Adjustable print size control for raster output scanners
US4807156A · kind A · utility
17Cited by
10References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 23, 1987 |
| Grant date | Feb 21, 1989 |
| Priority date | — |
| Expiry date | Mar 23, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/04791
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Adjustable image print magnification system for a printer of the type using a raster output scanner having a rotating scanning polygon, a pixel clock providing clock signals for clocking pixels from an image signal source to the scanner, a polygon clock for controlling the rotating speed of the polygon, a first cycle stealing circuit for reducing the scanner pixel and polygon clocks together to control image length, and a second cycle stealing circuit for reducing the pixel clock only to control image width.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.