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 8304042 B1

PDF
Full Text
Expired
Date of Patent:
Nov. 06, 2012

Filed:

Feb. 03, 2010
Applicants:

Yuka Ito, Ashigarakami-gun, JP;

Takashi Matsubara, Ashigarakami-gun, JP;

Shinji Hasegawa, Ashigarakami-gun, JP;

Suguru Nakaso, Ashigarakami-gun, JP;

Makoto Furuki, Ashigarakami-gun, JP;

Minquan Tian, Ashigarakami-gun, JP;

Inventors:

Yuka Ito, Ashigarakami-gun, JP;

Takashi Matsubara, Ashigarakami-gun, JP;

Shinji Hasegawa, Ashigarakami-gun, JP;

Suguru Nakaso, Ashigarakami-gun, JP;

Makoto Furuki, Ashigarakami-gun, JP;

Minquan Tian, Ashigarakami-gun, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B44F 1/10 (2006.01); B41M 5/00 (2006.01); B44C 1/17 (2006.01); G03G 9/00 (2006.01); G03G 15/06 (2006.01); C09D 103/06 (2006.01);
U.S. Cl.
CPC ...
Abstract

The present invention provides a recording medium containing a first image formed with a first recording material; and a second image comprising a first region formed with a second recording material having approximately the same light fastness as that of the first recording material, and a second region formed with a third recording material having higher light fastness than that of the first recording material, a color of the second region being a color corresponding to any stage of a process of discoloration of the first region.


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