公开(公告)号：US3873355A

公开(公告)日：1975-03-25

申请号：US40358973

申请日：1973-10-04

Applicant: IBM

Inventor： QUEENER CARL A ,  RALSTON WILLIAM G ,  SMITH THOMAS C ,  WELSH JOSEPH P

IPC: G03G9/113 ,  G03G13/08 ,  G03G9/02

CPC classification number: G03G9/1137 ,  G03G9/1134 ,  G03G9/1135 ,  G03G9/1136 ,  Y10T428/2998 ,  Y10T428/3154 ,  Y10T428/31663

Abstract: An electrophotographic development carrier comprises core particles coated with a mixture of a fluoropolymer and a modifying material. When utilized with appropriate electroscopic toner materials, the carrier is effective in producing a relatively negative triboelectric charging of the toner particles while it obtains a relatively positive charge. The relatively positive triboelectric characteristic is obtained by curing the coated particles through heating at a temperature less than about 700*F.

Abstract translation: 电子照相显影载体包括用氟聚合物和改性材料的混合物涂覆的芯颗粒。 当与适当的电致调色剂材料一起使用时，载体在获得相对正电荷的同时有效地产生调色剂颗粒的相对负的摩擦带电。 通过在小于约700°F的温度下加热固化涂覆的颗粒，获得相对正的摩擦电特性。

公开(公告)号：US3873356A

公开(公告)日：1975-03-25

申请号：US40369173

申请日：1973-10-04

Applicant: IBM

Inventor： QUEENER CARL A ,  RALSTON WILLIAM G ,  SMITH THOMAS C ,  WELSH JOSEPH P

IPC: G03G9/113 ,  G03G13/08 ,  G03G9/02

CPC classification number: G03G9/1135 ,  G03G9/1134 ,  G03G9/1136 ,  G03G9/1137 ,  Y10T428/2998 ,  Y10T428/3154

Abstract: An electrophotographic development carrier comprises core particles coated with a mixture of a fluoropolymer and a modifying material. When utilized with appropriate electroscopic toner materials, the carrier is effective in producing a relatively negative triboelectric charging of the toner particles while it obtains a relatively positive charge. The relatively positive triboelectric characteristic is obtained by curing the coated particles through heating at a temperature less than about 700* F.

Abstract translation: 电子照相显影载体包括用氟聚合物和改性材料的混合物涂覆的芯颗粒。 当与适当的电致调色剂材料一起使用时，载体在获得相对正电荷的同时有效地产生调色剂颗粒的相对负的摩擦带电。 通过在小于约700°F的温度下加热固化涂覆的颗粒，获得相对正的摩擦电特性。

公开(公告)号：CA2142378A1

公开(公告)日：1995-08-15

申请号：CA2142378

申请日：1995-02-13

Applicant: IBM

Inventor： CURLEY CRAIG D ,  SMITH THOMAS C ,  YESKEL FILIP J

IPC: B41J29/46 ,  G06T1/00 ,  G06T7/00 ,  H04N1/00

Abstract: A document imaging system includes means whereby a large number of anomalous condition indicators or flags that define anomalous conditions that may occur as a result of the operation of a document scanner and/or document processor. A computationally efficient subset of flags and flag combinations is defined, and these subsets of flags and flag combinations (system states) are related to a quantitative measure of the quality (degree of suspiciousness) of the related document images, the documents themselves, and units of work that contain a plurality of documents. The machine computation of quality is compared to a human perception of quality, and computational input parameters are adjusted to improve the match of computational quality to the human quality perception, thus teaching the machine to make proper determinations of image and document quality.

公开(公告)号：CA964512A

公开(公告)日：1975-03-18

申请号：CA133097

申请日：1972-01-25

Applicant: IBM

Inventor： QUEENER CARL A ,  RALSTON WILLIAM G ,  SMITH THOMAS C ,  WELSH JOSEPH P

IPC: G03G9/113

Abstract: This is an electrophotographic process comprising the step of contacting a latent electrostatic image with a developer comprising carrier and toner. The carrier is a core coated with a continuous film of a fluoropolymer and a modifying resin. This carrier has a positive triboelectric charge with respect to the toner. This positive charge is obtained by curing the coated carrier at a temperature less than 700 DEG F.