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:
Sep. 20, 2005
Filed:
Oct. 17, 2002
Kuniyuki Senga, Nagoya, JP;
Hiroki Harata, Nagoya, JP;
Makoto Miyamoto, Nagoya, JP;
The Pilot Ink Co., Ltd., Aichi, JP;
Abstract
This invention provides a reversibly thermochromic ultraviolet ray-hardening type ink having good color change sensitivity and excellent light resistance and fastness, and a reversibly thermochromic laminate produced using the same. The present invention also provides a reversibly thermochromic laminate produced by forming a reversibly thermochromic layer on a support using the same. The ink comprises: (1) a microencapsulated pigment comprising a reversibly thermochromic composition comprising (A) an electron-donating compound, (B) an electron-accepting compound and (C) a color change temperature-controlling agent which controls color reaction generation temperature of the former two compounds; and (D) a light resistance-providing agent represented by a specific formula, and (2) a photo-polymerizable composition comprising an ultraviolet ray absorbent, a reactive oligomer, a reactive monomer, and an acylphosphine oxide photo-polymerization initiator, wherein said microencapsulated pigment is dispersed in said photo-polymerizable composition.