US20090256307A1 - Sheet separating mechanism of an auto sheet feeder and auto sheet feeder incorporating the same - Google Patents
Sheet separating mechanism of an auto sheet feeder and auto sheet feeder incorporating the same Download PDFInfo
- Publication number
- US20090256307A1 US20090256307A1 US12/103,555 US10355508A US2009256307A1 US 20090256307 A1 US20090256307 A1 US 20090256307A1 US 10355508 A US10355508 A US 10355508A US 2009256307 A1 US2009256307 A1 US 2009256307A1
- Authority
- US
- United States
- Prior art keywords
- pad
- spring
- bracket
- pick roller
- sheets
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H3/00—Separating articles from piles
- B65H3/46—Supplementary devices or measures to assist separation or prevent double feed
- B65H3/52—Friction retainers acting on under or rear side of article being separated
- B65H3/5207—Non-driven retainers, e.g. movable retainers being moved by the motion of the article
- B65H3/523—Non-driven retainers, e.g. movable retainers being moved by the motion of the article the retainers positioned over articles separated from the bottom of the pile
- B65H3/5238—Retainers of the pad-type, e.g. friction pads
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2402/00—Constructional details of the handling apparatus
- B65H2402/50—Machine elements
- B65H2402/54—Springs, e.g. helical or leaf springs
Definitions
- the press plate is pivotally configured on the retaining arms of the torsion spring and presses on the separator pad, the press plate can adjust itself constantly to always press the separator pad close to the pick roller, which ensures that only one paper sheet can pass through between the separator pad and the pick roller to be conveyed to the office device once. Thereby the reliability of paper separating of the sheet separating mechanism is enhanced.
- the press pad 500 includes a pad holder 510 and a pad press portion 520 bending and extending forward from the bottom of the pad holder 510 .
- the pad holder 510 is fixed in the fixing groove 326 of the bracket 300 .
- the pad press portion 520 is placed in front of the spring arms 422 .
- the tip of the pad press portion 520 faces the surface of the pick roller 100 .
- a small gap is formed between the tip of the pad press portion 520 and the pick roller 100 .
Abstract
An auto sheet feeder used for a device comprises an upper frame, a pick roller and a sheet separating mechanism secured on the upper frame. The sheet separating mechanism includes a bracket and a pair of arms disposed on the bracket and spring-biased toward the pick roller. A separator pad is disposed on the bracket and spring-biased toward the pick roller. A press plate is positioned on the bracket and presses against the separator pad. A torsion spring mounted above the press plate has at least two coil portions. Two adjacent ends of the coil portions extend toward the same side and then joint each other to form a contact portion which always props the upper frame. Two ends of the torsion spring have a retaining arm respectively. The two retaining arms are opposite each other and pivotally engage to two sides of the press plate respectively. The torsion spring is compressed by the press plate when the sheets push the separator pad and pushes the press plate and the separator pad to be reposition after the lowermost one of the sheets is separated.
Description
- 1. Field of the Invention
- This present invention relates to an auto sheet feeder applicable to an office device such as a printer, a copier and a scanner, and more particularly to a sheet separating mechanism of the auto sheet feeder and an auto sheet feeder having the same.
- 2. The Related Art
- A conventional auto sheet feeder is generally used in various office devices such as a printer, a copier, a scanner and the like, and it is highly desirable to separate single paper sheet from a stack of paper sheets placed on an a paper feeding plate. So a sheet separating mechanism is provided.
- With reference to
FIGS. 1 and 2 , a conventional sheet separating mechanism includes apick roller 910, aseparator pad 920, apress plate 930 and aspring 940. Thepress plate 930 includes aplate portion 932 pressing against theseparator pad 920, a pair of connectingrods 934 extending upward from two ends of theplate portion 932 and a pair ofpivots 936 respectively protruding outward from the two connectingrods 934. The twopivots 936 are pivotally mounted to an upper frame (not shown). One end of thespring 940 is fastened on the middle of theplate portion 932 and the other end of thespring 940 resists on the upper frame. Theseparator pad 920 is pressed on the surface of thepick roller 910 due to the elasticity of thespring 940. Due to different friction forces among thepick roller 910, the pieces of paper and theseparator pad 920, pieces of paper are conveyed to the office devices one by one. - However, in
FIG. 3 , in operation, when toomuch paper sheets 950 are inserted into a region A between theseparator pad 920 and thepick roller 910 of the conventional sheet separating mechanism, theseparator pad 920 is raised up due to certain thickness of thesheets 950 and then drives the press plate 930 (seeFIG. 1 ) to move upward. So the front of theseparator pad 920 is away from thepick roller 910 to form a region B. And the attrition produced in use also causes the front of theseparator pad 920 to be away from thepick roller 910. When the front of theseparator pad 920 keeps a region B from thepick roller 910, the toomuch paper sheets 950 inserted into the region A can all pass through between theseparator pad 920 and thepick roller 910 and then be conveyed to the office device. In this case, the sheet separating is false, namely, reliability of sheet separating is much low. - Accordingly, an object of the invention is to provide a sheet separating mechanism of an auto sheet feeder to enhance the reliability of paper separating.
- To achieve the object, a sheet separating mechanism used for an auto sheet feeder having a pick roller and an upper frame is provided. The mechanism includes a bracket and a pair of spring arms disposed on the bracket and spring-biased toward the pick roller for maintaining a plurality of sheets on the pick roller during transportation of the sheets. A separator pad is disposed on the bracket and spring-biased toward the pick roller for cooperating with the pick roller to permit further transportation of a lowermost sheet of the plurality of the sheets. A press plate is positioned on the bracket and presses against the separator pad. A torsion spring is mounted above the press plate and has at least two coil portions spaced and opposite to the adjacent coil portion. Two adjacent ends of the coil portions extend toward the same side and then joint each other to form a contact portion which always props the upper frame. Two ends of the torsion spring have a retaining arm respectively. The two retaining arms pivotally engage to two sides of the press plate respectively. The torsion spring is compressed by the press plate when the sheets push the separator pad to detach from the pick roller and pushes the press plate and the separator pad to be reposition after the lowermost one of the sheets is separated.
- An auto sheet feeder used for a device where separation of a single sheet from a plurality of sheets is desired, the feeder comprises an upper frame, a pick roller and a sheet separating mechanism secured on the upper frame. The sheet separating mechanism includes a bracket and a pair of spring arms disposed on the bracket and spring-biased toward the pick roller for maintaining a plurality of sheets on the pick roller during transportation of the sheets. A separator pad is disposed on the bracket and spring-biased toward the pick roller for cooperating with the pick roller to permit further transportation of a lowermost sheet of the plurality of the sheets. A press plate is positioned on the bracket and presses against the separator pad. A torsion spring is mounted above the press plate and has at least two coil portions spaced and opposite to the adjacent coil portion. Two adjacent ends of the coil portions extend toward the same side and then joint each other to form a contact portion which always props the upper frame. Two ends of the torsion spring have a retaining arm respectively. The two retaining arms pivotally engage to two sides of the press plate respectively. The torsion spring is compressed by the press plate when the sheets push the separator pad to detach from the pick roller and pushes the press plate and the separator pad to be reposition after the lowermost one of the sheets is separated.
- As described above, because the press plate is pivotally configured on the retaining arms of the torsion spring and presses on the separator pad, the press plate can adjust itself constantly to always press the separator pad close to the pick roller, which ensures that only one paper sheet can pass through between the separator pad and the pick roller to be conveyed to the office device once. Thereby the reliability of paper separating of the sheet separating mechanism is enhanced.
- The present invention will be apparent to those skilled in the art by reading the following description of a preferred embodiment thereof, with reference to the attached drawings, in which:
-
FIG. 1 is a perspective view of a conventional sheet separating mechanism; -
FIG. 2 is a lateral view of the sheet separating mechanism inFIG. 1 ; -
FIG. 3 is a lateral view of a state of the paper separating process of the sheet separating mechanism inFIG. 1 ; -
FIG. 4 is a perspective view of a sheet separating mechanism of an auto sheet feeder according to the present invention; -
FIG. 5 is a perspective view of an upper frame of the auto sheet feeder; -
FIG. 6 is an enlarged view of a part VI inFIG. 5 ; -
FIG. 7 is an exploded view of the sheet separating mechanism inFIG. 4 ; -
FIG. 8 is another perspective view of a bracket and a pick spring of the sheet separating mechanism inFIG. 7 ; -
FIG. 9 is a perspective view of a torsion spring of the sheet separating mechanism inFIG. 7 ; -
FIG. 10 is a perspective view of a press plate of the sheet separating mechanism inFIG. 7 ; -
FIG. 11 is a perspective view of a natural state of the torsion spring of the sheet separating mechanism inFIG. 7 ; -
FIG. 12 is a perspective view of a distorted state of the torsion spring of the sheet separating mechanism inFIG. 7 ; and -
FIG. 13 is a lateral view of the sheet separating mechanism inFIG. 4 . - We define the conveying direction of the paper as a front direction.
- Referring
FIG. 4 toFIG. 7 , an auto sheet feeder has anupper frame 200 and apick roller 100 located under theupper frame 200. Asheet separating mechanism 10 of the auto sheet feeder includes abracket 300, apick spring 400, apress pad 500, aseparator pad 600, apress plate 710 and atorsion spring 740. - Refer to
FIGS. 5 and 6 , theupper frame 200 has apress surface 210 which faces thebracket 300. Two supportinglumps 220 protrude from thepress surface 210. Each supportinglump 220 defines a protrudingpeg 222 protruding toward each other. - In
FIGS. 4 , 7 and 8, thebracket 300 is mounted to theupper frame 200 and disposed above thepick roller 100. Thebracket 300 has asupport board 310. A plurality of location pegs 311 vertically project upward from the proper places of thesupport board 310. Two lateral sides of thesupport board 310 extend upward and downward to form a fixingportion 340 respectively which is fixed on theupper frame 200. The bottom of thesupport board 310 bents and extends backward to form aprop board 320. The middle surface of theprop board 320 is dented to form a receivinggroove 322. Two sparinggrooves 324 are formed on two sides of the receivinggroove 322 for economizing on stuff. The backside of theprop board 320 is dented to form a fixinggroove 326. Two fixingpegs 328 extend downward from the bottom of theprop board 320. - The
pick spring 400 has arectangular holding portion 410. A plurality oflocation holes 411 are defined in theholder portion 410 for mating with the location pegs 311 to fix theholder portion 410 on thesupport board 310 of thebracket 300. Aspring press portion 430 extends downward from the bottom of the holdingportion 410. Thespring press portion 430 includes apress arm 432 to be received in the receivinggroove 322 and apress tip 434 bent forward from the free end of thepress arm 432. Two ends of the top of the holdingportion 410 extend and then bend downward to form two clippingportions 421. The clippingportions 421 clip the top rim of thesupport board 310. The free end of each clippingportion 421 extends and then bends forward to form aspring arm 422 with a hooked tip pressed on surface of thepick roller 100. - The
press pad 500 includes apad holder 510 and apad press portion 520 bending and extending forward from the bottom of thepad holder 510. Thepad holder 510 is fixed in the fixinggroove 326 of thebracket 300. Thepad press portion 520 is placed in front of thespring arms 422. The tip of thepad press portion 520 faces the surface of thepick roller 100. A small gap is formed between the tip of thepad press portion 520 and thepick roller 100. - The
separator pad 600 is placed in front of thepress pad 500. The friction coefficient of theseparator pad 600 is larger than that of the paper sheets and smaller than that of thepick roller 100. Theseparator pad 600 has aseparator portion 630 of a block shape. Two fixingholes 632 are defined in theseparator portion 630 for mating with the fixing pegs 328 to fix theseparator pad 600 on theprop board 320 of thebracket 300. Aseparator press portion 636 is formed in theseparator portion 630. Thepress tip 434 of thepick spring 400 presses on theseparator press portion 636 to make theseparator press portion 636 protrude downward to contact thepick roller 100. - With reference to
FIGS. 4 , 7 and 10, thepress plate 710 includes aplate portion 711 of a block shape and two axial protrudingportions 715 protruding upward from two ends of theplate portion 711. Each axial protrudingportion 715 defines anaxial hole 716 penetrating transversely therethrough. Theplate portion 711 presses on the surface of theseparator portion 630 of theseparator pad 600. - In
FIGS. 4 , 7 9 and 11, thetorsion spring 740 is mounted transversely above thepress plate 710 and has twocoil portions 741 spaced and opposite to each other. Eachcoil portion 741 is hollow and arranged around the protrudingpeg 222. Two adjacent ends of thecoil portions 741 extend toward the same side and then joint each other to form aU-shaped contact portion 742 which always presses on thepress surface 210 of theupper frame 200. Two ends of thetorsion spring 740 define a retainingarm 743 extending and bending outward respectively. The two retainingarms 743 pivotally engage to two sides of thepress plate 710 respectively. The tip of each retainingarm 743 bends to form apivot 744. The twopivots 744 are pivotally inserted into the twoaxial holes 716 of thepress plate 710 respectively. - When the
sheet separating mechanism 10 is assembled, thecoil portions 741 of thetorsion spring 740 are distorted. The retainingarms 743 arranged on thepress plate 710 and thecontact portion 742 pressing on theupper frame 200 respectively produce force F′ and force F as showing inFIG. 12 . - With reference to
FIGS. 4 , 7 and 13, in operation, pieces of paper placed on the paper feeding tray (not shown) is drawn forward along with the rotation of thepick roller 100 due to their own weight. The leading ends of the paper sheets firstly push forward thespring arms 422 of thepick spring 400 and enter between thepick roller 100 and thespring arms 422. Thespring arms 422 exert a pressure on the paper, which adds the friction between the lowermost paper and thepick roller 100. Due to the action of thespring arms 422, the lowermost paper is conveyed forward with the rotation of thepick roller 100. Thepad holder 510 of thepress pad 500 blocks some pieces of paper from being further conveyed when pieces of paper arrive at thepad holder 510. The left pieces of paper are conveyed forward. Thepad press portion 520 of thepress pad 500 presses the paper sheets to prevent them from curling. - The lowermost paper and the pieces of paper thereon move to the
separator pad 600. As thepress tip 434 of thepick spring 400 presses on theseparator press portion 636, theseparator press portion 636 of theseparator pad 600 approaches thepick roller 100. A few pieces of paper are inserted between theseparator press portion 636 and thepick roller 100 and conveyed to theseparator portion 630 and thepick roller 100. As the retainingarms 743 of thetorsion spring 740 produce the force F showing inFIG. 12 which make thepress plate 710 exert pressure on theseparator portion 630 of theseparator pad 600, then theseparator portion 630 is near to thepick roller 100. When the paper inserted between theseparator portion 630 and thepick roller 100, theseparator portion 630 is raised upward and further drives thepress plate 710 to move upward. Thetorsion spring 740 will further be distorted. So the retainingarms 743 pivotally arranged on thepress plate 710 exert pressure on thepress plate 710 to rotate around thepivots 744 and further press theseparator portion 630 of theseparator pad 600 close to the paper inserted between theseparator portion 630 and thepick roller 100. As the friction coefficient of theseparator pad 600 is larger than that of the paper but smaller than that of thepick roller 100, the paper sheets on the lowermost paper are prevented from entering the position where theseparator portion 630 is in contact, and the lowermost paper only passes through between thepick roller 100 and theseparator portion 630. After the paper is separated completely, thetorsion spring 740 is released to press thepress plate 710 downward, and thepress plate 710 rotates around thepivots 744 and further pushes theseparator portion 630 to contact thepick roller 100 again for a next paper separating. - According to the
sheet separating mechanism 10 of the present invention as described above, because the retainingarms 743 of the distortedtorsion spring 740 produces the force F and thepivots 744 of thetorsion spring 740 are pivotally arranged in theaxial holes 716 of thepress plate 710, thepress plate 710 can adjust itself around thepivots 744 to close to theseparator pad 600, which ensures theseparator pad 600 is always close to thepick roller 100 or the paper inserted between theseparator pad 600 and thepick roller 100 during the process of paper separating. When too much pieces of paper insert between theseparator pad 600 and thepick roller 100, the retainingarms 743 exert pressure on thepress plate 710 to rotate down, which makes the raisedseparator pad 600 close to thepick roller 100 to ensure the friction relation between theseparator pad 600, thepick roller 100 and the paper. So when too much paper sheets insert between theseparator pad 600 and thepick roller 100, only the lowermost paper also can be exactly separated by thesheet separating mechanism 10. So the reliability of paper separating is enhanced. Otherwise, as thetorsion spring 740 is arranged transversely, which reduces the lengthways space and furthermore reduces the bulk of thesheet separating mechanism 10. - An embodiment of the present invention has been discussed in detail. However, the embodiment is merely specific examples for clarifying the technical contents of the present invention and the present invention is not to be construed in a restricted sense as limited to the specific examples. Such modifications and variations that may be apparent to those skilled in the art are intended to be included within the scope of this invention as defined by the accompanying claims.
Claims (5)
1. A sheet separating mechanism for an auto sheet feeder having a pick roller and an upper frame, the mechanism comprising:
a bracket;
a pair of spring arms disposed on the bracket and spring-biased toward the pick roller for maintaining a plurality of sheets on the pick roller during transportation of the sheets;
a separator pad disposed on the bracket and spring-biased toward the pick roller for cooperating with the pick roller to permit further transportation of a lowermost sheet of the plurality of the sheets;
a press plate positioned on the bracket and pressing against the separator pad; and
a torsion spring mounted above the press plate and having at least two coil portions spaced and opposite to the adjacent coil portion, two adjacent ends of the coil portions extending toward the same side and then jointing each other to form a contact portion which always props the upper frame, two ends of the torsion spring having a retaining arm respectively, the two retaining arms pivotally engaging to two sides of the press plate respectively;
wherein the torsion spring is compressed by the press plate when the sheets push the separator pad to detach from the pick roller and pushes the press plate and the separator pad to be reposition after the lowermost one of the sheets is separated.
2. The sheet separating mechanism of an auto sheet feeder as claimed in claim 1 , wherein the bracket further comprises a support board, the bottom of the support board bending and extending backward to form a prop board, two fixing pegs extending downward from the bottom of the prop board, two fixing holes being defined in the separator pad, the two fixing pegs being inserted into the two fixing holes respectively so as to secure the separator pad on the bracket.
3. The sheet separating mechanism of an auto sheet feeder as claimed in claim 1 , wherein the spring arms are part of a pick spring mounted to the bracket, the pick spring further including a spring press portion, a separator press portion being formed on the surface of the separator pad, the spring press portion of the pick spring pressing on the separator press portion.
4. The sheet separating mechanism of an auto sheet feeder as claimed in claim 2 , further comprising a press pad, the press pad including a pad holder and a pad press portion, the backside of the prop board of the bracket being dent to form a fixing groove, the pad holder of the press pad being fixed in the fixing groove, the pad press portion being pressed upon the sheets to prevent curling of the sheets.
5. An auto sheet feeder for a device where separation of a single sheet from a plurality of sheets is desired, the feeder comprising:
an upper frame;
a pick roller; and
a sheet separating mechanism secured on the upper frame, wherein the sheet separating mechanism comprising
a bracket;
a pair of spring arms disposed on the bracket and spring-biased toward the pick roller for maintaining the plurality of sheets on the pick roller during transportation of the sheets;
a separator pad disposed on the bracket and spring-biased toward the pick roller for cooperating with the pick roller to permit further transportation of a lowermost sheet of the plurality of the sheets;
a press plate positioned on the bracket and pressing against the separator pad; and
a torsion spring mounted above the press plate and having at least two coil portions spaced and opposite to the adjacent coil portion, two adjacent ends of the coil portions extending toward the same side and then jointing each other to form a contact portion which always props the upper frame, two ends of the torsion spring having a retaining arm respectively, the two retaining arms pivotally engaging to two sides of the press plate respectively;
wherein the torsion spring is compressed by the press plate when the sheets push the separator pad to detach from the pick roller and pushes the press plate and the separator pad to be reposition after the lowermost one of the sheets is separated.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/103,555 US20090256307A1 (en) | 2008-04-15 | 2008-04-15 | Sheet separating mechanism of an auto sheet feeder and auto sheet feeder incorporating the same |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/103,555 US20090256307A1 (en) | 2008-04-15 | 2008-04-15 | Sheet separating mechanism of an auto sheet feeder and auto sheet feeder incorporating the same |
Publications (1)
Publication Number | Publication Date |
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US20090256307A1 true US20090256307A1 (en) | 2009-10-15 |
Family
ID=41163319
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/103,555 Abandoned US20090256307A1 (en) | 2008-04-15 | 2008-04-15 | Sheet separating mechanism of an auto sheet feeder and auto sheet feeder incorporating the same |
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US (1) | US20090256307A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102476511A (en) * | 2010-11-19 | 2012-05-30 | 虹光精密工业股份有限公司 | Paper feeding device with rib-breaking type elastic gasket and image processing equipment using same |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4887806A (en) * | 1987-02-23 | 1989-12-19 | Sharp Kabushiki Kaisha | Paper transport system for apparatus including facsmile and photocopying machines |
US5163668A (en) * | 1991-08-29 | 1992-11-17 | Xerox Corporation | Retard pad assembly with movable compliant entrance guide |
US5545882A (en) * | 1993-09-28 | 1996-08-13 | Suzuyoshi Corporation | Paper sheet counting machine |
US5549289A (en) * | 1994-10-14 | 1996-08-27 | Hewlett-Packard Company | Paper separator spring assembly for facsimile or copy machine |
US5573338A (en) * | 1993-12-27 | 1996-11-12 | Pfu Limited | Automatic paper feeder and frame structure of document input device |
US6010126A (en) * | 1998-04-23 | 2000-01-04 | Dbtel Incorporated | Sheet-by-sheet paper feeding structure |
US7401774B2 (en) * | 2005-05-13 | 2008-07-22 | Xerox Corporation | Dual friction region separation pad, and media separator and media separator mechanism using same |
-
2008
- 2008-04-15 US US12/103,555 patent/US20090256307A1/en not_active Abandoned
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4887806A (en) * | 1987-02-23 | 1989-12-19 | Sharp Kabushiki Kaisha | Paper transport system for apparatus including facsmile and photocopying machines |
US5163668A (en) * | 1991-08-29 | 1992-11-17 | Xerox Corporation | Retard pad assembly with movable compliant entrance guide |
US5545882A (en) * | 1993-09-28 | 1996-08-13 | Suzuyoshi Corporation | Paper sheet counting machine |
US5573338A (en) * | 1993-12-27 | 1996-11-12 | Pfu Limited | Automatic paper feeder and frame structure of document input device |
US5549289A (en) * | 1994-10-14 | 1996-08-27 | Hewlett-Packard Company | Paper separator spring assembly for facsimile or copy machine |
US6010126A (en) * | 1998-04-23 | 2000-01-04 | Dbtel Incorporated | Sheet-by-sheet paper feeding structure |
US7401774B2 (en) * | 2005-05-13 | 2008-07-22 | Xerox Corporation | Dual friction region separation pad, and media separator and media separator mechanism using same |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102476511A (en) * | 2010-11-19 | 2012-05-30 | 虹光精密工业股份有限公司 | Paper feeding device with rib-breaking type elastic gasket and image processing equipment using same |
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Legal Events
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AS | Assignment |
Owner name: FOXLINK IMAGE TECHNOLOGY CO., LTD., TAIWAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:WU, SHAO-YANG;LIU, WEN-SHENG;LEE, CHUN-KUAN;REEL/FRAME:020806/0658 Effective date: 20080411 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |