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:
Dec. 07, 1982
Filed:
Jun. 25, 1981
Applicant:
Inventor:
Harry L Wallace, Livonia, MI (US);
Assignee:
Burroughs Corporation, Detroit, MI (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B08B / ; G01D / ;
U.S. Cl.
CPC ...
134 18 ; 15319 ; 134 21 ; 239106 ; 3461 / ;
Abstract
A method and apparatus for removing dust and trapped air from the orifices of an ink jet printer employed in a document handling machine. A vacuum is applied periodically to clean the ink jet head of dust, entrapped air and excess ink. The period is established in accordance with predetermined requirements and is measured by a count of documents or other measurements of time relating to the passage of documents.