Electrostatic copying apparatus
US4714338A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 20, 1986 |
| Grant date | Dec 22, 1987 |
| Priority date | — |
| Expiry date | Jun 20, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2221/169
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An electrostatic copying apparatus includes a lower supporting frame, an upper supporting frame mounted on the lower supporting frame for pivotal movement between an open position and a closed position, a document placing assembly having a transparent plate for placing a document to be copied thereon, an optical unit and a driving source. Either the document placing assembly or at least a part of the optical unit is mounted reciprocally on the upper supporting frame and drivingly coupled to the driving source via a power transmission mechanism. The apparatus further includes an automatic locking device for automatically locking the document placing assembly or at least a part of the optical unit and cancelling the locking according to an operation of moving the upper supporting frame to an open or closed position or an operation incident to this moving operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.