Sheet stripper for an electrostatographic apparatus
US4183653A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 14, 1978 |
| Grant date | Jan 15, 1980 |
| Priority date | — |
| Expiry date | Jul 14, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S271/90
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The surface of an electrostatic drum (12) is charged and radiated with a light image of an original document (16) to form an electrostatic image which is developed to form a toner image. A copy sheet (18) is moved into engagement with the drum (12) and an electrostatic charge applied thereto to transfer the toner image to the copy sheet (18). A corona discharge unit (27) applies an alternating voltage to the leading edge of the copy sheet (18) to discharge the same and cause the leading edge to separate from the drum (12). Thereafter, the discharge unit (27) applies an asymmetrical alternating voltage which partially discharges the remaining portion of the copy sheet (18) but does not cause the same to separate from the drum (12).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.