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:
Apr. 16, 2002
Filed:
May. 01, 2000
Yuichi Sugiyama, Tokyo, JP;
Michitaka Fukuda, Tokyo, JP;
Copyer Co., Ltd., Tokyo, JP;
Abstract
In order to reduce the number of signal lines of the cable between the controller and the carriage and to allow the print timing of each head to be adjusted in increments smaller than one pixel, the signal lines include a line for carrying serial print data to be supplied to a plurality of print heads in a predetermined order, a line for carrying a clock signal corresponding to individual bits of the data, lines for carrying signal HDSEL[1 . . . 0] indicating which print head corresponds to which print data included in the serial print data, and lines for driving the heads. When data is transferred over this cable, one slice section is divided into a plurality of sections, the slice section corresponding to a time slot required to transfer a unit of print data corresponding to a plurality of dot printing elements of the plurality of heads, each divided section is further divided into a number of subsections the number of which is equal to the number of the print heads. The transfer of the print data of each print head is started independently of the print data of other print heads, beginning with its arbitrary subsection.