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. 20, 1989
Filed:
Jun. 10, 1987
Masanori Yoshikawa, Mino, JP;
Shuichi Watanabe, Yahata, JP;
Matsushita Electric Industrial Co., Ltd., Kadoma, JP;
Abstract
A thermal copying apparatus disclosed holds an original and a recording sheet in intimate contact with each other between a holding member and a transparent member and operates a light source to irradiate the original through the transparent member thereby to effect a copying operation thermosensitively. The apparatus further has at least one of a heater for heating the transparent member at a portion where the original and the recording sheet are fed into prior to the copying operation, a cooling fan for generating a cooling gas flowing perpendicularly to the conveying direction of the original and the recording sheet and reversing its flowing direction at predetermined cycles, a sensor for detecting temperature of the transparent member, and a circuit for controlling energy of the light source in accordance with the detected temperature, thus being capable of always obtaining uniform copying density.