Abstract: A spots cleaning blade for use in a cleaning apparatus in an imaging apparatus for cleaning agglomerate particles from an imaging surface, the spots cleaning blade comprising a polyether urethane and having a high hardness and low coefficient of friction.

Abstract: A method and apparatus for accurately and quickly enabling a technical representative to diagnose the source (or identify the component(s)) that is the root cause of the motion quality defect being experienced to reduce down time of the printing machine. The output of an encoder on the photoreceptor, electronically measured, translates variations in the photoreceptor velocity into voltage. The voltage is then converted into frequency, using a Fast Fourier Transform, for comparison to a predetermined set of frequencies associated with defective drive components to identify the source of the motion quality defect.

Abstract: A system for correcting registration errors in a printer. The system includes a memory device for storing sequential rasters of image data and an interpolator coupled to the memory device, the interpolator using the rasters of image data from the memory device in conjunction with multiplication factors to calculate an interpolated resample value. The system also includes addressing circuitry for providing address signals to the memory device, the addressing circuitry also providing the multiplication factors to the two dimensional interpolator. Finally, included is a correction device for providing adjustment values to the addressing circuitry, the adjustment values being used to correct for the registration errors.

Abstract: An electrocapillary color display sheet is disclosed which utilizes three spaced apart and parallel sheets in which the medial sheet has a plurality of sets of at least two reservoirs. Each reservoir in each set holds a different color polar liquid and each liquid in each reservoir has an individual electrical contact. By selectively activating each liquid in each reservoir of each set of reservoirs, the activated liquid of the set of reservoirs will flow into a space commonly shared by the liquids of that set of reservoirs to create a colored pixel. Deactivating the liquids will cause each liquid to retreat back into its reservoir which in turn clears the colored pixel.

Abstract: An array includes first and second light active units with a difference in effective size that would be sufficient to produce an artifact in images if the first and second units were adjacent. Instead of being adjacent, the first and second units are separated by a spacing in which intermediate units form a series extending from the larger unit to the smaller unit. Every unit in the series has an effective size less than the preceding unit, but the size differences between adjacent units are insufficient to produce an artifact. The array can be a display, and the first and second units can be light control units in a column, with the difference in effective size resulting from paired lines adjacent the smaller unit. Spacings between lines bounding rows of light control units can be different, or rows can have nearly constant pitch but dark matrix can define aperture boundaries that have different effective sizes.

Abstract: A charge transporting random copolyester resin comprising a repeating unit comprising at least one partial structural unit represented by formula (I-1) or (I-2), and at least one partial structural unit represented by formula (II) as a dicarboxylic acid component: ##STR1## where the symbols in the above formulae are defined in the specification. A process for producing the same and an organic electronic device comprising the charge transporting random copolyester resin are also disclosed.

Abstract: A copier or printer connecting with a standard commercial electrical power line source and having a limited peak power consumption can still provide an electrically powered sheet stapling system by driving the stapler from an electrical storage battery power supply, the batteries of which are electrically connecting with an integral low voltage electrical power supply of the reproduction apparatus only for low power slow recharging. The stapler is operable for stapling sheets, powered solely by the storage batteries, even when the copier or printer, including its integral low voltage electrical power supply, is completely turned off, i.e., fully disconnected from the power line source. This stapler can also be operated when the reproduction machine is fully operating at its peak power consumption, including the operation of other, internal, stapling, because this stapler's operation does not increase that peak power consumption.

Abstract: The invention discloses a system and method for sensing changes in the weight of an ink reservoir which supplies ink to a printhead which ejects ink onto a recording medium during a printer operational mode. The ink reservoir, whether located separately from the printhead, as in a plotter or pagewidth printer embodiment, or mechanically attached to the printhead and moved in a scanning printhead architecture, has its weight supported by a structure. A strain gage or other weight sensor is affixed to the supporting structure and incorporated in a circuit which produces an output signal representative of resistive changes in the weight sensor. Since a resistive change in the weight sensor is caused by a decrease in the supply of ink in the reservoir during continued printer operation, the output signal is proportional to the ink level.

Abstract: A printing system for producing a print job, the printing system including a print engine for imaging regular substrates, fed to the print engine from a regular substrate feeding apparatus and delivering the imaged regular substrates to an output; and a duplexer operatively coupled to the print engine having a first path for feeding imaged regular substrates to the print engine for duplex printing, the duplexer having a second, sheet insertion, path for feeding special sheets to the output of imaged regular substrates.

Abstract: A liquid ink printing apparatus printing images includes a printhead having a plurality of nozzles wherein a single power pulse causes two or more nozzles to eject ink simultaneously. The printhead includes an ink directing element having a plurality of ink conduits coupled to an array of spaced nozzles and a transducer element aligned with and mated to the ink directing element. The transducers are spaced a distance apart and each transducer is substantially aligned with at least two or more of the nozzles. The printhead is stepped in a direction transverse to the array of spaced nozzles a stepping distance approximately equal to or less than the distance between transducers. The ink directing element includes a silicon wafer having etched ink conduits or channels holding ink for ejection through the nozzles connected thereto.

Abstract: A coated donor roll comprises a core with a coating, the coating comprising a charge transporting polymer, an organic acid metal salt compound, and iodine.

Abstract: A free radical polymerization process for the preparation of polymer comprising:a first heating and photoinitiating with ultraviolet light of a mixture comprised of a stable free radical agent, and at least one polymerizable monomer compound;optionally cooling said mixture;a second heating of said mixture at a temperature of from about 100.degree. C. to about 160.degree. C.;isolating the polymer product formed; andoptionally washing and drying said polymer.

Abstract: A document processing system is provided for processing a job having one or more electronic pages with at least one of the electronic pages including a set of pixels defining a halftone image. Each pixel is disposed in one of a first state and a second state, and the set of pixels includes a plurality of dots with each dot including a group of one or more pixels disposed in the first state. The document processing system includes an image examination system for determining whether a first dot and a second dot exist within a selected subset of one of the one or more sets of pixels. When the image examination system determines that the first and second dots exist in the selected subset, the image examination system determines whether the first dot includes more or less pixels disposed in the first state than the second dot.

Abstract: A user-directed method for operating a processor-controlled machine permits a user to operate on an object-based model data structure from which a first image has been produced in order to produce a second image for display in the spatial context of the first image, and then to interact with objects in the displayed second image. The method is cooperates as cooperating with the functionality of an application program, such as a graphical object editor. The user requests the display of a viewing operation region (VOR) coextensively with a first image segment of the first displayed image. In response to the user's request signal, a viewing operation associated with the VOR operates on the object-based model data structure that produced the first image to produce an output model data structure from which is produced a second view, or image, of the portion of the first image coextensively positioned with the VOR, displaying the second view in the VOR.

Abstract: A combination dual hard roll and dual elastomeric belt fuser. A pair of hard, heated fuser rolls having elastomeric belts entrained thereabout are supported such that segments of the belts are sandwiched in a nip area therebetween. The belt segments are sufficiently thick to provide belt conformability resulting in high quality fused images. One of the belts is partially wrapped about one of the rigid rolls to form an extended heating zone and a combination heat and pressure zone through which substrates carrying toner images are moved.

Abstract: An ink jet printhead has improved resistance to the corrosive effects of ink by coating the surface of a photo-imageable polymer with an ink resistant film. In one described embodiment, a thermal ink jet element is formed by bonding together a channel plate and a heater plate. Resistors and electrical connections are formed in the heater plate. A polyimide layer is formed so as to overlie the heater plate to protect the electrical elements while providing pit structure for the heater and for ink flow bypass. A tantalum film is formed on the surface of the polyimide layer to protect the layer from the effects of corrosive ink. In another embodiment, the ink resistant film is amorphous carbon or silicon nitride.

Abstract: When a metal strip continuously fed and made of stainless-steel, an aluminum alloy or a nickel alloy is bent followed by welding opposite ends of the metal strip to form a pipe and followed by grinding the pipe, the pipe is subjected to heat treatment after the pipe has been welded and before the pipe is ground. Annealing or normalizing adaptable to the type of the metal is selected as the heat treatment. As a result, work hardening can be relieved by the above processes. Moreover, generation of magnetism attributable to martensitic transformation generated in a portion, in which bending stress is concentrated, can be prevented. Thus, work hardening due to the bending operation during the process for forming the pipe can be relieved so that the following grinding operation is performed accurately. Therefore, generation of partial magnetism due to the bending operation can be prevented so that an excellent image can be formed.

Abstract: An apparatus and method for cleaning charged triboelectric negative toner residual particles from the photoreceptor surface. A positive bias is applied to two electrostatic brushes in the dual cleaning system or to a single electrostatic brush. The rotational speed of the single positive brush is increased, over that of the individual brushes in a dual brush cleaner, to clean charged triboelectric negative toner particles.

Abstract: A heating device for desensitizing migration imaging film on an external imaging member scanner. The heating device is curved and has a large surface area to provide maximum heating efficiency. The heating device is mounted to a bracket connected to a scanner cartridge and moves integrally with the scanner cartridge in the direction of the longitudinal axis of the imaging member. The heating device heats the migration imaging film to a temperature to ensure that the surface charge on the film is changed, but is less than a temperature needed for selenium particle migration. As a result, the selenium in the migration imaging film is no longer sensitive under daylight conditions. Thus, the migration imaging film can be removed and heated under daylight conditions providing a significant advantage over film that must be removed and heated under red light conditions.

Abstract: A monitoring system for replaceable units, such as toner cartridges in an electrophotographic printer, includes on the unit an electronic count memory and an electronic flag memory. The count memory maintains a one-by-one count of prints made with the cartridge. The flag memory includes a series of bits which are alterable from a first state to a second state but not alterable from the second state to the first state. The bits in the flag memory are altered at predetermined intervals as prints are made with the cartridge. The flag memory is used as a check to override unauthorized manipulation of the count memory.