摘要:
This disclosure provides methods, apparatus and systems for generating and using color management profiles. Specifically, the color management profiles generated include K-only colorant recipes for image colors associated with a neutral axis.
摘要:
A method is provided for classifying a color printer gamut into a plurality of gamut subclasses including representing the color printer gamut as a composite of gamut classes wherein each gamut class is comprised of a subset of printer color separations; and, assigning selected spot color targets to determined ones of the gamut classes. The method further includes determining if the selected spot color target is located inside, or on-boundary, or outside of the gamut classes.
摘要:
What is disclosed is a novel system and method for performing ray-based compression mapping in a color management system. The present method compresses a color point located at or near a boundary surface of a color gamut to a point beneath the gamut surface in order to eliminate artifacts which are likely to arise from a color marking device trying to reproduce colors which are on a boundary of the device's printable gamut. The present method is directly applicable to a variety of gamut mapping strategies employed in color management systems.
摘要:
The present exemplary embodiment relates to a job integrity and verification system which uses patches comprised of at least one symbology printed in non-visible ink and attached to the individual components of a job. The patches are detected, read, and interpreted by use of an inline spectrophotometer. The content of the plurality of patches are compared and when a match is detected, the components containing the patches are combined together into one end item finished product.
摘要:
Exemplary embodiments provide a roll member that includes one or more controllable cells and methods for making and using the roll member to control an image (or toner) state thereon. The controllable cells can be disposed on a roll substrate and configured in a manner that each controllable cell can be addressed individually and/or as groups. Each controllable cell can be addressable to provide a surface vibration to release toner particles adhered/attracted thereto and can also be capable of sensing the toner state of the roll member and thus to control the image or toner state. In an exemplary embodiment, the disclosed roll member can be used as a donor roll for a development system of an electrophotographic printing machine to create controlled and desired toner powder cloud for high quality image development.
摘要:
This disclosure relates to the color management of image output devices. Specifically, this disclosure provides methods, apparatus and systems to generate a destination printer profile for coated images. According to one exemplary method, the destination printer profile is generated by printing a plurality of color patches which are then coated, measuring the color attributes associated with the coated color patches, and modifying a destination printer profile to compensate for differences between the printed and coated color patches, relative to a respective reference color.
摘要:
This disclosure provides methods, systems and apparatus to manage spot colors for an image marking device. Specifically, disclosed is a spot color control method including selecting a gain matrix K from a plurality of gain matrices, the gain matrix K being selected to satisfy performance criteria associated with the rendering of the target spot color, the performance criteria including an acceptable spot color error associated with the rendered spot color relative to the target color, an acceptable actuator energy utilized to achieve the acceptable spot color error and a total toner/ink usage acceptable to render the spot color.
摘要:
A method for estimating the color of a coated print includes: measuring the color of an uncoated print with a color measuring device; and estimating the color of the print when coated by a coating process based on the uncoated color measurement using a function that correlates uncoated color measurements and coated color measurements; and adjusting at least one parameter of the printing process based on the coated color estimation. The correlating function may be derived by measuring the color of a plurality of uncoated color patches; measuring the color of the plurality of patches after the patches have been coated by the coating process; and correlating the color of the coated patches with the uncoated patches based on the coated and uncoated color patch measurements.
摘要:
Exemplary embodiments provide a direct imaging system and methods for direct marking an image using the system. The disclosed direct imaging system can eliminate the use of at least one of a charge, and/or exposure subsystems in an electrostatographic machine and related processes. Specifically, the direct imaging system can include a direct marking substrate (e.g., a printing substrate) and a development roll member closely spaced from the direct marking substrate. In one embodiment, the development roll member can include a plurality of actuator cells with each actuator cell controllably addressable to eject one or more toner particles adhered thereto. The ejected toner particles can transit the space between the donor roll member and the direct marking substrate, and thereby marking onto the direct marking substrate forming an image.
摘要:
This disclosure provides a method and system to generate device dependent color space representations for an image output device. The method and system are particularly applicable to a printing device, where gamut boundary separated profile methods are executed to map device in-gamut and device out-of-gamut colors.