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. 02, 2020
Filed:
Dec. 05, 2018
Screen Holdings Co., Ltd., Kyoto, JP;
Asuka Muramatsu, Kyoto, JP;
Seiya Nomura, Kyoto, JP;
SCREEN HOLDINGS CO., LTD., Kyoto, JP;
Abstract
A head voltage correcting method for inkjet printing apparatus which perform printing with a head having a plurality of head modules includes the following steps: a testing chart printing step for printing testing charts which includes a lowest density head module check pattern, satellite check patterns, band-by-band density variable patterns, and in-band density variable patterns; a lowest density head module determining step for determining a lowest density head module; a satellite-free drive voltage determining step; and a new reference voltage determining step for determining a drive voltage of the band-by-band density variable patterns of the adjacent head module to be a new reference voltage for the adjacent head module.