Title:
感熱記録材料
Document Type and Number:
Japanese Patent JP3586428
Kind Code:
B2
Abstract:
This invention relates to a thermal recording material with outstanding color-developing sensitivity and storage stability of images. The thermal recording material comprising a support and a thermosensitive color-developing layer provided thereon comprising a leuco dye which is colorless or light-colored at normal temperature, an organic acid substance which reacts upon heating with the leuco dye to develop color and a sensitizer. Said thermosensitive color-developing layer comprises at least one kind of diphenyl sulfone derivative selected from 4-hydroxydiphenyl sulfone derivatives represented by the following general formula (1) or general formula (2), 4,4'-dihydroxydiphenyl sulfone and 2,4'-dihydroxydiphenyl sulfone as an organic acid substance and a 4-acylbiphenyl as a sensitizer. (wherein R1 is an alkyl, aralkyl or aryl group) (wherein Y is a divalent organic group and n is an integer in the range 0-6)
Inventors:
Takashi Matsumoto
Yasuhisa Tsutsumi
Yasuhisa Tsutsumi
Application Number:
JP2000615226A
Publication Date:
November 10, 2004
Filing Date:
April 27, 2000
Export Citation:
Assignee:
Nippon Steel Chemical Co., Ltd.
International Classes:
B41M5/333; B41M5/337; B41M5/30; B41M5/40; B41M5/42; (IPC1-7): B41M5/30; B41M5/26
Domestic Patent References:
| JP10297090A | ||||
| JP4112080A | ||||
| JP2076779A | ||||
| JP61246088A |
Attorney, Agent or Firm:
Katsuo Naruse
Tomohiro Nakamura
Eiichi Sano
Tomohiro Nakamura
Eiichi Sano