JPS55146461A - Developing apparatus - Google Patents

Developing apparatus

Info

Publication number
JPS55146461A
JPS55146461A JP5395279A JP5395279A JPS55146461A JP S55146461 A JPS55146461 A JP S55146461A JP 5395279 A JP5395279 A JP 5395279A JP 5395279 A JP5395279 A JP 5395279A JP S55146461 A JPS55146461 A JP S55146461A
Authority
JP
Japan
Prior art keywords
toner
roller
developing
developing apparatus
participating
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
JP5395279A
Other languages
Japanese (ja)
Inventor
Kazuo Isaka
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 Inc
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 JP5395279A priority Critical patent/JPS55146461A/en
Publication of JPS55146461A publication Critical patent/JPS55146461A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To prevent an unnecessary toner from remaining on a toner providing roller in an electrophotographic copier capable of using plural sized of transfer paper, by removing a developer not participating in developing on the toner providing roller in a developing apparatus using an electroconductive roller.
CONSTITUTION: Selective supply of currents to rollers 19aW19c of conductive roller 19 in accordance with the width of transfer papers A, B,... removes the toner of toner layer 14 attached to the rotary sleeve of toner providing roller 13 in the developing apparatus. As a result, the toner not participating in development does not remain unnecessarily for a long time length on the sleeve of roller 13, permitting deterioration of the toner to be prevented and stable image density to be obtained by developing.
COPYRIGHT: (C)1980,JPO&Japio
JP5395279A 1979-05-01 1979-05-01 Developing apparatus Pending JPS55146461A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5395279A JPS55146461A (en) 1979-05-01 1979-05-01 Developing apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5395279A JPS55146461A (en) 1979-05-01 1979-05-01 Developing apparatus

Publications (1)

Publication Number Publication Date
JPS55146461A true JPS55146461A (en) 1980-11-14

Family

ID=12957047

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5395279A Pending JPS55146461A (en) 1979-05-01 1979-05-01 Developing apparatus

Country Status (1)

Country Link
JP (1) JPS55146461A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0615515A (en) * 1990-03-16 1994-01-25 Heinrich Heule Trimming tool with sloping blade

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0615515A (en) * 1990-03-16 1994-01-25 Heinrich Heule Trimming tool with sloping blade

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