Abstract: Provided in one example is a method. The method includes generating, using a processor, data of a negative of an image to be printed on a print medium. The method includes determining, using the processor, a moisture profile of a print job, which print job includes the image and the negative, using data of the image and the data of the negative. The method includes generating, using the processor, printing instructions of the print job using at least the determined moisture profile. The method includes printing the print job on the print medium using at least the printing instructions.

Abstract: Provided in one example is a method. The method includes generating, using a processor, data of a negative of an image to be printed on a print medium. The method includes determining, using the processor, a moisture profile of a print job, which print job includes the image and the negative, using data of the image and the data of the negative. The method includes generating, using the processor, printing instructions of the print job using at least the determined moisture profile. The method includes printing the print job on the print medium using at least the printing instructions.

Abstract: In an example implementation, a method of dual and single drop weight printing includes operating a printing system in a hybrid drop weight print mode to enable ejecting black ink from high drop weight nozzles and low drop weight nozzles, and ejecting color ink from high drop weight nozzles but not from low drop weight nozzles.

Abstract: In an example implementation, a method of dual and single drop weight printing includes operating a printing system in a hybrid drop weight print mode to enable ejecting black ink from high drop weight nozzles and low drop weight nozzles, and ejecting color ink from high drop weight nozzles but not from low drop weight nozzles.

Abstract: A first roller has a first roller center line; a second roller has a second roller center line. Fluid-ejection mechanisms eject fluid onto the media as the media is rolled past the rollers, and include first mechanisms and second mechanisms. The first mechanisms include first and second printheads, at least substantially equally between which a first positioning line is defined. The second mechanisms include third and fourth printheads, at least substantially equally between which a second positioning line is defined. The fluid-ejection mechanisms are disposed opposite to the roller and are positioned such that the first and second positioning lines are located between the first and second roller center lines, the first and the third printheads are not completely located between the first and the second roller center lines, and the second and the fourth printheads are completely located between the first and the second roller center lines.

Abstract: A first roller has a first roller center line; a second roller has a second roller center line. Fluid-ejection mechanisms eject fluid onto the media as the media is rolled past the rollers, and include first mechanisms and second mechanisms. The first mechanisms include first and second printheads, at least substantially equally between which a first positioning line is defined. The second mechanisms include third and fourth printheads, at least substantially equally between which a second positioning line is defined. The fluid-ejection mechanisms are disposed opposite to the roller and are positioned such that the first and second positioning lines are located between the first and second roller center lines, the first and the third printheads are not completely located between the first and the second roller center lines, and the second and the fourth printheads are completely located between the first and the second roller center lines.

Abstract: Embodiments of the present invention are directed to a method of processing document image data for printing. The method comprises rasterizing all objects in the document image data into a bitmap format including designating black portions of the objects as composite black pixels. Color objects are identified in the document image data that contain color or are adjacent to color. All composite black pixel designations in the identified color objects are maintained as composite black pixel designations without substitution to true black pixel designations. Print data is generated in which the composite black pixel designations will be half-tone printed on a print medium as a portion of composite black ink and a portion of true black ink.

Abstract: A method for predicting the settled appearance of a test patch printed by an imaging system by applying a transfer function to the color of a freshly printed test patch. The transfer function may be formulated to take into account a variety of environmental conditions, such as humidity or temperature, or post-printing processes, such as lamination. The predicted settled test patch color may be exported to an external image processor, or the imaging system processor may internally compare the predicted settled test patch color with the desired test patch color in order to calibrate the color map used by the imaging system.

Abstract: An image forming apparatus has a movable print device. A sensed device with indicia capable of being sensed is positioned adjacent to the movable print device. At least first and second indicia sensors are carried by the movable print device in spaced relation to one another.

Abstract: An image forming apparatus includes at least one cooperative element sensor. A carriage for use in the image forming apparatus has a main body including at least one printer element and at least first and second cooperative elements carried by the main body in spaced relation to one another.

Abstract: A multiple ink jet printing system comprising a plurality of rows of dark dye nozzles and light dye nozzles. Each row of dark dye nozzles is coupled to a supply of dark dye ink, and each row of light dye nozzles is coupled to a supply of light dye ink. Each of the rows of dark dye nozzles and light dye nozzles are arranged substantially parallel to each other, and at least one row of dark dye nozzles is separated from the next row of dark dye nozzles by at least one row of light dye nozzles.

Abstract: A printer for creating specialty-sized prints where media is advanced through the printer along a media advancement path, the printer including a housing, a printing mechanism disposed in the housing and configured to place a desired print on the media, a cutter mechanism disposed in the housing adjacent the printing mechanism and configured to cut the media transverse to a media advancement direction through the cutter mechanism, and a slicing mechanism disposed in the housing adjacent the printing mechanism and configured to cut the media parallel to a media advancement direction through the slicing mechanism.

Abstract: A method for creating photographic-quality prints and prints produced by these methods are disclosed. The prints generally comprise three layers: a transparent carrier; an image, and a particle-based undercoat. The transparent carrier comprises a substrate for receiving an image. The image can be produced by inkjet, electrostatic, or other imaging methods, including reverse printing methods. The particle-based undercoat layer is applied to the image containing side of the transparent carrier. Also disclosed is an apparatus for producing said prints by methods of the present invention.

Abstract: A method for creating photographic-quality prints and prints produced by these methods are disclosed. The prints generally comprise three layers: a transparent carrier; an image, and a particle-based undercoat. The transparent carrier comprises a substrate for receiving an image. The image can be produced by inkjet, electrostatic, or other imaging methods, including reverse printing methods. The particle-based undercoat layer is applied to the image containing side of the transparent carrier. Also disclosed is an apparatus for producing said prints by methods of the present invention.

Abstract: An image forming apparatus having a position sensing device independently sensing the position of at least two locations on a movable print device.

Abstract: An image forming apparatus comprising a sensed device having indicia that is capable of being sensed positioned adjacent to a movable print device, and at least first and second indicia sensors carried by the movable print device in spaced relation to one another.

Abstract: An image forming apparatus includes a fiducial reference point sensor that individually monitors the position of first and second fiducial reference points on a moving print device that are in spaced relation to one another.

Abstract: The present invention provides an image forming apparatus having a fiducial reference point sensor that individually monitors the position of first and second fiducial reference points on a moving print device that are in spaced relation to one another.

Abstract: A multiple ink jet printing system comprising a plurality of rows of dark dye nozzles and light dye nozzles. Each row of dark dye nozzles is coupled to a supply of dark dye ink, and each row of light dye nozzles is coupled to a supply of light dye ink. Each of the rows of dark dye nozzles and light dye nozzles are arranged substantially parallel to each other, and at least one row of dark dye nozzles is separated from the next row of dark dye nozzles by at least one row of light dye nozzles.

Abstract: Throughput of ink jet printers can be increased by using multiple print heads, each of which independently prints an image or text on a continuous roll of print media. Independently controlled printer carriages supporting the print heads simultaneously print images onto media since the printer carriages are separated by a distance that is substantially to equal to at least one dimension of the image to be printed.