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:
May. 13, 1997
Filed:
Jun. 11, 1996
Takeshi Fujishiro, Saitama, JP;
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Abstract
A thermal printer for use with a thermosensitive recording sheet is provided with an optical fixing device which has at least a lamp to optically fix a thermosensitive color developing layer of the recording medium. The lamp extends across a transport path of the recording sheet such that an intermediate portion of the lamp where luminance is approximately uniform extends over a range exceeding a maximum width of the recording sheet. A photosensor is disposed on a lateral side of the recording sheet so as to receive electromagnetic rays from the intermediate portion of the lamp. A control device controls the quantity of electromagnetic rays generated from the lamp in accordance with an illuminance value detected by the photosensor, so as to maintain the illuminance of an illumination area in front of the lamp to be constant.