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. 04, 2003
Filed:
Feb. 03, 1999
Applicant:
Inventors:
Assignee:
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41J 2/165 ;
U.S. Cl.
CPC ...
B41J 2/165 ;
Abstract
There is disclosed an apparatus for restoring an ink jet recording head which can securely recover the ink jet recording head from the ink non-ejection condition caused by foreign particles or bubbles adhering inside the ink passage of an ejecting nozzle and which can prevent unnecessary bubbles from generating in the ink jet recording head. In the restoring operation, in which foreign particles are discharged together with ink from the ejecting nozzle by pressurizing the ink in an ink tank, an inner pressure of an ink supply passage is adjusted to reach a set pressure value.