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:
Aug. 01, 1989
Filed:
Aug. 11, 1988
Toshiyuki Kawanishi, Numazu, JP;
Yukio Tabata, Shizuoka, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A non-impact electrothermic recording method using an ink sheet comprising at least an electroconductive base layer, an electroconductive thin layer and an electroconductive image transfer ink layer, with the effective resistance of the ink sheet being in the range of from 50.OMEGA. to 20 K.OMEGA., is disclosed which is carried out by superimposing the ink sheet on a recording medium and applying between an recording electrode and a return electrode situated in contact with the ink sheet (i) image-delineating voltage signals with a fixed application time, with the voltage of the image-delineating signals changed in accordance with the image density of images to be reproduced on the recording medium, or (ii) image-delineating voltage signals with a fixed voltage, with the application time changed in accordance with the image density of images to be reproduced on the recording medium, so as to generate Joule's heat in the portions in the ink sheet immediately below the recording electrode; and transferring the electroconductive thermal-transferable ink material from the ink sheet to the recording medium.