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:
Feb. 07, 2012
Filed:
Dec. 04, 2008
Kimitaka Hirai, Chiba, JP;
Akihiko Ito, Chiba, JP;
Kimitaka Hirai, Chiba, JP;
Akihiko Ito, Chiba, JP;
Seiko Instruments Inc., , JP;
Abstract
A thermal printer has a thermal head pivotally mounted on a main body frame to pivot toward and away from a platen roller. The platen roller has shaft bearings at opposite ends thereof that are removably inserted in two spaced-apart opposed slots formed in the main body frame to rotatably support the platen roller. First springs bias a pivotal lock arm to a locked position to prevent removal of the shaft bearings from the slots, and second springs bias the thermal head toward the platen roller. Manual pivotal movement of the lock arm to an unlocked position permits removal of the shaft bearings from the shaft. The biasing directions of the first and second springs are parallel, which reduces the stroke distance of the first springs resulting in size reduction of the thermal printer.