The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 04, 1989
Filed:
Aug. 12, 1987
Akihiko Someya, Yokohama, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
In one embodiment, a thermal-transfer type color copying machine produces a positive multi-color print on paper using a thermal transfer ink ribbon having yellow, magenta, cyan, and black ink portions by driving a thermal head in accordance with yellow, magenta, cyan, and black image signals obtained by scanning an original. The used ribbon, which now contains negative yellow, magenta, cyan, and black ink images, is rewound and the thermal head is driven at full power to produce yellow, magenta, cyan, and black negative color separation films on plastic film. At this point, all of the ink on the thermal transfer ink ribbon has been used, and no ink images remain on the ribbon. In another embodiment, yellow, magenta, cyan, and black positive color separation films are produced on plastic film instead of producing a positive multi-color print on paper. The positive and negative color separations may be produced as prints on paper if desired.