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:
Jun. 01, 1976
Filed:
Aug. 26, 1974
Werner Jung, Morton Grove, IL (US);
Kurt E Knuth, Mount Prospect, IL (US);
Teletype Corporation, Skokie, IL (US);
Abstract
An ink supply system for an ink jet recorder wherein ink is emitted by a nozzle and impinges on a sheet of paper. An open-cell-foam-filled container supplies ink to a tube-shaped pump chamber which holds at least enough ink to print one page of copy. The tube is squeezed in such a manner as to deliver ink at a substantially constant pressure to the nozzle, which forms the jet. Ink emitted by the nozzle but not impinging on the paper is returned to the container. A check valve prevents ink from returning from the tube-shaped pump chamber to the foam-filled container except via the nozzle. Release of the squeezed tube draws ink from the foam-filled container into the tube-shaped pump chamber.