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:
May. 30, 2017
Filed:
Nov. 08, 2013
Peking University Founder Group Co., Ltd., Beijing, CN;
Peking University, Beijing, CN;
Founder Information Industry Holdings Co., Ltd., Beijing, CN;
Beijing Founder Electronics Co., Ltd., Beijing, CN;
Yongtai Zhang, Beijing, CN;
Zhihong Liu, Beijing, CN;
PEKING UNIVERSITY FOUNDER GROUP CO., LTD., Beijing, CN;
PEKING UNIVERSITY, Beijing, CN;
FOUNDER INFORMATION INDUSTRY HOLDINGS CO., LTD., Beijing, CN;
BEIJING FOUNDER ELECTRONICS CO., LTD., Beijing, CN;
Abstract
A method and device for checking nozzles in an inkjet printer is disclosed. The checking method comprises: obtaining an electronically scanned image which is a printed paper image printed by the inkjet printer according to a checking image, correspondence relationships between pixel point positions and numbers of nozzles in the inkjet printer being preset in the checking image (step 11); analyzing the scanned image to obtain pixel point positions free of ink in the scanned image (step 12); and according to the pixel point positions free of ink, obtaining and outputting the corresponding nozzle numbers (step 13). This invention may realize automatic checking of blocked nozzles, improve the convenience of checking, and reduce the error rate of checking.