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. 22, 2016
Filed:
Sep. 14, 2015
Applicant:
Riso Kagaku Corporation, Tokyo, JP;
Inventor:
Isao Matsushima, Ibaraki, JP;
Assignee:
RISO KAGAKU CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B41J 2/18 (2006.01); B41J 2/165 (2006.01); B41J 2/175 (2006.01);
U.S. Cl.
CPC ...
B41J 2/17566 (2013.01); B41J 2/18 (2013.01);
Abstract
A controller controls an ink liquid feeding operation performed by an ink pump from a negative pressure tank to a pressure tank, and an ink replenishing operation performed by an ink replenisher according to a liquid level in each of the pressure tank and the negative pressure tank so that, during purging, the liquid level in each of the pressure tank and the negative pressure tank is maintained at a reference level.