Abstract: Systems, methods, and devices for converting electric power are disclosed. Converter modules convert power in a configurable manner in conjunction with a controller.

Abstract: A method and system for the determination of toner usage in proportion to image-feature density, with independent estimation of each color toner module consumption. The system accurately accounts for image-wise color interactions due to color occlusion that may effect the actual amount of toner used by multiple color modules. The method includes a toner replenishment flow control process that responds to the toner consumption/depletion in the developer material (e.g., toner and carrier) as determined by one or more estimation modules, and thus maintains a stable and constant toner/carrier concentration ratio.

Abstract: In a digital printing apparatus, such as a xerographic or ink-jet printer, test marks, such as halftone patches or fiducial marks for image registration, are generated on demand. Coordinates of a desired location of the test mark within an imageable area (such as on a print sheet or on a photoreceptor), as well as a selection of the desired type of test mark, are entered through a user interface. Also entered is data about conditions under which image-quality tests using the test marks are to be performed. Information about the test mark and test conditions is retained as a small number of scalar values. The system enables test methods for a machine to be changed easily, and a basic set of system software can be readily applied to different types of printing hardware.

Abstract: A method and system for the determination of toner usage in proportion to image-feature density, with independent estimation of each color toner module consumption. The system accurately accounts for image-wise color interactions due to color occlusion that may effect the actual amount of toner used by multiple color modules. The method includes a toner replenishment flow control process that responds to the toner consumption/depletion in the developer material (e.g., toner and carrier) as determined by one or more estimation modules, and thus maintains a stable and constant toner/carrier concentration ratio.

Abstract: In a digital printing apparatus, such as a xerographic or ink-jet printer, test marks, such as halftone patches or fiducial marks for image registration, are generated on demand. Coordinates of a desired location of the test mark within an imageable area (such as on a print sheet or on a photoreceptor), as well as a selection of the desired type of test mark, are entered through a user interface. Also entered is data about conditions under which image-quality tests using the test marks are to be performed. Information about the test mark and test conditions is retained as a small number of scalar values. The system enables test methods for a machine to be changed easily, and a basic set of system software can be readily applied to different types of printing hardware.

Abstract: There is provided a method for use with a printing machine having a movable imaging member and a projecting system for modulating a beam and projecting an image into the movable imaging member. The printing machine further includes a developer for application of developer material to the image projected onto the movable imaging member for transfer of the image to a print media sheet.

Abstract: The present invention generally relates to an imaging system, and more specifically, a method and apparatus for accurately predicting toner usage and hence toner dispensing requirements in an imaging system. The toner concentration control system maintains toner concentration in a developer structure, which is connected to a dispenser containing toner.

Abstract: The present invention generally relates to an imaging system, and more specifically, a method and apparatus for accurately predicting toner usage and hence toner dispensing requirements in an imaging system. More specifically, the present invention relates to a feed forward toner concentration control system and method for replacing toner in each developer structure, which was used to develop a latent image on a photoreceptor belt, in order to maintain toner concentration in at least one developer structure. First and second pixel counts for first and second toner in each sector are received. The first toner mass is estimated based on first pixel counts. The second toner mass is estimated based on second pixel counts.

Abstract: The present invention generally relates to an imaging system, and more specifically, a method and apparatus for accurately predicting toner usage and hence toner dispensing requirements in an imaging system. More specifically, the present invention relates to a toner concentration control system for maintaining toner concentration in a developer structure, which is connected to a dispenser containing toner.

Abstract: The present invention generally relates to an imaging system, and more specifically, a method and apparatus for accurately predicting toner usage and hence toner dispensing requirements in an imaging system. More, specifically, the present invention relates to a toner concentration control system for maintaining toner concentration in a developer structure, which is connected to a dispenser containing toner.

Abstract: A method of decreasing toner in solid area development to improve the latitude of a xerographic process in a machine having a projecting system for modulating a beam and projecting an image onto an imaging surface by specifying pixels defining solid image areas and selectively modulating the beam with regard to the specified pixels to change the state of the pixels from black to gray or partial white.

Abstract: An image data transfer architecture in which control data and image data are isolated is provided. Bidirectional buffers isolate data buses from the control bus, thereby allowing control to be maintained by an 8-bit programmed microprocessor. The controller microprocessor does not handle image data thereby reducing complex software and support components required of prior multiple 16- and 32-bit microprocessor controller systems. Isolation is achieved by having multiple data buses handling image data at various stages of processing, such as, for example, input image data, compressed image data and output image data. Additional efficiencies are realized by eliminating the inherent delays caused when high speed image output terminals are forced to share data buses with much lower speed image input terminals.

Abstract: A method and apparatus for modifying an image data signal has a serial channel for obtaining a desired number of current M-bit patterns from the image data. Unique bit patterns are recognized in the current bit patterns, and new bit patterns are generated, each being specific to the detected unique bit pattern. The current and new bit patterns are combined in a predetermined manner to modify the image data as desired. For example, if the unique bit patterns are recognized as dark images on a leading edge of an image, the new bit patterns are generated and combined with the current bit patterns to lighten the image, particularly at the leading edge to improve stripping of the print media on which the image is printed from a fuser roll of the printer.

Abstract: An apparatus for switching runners in an injection molding system of the type having cavities which are joined by runners, the apparatus having a bushing member which has a top end, a bottom end and a central aperture, the bottom end having at least two outwardly disposed runner extensions which are in flow communication with the central aperture and the cavity runners, a bushing insert which is sealingly and rotatably fitted within the central aperture of the bushing member and which has a bottom end having therein a runner extension device which is in flow communication with one of the runner extensions in the bushing member when the bushing insert is in one position and which is in flow communication with another runner extension in the bushing member when the bushing insert is in a second position; and an indexing member carried by the bushing insert and the bushing member for establishing a plurality of predeterined relative positions of the bushing insert relative to the bushing member.

Abstract: A fluid jet assisted electrographic marking apparatus for placing electrostatic charges upon a receptor surface in an imagewise pattern by converting high speed serial data into real time parallel applied data including means for supplying a transport fluid, a housing including an upstream ion generation region and a downstream ion modulation region, the housing including inlet means for receiving transport fluid from the means for supplying located upstream of said ion generation region, ion modulation means located at the ion modulation region, an outlet means from which transport fluid exits the housing, said ion modulation means including charged storage means having electrically conductive electrodes positioned adjacent the path of the transport fluid in the ion modulation region for controlling the passage of ions out of said housing, and a data translator for converting the serial data into real time parallel applied data, the charge storage means and the electrodes being integrally fabricated upon a s

Abstract: An electrically operated stapling apparatus is disclosed having a circuit utilizing a capacitor for driving the solenoid actuator for the apparatus. The circuit includes a fullwave rectifier for charging the capacitor with closely spaced dc pulses and includes circuitry for producing a plurality of charging levels for the capacitor depending upon the number of sheet material to be stapled. A reference circuit is also provided to insure the voltage level of charging is such that the operation of the apparatus is immune to line source voltage fluctuations.

Abstract: An automatic duplicating system in which computer fanfold documents are fed by an automatic handling apparatus having a tractor and drive control system for advancing the document across the platen of the processor for the system. An arrangement is provided which will shut down the system in the event there is a break in the fanfold material during a reproduction run or the end of the document has been attained during normal operation. Sensing devices are utilized in the path of movement of the document and a circuit is provided to produce a train of pulses in accordance with the movement of the document. The frequency of the train of pulses is compared with a reference frequency to insure proper operation.

Abstract: An automatic duplicating system in which computer fanfold documents are fed by an automatic handling apparatus having a tractor and drive control system for advancing the document across the platen of the processor for the system. An arrangement is provided which will control operation of the tractor and drive control system, and use is made of a stepper motor having many, small angled rotational movements which can be digitally controlled. A logic circuit arrangement is provided to energize and control the motor so that precise positioning of an edge of each frame section of the fanfold document can be made relative to a platen registration edge. In addition, the logic circuit is adapted to effect acceleration and deceleration of the motor in a controlled sense.

Abstract: An automatic duplicating system in which computer fanfold documents are fed by an automatic handling apparatus having a tractor and drive mechanism for advancing the document across the platen of the processor for the system. An arrangement is provided which will control operation of the tractor and drive mechanism for job recovery in the event there is a malfunction in the operation of the system and in order to keep the integrity of the count of copies being made. Operator actuated programmer is provided to assist in making up the lost copies.

Abstract: An automatic duplicating system in which computer fanfold documents are fed by an automatic handling apparatus having a tractor and drive control system for advancing the document across the platen of the processor for the system. An arrangement is provided which will shut down the system in the event there is a break in the fanfold material during a reproduction run or the end of the document has been attained during normal operation. Sensing devices are utilized in the path of movement of the document and a circuit is provided to produce a train of pulses in accordance with the movement of the document. The frequency of the train of pulses is compared with a reference frequency to insure proper operation.