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:
Sep. 08, 2026
Filed:
Mar. 16, 2023
Screen Holdings Co., Ltd., Kyoto, JP;
Hideaki Onishi, Kyoto, JP;
SCREEN Holdings Co., Ltd., Kyoto, JP;
Abstract
The return pump which feeds the ink from the collection tank to the supply tank is provided, and the differential pressure generation assistance to feed the ink from the collection tank to the return pipe by the return liquid feeder is performed concurrently with the execution of the printing differential pressure generation. In the collection tank, the volume of the air layer above the gas-liquid interface is thereby expanded, to thereby decompress the air layer, and in the supply tank, the volume of the air layer above the gas-liquid interface is thereby compressed, to thereby pressurize the air layer. Thus, the generation of the differential pressure between the collection tank and the supply tank is assisted.