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Title:
HEAT-SENSITIVE RECORDING MATERIAL
Document Type and Number:
WIPO Patent Application WO/2008/038645
Kind Code:
A1
Abstract:
Disclosed is a heat-sensitive recording material which is excellent in color developing sensitivity, while having good storage properties such as heat resistance, moisture resistance and water resistance. Specifically disclosed is a heat-sensitive recording material wherein a heat-sensitive recording layer, which contains a colorless or pale-colored basic leuco dye and a developer for developing the color of the basic leuco dye, is formed on a supporting body. This heat-sensitive recording material is characterized in that the developer contains a first developer composed of a condensate represented by the general formula (I) below or a condensate composition, and a second developer other than the first developer, and the ratio of the first developer to the total amount of the developers is not less than 2% by weight but less than 50% by weight. (I) (In the formula, R represents a hydrogen atom, a halogen atom, a hydroxy group, a lower alkyl group, an alkoxyl group, a cyano group, a nitro group, an aryl group or an aralkyl group, and the m-number of R's may be the same as or different from one another; m represents an integer of 0-3; n represents an integer of 0-3; and X and Y independently represent a hydrogen atom, an alkyl group or an aryl group.)

Inventors:
NATSUI JUNPEI (JP)
KOHAMA YUJI (JP)
SUGA MAMORU (JP)
AOSAKI YOSHIMUNE (JP)
Application Number:
PCT/JP2007/068623
Publication Date:
April 03, 2008
Filing Date:
September 26, 2007
Export Citation:
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Assignee:
JUJO PAPER CO LTD (JP)
API CORP (JP)
NATSUI JUNPEI (JP)
KOHAMA YUJI (JP)
SUGA MAMORU (JP)
AOSAKI YOSHIMUNE (JP)
International Classes:
B41M5/333
Domestic Patent References:
WO2003029017A12003-04-10
WO2002098674A12002-12-12
Foreign References:
JPS4945747A1974-05-01
JPS6313779A1988-01-21
JP2002326463A2002-11-12
JP2002326464A2002-11-12
JP2005125779A2005-05-19
JP2007245699A2007-09-27
JP2007210328A2007-08-23
GB2140449B1987-03-04
US4480052A1984-10-30
US4436920A1984-03-13
JPS6023922B21985-06-10
JPS57179836A1982-11-05
JPS60123556A1985-07-02
JPS60123557A1985-07-02
US2505470A1950-04-25
US2505471A1950-04-25
US2505489A1950-04-25
US2548366A1951-04-10
US2712507A1955-07-05
US2730456A1956-01-10
US2730457A1956-01-10
US3103404A1963-09-10
US3418250A1968-12-24
US4010038A1977-03-01
US2800457A1957-07-23
US2800458A1957-07-23
GB867797A1961-05-10
GB950443A1964-02-26
GB989264A1965-04-14
GB1091076A1967-11-15
US3103404A1963-09-10
JPS5857989A1983-04-06
JPS5220142B21977-06-01
JPS4911344B11974-03-16
JPS5048930A1975-05-01
Other References:
See also references of EP 2072274A4
Attorney, Agent or Firm:
TAKASHIMA, Hajime (1-1 Fushimimachi 4-chome,Chuo-ku, Osaka-shi, Osaka 44, JP)
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