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:
Jun. 25, 2019
Filed:
Sep. 18, 2017
Riso Kagaku Corporation, Tokyo, JP;
Mamoru Saito, Ibaraki, JP;
RISO KAGAKU CORPORATION, Tokyo, JP;
Abstract
A controlling unit performs the following operations: (i) the controlling unit drives a pump with a direct valve closed and an air compression valve opened in initial filling of an inkjet head with ink; (ii) the controlling unit closes the air compression valve when a tip of ink introduced in an ink route reaches a prescribed position between a joining joint part and the air compression valve; (iii) the controlling unit stops the pump and opens the direct valve after closing the air compression valve; (iv) the controlling unit closes the direct valve and opens the air compression valve after the ink, which flows backward due to restoration of compressed air between the air compression valve and the ink, moves air in a direct route into the ink cartridge; and (v) the controlling unit drives the pump to fill the inkjet head with ink.