Photoconductive elements having a polymeric barrier layer
    1.
    发明授权
    Photoconductive elements having a polymeric barrier layer 失效
    具有聚合物阻挡层的光导元件

    公开(公告)号:US06866977B2

    公开(公告)日:2005-03-15

    申请号:US10243702

    申请日:2002-09-14

    摘要: Disclosed are photoconductive elements including a conductive support, e.g., an electrically conductive film, drum, or belt, on which a negatively chargeable photoconductive layer is disposed. An electrical barrier layer is disposed between the conductive support and the photoconductive layer. The barrier layer provides a high energy barrier to the injection of positive charges, but transports electrons under an applied electric field. In embodiments, the barrier layer can transport charge by electronic mechanisms, and, is not substantially affected by humidity changes. The barrier layer includes a polyamide-co-imide having covalently bonded as repeat units in the polymer chain, aromatic tetracarbonylbisimide groups of the formula: wherein Ar1 and Ar2 respectively represent tetravalent or trivalent aromatic groups of 6 to about 20 carbon atoms, and X is O, C(CF3)2, S═O or SO2. The amount of aromatic tetracarbonylbisimide content in the polymer is selected such that the barrier layer can be coated onto the support as a relatively thick layer, which provides for enhanced performance as a photoconductor when used in an electrophotographic process.

    摘要翻译: 公开了包括导电性支持体(例如,导电膜,鼓或带)的光电导元件,其上设置有带负电的光导电层。 电阻挡层设置在导电支撑体和光电导层之间。 阻挡层为注入正电荷提供了高能量势垒,但在施加的电场下传输电子。 在实施例中,阻挡层可以通过电子机构输送电荷,并且基本上不受湿度变化的影响。 阻挡层包括在聚合物链中具有作为重复单元共价键合的聚酰胺 - 共 - 酰亚胺,下式的芳族四羰基双酰亚胺基团:其中Ar 1和Ar 2分别表示6至约20的四价或三价芳族基团 碳原子,X是O,C(CF 3)2,S = O或SO 2。 选择聚合物中芳族四羰基二酰亚胺含量的量使得阻挡层可以涂覆在载体上作为相对较厚的层,当用于电子照相方法时,这提供了作为光电导体的增强的性能。

    Lubricating layer in photographic elements
    3.
    发明授权
    Lubricating layer in photographic elements 有权
    摄影元素中的润滑层

    公开(公告)号:US06573222B1

    公开(公告)日:2003-06-03

    申请号:US09568835

    申请日:2000-05-11

    IPC分类号: C10M16100

    摘要: The present invention is an imaging element which includes a support, at least one imaging layer superposed on the support and a protective topcoat superposed farthest from the support. The topcoat includes a binder and lubricant droplets. The lubricant droplets are composed of a lubricant and a water soluble polymer containing heterocyclic aromatic nitrogen groups wherein the droplets are surrounded by a particulate stabilizer. The present invention is also directed to the lubricant droplets.

    摘要翻译: 本发明是一种成像元件,其包括支撑体,叠置在支撑体上的至少一个成像层和与支撑体最远重叠的保护面漆。 面漆包括粘合剂和润滑剂液滴。 润滑剂液滴由润滑剂和含有杂环芳族氮基团的水溶性聚合物组成,其中液滴被颗粒稳定剂包围。 本发明还涉及润滑剂液滴。

    Toner image pressure transfer method and toner useful therefor
    4.
    发明授权
    Toner image pressure transfer method and toner useful therefor 失效
    调色剂图像压力转印方法和碳粉有用

    公开(公告)号:US5162189A

    公开(公告)日:1992-11-10

    申请号:US723590

    申请日:1991-07-01

    IPC分类号: B01J13/06 G03G9/087 G03G9/093

    摘要: Pressure-sensitive, heat-fusible, encapsulated toner particles are provided which have very uniform size and physical characteristics. A method for making the particles is provided wherein a latex copolymer functions as a stabilizer controlling particle size of the core composition of the toner particles. The latex copolymer becomes the shell composition thereof. The particles are particularly useful in a process for transferring a toned image comprised of such particles from a photoconductor to a receiver.

    摘要翻译: 提供了具有非常均匀的尺寸和物理特性的压敏的,易熔融的包封的调色剂颗粒。 提供了制备颗粒的方法,其中胶乳共聚物用作控制调色剂颗粒的芯组合物的颗粒尺寸的稳定剂。 胶乳共聚物成为其壳组合物。 该颗粒在用于将由这种颗粒组成的调色图像从光电导体转印到接收器的过程中特别有用。

    Process for forming cocrystals containing chlorine-free titanyl phthalocyanines and low concentration of titanyl fluorophthalocyanine using organic milling aid
    5.
    发明授权
    Process for forming cocrystals containing chlorine-free titanyl phthalocyanines and low concentration of titanyl fluorophthalocyanine using organic milling aid 失效
    使用有机研磨助剂形成含有无氯氧钛酞菁和低浓度氧钛酞菁的共晶体的方法

    公开(公告)号:US06949139B2

    公开(公告)日:2005-09-27

    申请号:US10655289

    申请日:2003-09-04

    IPC分类号: C09B67/04 G03G5/06 C09B67/50

    CPC分类号: C09B67/0002 G03G5/0696

    摘要: In a process for forming an amorphous pigment mixture consisting essentially of TiOPc and TiOFPc and containing more than about 75 weight percent of TiOPc, a mixture of crude crystalline TiOPc and TiOFPc pigments in a weight ratio of at least 75:25 TiOPc:TiOFPc is combined with at least about 5 wt. %, based on the total weight of TiOPc and TiOFPc, of an organic milling aid. The mixture is treated under conditions effective to form a substantially amorphous pigment mixture of TiOPc and TiOFPc. The organic milling aid can be separated from the substantially amorphous pigment mixture, which can be converted to a nanoparticulate cocrystalline TiOPc/TiOFPc composition.

    摘要翻译: 在形成基本上由TiOPc和TiOFPc并且含有大于约75重量%的TiOPc的非晶颜料混合物的方法中,以至少75:25的TiOPc:TiOFPc的重量比的粗结晶TiOPc和TiOFPc颜料的混合物组合 至少约5wt。 %,基于TiOPc和TiOFPc的总重量的有机研磨助剂。 在有效形成TiOPc和TiOFPc的基本上无定形的颜料混合物的条件下处理该混合物。 有机研磨助剂可以与基本上无定形的颜料混合物分离,其可以转化成纳米颗粒共结晶TiOPc / TiOFPc组合物。

    Photoconductive elements having a polymeric barrier layer
    6.
    发明授权
    Photoconductive elements having a polymeric barrier layer 有权
    具有聚合物阻挡层的光导元件

    公开(公告)号:US06593046B2

    公开(公告)日:2003-07-15

    申请号:US09954907

    申请日:2001-09-18

    IPC分类号: G03G510

    摘要: Disclosed are photoconductive elements including a conductive support, e.g., an electrically conductive film, drum, or belt, on which a negatively chargeable photoconductive layer is disposed. An electrical barrier layer is disposed between the conductive support and the photoconductive layer. The barrier layer provides a high energy barrier to the injection of positive charges, but transports electrons under an applied electric field. In embodiments, the barrier layer can transport charge by electronic, or both electronic and ionic mechanisms, and, is not substantially affected by humidity changes. The barrier layer includes a polyester-co-imides, polyesterionomer-co-imides, or polyamide-co-imides having covalently bonded as repeat units in the polymer chain, aromatic tetracarbonylbisimide groups of the formula: wherein Ar1 and Ar2 respectively represent tetravalent or trivalent aromatic groups of 6 to about 20 carbon atoms, and X is O, C(CF3)2, S═O or SO2.

    摘要翻译: 公开了包括导电性支持体(例如,导电膜,鼓或带)的光电导元件,其上设置有带负电的光导电层。 电阻挡层设置在导电支撑体和光电导层之间。 阻挡层为注入正电荷提供了高能量势垒,但在施加的电场下传输电子。 在实施例中,阻挡层可以通过电子或电子和离子机制两者传输电荷,并且基本上不受湿度变化的影响。 阻挡层包括在聚合物链中共价键合作为重复单元的聚酯 - 共 - 酰亚胺,聚酯型聚异氰酸酯 - 共 - 酰亚胺或聚酰胺 - 共 - 酰亚胺,其中Ar 1和Ar 2分别表示四价或三价的芳族四羰基二酰亚胺基团 6至约20个碳原子的芳基,X是O,C(CF 3)2,S = O或SO 2。

    Method of fusing toner
    8.
    发明授权
    Method of fusing toner 失效
    定影调色剂的方法

    公开(公告)号:US5783348A

    公开(公告)日:1998-07-21

    申请号:US938879

    申请日:1997-09-26

    IPC分类号: G03G9/08 G03G13/20

    摘要: In the fusing of an electrostatographic toner pattern to a receiver sheet such as paper or film, a selected degree of gloss or texture is imparted to the image by the use of thermoplastic toner particles having a surface energy less than 35 mN/m at 150.degree. C. and a belt fusing system having a belt of a surface texture adapted to provide the selected degree of gloss or texture to the fused image, the belt having a surface energy of 35 to 70 mN/m at 150.degree. C. and at least 5 mN/m at 150.degree. C. greater than that of the toner particles.

    摘要翻译: 在将静电色调调色剂图案熔合到诸如纸或薄膜的接收片上时,通过使用表面能在150度时的表面能小于35mN / m的热塑性调色剂颗粒,赋予图像所选择的光泽度或纹理程度。 以及带式熔融系统,其具有表面纹理带,其适于提供所选择的光泽度或纹理程度的融合图像,所述带在150℃下具有35至70mN / m的表面能,并且至少 在150℃下比调色剂颗粒大5mN / m。

    Polymer blends and toner compositions comprising same
    9.
    发明授权
    Polymer blends and toner compositions comprising same 失效
    聚合物共混物和包含它们的调色剂组合物

    公开(公告)号:US5462829A

    公开(公告)日:1995-10-31

    申请号:US171488

    申请日:1993-12-21

    IPC分类号: G03G9/087

    摘要: Polyblends are provided which comprise (a) a major amount of a linear or branched matrix polymer comprising a polyester having a number average molecular weight of at least 2000 or a vinyl polymer having a number average molecular weight of at least 3000 and (b) a minor amount of a block copolymer of AB or ABA type wherein A is a homopolymer block which is compatible with the matrix polymer and B is a homopolymer block which is incompatible with the matrix polymer, the blend having a fusing temperature of not more than about 250.degree. C., a melt viscosity of from about 4.times.10.sup.2 to 5.times.10.sup.4 poise as measured on a Rheometrics Dynamic Analyzer at 150.degree. C. and a frequency of 1 rad/sec and a melt elasticity of from about 1.5.times.10.sup.2 to 4.times.10.sup.4 dynes/cm.sup.2.The polyblends are useful in the preparation of electrostatographic toner compositions used in electrographic processes.

    摘要翻译: 提供了包含(a)主要量的包含数均分子量至少为2000的聚酯或数均分子量至少为3000的乙烯基聚合物的主要量的直链或支链基质聚合物和(b) 少量的AB或ABA型嵌段共聚物,其中A是与基质聚合物相容的均聚物嵌段,B是与基质聚合物不相容的均聚物嵌段,该共混物的熔点温度不超过约250 ℃,熔体粘度为约4×10 2至5×10 4泊,在Rheometrics动态分析仪上在150℃和1弧度/秒的频率和约1.5×10 2至4×10 4达因/ cm 2的熔体弹性下测量。 聚合共混物可用于制备用于电印方法的静电色调组合物。

    Toner image pressure transfer method and toner useful therefor
    10.
    发明授权
    Toner image pressure transfer method and toner useful therefor 失效
    调色剂图像压力转印方法和碳粉有用

    公开(公告)号:US5049469A

    公开(公告)日:1991-09-17

    申请号:US457674

    申请日:1989-12-27

    IPC分类号: B01J13/06 G03G9/087 G03G9/093

    摘要: Pressure-sensitive, heat-fusible, encapsulated toner particles are provided which have very uniform size and physical characteristics. A method for making the particles is provided wherein a latex copolymer functions as a stabilizer controlling particle size of the core composition of the toner particles. The latex copolymer becomes the shell composition thereof. The particles are particularly useful in a processe for transferring a toned image comprised of such particles from a photoconductor to a receiver.

    摘要翻译: 提供了具有非常均匀的尺寸和物理特性的压敏的,易熔融的包封的调色剂颗粒。 提供了制备颗粒的方法,其中胶乳共聚物用作控制调色剂颗粒的芯组合物的颗粒尺寸的稳定剂。 胶乳共聚物成为其壳组合物。 颗粒在用于将由这样的颗粒组成的调色图像从感光体转印到接收器的处理中是特别有用的。