摘要:
An ink jet recording apparatus for effecting recording on a recording material by ejecting ink with relative scanning movement between a recording head and the recording material, the ink jet recording apparatus, including obtaining means for obtaining information indicative of an amount of ink to be ejected to each of unit areas provided by dividing an area in the neighborhood of a boundary between adjacent bands of scanning recording of the recording head on the recording material; and control means for controlling an amount of being to be ejected to the unit area on the basis of the output of the obtaining means, wherein the unit areas exist astride the boundary between adjacent one of the bands.
摘要:
An image data transfer method for transferring image data to a recording device for effecting an image recording in accordance with the image data using a recording head having a plurality of recording elements, said method, includes a step of simulating a recording operation of the recording device in accordance with a predetermined condition; a step of providing correspondence between raster lines of the image data and recording elements to be used for recording the raster lines on the basis of a result of said simulating step; a step of effecting an image processing the image data for each raster lines having been made to correspond to the recording elements by said correspondence providing step; a step of transferring the image data having been subjected to the image processing to the recording device.
摘要:
A printing information processing system provided in the present invention calculates the total of printing signal values for printing onto at least one boundary area of the upper and lower adjacent boundary areas included in the upper and lower adjacent scanning print areas formed by print heads, and responding to the magnitude of this total of printing signal values performs correction on the magnitude of the print signal value for printing onto the boundary by the use of the print signal for at least one area of the upper and lower adjacent boundary areas.
摘要:
A printing information processing apparatus based on the present invention forms a patch by forming adjacent positions for each of the test area and for reference area composed of a predetermined single-color within a color reproducible range in coloring material used for a plurality of test areas mentioned above and at the same time forms a plurality of patches by changing the gradation in the test area composed of at least one coloring material among the coloring materials equipped with the printing means at the time of printing operation based on the printing means equipped with at least one ordinary coloring material and a special color having a color belonging to color reproducible range based on the ordinary coloring material, and at least one side of both patterns shall contain the special coloring material.
摘要:
In the process of correcting a color deviation caused by output characteristic variations among different colorants in a printing apparatus, a method of printing a test pattern allows an appropriate and highly accurate visual detection of the color deviation. More specifically, the test pattern has a plurality of patches printed therein, each of which has placed adjacent to each other a test area to be checked for the color deviation and a reference area serving as a criterion for color deviation and which has the test area and the reference area repeated alternately. If the colors of the two areas look different during the comparison of only one pair of the test area and the reference area, the pattern of the two alternately repeated areas makes the colors of the two areas appear more uniform, alleviates a high color difference sensitivity and thereby enables easy identification of a patch that matches the accuracy of the correction performed according to the color deviation detection.
摘要:
In a correction processing that corrects a color deviation caused by output characteristic variations among print heads of a printing apparatus, the printing apparatus prints a test pattern that allows accurate detection of the color deviation by a visual check. More specifically, each of the patches in the test pattern is made up of two areas placed adjacent to each other. One of the two areas (upper area) is used as a test area for detecting the degree of the color deviation. Of the gradation values of C, M and Y, which make up the patch print data, the gradation values of C and M are changed among the patches making up the test pattern. The other area is used as a reference area printed with an achromatic color that represents a reference gradation value for the deviation detection. The gradation values of C, M, Y and K are determined so that a spatial frequency of dots formed in the reference area of each patch is close to the spatial frequency of the associated test area.
摘要:
In a color deviation correction process, a printing apparatus prints a test pattern that allows highly accurate visual detection of a color deviation caused by output characteristic variations of individual print heads in the printing apparatus. More specifically, when patches of a test pattern are printed by mixing three colors, cyan, magenta, and yellow, the gradation value of each of the patch forming colors is changed in a gradation region close to a gradation value at which the saturation difference becomes maximum between a patch printed by the print heads having a central output characteristic with no deviation and a patch printed by deviating the gradation value of each color from the central output characteristic by a predetermined value.
摘要:
An information processing apparatus, a printing apparatus, an information processing method and a printing method can print high quality images without lowering throughput by correcting density variations to within a range where they can hardly be perceived by the human eye as stripes or unevenness. With this invention, a print head having a plurality of nozzles capable of ejecting ink is used to print a test pattern based on image data with a predetermined gradation level. Then, based on read data of the test pattern, a temporary correction value &agr;′[N] is calculated which will made the print density of rasters corresponding to each of the plurality of nozzles constant. The temporary correction value &agr;40 [N] is limited by the upper limit &agr;U and the lower limit &agr;L so that it is limited to within a range between &agr;U and &agr;L.
摘要:
An ink jet recording method effects recording on a recording material by ejecting ink comprising coloring material and reaction liquid reactable with the ink from an ink ejection portion for ejecting the ink and a reaction liquid ejection portion for ejecting the reaction liquid. The method includes a recording step of effecting the recording selectively in a first recording mode in which no margin is provided at least one end portion of the recording material and a second recording mode in which margins are provided at all of the end portions of the recording material. A recording condition in the first recording mode and a recording condition in the second recording mode are different.
摘要:
This invention relates to an ink set which can form a colored area on a recording medium with a broad color reproduction range, excellent uniformity of the colors, with effective prevention of bleeding at the boundary between adjacent different color areas on a recording medium, and high rub-off resistance of the colored area. The ink set has separately an aqueous anionic or cationic ink containing a coloring material, and a liquid composition containing fine particles dispersed therein and electrically charged at the surface in a polarity opposite to the ink. The ink and the liquid composition are adjusted to give, when mixed at a mixing weight ratio of about 1:1, a pH of the liquid mixture to cause aggregation of at least the coloring material.