Reader-printer apparatus with multiple supply rolls and charging devices
US3992089A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 10, 1975 |
| Grant date | Nov 16, 1976 |
| Priority date | — |
| Expiry date | Oct 10, 1995 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/26
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The apparatus comprises a projection optical system and a copying system. The projection optical system can project an image of an original either onto a screen or to an exposing position of the copying system by switching between two positions. The copying system comprises a plurality of chargers providing different charging conditions in accordance with the types and sizes of copy sheets, by utilizing a change-over switch. A plurality of switches adapted for use with copy sheets of different lengths are arranged along the path of movement of a sheet of paper and, when the switch corresponding to the particular length of copy sheet desired is actuated, the movement of the sheet of paper is stopped, so that the central portion of the copy sheet can be brought into alignment with the optical axis for exposing at all times regardless of the difference in the length of copy sheets. Apparatus can interchangeably mount either a pressing plate assembly for manually feeding one original after another or an automatic feed device which can automatically feed one by one a plurality of originals to the exposing position of the copying system and to eject the same therefrom. By switching betwe…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.