摘要:
A method of processing cyan, magenta and yellow color values including half-toning cyan and magenta colors values, and half-toning yellow color values in such a manner that yellow dots tend to be printed next to cyan, magenta or secondary color dots regardless of cyan, magenta, or yellow coverages.
摘要:
A method for printer to monitor color matching includes displaying a target color pattern corresponding to a source color pattern and printing a plurality of reference color patterns, each reference color pattern corresponding to a color corrected source color pattern. The method includes comparing the reference and target color patterns and determining whether there is a match according to a user-defined criteria. A system includes a display device to display a source color pattern represented in a first color space in a second color space; a printer to map first color space values of the source color pattern to third color space values associated with the printer; color correction transforms to map the third color space values associated with the printer to another set of color space values; and a printer driver to configure color settings according to the selected color correction transform and a selected print mode.
摘要:
An improved apparatus for recording a gradient image on transparent media. The apparatus has at least one solid phase change ink and a solid null image element. A printing head melts the solid phase change ink to form a molten phase change ink and melts the solid null image element to form a molten null image element. The molten phase change ink and the molten null image element are deposited, in an imagewise pattern, onto a transfer surface. A cooling mechanism cools the molten phase change ink and the molten null image element in the imagewise pattern to form a malleable phase change ink and a malleable null image element in the imagewise pattern on the transfer surface. The malleable phase change ink and the malleable null image element are transfered to a media from the transfer surface in the imagewise pattern.
摘要:
A technique for selective enhancement of black including printing a non-black color at pixel locations identified by a candidate pixel array and which correspond to marked pixels in a predetermined pixel pattern, wherein the candidate pixel array comprises a plurality of N-pixel candidate tiles respectively associated with N-pixel image tiles of a black half-toned bit map, wherein an N-pixel candidate tile includes marked pixels only if the associated N-pixel image tile comprises a portion of a half-toned uniform region and the number of marked pixels in the associated N-pixel image tile is at least a predetermined percentage of N, and wherein the number of marked pixels in some of the N-pixel candidate tiles is less than the number of marked pixels of the associated N-pixel image tile.
摘要:
A printing technique wherein pixel locations that are requested to be marked with only black are identified, black is applied to the identified pixel locations, and non-black color is applied to those identified pixel locations that (A) have an associated black half-tone threshold level that is darker than a predetermined non-white threshold level, and (B) correspond to on-pixels of a reference pattern of non-black color pixels having an on-pixel population of at least 20 percent and a toner transfer efficiency of less than about 20 percent.
摘要:
A method of printing with phase change ink on an ink jet printer that contains multiple levels of black gray scale ink and a clear or slightly tinted wax ink base and which is applied to the roughened surface of an adhesion promoting coating applied to a transparent substrate is disclosed. The adhesion promoting coating has a surface roughness of greater than about 0.5 micrometers and contains a binder and an inorganic particulate material.
摘要:
Writing a decompressed bit-map cell in accordance with a pixel count and a fill order pattern based on half-tone threshold values of a half-toned bit-map compression cell that was used to determine the pixel count.
摘要:
An imaging system that forms an image on a receiving medium including a fluid ejector that ejects fluid onto the receiving medium and a controller that controls the fluid ejector to eject the fluid to include a non-white and non-clear fluid or one of at least white and clear W fluid on each pixel on the receiving medium. A substantially single layer of fluid is ejected onto the receiving medium. A method for forming an image on a receiving medium includes ejecting a fluid onto the receiving medium, and controlling the ejection of the fluid to include a non-white and non-clear fluid or one of at least white and clear fluid for each pixel on the receiving medium.
摘要:
A method of operating a printing system that can print any of several different colors onto a point on a sheet of printer media. The method includes using a halftoning screen with a matrix of assorted threshold values, along with image data having a matrix of image data elements. For each data element and each color, a density value is determined to establish the amount of each color needed to produce the color associated with the original data element. Then a calculation determines which of the colors will be printed to the particular location. In a selected sequence of colors, density values of the colors are added one by one to generate a density sum that increases until it exceeds the threshold value. The last color added, which caused the sum to exceed the threshold, is then printed to the media sheet at a corresponding point. The system may employ a high frequency blue noise screen, and may operate to print droplets of more colors than the number of ink colors by printing secondary color dots formed of two or more different color ink, as well as single color dots.
摘要:
A gray scale ink jet printing method and apparatus which produce a high quality images having varying color intensities are disclosed. This is achieved by using a clear phase change ink base and a plurality of colored phase change inks with varying amounts of black dye, thereby producing multiple gray scale levels of black in images with substantial contrast between the imaged and non-imaged areas that are used in medical diagnostic imaging applications.