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:
May. 24, 1994
Filed:
Apr. 03, 1992
Mitsuo Sato, Miyagi, JP;
Yusuke Tanno, Miyagi, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A thermal plate-making apparatus has a line thermal head comprising a plurality of heat units aligned on a line. Each of the heat units comprises electrodes and plural heat elements located therebetween. The apparatus effectively prevents back face reprint of image in a stack of printed sheets, stains due to rubbing between the printed sheets, and dotted images, allowing printing of stable image density. Further, a thermal plate-making apparatus has a line thermal head comprising heat units aligned in a first direction, in which each of the heat units comprises a pair of electrodes opposed in a second direction perpendicular to the first direction and a heat element positioned between the electrodes, and in which the heat element is formed not lower than the electrodes. This apparatus also effectively prevents the back face reprint with the minimum ink transfer amount necessary for printing, providing a loyal print image.