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:
Dec. 15, 2020
Filed:
Mar. 17, 2019
Applicants:
Ryuuta Katoh, Chiba, JP;
Norimasa Sohgawa, Kanagawa, JP;
Hiroki Takahashi, Kanagawa, JP;
Inventors:
Assignee:
Ricoh Company, Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
B41J 2/045 (2006.01); B41J 29/393 (2006.01);
U.S. Cl.
CPC ...
B41J 2/04588 (2013.01); B41J 2/04508 (2013.01); B41J 2/04581 (2013.01); B41J 29/393 (2013.01); B41J 2029/3935 (2013.01);
Abstract
A liquid discharge apparatus includes a liquid discharge head and a pattern printer. The liquid discharge head includes a plurality of nozzles to discharge liquid. The pattern printer drives the liquid discharge head to print a plurality of adjacent rectangular patterns under different drive conditions. The adjacent rectangular patterns are a reference pattern and an adjustment pattern.