Electrophotographic recording elements containing titanyl phthalocyanine
pigments and their preparation
    3.
    发明授权
    Electrophotographic recording elements containing titanyl phthalocyanine pigments and their preparation 失效
    含有钛酸橙色素的电子记录记录元素及其制备

    公开(公告)号:US5055368A

    公开(公告)日:1991-10-08

    申请号:US485114

    申请日:1990-02-23

    CPC分类号: G03G5/0696 C09B67/0002

    摘要: An electrophotographic recording element having a layer formed from a liquid composition comprising polymeric binder and dispersed photoconductive titanyl phthalocyanine particles. The titanyl phthalocyanine particles have a particle size up to about 0.2 micrometer and are characterized by certain X-ray diffraction characteristics and the layers are characterized by certain spectral absorption ranges. The coating composition comprises finely-divided photoconductive titanyl phthalocyanine particles dispersed in a solvent solution of polymeric binder and is prepared by the steps of (1) milling a titanyl phthalocyanine pigment with milling media comprising inorganic salt and non-conducting particles under shear conditions in the substantial absence of the solvent to provide pigment having a particle size up to 0.2 micrometer, (2) continuing the milling at higher shear at a temperature up to about 50.degree. C. to achieve a perceptible color change of the pigment particles, (3) rapidly increasing the temperature of the milled pigment by at least 10.degree. C., (4) separating the milled pigment from the milling media and (5) mixing the milled pigment with the solvent solution of polymeric binder to form the coating composition.

    Electrically photosensitive materials and elements for
photoelectrophoretic imaging processes
    4.
    发明授权
    Electrically photosensitive materials and elements for photoelectrophoretic imaging processes 失效
    用于光电泳成像过程的电光敏材料和元件

    公开(公告)号:US4299894A

    公开(公告)日:1981-11-10

    申请号:US161706

    申请日:1980-06-23

    IPC分类号: G03G17/04 G03G5/06

    CPC分类号: G03G17/04

    摘要: Electrically photosensitive materials and elements comprising an electrically photosensitive compound of the structure: ##STR1## wherein: n represents zero, 1 or 2;Y represents 0 or S;Z represents 0 or NR in which R represents hydrogen, alkyl, aryl or aralkyl;R.sup.1, R.sup.2 and R.sup.3, which are the same or different, represent hydrogen, alkoxy, hydroxy, alkyl, aryl, alkylcarboxy or arylcarboxy; or R.sup.1 and R.sup.3 taken together with the carbon atoms to which they are attached provide sufficient atoms to complete a carbocyclic ring of 6-14 carbon atoms;R.sup.4 represents hydrogen or cyano; andA represents a nitrogen containing basic heterocyclic nucleus of the type used in cyanine dyes are useful in photoelectrophoretic imaging processes.

    摘要翻译: 电感光材料和元件,其包含以下结构的电光敏化合物:其中:n表示0,1或2; Y表示0或S; Z表示0或NR,其中R表示氢,烷基,芳基或芳烷基; R 1,R 2和R 3相同或不同,表示氢,烷氧基,羟基,烷基,芳基,烷基羧基或芳基羧基; 或者R 1和R 3与它们所连接的碳原子一起提供足够的原子以完成6-14个碳原子的碳环; R4代表氢或氰基; 并且A代表用于花青染料的类型的含氮碱性杂环核可用于光电泳成像过程。