CN100421964C - Paper feeding mechanism and printer with the same mechanism - Google Patents
Paper feeding mechanism and printer with the same mechanism Download PDFInfo
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- CN100421964C CN100421964C CNB2004100493467A CN200410049346A CN100421964C CN 100421964 C CN100421964 C CN 100421964C CN B2004100493467 A CNB2004100493467 A CN B2004100493467A CN 200410049346 A CN200410049346 A CN 200410049346A CN 100421964 C CN100421964 C CN 100421964C
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- paper
- paper feed
- pickup roller
- printing equipment
- supporting plate
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Abstract
The present invention relates to a paper feeding mechanism which comprises a paper separating plate, a paper feeding supporting plate, a paper taking roller, a paper taking arm and an elastic member, wherein the paper feeding supporting plate used for the placement of paper is obliquely erected on the upper surface of the paper separating plate, and the paper taking roller is positioned on the front side of the paper feeding supporting plate to roll paper in a downward direction; thus, the paper feeding mechanism can feed out the paper sheet by sheet by the paper separating plate. The paper taking arm is positioned above the paper separating plate and is connected with and drives the paper taking roller; the elastic member is connected to the paper taking arm to provide acting force to drive the paper roller, so the distance between the paper taking roller and the paper feeding supporting plate can be dynamically regulated by the matching of the thickness of paper.
Description
Technical field
The present invention relates to a kind of paper feed mechanism and use the printing equipment of this paper feed mechanism, particularly relate to and a kind ofly have fixed paper feed roller with paper feed mechanism that drives file and the printing equipment that uses this paper feed mechanism.
Background technology
And even in the design of facsimile machine, printer multifunctional paper feeding machine,, has a paper feed mechanism usually in order to meet the demand of a large amount of paper operations.The user can put into this paper feed mechanism with a large amount of paper, and paper feed mechanism can carry out the work of separation, with paper one by one in the feed-in machine, with fax, print, operation such as photomechanical printing.
Please refer to shown in Figure 1ly, it is the schematic diagram of a typical paper feed mechanism.As shown in FIG., this paper feed mechanism 10 has a paper placing slot 12, a layman 14, a rotating shaft 16, and gets a paper arm 18 and a pickup roller 19.Wherein, the two ends of rotating shaft 16 are fixed on the two sides of paper placing slot 12, and layman 14 is installed on the lower end of paper placing slot 12.Simultaneously, an end of getting paper arm 18 is coupling to rotating shaft 16, and the other end is connected with pickup roller 19.Along with the change of paper sheet thickness in the paper placing slot 12, getting paper arm 18 and be with rotating shaft 16 be that the center is rotated, and the position with adjustment pickup roller 19 makes pickup roller 19 continue to be pressed on the upper surface of paper.
It should be noted that pickup roller 19 must continue to be pressed on the upper surface of paper in the paper feed mechanism 10 of Fig. 1, and impose paper one positive force, drive paper to produce enough frictional force.Please refer to shown in Fig. 2 A and Fig. 2 B, it is the side view of paper feed mechanism under full paper state and empty paper state of Fig. 1.As shown in FIG., the moment T that rotation produced of rotating shaft 16 not only drives the pickup roller got on the paper arm 18 19 and rotates, and simultaneously, also drives and gets paper arm 18 and forward rotate, and make pickup roller 19 be pressed on paper 20 upper surfaces, and impose the enough positive forces of paper 20.In addition, when pickup roller 19 drive paper 20 fed out downwards, the lower edge of paper 20 was subjected to stopping of layman 14 and produces warpage (buckling).This warpage action impelling the most surperficial paper 20 is separated with other paper, and is fed out separately.
Shown in Fig. 2 A, under full paper state, pickup roller 19 is P1 with the contact position of paper 20, and the separation of P1 and layman 14 distance is D1.Along with paper 20 quantity reduce, until empty paper state shown in Fig. 2 B, pickup roller 19 is pressure bonded to the bottom surface of paper placing slot 12, and its contact position with paper placing slot 12 is P2, and the separation of P2 and layman 14 is apart from being D2.As above-mentioned, along with the change of paper 20 quantity, the mobile route of pickup roller 19 is one to be the circular arc S at center with rotating shaft 16.Otherwise the fixed-site of layman 14 is constant.Therefore, along with the change of number of paper, pickup roller 19 is also constantly changing with the contact position of paper 20, and causes the change of separation distance.
Please refer to shown in Figure 3ly, it is the schematic diagram of another typical paper feed mechanism.Be compared to the paper feed mechanism of Fig. 1, the rotating shaft 26 of this paper feed mechanism is installed on paper placing slot 22 belows, upwards is pressure bonded to paper surface to the right and get paper arm 28.Because to get paper arm 28 also is to be coupling to rotating shaft 26, therefore, along with the change of number of paper, it is the circular arc S ' at center with rotating shaft 26 that the mobile route of pickup roller 29 forms one.Cause the pickup roller 29 and the contact position of paper constantly changing, and cause the change of separation distance.
Generally speaking, separation distance is long more, and it is big more that paper is subjected to the distortion (buckling) that stopping of layman produced.But, twisted the effect that senior general influences separation, and caused the generation of holding paper phenomenon.Otherwise if the separation distance is dwindled, the rigidity of paper front edge improves and difficult generation distortion.In the case, if will make paper produce distortion, pickup roller must impose bigger frictional force to paper, and simultaneously, the resistance that layman produced also improves relatively.Therefore, paper will be subjected to bigger active force, and cause paper sheet break easily.Simultaneously, the excessive pickup roller that also causes easily of the resistance of layman dallies.
In sum, the separation distance is excessive or too small, all can influence the effect of separation, and accidents such as generation holding paper or paper sheet break, yet, no matter be Fig. 1 or the paper feed mechanism of Fig. 3, the size of separation distance, stable and consistent separation effect promptly can't be kept along with the number of paper that is positioned in paper placing slot 12 and 22 produces obviously change in the capital.
So, in order to improve the separation stability of paper feed mechanism, avoid the phenomenon of holding paper and paper sheet break simultaneously, with operating efficiency that improves the affairs machine and the time waste of saving the holding paper eliminating, how to improve the design of paper feed mechanism, make the separation distance be maintained at certain value as far as possible, become the category that needs most improvement.
Summary of the invention
Main purpose of the present invention is to provide a paper feed mechanism, no matter how the number of paper that is positioned in the paper placing slot changes, all has consistent separation distance, so that stable paper feed effect to be provided.
Paper feed mechanism of the present invention is in order to in the paper feed-in affairs machine, comprises that one minute cardboard, a paper feed supporting plate, a pickup roller, gets a paper arm and an elastic component; Wherein, the paper feed-in mouth that divides cardboard to be positioned at the affairs machine, and at the upper surface of minute cardboard, tiltedly upright have a paper feed supporting plate, to place paper; Pickup roller is positioned at the front side of paper feed supporting plate, and is pressed together on the paper, makes downwards via in minute cardboard feed-in affairs machine with the scrolling paper; Get the paper arm and be positioned at branch cardboard top, and connect and drive pickup roller, and elastic component is connected to and gets the paper arm, provides an active force to order about the pickup roller closing to paper, makes the distance of pickup roller and paper feed supporting plate, can cooperate paper thickness dynamically to adjust.Get the moving range of paper arm greater than the variation of the paper sheet thickness under full paper and the empty paper situation again.
In one embodiment of this invention, elastic component uses a torsionspring, makes pickup roller under the most approaching and the situation away from the paper feed blade position, and torsionspring can provide big or small in fact close moment.
In one embodiment of this invention, get the paper arm and drive pickup roller, make along the direction of parallel minute cardboard and move, to keep pickup roller and the distance of dividing cardboard, promptly so-called separation distance.
In one embodiment of this invention, elastic component uses an extension spring, makes pickup roller under the most approaching and the situation away from the paper feed blade position, and extension spring can provide big or small in fact close moment.
In one embodiment of this invention, directly utilize the own weight of getting the paper arm to order about and get the oblique lower slider of paper arm, and make pickup roller continue to be pressed together on the paper, therefore, can save the use of elastic component.
In one embodiment of this invention, the paper feed supporting plate is vertical mutually with the moving direction of getting the paper arm, so that stable positive force to be provided.
Can be further understood by following detailed Description Of The Invention and institute's accompanying drawing about the advantages and spirit of the present invention.
Description of drawings
Fig. 1 is the schematic diagram of a typical paper feed mechanism;
Fig. 2 A and Fig. 2 B are the side view of paper feed mechanism under full paper state and empty paper state of Fig. 1;
Fig. 3 is the schematic diagram of another typical paper feed mechanism;
Fig. 4 A and Fig. 4 B are a preferred embodiment of paper feed mechanism of the present invention, the side view under full paper state and empty paper state;
Fig. 5 A and Fig. 5 B get the cunning of paper arm and roller slide rail and close structure, the side view of another embodiment in the paper feed mechanism of the present invention;
Fig. 6 is the side view of another embodiment of paper feed mechanism of the present invention;
Fig. 7 A and Fig. 7 B are the another embodiment of paper feed mechanism of the present invention, the side view under full paper state and empty paper state;
Fig. 8 A and Fig. 8 B are an embodiment again of paper feed mechanism of the present invention, the side view under full paper state and empty paper state.
The specific embodiment
In the following description, for trying to achieve the consistency that the technology of the present invention explains orally, thus in different embodiment, identical but shaped slightly is different as if assembly function is arranged, then still represent with identical title and figure number.
Please refer to shown in Fig. 4 A and Fig. 4 B, it is a preferred embodiment of paper feed mechanism of the present invention, the side view under full paper state and empty paper state.As shown in FIG., paper feed mechanism can be added on an affairs machine (not icon) or printing equipment (not icon) outward, or on-line equipment is in an affairs machine or printing equipment.And comprising one minute cardboard 104, a paper feed supporting plate 102, a pickup roller 109 and, this paper feed mechanism gets paper arm 108.Wherein, divide the paper feed-in mouth A of cardboard 104 in alignment with the affairs machine, and at the upper surface of minute cardboard 104, tiltedly upright have a paper feed supporting plate 102, to place paper 120.Pickup roller 109 is positioned at the front side of paper feed supporting plate 102, and is pressed together on the paper 120, makes downwards via in minute cardboard 104 feed-in affairs machines with scrolling paper 120.Get paper arm 108 and be positioned at branch cardboard 104 tops, and connect drive pickup roller 109.It should be noted that aforementioned moving range of getting paper arm 108 changes greater than paper thickness under full paper and the empty paper situation, therefore, the distance of pickup roller 109 and paper feed supporting plate 102 is cooperated the thickness of paper 120 dynamically to adjust.It should be noted that in this embodiment, be described with regard to the state of feed-in paper, yet be not limited to this, but paper carrier of the present invention can be applicable to the programmed recording medium of other kind, as transparency.
As shown in FIG., in order to guide the moving direction of getting paper arm 108, a rolling wheel guide rails 106 is arranged at contiguous paper feed supporting plate 102 places.And to get paper arm 108 and can cooperate the situation of different paper varied in thickness to adjust its position in order to make, 102 of this rolling wheel guide rails 106 and paper feed supporting plates accompany an inclination angle x.Have one first prominent axle 122 and 1 second prominent axle 124 on the paper arm 108 and get, sleeve to respectively in this rolling wheel guide rails 106.Therefore, can guarantee to get paper arm 108 and can move along the direction of parallel rolling wheel guide rails 106, in other words, pickup roller 109 promptly is to be arranged on the rolling wheel guide rails 106 in movable mode.Except getting prominent the axle 122 and second prominent axle 124 of first on the paper arm 108 by being arranged on, guarantee outside its moving direction, shown in Fig. 5 A and Fig. 5 B, also can use strip projection 126 to replace first prominent the axle 122 and second prominent axle 124, this strip projection 126 is identical approximately with the width of rolling wheel guide rails 106, therefore, can guarantee to get paper arm 108 and only can do linear moving along the direction of roller slide rail 106.
One extension spring (tensional spring) the 110th is connected to along the trend of rolling wheel guide rails 106 and gets paper arm 108, providing an active force to order about pickup roller 109, and optionally contact and drive paper 120 with paper 120 with respect to paper feed supporting plate 102 motion.Again, in order to make pickup roller 109 and to divide the distance of 104 of cardboards (is so-called separation apart from a), under full paper state and empty paper state, all can keep certain, the trend of rolling wheel guide rails 106 is the trends that are parallel to branch cardboard 104, therefore, get paper arm 108 and drive pickup roller 109, make along the direction of parallel minute cardboard 104 and move.
Again, for the moving direction of further guaranteeing to get paper arm 108 is the trend that is parallel to branch cardboard 104, please refer to shown in Figure 6, in another embodiment of the present invention, two mutual parallel guide grooves 142 and 144 are arranged at contiguous paper feed supporting plate 102 places, and, get and have one first prominent axle, the 152 one the second prominent axles 154 on the paper arm 108, sleeve to respectively in aforementioned two guide grooves 142 and 144, and pickup roller 109 is arranged between this two prominent axle 152 and 154.Therefore, can guarantee that pickup roller 109 can move along the direction of guide groove 142 and 144.
Generally speaking, if this paper feed mechanism is installed in the printing equipment, aforementioned paper feed supporting plate 102, branch cardboard 104 all are arranged on the housing of this printing equipment with rolling wheel guide rails 106.Promptly corresponding to and get paper arm 108 and pickup roller 109, is fixed.
In addition, between rolling wheel guide rails 106 and paper feed supporting plate, accompany an inclination angle x, when the angle of this inclination angle x is 90 degree, promptly this rolling wheel guide rails 106 is vertical in fact each other with this paper feed supporting plate 102, the elastic restoring force of aforementioned extension spring 110 can be converted to positive force fully is pressed on the paper 120 pickup roller 109, therefore, can use a stable positive force source as.
It should be noted that in the present invention the position of getting paper arm 108 dynamically changes along with paper 120 number change, therefore, the traditional kind of drive shown in Fig. 2 A, and be not suitable for this.For head it off, the present invention utilizes the design of turn gear (Swing Gear) group, is sent to pickup roller 109 with the power with motor.Shown in Fig. 4 A, turn gear train 130 comprises a turn plate 132, a central gear 134 and a turn gear 136, central gear 134 and turn plate 132 are connected to the rotating shaft of motor (not shown), simultaneously, central gear 134 is positioned on this turn plate 132 with turn gear 136, and Nie closes mutually.The power that motor produced not only drives turn plate 132, the relay gear 138 that turn gear 136 is engaged to get on the paper arm 109.Simultaneously, also by the rotation of central gear 134, drive the pickup roller 109 that is coupling to relay gear 138 and rotate with turn gear 136.
In the aforementioned embodiment, use extension spring 110, be pressure bonded to the strength source on paper 120 surfaces as ordering about pickup roller 109, yet also be not limited to use extension spring 110.Please refer to shown in Fig. 7 A and Fig. 7 B the another embodiment of paper feed mechanism of the present invention, the side view under full paper state and empty paper state.The extension spring 110 that this embodiment uses curved spring 112 to replace among Fig. 4 A and Fig. 4 B is pressure bonded to paper 120 surfaces to order about pickup roller 109.It should be noted that, in order to make pickup roller 109 under the most approaching and situation away from paper feed supporting plate 102 positions (being empty paper state and full paper state), torsionspring 112 can provide big or small in fact close moment, the original length of torsionspring 112 should improve as far as possible, to reduce under the spring unit length change amount change amount of its elastic restoring force.
In the embodiment of earlier figures 4A and Fig. 7 A, be to use elastic component, i.e. extension spring wherein and curved spring, the application of force is ordered about the surface that pickup roller 109 is pressure bonded to paper 120, yet also is not limited thereto.Please refer to shown in Fig. 8 A and Fig. 8 B, in an embodiment more of the present invention, aforementioned rolling wheel guide rails 106 is to be used as a chute, and, the trend of this rolling wheel guide rails 106 has an inclination angle y, and the sliding paper arm 108 of getting that is combined in the rolling wheel guide rails 106 is subjected to ordering about of own wt, and tiltedly lower slider continues to be pressure bonded on the paper 120.Therefore, pickup roller 109 acts on the positive force size of paper surface, and the size that is subjected to aforementioned inclination angle y determines with the weight of getting paper arm 108, and present embodiment also can be save the use of elastic component.
Hence one can see that, is compared to traditional paper feed mechanism, and paper feed mechanism of the present invention has following advantage:
As Fig. 4 A, Fig. 5 A and shown in Figure 6, the present invention utilizes rolling wheel guide rails 106, gets the moving direction of paper arm 108 with guiding, and pickup roller 109 is moved along the direction of parallel minute cardboard 104, and can guarantee that the separation distance keeps certain.Therefore, can improve the separation stability of paper feed mechanism, avoid the phenomenon of holding paper and paper sheet break simultaneously, with operating efficiency that improves the affairs machine and the time waste of saving the holding paper eliminating.
Shown in Fig. 4 A and Fig. 7 A, the present invention utilizes elastic component (i.e. extension spring 110 and curved spring 112 wherein) to put on the main source of the positive force of paper 120 as pickup roller 109.Therefore, can choose suitable elastic component to provide size suitable positive force, to improve the separation stability of paper feed mechanism according to demand.
The above utilizes preferred embodiment to describe the present invention in detail, but not limit the scope of the invention, and know this type of technology personage and all can obviously suitably do some changes and adjustment, will not lose main idea of the present invention place, also not break away from the spirit and scope of the present invention.
Claims (11)
1. a printing equipment comprises:
One housing, this housing comprises:
One paper feed supporting plate can be for placing recordable media;
One fen cardboard is positioned at the leading edge of this paper feed supporting plate, so that this recordable media is separated by this paper feed supporting plate one by one; And
One guide rail is arranged at contiguous this paper feed supporting plate place, and and this paper feed supporting plate between accompany an inclination angle;
One pickup roller is arranged on this guide rail in movable mode, makes this pickup roller can be with respect to the motion of this paper feed supporting plate, and optionally contacts with this recordable media and drive this recordable media; And
One elastic component is arranged between this pickup roller and this housing, provides an active force to move to this paper feed supporting plate to order about this pickup roller.
2. printing equipment as claimed in claim 1, wherein, this guide rail is parallel to this minute cardboard in fact.
3. printing equipment as claimed in claim 1 comprises that also a motor and a turn gear train are fixed in this printing equipment, and this motor rotates by this pickup roller of this turn gear set drive.
4. printing equipment as claimed in claim 1 comprises that also getting the paper arm is arranged on this guide rail, and this is got has one first prominent axle and one second prominent axle on the paper arm, sleeve to respectively in this guide rail.
5. printing equipment as claimed in claim 4, wherein, this guide rail comprises two mutual parallel guide grooves, and this first prominent axle that this gets the paper arm and this second prominent axle sliding closing in this two guide groove respectively, and this pickup roller is arranged between this two prominent axle.
6. printing equipment as claimed in claim 1 comprises that also getting the paper arm is arranged on this guide rail, and this is got has a strip projection on the paper arm, sleeve in this guide rail, and making this get the paper arm can slide along the direction of this guide rail.
7. a paper feed mechanism is installed on a printing equipment, and with this printing equipment of recordable media feed-in, this paper feed mechanism comprises:
One fen cardboard is positioned at the medium feed-in mouth of this printing equipment;
One paper feed supporting plate tiltedly stands in the upper surface of this minute cardboard, to place this recordable media;
One pickup roller is positioned at the front side of this paper feed supporting plate, and is pressed together on this recordable media, makes with this recordable media of scrolling to move down, via this printing equipment of this minute cardboard feed-in;
One chute be positioned at this minute cardboard top, and its trend has an inclination angle; And
One gets the paper arm, sleeve in this chute, and connect this pickup roller, simultaneously, this weight of getting the paper arm own is ordered about this and is got the oblique lower slider of paper arm, and make this pickup roller continue to be pressed on this recordable media, and this moving range of getting the paper arm is greater than the varied in thickness of filling on this paper feed supporting plate between this recordable media and any this recordable media of unloaded.
8. paper feed mechanism as claimed in claim 7 comprises that also a motor and a turn gear train are fixed in this printing equipment, and this motor rotates by this pickup roller of this turn gear set drive.
9. a paper feed mechanism is installed on a printing equipment, but with this printing equipment of programmed recording medium feed-in, this paper feed mechanism comprises:
One fen cardboard is positioned at the medium feed-in mouth of this printing equipment;
One paper feed supporting plate tiltedly stands on the upper surface of this minute cardboard, but is somebody's turn to do programmed recording medium to place;
One pickup roller is positioned at the front side of this paper feed supporting plate, but and be pressed together on this programmed recording medium, move down but should programmed recording medium make, via this printing equipment of this minute cardboard feed-in with scrolling;
One gets the paper arm, be positioned at this minute cardboard top, and connect this pickup roller, with drive this pickup roller make along parallel in fact this minute cardboard direction move, and this moving range of getting the paper arm is greater than the varied in thickness of filling on this paper feed supporting plate between this recordable media and any this recordable media of unloaded; And
One elastic component is connected to this and gets the paper arm, but provides an active force to order about this pickup roller closing to being somebody's turn to do programmed recording medium.
10. paper feed mechanism as claimed in claim 9, wherein, this elastic component is an extension spring or a torsionspring.
11. paper feed mechanism as claimed in claim 9 comprises that also a motor and a turn gear train are fixed in this printing equipment, and this motor rotates by this pickup roller of this turn gear set drive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100493467A CN100421964C (en) | 2004-06-11 | 2004-06-11 | Paper feeding mechanism and printer with the same mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100493467A CN100421964C (en) | 2004-06-11 | 2004-06-11 | Paper feeding mechanism and printer with the same mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1706654A CN1706654A (en) | 2005-12-14 |
| CN100421964C true CN100421964C (en) | 2008-10-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100493467A Expired - Fee Related CN100421964C (en) | 2004-06-11 | 2004-06-11 | Paper feeding mechanism and printer with the same mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100421964C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101870413B (en) * | 2009-04-21 | 2012-08-22 | 金宝电子工业股份有限公司 | Paper feeding device |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101870412B (en) * | 2009-04-21 | 2012-08-22 | 金宝电子工业股份有限公司 | Paper feeding device |
| CN102249101B (en) * | 2011-04-26 | 2015-09-02 | 苏州佳世达电通有限公司 | Paper-fetching mechanism and apply its printing equipment |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4997179A (en) * | 1988-11-08 | 1991-03-05 | Oki Electric Industry Co., Ltd. | Automatic sheet feeding device |
| US5324124A (en) * | 1993-01-28 | 1994-06-28 | International Business Machines Corporation | Guide system for feed roll entry |
| JPH09314943A (en) * | 1996-05-24 | 1997-12-09 | Seiko Epson Corp | Roller holder and paper feed device of printer using the same |
| CN1333175A (en) * | 2000-07-12 | 2002-01-30 | 明碁电通股份有限公司 | Paper-feeding system |
| CN1357484A (en) * | 2000-12-15 | 2002-07-10 | 明碁电通股份有限公司 | Paper feeder |
-
2004
- 2004-06-11 CN CNB2004100493467A patent/CN100421964C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4997179A (en) * | 1988-11-08 | 1991-03-05 | Oki Electric Industry Co., Ltd. | Automatic sheet feeding device |
| US5324124A (en) * | 1993-01-28 | 1994-06-28 | International Business Machines Corporation | Guide system for feed roll entry |
| JPH09314943A (en) * | 1996-05-24 | 1997-12-09 | Seiko Epson Corp | Roller holder and paper feed device of printer using the same |
| CN1333175A (en) * | 2000-07-12 | 2002-01-30 | 明碁电通股份有限公司 | Paper-feeding system |
| CN1357484A (en) * | 2000-12-15 | 2002-07-10 | 明碁电通股份有限公司 | Paper feeder |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101870413B (en) * | 2009-04-21 | 2012-08-22 | 金宝电子工业股份有限公司 | Paper feeding device |
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| Publication number | Publication date |
|---|---|
| CN1706654A (en) | 2005-12-14 |
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