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:
Sep. 01, 1992
Filed:
Aug. 14, 1991
Hideo Hotomi, Osaka, JP;
Hisashi Myochin, Osaka, JP;
Minolta Camera Kabushiki Kaisha, Osaka, JP;
Abstract
An inkjet printer which comprises a nozzle having an exit opening; an electric field curtain forming unit for causing an electric field curtain force or a travelling-wave electric field curtain to act on inking material located in the vicinity of the exit opening of the nozzle; a charge injecting unit disposed in the vicinity of the exit opening of the nozzle for injecting an electric charge into the inking material; and an image control unit operable in response to image information to control the charge injecting unit to vary the amount of electric charge to be injected into the inking material. The inking material located in the vicinity of the nozzle can be expelled outwardly from the nozzle by the action of the electric field curtain force in a quantity dependent on the amount of the electric charge injected by the charge injecting unit.