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JPS5623147A - Sheet clamper - Google Patents

Sheet clamper

Info

Publication number
JPS5623147A
JPS5623147A JP9822979A JP9822979A JPS5623147A JP S5623147 A JPS5623147 A JP S5623147A JP 9822979 A JP9822979 A JP 9822979A JP 9822979 A JP9822979 A JP 9822979A JP S5623147 A JPS5623147 A JP S5623147A
Authority
JP
Japan
Prior art keywords
sheet
drum
suction holes
size
sucked
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.)
Pending
Application number
JP9822979A
Other languages
Japanese (ja)
Inventor
Toshibumi Kato
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.)
Ricoh Co Ltd
Original Assignee
Ricoh Co Ltd
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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP9822979A priority Critical patent/JPS5623147A/en
Publication of JPS5623147A publication Critical patent/JPS5623147A/en
Pending legal-status Critical Current

Links

Landscapes

  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)

Abstract

PURPOSE: To enable the use of a compact suction pump, by selectively operating passage open/close means depending on the size of the sheet to open or close air passages which connect a negative pressure unit to some of numerous suction holes provided in a drum for sucking the sheet.
CONSTITUTION: When the sheet of large size (B4) is wound around the surface of the drum 2, a cover 25 provided inside the drum is located in a position A and a negative pressure generator 23 containing a fan and a motor is driven. When the drum 2 is rotated and the sheet S is sent out in the direction of an arrow in the figure, the front end of the sheet is sucked on a row of suction holes A. After that, the sheet S is sucked on groups of suction holes B1, B2..., B12, C, D, E in that order according as the drum 2 is rotated. When a sheet of small size (A4) is wound, the cover 25 is displaced by 1/2P through a control means and a projection 25A and some of the suction holes 21 are shut off depending on the size of the sheet.
COPYRIGHT: (C)1981,JPO&Japio
JP9822979A 1979-07-31 1979-07-31 Sheet clamper Pending JPS5623147A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9822979A JPS5623147A (en) 1979-07-31 1979-07-31 Sheet clamper

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9822979A JPS5623147A (en) 1979-07-31 1979-07-31 Sheet clamper

Publications (1)

Publication Number Publication Date
JPS5623147A true JPS5623147A (en) 1981-03-04

Family

ID=14214122

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9822979A Pending JPS5623147A (en) 1979-07-31 1979-07-31 Sheet clamper

Country Status (1)

Country Link
JP (1) JPS5623147A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5037079A (en) * 1990-03-02 1991-08-06 Xerox Corporation Vacuum platen transport plenum vacuum shutter
US5173997A (en) * 1991-01-17 1992-12-29 Takata Corporation Tongue plate stopper
US6460991B1 (en) * 1997-09-04 2002-10-08 Xaar Technology Limited Vacuum drums for printing, and duplex printers
US6676787B2 (en) * 2001-09-14 2004-01-13 The Goodyear Tire & Rubber Company False drum with a variable area vacuum-surface
JP2010126269A (en) * 2008-11-26 2010-06-10 Duplo Seiko Corp Printing device

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5037079A (en) * 1990-03-02 1991-08-06 Xerox Corporation Vacuum platen transport plenum vacuum shutter
US5173997A (en) * 1991-01-17 1992-12-29 Takata Corporation Tongue plate stopper
US6460991B1 (en) * 1997-09-04 2002-10-08 Xaar Technology Limited Vacuum drums for printing, and duplex printers
US6682191B2 (en) 1997-09-04 2004-01-27 Xaar Technology Limited Vacuum drums for printing, and duplex printers
US6676787B2 (en) * 2001-09-14 2004-01-13 The Goodyear Tire & Rubber Company False drum with a variable area vacuum-surface
EP1310350A3 (en) * 2001-09-14 2004-07-28 The Goodyear Tire & Rubber Company False drum with a variable area vacuum-surface
US7037404B2 (en) 2001-09-14 2006-05-02 The Goodyear Tire & Rubber Company False drum with a variable area vacuum-surface
JP2010126269A (en) * 2008-11-26 2010-06-10 Duplo Seiko Corp Printing device

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