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. 08, 2004
Filed:
Feb. 02, 2001
Applicant:
Inventors:
Yasunobu Kidoura, Miyagi, JP;
Satoshi Katoh, Miyagi, JP;
Yasumitsu Yokoyama, Miyagi, JP;
Yoshiyuki Shishido, Miyagi, JP;
Assignee:
Tohoku Ricoh Co., Ltd., Shibata-gun, JP;
Primary Examiner:
Int. Cl.
CPC ...
B41J 2/36 ; B41J 2/365 ; B41C 1/055 ;
U.S. Cl.
CPC ...
B41J 2/36 ; B41J 2/365 ; B41C 1/055 ;
Abstract
A thermal master making device and a thermal printer including the same are disclosed. A thermistor senses ambient temperature around a thermal head. A correcting device corrects the amount of heat to be generated by the thermal head, i.e., the duration of energization at least two times during a single master making operation. This configuration reduces a change in the perforation conditions of a thermosensitive medium ascribable to the heat accumulation characteristic of the head. The printer achieves high resolution, high-speed master making and space saving.