JPS56138763A - Transfer roller used for electrophotographic apparatus - Google Patents
Transfer roller used for electrophotographic apparatusInfo
- Publication number
- JPS56138763A JPS56138763A JP4115880A JP4115880A JPS56138763A JP S56138763 A JPS56138763 A JP S56138763A JP 4115880 A JP4115880 A JP 4115880A JP 4115880 A JP4115880 A JP 4115880A JP S56138763 A JPS56138763 A JP S56138763A
- Authority
- JP
- Japan
- Prior art keywords
- resistance value
- roller shaft
- transfer
- conductive
- deposited
- 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
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/14—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base
- G03G15/16—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern, e.g. magnetic transfer
- G03G15/1665—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern, e.g. magnetic transfer by introducing the second base in the nip formed by the recording member and at least one transfer member, e.g. in combination with bias or heat
- G03G15/167—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern, e.g. magnetic transfer by introducing the second base in the nip formed by the recording member and at least one transfer member, e.g. in combination with bias or heat at least one of the recording member or the transfer member being rotatable during the transfer
- G03G15/1685—Structure, details of the transfer member, e.g. chemical composition
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
Abstract
PURPOSE:To enable copiers of good image quality to be obtained at high speed by providing a conductive roller shaft which is connected to a transfer bias power source and is used to impress prescribed transfer bias voltage across the same and a latent image change holding body, and a conductive elastic member deposited on the outside circumference of said roller shaft. CONSTITUTION:A transfer roller 20 consists of a conductive elastic member 22 deposited on the outside circumference of a conductive roller shaft 21 of a uniform diameter. The resistance value of the composition of the member 22 is made successively higher stepwise from the central part 22A toward the end face part 22B and 22C. The axial length is made rougly equal to or slightly shorter than the length of a photoreceptor 4 which is a latent image charge holding body; also, the edge 23 of the end part 22C is beveled. Good results will be obtained if the resistance value of the end part 22C is set at 3-10 times the resistance value in the central part 22A. Thereby, the occurrence of uneven transfer is eliminated.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4115880A JPS56138763A (en) | 1980-04-01 | 1980-04-01 | Transfer roller used for electrophotographic apparatus |
US06/248,279 US4379630A (en) | 1980-04-01 | 1981-03-27 | Transfer roller for electrophotographic apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4115880A JPS56138763A (en) | 1980-04-01 | 1980-04-01 | Transfer roller used for electrophotographic apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS56138763A true JPS56138763A (en) | 1981-10-29 |
Family
ID=12600604
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4115880A Pending JPS56138763A (en) | 1980-04-01 | 1980-04-01 | Transfer roller used for electrophotographic apparatus |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56138763A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05142955A (en) * | 1991-05-10 | 1993-06-11 | Hitachi Ltd | Electrophotographic recorder |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54151054A (en) * | 1978-05-18 | 1979-11-27 | Seiko Epson Corp | Liquid crystal display panel |
-
1980
- 1980-04-01 JP JP4115880A patent/JPS56138763A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54151054A (en) * | 1978-05-18 | 1979-11-27 | Seiko Epson Corp | Liquid crystal display panel |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05142955A (en) * | 1991-05-10 | 1993-06-11 | Hitachi Ltd | Electrophotographic recorder |
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