申请人:Fuji Photo Film Co., Ltd.
公开号:EP1466751A1
公开(公告)日:2004-10-13
(A) The invention discloses a thermosensitive recording material comprising: a support; and a thermosensitive recording layer formed on the support, the thermosensitive recording layer containing an electron-donating colorless dye and an electron-accepting compound which develops color upon a reaction with the electron-donating colorless dye, wherein the thermosensitive recording material satisfies at least one of the following conditions (1) to (3).
(1) an image density when thermal printing is performed from a side, of the support, having the thermosensitive recording layer with printing energy of 15.2 mJ/mm2 is 1.20 or more, and the thermosensitive recording material is used for a recording device having a printing speed of 10 cm/sec or more;
(2) the thermosensitive recording material contains a sensitizer comprising at least one compound selected from the group consisting of 2-benzyloxynaphthalene, dimethylbenzyloxalate, m-terphenyl, ethyleneglycol tolyl ether, p-benzyl biphenyl, 1,2-diphenoxymethyl benzene, diphenyl sulfone and 1,2-diphenoxy ethane, and the image density after the thermosensitive recording material is brought into contact with a heat source of 70°C for 5 seconds is 0.15 or less;
(3) the electron-accepting compound is a compound represented by the following Formula (1) Formula (1)R1-Ph-SO2R2 wherein R1 represents a hydroxyl group or an alkyl group, R2 represents -Ph, -NH-Ph, -Ph-OR3 or -NH-CO-NH-Ph, R3 represents an alkyl group, Ph represents a phenyl group and may be substituted with a substituent containing -SO2R2, and a volume-averaged grain size of the electron-donating colorless dye and electron-accepting compound is in a range of 0.5 to 1.0 µm.
(B) A thermosensitive recording material comprises a thermosensitive recording layer containing an electron-donating colorless dye, an electron-accepting compound which develops color upon a reaction with the electron-donating colorless dye and a sensitizer, wherein the thermosensitive recording material satisfies at least one of the following conditions (1) to (3).
(1) An image density when thermal printing is performed with a printing energy is 1.20 or more, and the thermosensitive recording material is used for a recording device having a printing speed of 10 cm/sec or more.
(2) An image density after the thermosensitive recording material is brought into contact with a heat source of 70°C for 5 seconds is 0.15 or less, and the sensitizer is 2-benzyloxynaphthalene or the like.
(3) the electron-accepting compound is a compound represented by R1-Ph-SO2R2 wherein R1 represents a hydroxyl group or an alkyl group, R2 represents -Ph, -NH-Ph, -Ph-OR3 or -NH-CO-NH-Ph, R3 represents an alkyl group, Ph represents a phenyl group and may be substituted with a substituent containing SO2R2, and a volume-averaged grain size is in a range of 0.5 to 1.0 µm.
(A) 本发明公开了一种热敏记录材料,包括:支撑物;和形成在支撑物上的热敏记录层,该热敏记录层含有电子捐赠无色染料和电子接受化合物,该电子接受化合物与电子捐赠无色染料反应后显色,其中热敏记录材料至少满足以下条件(1)至(3)中的一个。
(1) 当从具有热敏记录层的支撑物的一侧进行热打印时,打印能量为 15.2 mJ/mm2 的图像密度为 1.20 或以上,且热敏记录材料用于打印速度为 10 厘米/秒或以上的记录设备;
(2) 热敏记录材料含有敏化剂,该敏化剂包含至少一种选自以下组别的化合物:2-苄氧基萘、二甲基苄氧基萘、间三联苯、乙二醇对二甲苯醚、对苄基联苯、1,2-二苯氧基甲基苯、二苯砜和 1,2-二苯氧基乙烷,且热敏记录材料与 70°C 的热源接触 5 秒钟后的图像密度为 0.15 或更低;
(3) 电子接受化合物是由下式表示的化合物 式(1) 式(1)R1-Ph-SO2R2 其中 R1 代表羟基或烷基,R2 代表-Ph、-NH-Ph、-Ph-OR3 或-NH-CO-NH-Ph,R3 代表烷基,Ph 代表苯基并可被含有-SO2R2 的取代基取代,且电子氖型无色染料和电子接受化合物的体积平均粒度在 0.5至1.0微米。
(B) 一种热敏记录材料,它包括一个热敏记录层,该层含有一种电子致性无色染料、一种电子受体化合物,该化合物在与电子致性无色染料和敏化剂反应后显色,其中热敏记录材料至少满足下列条件(1)至(3)之一。
(1) 当使用打印能量进行热打印时,图像密度为 1.20 或以上,且热敏记录材料用于打印速度为 10 厘米/秒或以上的记录设备。
(2) 热敏记录材料与 70°C 的热源接触 5 秒后的图像密度为 0.15 或更低,且敏化剂为 2-苄氧基萘或类似物。
(3) 电子接受化合物是由 R1-Ph-SO2R2 所代表的化合物,其中 R1 代表羟基或烷基,R2 代表-Ph、-NH-Ph、-Ph-OR3 或-NH-CO-NH-Ph,R3 代表烷基,Ph 代表苯基并可被含有 SO2R2 的取代基取代,且体积平均粒度在 0.5 至 1.0 微米范围内。