Abstract: A three-dimensional object printer has a platen that is configured to facilitate the release of objects formed on the platen. The platen includes a first layer and second layer, the first layer having a coefficient of thermal expansion that is different than a coefficient of thermal expansion of the second layer. A controller in the printer is configured to operate at least one ejector in an ejector head to form a three-dimensional object on the surface of the platen with reference to digital image data and, upon completion of the object, to operate a temperature control device operatively connected to the platen to bend the platen by changing the temperature of the platen and releasing a three-dimensional object from the platen.

Abstract: A method and system for reducing contamination build-up within a fuser roll system are disclosed where there is provided the positioning of an active static eliminator over the pre-fuser transport. This device will neutralize the charge on the surface of the toner after transfer/detack thereby reducing the attraction to the surface of the fuser roll which is conductive and grounded.

Abstract: A printer compensates for printing errors occurring during production of the layers for the formation of an object in a three-dimensional printer. The printer includes an optical sensor that generates data corresponding to edges of each layer of the object after each layer is printed. Differences between the raster data used to eject the material to form a layer and the data received from the optical sensor are used to modify the raster data that operates a printhead to form a next layer in the object.

Abstract: A printer compensates for printing errors occurring during production of the layers for the formation of an object in a three-dimensional printer. The printer includes an optical sensor that generates data corresponding to edges of each layer of the object after each layer is printed. Differences between the raster data used to eject the material to form a layer and the data received from the optical sensor are used to modify the raster data that operates a printhead to form a next layer in the object.

Abstract: A three-dimensional object printer has a platen that is configured to facilitate the release of objects formed on the platen. The platen includes a first layer and second layer, the first layer having a coefficient of thermal expansion that is different than a coefficient of thermal expansion of the second layer. A controller in the printer is configured to operate at least one ejector in an ejector head to form a three-dimensional object on the surface of the platen with reference to digital image data and, upon completion of the object, to operate a temperature control device operatively connected to the platen to bend the platen by changing the temperature of the platen and releasing a three-dimensional object from the platen.

Abstract: A three-dimensional object printer includes an actuator that contacts a surface of a platen in the printer. A controller selectively operates the actuator to apply force to a bottom layer of a three-dimensional object formed on the platen to break an adhesion between the bottom layer and the platen.

Abstract: A processor places a printer apparatus in a reduced activity mode after printing requests have not been received for an “inactivity” time period. A belt support device rotates a photoreceptor belt at a reduced speed when the printer apparatus enters the reduced activity mode and for a “delay” time period after the printer apparatus enters the reduced activity mode. The belt support device returns the rotational speed of the photoreceptor belt to the original speed if a new printing request is received during the delay time period. However, the belt support device stops rotation of the photoreceptor belt and reduces the belt tension if the delay time period expires without receiving a new printing request.

Abstract: A processor places a printer apparatus in a reduced activity mode after printing requests have not been received for an “inactivity” time period. A belt support device rotates a photoreceptor belt at a reduced speed when the printer apparatus enters the reduced activity mode and for a “delay” time period after the printer apparatus enters the reduced activity mode. The belt support device returns the rotational speed of the photoreceptor belt to the original speed if a new printing request is received during the delay time period. However, the belt support device stops rotation of the photoreceptor belt and reduces the belt tension if the delay time period expires without receiving a new printing request.

Abstract: An electrostatic transfer control method that avoids undesired retransfer effects. A printing device develops and transfers several control patches. The patches are transferred at different electrostatic set points and a control strategy is utilized involving one or more density sensors to measure the transferred toner patches whereby the obtained density information can be used to compute the optimal value of electrostatic transfer bias. Print operators can adjust the bias value based on preferences for predetermined standards.

Abstract: This invention relates to modifying built-in software in printing and copier machines. In particular, the modification will be to software relating to the transfer system control algorithms. This modification can take place when different paper, substrate, toner or environment changes. The purpose of this modification is to provide an optimum image quality when any of these conditions change.

Abstract: Disclosed are methods and apparatus for marking an image on a media substrate using an intermediate transfer printing arrangement. Specifically disclosed is an image transfer nip arrangement associated with a secondary transfer of an image which utilizes a constant current source to generate an electric field across the nip and transfer toner from an intermediate transfer surface to a media substrate.

Abstract: The subject embodiments disclose an electrostatic transfer control method that avoids undesired retransfer effects. A printing device develops and transfers several control patches. The patches are transferred at different electrostatic set points and a control strategy is utilized involving one or more density sensors to measure the transferred toner patches whereby the obtained density information can be used to compute the optimal value of electrostatic transfer bias. Print operators can adjust the bias value based on preferences for predetermined standards.

Abstract: Disclosed are methods and apparatus for marking an image on a media substrate using an intermediate transfer printing arrangement. Specifically disclosed is an image transfer nip arrangement associated with a secondary transfer of an image which utilizes a constant current source to generate an electric field across the nip and transfer toner from an intermediate transfer surface to a media substrate.

Abstract: This invention relates to modifying built-in software in printing and copier machines. In particular, the modification will be to software relating to the transfer system control algorithms. This modification can take place when different paper, substrate, toner or environment changes. The purpose of this modification is to provide an optimum image quality when any of these conditions change.

Abstract: With a stapler having a fixed stapling position of its stapling head, in which a set of sheets to be stapled is inserted and at least partially manually repositioned under the stapling head to control the actual staple insertion position, an externally visible illuminated line is provided on the set of sheets being repositioned under the staple head, which illuminated line is located directly at the fixed stapling position of the stapling head, irrespective of the manual repositioning of the sheets being stapled, to thereby provide a clearly visible and accurate indication of a selected staple insertion position before actual stapling.

Abstract: A transfer charging device is arranged with dual transfer-assist blades consisting of a pressure blade and a halo blade. The pressure blade is arranged for contacting and thereby urging a substrate against an image-bearing photoreceptor. The pressure blade is formed of a relatively conductive material. The halo blade is formed of a dielectric material. The halo blade is positioned between the transfer charging device and the pressure blade to shield the pressure blade from being charged-up by the transfer charging device.

Abstract: A system for preventing the escape of electromagnetic emissions includes a metallic electromagnetic shield. The electromagnetic shield is placed substantially around an electronic subsystem. The metallic electromagnetic shield has an aperture opening to allow light reflected from an image to be incident upon a photosensor of the electronic subsystem. An aperture electromagnetic shield is placed over the aperture opening to allow light to pass therethrough and to reduce or eliminate electromagnetic emissions from escaping through the aperture opening.