Electrostatic copying apparatus
US4382674A · kind A · utility
15Cited by
9References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 3, 1981 |
| Grant date | May 10, 1983 |
| Priority date | — |
| Expiry date | Apr 3, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S271/901
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An electrostatic copying apparatus including detecting means for detecting the longitudinal size of the copying paper unit and a control means for operating the charging corona-discharge device only for a time period corresponding to the detected longitudinal size of the copying paper.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.