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:
Nov. 11, 1997
Filed:
Oct. 22, 1996
Applicant:
Inventors:
Richard G Crystal, Los Altos, CA (US);
Raymond Geffre, Fort Fairfield, ME (US);
Sven Karlsson, San Jose, CA (US);
Assignee:
Graphic Utilities, Inc., Concord, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41J / ;
U.S. Cl.
CPC ...
347 85 ;
Abstract
A method for refilling an ink cartridge which contains an elastic bladder within the ink reservoir cavity that is connected to outside pressure. The methodology of the invention teaches how to seal and unseal the bladder and ink regions in sequential steps and how to inject ink into the ink reservoir cavity so it may be re-used and not discarded.