Heat sensitive recording material
    25.
    发明授权
    Heat sensitive recording material 失效
    热敏记录材料

    公开(公告)号:US5466656A

    公开(公告)日:1995-11-14

    申请号:US310500

    申请日:1994-09-22

    IPC分类号: B41M5/327 B41M5/333 B41M5/30

    CPC分类号: B41M5/3336 B41M5/3275

    摘要: The present invention provides a heat sensitive recording material comprising a recording layer formed on a substrate and containing a colorless or light-colored basic dye and a color acceptor, the material being characterized in that the basic dye is 3-(N-ethyl-N-p-tolyl)amino-6-methyl-7-p-toluidinofluoran, the color acceptor is bis(3-allyl-4-hydroxyphenyl)sulfone and/or 4-hydroxy-4'-isopropoxydiphenylsulfone.

    摘要翻译: 本发明提供了一种热敏记录材料,其包括形成在基材上的含有无色或浅色碱性染料和着色受体的记录层,其特征在于碱性染料为3-(N-乙基-Np (3-烯丙基-4-羟基苯基)砜和/或4-羟基-4'-异丙氧基二苯基砜。

    Floating point digital to analog converter with bias to establish range
midpoint
    26.
    发明授权
    Floating point digital to analog converter with bias to establish range midpoint 失效
    浮点数字到模拟转换器,偏置建立范围中点

    公开(公告)号:US5021785A

    公开(公告)日:1991-06-04

    申请号:US463876

    申请日:1990-01-05

    IPC分类号: H03M1/70 H03M1/78

    CPC分类号: H03M1/70 H03M1/785

    摘要: A digital-to-analog converter converts digital data in the floating-point representation into an analog signal. The mantissa part of the digital data is first converted into a first analog signal by an R-2R resistor ladder network. The first analog signal thus obtained is directly supplied to another r-2r resistor ladder network to produce second analog signals whose values are 2.sup.-N (N=0, 1, 2, . . . ) magnifications of the first analog signal. And, one of the second analog signals is selectively outputted in accordance with the exponent part of the digital data. A data converter is also provided for converting digital data in the form of a fix-point number into floating point data.

    摘要翻译: 数模转换器将浮点表示中的数字数据转换为模拟信号。 数字数据的尾数部分首先通过R-2R电阻梯形网络转换为第一模拟信号。 如此获得的第一模拟信号被直接提供给另一个r-2r电阻梯形网络,以产生第二模拟信号,其值为第一模拟信号的2-N(N = 0,1,2 ...)倍率。 并且,根据数字数据的指数部分选择性地输出第二模拟信号之一。 还提供了一种数据转换器,用于将固定点数形式的数字数据转换为浮点数据。

    Multi-color heat sensitive recording material
    27.
    发明授权
    Multi-color heat sensitive recording material 失效
    多色热敏记录材料

    公开(公告)号:US4906604A

    公开(公告)日:1990-03-06

    申请号:US248703

    申请日:1988-09-23

    IPC分类号: B41M5/337 B41M5/34

    摘要: In a multi-color heat sensitive recording material comprising a substrate and two or more heat sensitive color-forming layers thereon capable of forming different colors from each other, at least one of the heat sensitive color-forming layers containing a leuco dye and an acidic substance, the recording material characterized in that at least one piperidine derivative represented by the formula [I] ##STR1## wherein R.sub.1 is C.sub.1.about.30 aliphatic group residue which may have C.sub.2.about.20 alkoxycarbonyl group, or C.sub.1.about.30 aliphatic group residue which has ether linkage and oxycarbonyl group; R.sub.2, R.sub.3, R.sub.4, R.sub.5 and X are each methyl group or hydrogen atom; and l is an integer of 1 to 6, is incorporated at the position where a decolorizing function can be effected against the color-forming system comprising a leuco dye and an acidic substance.

    Heat and light-sensitive recording materials with dialonium compound,
coupler, and heat fusible amidine or diamidine compound
    28.
    发明授权
    Heat and light-sensitive recording materials with dialonium compound, coupler, and heat fusible amidine or diamidine compound 失效
    热敏和光敏记录材料与二盐化合物,成色剂和热熔脒或脒化合物

    公开(公告)号:US4652512A

    公开(公告)日:1987-03-24

    申请号:US823561

    申请日:1986-01-29

    CPC分类号: G03C1/52 G03C1/615

    摘要: This invention provides a heat-sensitive recording material comprising a substrate and a heat-sensitive recording layer which is formed over the substrate and which contains a diazonium salt, a coupler and at least one of specific heat-fusible basic amidine and diamidine compounds in which the nitrogen atom(s) of ##STR1## moiety(moieties) has(have) a substituent and the nitrogen atom(s) or ##STR2## moiety(moieties) has(have) at least one substituent, the substituent being independently selected from the group consisting of phenyl, naphthyl, phenyl-C.sub.1 -C.sub.4 alkyl and naphthyl-C.sub.1 -C.sub.4 alkyl, each optionally substituted with C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, phenyloxy, nitro or halogen, and in which amidine compounds are other than formamidines. The heat-sensitive recording material is especially excellent in storage stability.

    摘要翻译: 本发明提供了一种热敏记录材料,其包括基材和热敏记录层,其形成在该基材上并且包含重氮盐,成色剂和至少一种比热溶性碱性脒和脒化合物,其中 部分(部分)的氮原子具有(具有)取代基并且氮原子或部分(部分)具有(具有)至少一个取代基,所述取代基独立地选自 苯基,萘基,苯基-C 1 -C 4烷基和萘基-C 1 -C 4烷基,各自任选被C 1 -C 4烷基,C 1 -C 4烷氧基,苯氧基,硝基或卤素取代,其中脒化合物不同于 甲脒 热敏记录材料的储存稳定性特别优异。