Dip coating process for producing electrophotographic composition layer having controlled thickness

    公开(公告)号:US07544382B2

    公开(公告)日:2009-06-09

    申请号:US11022210

    申请日:2004-12-21

    申请人: Michel F. Molaire

    发明人: Michel F. Molaire

    IPC分类号: C23C14/54 B05D1/18

    摘要: A method for controlling the thickness and uniformity of a dip coated layer, using a coating apparatus in a normal coating environment, includes the following steps: forming under normal coating conditions of ambient temperature and relative humidity a series of coated layers on a metal substrate having a thickness of at least about 500 microns, using variations in coating solution viscosity m, coating substrate withdrawal speed v, capillary number Ca, coating solution surface tension S, and boiling point bp (a correlative of evaporation rate)of the coating solution solvent, a coated layer including at least a portion of uniform thickness T(even) and, optionally, a portion of non-uniform thickness L (uneven); statistically analyzing measurements carried out on the series of coated layers and generating the constants, a, b, c, d, and e for Equations 2, 3, and 4: T(even)=a+b(m*v)   (Equation 2) L(uneven)=c+d*(v*bp)+e*(Ca*bp)   (Equation 3) v(even)=−c/bp*(d+e*m/S)   (Equation 4) using Equation 4, determining the coating speed v(even) producing the maximum thickness of a coated layer having a completely uniform thickness for a given set of coating solution characteristics; and using Equation 2, determining the thickness T(even) of the portion of the coated layer having uniform thickness for a given set of coating solution characteristics and the coating speed determined in step (c).

    Encapsulated toner compositions incorporating organic monomeric glasses
    6.
    发明申请
    Encapsulated toner compositions incorporating organic monomeric glasses 失效
    包含有机单体玻璃的包封调色剂组合物

    公开(公告)号:US20070292799A1

    公开(公告)日:2007-12-20

    申请号:US11453408

    申请日:2006-06-15

    申请人: Michel F. Molaire

    发明人: Michel F. Molaire

    IPC分类号: G03G9/093

    摘要: The present invention is an electrostatographic core shell toner which includes as a core material of at least two nonpolymeric compounds each independently corresponding to the structure (R1Y1)p[(Z1Y2)mR2Y3]nZ2Y4R3. M is zero or one, n is zero up to an integer at which said compound starts to become a polymer and p is an integer of from one to eight. Each of R1 and R3 is independently a monovalent aliphatic or cycloaliphatic hydrocarbon group an aromatic group or a multicyclic aromatic nucleus. Each of R2, Z1 and Z2 independently represent multivalent aliphatic or cycloaliphatic hydrocarbon groups or an aromatic group. Y1, Y2, Y3 and Y4 each independently represent one or more linking groups. The core material is surrounded by a shell that includes an amorphous matrix.

    摘要翻译: 本发明是一种静电核心壳调色剂,其包含作为至少两种非聚合化合物的核心材料,每种非聚合化合物各自独立地对应于结构(R 1,Y 1, [(Z 1)2 2 Y 4 3 3 3 M为0或1,n为0,直至所述化合物开始变成聚合物并且p为1至8的整数的整数。 R 1和R 3各自独立地是一价脂族或脂环族烃基,芳基或多环芳族核。 R 2,Z 1和Z 2各自独立地表示多价脂族或脂环族烃基或芳族基团。 Y 1,Y 2,Y 3和Y 4各自独立地表示一个或多个连接基团。 核心材料被包含无定形基质的壳包围。

    Process for forming cocrystals containing chlorine-free titanyl phthalocyanines and low concentration of titanyl fluorophthalocyanine using organic milling aid
    8.
    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
    9.
    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。

    Methods for preparing cocrystals of titanyl fluorophthalocyannes and
unsubstituted titanyl phthalocyanine, electrophotographic elements, and
titanyl phthalocyanine compositions
    10.
    发明授权
    Methods for preparing cocrystals of titanyl fluorophthalocyannes and unsubstituted titanyl phthalocyanine, electrophotographic elements, and titanyl phthalocyanine compositions 失效
    制备钛氧基酞菁和未取代的氧钛酞菁的共晶体的方法,电子照相元件和氧钛酞菁组合物

    公开(公告)号:US5766810A

    公开(公告)日:1998-06-16

    申请号:US734799

    申请日:1996-10-23

    IPC分类号: C09B67/22 G03G5/06

    CPC分类号: G03G5/0696 C09B67/0035

    摘要: Amorphous and cocrystallized unsubstituted titanyl phthalocyanine-titanyl fluorophthalocyanine compositions, preparation methods, and electrophotographic elements utilizing the compositions. The method has the steps of: admixing crude titanyl phthalocyanine and crude titanyl fluorophthalocyanine to provide a pigment mixture; increasing the amorphousness of the pigment mixture as determined by X-ray crystallography using X-radiation characteristic of Cu K.alpha. at a wavelength of 1.541 .ANG. of the Bragg angle 2.theta. to provide an amorphous pigment mixture; contacting the amorphous pigment mixture with a non-crystallizing solvent.

    摘要翻译: 无定形和共结晶的未取代的氧钛酞菁 - 钛氧基酞菁组合物,制备方法和使用该组合物的电子照相元件。 该方法具有以下步骤:将粗钛酞菁和粗钛氧基酞菁混合以提供颜料混合物; 通过X射线晶体学使用在布拉格角2θ的波长为1.541的CuKα的X射线特性来确定颜料混合物的非晶性,以提供无定形颜料混合物; 使非晶颜料混合物与非结晶溶剂接触。