Title:
REVERSIBLE HEAT-SENSITIVE RECORDING MATERIAL
Document Type and Number:
Japanese Patent JP3268073
Kind Code:
B2
Abstract:
PURPOSE: To hold a stable image in an environment of a daily life by employing one or more types of specific compound in a material containing a dye precursor and a reversible developer in which color tone change reversibly occurs in the precursor.
CONSTITUTION: A reversible heat-sensitive recording material comprises a dye precursor which is colorless or light-colored, and a reversible developer in which color tone change reversibly occurs in the precursor due to a difference of cooling velocity after heating, wherein one or more types of compound represented by a formula is employed. Thus, the material having higher stability of an image is obtained. In the formula, A is a heterocycle containing at least one or more nitrogen atoms, such as pyrrolidine ring, piperidine ring, piperazine ring, pyrrole ring, imidazole ring, etc. Ra is 1-12C bivalent group, and preferably alkylene group, which is not bonded directly to nitrogen atom in the A, and Rb is resinous hydrocarbon group.
Inventors:
Kazuyuki Iida
Hidekazu Sano
Yukiko Mori
Hidekazu Sano
Yukiko Mori
Application Number:
JP20321293A
Publication Date:
March 25, 2002
Filing Date:
August 17, 1993
Export Citation:
Assignee:
Mitsubishi Paper Mills Co., Ltd.
International Classes:
B41M5/337; B41M5/26; B41M5/30; B41M5/333; (IPC1-7): B41M5/26; B41M5/30
Domestic Patent References:
| JP60255479A | ||||
| JP54449A | ||||
| JP6320862A |