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:
Jan. 08, 2013
Filed:
Dec. 15, 2008
Shinichi Miyashita, Yamanashi, JP;
Shinichi Miyashita, Yamanashi, JP;
Citizen Systems Japan Co., Ltd., Tokyo, JP;
Abstract
There is provide a printer having a rotational driving mechanism in which a print sheet can be fed in both of forward and reverse directions and a platen can be securely supported without dropping off from a head holder. The printer contains a head unit, a platenthat is freely rotatably mounted on the head unitto support a print sheet and feed a print sheet through rotation, and a print headfor performing print on the print sheet supported by the platen. The head unithas support groovesfor supporting the rotational shaftof the platen, and a rotational driving mechanismhaving plural gears for transmitting the rotational driving force of a driving motorto a platen-side gear. The rotational driving mechanismcontains a gearat the end side and two planetary gearsand. When the print sheet is fed in the forward direction, the first planetary gearis engaged with the platen-side gearto transmit the rotational driving force, and also when the print sheet is fed in the reverse direction, the second planetary gearis engaged with the platen-side gearto transmit the rotational force.