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:
Sep. 02, 1997

Filed:

Jul. 03, 1995
Applicant:
Inventors:

Kunio Sakurai, Kanagawa, JP;

Tsukasa Matsuda, Kanagawa, JP;

Kyoko Inoue, Kanagawa, JP;

Harumi Watanabe, Tokyo, JP;

Masaru Kato, Tokyo, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
4283044 ; 428195 ; 428211 ; 428219 ; 428323 ; 428340 ; 428342 ; 428409 ; 4285375 ;
Abstract

Transfer paper for electrophotography of the present invention includes base paper; and a coating layer provided on at least one side of the base paper. The coating layer includes a pigment and a binder, has a solids content in the range of 2 to 10 g/m.sup.2, and has void-free areas containing no voids having a circle-equivalent diameter of equal to or more than 1 .mu.m and void area containing voids whose circle-equivalent diameter is equal to or more than 1 .mu.m. A proportion of void areas whose equivalent circle diameter is more than 20 .mu.m is not more than 2%, and the average equivalent circle diameter of the void areas and that of the void-free areas as observed on the surface of the coating layer satisfy at least one of the following conditions: (1) the average equivalent circle diameter of the void areas and that of the void-free areas are each from 1.5 to 10 .mu.m; (2) the average equivalent circle diameter of the void areas and that of the void-free areas are each 0.2 to 1.5 times the volume average particle size of the toner used for image formation; and (3) the average equivalent circle diameter of the void areas is from 1.0 to 10.0 .mu.m and that of the void-free area is from 1.5 to 10 .mu.m.


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