Continuously variable reduction copier optics systems
US4209248A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 10, 1978 |
| Grant date | Jun 24, 1980 |
| Priority date | — |
| Expiry date | May 10, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/041
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A continuously variable reduction optical system for document copiers including various embodiments. A scanning optical system embodiment is disclosed for corner referenced documents. Full-exposure optical system embodiments are disclosed for both single-edge referenced and corner referenced documents. The systems can make use of single focus lens or variable focus lens. Specific mechanisms are disclosed for continuously variable adjustments to magnification, to total conjugate length, to image position, to scan speed and scan length and to leading edge registration. All adjustments are tied together under the control of the machine operator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.