Title:
MULTICOLORED THERMAL RECORDING SUBSTANCE
Document Type and Number:
Japanese Patent JP3880872
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a multicolored thermal recording substance which yields a vivid color tone for each of the color tones at a low and high temperature while having a superior color separation without fogging between the two color tones of the low temperature and high temperature coloring.
SOLUTION: For the multicolored thermal recording substance, at least one kind of the dye precursors is contained in a composite fine particle containing the dye precursor and a polymer of a polyisocyanate compound. As the polyisocyanate compound, a 4,4'-diisocyanate-3,3'-dimethyl-1,1'-biphenyl and/or a polymethylene-polyphenyl-polyisocyanate are contained in the same substance.
Inventors:
Tatsuo Nagai
Kaoru Hamada
Chuichi Fukuchi
Takashi Sasaki
Kaoru Hamada
Chuichi Fukuchi
Takashi Sasaki
Application Number:
JP2002057675A
Publication Date:
February 14, 2007
Filing Date:
March 04, 2002
Export Citation:
Assignee:
NIPPON PAPER INDUSTRIES CO.,LTD.
International Classes:
B41M5/28; B41M5/30; B41M5/337; B41M5/34; (IPC1-7): B41M5/28; B41M5/34
Domestic Patent References:
| JP2001018529A | ||||
| JP2001239760A | ||||
| JP2001113836A | ||||
| JP2002002115A | ||||
| JP10142722A | ||||
| JP10166731A | ||||
| JP9142025A | ||||
| JP11058983A | ||||
| JP9076634A |
Attorney, Agent or Firm:
Hiroshi Tanaka
Eishiro Higuchi
Harumi Miyamoto
Eishiro Higuchi
Harumi Miyamoto