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.:

US 6445897 B1

PDF
Full Text
Expired
Date of Patent:
Sep. 03, 2002

Filed:

Feb. 15, 2001
Applicant:
Inventors:

Tsutomu Uezono, Tokyo, JP;

Jyun Koyatsu, Niigata, JP;

Ryouichi Yasuda, Niigata, JP;

Tomoyuki Yoshii, Tokyo, JP;

Assignee:

NEC Corporation, Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G 1/510 ;
U.S. Cl.
CPC ...
G03G 1/510 ;
Abstract

In a wet-type developing apparatus in which a latent image carrying member and a squeeze roller are moved in the opposite directions to each other while they are not brought into contact with each other at the closest position thereof, a liquid toner layer on the latent image carrying member which is smaller in thickness than the gap interval between the latent image carrying member and the squeeze roller is made to invade into the gap, and the liquid toner invading into the gap between the squeeze roller and the latent image carrying member are brought into contact with the squeeze roller by electrical attractive force based on electric field formed between the squeeze roller and the latent image carrying member, thereby forming meniscus.


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