Abstract: According to one aspect, there is provided a method of selectively solidifying successive layers of build material in a 3D printing system. The method comprises obtaining data relating to a 3D object to be generated, forming a layer of build material on a build platform, applying to the formed layer a pattern of fusing agent corresponding to a portion of the layer to be solidified to form a layer of the object, applying to the formed layer a pattern of anti-caking agent on portions of the formed layer that are not to be solidified to form a layer of the object, and applying energy to the whole of the formed layer to cause portions of the layer on which fusing agent was applied to heat up, melt, coalesce, and then solidify upon cooling, and to cause portions of the formed layer on which anti-caking agent was applied to control caking of build material in those portions.

Abstract: In an example, an apparatus is described that includes a plurality of fluid ejection devices, a database, and a raster image processor. The plurality of fluid ejection devices eject a plurality of fluids containing a plurality of different colorants. The database stores an entry for a spot color. The entry defines a first subset of the plurality of fluids that combines to emulate the spot color and a second subset of the plurality of fluids that combines to emulate the spot color. The second subset maximizes a number of the plurality of different colorants used. The raster image processor converts a page description of an image including the spot color into rasterized image data using the second subset of the plurality of fluids.

Abstract: In example implementations, a printhead rotator for rotating printheads is provided. The apparatus includes a housing and a lid coupled to the housing. A rotator assembly that holds a printhead is enclosed by the housing and the lid. The printhead in the rotator assembly is rotated by a motor coupled to the rotator assembly at a predefined rate. A timer display and a color indicator is also coupled to the housing.

Abstract: A process of configuring a web-fed printer is disclosed. Parameters for a web of printable media used in the web-fed printer and for print density are received. The parameters are applied to determine tension of the printable media and speed of the printable media through a print engine of the web-fed printer.

Abstract: A process of configuring a web-fed printer is disclosed. Parameters for a web of printable media used in the web-fed printer and for print density are received. The parameters are applied to determine tension of the printable media and speed of the printable media through a print engine of the web-fed printer.

Abstract: A web press includes a web travel path for a continuous media web between a first nip and a second nip. The web travel path includes a first portion in which the web moves in a first direction and which includes a first printer configured to print on a first side of the web. The web travel path also includes a second portion in which the web moves in a second direction, with second portion including a second printer configured to print on a second side of the web. The web travel path is configured to control a drying time via the respective first and second portions being in a generally parallel, vertically stacked relationship and with each respective first and second portion extending in a generally horizontal orientation.

Abstract: A process of configuring a web-fed printer is disclosed. Parameters for a web of printable media used in the web-fed printer and for print density are received. The parameters are applied to determine tension of the printable media and speed of the printable media through a print engine of the web-fed printer.

Abstract: A web press and method of printing is described.

Abstract: A web press and method of printing is described.

Abstract: A display system includes a display device and a data processing module. The display device is configured to display an image and has a processing profile associated therewith. The data processing module is remote from and operatively coupled to the display device and is configured to receive input image data for the image to be displayed and generate processed image data from the input image data based on the processing profile of the display device.

Abstract: A method and apparatus for calibrating color in an inkjet printing system initiates a calibration procedure by instructing an inkjet printer to print a color calibration sample. From the color calibration sample, an analysis is performed to select a color calibration based on the sample. Based on the characteristics of the selected color calibration, the color of the inkjet printer is calibrated.