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. 14, 1997
Filed:
Jun. 04, 1993
Applicant:
Inventor:
Fumikazu Nagano, Yamato-Koriyama, JP;
Assignee:
Sharp Kabushiki Kaisha, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41J / ;
U.S. Cl.
CPC ...
347211 ;
Abstract
A thermal recording apparatus includes a thermal head. Printing for multi-tone density is performed by changing an energizing time of the thermal head. The apparatus has a controller for controlling the energizing time and an interrupting circuit. The controller controls the energizing time to match to a value corresponding to a tone density for printing. The interrupting circuit puts an interrupt period of energizing for the energizing time if the energizing time is equal to or more than a predetermined time. A plurality of different counters is provided for increasing the interrupt period in duration stepwisely.