JPS55146461A - Developing apparatus - Google Patents
Developing apparatusInfo
- 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
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
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0615515A (en) * | 1990-03-16 | 1994-01-25 | Heinrich Heule | Trimming tool with sloping blade |
-
1979
- 1979-05-01 JP JP5395279A patent/JPS55146461A/en active Pending
Cited By (1)
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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