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:
Aug. 23, 2005
Filed:
Nov. 25, 2002
Applicants:
Stuart D. Howkins, Ridgefield, CT (US);
Charles A. Willus, Newtown, CT (US);
Inventors:
Stuart D. Howkins, Ridgefield, CT (US);
Charles A. Willus, Newtown, CT (US);
Assignee:
Ricoh Printing Systems America, Inc., Simi Valley, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41J002/16 ;
U.S. Cl.
CPC ...
Abstract
A method and apparatus to prevent ink starvation includes keeping ink in a primary common reservoir at a high pressure. The ink is transferred from the primary common reservoir to a local reservoir when a pressure drop across a restrictor decreases pressure in the local reservoir. The pressure drop across a restrictor results from a higher ink flow rate due to rapid firing of the transducer.