专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

61. 发明专利

JPH10157309A THERMAL RECORDING MATERIAL 失效
公开(公告)号：JPH10157309A
公开(公告)日：1998-06-16
申请号：JP31813596
申请日：1996-11-28
申请人： MITSUBISHI PAPER MILLS LTD
发明人： MARUYAMA ATSUSHI , SANO HIDEKAZU
IPC分类号： B41M5/337 , B41M5/26 , B41M5/30 , B41M5/333
摘要： PROBLEM TO BE SOLVED: To obtain a thermal recording material having high sensibility, excellent oil resistance and plasticizer resistance, and high whiteness by adding at least one kind of sulfonyl hydrazone compound to be expressed by a specified formula as an electron acceptor compound to be contained in a thermal coloring layer. SOLUTION: A thermal recording layer is formed of a thermal recording material with which colored images obtained by heating are not decolored and preservation stability of recorded images is excellent, and contains an electron donor dye precursor and an electron acceptor compound. For the electron acceptor compound, at least one kind of sulfonyl hydrazone compound to be expressed by formulas I-III is added. In the formula, R1 -R3 represent a hydrogen atom, a halogen atom, an alkyl group, an alkoxy group, and aralkyl group, R4 represents an alkyl group, an alkenyl group, an aryl group. (m) is 0 or 1, (n) is an integer of 0 or 1-10, and when m=1, n=0 does not exist. Also, a carboxylic acid may form a metal salt.

62. 发明专利

JPH08132735A REVERSIBLE THERMAL RECORDING MATERIAL 失效
公开(公告)号：JPH08132735A
公开(公告)日：1996-05-28
申请号：JP27279694
申请日：1994-11-08
申请人： MITSUBISHI PAPER MILLS LTD
发明人： IIDA KAZUYUKI , SANO HIDEKAZU
IPC分类号： B41M5/337 , B41M5/26 , B41M5/30 , B41M5/333
摘要： PURPOSE: To form and erase an image good in contrast, in a reversible thermal recording material containing a reversible coupler generating a reversible hue change in a dye precursor by the difference in cooling speed after heating, by adding a specific compd. as an erasure accelerator. CONSTITUTION: In a reversible thermal recording material wherein a reversible thermal recording layer containing a colorless or light-colored dye precursor and a reversible coupler generating a reversible hue change in a dye precursor by the difference in cooling speed after heating is provided on a support, at least one kind of a specific compd. represented by general formula (wherein A is a heterocyclic ring having at least one nitrogen atom, R is a 1-12C divalent hydrocarbon group, X is a divalent group having at least one -CONH-bond but is not a mere urea bond, R is a 1-24C hydrocarbon group and h is 0 or 1) is added. By this constitution, the thermal recording material holding a stable image capable of being formed and erased in clear contrast is obtained.

63. 发明专利

JPH07164746A REVERSIBLE THERMAL RECORDING MATERIAL 失效
公开(公告)号：JPH07164746A
公开(公告)日：1995-06-27
申请号：JP31755593
申请日：1993-12-17
申请人： MITSUBISHI PAPER MILLS LTD
发明人： IIDA KAZUYUKI , MARUYAMA ATSUSHI , SANO HIDEKAZU
IPC分类号： B41M5/337 , B41M5/26 , B41M5/30 , B41M5/333
摘要： PURPOSE:To improve image contrast and enable the formation and erasure of an image by providing a reversible thermal recording layer containing an electron donating dye precursor and an electron acceptive compd. represented by a specific general formula on a support. CONSTITUTION:A reversible thermal recording material is formed by providing a reversible thermal recording layer containing a usually colorless or light- colored electron donating dye precursor and an electron acceptive compd. represented by formula (wherein n is an integer of 1-3, R is a 1-18C divalent hydrocarbon group, X is a divalent group containing at least one -CONH- bond and R is a 1-24C hydrocarbon group) on a support. As a concrete example of the electron acceptive compd., there is N-n-dodecyl-2-(p-hydroxyphenylthio) acetamide or N-n-octadecyl-2-(p-hydroxyphenylthio)acetamide.

你已经成功收藏专利！

检索式保存成功!

IPRDB