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:
Jul. 14, 2009
Filed:
Aug. 17, 2007
Kimitaka Hirai, Chiba, JP;
Kimitaka Hirai, Chiba, JP;
Seiko Instruments Inc., , JP;
Abstract
There is provided a thermal printer () including: a main body frame (); a thermal head () swingably mounted to the main body frame (); a platen roller () disposed to be opposed to a printing surface () of the thermal head (), for sandwiching a thermal paper with the thermal head () to feed the thermal paper; a lock arm () swingably mounted to the main body frame (), for locking the platen roller () with the main body frame () by pressing a shaft bearing () which rotatably supports the platen roller () against the thermal head (); a first spring () disposed between the lock arm () and the thermal head (), for biasing the platen roller () in a direction in which the platen roller () moves toward the thermal head (); and a second spring () disposed between the thermal head () and the main body frame (), for biasing the thermal head () in a direction in which the thermal head () comes into close contact with the platen roller (), in which the first spring () is disposed so that the first spring () applies a biasing force to the lock arm () at a position where the first spring () is closer to a swing center () of the lock arm () than the second spring () is.