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:
Feb. 13, 1990
Filed:
Oct. 06, 1988
Applicant:
Inventors:
Makiko Tokita, Chiba, JP;
Masahiro Nakagawa, Hokkaido, JP;
Akira Kobayashi, Aichi, JP;
Kenji Yasuda, Chiba, JP;
Assignee:
OJI Paper Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41M / ;
U.S. Cl.
CPC ...
428330 ; 3461351 ; 428195 ; 428206 ; 428207 ; 428211 ; 428342 ; 428447 ; 428500 ; 428507 ; 428514 ; 428522 ; 4285371 ; 4285375 ;
Abstract
An ink jet recording sheet includes a sheet-like substrate composed mainly of 70 to 100 wt % of wood pulp and 0 to 30 wt % of precipitated calcium carbonate and having a Stockigt sizing degree of not less than 2 seconds and not more than 25 seconds when formed into a sheet having a basis weight of 64 g/m.sup.2, and a coating layer composed mainly of white pigment, with the coating layer being formed on at least one side of the substrate at a weight of 1 to 10 g/m.sup.2. This sheet has a high ink absorption rate and is able to develop bright colors and sharp images.