Duplex copying machine
US4218128A · kind A · utility
46Cited by
8References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 10, 1978 |
| Grant date | Aug 19, 1980 |
| Priority date | — |
| Expiry date | Jan 10, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/00358
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A duplex copying machine has an auto document feeder and is capable of duplex copying from originals having images on one side, originals having images on both sides and combinations of the aforementioned two types. In a preferred embodiment of the duplex copying machine, whether an original has images on one side only or on both sides is detected so as to obtain a duplex copy from a duplex original and a one-side copy from a one-side original.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.