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:
Oct. 08, 2002
Filed:
Apr. 26, 2001
Heater of bubble-jet type ink-jet printhead for gray scale printing and manufacturing method thereof
Applicant:
Inventors:
Chung-jeon Lee, Seoul, KR;
Young-chul Kim, Seongnam, KR;
Jae-ho Moon, Seoul, KR;
Oh-hyun Baek, Seoul, KR;
Assignee:
Samsung Electronics Co., Ltd., Suwon, KR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B41J 2/205 ; B41J 2/14 ; B41J 2/16 ;
U.S. Cl.
CPC ...
B41J 2/205 ; B41J 2/14 ; B41J 2/16 ;
Abstract
A heater of a bubble-jet type ink jet printhead enabling gray scale and manufacturing method thereof are provided. The heater includes two or more heating elements arranged concentrically around a nozzle. Each of the heating elements is formed in polygonal or annular shape and spaced apart by a different distance from the center of the nozzle. Each heating element is coupled to an electrode for applying heater drive power independently. Thus, the heater drive power is applied to each electrode selectively or in combination, thereby forming bubbles having different volumes.