Abstract: The present invention relates to a method for providing paper stack level calibration in a reproduction apparatus. According to various aspects of the invention, methods are provided for continuous feeding with a transition from one supply to another, and leaving a controlled number of sheets in the prior supply.

Abstract: The present invention relates to a method for providing paper stack level calibration in a reproduction apparatus. According to various aspects of the invention, methods are provided for continuous feeding with a transition from one supply to another, and leaving a controlled number of sheets in the prior supply.

Abstract: The present invention relates to a method for providing paper stack level calibration in a reproduction apparatus. According to various aspects of the invention, methods are provided for continuous feeding with a transition from one supply to another, and leaving a controlled number of sheets in the prior supply.

Abstract: The invention is in the field of timing control of electrographic machines. The invention is particularly suited for changing from one frame mode to another. Printing processes and apparatus are provided wherein timing signals are generated, such as one periodic timing signal having a period corresponding to a first frame size, and another alternative periodic timing signal having a period corresponding to a second frame size that is different from the first period The printing process and apparatus creates indicium that are at variable distances and create alternate frame modes to improve productivity with receiver sheets of various sizes. A splice indicium indicating a location of a splice in the electrographic imaging member may also be provided.

Abstract: An electrostatographic reproduction apparatus having a transfer assembly, including an electrically biased transfer roller in nip relation with a dielectric support member, for effecting transfer of a pigmented marking particle image from an image area of a dielectric support member to a receiver member in transfer relation with the dielectric support member in the transfer nip, a mechanism for cleaning the transfer roller including a control for the electrical bias on the transfer roller. The electrical bias control has a power supply generating an electrical output, of a settable polarity, connected to the transfer roller for applying an electrical bias of a set polarity thereto. A mechanism disables the power supply for a period of time during a start-up phase of reproduction so as to prevent transfer of residual marking particles from the dielectric support member to the transfer roller.

Abstract: A job ordering system for an image-forming machine that transfers an image onto a sheet at essentially the same time in which an inserter places an inserted sheet into a sheet output path. The image-forming machine has image-forming equipment, a sheet output path, and an inserter. The image-forming equipment transfers an image onto a sheet and provides the sheet to the sheet output path. The inserter places an inserted sheet onto the sheet output path at essentially the same time as the image-forming equipment transfers the image onto the sheet. One or more images may be transferred onto a plurality of sheets according to a sheet sequence for an image-forming job. One or more inserted sheets may be placed on the sheet output path at one or more inserted sheet positions.

Abstract: This invention provides an image-forming machine with a user detection system. The image-forming machine has image-forming equipment and at least one sensor. The image-forming equipment may include a photoconductor, one or more chargers, an exposure machine, a toning station, a fusing station, related equipment, and accessories. The image-forming machine may also include a sensor interface and a communication link. The sensor is monitored to detect when a user is near the image-forming machine. An output signal from the sensor indicates a user presence near the image-forming machine. A warm-up procedure is started in response to the output signal of the sensor.

Abstract: The present invention provides an electrophotographic (EP) image-forming machine and related method having activation of a charger cleaner in a corona charger after an arcing fault. The corona charger has corona wires connected to a high voltage potential supply, preferably providing a voltage in the range of about 5 to 11 kva or in the range of about 13,000 to 22,000 volts peak-to-peak. A corona voltage detection circuit is connected to measure current changes in the high voltage potential supply. A grid has a preselected electric potential to control the charge. The grid may be grounded, but preferably is connected to a power supply providing a voltage in the range of about 300 to 900 volts. A grid voltage detection circuit is connected to measure current changes in the power supply. The voltage detection circuits provide a voltage signal to a microprocessor. When arcing occurs, the microprocessor cycles the EP image-forming machine into a standby mode.

Abstract: An electrostatographic recording apparatus and method has a primary image forming member (PIFM) that is moving along a closed path. The PIFM is sufficiently large to form a series of images thereon in the direction of movement of the PIFM during a production run of image formation. Plural series of toner images are formed on the PIFM during production runs. A first location on the PIFM is normally used to form images forming a part of the production runs. The first location is adjacent to and downstream of, in the direction of movement of the PIFM, a second location, such as a seam area, that is not used for image recording of production images during the production runs. A transfer device that is in engagement with the PIFM has its electrical bias switched from a first polarity used when transferring toner images from the PIFM to a second polarity that is of opposite polarity when the transfer device is in engagement with the PIFM at the second location.