also have, owing to, be provided with dummy roll 26 respectively at curve 30,31 places at above-mentioned 2 positions, 27, so alleviate the contact friction at above-mentioned curve 30,31 places, transmission load to draft P is less, suppresses the friction on draft surface, prevents the deflection when draft transmits in addition.
In the present embodiment, above-mentioned relatively paper feed roller 7, the relation that is provided with of dummy roll 26,27 and transfer roller 24 is as shown in Figure 4.That is, paper feed roller 7 and the 1st dummy roll 26 are formed by single roller respectively, and the 2nd dummy roll 27 and transfer roller 24 are respectively by forming along draft Width 3 rollers side by side.In the 2nd dummy roll 27, the length of middle roller 27b greater than about roller 27a, 27c, its length is substantially equal to the 1st dummy roll 26.In addition, 3 transfer roller 24a, 24b, 24c all adopt identical shape.In the present embodiment, the 1st dummy roll 26, the 2nd dummy roll 27b of midway location and the corresponding pars intermedia of transfer roller 24b are positioned at the center 7a from paper feed roller 7, on the straight line T that extends along the direction of transfer of draft, in addition, above-mentioned the 1st dummy roll 26 and about the 2nd dummy roll 27a, the center 7a that 27b is positioned at paper feed roller 7 is the summit, connect this summit and about transfer roller 24a, leg-of-mutton two limit H1 of 24c are on the H2.One of them transfer roller 25 is not shown in the drawings, still, since paired with above-mentioned transfer roller 24, so it describes omission.
By above-mentioned transfer roller 24,25, the occasion of extracting drafts out from paper feed roller 7 is from above-mentioned paper feed roller 7, on the straight line T that extends along the draft direction of transfer, with service load on draft at utmost.Thus, as aforementioned, by on the straight line T of center 7a that connects paper feed roller 7 and transfer roller 24b, setting alleviates the 1st dummy roll 26 and the 2nd dummy roll 27b that transmits resistance, the load of attenuative effect on draft consequently, prevents the draft deflection effectively.In addition, because draft is also by the transfer roller 24a about arranging along the draft Width, 24c, transmit, so, on the H2, the 1st dummy roll 26 and the 2nd dummy roll 27a are set by the above-mentioned leg-of-mutton both sides H1 that transmits resistance is arranged in effect, 27b, the further load of attenuative effect on draft.
Row's paper path 21 as shown in figures 1 and 3, by downstream end from platen 4, form towards bevelled top side, top guide plate 40 and bottom side guide plate 41, it is linearly basically, in its downstream end, be provided with a pair of exit roller 43,44, this will be displaced in the paper disc 42 by the draft that draft reads the position exit roller 43,44.In addition, in the downstream that is right after platen 4, be provided with and take up guiding parts 45, this is taken up guiding parts 45 and is used for mode according to bending, will read the draft that has read position 5 at the draft of platen 4 and take up, with its row's of being sent to paper path 21.As shown in Figure 3, take up on the guiding parts 45 at this, be formed with spigot surface 46, this spigot surface 46 tilts towards above-mentioned bottom side guide plate 41 continuous modes according to the downstream from platen 4, along this spigot surface 46, draft is led.
Like this, passing through above-mentioned platen 4, from transfer roller 24,25, arrive exit roller 43, between 44, form crooked path,, be provided with thin film component by above-mentioned platen 4 and the above-mentioned sweep of taking up guiding parts 45 qualifications, this thin film component is the draft that is transmitted, towards the end face of above-mentioned platen 4 with take up guiding parts 45 and press.
This thin film component such as Fig. 3 and shown in Figure 5 are formed by polyester sheet 51, and this polyester sheet 51 reads the upstream side of position 5 from the draft of above-mentioned platen 4, and the spigot surface 46 along taking up guiding parts 45 extends longer size, until the half-way of row's paper path 21.This polyester sheet 51 is that the mylar of 0.1mm forms by thickness, one end of its upstream side is fixed on the cradle portion 53 of the limiting part 52 that will describe the back, the other end in downstream is in free state, along the dip plane 46 of taking up guiding parts 45, the part of the row's of extending to paper path 21 contacts with bottom side guide plate 41.Above-mentioned polyester sheet 51 also can form according to the mode of the part of the Width of the draft that transmitted of pushing, and is still best, as shown in Figure 5, according to the mode of the whole draft of pushing, forms with the size of broad.That is, best, form according to mode greater than the width of the maximum draft of handling by manuscript transfer device.
By limiting part shown in Figure 5 52, limit above-mentioned polyester sheet 51 moving towards the top.This limiting part 52 comprises rectangular basically plate-like portion 54, and this plate-like portion 54 covers polyester sheet 51 from the top; Cradle portion 53, this cradle portion 53 is with the fixing above-mentioned polyester sheet 51 of bonding way; Restriction face 58, this restriction face 58 are formed on the end face with the opposite side of this cradle portion 53, extend along the draft Width; Alignment tabs 55, this alignment tabs 55 is from the two ends of this restriction face 58, and guiding parts 45 1 is side-prominent towards taking up, and the longitudinal wall sheet 56 that erects from the left and right sides of plate-like portion 54 is supported on the paper feeder of manuscript main body by axle in the mode that can swing.In addition, under the effect that is arranged at the spring members 57 between limiting part 52 and the paper feeder of manuscript, 58 1 sides of the restriction face in the limiting part 52 flexibly are biased to platen 4 one sides.In addition, because 52 effects have above-mentioned such bias force to limiting part, so above-mentioned alignment tabs 55 can contact with the part of the spigot surface 46 of taking up guiding parts 45, will limit face 58, be positioned apart from the position of spigot surface 46 prescribed distance S, polyester sheet 51 is inserted in this interval S.
Therefore, in downstream from platen 4, when draft being taken up on the sweep of guiding parts 45, or during in row's paper path 21, transmitting draft, even, act on and to push away on the polyester sheet 51 under the situation of such power, because by restriction face 58 from draft, push away on the prevention polyester sheet 51, so polyester sheet 51 is still non-rising.In addition, owing to, when draft is pushed back, transmit draft,, successfully draft is delivered to the inside of row's paper path 21 so can transmit draft along the spigot surface 46 of taking up guiding parts 45 by polyester sheet 51.
Effect to the paper feeder of manuscript 1 that formed by said modules is described below.As depicted in figs. 1 and 2, draft P is positioned on the sheet feed stacker 2, makes guide plate 11 along horizontally slipping, by sidepiece guide 12, the both sides of restriction draft.If the draft on the sheet feed stacker 2 arrives by the emptying sensor, then make driving motor along forward drive, pickup roller 6 carries out dispatch to the draft of end face and handles in the end face that pushes draft at full tilt.This draft of dispatch in the restriction that is subjected to sidepiece guide 12 and end face restricted guidance spare 14, be sent to paper feed ports 13, at this state, it is by paper feed roller 7 and separate roller 8 clampings.By along and the paper feed roller 7 that rotates of pickup roller 6 equidirectionals, and the separate roller 8 that flexibly pushes from the bottom side one by one separates draft really, when separate roller 8 is followed paper feed roller 7 rotations, this draft is supplied to the inside of drive access 20.
As shown in Figure 3, if the front end of draft P that supplies to drive access 20 then makes the rotation of paper feed roller 7 and pickup roller 6 stop by transfer roller 24,25 clampings, then,, this draft is sent by the conveying capacity of transfer roller 24,25.At this moment, draft P is in the state by paper feed roller 7 and separate roller 8 clampings, owing to it is pulled out from this bite 32, so particularly at curve 30,31 places at 2 positions, on draft P, effect has excessive load.But, as aforesaid, because the 1st dummy roll 26 is arranged at the 1st curve 30 places near the downstream of paper feed roller 7, thus alleviate load on the draft P at these curve 30 places, successfully to its transmission.In addition, owing on separate roller 8, do not produce downward pulling force, so the thrust pressure of separate roller 8 does not change.In addition, owing on the 2nd curve 31, be provided with the 2nd dummy roll 27,, waltz through transfer roller 24,25 and carry out the draft transmission so also alleviate the load of the draft P at these curve 31 places.In addition, because the 1st curve 30 is arranged at the downstream near paper feed roller 7, thus, also make the contraction in length of the 1st drive access 23a.
By above-mentioned transfer roller 24,25, the draft that moves on the 1st drive access 20 is by guide piece 28 that is positioned at the downstream that is right after transfer roller 24,25 and polyester sheet 51 guiding, and the draft that is sent on the platen 4 reads position 5.In addition, thrust pressure by polyester sheet 51, the draft that has carried out reading processing here is pushed on the spigot surface 46 of taking up guiding parts 45, meanwhile, this draft is taken up, at this state, this draft is delivered to row's paper path 21 inside, by exit roller 43,44, on the row's of sending it to paper disc 42.
Also have, in the above-described embodiments, to having from paper feed roller 7, the paper feeder of manuscript of Wan Qu drive access is described to the lower side, and as shown in Figure 6, the present invention is except being suitable for following the former paper feeder of manuscript, also can be suitable at the paper feeder of manuscript that drive access of draft counter-rotating is not provided with curve, and the former paper feeder of manuscript has drive access 20, and this drive access 20 is from paper feed roller 7, upward the lateral bending song; Transfer roller 24,25, this transfer roller 24,25 is arranged at than paper feed roller 7 will lean on separate roller 8 one sides, can the draft that take off by pickup roller 6 be separated by the separate roller of (direction of arrow the figure) pushing paper feed roller 7 from the top side.In addition, the present invention also can be suitable for following paper feeder except being suitable for above-mentioned transfer roller 24,25 simultaneously as beyond the paper feeder of manuscript of blocking mechanism, and this paper feeder is not supplied with draft, and can be supplied with common paper as chopping machine.In addition, in the above-described embodiment, bear the transmission resistance by the dummy roll that is arranged on the 1st curve, prevent the variation of the thrust pressure of separate roller thus, and can alleviate the contact resistance of the 1st curve, but also can be by in the 1st drive access that extends along the tangential direction of bite, according to the essentially identical height of bite, the dummy roll that contacts with draft is set, bears the transmission resistance thus, prevent the variation of the thrust pressure of separate roller.
Have again, as shown in Figure 7, the 1st dummy roll 26 also can be provided with in the following manner, and this mode is: will lean on paper feed roller 7 one sides at the line S than paper feed roller 7 and the bite 32 of separate roller 8, contact with draft, in this occasion, identical equally with embodiment, because by the 1st dummy roll 26, bear with by transfer roller 24, the rightabout power of the press direction of 25 separate roller 8 (direction of arrow among the figure) change so can prevent the thrust pressure of separate roller 8, or separate roller 8 is left such situation with paper feed roller 7.
In addition, in the present embodiment, separation device has adopted rotatable separate roller, and still, even employing fixed separating pad as shown in Figure 8, also it doesn't matter.
Claims (9)
1. paper feeder, this paper feeder comprises:
Paper-feeding mechanism, this paper-feeding mechanism is supplied with the paper from the sheet feed stacker dispatch;
Separation device, this separation device this paper-feeding mechanism relatively constitute in the mode that can contact, separate and push, and between this separation device and above-mentioned paper-feeding mechanism, separate the paper from the sheet feed stacker dispatch;
Connecting gear, this connecting gear are arranged at than the more close above-mentioned separation device side of the bite of above-mentioned paper-feeding mechanism and above-mentioned separation device, and the paper that will be in by above-mentioned paper-feeding mechanism and separation device clamp position is sent to the downstream;
Drive access, this drive access are formed between above-mentioned bite and the above-mentioned connecting gear, and this drive access will lead to above-mentioned connecting gear from the paper that above-mentioned paper-feeding mechanism is supplied with; It is characterized in that,
Also comprise the idle running swivel, this idle running swivel is arranged in the above-mentioned drive access from the side-prominent mode of above-mentioned separation device, and the power of the paper that is subjected to transmitting by above-mentioned connecting gear direction that produce, that above-mentioned separation device separates from above-mentioned paper-feeding mechanism.
2. paper feeder according to claim 1, it is characterized in that above-mentioned paper-feeding mechanism is made of the paper feed roller more than 1 at least, above-mentioned idle running swivel is made of with above-mentioned connecting gear the dummy roll more than 1 at least and is made of the transfer roller more than 1 at least, according to from the basic center of the Width of above-mentioned paper feed roller along on the straight line of the direction of transfer of paper, each dummy roll and transfer roller of at least 1 are set respectively.
3. paper feeder according to claim 1, it is characterized in that above-mentioned paper-feeding mechanism is made of the paper feed roller more than 1 at least, above-mentioned idle running swivel is made of with above-mentioned connecting gear the dummy roll more than 1 at least and is made of the transfer roller more than 1 at least, the basic center of the Width of above-mentioned paper feed roller is made as the summit, on leg-of-mutton two limits of basic both ends bonded assembly, be provided with above-mentioned dummy roll with the paper width direction of this summit and above-mentioned transfer roller.
4. paper feeder, this paper feeder comprises:
Paper-feeding mechanism, this paper-feeding mechanism is supplied with the paper from the sheet feed stacker dispatch;
Separation device, this separation device this paper-feeding mechanism relatively constitute in the mode that can contact, separate and push, and between this separation device and above-mentioned paper-feeding mechanism, separate the paper from the sheet feed stacker dispatch;
Drive access, this drive access will be from the paper guiding downstream that above-mentioned paper-feeding mechanism is supplied with;
Connecting gear, this connecting gear is arranged on the above-mentioned drive access, and the paper of clamp position between above-mentioned paper-feeding mechanism and the above-mentioned separation device is sent to the downstream; It is characterized in that,
This drive access comprises the 1st drive access and 2nd drive access of relative above-mentioned the 1st drive access at above-mentioned separation device lateral bending song of the linearity of the paper guiding that will supply with from above-mentioned paper-feeding mechanism,
This connecting gear is arranged on above-mentioned the 2nd drive access,
Also comprise the idle running swivel, this idle running swivel is in the curve and the above-mentioned drive access between the bite between above-mentioned paper-feeding mechanism and above-mentioned separation device that move in above-mentioned the 2nd drive access from above-mentioned the 1st drive access, inboard by above-mentioned drive access is provided with to the outstanding mode in the inside of above-mentioned drive access, and this idle running swivel is contacting with the paper that transmits with above-mentioned connecting gear with the basic identical height of above-mentioned bite.
5. paper feeder according to claim 4 is characterized in that above-mentioned paper-feeding mechanism is made of paper feed roller; Above-mentioned idle running swivel contact paper, this paper transmits with above-mentioned connecting gear on the basic tangent line of the bite of above-mentioned paper feed roller and above-mentioned separation device.
6. paper feeder according to claim 4 is characterized in that, above-mentioned idle running swivel is arranged at above-mentioned curve.
7. paper feeder according to claim 4, it is characterized in that in above-mentioned the 2nd drive access, being provided with the 2nd curve, the 2nd curve transmit midway with paper at above-mentioned connecting gear lateral bending song, and being provided with the 2nd idle running swivel, the 2nd idle running swivel is outstanding in above-mentioned drive access from the 2nd curve inboard in the 2nd curve.
8. paper feeder according to claim 4, it is characterized in that above-mentioned paper-feeding mechanism is made of the paper feed roller more than 1 at least, above-mentioned idle running swivel is made of with above-mentioned connecting gear the dummy roll more than 1 at least and is made of the transfer roller more than 1 at least, according to from the basic center of the Width of above-mentioned paper feed roller along on the straight line of the direction of transfer of paper, each dummy roll and transfer roller of at least 1 are set respectively.
9. paper feeder according to claim 4, it is characterized in that above-mentioned paper-feeding mechanism is made of the paper feed roller more than 1 at least, above-mentioned idle running swivel is made of with above-mentioned connecting gear the dummy roll more than 1 at least and is made of the transfer roller more than 1 at least, the basic center of the Width of above-mentioned paper feed roller is made as the summit, on leg-of-mutton two limits of basic both ends bonded assembly, be provided with above-mentioned dummy roll with the paper width direction of this summit and above-mentioned transfer roller.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001274973A JP3619481B2 (en) | 2001-09-11 | 2001-09-11 | Paper feeder |
| JP274973/2001 | 2001-09-11 | ||
| JP274973/01 | 2001-09-11 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1406849A CN1406849A (en) | 2003-04-02 |
| CN100372750C true CN100372750C (en) | 2008-03-05 |
Family
ID=19099917
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021316279A Expired - Fee Related CN100372750C (en) | 2001-09-11 | 2002-09-11 | Paper feeder |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP3619481B2 (en) |
| CN (1) | CN100372750C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7020429B2 (en) | 2003-06-12 | 2006-03-28 | Nisca Corporation | Sheet supplying apparatus and image reading apparatus comprising the same |
| JP2011037632A (en) * | 2010-07-26 | 2011-02-24 | Nisca Corp | Sheet supply device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2504655Y2 (en) * | 1989-07-19 | 1996-07-10 | ニスカ株式会社 | Paper feeder |
| CN1141618A (en) * | 1994-03-03 | 1997-01-29 | Ace电研株式会社 | Device for separating and carrying sheets of paper |
| US5984298A (en) * | 1996-11-15 | 1999-11-16 | Mita Industrial Co., Ltd. | Sheet feeding apparatus with a driving device for a paper stopper |
| JP2001114431A (en) * | 1999-10-19 | 2001-04-24 | Murata Mach Ltd | Paper carrying device |
| JP2001233464A (en) * | 2000-02-24 | 2001-08-28 | Seiko Epson Corp | Sheet feeding device, recording device, and auxiliary roller |
-
2001
- 2001-09-11 JP JP2001274973A patent/JP3619481B2/en not_active Expired - Fee Related
-
2002
- 2002-09-11 CN CNB021316279A patent/CN100372750C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2504655Y2 (en) * | 1989-07-19 | 1996-07-10 | ニスカ株式会社 | Paper feeder |
| CN1141618A (en) * | 1994-03-03 | 1997-01-29 | Ace电研株式会社 | Device for separating and carrying sheets of paper |
| US5984298A (en) * | 1996-11-15 | 1999-11-16 | Mita Industrial Co., Ltd. | Sheet feeding apparatus with a driving device for a paper stopper |
| JP2001114431A (en) * | 1999-10-19 | 2001-04-24 | Murata Mach Ltd | Paper carrying device |
| JP2001233464A (en) * | 2000-02-24 | 2001-08-28 | Seiko Epson Corp | Sheet feeding device, recording device, and auxiliary roller |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1406849A (en) | 2003-04-02 |
| JP2003081474A (en) | 2003-03-19 |
| JP3619481B2 (en) | 2005-02-09 |
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| CF01 | Termination of patent right due to non-payment of annual fee |