Thermal imaging method
    4.
    发明授权
    Thermal imaging method 失效
    热成像法

    公开(公告)号:US5192645A

    公开(公告)日:1993-03-09

    申请号:US729420

    申请日:1991-07-12

    IPC分类号: B41M5/323

    摘要: A thermal imaging method for forming color images is provided which employs as the color image-forming material, a colorless precursor of a preformed image dye possessing at least one thermal protecting group that undergoes fragmentation upon heating and at least one leaving group that undergoes irreversible elimination upon heating, said protecting and leaving groups maintaining the precursor in its colorless form until heat is applied to effect removal of these groups whereby the precursor is converted to an image dye.

    摘要翻译: 提供了用于形成彩色图像的热成像方法,其使用成像材料作为预成形图像染料的无色前体,其具有至少一个在加热时经历碎裂的热保护基团和至少一个经历不可逆消除的离去基团 在加热时,所述保护和离去基团将前体保持其无色形式,直到施加热量以实现这些基团的去除,由此将前体转化为图像染料。

    Xanthene compounds
    5.
    发明授权
    Xanthene compounds 失效
    呫吨化合物

    公开(公告)号:US4307017A

    公开(公告)日:1981-12-22

    申请号:US194463

    申请日:1980-10-06

    摘要: The present invention is concerned with novel xanthene compounds of the formulae ##STR1## and ##STR2## wherein each R.sup.1 the same or different is alkyl or benzyl; each R.sup.2 the same or different is an electron-withdrawing group having a positive sigma value greater than 0.6; R.sup.3 is hydrogen or alkyl; R.sup.4 is alkyl; and n is 0 or 1, said R.sup.2 group being ortho, meta or para to said N atom. The subject compounds are useful as light-screening dyes in photographic products and processes.

    摘要翻译: 本发明涉及式(I)和(IMA)(II)的新型呫吨化合物,其中每个R 1相同或不同的是烷基或苄基; 每个R2相同或不同的是具有大于0.6的正σ值的吸电子基团; R3是氢或烷基; R4是烷基; 并且n为0或1,所述R 2基团为所述N原子的邻位,间位或对位。 本发明化合物可用作照相产品和方法中的遮光染料。

    Xanthene compounds
    6.
    发明授权
    Xanthene compounds 失效
    呫吨化合物

    公开(公告)号:US4429142A

    公开(公告)日:1984-01-31

    申请号:US281981

    申请日:1981-07-10

    摘要: In one embodiment, the present invention is concerned with novel xanthene compounds selected from those of the formulae ##STR1## wherein each R.sup.1 the same or different is alkyl, each R.sup.2 the same or different is an electron-withdrawing group having a positive sigma value greater than 0.6, X is ##STR2## wherein R.sup.3 is alkyl, Y is an electron-withdrawing group, n is 0 or 1 and A is an anion. In another embodiment, the present invention is concerned with photographic products and processes employing these xanthene compounds, e.g., as photographic light-screening dyes.

    摘要翻译: 在一个实施方案中,本发明涉及选自式“IMAGE”和“IMAGE”的那些的新型呫吨化合物,其中每个R 1相同或不同的是烷基,每个R 2相同或不同的是具有吸电子基团的吸电子基团 正σ值大于0.6,X为其中R3为烷基,Y为吸电子基团,n为0或1,A为阴离子。 在另一个实施方案中,本发明涉及使用这些呫吨化合物的照相产品和方法,例如作为照相照相染色剂。

    Novel xanthene compounds and photographic products and processes
employing the same
    7.
    发明授权
    Novel xanthene compounds and photographic products and processes employing the same 失效
    新型呫吨化合物和摄影产品及其采用的方法

    公开(公告)号:US4304834A

    公开(公告)日:1981-12-08

    申请号:US169834

    申请日:1980-07-17

    摘要: In one embodiment, the present invention is concerned with novel xanthene compounds selected from those of the formulae ##STR1## wherein each R.sup.1 the same or different is alkyl, each R.sup.2 the same or different is an electron-withdrawing group having a positive sigma value greater than 0.6, X is ##STR2## wherein R.sup.3 is alkyl, Y is an electron-withdrawing group, n is 0 or 1 and A is an anion. In another embodiment, the present invention is concerned with photographic products and processes employing these xanthene compounds, e.g., as photographic light-screening dyes.

    摘要翻译: 在一个实施方案中,本发明涉及选自式“IMAGE”和“IMAGE”的那些的新型呫吨化合物,其中每个R 1相同或不同的是烷基,每个R 2相同或不同的是具有吸电子基团的吸电子基团 正σ值大于0.6,X为其中R3为烷基,Y为吸电子基团,n为0或1,A为阴离子。 在另一个实施方案中,本发明涉及使用这些呫吨化合物的照相产品和方法,例如作为照相照相染色剂。

    Photographic products and processes with a pH sensitive xanthene light
screening dye
    9.
    发明授权
    Photographic products and processes with a pH sensitive xanthene light screening dye 失效
    摄影产品和工艺与pH敏感的呫吨光筛选染料

    公开(公告)号:US4345017A

    公开(公告)日:1982-08-17

    申请号:US194468

    申请日:1980-10-06

    摘要: The present invention is concerned with photographic products and processes employing certain pH-sensitive xanthene compounds as light-screening dyes, which compounds may be represented by the formulae ##STR1## wherein A and A', the same or different, are selected from ##STR2## each R is hydrogen or an electron-withdrawing group; each R.sup.1 is hydrogen or alkyl; each R.sup.2 is hydrogen, alkyl or an electron-withdrawing group; R.sup.3 is hydrogen or alkyl; R.sup.4 is alkyl; and n is 0 or 1 and which compounds in their colored, i.e., ring-opened form may be represented by the formulae ##STR3## wherein A, A', R.sup.3, R.sup.4 and n have the same meaning given above and Z is an anion.

    摘要翻译: 本发明涉及使用某些pH敏感呫吨化合物作为遮光染料的照相产品和方法,该化合物可以由其中A和A'的式(I)和(II)表示, 相同或不同,选自,每个R是氢或吸电子基团; 每个R 1是氢或烷基; 每个R 2是氢,烷基或吸电子基团; R3是氢或烷基; R4是烷基; 其中A,A',R 3,R 4和n具有如下的化学式:其中A,A',R 3,R 4和n具有 上述同样的含义,Z是阴离子。