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:
Oct. 02, 1984
Filed:
Sep. 24, 1982
Masatoshi Koyama, Nara, JP;
Seiichi Tanaka, Yamatokoriyama, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A thermal head recording device includes a thermal head adapted to print a sheet, a source of information alternately producing coded image signal having an arbitrary length and coded EOL signal, decoder for decoding the coded image signal and coded EOL signal into image signal having a predetermined length and EOL signal, respectively. The image signal is transmitted to the thermal head in response to a driving pulse produced from driving pulse generator. The driving pulse generator includes a measuring circuit for measuring cycle length between two consecutive EOL signals, a circuit for detecting temperature of the thermal head, a circuit for determining pulse duration based on both the cycle length between two consecutive EOL signals measured by the measuring circuit and the temperature of the thermal head, a circuit for producing at least one reference pulse having a predetermined frequency, and a circuit for producing a driving pulse having a frequency determined by the reference pulse producing circuit and a pulse duration determined by the determining circuit.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile