Abstract: A printhead auto-alignment detection system includes a UV LED configured and positioned to transmit light in ultraviolet wavelengths onto a printed printhead alignment pattern formed using an aqueous ink having a UV fluorescing material. A sensor is configured and positioned to detect light in visible wavelengths emitted by the fluorescing material. A controller is communicatively coupled to the UV LED and the sensor. The controller is configured to execute program instructions for controlling the output of the UV LED and for reading a signal output of the sensor during a printhead alignment operation.

Abstract: A method of selecting inks for use in imaging with an imaging apparatus includes establishing a high fidelity colorant cube having a plurality of vertex lines pertaining to a corresponding plurality of basic inks, and at least one other vertex line pertaining to at least one high fidelity ink; determining first mixing coordinates of the at least one high fidelity ink and the plurality of basic inks for face grids of the high fidelity colorant cube based on a maximum permitted ink amount; determining second mixing coordinates of the at least one high fidelity ink and the plurality of basic inks for interior grids of the high fidelity colorant cube based on the maximum permitted ink amount; and generating a color conversion lookup table based on the first mixing coordinates and the second mixing coordinates for printing with the imaging apparatus.

Abstract: A method for correcting color shift in an imaging system, including an imaging object, and a standard color conversion lookup table associated with the imaging object, includes measuring a plurality of test patches to obtain color data associated with the imaging object. A signature color data lookup table is generated, based on the color data, and is combined with the standard color conversion lookup table to generate a composite color conversion lookup table for use with the imaging object.

Abstract: Methods and systems of processing an image to reduce artifacts caused by image processing are disclosed. One embodiment includes applying a controlled, adaptive histogram equalization technique to improve the quality of an image. The technique may include classifying an image. The embodiments may use a concentration ratio of an image or portions thereof. Another embodiment may include a system for applying an adaptive histogram equalization technique.

Abstract: A printhead auto-alignment detection system includes a UV LED configured and positioned to transmit light in ultraviolet wavelengths onto a printed printhead alignment pattern formed using an aqueous ink having a UV fluorescing material. A sensor is configured and positioned to detect light in visible wavelengths emitted by the fluorescing material. A controller is communicatively coupled to the UV LED and the sensor. The controller is configured to execute program instructions for controlling the output of the UV LED and for reading a signal output of the sensor during a printhead alignment operation.

Abstract: A method of correcting color shift caused by printing with an imaging system using a first cartridge and a second cartridge different from the first cartridge includes determining individual cartridge characterization data based on each of the first cartridge and the second cartridge individually; determining combined cartridge characterization data that characterizes a usage combination of the first cartridge and the second cartridge; and determining color correction data based on the individual cartridge characterization data and the combined cartridge characterization data.

Abstract: A method for mixing ink for use in an imaging apparatus including an ink jet printer capable of printing a plurality of primary color inks includes the steps of identifying available printing levels for each of the primary color inks, determining a target color profile for each of the primary color inks, and determining a graininess factor for each printing level. A mixing order is set up for at least some of the available printing levels, based in part on corresponding graininess factors and at least one mixing rule. At least a portion of the plurality of available printing levels is mixed, based on the mixing order and the target color profile, generating a plurality of mixing tables. Each mixing table corresponds to one of each of the primary color inks.

Abstract: A method for mixing ink for use in an imaging apparatus including an ink jet printer capable of printing a plurality of primary color inks includes the steps of identifying available printing levels for each of the primary color inks, determining a target color profile for each of the primary color inks, and determining a graininess factor for each printing level. A mixing order is set up for at least some of the available printing levels, based in part on corresponding graininess factors and at least one mixing rule. At least a portion of the plurality of available printing levels is mixed, based on the mixing order and the target color profile, generating a plurality of mixing tables. Each mixing table corresponds to one of each of the primary color inks.