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:
Apr. 27, 1976
Filed:
Mar. 12, 1974
Nippon Telegraph and Telephone Public Corporation, Tokyo, JA;
Sharp Kabushiki Kaisha, Osaka, JA;
Abstract
It is essential for an ink jet system printer of the charge amplitude controlling type that an ink drop separation rhythm is in correct phase relation with respect to the application of charging signals. Detection of such phase relation may be achieved by forming phase detecting ink drops in addition to printing ink drops, charging these phase detection drops with phase detection signals and then measuring the amplitude of the charges on the individual drops. One approach to detecting the amplitude of charge on the phase detecting drops is to establish a panel shaped or strip shaped detection electrode adjacent the wake of the ink drops thereby enabling said detection by virtue of electrostatic induction.