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. 22, 1982
Filed:
Sep. 11, 1980
Applicant:
Inventors:
Assignee:
Sharp Kabushiki Kaisha, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41J / ; G01D / ;
U.S. Cl.
CPC ...
346 75 ; 3461 / ;
Abstract
An ink jet system printer of the charge amplitude controlling type includes a reciprocating printer head and a constant flow rate plunger pump. An actual printing operation is conducted while the printer head is driven to travel forward, and the constant flow rate plunger pump is energized to develop the ink liquid when the printer head is driven to travel backward. A pressure accumulator of a small capacity is disposed between the constant flow rate plunger pump and the printer head for minimizing the pressure pulsation created by the constant flow rate plunger pump.