EP2128061A1 - Stapler for printing systems - Google Patents

Stapler for printing systems Download PDF

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Publication number
EP2128061A1
EP2128061A1 EP08157185A EP08157185A EP2128061A1 EP 2128061 A1 EP2128061 A1 EP 2128061A1 EP 08157185 A EP08157185 A EP 08157185A EP 08157185 A EP08157185 A EP 08157185A EP 2128061 A1 EP2128061 A1 EP 2128061A1
Authority
EP
European Patent Office
Prior art keywords
sheet
sheets
nip
subsequent
feeding
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.)
Withdrawn
Application number
EP08157185A
Other languages
German (de)
French (fr)
Inventor
designation of the inventor has not yet been filed The
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.)
Canon Production Printing Netherlands BV
Original Assignee
Oce Technologies BV
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 Oce Technologies BV filed Critical Oce Technologies BV
Priority to EP08157185A priority Critical patent/EP2128061A1/en
Publication of EP2128061A1 publication Critical patent/EP2128061A1/en
Withdrawn legal-status Critical Current

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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
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/66—Advancing articles in overlapping streams
    • B65H29/6609—Advancing articles in overlapping streams forming an overlapping stream
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/12—Delivering or advancing articles from machines; Advancing articles to or into piles by means of the nip between two, or between two sets of, moving tapes or bands or rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2220/00—Function indicators
    • B65H2220/09—Function indicators indicating that several of an entity are present
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/10—Rollers
    • B65H2404/14—Roller pairs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/10—Rollers
    • B65H2404/14—Roller pairs
    • B65H2404/144—Roller pairs with relative movement of the rollers to / from each other
    • B65H2404/1441—Roller pairs with relative movement of the rollers to / from each other involving controlled actuator
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2801/00—Application field
    • B65H2801/03—Image reproduction devices
    • B65H2801/06—Office-type machines, e.g. photocopiers

Definitions

  • stapling finishers such as known e.g. in printing systems
  • sheets can be collected to buffer sheets to keep productivity while stapling.
  • a stapling action takes some time to perform and it is preferred that the print engine is not obliged to slowdown to compensate for this stapling time.
  • Printing systems may be e.g. inkjet based, hot melt based, toner based or a sheet processing apparatus where no marking material is applied.
  • a known method of buffering works by stopping the first sheet in a nip and letting a second sheet slide over the first sheet in a second nip as displayed in figure 1 .
  • the first sheet is fed and stopped by nip 2.
  • the second sheet is fed and collated with sheet 1. After some time the two sheets are transported together.
  • the friction between rollers and sheets needs to be sufficiently larger than the inter-sheet friction. If this is not the case, then the resulting alignment between sheets in undefined. Furthermore the principle causes smearing of toner on the sheets.
  • the first sheet is fed (A) and stopped in nip 2. Then a second sheet is fed (B). When the second sheet reaches nip 1, both nips are activated and the sheets are transported together, with overlap (C). Now the sheets can possibly be stopped, for example to wait for another action to finish (D). Finally the sheets can be transported together (E), after which they may need to be realigned.
  • Embodiment B is much like embodiment A, but in this alternative embodiment, nip 1 is never stopped but is opened, e.g. by a voice coil or any other way for opening the nip.
  • the first sheet is fed (1) and stopped in nip 2.
  • Nip 1 is opened, then a second sheet is fed (2).
  • nip1 is closed and nip 2 is activated (3).
  • the sheets are transported together, with overlap. Now the sheets can possibly be stopped, for example to wait for another action to finish (4). While stopped, nip 1 is opened again. Finally the sheets can be transported together (5), after which they may need to be realigned.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)

Abstract

Apparatus and method and apparatus for inline buffering of sheets in a sheet processing apparatus, comprising the steps of feeding a first sheet into a transport nip, feeding a subsequent sheet overlapping onto the first sheet while the transport nip is engaged with the first sheet, such that the relative velocity of the subsequent sheet with respect to the first sheet is substantially zero such that scraping of the subsequent sheet over the first sheet is minimized.

Description

  • In stapling finishers such as known e.g. in printing systems, sheets can be collected to buffer sheets to keep productivity while stapling. A stapling action takes some time to perform and it is preferred that the print engine is not obliged to slowdown to compensate for this stapling time. It will be clear from the following that although the invention is described with a stapler, the invention can be applied in any printing system where sheets are to be buffered for some time, such as printing systems configured to perform stapling, binding, punching, gluing or the like finishing operations. Printing systems may be e.g. inkjet based, hot melt based, toner based or a sheet processing apparatus where no marking material is applied.
  • A known method of buffering works by stopping the first sheet in a nip and letting a second sheet slide over the first sheet in a second nip as displayed in figure 1. The first sheet is fed and stopped by nip 2. Then the second sheet is fed and collated with sheet 1. After some time the two sheets are transported together.
  • For this to work, the friction between rollers and sheets needs to be sufficiently larger than the inter-sheet friction. If this is not the case, then the resulting alignment between sheets in undefined. Furthermore the principle causes smearing of toner on the sheets.
  • Two alternative solutions are hereinafter described
    • Embodiment A
  • As soon as the second sheet reaches nip 1 the transport both sheets together as displayed in figure 2. In this method slip between the sheets is prevented by allowing an overlap of the sheets after collecting. The steps are shown in figure 2.
  • The first sheet is fed (A) and stopped in nip 2. Then a second sheet is fed (B). When the second sheet reaches nip 1, both nips are activated and the sheets are transported together, with overlap (C). Now the sheets can possibly be stopped, for example to wait for another action to finish (D). Finally the sheets can be transported together (E), after which they may need to be realigned.
    • Embodiment B
  • A variation on this in displayed in figure 3 where nip 1 is opened while the first sheet is laying still and closed again to transport the two sheets together Embodiment B is much like embodiment A, but in this alternative embodiment, nip 1 is never stopped but is opened, e.g. by a voice coil or any other way for opening the nip.
  • The first sheet is fed (1) and stopped in nip 2. Nip 1 is opened, then a second sheet is fed (2). When the second sheet has passed nip 1, but has not yet reached nip2, nip1 is closed and nip 2 is activated (3). The sheets are transported together, with overlap. Now the sheets can possibly be stopped, for example to wait for another action to finish (4). While stopped, nip 1 is opened again. Finally the sheets can be transported together (5), after which they may need to be realigned.

Claims (3)

  1. Method for inline buffering of sheets in a sheet processing apparatus, comprising the steps of
    - feeding a first sheet into a transport nip
    - feeding a subsequent sheet overlapping onto the first sheet while the transport nip is engaged with the first sheet, such that the relative velocity of the subsequent sheet with respect to the first sheet is substantially zero such that scraping of the subsequent sheet over the first sheet is minimized.
  2. Method as described here above and shown in figures 2 or 3.
  3. Apparatus configured to perform the method according to any one of claims 1 or 2.
EP08157185A 2008-05-29 2008-05-29 Stapler for printing systems Withdrawn EP2128061A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP08157185A EP2128061A1 (en) 2008-05-29 2008-05-29 Stapler for printing systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08157185A EP2128061A1 (en) 2008-05-29 2008-05-29 Stapler for printing systems

Publications (1)

Publication Number Publication Date
EP2128061A1 true EP2128061A1 (en) 2009-12-02

Family

ID=39870108

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08157185A Withdrawn EP2128061A1 (en) 2008-05-29 2008-05-29 Stapler for printing systems

Country Status (1)

Country Link
EP (1) EP2128061A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013051291A1 (en) * 2011-10-06 2013-04-11 Canon Kabushiki Kaisha Sheet processing apparatus and image forming apparatus

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1195339A2 (en) * 2000-10-06 2002-04-10 Longford Equipment International Limited Batch sheet feeder
EP1431049A1 (en) * 2002-12-17 2004-06-23 Pitney Bowes Inc. Method and system for high velocity document processing system using lower velocity print technology
EP1577242A1 (en) * 2004-03-18 2005-09-21 Pitney Bowes Inc. System and method for providing sheets to an inserter system using a high speed cutter and right angle turn
GB2417947A (en) * 2004-09-09 2006-03-15 Pitney Bowes Ltd Sheet feed stopping device
US20080073837A1 (en) * 2006-09-27 2008-03-27 Xerox Corporation Sheet buffering system
EP1972583A2 (en) * 2007-03-21 2008-09-24 Xerox Corporation High speed shingled sheets compiler

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1195339A2 (en) * 2000-10-06 2002-04-10 Longford Equipment International Limited Batch sheet feeder
EP1431049A1 (en) * 2002-12-17 2004-06-23 Pitney Bowes Inc. Method and system for high velocity document processing system using lower velocity print technology
EP1577242A1 (en) * 2004-03-18 2005-09-21 Pitney Bowes Inc. System and method for providing sheets to an inserter system using a high speed cutter and right angle turn
GB2417947A (en) * 2004-09-09 2006-03-15 Pitney Bowes Ltd Sheet feed stopping device
US20080073837A1 (en) * 2006-09-27 2008-03-27 Xerox Corporation Sheet buffering system
EP1972583A2 (en) * 2007-03-21 2008-09-24 Xerox Corporation High speed shingled sheets compiler

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013051291A1 (en) * 2011-10-06 2013-04-11 Canon Kabushiki Kaisha Sheet processing apparatus and image forming apparatus
US9309075B2 (en) 2011-10-06 2016-04-12 Canon Kabushiki Kaisha Sheet processing apparatus and image forming apparatus

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