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:
Apr. 24, 2012
Filed:
Apr. 07, 2009
Cary Eric Sjolander, Tigard, OR (US);
Keith W. Ragsdale, Tigard, OR (US);
Kathleen M. Faraci, Newberg, OR (US);
Heidi P. Noce, Sherwood, OR (US);
Cary Eric Sjolander, Tigard, OR (US);
Keith W. Ragsdale, Tigard, OR (US);
Kathleen M. Faraci, Newberg, OR (US);
Heidi P. Noce, Sherwood, OR (US);
Xerox Corporation, Norwalk, CT (US);
Abstract
A method detects weak or missing ink jets in an ink jet image generating system. The method includes generating a digital image of a test pattern of line segments in a process direction on an image receiving member with each line segment corresponding to one ink jet in a printhead, generating a response profile for a portion of the image receiving member on which the test pattern was generated, measuring the response profile, comparing the measurement of the response profile to a predetermined threshold, identifying missing and weak ink jets in response to the measurement of the response profile being less than the predetermined threshold, and moving the support member transversely across the process direction to a second position that enables each light sensor to image another portion of the image receiving member.