Xerox Corporation

Michael Sanchez

Robert C U Yu

Huoy-Jen Yuh

John S Chambers

John Stephen Facci

Helen R Cherniack

Harold F Hammond

Cindy C Chen

Rachael L McGrath

Yongda Chen

Abukar H Wehelie

Mark Allen Sixbey

Rachael L Mc Grath

A 4&#xd7;4 LUT comprises a K to K LUT merged with a CMYK to CMYK LUT with values ranging from [0, 0, 0, 0] to [0, 0, 0, 255], said 4&#xd7;4 LUT written to a known file format. A method for creating 4&#xd7;4 look up tables (LUTs) uses the source and destination ICC profiles. A K to K LUT is built, a CMYK to CMYK LUT is built, the K to K LUT is merged with the CMYK to CMYK LUT, and the resulting LUT is written to a known file format. Such a process is important since it solves the issue of preserving K in a CMYK to CMYK transform while adding the performance improvement of a 4&#xd7;4 LUT.

Method of creating 4x4 LUTs using a source and destination ICC profile

Mapping an input color space into a colorimetric subspace can generate a target colorimetry space. Initial device color values can be used to generate an initial reference colorimetry space. A penalty error between the target colorimetry space and the reference colorimetry space can be minimized by generating a next reference colorimetry space based on subsequent device colors.

Color reproduction error minimization method and device

A charge transport layer material for a photoreceptor includes at least a polycarbonate polymer binder having a number average molecular weight of not less than 35,000, at least one charge transport material, polytetrafluoroethylene particle aggregates having an average size of less than about 1.5 microns and a fluorine-containing polymeric surfactant dispersed in a solvent mixture of at least tetrahydrofuran and toluene. The dispersion is able to form a uniform and stable material ideal for use in forming a charge transport layer of a photoreceptor. The resultant charge transport layer exhibits excellent wear resistance against contact with an AC bias charging roll, excellent electrical performance, and delivers superior print quality.

Wear resistant charge transport layer with enhanced toner transfer efficiency, containing polytetrafluoroethylene particles

A charge transport layer material for a photoreceptor includes at least a polycarbonate polymer, at least one charge transport material, polytetrafluoroethylene particle aggregates having an average size of less than about 1.5 microns, hydrophobic silica and a fluorine-containing polymeric surfactant dispersed in a solvent. The presence of the hydrophobic silica enables the dispersion to have superior stability by preventing settling of the PTFE particles. A resulting charge transport layer produced from the dispersion exhibits excellent wear resistance against contact with an AC bias charging roll, excellent electrical performance, and delivers superior print quality.

Stable charge transport layer dispersion containing polytetrafluoroethylene particles and hydrophobic silica

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Rochester, NY, United States of America

Michael Sanchez