Abstract: A catalyst structure includes: (1) a substrate; (2) a catalyst layer on the substrate; and (3) an adhesion layer disposed between the substrate and the catalyst layer. In some implementations, an average thickness of the adhesion layer is about 1 nm or less. In some implementations, a material of the catalyst layer at least partially extends into a region of the adhesion layer. In some implementations, the catalyst layer is characterized by a lattice strain imparted by the adhesion layer.

Abstract: A catalyst structure includes: (1) a substrate; (2) a catalyst layer on the substrate; and (3) an adhesion layer disposed between the substrate and the catalyst layer. In some implementations, an average thickness of the adhesion layer is about 1 nm or less. In some implementations, a material of the catalyst layer at least partially extends into a region of the adhesion layer. In some implementations, the catalyst layer is characterized by a lattice strain imparted by the adhesion layer.

Abstract: When calibrating a transfer assist blade (TAB) in a printer, toner patches are formed on a photoreceptor belt in the printer at locations between sheets of paper. The TAB is partially deployed between paper sheets to pick up toner, and then deployed normally or with a delay to mark the back sides of the sheets. A processor evaluates distances between TAB touchdown and liftoff points and leading and trailing edges of the sheets, and calibrates the TAB to optimize the TAB timing. Additionally, test prints can be generated, each having slightly varied TAB calibration settings that are stored in a non-volatile memory (NVM) table. A user enters an identification number for a test print with the best calibration settings. The processor looks up calibration settings corresponding to the entered identification number and moves NVM settings from the table into operational locations in the system NVM to calibrate the printer.

Abstract: A correction algorithm may be applied for correcting misalignment of a radially-aligned array of sensors. Due to the tilt, signals from sensors that are further away from the media, may become slightly attenuated, while signals from sensors that are closer to the media are slightly increased. The error appears periodic and largely sinusoidal in nature around the array given the circular nature of the array of sensor elements. The algorithm determines the magnitude and phase of a sinusoidal function that best fits the wavelength data. In one embodiment, a discrete Fourier transform may be performed at the ‘frequency’ equivalent to one period around the array to determine the magnitude and phase estimate thereof. Then, a sinusoidal correction function may be generated using the magnitude and the phase in order to correct the reflectance data.

Abstract: A digital printing system employing tandem marking engines for duplex printing utilizing a variable dwell time in the output sheet inverter of the first marking engine to provide correct positioning of the leading edge of the inverted sheet for arrival at the entrance of the second marking to avoid the seam in the photoreceptor.

Abstract: When calibrating a transfer assist blade (TAB) in a printer, toner patches are formed on a photoreceptor belt in the printer at locations between sheets of paper. The TAB is partially deployed between paper sheets to pick up toner, and then deployed normally or with a delay to mark the back sides of the sheets. A processor evaluates distances between TAB touchdown and liftoff points and leading and trailing edges of the sheets, and calibrates the TAB to optimize the TAB timing. Additionally, test prints can be generated, each having slightly varied TAB calibration settings that are stored in a non-volatile memory (NVM) table. A user enters an identification number for a test print with the best calibration settings. The processor looks up calibration settings corresponding to the entered identification number and moves NVM settings from the table into operational locations in the system NVM to calibrate the printer.

Abstract: A digital printing system employing tandem marking engines for duplex printing utilizing a variable dwell time in the output sheet inverter of the first marking engine to provide correct positioning of the leading edge of the inverted sheet for arrival at the entrance of the second marking to avoid the seam in the photoreceptor.

Abstract: A correction algorithm may be applied for correcting misalignment of a radially-aligned array of sensors. Due to the tilt, signals from sensors that are further away from the media, may become slightly attenuated, while signals from sensors that are closer to the media are slightly increased. The error appears periodic and largely sinusoidal in nature around the array given the circular nature of the array of sensor elements. The algorithm determines the magnitude and phase of a sinusoidal function that best fits the wavelength data. In one embodiment, a discrete Fourier transform may be performed at the ‘frequency’ equivalent to one period around the array to determine the magnitude and phase estimate thereof. Then, a sinusoidal correction function may be generated using the magnitude and the phase in order to correct the reflectance data.

Abstract: A method and system for digital printing with plural marking engines in which a controller determines which of the marking engines has first completed its initialization/warm-up cycle and begins printing on that marking engine. As additional marking engines complete their initialization/warm-up cycle, additional concurrent printing is commenced on them.