CN1799971A - Sheet feeding device and image recording apparatus equipped with the sheet feeding device - Google Patents
Sheet feeding device and image recording apparatus equipped with the sheet feeding device Download PDFInfo
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- CN1799971A CN1799971A CN 200510136280 CN200510136280A CN1799971A CN 1799971 A CN1799971 A CN 1799971A CN 200510136280 CN200510136280 CN 200510136280 CN 200510136280 A CN200510136280 A CN 200510136280A CN 1799971 A CN1799971 A CN 1799971A
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Abstract
A sheet feeding device including: a sheet-feed roller(28) driven by a drive source(62); and a spur roller(30) which is opposed to a portion of the sheet-feed roller in an axial direction thereof and which is to be biased toward the sheet-feed roller, the spur roller and the sheet-feed roller cooperating with each other to feed a sheet while holding the sheet therebetween. In the sheet feeding device, the spur roller includes two spurs and an intermediate hub(34) disposed between the two spurs(33) for defining a distance therebetween and having an outside diameter smaller than that of each of the two spurs. Further, the sheet-feed roller includes: a large-diameter portion(32) opposed to the intermediate hub so as to be interposable between respective radially outer portions of the two spurs; and two small-diameter portions which are respectively located on axially opposite sides of the large-diameter portion so as to extend beyond respective outer axial end faces of the two spurs and each of which has an outside diameter smaller than that of the large-diameter portion.
Description
The present invention is based on Japanese patent application No.2004-376508 that is filed on December 27th, 2004 and the 2005-018127 that is filed on January 26th, 2005, its content is incorporated herein by reference.
Technical field
The present invention relates generally to a kind of paper-advance unit, and this device is by means of the intake roller that drives with rotating manner and be arranged to face the synergy paper feed of at least one outstanding roller of the peripheral surface of this intake roller.The invention still further relates to a kind of image recorder that this paper-advance unit is housed.
Background technology
In ink jet type image recorder, used the paper-advance unit that is used for paper feed usually such as chopping machine, facsimile apparatus etc.In paper-advance unit, require do not reduce be recorded in such as the situation of the lip-deep picture quality of paper of the feeding of wanting of recording medium under paper feed.For example, in U.S. Patent No. 5,961, a kind of structure that is used in the common paper-advance unit on the image recorder is disclosed among the 234A (corresponding to JP-A-10-167507).Concrete disclosedly be, in disclosed paper-advance unit, be provided with intake roller and a plurality of outstanding roller along the paper feed path that the feeding paper is passed through, these outstanding rollers axially are spaced from each other along intake roller, make them face the peripheral surface of this intake roller.More particularly, each in described a plurality of outstanding roller all have one outstanding.Giving prominence to of outstanding roller is relative with the circular groove that forms in intake roller respectively, makes these outstanding axially spaced apart mutually, and each outstanding radially outer toothed part then is inserted in the corresponding groove.In the paper-advance unit of this structure, feed paper when paper being remained between a plurality of outstanding rollers and the intake roller.
Summary of the invention
Yet run into difficulty during concerning between the two as the paper-advance unit of above-mentioned structure below optimizing: the paper that each outstanding roller and intake roller kept enters the side-play amount in the corresponding circular groove; With the paper feed power that depends on the paper side-play amount.This difficulty is an example in the problem that run into of existing paper-advance unit, and has also found a lot of other problems in existing paper-advance unit.Therefore, existing paper-advance unit has a lot of rooms for improvement on its practicality.Consider these situations, developed the present invention.Thereby, an object of the present invention is to provide and a kind ofly have the paper-advance unit of height practicality and a kind ofly make the improved image recorder of its practicality owing to this paper-advance unit has been installed.
Above-mentioned purpose of the present invention can realize according to an aspect of the present invention that this aspect provides a kind of paper-advance unit, and it comprises: by the intake roller of drive source driving; With outstanding roller, this outstanding roller is relative it is axial with the part of intake roller, and to this intake roller biasing, this outstanding roller and intake roller are cooperated when remaining on paper between them mutually, in order to paper feed.In this paper-advance unit, outstanding roller comprise two outstanding and be arranged on these two middle hubs between outstanding, that limit a spacing, this centre hub have less than two outstanding in each external diameter, and intake roller comprises: with the relative major diameter part of described middle hub, so that can place between two outstanding radially outers separately; With two small diameter portion, they are positioned at respectively on the axially relative both sides of major diameter part, so that extend beyond two outstanding outer axial end faces separately, each small diameter portion has the external diameter less than the major diameter part.
In the paper-advance unit of above-mentioned structure, outstanding roller is placed or transfer by relative bias force under prevention paper out-of-position resistance (being the elastic force of paper) effect.In this example, paper is offset or is bent to the curved configuration of protruding to outstanding roller between two outstanding radially outers (radially outermost end) of outstanding roller.That is, in the paper-advance unit of above-mentioned structure, the skew of optimization paper easily, thus on paper, produce suitable tension force (with respect to the out-of-position antagonistic force).Thereby paper-advance unit of the present invention can be with suitable centripetal force paper feed.
In first preferred form of paper-advance unit of the present invention, two minor diameter are divided into two circular groove parts, two corresponding outstanding can insertions wherein.
According to above-mentioned first preferred form of the present invention, when paper at it corresponding to partly locating to the intake roller skew as two circular grooves of the small diameter portion of intake roller or when bending to the curved configuration of protrusion, paper is offset or bends to the curved configuration of protruding to outstanding roller between two outstanding radially outers (radially outermost end) of outstanding roller.This layout has also promoted paper out-of-position optimization, has also produced suitable tension force on paper.Thereby, can be with suitable centripetal force paper feed.
In second preferred form of paper-advance unit of the present invention, the gap between each axial end of major diameter part and the axial inner ends face of corresponding two projections is smaller or equal to 1 millimeter.
According to above-mentioned second preferred form, may work as the paper that remains between intake roller and the outstanding roller when between them, being fed, reduce the side-play amount of paper between the axial surface of outstanding corresponding two outstanding radially outers of roller and intake roller major diameter part.
Above-mentioned second preferred form be arranged such that major diameter partly have axially record along it, be not more than 2 millimeters width dimensions, can improve paper feed power when by two outstanding and large-diameter portion is divided the side-play amount of the paper that keeps optimizing.
In the 3rd preferred form of paper-advance unit of the present invention, corresponding two outstanding radially outermost end and corresponding two small diameter portion disengage.
According to the 3rd above-mentioned preferred form, no matter give prominence between roller and the intake roller whether paper is arranged, the radially outermost end of outstanding corresponding two projections of roller all disengages with intake roller.Thereby, even each give prominence to its radially outermost end all have point and protrude, these protrusion also there is no fear of being worn, and have caused improving the durability of giving prominence to.
Above-mentioned the 3rd preferred form can embody with following dual mode: in first kind of mode, when paper was not between intake roller and outstanding roller, the peripheral surface of major diameter part contacted with the peripheral surface of middle hub; In the second way, two minor diameter are divided into two circular grooves, corresponding two outstanding can insertion groove in, and intake roller comprises two circumferential parts, two circular groove partial sum major diameters parts just are arranged between this circumferential portion divides.And, in the second way, outstanding roller comprises two side hubs, and two outstanding and middle hubs are located between this side hub, and when paper was not between intake roller and outstanding roller, the peripheral surface of corresponding two circumferential parts contacted with the peripheral surface of corresponding two side hubs.
According to above-mentioned dual mode, outstanding roller is by means of major diameter part or two circumferentially part placements of intake roller, thereby reduced when paper does not remain between intake roller and the outstanding roller, each the outstanding radially outer that records from the peripheral surface of major diameter part inserts the amount of corresponding small diameter portion.That is, can reduce each outstanding radially outer and overlapping lap of major diameter part.Thereby, may reduce the resistance of outstanding roller with respect to the power of placing outstanding roller, promptly when entering between intake roller and the outstanding roller, moves the front end of paper the outstanding needed power of roller.As a result, realized having the paper-advance unit of paper feed precision preferably.In this connection, when being installed on the image recorder according to any paper-advance unit in the dual mode, prevented from during feeding, to increase resistance, thereby avoided on the image of being printed on the recording surface of paper, being formed with some additional wire (being called striped) owing to the variation on the line feed line-spacing causes to paper.Thereby avoided reduction picture quality effectively.
In the relatively large situation of lap between intake roller and outstanding radially outer (band toothed portion), contact with outstanding inner radial, influenced the smooth rotation of giving prominence to towards intake roller and the front end that protrudes the paper of roller feeding.In this example, paper can easily not enter intake roller and outstanding between, cause the risk that paper blocks to occur.Above-mentioned two modes can easily solve this shortcoming.
Above-mentioned purpose of the present invention can realize according to a further aspect in the invention that this aspect provides a kind of image recorder, comprising: the ink jet type image recording unit that is used for document image on the paper of want feeding; And paper-advance unit, it is according to any one preferred form structure of an above-mentioned aspect and it, and when the paper feed direction at feed paper place was seen, this paper-advance unit was set at the downstream of described image recording unit, is used for along the paper feed direction paper feed.
The image recorder that this paper-advance unit is housed is enjoyed the above-mentioned advantage that paper-advance unit has.When on paper the record such as photograph image have the image of high dot density the time, this image recorder has superiority especially.In this case and since be attached on the paper, be used to write down this ink with image of high dot density, thereby paper may become wet, and (that is, to the out-of-position low resistance) infringement causes reducing paper feed power may to be subjected to low elasticity.The reducing of paper feed power may undesirably cause each schedule time paper feed quantity not sufficient, and therefore causes and striped occurs.Yet the reducing of paper feed power of the paper that feeding intake roller and outstanding roller kept can not appear being used in image recorder of the present invention, and guarantees can avoid occurring striped thus along paper feed direction paper feed reliably.
Image recorder of the present invention can use the above-mentioned various forms relevant with paper-advance unit.For example, image recorder adopts when preventing to protrude the worn-down form, can prevent that formation may be protruded the impression that cause by outstanding wearing and tearing on the recording surface of paper, and avoid owing to the ink that is attached on the wearing and tearing protrusion causes picture quality to reduce to the recording surface transfer of paper again.
Description of drawings
Considering in conjunction with the accompanying drawings when of the present invention,, can understand above-mentioned and other purpose, feature, advantage and the technology and the meaning of industry aspect of the present invention better by reading the following detailed description of the preferred embodiment of the present invention, in the accompanying drawings:
Fig. 1 is the transparent view that shows the ink jet type image recorder that the feed arrangement that is suitable for the principle of the invention is housed;
Fig. 2 is the lateral plan with section form displayed map 1 apparatus shown;
Fig. 3 is the planar view that equipment shown in Figure 1 takes off image read-out;
Fig. 4 is along the resulting section drawing of line 4-4 among Fig. 3;
Fig. 5 is the transparent view that equipment shown in Figure 1 takes off carriage;
Fig. 6 is according to the exit roller of first embodiment of the invention and the decomposition elevation of outstanding roller with the section form local repressentation;
Fig. 7 is the lateral plan of outstanding roller;
Fig. 8 is the view that the state when paper P is maintained between exit roller and the outstanding roller is described;
Fig. 9 is the table that shows experimental result data;
Figure 10 is the chart that shows observed data, wherein, abscissa is represented antagonistic force, and ordinate is represented side-play amount, with the clearance C between adjacent two each outstanding axial inner ends faces of the width dimensions W of the annular protruding portion of exit roller and each axial end of this annular protruding portion and outstanding roller as parameter;
Figure 11 is the chart that shows observed data, and wherein, abscissa is represented width dimensions W, and ordinate is represented antagonistic force, with spacing C as parameter;
Figure 12 is the chart that shows observed data, and wherein, abscissa is represented spacing C, and ordinate is represented antagonistic force, with width dimensions W as parameter;
Figure 13 is with the decomposition elevation of section form local repressentation according to the outstanding roller of the exit roller and second embodiment;
Figure 14 is with the decomposition elevation of section form local repressentation according to the outstanding roller of exit roller and the 3rd embodiment;
Figure 15 is with the decomposition elevation of section form local repressentation according to the outstanding roller of exit roller and the 4th embodiment;
Figure 16 A is the front elevation that shows according to the outstanding roller of fifth embodiment of the invention;
Figure 16 B is the front elevation that shows according to the outstanding roller of sixth embodiment of the invention; With
Figure 17 is the decomposition elevation with the section form part corresponding to Fig. 6, and this view has shown according to the exit roller of the 7th embodiment and outstanding roller.
The specific embodiment
With reference to accompanying drawing, set forth the ink jet type image recorder that the feed arrangement that is suitable for the principle of the invention is housed.
Fig. 1 and 2 display image recording unit 1 is the form of multi-function device (MFD), and this image recorder 1 has printing function, copy function, scan function and facsimile function.As depicted in figs. 1 and 2, image recorder 1 has the housing 2 as equipment 1 main body.This housing 2 is made by the synthetic resin material of injection moulding.
On the top of housing 2, be provided with image read-out 12, this device 12 is finished the copy function and the facsimile function of equipment 1.This image read-out 12 is arranged to and can pivots up and down by the end of a hinge means (not shown) around housing 2.Former (original copy) masking material 13 of overlay image recording unit 12 upper surfaces is sentenced pivotable mode in its back-end by the rear end that hinge 12a is connected image recorder 12, makes that this former masking material 13 can pivot up and down around hinge 12a.
And, being provided with operator's control panel 14 on the top of housing 2, it is positioned at the front side of image read-out 12 and has various control buttons and key, LCDs etc.Be provided with glass board 16 on the upper surface of image read-out 12, when original copy masking material 13 was upwards opened, original copy or manuscript were placed on this glass board 16.Below glass board 16, be provided with the image-scanning device (CIS: contact-type image sensor) that is used to read the original copy epigraph, so that can reciprocally move along the axis of guide 44, extend (being main scanning direction, Y direction just shown in Figure 1) along direction perpendicular to Fig. 2 place paper plane.
In unshowned ink storing part, store four print cartridges that mutually different four kinds of colors are housed, i.e. black (Bk), cyan (C), carmetta (M) and yellow (Y).These print cartridges by separately flexible ink supply pipe and be connected usually on the record shower nozzle of recording section (image recording unit).
As illustrated in fig. 1 and 2, the bottom of housing 2 or bottom are provided with sheet feed cassette 3, and it can insert by the open front 2a that is positioned at housing 2 front sides (promptly in left side shown in Figure 2).Sheet feed cassette 3 be positioned to receive with one folded cut out good, such as the paper of the paper P form supply of selected sizes such as A4 size, letter size, legal documents size or postcard size, make the Width of every sanction paper P well be parallel to its two parallel short sides, these two parallel short sides (are auxiliary scanning direction along the paper feed direction perpendicular to the paper feed place, the direction that is marked with arrow X among X-direction or Fig. 1 and 2) direction is (promptly along extending perpendicular to Fig. 2 place paper plane direction, main scanning direction, perhaps Y direction).Paper feed direction Fig. 1,3 and Fig. 5 in mark with arrow " A ".
At the open front 2a place (promptly on shown in Figure 2 right side) of one of opposite end of sheet feed cassette 3, be provided with and tilt to divide a cardboard 8 away from housing 2.And as shown in Figure 4, the roller hold-down arm 6a of paper feed is supported by housing 2 at its near-end (upper end), makes this roller hold-down arm 6a to pivot up and down.Free end (lower end) at roller hold-down arm 6a is located, and it carries paper feed roller 6b, is passed on this paper feed roller 6b by the gear drive that is arranged on the roller hold-down arm 6a from the rotational motion of drive source (not shown).The paper feed roller 6b and the branch cardboard 8 that tilts are cooperated mutually, in the pile from be contained in sheet feed cassette 3 uppermost paper P is branched away, and with this paper P that tells to recording section 7 feedings that are positioned at sheet feed cassette 3 tops, through comprising the paper supply path 9 of basic U-shaped upset path part.This paper supply path 9 is provided by the space that forms between the first paper supply path limit parts 60 of the radially outer of the U-shaped in paper supply path 9 upset path part and the second paper supply path limit parts 52 in the inner radial of the U-shaped upset path in paper supply path 9 part.Each paper P is arranged to by 9 feedings of paper supply path, makes paper P align along its line of centers perpendicular to the Width of paper feed direction A with paper supply path 9 along the line of centers of its Width.
Shown in Fig. 2-5, recording section 7 is supported by the main frame 21 of case structure, and described main frame 21 comprises pair of sidewalls 21a, 21a, and is set between first guide member 22 and second guide member 23, and each guide member is the form with extending-board.First and second guide members 22,23 are supported by side plate 21a, extend (main scanning direction) along Y direction.The carriage 5 that carries the ink mist recording shower nozzle 4 of recording section 7 is installed in and is positioned at along first guide member 22 in paper feed direction A downstream and is positioned on second guide member 23 in carriage 5 downstreams, so that these two guide members, 22,23 phase bridge joints make carriage 5 slidably to move on guide member 22,23.Thereby carriage 5 can reciprocally move along Y direction.
For the upper surface of movable support bracket 5, the second guide members 23 reciprocally is provided with timing belt 24, it extends along main scanning direction (Y direction).And the drive motor bracket (not shown) can be operated and make carriage 5 by timing belt 24 crank motions, and this drive motor is fixed on the lower surface of second guide member 23.
As shown in Figure 3, cylinder 26 has flat pattern, and it is fixed on first framework 21 between first and second guide members 22,23.This cylinder 26 extends along Y direction, so that below the entrained record shower nozzle 4 of carriage 5.
Shown in Figure 4 and 5, at upstream side, be provided with driven roller 50 and nip rolls 51a-51d, as the alignment roller that is used for paper P is fed into the below of record shower nozzle 4 along the being seen cylinder 26 of paper feed direction A, this nip rolls is set at the below of driven roller 50, towards driven roller 50.Downstream along the being seen cylinder 26 of paper feed direction A is provided with exit roller 28, and as intake roller, it is driven in order to feeding and has passed through the paper P of recording section 7 to paper delivery part 10 along paper feed direction A; With a plurality of outstanding rollers 30 (being six outstanding rollers in the present embodiment), they are set at the top of exit roller 28, towards exit roller 28, and will be to exit roller 28 biasings.Paper-advance unit according to the present invention by exit roller 28, outstanding roller 30, the motor 62 of dividing a word with a hyphen at the end of a line etc. that is used to drive exit roller 28 constitutes.
The paper P that recording section 7 has carried out recording operation is discharged to paper delivery part 10, and the surface that paper P write down faces up.Paper delivery part 10 is positioned at sheet feed cassette 3 tops, and the paper delivery part opening 10a that communicates with paper delivery part 10 opens in the front side of housing 2, so that the same with the open front 2a of housing 2.And dividing plate (lower cover member) 29 is made by synthetic resin, and integrally formed with housing 2, it is set as the front end that extends to housing 2 from the lower surface of second guide member 23, wherein paper delivery opening 10a opens, so that on paper delivery part 10, cover paper delivery part 10, and as shown in Figure 2.
Then, will elaborate by the cooperative action of exit roller 28 and outstanding roller 30 according to first embodiment be used for the paper that paper P remains between them is kept structure.
As illustrated in Figures 5 and 6, exit roller 28 has cylindrical shape, and it has diameter D1, and extends along the direction (Width of Y direction or paper P) perpendicular to paper feed direction A.Exit roller 28 is supported on two relative axial end by each side plate 21a of main frame 21, and drives in rotating mode by transmitting the propulsive effort that comes from the motor 62 of dividing a word with a hyphen at the end of a line.Describe in more detail with reference to Fig. 5, exit roller 28 is supported on two relative axial end of this exit roller 28 by each side plate 21a by being fixed on bearing 66 on the respective side panels 21 in rotating mode.And, be used for being fixed on an axle head of exit roller 28 from the gear that the motor 62 of dividing a word with a hyphen at the end of a line is delivered to exit roller 28 with propulsive effort.One of side plate 21 and and the corresponding bearing 66 of an axle head of above-mentioned exit roller 28 in one be sandwiched in this gear and be installed between the set collar 64 on the exit roller 28, make the Width location of exit roller 28 thus along paper P.Exit roller 28 is made of metal, and has been subjected to being used to increase the processing of friction force on cylinderical surface, for example, coats the ceramic particle layer on cylinderical surface, perhaps sticks the thin resin film with high friction coefficient on this surface, such as rubber.Exit roller 28 comprises several to circular groove part 31 and some annular projection parts 32, and each annular projection part 32 is placed between a pair of circular groove part 31.This several to circular groove part 31 along the Width of the paper P preset distance that is spaced from each other, and the every pair of circular groove part 31 has diameter D2 less than exit roller 27 diameter D1 (D2＜D1).As the large-diameter portion timesharing, each circular groove part 31 is as small diameter portion in each annular projection part 32.
As shown in Figure 6, each outstanding roller 30 is configured to along it axially relative with a part of intake roller 28, with every pair of circular groove part 31 with to be placed on every pair of annular projection part 32 between the circular groove part 31 corresponding.Described outstanding roller 30 comprise two outstanding, each is outstanding to have diameter D3; Be connected two hub portions 42 outstanding and that make by synthetic resin.This hub portion 42 comprises: hub 34 in the middle of the cylindrical shape, and it has diameter D4, and is connected at this inner radial place of outstanding 33 with corresponding two outstanding 33 axial inner ends face; With two cylindrical shape side hubs 35, it has diameter D5, and each side hub is connected in two outstanding 33 on corresponding one the inner radial of outer axial end face.In this first embodiment, the diameter D4 of middle hub 34 is greater than the diameter D5 of side hub 35.In the present invention, the D3 of diameter separately, D4, the D5 of outstanding 33, middle hub 34 and side hub 36 are configured to D3＞D4 〉=D5.
As shown in Figure 7, each outstanding 33 be similar disk shaped part, be made of metal, its have its radially outermost end along the circumferential a plurality of protruding 33b of formation continuously.Each protruding 33b has triangular shaped substantially on lateral plan, has tip or acute ends.Through hole 36 forms by two outstanding 33 core separately of middle hub 34, side hub 35 and each outstanding roller 30, so that extending axially along outstanding roller 30.Elasticity axostylus axostyle 37 (as elastomeric element) is made of wind spring, and it is inserted into by through hole 36.According to this layout, each outstanding roller 30 is all done to such an extent that can rotate around corresponding elasticity axostylus axostyle 37, and can move along the direction that intersects with its rotating shaft by means of the skew of elasticity axostylus axostyle 37.
Stay bearing plate 38 is formed from a resin, and opposite end is fixed on each side plate 21a of main frame 21, and it is set at the top of exit roller 28, so that parallel with exit roller 28, as illustrated in Figures 5 and 6.Stay bearing plate 38 is formed with some mounting holes 39, and described a plurality of outstanding rollers 30 are received in respectively in these mounting holes 39., move up along being provided with the support section 40 of support elastic axostylus axostyle 37 opposite ends respectively on the axial seen opposite end of outstanding roller 30 at each mounting hole 39 so that prevent elasticity axostylus axostyle 37.In addition, in respective side hub 35 bottoms, support section 40 extends near this side hub 35, elasticity axostylus axostyle 37 be supported on by means of this bottom support section 40 below, prevented simultaneously outstanding roller 30 vertically (promptly along paper P Width) move.
In paper P is not maintained at or is clipped in situation between exit roller 28 and the outstanding roller 30, for the supported part 40 of each its opposite end in the elasticity axostylus axostyle 37 that each outstanding roller provided supports, make corresponding outstanding roller under the effect of elasticity axostylus axostyle 37, setover, as shown in Figure 6 to exit roller 28.In this example, the outstanding of each outstanding roller 30 is inserted into or is received in the exit roller 28 corresponding a pair of circular groove parts 31 33, the middle hub 34 of outstanding roller 30 then at the respective annular jut 32 of its peripheral surface place and exit roller 28 against contacting.Thereby exit roller 28 is highlighted roller 30 biasings.In other words, annular projection part 32 is inserted between two outstanding 33, makes towards middle hub 34.Yet, in this layout, each outstanding 33 be formed at its radially outermost end (projection 33) do not abut against on the inside face of respective annular part 31.For this reason, in the present embodiment, annular projection part 32 between this is to outstanding 33 has the width dimensions W that axially records along it, its less than middle hub 34 along its width dimensions W1 that axially records, each circular groove part 31 then has width dimensions W2, it is approximately ten times of each outstanding 33 thickness t 1, thereby forms a spacing C (Fig. 6) between each axial end of annular projection part 32 and each corresponding two the outstanding 33 axial inner ends face in the face of the corresponding axial end of annular projection part 32.In the present embodiment, each outstanding 33 diameter D3 and thickness t 1 are respectively about 6 millimeters and about 0.1 millimeter.The diameter D4 of middle hub 34 is approximately 4 millimeters, and the diameter D1 of exit roller 28 approximately is 8.1 millimeters, and the diameter D2 of circular groove part 31 is about 5.5 millimeters.The width dimensions W2 of circular groove part 31 is about 1.2 millimeters, and the width dimensions W (W=W1-2C) of annular projection part 32 is smaller or equal to 2 millimeters, and spacing C is smaller or equal to 1 millimeter.As mentioned above, each diameter D3, D4, the D5 of outstanding 33, the middle hub 34 of each outstanding roller 30 and side hub 35 are configured to D3＞D4 〉=D5.The diameter D4 of middle hub 34 equals the diameter D5 of side hub 35, and side hub 35 abuts against on the exit roller 28, and middle hub 34 too.
In above-mentioned layout, when paper P does not remain on exit roller 28 and between the outstanding roller 30 of exit roller 28 biasing the time, each outstanding roller 30 outstanding 33 its disengaging of outermost end place and exit roller 28 radially with rotary way driving and the arbitrary portion relative with outstanding roller 30.Thereby the sharp projection 33b of outstanding 33 radially outermost seldom may wear and tear.More specifically describe, prevented sharp projection 33b owing to contact the wearing and tearing that cause with circular groove part 31 bottoms of exit roller 28 and cause to be deformed into and a kind ofly trend towards making the structure on the recording surface that the ink that sticks thereon transfers to paper P again and be deformed into the structure that a kind of width that has reduced sharp projection 33b owing to the contacts side surfaces result with circular groove part 31 trends towards formation impression on the recording surface of paper P.And the peripheral surface of the middle hub 34 of each outstanding roller 30 abuts against on the peripheral surface of respective annular jut 32 of exit roller 28, the outstanding roller 30 of raising thus or raise.Therefore, when paper P does not remain between exit roller 28 and the outstanding roller 30, can reduce each outstanding 33 amount of inserting in respective annular slot parts 31, that is, and each outstanding 33 overlapping lap of outermost end and annular projection part 32 radially.Since reduced lap, thereby can reduce when the front end that makes paper P enters between exit roller 28 and the outstanding roller 30, to be used to raise to give prominence to the power of roller 30, the outstanding roller 30 needed power that promptly raise, thus guaranteed steady feed paper P.Therefore, the line feed line-spacing can not change, and makes and can avoid striped occurring on the front end of paper P.Because the respective annular jut 32 of the maintenances of middle the hub 34 of each outstanding roller 30 and exit roller 28 is near contacting, thereby outstanding roller 30 rotates by means of the rotation of exit roller 28.Therefore,, also can reduce paper P is entered resistance between exit roller 28 and the outstanding roller 30, thus feed paper P reposefully even when the front end of paper P is run into outstanding roller 30.
As the image recorder 1 of above-mentioned structure in, instruct according to image recording, the uppermost paper P that is contained in the pile in the sheet feed cassette 3 advances by means of the rotation of paper feed roller 6b, so that dividing cardboard 8 to enter at its front end place with inclination contacts, make paper P and described pile separate, and followed to 9 feedings of paper supply path.Paper P upwards forms the U-shaped upset along paper supply path 9, and is fed on the cylinder 26 of image recording section 7, and its front end is maintained between driven roller 50 and the nip rolls 51.
On feeding (discharge), write down image, result paper P by image recording section 7, it is in the situation that is maintained at simultaneously between exit roller 28 and a plurality of outstanding roller 30 between them, the bias force of each outstanding roller 30 (promptly under the elastic force of paper P) relative resilient axostylus axostyle 37 under the resistance of paper P skew or bending is raised, as shown in Figure 8.In this case, paper P is by 32 skews of annular projection part or bend to curved configuration protruding upward between two of each outstanding roller 30 outstanding radially outermost end (protruding 33b), and paper P is offset or bends to the curved configuration of downward protrusion by corresponding two the outstanding 33 radially outermost end (protruding 33b) of each outstanding roller 30 on the part of its correspondence and circular groove part 31.Thereby, in paper P, produced tension force (with respect to the out-of-position antagonistic force), make it possible to suitable centripetal force along the paper feed direction paper feed.
The side-play amount T of paper P (millimeter) (as shown in Figure 8) just is offset the amount that enters each circular groove part 31 by means of the measured paper P of clearance C between each axial end of the width dimensions W that changes annular projection part 32 and this annular projection 32 and corresponding two outstanding 33 each axial inner ends face under the effect of the bias force of elasticity axostylus axostyle 37.It is following distance between the two that the side-play amount T of above-mentioned paper P can be considered as: paper P and each outstanding 33 be the contact point of outermost end (protruding 33b) radially; Contact point with the peripheral surface of paper P and annular projection part 32.In measurement, the paper P of institute's feeding (discharge) has the same mutually papery, and image is recorded on the paper P with identical recording density.The result who measures is presented in the table shown in Figure 9.On the side-play amount T that records (millimeter) basis, calculate the antagonistic force that acts on one outstanding 33 (gf: gram force) (relation between the reacting force of supporting when promptly the skew of the beam that is simply supported and concentrated load act on 2 of beam centre between this beam opposite end) on opposite end according to suitable formula.Figure 10 is a chart, and wherein row has the data that record, and abscissa is represented antagonistic force, and ordinate is then represented side-play amount, with width dimensions W and spacing C as parameter.
Figure 11 is a chart, and wherein row has the data that record, abscissa to represent the width dimensions W of annular projection part 32, and ordinate is represented antagonistic force, with spacing C as parameter.Figure 12 is a chart, wherein row the data that record are arranged, abscissa is represented spacing C, ordinate is then represented antagonistic force, with width dimensions W as parameter.
Can find out significantly that from observed data when spacing C was big, antagonistic force is not big to be changed, and no matter how the width dimensions W of annular projection part 32 changes, all less.On the other hand, spacing C is (promptly smaller or equal to about 1 millimeter time) hour, and antagonistic force increases along with reducing of width dimensions W.In other words, by reducing the width dimensions W of annular projection part 32, can be at spacing C than hour relatively large antagonistic force of acquisition, promptly relatively large centripetal force.And when the width dimensions W of annular projection part 21 surpassed 2.5 millimeters, antagonistic force was less and remain on the less level.
From above-mentioned experimental result, recognize: in above-mentioned layout, diameter is placed on giving prominence between 33 of each outstanding roller 30 less than outstanding middle hub 34 to 33 diameter, exit roller 28 then has the annular projection part 32 that forms between circular groove part 31, corresponding outstanding 33 the radially outer of each outstanding roller 30 can insert in the described circular groove part 31.In this layout, by above-mentioned spacing C being set smaller or equal to 1 millimeter, the width dimensions W that annular projection part 32 perhaps is set is smaller or equal to 2 millimeters, guaranteed following advantage: if used paper P is a plain pape, then paper P may owing to record such as photograph image have the image of high density point the time the ink that is attached on the paper become wet, paper P may stand low elasticity thus, promptly to the out-of-position low resistance.Yet in layout of the present invention, even paper P has stood this low elasticity, the centripetal force that is used for feed paper P when paper P being remained between exit roller 28 and each the outstanding roller 30 can not reduce yet, and makes it possible to the reliability feed paper P with height.Thereby, can avoid occurring striped.
Then, the paper of describing according to second embodiment of the invention is kept structure with reference to Figure 13.With the same in first embodiment, when paper P was not maintained between exit roller 28 and the outstanding roller 30, each radially outermost end and exit roller 28 of outstanding 33 disengaged.In this second embodiment, be separately positioned on two of each outstanding roller 30 outstanding 33 axially the diameter D5 of each outer side hub 35 done greater than the diameter D4 of middle hub 34.Thereby, deposit at this cloth, when paper P is not maintained between exit roller 28 and the outstanding roller 30, side hub 35 peripheral surface of each outstanding roller 30 abut against respectively on two circumferential peripheral surface partly of exit roller 28, these two circumferentially part lay respectively at exit roller 28 corresponding two circular groove parts 31 axially outside, and has a diameter D1, and the peripheral surface of hub 34 disengages with the peripheral surface of annular projection part 32 simultaneously, promptly centre hub 34 by radially with the suitable spacing of annular projection part 32 spaced apart.First embodiment that this second embodiment just was different from the structure of side hub 35, and use with first embodiment in used identical Reference numeral represent to have omitted elaborating under the situation of corresponding parts to second embodiment.The same with in first embodiment, each radially outermost end of outstanding 33 does not contact the inside face of respective annular slot part 31, thus each outstanding 33 radially the sharp protruding 33b at outermost end place can not be worn.Therefore, can prevent from the recording surface of paper P, to form impression owing to worn-down projection 33b, and avoided reducing picture quality owing to being attached on shifting to the recording surface of paper P again of ink on the worn-down projection 33b, as above-mentioned about first embodiment.And, can reduce the amount (being lap) that each radially outer of outstanding 33 inserts respective annular slot part 31, as among first embodiment.Owing to reduced lap, thereby can reduce to be used for the power of outstanding roller 30 that when the front end that makes paper P enters between exit roller 28 and the outstanding roller 30, raises, thereby guaranteed the steady feeding of paper P.Thereby the variation of the line-spacing of can avoiding entering a new line makes it possible to prevent from striped to occur on the front end of paper P.Since two side hubs 35 on each outstanding roller 30 keep respectively with the corresponding circumferential part of above-mentioned exit roller 28 near contacting, thereby outstanding roller 30 rotates by means of the rotation of exit roller 28.Therefore,, also can reduce paper P and enter resistance between exit roller 28 and the outstanding roller 30, thus feed paper P reposefully even when the front end of paper P is run into outstanding roller 30.
As shown in Figure 6, annular projection part 32 has the corner part of rounding, and each axial end of annular projection part 32 is connected in each corner part office with peripheral surface.The peripheral surface of annular projection part 32 can form the curved surface 41 (can be described as " crown ") of axial protrusion, and its diameter is greater than the diameter of axial end, and two long and short dash lines as shown in Figure 6 are indicated.When the peripheral surface of annular projection part 32 forms as is above-mentioned, when paper P was maintained between the peripheral surface of two of each outstanding roller 30 outstanding 33 and annular projection part 32, paper P did not have and is subjected to folding at the corner part of annular projection part 32 and the risk folding line that causes.Thereby can not reduce picture quality.
Although in graphic first and second embodiment, the peripheral surface of the middle hub 34 on each outstanding roller 30 has provided straight cylinder shape surface, but peripheral surface can be configured to have the pair of angled part, describe about the 3rd to the 6th embodiment (Figure 14-16) as following, in these embodiments, with representing corresponding parts, and, omitted detailed description for succinct purpose with identical Reference numeral used in first embodiment that illustrates.
In the 3rd embodiment shown in Figure 14, the peripheral surface that is arranged on the middle hub 34 between two outstanding 33 on each outstanding roller 30 forms to such an extent that have a kind of like this shape, and the diameter of peripheral surface diminishes towards its axial middle circle tubular part gradually from the axial opposite end of middle hub 34.Thereby middle hub 34 has sloping portion to 34a.In the 4th embodiment shown in Figure 15, middle hub 34 has a kind of structure, and wherein two frustum of a cones interconnect.Therefore, the peripheral surface of middle hub 34 has provided the combination of the peripheral surface of corresponding two frustum of a cones, and has the diameter that reduces to its axial centre portion linearity from its axial opposite end.Thereby middle hub 34 has sloping portion to 34a.In the 5th embodiment shown in Figure 16 A, middle hub 34 has a kind of structure, and wherein four frustum of a cones interconnect.Therefore, middle hub 34 have be positioned at its axial centre portion sloping portion to 34a.In the 6th embodiment shown in Figure 16 B, the peripheral surface of middle hub 34 forms to such an extent that have a recessed spherical shape, wherein the diameter of peripheral surface from the axial opposite end of middle hub 34 to its axial centre portion little by little and song reduce linearly.It is to be noted that this can be provided by corresponding plane surface or curved surfaces sloping portion.In the 4th to the 6th embodiment, the annular projection part 32 of exit roller 28 has the corner part 32a of chamfering, they form by corner chamfering about 45 is spent, and the peripheral surface of annular projection part 32 is connected at corner part 32a place with each axial end.As top about first and second embodiment described, annular projection part 32 can have the corner part of rounding, perhaps its peripheral surface can form the curved surface of axial protrusion, as shown in Figure 6.Be similar to the corner part and the curved surface with axial protrusion of rounding, the corner part of chamfering has prevented the folding line of paper P in this corner part office effectively, as mentioned above.
According to shown the 3rd to the 6th embodiment, when two outstanding 33 of each the outstanding roller 30 that comes out from exit roller 28 and outstanding roller 30, then raise by paper P when the tail end of paper P entered corresponding annular slot part 31, the corner part of annular projection part 32 contacted with the corresponding sloping portion 34a of middle hub 34.Thereby above-mentioned spacing C with suitable dimension can keep height reliability, thereby prevents that each outstanding 33 radially outermost end projection 33b is cracked owing to colliding with the peripheral surface of annular projection part 32.In addition, because the size of spacing C can be done equally on the axial opposite end of annular projection part 32, the axial end and corresponding two outstanding 33 two the spacing Cs of respective shaft between inner end surface that are annular projection part 32 can do mutually the samely, thereby can stablize along the centripetal force that is used for feed paper P of the Width of paper P, prevented that paper P quilt is with respect to paper feed direction feeding obliquely.And any other device even without being provided for limiting exit roller 28 and each outstanding roller 30 relative position in the axial direction by means of sloping portion 34a is contacted with annular projection part 32, has also limited this relative position.
Then, the paper of setting forth according to seventh embodiment of the invention is kept structure with reference to Figure 17.In first to the 6th above-mentioned embodiment, the bias force of the elasticity axostylus axostyle 37 that provides for each outstanding roller 30 acts on the exit roller 28, promptly under the effect of elasticity axostylus axostyle 37, any time, no matter paper P exists or is not present between outstanding roller 30 and the exit roller 28, and outstanding roller 30 is all setovered towards exit roller 28.As described below, when paper P was not between outstanding roller 30 and exit roller 28, under the effect of elasticity axostylus axostyle 37, each outstanding roller 30 can be to exit roller 28 biasings.In the 7th embodiment, use and represent corresponding component, and saved detailed description the 7th embodiment with identical Reference numeral used in illustrative first embodiment as shown in Figure 6.
In the 7th embodiment, when paper P is not between exit roller 28 and outstanding roller 30, the elasticity axostylus axostyle 37 that provides for each outstanding roller 30 is supported by corresponding support section 40, so that extend with the parallel axes ground of exit roller 28, as shown in figure 17, although and elasticity axostylus axostyle 37 has been accepted the weight of outstanding roller 30, elasticity axostylus axostyle 37 does not make outstanding roller 30 to exit roller 28 biasings.In addition, the middle hub 34 and the annular projection part 32 of each outstanding roller 30 disengage mutually, and a small spacing is arranged between them, and exit roller 28 then is not highlighted roller 30 biasings.In this example, corresponding two outstanding 33 radially outer of each outstanding roller 30 is inserted in the corresponding annular slot part 31, and two outstanding 33 radially outermost end then disengages with the inside face of circular groove part 31.In other words, annular projection part 32 is inserted into two and gives prominence between 33, makes relative with middle hub 34.Yet in this layout, each outstanding 33 is formed at its axial outermost end (protruding 33) and does not abut against on the inside face of respective annular slot part 31.For this reason, annular projection part 32 between two outstanding 33 has along its axial measured width dimensions W, its less than middle hub 34 along its axial measured width dimensions W1, each circular groove part 31 then has width dimensions W2, it is about each thickness t 1 of outstanding 33 of ten times, face formation spacing C (Figure 17) between the axial inner ends face of annular projection part 32 corresponding axial ends in each axial end and corresponding two projections 33 of annular projection part 32 thus, as among illustrative shown in Figure 6 first embodiment.Unlike first embodiment that illustrates, the diameter D4 of middle hub 34 is about 3 millimeters.Respective width size W1, the W2 of respective diameters D1, D2, annular projection part 32 and the circular groove part 31 of each diameter D3 of outstanding 33 and thickness t 1, exit roller 28 and circular groove part 31 and spacing C are the same with those sizes in first embodiment that illustrates.
By above-mentioned spacing C is arranged to smaller or equal to 1 millimeter, perhaps the width dimensions W with annular projection part 32 is arranged to smaller or equal to 2 millimeters, guaranteed following advantage: if used paper P is a plain pape, then paper P may owing to record such as photograph image have the image of high density point the time the ink that is attached on the paper become wet, paper P may stand low elasticity thus, promptly to the out-of-position low resistance.Yet in layout of the present invention, even paper P has stood this low elasticity, the centripetal force that is used for feed paper P when paper P being remained between exit roller 28 and each the outstanding roller 30 can not reduce yet, and makes it possible to the reliability feed paper P with height.Thereby, can avoid occurring striped.It is to be noted, in the 7th embodiment, obtained the similar experimental result of first embodiment about illustrating with above-mentioned those (Fig. 9).That is the content shown in the corresponding chart in Figure 10-12 and also be applicable to the 7th embodiment, about the relation between the described content of first embodiment that illustrates.
In the 7th above-mentioned embodiment, when paper P is not between exit roller 28 and outstanding roller 30, each outstanding roller 30 is not setovered to exit roller 28 by elasticity axostylus axostyle 37, and corresponding outstanding 33 radially outermost end and any a part of exit roller 28 of each outstanding roller 30 disengage.Thereby with top described the same about first embodiment that illustrates, the protruding 33b of each radially outermost end of outstanding 33 can not be worn.
Although describe the preferred embodiments of the present invention in conjunction with the accompanying drawings in detail, it being understood that the present invention can otherwise embody.
In the illustrated embodiment, hub 34 in the middle of each outstanding roller 30 is configured to include two outstanding 33 and.According to paper-advance unit of the present invention can adopt respectively include at least three outstanding and be arranged on the outstanding roller of hubs in the middle of adjacent two between outstanding at least two.In detail, as long as paper-advance unit is arranged such that the annular projection branch is located on the intake roller, thereby in the face of being arranged on the middle hub between described at least three in outstanding two, and make two small diameter portion be located at respectively on the axially relative both sides of annular projection part, this paper-advance unit just falls in the technology category of the present invention.
It being understood that the present invention can and revise embody with multiple change, those skilled in the art can expect these changes and modification not deviating from the present invention under the situation of main idea defined in the appended claims and scope.
Claims (23)
1. paper-advance unit comprises:
Intake roller (28) by drive source (62) driving; With
Outstanding roller (30), the part of this outstanding roller and intake roller is relative on axially at it, and setovers to this intake roller, and described outstanding roller and intake roller are cooperated mutually, and with paper feed when remaining on paper between them, this paper-advance unit is characterised in that,
Described outstanding roller comprises two outstanding (33) and is arranged on two middle hubs (34) between outstanding, is used for limiting a spacing, the external diameter of each during the external diameter of this centre hub (34) is given prominence to less than two at two between outstanding; And
Described intake roller comprises: major diameter part (32), and it is relative with middle hub, so that place between two outstanding radially outers separately; With two small diameter portion, this small diameter portion lays respectively at the axially relative both sides of major diameter part, thereby extends beyond two outstanding outer axial end faces separately, and the external diameter of each small diameter portion is all less than major diameter external diameter partly.
2. paper-advance unit according to claim 1, wherein, described outstanding roller is provided with a plurality of, makes them along axially being spaced from each other of intake roller, and described large-diameter portion is arranged with a plurality ofly, and the middle hub with each outstanding roller is relative respectively to make them.
3. paper-advance unit according to claim 1, this device also comprise elastomeric element (37), and these parts make outstanding roller setover to described intake roller.
4. paper-advance unit according to claim 3, wherein, described elastomeric element is elasticity axostylus axostyle (37), it supports described outstanding roller with rotary way, and allows by deflection.
5. paper-advance unit according to claim 1, wherein, described two small diameter portion are two circular groove parts (31), corresponding two outstanding can insertions wherein.
6. paper-advance unit according to claim 5, wherein, described intake roller comprises two circumferential parts, is provided with described two circular groove partial sum major diameter parts between them, the external diameter of these two circumferential parts equals the external diameter of major diameter part.
7. paper-advance unit according to claim 1, wherein, each axial end of major diameter part and the gap between corresponding two each outstanding axial inner ends faces are smaller or equal to 1 millimeter.
8. paper-advance unit according to claim 7, wherein, described major diameter partly has when it is axially measured the width dimensions smaller or equal to 2 millimeters.
9. paper-advance unit according to claim 1, wherein, described major diameter partly has the peripheral surface that forms the curved surface (41) that axially protrudes, and the external diameter of this curved surface is greater than the external diameter of the axial end of described major diameter part.
10. paper-advance unit according to claim 1, wherein, described major diameter partly has some rounding corner parts, and each axial end of major diameter part links to each other in each rounding corner part office with peripheral surface.
11. paper-advance unit according to claim 1, wherein, described major diameter partly has some corner parts of cutting sth. askew, and each axial end of major diameter part links to each other in the corner part office of respectively cutting sth. askew with peripheral surface.
12. paper-advance unit according to claim 1, wherein, described outstanding roll forming becomes body units that comprise two outstanding and middle hubs and constitute.
13. according to each described paper-advance unit among the claim 1-12, wherein, described corresponding two outstanding radially outermost end and corresponding two small diameter portion disengage.
14. paper-advance unit according to claim 13, wherein, the corresponding axial end of described corresponding two outstanding axial inner ends faces and described major diameter part disengages.
15. paper-advance unit according to claim 13, wherein, when paper was not between described outstanding roller and intake roller, outstanding roller was not setovered to intake roller.
16. paper-advance unit according to claim 13, wherein, when paper was not between described outstanding roller and intake roller, the peripheral surface of major diameter part contacted with the peripheral surface of middle hub.
17. paper-advance unit according to claim 16, wherein, when paper was not between described outstanding roller and intake roller, described outstanding roller was setovered to described intake roller.
18. paper-advance unit according to claim 17, wherein, the peripheral surface of hub has pair of angled part (34a) in the middle of described, they are arranged to contact the peripheral surface of described major diameter part, this in the sloping portion each all form make its external diameter from it with two outstanding corresponding one give prominence to more approaching axial outer end and reduce gradually to described two outstanding centres.
19. paper-advance unit according to claim 13, wherein, described two small diameter portion are two circular groove parts (31), corresponding two outstanding can insertions wherein, and described intake roller comprises two circumferential parts, described two circular groove partial sum large-diameter portion branches are located between described two circumferential portion branch
And described outstanding roller comprises two side hubs (35), and described two outstanding and middle hubs are located between described two side hubs, and
When paper was not between intake roller and outstanding roller, the peripheral surface of corresponding two circumferential parts contacted with the peripheral surface of corresponding two side hubs.
20. paper-advance unit according to claim 19, wherein, when paper was not between outstanding roller and intake roller, outstanding roller was setovered to described intake roller.
21. paper-advance unit according to claim 13, wherein, each axial end of described major diameter part and the gap between described corresponding two each outstanding axial inner ends faces are smaller or equal to 1 millimeter.
22. paper-advance unit according to claim 21, wherein, described major diameter partly has when it is axially measured the width dimensions smaller or equal to 2 millimeters.
23. an image recorder comprises:
The ink jet type image recording unit is used for wanting document image on the paper of feeding; With
As the paper-advance unit defined in the claim 1, see that along the paper feed direction of paper being carried out feeding this paper-advance unit is arranged on the downstream of described image recording unit, be used for along described paper feed direction paper feed.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004376508A JP4484055B2 (en) | 2004-12-27 | 2004-12-27 | Conveying apparatus and image recording apparatus provided with the same |
| JP2004376508 | 2004-12-27 | ||
| JP2005018127 | 2005-01-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1799971A true CN1799971A (en) | 2006-07-12 |
| CN100564207C CN100564207C (en) | 2009-12-02 |
Family
ID=36735879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200510136280XA Expired - Fee Related CN100564207C (en) | 2004-12-27 | 2005-12-26 | Paper-advance unit and the image recorder of this paper-advance unit is housed |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4484055B2 (en) |
| CN (1) | CN100564207C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102774680A (en) * | 2011-05-13 | 2012-11-14 | 富士施乐株式会社 | Discharge mechanism and image forming apparatus |
| CN103964231A (en) * | 2013-01-31 | 2014-08-06 | 兄弟工业株式会社 | Sheet feeder |
| CN104772995A (en) * | 2014-01-14 | 2015-07-15 | 佳能株式会社 | Conveying device and printing apparatus |
| CN113168745A (en) * | 2018-12-03 | 2021-07-23 | 克兰佩门特创新股份有限公司 | Document transport path without idler roller |
-
2004
- 2004-12-27 JP JP2004376508A patent/JP4484055B2/en active Active
-
2005
- 2005-12-26 CN CNB200510136280XA patent/CN100564207C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102774680A (en) * | 2011-05-13 | 2012-11-14 | 富士施乐株式会社 | Discharge mechanism and image forming apparatus |
| CN102774680B (en) * | 2011-05-13 | 2016-06-22 | 富士施乐株式会社 | Output mechanism and image processing system |
| CN103964231A (en) * | 2013-01-31 | 2014-08-06 | 兄弟工业株式会社 | Sheet feeder |
| CN103964231B (en) * | 2013-01-31 | 2016-05-18 | 兄弟工业株式会社 | Sheet feeding device |
| CN104772995A (en) * | 2014-01-14 | 2015-07-15 | 佳能株式会社 | Conveying device and printing apparatus |
| CN113168745A (en) * | 2018-12-03 | 2021-07-23 | 克兰佩门特创新股份有限公司 | Document transport path without idler roller |
| CN113168745B (en) * | 2018-12-03 | 2023-11-14 | 克兰佩门特创新股份有限公司 | Document transport path without idler roller |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4484055B2 (en) | 2010-06-16 |
| CN100564207C (en) | 2009-12-02 |
| JP2006182482A (en) | 2006-07-13 |
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