JPS54118840A - Separating miss detector of copying machines - Google Patents
Separating miss detector of copying machinesInfo
- Publication number
- JPS54118840A JPS54118840A JP2575578A JP2575578A JPS54118840A JP S54118840 A JPS54118840 A JP S54118840A JP 2575578 A JP2575578 A JP 2575578A JP 2575578 A JP2575578 A JP 2575578A JP S54118840 A JPS54118840 A JP S54118840A
- Authority
- JP
- Japan
- Prior art keywords
- transfer paper
- surface potential
- transfer
- point
- separation
- 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
Landscapes
- Control Or Security For Electrophotography (AREA)
- Controlling Sheets Or Webs (AREA)
- Paper Feeding For Electrophotography (AREA)
Abstract
PURPOSE: To surely detect separation miss irrespective of the kinds of transfer paper by providing a surface potential meter to a transfer paper holding means or the conveying path of transfer paper.
CONSTITUTION: A surface potential meter 17 is provided at the point A near a photosensitive drum 19 or in the position B of the path 14 for transfer paper. Then, exposure is accomplished by an exposure device 12 after the photosensitive drum 10 has been charged with a charger 11 and the latent images formed are developed by a developing device 13 and at the time when they are transferred to transfer paper by a transfer device 15, the detection potential of the surface potential meter 17 at the point A has changed before and after the potential and from this change the failure in the separation of the transfer paper is judged, and from the fact that the detection potential of the surface potential meter 17 at the point B does not change despite elapsing of a constant time after the transfer, the separation miss is judged.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2575578A JPS54118840A (en) | 1978-03-07 | 1978-03-07 | Separating miss detector of copying machines |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2575578A JPS54118840A (en) | 1978-03-07 | 1978-03-07 | Separating miss detector of copying machines |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54118840A true JPS54118840A (en) | 1979-09-14 |
Family
ID=12174641
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2575578A Pending JPS54118840A (en) | 1978-03-07 | 1978-03-07 | Separating miss detector of copying machines |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54118840A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02169442A (en) * | 1988-12-21 | 1990-06-29 | Fujitsu Ltd | Electrophotographic device |
-
1978
- 1978-03-07 JP JP2575578A patent/JPS54118840A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02169442A (en) * | 1988-12-21 | 1990-06-29 | Fujitsu Ltd | Electrophotographic device |
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