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. 18, 1998
Filed:
Oct. 07, 1996
Alps Electric Co., Ltd., , JP;
Abstract
A thermal transfer printer comprises an intermediate transfer roller, a thermal print head for transferring portions of an ink layer formed on an ink ribbon to the circumference of the intermediate transfer roller in ink dots, and a pressure drum to be pressed against the intermediate transfer roller to transfer the ink dots from the intermediate transfer roller thereto, provided with grippers on its circumference and with end plates each having a cam section. The cam sections have a height from the circumference of the pressure drum greater than that of the upper ends of the grippers from the circumference of the pressure drum at its opposite ends to avoid the collision of the grippers with the intermediate transfer roller, and have a radially outward convex curved shape. The length of the bases of the cam sections is greater than the distance between two edges between the circumference of the pressure drum and the flat surface formed by cutting a portion of the circumference of the pressure drum.