JPH02272590A - Image forming device - Google Patents

Image forming device

Info

Publication number
JPH02272590A
JPH02272590A JP9293789A JP9293789A JPH02272590A JP H02272590 A JPH02272590 A JP H02272590A JP 9293789 A JP9293789 A JP 9293789A JP 9293789 A JP9293789 A JP 9293789A JP H02272590 A JPH02272590 A JP H02272590A
Authority
JP
Japan
Prior art keywords
transfer
width
cassette
detecting
bias
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
JP9293789A
Other languages
Japanese (ja)
Inventor
Hiroto Hasegawa
Yasumasa Otsuka
Akihiko Takeuchi
Koichi Tanigawa
Takayasu Yunamochi
Original Assignee
Canon 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 Canon Inc filed Critical Canon Inc
Priority to JP9293789A priority Critical patent/JPH02272590A/en
Publication of JPH02272590A publication Critical patent/JPH02272590A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To keep the charge quantity per unit area of a transfer material constant irrespective of width of the transfer material and to stably execute a satisfactory transfer by providing a means for varying a transfer current by a bias applied to a transfer means in accordance with width of the transfer material.
CONSTITUTION: When a transfer material of a specific size is contained, and a freely attachable and detachable cassette 5 is positioned in a fixed position in a device body, a cassette detecting part 6 for detecting it is provided. In this case, when a cassette, accordingly, width of the transfer material to be used is detected, an output signal of the cassette detecting part 6 is received, and by controlling a transfer power source 7 by a CPU 9, a current value is varied. That is, by setting a current value of an applied bias in accordance with width of the transfer material, even in any transfer material, the charge quantity per its unit area is kept constant and an appropriate transfer can be executed.
COPYRIGHT: (C)1990,JPO&Japio
JP9293789A 1989-04-14 1989-04-14 Image forming device Pending JPH02272590A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9293789A JPH02272590A (en) 1989-04-14 1989-04-14 Image forming device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9293789A JPH02272590A (en) 1989-04-14 1989-04-14 Image forming device

Publications (1)

Publication Number Publication Date
JPH02272590A true JPH02272590A (en) 1990-11-07

Family

ID=14068393

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9293789A Pending JPH02272590A (en) 1989-04-14 1989-04-14 Image forming device

Country Status (1)

Country Link
JP (1) JPH02272590A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5596391A (en) * 1994-09-21 1997-01-21 Minolta Co., Ltd. Image forming apparatus having transfer constant current source adjustable in response to the thickness of dielectric layer
US5717981A (en) * 1995-08-28 1998-02-10 Ricoh Company Ltd. Developing device for electrophotographic image forming apparatus
JPH10301408A (en) * 1997-04-30 1998-11-13 Fuji Xerox Co Ltd Transfer method
US6650861B2 (en) 2000-12-28 2003-11-18 Brother Kogyo Kabushiki Kaisha Electrophotographic image forming apparatus
US6792219B2 (en) 2002-03-28 2004-09-14 Brother Kogyo Kabushiki Kaisha Transfer control for an image forming apparatus
JP2006259086A (en) * 2005-03-16 2006-09-28 Ricoh Co Ltd Image forming apparatus
JP2009063645A (en) * 2007-09-04 2009-03-26 Ricoh Co Ltd Electrophotographic apparatus
JP2014066919A (en) * 2012-09-26 2014-04-17 Oki Data Corp Image forming apparatus

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5635159A (en) * 1979-08-30 1981-04-07 Olympus Optical Co Ltd Bias roller transfer device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5635159A (en) * 1979-08-30 1981-04-07 Olympus Optical Co Ltd Bias roller transfer device

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5596391A (en) * 1994-09-21 1997-01-21 Minolta Co., Ltd. Image forming apparatus having transfer constant current source adjustable in response to the thickness of dielectric layer
US5717981A (en) * 1995-08-28 1998-02-10 Ricoh Company Ltd. Developing device for electrophotographic image forming apparatus
JPH10301408A (en) * 1997-04-30 1998-11-13 Fuji Xerox Co Ltd Transfer method
US6650861B2 (en) 2000-12-28 2003-11-18 Brother Kogyo Kabushiki Kaisha Electrophotographic image forming apparatus
CN100350333C (en) * 2000-12-28 2007-11-21 兄弟工业株式会社 Image forming equipment
US6792219B2 (en) 2002-03-28 2004-09-14 Brother Kogyo Kabushiki Kaisha Transfer control for an image forming apparatus
JP2006259086A (en) * 2005-03-16 2006-09-28 Ricoh Co Ltd Image forming apparatus
JP2009063645A (en) * 2007-09-04 2009-03-26 Ricoh Co Ltd Electrophotographic apparatus
JP2014066919A (en) * 2012-09-26 2014-04-17 Oki Data Corp Image forming apparatus

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