Digital copying machine
US4271436A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 25, 1979 |
| Grant date | Jun 2, 1981 |
| Priority date | — |
| Expiry date | Apr 25, 1999 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/407
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A digital copying machine is provided with a scanner system, a data processing and transferring system, a plotter system, and a control system for controlling these system. The data processing and transferring system comprises means for converting the output of a density correcting control means provided on the control panel into digital data, and a ROM for employing as address data a value obtained by combining the digital data and a digitalized density value from the scanner system. Density values corrected in correspondence to the address data are stored in the ROM in advance to apply a density signal added by a degree of correction to the plotter system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.