JPH04353877A - Image forming device - Google Patents

Image forming device

Info

Publication number
JPH04353877A
JPH04353877A JP15581391A JP15581391A JPH04353877A JP H04353877 A JPH04353877 A JP H04353877A JP 15581391 A JP15581391 A JP 15581391A JP 15581391 A JP15581391 A JP 15581391A JP H04353877 A JPH04353877 A JP H04353877A
Authority
JP
Japan
Prior art keywords
roller
drum
nip part
toner
impressed
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
JP15581391A
Inventor
Kenji Matsuda
Hiroaki Miyake
Yoshiya Nomura
Shinichi Sasaki
Minoru Sato
Kazuo Shishido
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 JP15581391A priority Critical patent/JPH04353877A/en
Publication of JPH04353877A publication Critical patent/JPH04353877A/en
Application status is Pending legal-status Critical

Links

Abstract

PURPOSE: To disuse a cleaning blade, to improve assembling performance and to prevent a fault in forming an image from occurring.
CONSTITUTION: In the case that bias voltage 2a is impressed on an electrostatic charging roller 2, the roller 2 rotates in a forward direction (a) with respect to a photosensitive drum 1 to uniformly electrostatically charge the drum 1, and residual toner on the drum 1 is chipped off into a discharged toner container 7a by a nip part between the roller 2 and the drum 1. A part of toner which passes through the nip part adheres to the roller 2 and is scraped by a scraper 13. In a non-electrostatic charging state that the bias voltage is not impressed on the roller 2, the roller 2 rotates in an opposite direction (b), and the residual toner accumulated in the nip part is discharged.
COPYRIGHT: (C)1992,JPO&Japio
JP15581391A 1991-05-30 1991-05-30 Image forming device Pending JPH04353877A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15581391A JPH04353877A (en) 1991-05-30 1991-05-30 Image forming device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15581391A JPH04353877A (en) 1991-05-30 1991-05-30 Image forming device

Publications (1)

Publication Number Publication Date
JPH04353877A true JPH04353877A (en) 1992-12-08

Family

ID=15614037

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15581391A Pending JPH04353877A (en) 1991-05-30 1991-05-30 Image forming device

Country Status (1)

Country Link
JP (1) JPH04353877A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0629928A2 (en) * 1993-05-31 1994-12-21 Ricoh Company, Ltd Roller charging apparatus and image forming apparatus using the same
US6987944B2 (en) 2001-03-28 2006-01-17 Ricoh Company, Ltd. Cleaning device and image forming apparatus using the cleaning device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0629928A2 (en) * 1993-05-31 1994-12-21 Ricoh Company, Ltd Roller charging apparatus and image forming apparatus using the same
EP0629928A3 (en) * 1993-05-31 1998-07-29 Ricoh Company, Ltd Roller charging apparatus and image forming apparatus using the same
US6987944B2 (en) 2001-03-28 2006-01-17 Ricoh Company, Ltd. Cleaning device and image forming apparatus using the cleaning device

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