INK PRINT-THROUGH COLOR VALUE ESTIMATION METHOD AND APPARATUS, COLOR VALUE ESTIMATION METHOD AND APPARATUS TAKING INK PRINT-THROUGH INTO CONSIDERATION, TARGET COLOR SETTING METHOD AND APPARATUS TAKING INK PRINT-THROUGH INTO CONSIDERATION AS WELL AS CONTROLLING METHOD AND APPARATUS FOR PRINTING PRESS
First Claim
1. An ink print-through color value estimation method for estimating an ink print-through color value of ink print-through which arises, on the one-face side of a printed matter, which has two faces to be printed by a printing press, from permeation of color of ink printed on the other-face side, comprising:
- a picture data acquisition step of acquiring one-face side picture data of a picture printed on the one face side of the printed matter and the other-face side picture data of a picture printed on the other face side of the printed sheet;
a basic print-through color value calculation step of calculating a one-face side basic print-through color value where the one face side of the printed matter is blank based on the other-face side picture data using a relationship of a simple print-through color correlation which is a relationship with a basic color value where the one face side is blank with respect to the other-face side picture data; and
a print-through color value calculation step of correcting the basic print-through color value based on a degree of a basic color value of the other-face side picture data and the one-face side picture data at a position corresponding thereto to calculate a print-through color value.
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Abstract
The present invention relates to a color value estimation method and apparatus for a printing press which make it possible to estimate a color value with high accuracy taking ink print-through of a sheet-formed printed matter which is printed on the opposite faces. A one-face side picture data and the other face side picture data to be printed on a printing sheet are acquired, and a basic print-through color value from the other face side to the one-face side is calculated from the other face side picture data using a correlation relationship with a basic color value where one-face side with respect to the other face side picture data is blank. Then, the basic print-through color value is corrected based on the degree of the basic color value to the other face side picture data and the one-face side picture data corresponding to the other face side picture data to calculate a print-through color value. Further, a one-face side basic color value where the other face side of the printing sheet is blank is calculated from the one-face side picture data using the correlation relationship with the basic color value where the one-face side with respect to the other face side picture data is blank. Then, a one-face side color value, which includes a value by ink print-through, to be detected by a calorimeter is estimated from the calculated print-through color value and one-face side basic color value.
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Citations
16 Claims
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1. An ink print-through color value estimation method for estimating an ink print-through color value of ink print-through which arises, on the one-face side of a printed matter, which has two faces to be printed by a printing press, from permeation of color of ink printed on the other-face side, comprising:
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a picture data acquisition step of acquiring one-face side picture data of a picture printed on the one face side of the printed matter and the other-face side picture data of a picture printed on the other face side of the printed sheet; a basic print-through color value calculation step of calculating a one-face side basic print-through color value where the one face side of the printed matter is blank based on the other-face side picture data using a relationship of a simple print-through color correlation which is a relationship with a basic color value where the one face side is blank with respect to the other-face side picture data; and a print-through color value calculation step of correcting the basic print-through color value based on a degree of a basic color value of the other-face side picture data and the one-face side picture data at a position corresponding thereto to calculate a print-through color value.
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2. A color value estimation method taking ink print-through, which arises, on the one-face side of a printed matter, which has two faces to be printed by a printing press, from permeation of color of ink printed on the other-face side, into consideration, comprising:
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a picture data acquisition step of acquiring one-face side picture data of a picture printed on the one face side of the printed matter and the other-face side picture data of a picture printed on the other face side of the printed sheet; a basic color value calculation step of calculating a one-face side basic color value where the other face side of the printed matter is blank based on the one-face side picture data using a relationship of a simple color correlation which is a relationship with a basic color value where the other face side is blank with respect to the one-face side picture data; a basic print-through color value calculation step of calculating a one-face side basic print-through color value where the one face side of the printed matter is blank based on the other-face side picture data using a relationship of a simple print-through color correlation which is a relationship with a basic color value where the one face side is blank with respect to the other-face side picture data; a print-through color value calculation step of correcting the basic print-through color value based on a degree of a basic color value of the other-face side picture data and the one-face side picture data at a position corresponding thereto to calculate a print-through color value; and a color value estimation step of estimating a one-face side color value to be detected as a value which includes ink print-through by a calorimeter from the one-face side basic color value calculated at the basic color value calculation step and the print-through color value calculated at the print-through color value calculation step. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10)
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11. An ink print-through color value estimation apparatus for estimating an ink print-through color value of ink print-through which arises, on the one-face side of a printed matter, which has two faces to be printed by a printing press, from permeation of color of ink printed on the other-face side, comprising:
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a picture data acquisition section for acquiring one-face side picture data of a picture printed on the one face side of the printed matter and the other-face side picture data of a picture printed on the other face side of the printed sheet; a basic print-through color value calculation section for calculating a one-face side basic print-through color value where the one face side of the printed matter is blank based on the other-face side picture data using a relationship of a simple print-through color correlation which is a relationship with a basic color value where the one face side is blank with respect to the other-face side picture data; and a print-through color value calculation section for correcting the basic print-through color value based on a degree of a basic color value of the other-face side picture data and the one-face side picture data at a position corresponding thereto to calculate a print-through color value.
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12. A color value estimation apparatus taking ink print-through, which arises, on the one-face side of a printed matter, which has two faces to be printed by a printing press, from permeation of color of ink printed 5 on the other-face side, into consideration, comprising:
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a picture data acquisition section for acquiring one-face side picture data of a picture printed on the one face side of the printed matter and the other-face side picture data of a picture printed on the other face side of the printed sheet; a basic color value calculation section for calculating a one-face side basic color value where the other face side of the printed matter is blank based on the one-face side picture data using a relationship of a simple color correlation which is a relationship with a basic color value where the other face side is blank with respect to the one-face side picture data; a basic print-through color value calculation section for calculating a one-face side basic print-through color value where the one face side of the printed matter is blank based on the other-face side picture data using a relationship of a simple print-through color correlation which is a relationship with a basic color value where the one face side is blank with respect to the other-face side picture data; a print-through color value calculation section for correcting the basic print-through color value based on a degree of a basic color value of the other-face side picture data and the one-face side picture data at a position corresponding thereto to calculate a print-through color value; and a color value estimation section for estimating a one-face side color value to be detected as a value which includes ink print-through by a calorimeter from the one-face side basic color value calculated by said basic color value calculation section and the print-through color value calculated by said print-through color value calculation section. - View Dependent Claims (13, 14, 15, 16)
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Specification