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:
Nov. 18, 1986
Filed:
Aug. 28, 1985
Applicant:
Inventor:
Masayoshi Nagashima, Chigasaki, JP;
Assignee:
Kabushiki Kaisha Toshiba, Kanagawa, JP;
Primary Examiner:
Int. Cl.
CPC ...
G01D / ;
U.S. Cl.
CPC ...
346 / ; 3461 / ; 219543 ; 400120 ; 358298 ;
Abstract
A printing head comprises a substrate, a plurality of printing elements disposed on the substrate and adapted to print a picture element of an image, and a driving device for selectively driving the printing elements. Each of the printing elements includes a plurality of ring-shaped printing segments disposed on the substrate concentrically to each other. The printed area in the picture element is changed according to the printing segments selectively driven by the driving device and thus the gradation of the printed image is expressed by changing the printed area in a picture element.