CN112622461A - Optimized control method for face color of flexible printing figure - Google Patents
Optimized control method for face color of flexible printing figure Download PDFInfo
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- CN112622461A CN112622461A CN202011485693.XA CN202011485693A CN112622461A CN 112622461 A CN112622461 A CN 112622461A CN 202011485693 A CN202011485693 A CN 202011485693A CN 112622461 A CN112622461 A CN 112622461A
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- 238000007639 printing Methods 0.000 title claims abstract description 62
- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000005457 optimization Methods 0.000 claims abstract description 4
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 230000000295 complement effect Effects 0.000 claims description 3
- 230000001502 supplementing effect Effects 0.000 claims description 2
- 238000001035 drying Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 238000005562 fading Methods 0.000 abstract description 3
- 239000013589 supplement Substances 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 239000000976 ink Substances 0.000 description 23
- 239000007787 solid Substances 0.000 description 4
- 238000000926 separation method Methods 0.000 description 3
- 239000003086 colorant Substances 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M1/00—Inking and printing with a printer's forme
- B41M1/14—Multicolour printing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M1/00—Inking and printing with a printer's forme
- B41M1/02—Letterpress printing, e.g. book printing
- B41M1/04—Flexographic printing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/46—Measurement of colour; Colour measuring devices, e.g. colorimeters
- G01J3/462—Computing operations in or between colour spaces; Colour management systems
Landscapes
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Engineering & Computer Science (AREA)
- Mathematical Physics (AREA)
- Theoretical Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Color Image Communication Systems (AREA)
- Facsimile Image Signal Circuits (AREA)
Abstract
The invention provides an optimization control method for the face color of a flexible printing figure, which comprises the following steps: the four color print was replaced with red M, yellow Y and black K, and the C hue was filled in with black K and red M. The face of the figure printed by the method is not easy to dirty, the face is ruddy and soft, and the whole face is brighter than the face with the C. In addition, the invention can avoid the problems of dry fading of printing and dirty printing of figure face images caused by over-bottom smearing during the drying of the water-based ink in the traditional printing, and solves the problems of impure color of black-white printed matters and dull and lusterless color after drying caused by the traditional printing; the method can realize the printing of black and gray images with warmer tones or cool tones and other tones, and can also supplement the restoration of fine layers, thereby meeting the requirement of printing effect.
Description
Technical Field
The application relates to the field of printing, in particular to an optimization control method for flexibly printing face color of a person.
Background
Four-color printing generally refers to a printing process for reproducing various colors of a color original document using primary colors of yellow, red, and cyan (blue) and black inks. Wherein, C: cyan's shorthand Chinese: blue; m: abbreviated chinese for Magenta: magenta; y: shorthand Chinese for Yellow: yellow; k: short for Black, Chinese: black in color.
When a four-color printing process is adopted, the thickness of the ink layer of each color is strictly controlled in order to ensure the tone and the correct color restoration due to the requirements of the printing process or the economic benefit. In general, in four-color printing, the density of black solid areas does not exceed 1.8, and printing large areas of black solid areas at such a density lacks a thick visual effect. A common method is to overprint about 40% of cyan onto a large area black solid portion.
The black solid is overprinted with a small amount of cyan, and the visual effect is thicker when viewed from the hue. When only one color of black is originally printed on white paper, paper dust and paper powder are accumulated on a rubber blanket in the printing process, or ink transfer is influenced by other reasons, so that white sand holes appear on the black field, and the black-white contrast is very obvious.
The traditional printing color separation is C, M, Y, K, if according to traditional color separation mode in the flexo printing process, the dirty version of face easily appears when printing the personage face, frequently changes the version, causes the printing effect to reach the requirement, has also increased printing cost in addition.
Disclosure of Invention
In order to solve the above problems, the present invention provides an optimization control method for flexibly printing face color of a person, comprising: the four color print was replaced with red M, yellow Y and black K, and the C hue was filled in with black K and red M.
The method for optimizing and controlling the face color of the flexible printed person comprises the following steps: step 1: performing tone analysis on the printing pattern to generate printing data, performing data printing processing through a controller, and generating printing processing data by performing color conversion processing, complementary color processing and blank processing on the printing data received from the controller; step 2: comparing the output color chart with the printing data through a color comparator, and feeding back the difference data; supplementing the hue according to the reduction of the international color union tables and the reduction of the number of color gamuts of the test patterns relative to the scanning reduction; and step 3: and inputting Lab data according to the set color Lab value and the printing characteristics to perform color cycle matching, adjusting the printing cycle value and performing printing.
In the method for optimizing and controlling the face color of the flexible printed person, in step 1, the data transmission mode selects an international color consortium color profile with a file extension of.icm.
In the method for optimizing and controlling the face color of the flexible printed person, the color Lab values are as follows: blue ink C: l is 50.50 ± 2, a is 1.50 ± 1, b is-2.0 ± 1; red ink M: l is 70.40 ± 2, a is 2.5 ± 1, and b is 3.0 ± 1; yellow ink Y: l is 74.0 ± 2, a is 0.95 ± 1, and b is 5.0 ± 1; black ink K: l is 11.98 ± 2, a is 0.35 ± 1, and b is 0.30 ± 1.
In the method for optimizing and controlling the face color of the flexible printed person, in step 3, the data feedback interval is set within 0.5S.
The face of the figure printed by the method is not easy to dirty, the face is ruddy and soft, and the whole face is brighter than the face with the C. In addition, the invention can avoid the problems of dry fading of printing and dirty printing of figure face images caused by over-bottom smearing during the drying of the water-based ink in the traditional printing, and solves the problems of impure color of black-white printed matters and dull and lusterless color after drying caused by the traditional printing; the method can realize the printing of black and gray images with warmer tones or cool tones and other tones, and can also supplement the restoration of fine layers, thereby meeting the requirement of printing effect.
Detailed Description
The following examples are presented to enable those skilled in the art to more fully understand the present application and are not intended to limit the present application in any way.
Blue ink C, red ink M, yellow ink Y, black ink K, as four-color inks for printing; the Lab values for the four color inks were: blue ink C (L ═ 50.50 ± 2, a ═ 1.50 ± 1, b ═ 2.0 ± 1), red ink M (L ═ 70.40 ± 2, a ═ 2.5 ± 1, b ═ 3.0 ± 1), yellow ink Y (L ═ 74.0 ± 2, a ═ 0.95 ± 1, b ═ 5.0 ± 1), black ink K (L ═ 11.98 ± 2, a ═ 0.35 ± 1, b ═ 0.30 ± 1).
The invention optimizes the color separation as follows: m, Y, K are provided. The C color hue is supplemented by K and M, so that the printed figure face is not easy to dirty, the face is ruddy and soft, and the whole face is brighter than the face with C.
The invention can avoid the problems of printing dry fading and dirty face image of a person caused by over-bottom smearing when the water-based ink is dried in the traditional printing, and solves the problems of impure color of black-white printed matters and dull and lusterless color after drying caused by the traditional printing; the method can realize the printing of black and gray images with warmer tones or cool tones and other tones, and can also supplement the restoration of fine layers, thereby meeting the requirement of printing effect.
The printing method mainly comprises the following steps:
step 1: the print pattern is subjected to tone analysis to generate print data. Executing a data printing process by a controller, generating print process data for color conversion processing, complementary color processing, blank processing, and the like of print data received from the controller, the data transfer mode being capable of selecting an ICC (international color consortium) color profile with a file extension of. icm;
step 2: the controller is locally connected with a colorimetric instrument such as a colorimeter, a spectrocolorimeter and the like. The color comparator compares the color chart output from the printer with the printing data set by the customer requirement and feeds back the difference data; by the method described here, the table of ICC is reduced for the case of color conversion with respect to the contrast data, the number of color fields of the test pattern is reduced for the case of scanning, and the hue is supplemented, and the face hue is dominated by the C hue;
and step 3: according to the set color Lab value: blue ink C (L ═ 50.50 ± 2, a ═ 1.50 ± 1, b ═ 2.0 ± 1), red ink M (L ═ 70.40 ± 2, a ═ 2.5 ± 1, b ═ 3.0 ± 1), yellow ink Y (L ═ 74.0 ± 2, a ═ 0.95 ± 1, b ═ 5.0 ± 1), black ink K (L ═ 11.98 ± 2, a ═ 0.35 ± 1, b ═ 0.30 ± 1), color cycle matching is performed by inputting Lab data according to print characteristics, print cycle values are adjusted, and data feedback intervals are set to be within 0.5S (ultra high speed printing), and normal printing is performed according to an existing flexible printing method, for example, screen printing or the like.
Those skilled in the art will appreciate that the above embodiments are merely exemplary embodiments and that various changes, substitutions, and alterations can be made without departing from the spirit and scope of the application.
Claims (5)
1. An optimization control method for the face color of a flexible printing character comprises the following steps:
the four color print was replaced with red M, yellow Y and black K, and the C hue was filled in with black K and red M.
2. The method of claim 1 for optimizing control of the color of a face of a flexographic printing character, comprising:
step 1: performing tone analysis on the printing pattern to generate printing data, performing data printing processing through a controller, and generating printing processing data by performing color conversion processing, complementary color processing and blank processing on the printing data received from the controller;
step 2: comparing the output color chart with the printing data through a color comparator, and feeding back the difference data; supplementing the hue according to the reduction of the international color union tables and the reduction of the number of color gamuts of the test patterns relative to the scanning reduction;
and step 3: and inputting Lab data according to the set color Lab value and the printing characteristics to perform color cycle matching, adjusting the printing cycle value and performing printing.
3. The method of claim 2, wherein in step 1, the data transfer means selects an international color consortium color profile with a file extension of. icm.
4. The method of claim 2, wherein the color Lab values are as follows: blue ink C: l is 50.50 ± 2, a is 1.50 ± 1, b is-2.0 ± 1; red ink M: l is 70.40 ± 2, a is 2.5 ± 1, and b is 3.0 ± 1; yellow ink Y: l is 74.0 ± 2, a is 0.95 ± 1, and b is 5.0 ± 1; black ink K: l is 11.98 ± 2, a is 0.35 ± 1, and b is 0.30 ± 1.
5. The method of claim 2, wherein in step 3, the data feedback interval is set to within 0.5S.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011485693.XA CN112622461A (en) | 2020-12-16 | 2020-12-16 | Optimized control method for face color of flexible printing figure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011485693.XA CN112622461A (en) | 2020-12-16 | 2020-12-16 | Optimized control method for face color of flexible printing figure |
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| CN112622461A true CN112622461A (en) | 2021-04-09 |
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| CN202011485693.XA Pending CN112622461A (en) | 2020-12-16 | 2020-12-16 | Optimized control method for face color of flexible printing figure |
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Application publication date: 20210409 |
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