Two-color copying machine
US4661703A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 8, 1985 |
| Grant date | Apr 28, 1987 |
| Priority date | — |
| Expiry date | Aug 8, 2005 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/506
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A two-color copying machine records an image on a recording sheet in two colors such as red and black by using thermally transferable red and black inks on ink donor sheets. The two-color copying machine includes a platen for supporting an original to be copied, a scanner unit movable reciprocally with respect to the platen for reading the original and for generating an image signal for each line which is separated into two single color image signals, each corresponding to one of the two colors, a pair of thermal heads each for selectively generating thermal pulses in response to the image signal from the scanner unit, an ink donor sheet supply assembly for supplying the thermal heads with respective ink donor sheets coated with thermally transferable inks of different colors, respectively, which can be fluidized or sublimated upon being heated, a recording sheet supply assembly for supplying a recording sheet in the vicinity of the thermal heads, a recording sheet contacting assembly for bringing the supplied recording sheet into intimate contact with a heating region of each of the thermal heads with the ink donor sheet interposed between a thermal head and an ink donor sheet, a …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.