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:
Sep. 27, 1988
Filed:
Apr. 29, 1987
Nobuhisa Kato, Kanagawa, JP;
Fuji Xerox Co., Ltd., Tokyo, JP;
Abstract
A thermal recording apparatus includes a comparator for comparing the black density of picture elements to be recorded by thermal recording elements to reference density levels, a counter accumulates a value representing the number of picture elements having density levels in certain ranges as a result of the comparison by the comparator. The counter value is used to adjust the pulse width of pulses used to energize the recording elements to compensate for fluctuations in the levels of the pulses due to the number of recording elements that are energized at one time and the durations of the energizations in order to record visible images of the picture elements with appropriate densities.