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Title:
HEAT-SENSITIVE RECORDING MEDIUM DISPLAYING GOLD METAL TONE, AND/OR HEAT-SENSITIVE RECORDING MEDIUM DISPLAYING TWO DIFFERENT COLOR TONES
Document Type and Number:
WIPO Patent Application WO/2014/181745
Kind Code:
A1
Abstract:
The main purpose of the present invention is to provide: a heat-sensitive recording medium that utilizes a chromogenic reaction between a dye precursor and a developer, wherein a colored image is tinged with a metallic luster, and a gold metal tone with a vivid appearance is exhibited; or a heat-sensitive, wherein a yellowish or gold metal colored tone and a colored tone different than the yellowish or gold metal colored are displayed, the color optical density in each of the colored tones is high, and a recording part has excellent color separation properties. The heat-sensitive recording medium is provided with a heat-sensitive recording layer containing a dye precursor and a developer on a substrate. The dye precursor provides a yellowish tone. (a) The substrate has a metallic luster, and provides a metallic luster to the surface of a base material that does not have a metallic luster, and/or, (b) the dye precursor that provides the yellowish tone is a first dye precursor, and, in addition, the heat-sensitive recording medium contains a second dye precursor that provides a different tone than that of the first dye precursor, and the first dye precursor is a compound having a specific pyridine skeleton. The second dye precursor (b1) has the form of fine composite particles containing the second dye precursor and a polymer compound, or (b2) has a melting point of not less than 200°C.

Inventors:
YONEDA YOSHIHIKO (JP)
OSHISAKA CHIEKO (JP)
TAKEMURA TAKASHI (JP)
MURAI TOHRU (JP)
Application Number:
PCT/JP2014/062042
Publication Date:
November 13, 2014
Filing Date:
May 01, 2014
Export Citation:
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Assignee:
OJI HOLDINGS CORP (JP)
International Classes:
B41M5/323; B41M5/28; B41M5/30; C09B57/00
Domestic Patent References:
WO2013049229A12013-04-04
Foreign References:
JPH10157289A1998-06-16
JP2000052659A2000-02-22
JPH10250237A1998-09-22
JPH0811467A1996-01-16
JP2002321461A2002-11-05
JP2008195043A2008-08-28
JP2005225222A2005-08-25
JPH06247043A1994-09-06
JP2004195743A2004-07-15
JPH02206585A1990-08-16
JPH06297846A1994-10-25
JPH05185715A1993-07-27
JPH05193254A1993-08-03
JPH05270126A1993-10-19
JP2001105744A2001-04-17
JPS60244594A1985-12-04
JPH09263057A1997-10-07
JP2000158822A2000-06-13
JPS58177392A1983-10-18
Other References:
See also references of EP 2995466A4
Attorney, Agent or Firm:
SAEGUSA & PARTNERS (JP)
Patent business corporation 3 Edakuni [Hajime] patent firm (JP)
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