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US20080169596A1 - Duplex automatic sheet feeder - Google Patents

Duplex automatic sheet feeder Download PDF

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Publication number
US20080169596A1
US20080169596A1 US11/819,283 US81928307A US2008169596A1 US 20080169596 A1 US20080169596 A1 US 20080169596A1 US 81928307 A US81928307 A US 81928307A US 2008169596 A1 US2008169596 A1 US 2008169596A1
Authority
US
United States
Prior art keywords
passageway
sheet
output tray
duplex
feeder according
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
Application number
US11/819,283
Other languages
English (en)
Inventor
Yung-Chuan Wu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Avision Inc
Original Assignee
Avision Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Avision Inc filed Critical Avision Inc
Assigned to AVISION INC. reassignment AVISION INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: WU, YUNG-CHUAN
Publication of US20080169596A1 publication Critical patent/US20080169596A1/en
Abandoned legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/00567—Handling of original or reproduction media, e.g. cutting, separating, stacking
    • H04N1/0057—Conveying sheets before or after scanning
    • H04N1/00572—Conveying sheets before or after scanning with refeeding for double-sided scanning, e.g. using one scanning head for both sides of a sheet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H85/00—Recirculating articles, i.e. feeding each article to, and delivering it from, the same machine work-station more than once
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/00567—Handling of original or reproduction media, e.g. cutting, separating, stacking
    • H04N1/0057—Conveying sheets before or after scanning
    • H04N1/00572—Conveying sheets before or after scanning with refeeding for double-sided scanning, e.g. using one scanning head for both sides of a sheet
    • H04N1/00575—Inverting the sheet prior to refeeding
    • H04N1/00578—Inverting the sheet prior to refeeding using at least part of a loop, e.g. using a return loop
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/00567—Handling of original or reproduction media, e.g. cutting, separating, stacking
    • H04N1/0057—Conveying sheets before or after scanning
    • H04N1/00572—Conveying sheets before or after scanning with refeeding for double-sided scanning, e.g. using one scanning head for both sides of a sheet
    • H04N1/00575—Inverting the sheet prior to refeeding
    • H04N1/0058—Inverting the sheet prior to refeeding using at least one dead-end path, e.g. using a sheet ejection path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/00567—Handling of original or reproduction media, e.g. cutting, separating, stacking
    • H04N1/0057—Conveying sheets before or after scanning
    • H04N1/00599—Using specific components
    • H04N1/00602—Feed rollers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/00567—Handling of original or reproduction media, e.g. cutting, separating, stacking
    • H04N1/0062—Removing sheets from a stack or inputting media
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/00567—Handling of original or reproduction media, e.g. cutting, separating, stacking
    • H04N1/00628—Separating, e.g. preventing feeding of two sheets at a time
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/00567—Handling of original or reproduction media, e.g. cutting, separating, stacking
    • H04N1/00631—Ejecting or stacking
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/00567—Handling of original or reproduction media, e.g. cutting, separating, stacking
    • H04N1/00641—Sorting, reordering or inverting

Definitions

  • the invention relates to a duplex automatic sheet feeder, and more particularly to a duplex automatic sheet feeder capable of effectively preventing an ultra-thin sheet from buckling in a sheet passageway.
  • an automatic sheet feeder In a conventional duplex scanner, an automatic sheet feeder usually has to turn a document thrice and transport the document through a scanning region thrice when the document is being scanned.
  • a front side of the document is scanned.
  • a backside of the document is scanned.
  • no scanning operation is carried out.
  • the third document transporting operation is, carried out in order to keep the same order of the documents.
  • branch passageways are formed on the document transporting path for the purpose of turning over the sheet smoothly.
  • an elastic Mylar has to be disposed at the branching portion.
  • the elastic Mylar may be pushed away by the sheet moving in a first direction, and guides the sheet, which is moving in a direction opposite to the first direction, to another branch passageway. In this case, when the sheet is too thin to have the sufficient rigidity, the sheet cannot push the elastic Mylar away and may buckle and be jammed in the passageway.
  • the invention provides a duplex automatic sheet feeder including a sheet input tray, a first passageway, a sheet feeding mechanism, a second passageway, a third passageway, a fourth passageway, a fifth passageway, a sheet output tray, a guiding mechanism, a sheet detector and a transporting mechanism.
  • the sheet input tray stores a plurality of sheets.
  • the first passageway is connected to the sheet input tray.
  • the sheet feeding mechanism feeds the sheets one by one to the first passageway.
  • the second passageway is connected to the first passageway and has an image processing region.
  • the third passageway is connected to the second passageway.
  • the fourth passageway is connected to the third passageway and the second passageway.
  • the fifth passageway is connected to the third passageway.
  • the sheet output tray is connected to the fifth passageway.
  • the guiding mechanism is located at a connection portion between the third passageway and the fifth passageway, and is for selectively guiding the sheet from the third passageway to the fifth passageway.
  • the sheet detector is located at the third passageway and is for detecting the sheet moving through the third passageway.
  • the transporting mechanism is for transporting the sheet from the first passageway to the sheet output tray sequentially through the second passageway, the third passageway, the fourth passageway, the second passageway, the third passageway and the fifth passageway.
  • FIG. 1 is a schematic illustration showing a duplex automatic sheet feeder according to a first embodiment of the invention
  • FIG. 2 is a schematic illustration showing a duplex automatic sheet feeder according to a second embodiment of the invention.
  • FIG. 3 is a schematic illustration showing a duplex automatic sheet feeder according to a third embodiment of the invention.
  • FIG. 4 is a schematic illustration showing a duplex automatic sheet feeder according to a fourth embodiment of the invention.
  • FIG. 1 is a schematic illustration showing a duplex automatic sheet feeder 1 according to a first embodiment of the invention.
  • the duplex automatic sheet feeder 1 of this embodiment includes a sheet input tray 10 , a first passageway 21 (from points A to B), a sheet feeding mechanism 30 , a second passageway 22 (from points B to C), a third passageway 23 (from points C to 23 A), a fourth passageway 24 (from points C to B), a fifth passageway 25 , a sheet output tray 40 , a guiding mechanism 50 , an elastic guide 52 , a sheet detector 60 and a transporting mechanism 70 .
  • the sheet input tray 10 stores a plurality of sheets S. In this embodiment, the uppermost sheet is first fed.
  • the first passageway 21 is connected to the sheet input tray 10 .
  • the sheet feeding mechanism 30 feeds the sheets S one by one to the first passageway 21 .
  • the sheet feeding mechanism 30 includes a pickup roller 31 and a separation roller set 32 .
  • the second passageway 22 is connected to the first passageway 21 and has an image processing region 22 A.
  • the image processing region 22 A is a scanning region, and a sheet (document or original) moving across this region is scanned by an optical module 90 .
  • the image processing region 22 A is a printing region, and a printing module prints data on a sheet moving across this region.
  • the third passageway 23 is connected to the second passageway 22 so that the sheet can enter the third passageway 23 from the second passageway 22 .
  • the fourth passageway 24 is connected to the third passageway 23 and the second passageway 22 , and the sheet coming from the third passageway 23 can enter the fourth passageway 24 but cannot enter the second passageway 22 .
  • the fifth passageway 25 is connected to the third passageway 23 so that the sheet coming from the third passageway 23 can enter the fifth passageway 25 .
  • the sheet output tray 40 is connected to the fifth passageway 25 and stores the sheets after being scanned.
  • the guiding mechanism 50 may swing and is located at a connection portion 26 between the third passageway 23 and the fifth passageway 25 to selectively guide the sheet S from the third passageway 23 to the fifth passageway 25 .
  • the elastic guide 52 guides the sheet S from the third passageway 23 to the fourth passageway 24 , prevents the sheet S coming from the third passageway 23 from entering the second passageway 22 , and allows the sheet S to enter the third passageway 23 from the second passageway 22 .
  • the sheet detector 60 located at the third passageway 23 is for detecting the sheet S moving through the third passageway 23 .
  • the sheet detector 60 may be a reflective or transmissive detector and outputs an infrared light ray, for example, to detect whether a leading edge or a trailing edge of the sheet has passed through a specific position to serve as a reference for feeding another sheet.
  • the transporting mechanism 70 includes a plurality of rollers 71 to 79 .
  • the transporting mechanism 70 transports the sheet S from the first passageway 21 to the duplex sheet output tray 40 sequentially through the second passageway 22 , the third passageway 23 , the fourth passageway 24 , the second passageway 22 , the third passageway 23 and the fifth passageway 25 .
  • the elastic guide 52 is slightly pushed away by the sheet, and the state of the guiding mechanism 50 is shown by the dashed line profile.
  • the state of the guiding mechanism 50 is shown by the dashed line profile, and the elastic guide 52 is in close contact with the connection portion 26 .
  • the elastic guide 52 can guide the sheet S from the third passageway 23 to the fourth passageway 24 .
  • the state of the guiding mechanism 50 is shown by the solid line profile.
  • the third passageway 23 is also connected to the sheet output tray 40 .
  • the transporting mechanism 70 may further transport the sheet S from the first passageway 21 to the sheet output tray 40 sequentially through the second passageway 22 and the third passageway 23 .
  • An outlet 23 A of the third passageway 23 is farther from the sheet output tray 40 than an outlet 25 A of the fifth passageway 25 .
  • FIG. 2 is a schematic illustration showing a duplex automatic sheet feeder according to a second embodiment of the invention.
  • the duplex automatic sheet feeder according to this embodiment further includes a simplex sheet output tray 80 , which is connected to the third passageway 23 , for transporting the sheet S from the first passageway 21 to the simplex sheet output tray 80 sequentially through the second passageway 22 and the third passageway 23 in a simplex mode.
  • the simplex sheet output tray 80 is located at a level higher than the sheet output tray 40 . Consequently, the user may identify whether the documents or sheets have been processed in a desired simplex or duplex manner according to the tray in which the documents or sheets are placed.
  • the elastic guide 52 may be replaced with a sub-guiding mechanism (not shown), which is similar to the guiding mechanism 50 and may swing, for guiding the sheet S from the third passageway 23 to the fourth passageway 24 and guiding the sheet S from the second passageway 22 to the third passageway 23 .
  • a sub-guiding mechanism (not shown), which is similar to the guiding mechanism 50 and may swing, for guiding the sheet S from the third passageway 23 to the fourth passageway 24 and guiding the sheet S from the second passageway 22 to the third passageway 23 .
  • the sub-guiding mechanism is similar to the guiding mechanism 50 and the position thereof is the same as that of the elastic guide 52 , the detailed arrangement thereof will be omitted.
  • the second sheet can be fed into the first passageway 21 after the second side of the first sheet is scanned and after the trailing edge of the first sheet is moved from the fourth passageway 24 and past the point B.
  • FIG. 3 is a schematic illustration showing a duplex automatic sheet feeder according to a third embodiment of the invention.
  • the duplex automatic sheet feeder 1 of this embodiment includes a sheet input tray 10 , a first passageway 21 (from points A to B), a sheet feeding mechanism 30 , a second passageway 22 (from points B to C), a third passageway 23 (from points C to 23 A), a fourth passageway 24 (from points C to B), a fifth passageway 25 , a duplex sheet output tray 40 , a guiding mechanism 50 , a sheet detector 60 and a transporting mechanism 70 .
  • the sheet input tray 10 stores a plurality of sheets S. In this embodiment, the uppermost sheet is first fed.
  • the first passageway 21 is connected to the sheet input tray 10 .
  • the sheet feeding mechanism 30 feeds the sheets S one by one to the first passageway 21 .
  • the sheet feeding mechanism 30 includes a pickup roller 31 and a separation roller set 32 .
  • the second passageway 22 is connected to the first passageway 21 and has an image processing region 22 A.
  • the image processing region 22 A is a scanning region, and a sheet (document or original) moving across this region is scanned by an optical module 90 .
  • the image processing region 22 A is a printing region, and a printing module prints data on a sheet moving across this region.
  • the third passageway 23 is connected to the second passageway 22 so that the sheet can enter the third passageway 23 from the second passageway 22 .
  • the fourth passageway 24 is connected to the third passageway 23 and the second passageway 22 , and the sheet coming from the third passageway 23 can enter the fourth passageway 24 but cannot enter the second passageway 22 .
  • the fifth passageway 25 is connected to the third passageway 23 so that the sheet coming from the third passageway 23 can enter the fifth passageway 25 .
  • the duplex sheet output tray 40 is connected to the fifth passageway 25 and stores the sheets after being scanned in a duplex manner.
  • the guiding mechanism 50 is located at a connection portion 26 between the third passageway 23 and the fifth passageway 25 to selectively guide the sheet S from the third passageway 23 to the fifth passageway 25 .
  • the sheet detector 60 located at the third passageway 23 is for detecting the sheet S moving through the third passageway 23 .
  • the sheet detector 60 may be a reflective or transmissive detector and outputs an infrared light ray, for example, to detect whether a leading edge or a trailing edge of the sheet has passed through a specific position to serve as a reference for feeding another sheet.
  • the transporting mechanism 70 includes a plurality of rollers 71 to 79 .
  • the transporting mechanism 70 transports the sheet S from the first passageway 21 to the duplex sheet output tray 40 sequentially through the second passageway 22 , the third passageway 23 , the fourth passageway 24 , the second passageway 22 , the third passageway 23 and the fifth passageway 25 .
  • the state of the guiding mechanism 50 is shown by the upper dashed line profile.
  • the guiding mechanism 50 may further guide the sheet S from the second passageway 22 to the third passageway 23 .
  • the state of the guiding mechanism 50 is shown by the lower dashed line profile.
  • the guiding mechanism 50 may guide the sheet S from the third passageway 23 to the fourth passageway 24 .
  • the state of the guiding mechanism 50 is shown by the solid line profile. It is to be noted that the guiding mechanism 50 may only have two states as indicated by the upper dashed line profile and the solid line profile, and the structure of the passageway may be properly designed to make the sheet enter the fourth passageway from the third passageway smoothly.
  • the third passageway 23 is also connected to the duplex sheet output tray 40 .
  • the transporting mechanism 70 may further transport the sheet S from the first passageway 21 to the duplex sheet output tray 40 sequentially through the second passageway 22 and the third passageway 23 .
  • An outlet 23 A of the third passageway 23 is farther from the duplex sheet output tray 40 than an outlet 25 A of the fifth passageway 25 .
  • FIG. 4 is a schematic illustration showing a duplex automatic sheet feeder according to a fourth embodiment of the invention.
  • the duplex automatic sheet feeder of this embodiment further includes a simplex sheet output tray 80 , which is connected to the third passageway 23 , for transporting the sheet S from the first passageway 21 to the simplex sheet output tray 80 sequentially through the second passageway 22 and the third passageway 23 in a simplex mode.
  • the simplex sheet output tray 80 is located at a level higher than the duplex sheet output tray 40 . Consequently, the user may identify whether the documents or sheets have been processed in a desired simplex or duplex manner according to the tray in which the documents or sheets are placed.
  • the guiding mechanism is provided to guide the moving direction of the sheet, so the thin sheet is free from the conventional buckling phenomenon.
  • two sheet output trays are provided so that the user can further identify whether the documents or sheets have been processed in a desired simplex or duplex manner.
  • the feeder of the invention may be used in a quite convenient and human-oriented manner.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Handling Of Cut Paper (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
US11/819,283 2006-07-04 2007-06-26 Duplex automatic sheet feeder Abandoned US20080169596A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TW095124228A TWI276541B (en) 2006-07-04 2006-07-04 Duplex automatic sheet feeder
TW095124228 2006-07-04

Publications (1)

Publication Number Publication Date
US20080169596A1 true US20080169596A1 (en) 2008-07-17

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Family Applications (1)

Application Number Title Priority Date Filing Date
US11/819,283 Abandoned US20080169596A1 (en) 2006-07-04 2007-06-26 Duplex automatic sheet feeder

Country Status (2)

Country Link
US (1) US20080169596A1 (zh)
TW (1) TWI276541B (zh)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080179822A1 (en) * 2007-01-26 2008-07-31 Primax Electronics Ltd. Duplex document reader
US20090279149A1 (en) * 2008-05-09 2009-11-12 Avision Inc. Scanner with Simplified Document Feeding Path
US20100001453A1 (en) * 2008-07-04 2010-01-07 Kazuhiro Mizude Document reader
US20100314822A1 (en) * 2009-06-16 2010-12-16 Kinpo Electronics, Inc. Paper-feeding device
US11724520B2 (en) 2021-04-01 2023-08-15 Avision Inc. Peripheral with pivotal turn-over guide mechanism

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6321064B1 (en) * 1998-12-02 2001-11-20 Konica Corporation Document feeding apparatus
US6393251B2 (en) * 2000-02-02 2002-05-21 Nisca Corporation Automatic document feeding device
US6970272B2 (en) * 2000-08-25 2005-11-29 Murata Kikai Kabushiki Kaisha Duplex automatic document feeder

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6321064B1 (en) * 1998-12-02 2001-11-20 Konica Corporation Document feeding apparatus
US6393251B2 (en) * 2000-02-02 2002-05-21 Nisca Corporation Automatic document feeding device
US6970272B2 (en) * 2000-08-25 2005-11-29 Murata Kikai Kabushiki Kaisha Duplex automatic document feeder

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080179822A1 (en) * 2007-01-26 2008-07-31 Primax Electronics Ltd. Duplex document reader
US7866653B2 (en) * 2007-01-26 2011-01-11 Primax Electronics Ltd. Duplex document reader
US20090279149A1 (en) * 2008-05-09 2009-11-12 Avision Inc. Scanner with Simplified Document Feeding Path
US8233202B2 (en) 2008-05-09 2012-07-31 Avision Inc. Scanner with simplified document feeding path
US20100001453A1 (en) * 2008-07-04 2010-01-07 Kazuhiro Mizude Document reader
US8366096B2 (en) * 2008-07-04 2013-02-05 Sharp Kabushiki Kaisha Document reader
US20100314822A1 (en) * 2009-06-16 2010-12-16 Kinpo Electronics, Inc. Paper-feeding device
US11724520B2 (en) 2021-04-01 2023-08-15 Avision Inc. Peripheral with pivotal turn-over guide mechanism

Also Published As

Publication number Publication date
TW200804089A (en) 2008-01-16
TWI276541B (en) 2007-03-21

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Legal Events

Date Code Title Description
AS Assignment

Owner name: AVISION INC., TAIWAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:WU, YUNG-CHUAN;REEL/FRAME:019531/0662

Effective date: 20070616

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION