Abstract: A blood pump apparatus can include a pump housing having a drive chamber containing a drive mechanism. A cupped member can be connected to the housing and the drive mechanism can include a motor for rotating an eccentric shaft. A pumping arm can be provided having one end riding on the eccentric shaft, an intermediate portion pivotably attached to the housing and another end connected to a movable plate. A roller bearing can be mounted on the eccentric shaft on which the arm can ride. A compressible blood chamber having an inlet and an outlet connected can be provided sandwiched between the cupped portion and the movable plate. The motor thus rotates the cam causing the pumping arm to pivot which cycles the movable plate against the blood chamber to pump blood. The movable plate can be implanted adjacent a lung such that the lung moves with the plate as blood is pumped and thereby functions as a compliance chamber. A speed reducer can be provided between the motor and the eccentric shaft.

Abstract: A blood pump apparatus can include a pump housing having a drive chamber containing a drive mechanism. A cupped member can be connected to the housing and the drive mechanism can include a motor for rotating an eccentric shaft. A pumping arm can be provided having one end riding on the eccentric shaft, an intermediate portion pivotably attached to the housing and another end connected to a movable plate. A roller bearing can be mounted on the eccentric shaft on which the arm can ride. A compressible blood chamber having an inlet and an outlet connected can be provided sandwiched between the cupped portion and the movable plate. The motor thus rotates the cam causing the pumping arm to pivot which cycles the movable plate against the blood chamber to pump blood. The movable plate can be implanted adjacent a lung such that the lung moves with the plate as blood is pumped and thereby functions as a compliance chamber. A speed reducer can be provided between the motor and the eccentric shaft.

Abstract: A method including:providing a facility with at least one controlled access electronic printing machine;printing original documents with the controlled access electronic printing machine, wherein printed images formed thereby arise from marking materials containing at least one photoactive additive;equipping all uncontrolled access reprographic devices within the facility with a secure illumination source capable of exposing an object document with sufficient intensity to activate the photoactive additive; andilluminating the object document with the secure illumination source of the uncontrolled access reprographic device, wherein the object documents having original document images printed thereon cannot be copied or scanned in a normal copy or scan illumination interval.

Abstract: A scanning background member is provided with two or more superimposed line sets or density patterns of having frequencies unrelated to each other that can be detected by a background detection circuit of a document scanner. The multifrequency edge detection arrangement may also control various image movement and modification features that CCD or full-width array sensors may be used to produce accurate edge detection with minimum processing hardware. Detection of differing frequency density patterns or line sets on the scanning background permits the scanner to precisely determine the edges and cutout areas of a scanned original sheet, while employing minimized hardware and software processing requirements. Frequency-related or other edge detection errors that may result from image patterns, moire effects or other inherent, problematic or random sheet/image conditions may be greatly reduced if not eliminated.

Abstract: An electrostatographic printing machine having a charge control system incorporated therein, wherein first and second surface voltage potentials on the imaging surface are measured to determine a dark decay rate model representative of surface voltage potential decay on the imaging surface with respect to time, and the dark decay rate model is used to determine the surface potential voltage at any point on the imaging surface corresponding to a given charge voltage. This information is used for providing a predictive model to determine the charge voltage required to produce a target surface voltage potential at a selected point on the imaging surface.

Abstract: Adjustable image print magnification system for a printer of the type using a raster output scanner having a rotating scanning polygon, a pixel clock providing clock signals for clocking pixels from an image signal source to the scanner, a polygon clock for controlling the rotating speed of the polygon, a first cycle stealing circuit for reducing the scanner pixel and polygon clocks together to control image length, and a second cycle stealing circuit for reducing the pixel clock only to control image width.

Abstract: A system for controlling satellite beams in either a tangentially or sagittally offset optical alignment of the type used with raster scanners without introducing objectionable cross scan bow to the image line wherein the axes of the input beam is set at a predetermined small angle to the scan plane axes of the scan lens and the rotating scanning element are set at a predetermined small opposing angles to one another with respect to the scan to promote divergence of any satellite beams and thereby facilitate intercepting and blocking thereof without interfering with the imaging beam, the angular relationship between the axes of the input beam and scan lens and the axis of the scanning element minimizing cross scan bow of the image line at the image plane.

Abstract: An electrostatographic reproducing apparatus is described wherein a first frame portion and a second frame portion are oriented relative to each other to define at least in part, a copy sheet transport path with the second frame portion being pivotally mounted toward and away from the first frame portion thereby providing open and closed positions with respect to the first frame portion. The first frame portion includes at least one fixed driven sheet transport roll and the second frame portion includes at least one idler nip roll positioned opposite the sheet transport roll in the first frame portion. The second frame portion further including means to bias the second frame portion toward the first frame portion so that the idler nip roll is directly biased into driving engagement with the driven sheet transport roll in the first frame portion and the second frame portion is self-referenced against the first frame portion.