Abstract: An approach is provided for determining a degree of curing of one or more ultraviolet sensitive inks. The approach involves causing, causing, at least in part, one or more ultraviolet inks to be applied to a substrate to form an image. The approach also involves causing, at least in part, the image to be exposed to ultraviolet light produced by one or more ultraviolet light sources to cause, at least in part, the one or more ultraviolet inks to be cured to form a cured image. The approach additionally involves determining a reflectance value of the cured image. The approach further involves determining a degree of cure of the cured image based, at least in part, on the reflectance value. The approach may be used to alter the degree of curing of another image applied to a substrate.

Abstract: A printer includes an image drum temperature regulation system that helps reduce thermal gradients on the image drum surface. The image drum temperature regulation system includes a feedback controller and a feed-forward controller. The image drum temperature regulation system operates the heaters and fan of the image drum with reference to a temperature difference between actual temperature of the image drum and a temperature setpoint and to the thermal effect of ejecting an ink image onto the image drum.

Abstract: A process for preparing an imaging surface of an imaging transfer member in a printing machine, the process comprises providing a surface roughness to the imaging surface to produce a plurality of pits having sharp features on the surface, and then exposing the pitted imaging surface to an acid dip for a time period sufficient to substantially reduce the sharp features on the imaging surface. This process may be followed by anodization. The process produces an imaging surface having a pit structure providing reduced oil consumption and wear of components of the printing machine that contact the imaging surface.

Abstract: An inkjet offset printer includes at least one printhead to eject ink on a release agent applied to an image receiving member for subsequent transfer of the ink to the surface of a recording media. The release agent is applied to the image receiving member by at least two release agent applicators. The release agent can be selectively applied to process sheets of recording media of different sizes to improve print quality. Selective application of release agent to the image receiving member prevents release agent from migrating to a transfix roll, and subsequently to the back side of the media which affects the image quality.

Abstract: A process for preparing an imaging surface of an imaging transfer member in a printing machine, the process comprises providing a surface roughness to the imaging surface to produce a plurality of pits having sharp features on the surface, and then exposing the pitted imaging surface to an acid dip for a time period sufficient to substantially reduce the sharp features on the imaging surface. This process may be followed by anodization. The process produces an imaging surface having a pit structure providing reduced oil consumption and wear of components of the printing machine that contact the imaging surface.