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.

Date of Patent:
Jun. 06, 1995

Filed:

Feb. 08, 1993
Applicant:
Inventors:

Reiko Akiyama, Edwardsville, IL (US);

Chiaki Suzuki, Minami-ashigara, JP;

Atuhiko Eguchi, Minami-ashigara, JP;

Takayoshi Aoki, Minami-ashigara, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G / ; G03G / ;
U.S. Cl.
CPC ...
4301066 ; 430111 ; 430137 ;
Abstract

A developer for developing an electrostatic latent image, said developer comprising (i) a toner containing at least a binder resin and a colorant, and (ii) substantially spherical silica fine particles having a bulk density of not less than 300 g/l; a process for producing the developer; and a process for forming a toner image using the developer. The developer exhibits satisfactory fluidity and satisfactory cleanability while retaining environmental stability and durability. The developer causes no toner filming on the surface of a photoreceptor, the surface of a carrier, or the surface of a charge-imparting member.


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