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. 14, 2015
Filed:
Jan. 07, 2010
Applicants:
Henryk Birecki, Palo Alto, CA (US);
William D. Holland, Palo Alto, CA (US);
Omer Gila, Cupertino, CA (US);
Inventors:
Henryk Birecki, Palo Alto, CA (US);
William D. Holland, Palo Alto, CA (US);
Omer Gila, Cupertino, CA (US);
Assignee:
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B41F 33/00 (2006.01); G01N 33/32 (2006.01);
U.S. Cl.
CPC ...
G01N 33/32 (2013.01); B41F 33/0036 (2013.01); Y10S 101/45 (2013.01);
Abstract
A method for determining optical density is disclosed. A first measurement is taken on a white area of a substrate (). A second measurement is taken on an area of the substrate printed with ink (). A relative optical density of the ink is determined using the first and second measurements ().