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. 16, 2017
Filed:
Jul. 26, 2013
Applicant:
Hewlett-packard Development Company, L.p., Houston, TX (US);
Inventor:
Jeffrey F. Bell, Corvallis, OR (US);
Assignee:
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41F 13/008 (2006.01); B41F 3/58 (2006.01); B41F 13/02 (2006.01); B41F 13/08 (2006.01);
U.S. Cl.
CPC ...
B41F 3/58 (2013.01); B41F 13/008 (2013.01); B41F 13/02 (2013.01); B41F 13/08 (2013.01); B41P 2213/20 (2013.01);
Abstract
A differential printing device includes a first print drum including a first ring gear defined on an outside surface of the first print drum. The device also includes a second print drum including a second ring gear defined on an outside surface of the second print drum. A drive shaft that rotates the first print drum and the second print drum has a number of pinion gears to engage the first ring gear and the second ring gear. The number of pinion gears rotate the first print drum and the second print drum at different angular velocities.