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:
Jun. 30, 2009
Filed:
Jan. 21, 2005
Masatoshi Nakanishi, Kyoto, JP;
Masatoshi Nakanishi, Kyoto, JP;
Rohm Co., Ltd., Kyoto, JP;
Abstract
A thermal printhead (A) includes a substrate () and a plurality of heat-producing resistance sections () provided on the substrate (). The heat-producing resistance sections () melt ink of an ink ribbon, which is transferred together with a recording sheet, to transfer the ink onto the recording sheet. An inequality surface region () is provided downstream from the heat-producing resistance sections () in a secondary scanning direction (x) which is the transfer direction of the ink ribbon. The inequality surface region includes a plurality of projections () each of which extends in the secondary scanning direction (x) and which are aligned at predetermined intervals in a primary scanning direction (y) which is perpendicular to the secondary scanning direction (x).