Power feed control device for copying apparatus
US4260904A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 12, 1979 |
| Grant date | Apr 7, 1981 |
| Priority date | — |
| Expiry date | Sep 12, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/70
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A power feed control device for copying apparatus which merely requires closing of door or cover to set the apparatus to a power feedable condition after removal of jammed copying paper is disclosed. The device comprises a change-over switch responsive to opening and closing of the door to form normally opened contact and normally closed contact, said change-over switch is so arranged to be connected to a power source and also to a drive circuit as well as to a jam detecting circuit through the normally closed contact while the same is also connectable to a power feed control relay through the normally opened contact. The change-over switch being so connected that the opening of door will cut off the supply of power to said drive and said jam detection circuits whereas the closing of the door will automatically set the power feedable condition for said drive and jam detection circuits so as to enable the apparatus to resume copying operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.