Devices for the copying of images by sequential sweeping
US4001495A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 19, 1975 |
| Grant date | Jan 4, 1977 |
| Priority date | — |
| Expiry date | Jun 19, 1995 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41C1/141
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An optical assembly for a stencil making device employed for scanning an original document to provide a light image of indicia thereon to a photomultiplier tube which converts the light image into electrical signals includes a housing taking the form of a block having at least one aperture or channel therein for receiving a lamp. A second channel extends at right angles from the first channel toward a predetermined wall of the block. The last-mentioned channel opens at the wall so that light from the lamp passes outwardly of the second channel onto the original document positioned adjacent the wall. A third channel extends into the block adjacent the second channel. A lens in the last-mentioned channel focuses reflected light images of the indicia through the third channel to the end of an optical fiber which carries the image to the photomultiplier tube. The dimension of the cross-sectional end of the optical fiber determines the scan area.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.