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. 27, 1987
Filed:
Jul. 16, 1985
Takashi Inoue, Asaka, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A thermal printhead driving system of the present invention is to be applied to the case in which a print line is divided into two or more blocks and the print line is driven block by block from one end to the other in sequence. In accordance with the present driving system, a dot of interest is monitored as to whether it is a dot at each end of a block or not, and this information is used to differently define an address which is used to access a predetermined table of driving energy levels. In the preferred embodiment, the address is so defined to access an increased energy level if the dot of interest is an end dot of a block thereby providing an increasing level of driving energy to the end dot, so that a printed image high in quality can be obtained even with a block driving scheme.