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. 12, 1978
Filed:
Sep. 10, 1976
Applicant:
Inventors:
Syoichi Ito, Ibaraki, JP;
Takahiro Yamada, Hitachi, JP;
Assignee:
Hitachi, Ltd., , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01D / ;
U.S. Cl.
CPC ...
346 75 ;
Abstract
An ink jet printer uses a detector circuit for detecting the relation between the generation of an ink droplet and the phase of a charging signal on the basis of an output signal of a sensor against which the ink droplets charged by a phase detecting signal collide. A phase shift circuit is provided for matching the generation of the ink droplet and the phase of the charging signal on the basis of an output signal of the detector circuit, and an inhibit circuit is used for inhibiting the phase shift circuit from operating for a predetermined period after the phase shift circuit has operated.