Abstract: A method for monitoring relative position of a carriage and a recording medium in an inkjet printing system having a roller for advancing the recording medium along a recording medium advance direction, the method includes sending light from a light source toward at least a portion of the roller; receiving reflected light in a two-dimensional sensor mounted on the carriage; sending a signal from the two-dimensional sensor to a controller, wherein the signal indicates the pattern of reflected light received by the two-dimensional sensor; comparing the received signal by the controller to a signal stored in memory; and calculating a shift between the received signal and the signal stored in memory.

Abstract: An inkjet printing system includes a roller for advancing a recording medium along a recording medium advance direction; an inkjet printhead that ejects drops of ink; a carriage for moving the printhead along a carriage scan direction that is substantially perpendicular or perpendicular to the recording medium advance direction; one or more motors for driving the roller and moving the carriage; a two-dimensional sensor mounted on the carriage which two-dimensional sensor is configured to sense either: a) the recording medium; b) the roller and the recording medium; or c) the roller; and a controller for receiving electrical signals from the two-dimensional sensor and for controlling the one or more motors.

Abstract: This invention is directed to the design of radially expandable vascular stents to optimize hemodynamic flow characteristics that are favorable for the inhibition of stent-associated thrombosis, inflammation, and restenosis (neointimal formation) and that will reduce the risk of adverse events post-deployment.

Abstract: An inkjet printing system includes a roller for advancing a recording medium along a recording medium advance direction; an inkjet printhead that ejects drops of ink; a carriage for moving the printhead along a carriage scan direction that is substantially perpendicular or perpendicular to the recording medium advance direction; one or more motors for driving the roller and moving the carriage; a two-dimensional sensor mounted on the carriage which two-dimensional sensor is configured to sense either: a) the recording medium; b) the roller and the recording medium; or c) the roller; and a controller for receiving electrical signals from the two-dimensional sensor and for controlling the one or more motors.

Abstract: A method for monitoring relative position of a carriage and a recording medium in an inkjet printing system having a roller for advancing the recording medium along a recording medium advance direction, the method includes sending light from a light source toward at least a portion of the roller; receiving reflected light in a two-dimensional sensor mounted on the carriage; sending a signal from the two-dimensional sensor to a controller, wherein the signal indicates the pattern of reflected light received by the two-dimensional sensor; comparing the received signal by the controller to a signal stored in memory; and calculating a shift between the received signal and the signal stored in memory.

Abstract: A waste ink absorber and evaporator for an inkjet printing system includes a body of porous capillary medium that wicks liquid ink to an outer surface having several corrugations that form an evaporative outer surface area of the body of porous capillary medium.

Abstract: A background plate for use with a document feeder and a scanning device having a transparent document support. The background plate includes a plate member and a plurality of support members extending downwardly from the plate member and adapted to support the plate member on the scanning device in spaced relation to the transparent document support.

Abstract: An automatic document feeder includes a low profile, small footprint document output tray having an overall length of about one-half a document length and a shallow curvature with a centrally disposed medium depressor at the central region of the curve that forces a medium sheet to stiffen and to take the curved shape of the output tray.

Abstract: An automatic document feeder mounted removably to a computer input device having a medium receiving and supporting surface includes a plurality of interconnectable modular assemblies for defining a medium path that extends from a medium input tray to a medium output tray via the medium receiving and supporting surface of the computer input device. One of the modular assemblies is a main chassis assembly includes an integrally formed main chassis shell having a substantially planar base. The input tray has a document receiving surface with a concave shape in both the vertical and horizontal planes to help facilitate proper sheet stiffening and alignment for sheet loading purposes onto the receiving and supporting surface of the computer input device. A pair of spaced apart drive rollers mounted to a spring loaded drive axle engage in seriatim individual sheets for loading and unloading them onto the supporting surface of the computer input device.

Abstract: A method for converting methane by an oxidative coupling reaction to longer chain hydrocarbons comprising cofeeding methane and oxygen simultaneously and continuously into a reaction zone to form a mixture, contacting said methane and oxygen mixture under oxidative coupling reaction conditions with a solid catalyst consisting essentially of manganese oxide and silicon oxide, promoted with an alkaline metal and non metal, to form longer chain hydrocarbons wherein the manganese, silicon oxide, alkali metal and non metal are present in a molar ratio 0-0.5:93.2-93.7:4.2:2.1.

Abstract: An improved method for the oxidative conversion of methane into higher hydrocarbons in which methane and oxygen are continuously and simultaneously cofed into a reaction zone under effective oxidative coupling conditions and contacted with a solid catalyst consisting essentially of a catalyst having a composition of empirical formula Ce.sub.a Na.sub.b Ca.sub.100 O.sub.x wherein a is in the range 0.03 to 2.0, b is in the range of 0.7 to 7.0 and oxygen is present in a molar amount sufficient to fulfill the valence requirements of cerium, sodium and calcium.