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:
Feb. 05, 2002
Filed:
Nov. 30, 2000
Fuyuki Inui, Saitama, JP;
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Abstract
A head driver for thermal printing drives plural heating elements in a heating element array according to heating data for respectively the plural heating elements, to record dots of one line thermally by heating color thermosensitive recording material. A first data train is output, including gradation level data of gradation levels 0, 2, 4, . . . , 510. One-line image data for plural pixels in the one line is serially compared with the gradation level data in the first data train, so as to create even number gradation heating data in a serial signal form. Simultaneously with the first data train, a second data train is output, including gradation level data of gradation levels 1, 3, 5, . . . , 511. The one-line image data is serially compared with the gradation level data in the second data train, so as to create odd number gradation heating data in a serial signal form. After transfer to the head driver, the even number gradation heating data is converted into a parallel signal form. Also, the odd number gradation heating data is converted into a parallel signal form. The heating elements are supplied with respectively a drive signal by alternately reading the even and odd number gradation heating data.