Abstract: A method is provided of compensating for periodic non-uniformity in an electrophotographic printer with a rotatable imaging component, and a runout sensor for measuring the distance between a first reference point and the surface of the rotatable imaging component along a first reference axis. An image signal representing an image to be produced on a receiving member by the printer is received. The rotatable imaging component is rotated. While the rotatable imaging component is rotating, the distance for the rotatable component is measured using the runout sensor. A correction value corresponding to the measured distance is automatically determined using a processor. The image data corresponding to the measured distance are automatically adjusted with the correction value using the processor. Toner corresponding to the adjusted image data is deposited on the receiver using the rotatable imaging component.

Abstract: A method is provided of compensating for periodic non-uniformity in an electrophotographic (EP) printer with a rotatable imaging component, and a runout sensor for measuring the distance between a first reference point and the surface of the first component along a first reference axis. An image signal representing an image to be produced on a receiving member by the printer is received. The component is rotated. While it is rotating, the distance for the component is measured using the runout sensor. A correction value corresponding to the measured distance is automatically determined using a processor. The image data corresponding to the measured distance are automatically adjusted with the correction value using the processor. Toner corresponding to the adjusted image data is deposited on the receiver using the component.

Abstract: A novel and versatile table tennis game and method of play thereof is disclosed. The table tennis table game is played on a playing surface in the shape of a hexagon having three pairs of equal length opposing edges. A net is placed in the center of the table to divide the playing surface into two or three separate playing areas. Two playing areas accommodates a maximum of three individuals on both sides of the net. Three playing areas accommodates either three individuals playing against each other or three teams of two individuals playing against each other. A folding support mechanism provides both support and storage for either a 2-piece or a 6-piece table top.

Abstract: An system and related method for maintaining print quality based on development potential measurements that include comparing the current process measurements to a toner concentration related set-point; calculating a quality adjustment range based on current process measurements and the toner concentration related set-point, or a derivative thereof, indicative of print quality; and adjusting current process conditions related to the current process measurements to trend towards a new set point within the quality adjustment range so that a rate of change is proportional to the difference between the current process measurements and the set point.

Abstract: A novel and versatile table tennis game and method of play thereof is disclosed. The table tennis table game is played on a playing surface in the shape of a hexagon having three pairs of equal length opposing edges. A net is placed in the center of the table to divide the playing surface into two or three separate playing areas. Two playing areas accommodates a maximum of three individuals on both sides of the net. Three playing areas accommodates either three individuals playing against each other or three teams of two individuals playing against each other. A folding support mechanism provides both support and storage for either a 2-piece or a 6-piece table top.

Abstract: An system and related method for maintaining print quality based on development potential measurements that include comparing the current process measurements to a toner concentration related set-point; calculating a quality adjustment range based on current process measurements and the toner concentration related set-point, or a derivative thereof, indicative of print quality; and adjusting current process conditions related to the current process measurements to trend towards a new set point within the quality adjustment range so that a rate of change is proportional to the difference between the current process measurements and the set point.

Abstract: An system and related method for maintaining print quality based on development potential measurements that include comparing the current process measurements to a toner concentration related set-point; calculating a quality adjustment range based on current process measurements and the toner concentration related set-point, or a derivative thereof, indicative of print quality; and adjusting current process conditions related to the current process measurements to trend towards a new set point within the quality adjustment range so that a rate of change is proportional to the difference between the current process measurements and the set point.

Abstract: Preventing the imaging forming process of an electrostatographic reproduction apparatus having a plurality of imaging modules in tandem relative to a receiver transport belt moveable along a transport path from becoming contaminated with fuser release oil. A substantially uniform layer of the pigmented marking particles from the development subsystem of the image forming process is deposited onto the photoconductive member of the image forming process during any non-imaging cycles of the process, including cycle down, non-imaging skip frames, or recovery from a receiver jam. The substantially uniform layer of pigmented marking particles acts as a barrier to block fuser release oil from the photoconductive member and as a vehicle to carry away contaminating fuser release oil.

Abstract: An automatic process of setting control set-points, control rates, calibrations, timing parameters and maximum density levels for color modules within a color print engine by utilizing addressable settings of multiple configurable parameters for each color module. The parameters can be independently controlled and maintained. Each color module maintains a list of parameters by storing the parametric values in a non-volatile memory. At initialization, the parameters for each module are read out of the non-volatile memory to set the correct settings for the specific color module.

Abstract: In an electrographic reproduction apparatus having a media transport mechanism for transporting media into operative association with a plurality of different color electrographic process modules, a mechanism for providing image density control signals to the logic and control unit. At least one densitometer is provided for sensing image density control patches on the media transport mechanism and producing signals representative of the density of the such image for the logic and control unit.

Abstract: An automatic process of setting control set-points, control rates, calibrations, timing parameters and maximum density levels for color modules within a color print engine by utilizing addressable settings of multiple configurable parameters for each color module. The parameters can be independently controlled and maintained. Each color module maintains a list of parameters by storing the parametric values in a non-volatile memory. At initialization, the parameters for each module are read out of the non-volatile memory to set the correct settings for the specific color module.

Abstract: In an electrographic reproduction apparatus having a media transport mechanism for transporting media into operative association with a plurality of different color electrographic process modules, a mechanism for providing image density control signals to the logic and control unit. At least one densitometer is provided for sensing image density control patches on the media transport mechanism and producing signals representative of the density of the such image for the logic and control unit.

Abstract: An image-forming machine has a development station with a dusting control system that generates a flow barrier adjacent to a development region.

Abstract: An image-forming machine has a development station with a dusting control system that generates a flow barrier adjacent to a development region.

Abstract: A method and apparatus for a single densitometer design that is used for all colors within multiple color image processing system. The preferred embodiment employs an LED having a light adjustment mechanism for controlling the amount of light received by a light detector in the densitometer. The coarse light adjustment is provided through a variable aperture. Fine light adjustment is accomplished through controlling the current through the LED, either by a potentiometer or through an automated process. Preferably, each of the LEDs is selected by wavelength to maximize the absorption by the colorant yielding light roughly complimentary to the colorant. The adjustment circuit provides advantage in color printing systems by allowing duplicate versions of the same densitometer circuit to yield similar voltage outputs for different colorants, thereby compensating for different absorption characteristics and light output of different colored LEDs.

Abstract: The invention relates generally to apparatus for electrostatic image development and, in particular, apparatus that implement a magnetic brush with a drum photoconductor. According to an aspect of the invention, a method and apparatus for developing an electrostatic image are provided implementing a drum photoconductor and a magnetic brush contacting the drum photoconductor. The magnetic brush includes a mixture of toner and hard magnetic carriers.

Abstract: A method and apparatus for preventing voltage swings within device outputs from reading output node where swings in excess of certain voltages can harm electronics attached to the output node. Specifically, output swings from devices performing logarithmic operations are prevented from reaching the input of an A/D converter, thereby protecting the A/D converter from the large swings possible in logarithmic outputs. A comparator circuit compares the output from the logarithmic amplifier against a threshold and engages the switching mechanism once the threshold is reached. Once the switching mechanism is engaged it applies a predetermined voltage to the output node in place of the true output voltage from the logarithmic amplifier.

Abstract: A method and apparatus for a single densitometer design that is used for all colors within multiple color image processing system. The preferred embodiment employs an LED having a light adjustment mechanism for controlling the amount of light received by a light detector in the densitometer. The coarse light adjustment is provided through a variable aperture. Fine light adjustment is accomplished through controlling the current through the LED, either by a potentiometer or through an automated process. Preferably, each of the LEDs is selected by wavelength to maximize the absorption by the colorant yielding light roughly complimentary to the colorant. The adjustment circuit provides advantage in color printing systems by allowing duplicate versions of the same densitometer circuit to yield similar voltage outputs for different colorants, thereby compensating for different absorption characteristics and light output of different colored LEDs.

Abstract: The invention relates generally to apparatus for electrostatic image development and, in particular, apparatus that implement a magnetic brush with a drum photoconductor. According to an aspect of the invention, a method and apparatus for developing an electrostatic image are provided implementing a drum photoconductor and a magnetic brush contacting the photoconductor. The magnet brush comprises a mixture of toner and hard magnetic carriers.