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:
Oct. 18, 1983
Filed:
Oct. 26, 1981
Robert D Houston, Marion, NY (US);
Frank J Liptak, Webster, NY (US);
Xerox Corporation, Stamford, CT (US);
Abstract
In an ink jet printer, improved ink droplet sensing method and apparatus. The disclosed full width ink jet printer includes a number of ink jet nozzles which direct ink droplets to specific regions of a print plane. The present sensing technique insures ink drops from the multiple nozzles 'stitch' together properly across the printing plane. Multiple sensing sites (two for each nozzle) are comprised of a light input optical fiber and two output fibers coupled to circuitry to monitor light intensity at the sensing site. The sensitivity of the site is enhanced by electroformed input and output masks which reduce the effective send and receive area of the optical fibers.