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. 01, 2004
Filed:
Feb. 05, 2003
Takumi Seino, Chiba, JP;
Seiichi Jimbo, Chiba, JP;
SII P & S Inc., Chiba, JP;
Abstract
A thermal printer has a printing head, a platen for urging the paper against the printing head, a bearing for rotatably holding the platen shaft and having an engagement portion for holding the platen in place, a movable platen frame for moving the bearing between a first position to perform printing and a second position at which the bearing is spaced further apart from the printing head than in the first position, and a frame having an engagement groove engageable with the engagement portion of the bearing when the platen is moved into the first position to perform painting, the engagement groove having a shape corresponding to the engagement portion of the bearing. The engagement portion of the bearing has a symmetrical, non-circular shape with respect to a central axis of the platen shaft, so that idle rotation of the platen bearing is prevented.