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:
Dec. 03, 1996
Filed:
Nov. 25, 1994
Herman A Hermanson, Penfield, NY (US);
Xerox Corporation, Stamford, CT (US);
Abstract
A method of extending the useful life of a printbar for black ink in a multi-color printbar, full width array color ink jet printer by checking each nozzle in the printbar for droplet ejection; identifying any nozzle which fails to eject a droplet as a problem nozzle, and substituting at least one droplet from a nozzle in another printbar having a different color of ink. The substitute fill-in with a cyan droplet, cyan and magenta droplets, or cyan, magenta, and yellow droplets for process black prevents a missing spot and provides adequate printing quality for black printing, such as, for text, so that immediate printbar replacement is avoided, thereby extending the printbar life.