Xerox Corporation

Thomas M Baretsky

David Mark Kerxhalli

Robert Michael Lofthus

Dusan G Lysy

James W Stevens

Mark A Scheuer

Russell B Rauch

Michael B Neary

Mohammad H Rahnavard

Rosario A Bracco

Mark Petrush

Ana Perez Tooker

Michael J Thomas

Anne Fitzpatrick

Peter J McGuire

Wayne A Morganti

Rod Stair

Document processing systems and duplex printing methods are presented in which sideto sideprocess magnification errors are compensated for by selective use of two raster output scanner clocks for latent image generation of images destined for first and second sides of a printed substrate, with the second clock speed being increased to compensate for substrate shrinkage due to fusing station heating for two-sided printing.

System and method for printing system process magnification adjustment

Method for printing pages within a booklet to improve the appearance of images on opposing pages includes sequencing images such that opposing pages are printed with the same print engine and/or fused the same number of times. Booklets include opposing pages having images fused the same number of times and/or printed with the same print engine as the image on the opposing page.

Face-to-face printing within booklet

A color registration method, system, and computer program product generally includes a plurality of imaging stations and one or more MOB (Marks-On Belt) sensors. An indication is initially provided to each imaging station among the imaging stations, which colors among a plurality of colors associated with said color registration system are active. Next, an arbitrary imaging station among the imaging stations can be assigned as a reference color. Thereafter, the arbitrary imaging station can be instructed to write an appropriate color pattern to replace marks associated with any imaging among imaging stations not enabled with the marks with respect to said reference color in order to thereby produce a resulting color ensemble that is detectable by one or more MOB sensors.

Active station adaptive image registration

A system and method for determining a color separation registration error in a multi-color printing system are provided. The system and method provide for instructing first and second color separations to mark a substrate with first and second fine-periodic-patch images to determine color separation registration error(s). The system and method further provide for determining whether at least an about half-period color separation registration error exists between the first and second color separations.

System and method for determining and correcting color separation registration errors in a multi-color printing system

A system and method for spatially matching the output of two imaging stations in an electro-photographic device by using a second order polynomial curve and a third order polynomial curve to approximate the non-linearity errors between the two imaging stations and using the second order polynomial curve and the third order polynomial curve to modify the frequency of a pixel clock.

System and method for reducing non-linearity errors between two imaging stations

A system and method to control imaging devices in a single-pass multi-color electrophotographic printing machine that includes a photoconductive member having a timing aperture, the photoconductive member moving along a path in the printing machine, and a plurality of imaging devices, each one of the plurality of imaging devices writing a latent image on the photoconductive member. The system further includes a sensor, located adjacent the photoconductive member, to sense the aperture in the photoconductive member as it passes the sensor and generate a signal indicative thereof and a control device and method that provides a timing signal for each of the plurality of imaging devices based on the signal generated by the sensor and a clock signal that is synchronous for all of the imaging devices.

Image registration control utilizing real time image synchronization

A system architecture for scanned non-linearity correction in a printer uses any raster output scanner having scanned non-linearity profile previously stored in memory from a test station installed with any pixel board. The pixel board includes a correction table register wherein the pixel board utilizes the scanned non-linearity profile of the raster output scanner to calculate the correction table register to correct for pixel misregistration.

System architecture for scan line non-linearity compensation in a ROS system

A method for and apparatus for creating partial gamut color images in a single pass. A plurality of latent discharged area images are formed using a single exposure. A first discharged area image is developed followed by recharging of the photoreceptor containing the images. The images are then subjected to a partial erase step followed by the development of a second discharged area image. All images formed subsequent to the first discharged image except for the last image are preceded by recharging and partial erase to thereby optimize development and cleaning fields.

Growing community of inventors

Fairport, NY, United States of America

Thomas M Baretsky