公开(公告)号：US4963990A

公开(公告)日：1990-10-16

申请号：US363838

申请日：1989-06-09

申请人： Thomas A. Henderson ,  John F. Knapp

发明人： Thomas A. Henderson ,  John F. Knapp

IPC分类号： B41J2/52 ,  G03G15/00 ,  G03G15/04 ,  H04N1/40 ,  H04N1/405

CPC分类号： H04N1/40087

摘要： A method of obtaining continuous tone reproductions in a raster scanned digital image having a given number of pixels for each halftone cell of the digital image and using four modulating levels for each pixel of the output scanner including a black and a white pixel level, the method comprising the steps of: choosing two reflectance gray levels intermediate the black and white levels to combine with the black and white pixel levels for providing quadruples, four numbers specifying the number of each kind of pixel in the halftone cell, for modulating the output scanner, determining a total number of average halftone cell gray levels to be available for the digital image, creating a list of quadruples that describe all possible average halftone cell grey levels available with the four modulating levels, and selecting a set of quadruplets from said list equal to a desired number of gray levels, said set of quadruplets selected to maximize the occurrence of black and white pixel levels in each halftone cell.

摘要翻译： 一种在数字图像的每个半色调单元具有给定数量的像素的光栅扫描数字图像中获得连续色调再现的方法，并且对包括黑色和白色像素级的输出扫描器的每个像素使用四个调制电平，该方法 包括以下步骤：选择黑白电平之间的两个反射灰度级与黑与白像素级结合以提供四倍，四个数字指定半色调单元中每种像素的数量，用于调制输出扫描器， 确定可用于数字图像的平均半色调单元灰度级的总数，创建描述四个调制级别可用的所有可能的平均半色调单元灰度级的四倍的列表，以及从所述列表中选择一组四元组等于 期望数量的灰度级，所述四组的所述组被选择以使黑白像素级别的出现最大化 每个半色调细胞。

公开(公告)号：US4634649A

公开(公告)日：1987-01-06

申请号：US713975

申请日：1985-03-20

申请人： John F. Knapp ,  Robert J. Gruber

发明人： John F. Knapp ,  Robert J. Gruber

IPC分类号： G03G9/087 ,  G03G9/10

CPC分类号： G03G9/08755

摘要： Disclosed is a two-component developer composition enabling smudge resistant images which is comprised of improved two-component contamination free developer composition comprised of (1) magnetite; (2) a polyester resin comprised of the polymeric esterification product of a dicarboxylic acid and a diol comprising a diphenol of the following formula ##STR1## wherein R is selected from substituted and unsubstituted alkylene radicals of from about 2 to about 12 carbon atoms, alkylidene radicals of from 1 to 12 carbon atoms and cycloalkylidene radicals of from 3 to 12 carbon atoms; R' and R" are selected from substituted and unsubstituted alkylene radicals of from 2 to 12 carbon atoms, alkylene arylene radicals of from 8 to 12 carbon atoms and arylene radicals; X and X' are selected from hydrogen or any alkyl radical having from 1 to 4 carbon atoms; and each n is a number of from 0 (zero) to 4; and (3) carrier particles.

摘要翻译： 公开了一种双组分显影剂组合物，其具有防污图像，其包括由（1）磁铁矿组成的改进的双组分无污染显影剂组合物; （2）由二羧酸和二醇的聚合酯化产物组成的聚酯树脂，其包含下式的二酚：其中R选自取代和未取代的约2至约12个碳原子的亚烷基，亚烷基 1至12个碳原子的基团和3至12个碳原子的亚环烷基; R'和R“选自取代和未取代的2至12个碳原子的亚烷基，8至12个碳原子的亚烷基亚芳基和亚芳基; X和X'选自氢或任何具有1至4个碳原子的烷基; 并且每个n是从0（零）到4的数量; 和（3）载体颗粒。

公开(公告)号：US4578338A

公开(公告)日：1986-03-25

申请号：US645892

申请日：1984-08-31

申请人： Robert J. Gruber ,  Ronald J. Koch ,  John F. Knapp

发明人： Robert J. Gruber ,  Ronald J. Koch ,  John F. Knapp

IPC分类号： G03G9/087 ,  G03G9/08 ,  G03G9/09 ,  G03G9/097 ,  G03G13/08 ,  G03G13/20 ,  G03G15/20 ,  G03G13/14

CPC分类号： G03G13/20 ,  G03G13/08 ,  G03G9/0975 ,  G03G9/09758

摘要： An improved process for the development and fixing of electrostatic latent images which comprises (1) generating an electrostatic latent image on a photoconductive imaging member, (2) developing this image with a toner composition comprised of toner resin particles, pigment particles, and a wax component of a molecular weight of from about 500 to about 20,000, (3) transferring the developed image to a suitable substrate, and subsequently (4) fusing the transferred image with a compliant oil fuser roll, wherein the amount of fuser oil consumed is from about one microliter to about three microliters per page of developed image.

摘要翻译： 一种用于显影和固定静电潜像的改进方法，其包括（1）在光导成像构件上产生静电潜像，（2）用调色剂树脂颗粒，颜料颗粒和蜡组成的调色剂组合物显影该图像 分子量为约500至约20,000的组分，（3）将显影图像转印到合适的基底上，随后（4）用柔性油定影辊对转印的图像进行定影，其中消融的定影油的量来自 每页大约1微升到大约3微升的图像。

公开(公告)号：US4556624A

公开(公告)日：1985-12-03

申请号：US655381

申请日：1984-09-27

申请人： Robert J. Gruber ,  Ronald J. Koch ,  John F. Knapp ,  Steven B. Bolte

发明人： Robert J. Gruber ,  Ronald J. Koch ,  John F. Knapp ,  Steven B. Bolte

IPC分类号： G03G9/08 ,  G03G9/087 ,  G03G9/09 ,  G03G9/097 ,  G03G13/20 ,  G03G9/00

CPC分类号： G03G9/08782 ,  G03G9/08793 ,  G03G9/09741 ,  G03G9/09758

摘要： Disclosed are improved positively charged electrostatic toner compositions comprised of a polyblend mixture of a crosslinked copolymer composition, and a second polymer, pigment particles, a wax component of a molecular weight of from 500 to about 20,000, and a charge enhancing additive. These compositions are particularly useful in imaging systems wherein release oils, such as silicone, are not required.

摘要翻译： 公开了改进的带正电荷的静电调色剂组合物，其由交联共聚物组合物和第二聚合物，颜料颗粒，分子量为约500至约20,000的蜡组分和电荷增强添加剂的共混混合物组成。 这些组合物特别适用于其中不需要诸如硅氧烷的脱模油的成像系统。