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:
Jul. 03, 2012
Filed:
Oct. 09, 2008
Applicants:
Matthew Tomlin, Cambridge, GB;
Salhadin Omer, Cambridge, GB;
Michael Jeffrey Stamp, Leicester, GB;
Robert Smith, Thrapston, GB;
Inventors:
Matthew Tomlin, Cambridge, GB;
Salhadin Omer, Cambridge, GB;
Michael Jeffrey Stamp, Leicester, GB;
Robert Smith, Thrapston, GB;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41J 29/38 (2006.01); B41J 2/02 (2006.01); B41J 2/07 (2006.01);
U.S. Cl.
CPC ...
Abstract
A continuous ink jet printer comprises a gutter for collecting ink droplets not used in printing. Pumping apparatus draws ink from the gutter and control apparatus is configured to vary the level of pumping by the pumping apparatus depending on the temperature or other parameter of the ink. As the temperature of the ink increases the level of pumping is reduced. The pumping apparatus may comprise two venturi pumps connected in parallel each having its throat connected to the gutter.