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:
May. 30, 2000
Filed:
Feb. 20, 1998
Junichi Matsuno, Tsuchiura, JP;
Shogo Matsumoto, Ibaraki-ken, JP;
Taisaku Seino, Tsuchiura, JP;
Yasushi Kinoshita, Ibaraki-ken, JP;
Akira Mori, Ibaraki-ken, JP;
Keiji Kamio, Hitachi, JP;
Akira Sasaki, Hitachi, JP;
Mitsuo Suzuki, Hitachi, JP;
Tetsuro Akasaki, Hitachinaka, JP;
Shigetaka Furukawa, Iwaki, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
An ion flow recording apparatus performs recording making density modulation every pixel. When developing on a fine grain toner is to be performed using a liquid developer for an electrostatic latent image, a developing unit (developing roller) is disposed to face a direction of gravity. Namely, a control valve is provided on a pipe for application of a developer to the developing roller or on a joint portion between the pipe and a developer tank, developing units of different two colors are joined to their developer tank portions, and a rotary shaft is provided on the joint portion to be positioned at a point of symmetry to provide alternate use of the two developing units upon turning them. Therefore, developing for a plurality of colors can be simply performed, and such turning of the developing units enables prevention of the toner from deposition in the liquid developer during developing, thereby making it possible to perform a clear recording.