CN106379049A - Gravure printing image quality control method - Google Patents
Gravure printing image quality control method Download PDFInfo
- Publication number
- CN106379049A CN106379049A CN201610770653.7A CN201610770653A CN106379049A CN 106379049 A CN106379049 A CN 106379049A CN 201610770653 A CN201610770653 A CN 201610770653A CN 106379049 A CN106379049 A CN 106379049A
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- cmyk
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- intaglio
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- 238000003908 quality control method Methods 0.000 title claims abstract description 16
- 238000007646 gravure printing Methods 0.000 title abstract 4
- 238000007639 printing Methods 0.000 claims abstract description 30
- 238000000034 method Methods 0.000 claims abstract description 28
- 238000012360 testing method Methods 0.000 claims abstract description 8
- 241000532370 Atla Species 0.000 claims description 13
- 238000005259 measurement Methods 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 7
- 238000004587 chromatography analysis Methods 0.000 claims description 4
- 238000002474 experimental method Methods 0.000 claims description 3
- 210000004209 hair Anatomy 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 230000000007 visual effect Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract 3
- 239000000976 ink Substances 0.000 description 13
- 238000007726 management method Methods 0.000 description 5
- 239000003086 colorant Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000000295 complement effect Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 2
- 230000001680 brushing effect Effects 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000004247 hand Anatomy 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000011514 reflex Effects 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F33/00—Indicating, counting, warning, control or safety devices
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C1/00—Apparatus, or methods of use thereof, for testing or treating seed, roots, or the like, prior to sowing or planting
- A01C1/02—Germinating apparatus; Determining germination capacity of seeds or the like
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Physiology (AREA)
- Soil Sciences (AREA)
- Environmental Sciences (AREA)
- Facsimile Image Signal Circuits (AREA)
- Spectrometry And Color Measurement (AREA)
Abstract
The invention provides a gravure printing image quality control method which comprises the following steps: first, manufacturing a CMYK color card; next, performing a printing test on the CMYK color card, so as to obtain a color reproduction curve under the premise that the dot gain is within a standard tolerance range; then, manufacturing a test version by utilizing the color reproduction curve, selecting three dots from each color on the color reproduction curve to control an image, and comparing the measured density values of the three dots with a standard value to judge whether each color meets the requirement within the tolerance range or not, wherein the three dots respectively correspond to dark tone, middle tone and highlight of the image; and finally, manufacturing a printing plate and a printing proof according to a standard sample, a color characteristic file and a standard color curve. By adoption of the gravure printing image quality control method provided by the invention, middle tone and shallow net control dots are added, so that direct engraving on the printing plate can be achieved and no other cost is needed; after a printing sample is obtained, whether the requirement is met or not can be determined through direct measuring, thereby avoiding the subjectivity in conventional visual sample measuring; the method is simple in judgement and easy to operate; and the accuracy and the standard property of gravure printing image quality control are improved.
Description
Technical field
The present invention relates to a kind of method of the quality for controlling intaglio-printed image, belong to gravure application field.
Background technology
For printing image, typically first printing sample is obtained by printer, after sample confirmation to be printed is errorless, then this is printed
Sample is as the foundation of the final visual determination of printer.When printer only needs to the standard sample that mates the pull of oneself Yu confirmed
When, this method is used very well.However, when there is multiple stage printer in a company, the state due to every printer may not
Unanimously, thus the not consistent problem of the result that identical color exports may be led in various kinds of equipment.I.e. identical color has
Different color space-colour gamuts, for this reason, it is necessary to carry out color management.
Briefly, the purpose of color management is inconsistent in order to solve the problems, such as the color that each color device presents, and reaches
Effect to What You See Is What You Get.It can be interpreted as a color translation system, be defined with a kind of standard in other words, organize
With management color information, make it to be changed between distinct device and propagate.
The color management method commonly used at present is field density measuring method.In printing, the colour density of measurement, refers to
Measured respectively by three kinds of light filters of red, green, blue and obtain Huang, magenta, the density of blue or green ink.Such as, for cyan ink, it
Complementary color be yellow that is to say, that absorbing the gold-tinted in light, densimeter is exactly to reflex to blue content in human eye using measurement
Come to judge yellow ink number, have the related setting of light filter inside densimeter, when the blue or green ink of measurement, instrument automatically switches to phase
Corresponding light filter.In printing monitoring, need the density value with densimeter measurement different colours, the density value of such as cyan,
It reflects the thickness of Yellow ink light filter and the depth of color, is the foundation judging color rendering, and different colours have not
Same standard density scope, the maximum of tusche, the minimum of yellow.
Density does not have coloured concept, and when measuring primary inks K (black), C (blue), M (red), Y (yellow), densimeter utilizes
The complementary principle of complementary color, measurement is actually the bright-dark degree of colors of ink.In intaglio printing, under the deep certain feelings of version, survey
The actual content being exactly to survey the black pigment powder of primary colors of four color densities, is substantially to control inking amount, by controlling inking amount Lai accurately
Cmyk color is controlled to present.
So-called dot gain refers to, when ink from halftoning forme transfer be printed on stock when, the presence of pressure and make net
Point area increases (generally on the occasion of in some cases for negative value).If when dot area increases 4%-5%, gray scale and each color
Balance can be affected.Site increase includes mechanical site increase and optics site increase.Mechanical dot gain be subject to a lot of because
The impact of element, for intaglio printing, possible influence factor includes：The viscosity of ink, rubber roller pressure, scraper angle
Deng.
To sum up, existing field density measuring method, when electric component low key tone is inconsistent with shallow net, middle tone, is difficult to
Judgement be plate-making site or printing problem, need dependence experience go judge, subjective it is impossible to unified standard, method
Accuracy is inadequate.
Content of the invention
The technical problem to be solved in the present invention is how to improve accuracy and the standard of intaglio-printed image quality control.
In order to solve above-mentioned technical problem, the technical scheme is that a kind of intaglio-printed image quality control side of offer
Method is it is characterised in that step is：
Step 1：Make CMYK contrast colour atla
CMYK contrast colour atla be blue C, red M, yellow Y, black K tetra- color ink respectively from shallow to deep, concentration produced by 0%-100%
The presenting of raw different color；
Step 2：The printing test of CMYK contrast colour atla
CMYK contrast colour atla is carried out on the printer printing test, determine that ink uses producer, determine that typography is joined
Number, determines solid density and the dot gain rate tolerance of CMYK standard, by computer experiment several times it is ensured that dot gain
In the range of tolerable variance of standard, record 0-100 stratum reticulare density value, that is, color rendition curve；
Step 3：Make standard sample
Do beta version with the color rendition curve obtaining, repeated multiple times after, obtain stable color rendition curve；From steady
Three points are taken to control image on fixed color rendition curve, this three points shadow of correspondence image, middle tone and bloom respectively；
The every color of CMYK of image to be controlled by above three point, the density value of three point measurements is compared with standard value, such as
Fruit error, in range of tolerable variance, illustrates to reach requirement；If error is not in range of tolerable variance, illustrates not up to require, then carry out
Adjustment, until it reaches require, make standard sample.
Step 4：Plate-making Copy Preparation
Plate-making factory obtains international color consortium ICC color characteristic file and standard color curve according to standard sample, according to ICC
Color characteristic file and the plate-making Copy Preparation of standard color curve.
Preferably, in described step 3, three points of the shadow of correspondence image, middle tone and bloom are respectively：100% is close
Angle value, 50% density value, 5% density value site.
Preferably, in described step 3, make the density color lump for controlling low key tone of the every color of CMYK, in control
Between adjust density color lump, for controlling the density color lump of high light, and be arranged in order, form the combination of CMYK density color lump；By CMYK
The combination of density color lump is placed on the appropriate location in intaglio process brush material.
Preferably, the described density color lump for controlling low key tone is that net becomes the density color lump for 100% for the number.
Preferably, the described density color lump for controlling middle tone is that net becomes the density color lump for 50% for the number.
Preferably, the described density color lump for controlling high light is that net becomes the density color lump for 5% for the number.
Preferably, the position that described CMYK density color lump combination is placed in intaglio process brush material is：Intaglio printing mark's line one
Side, below mark's line side chromatography cross hairs.
The method that the present invention provides, during printing signed-off sample, three points of the measurement every color of CMYK are compared with standard density value, thus
Judge to need also to be to increase or color to be reduced, until adjusting to the range of tolerable variance of standard density, printing is by surveying every time
The density of amount tri- points of CMYK, prints consistent and printing quality thus ensure that.
The method that the present invention provides overcomes the deficiencies in the prior art, increased middle tone and the control point of shallow net, can be
Directly carve during engraving on forme, without other costs；After the lower machine of printing, direct measurement can know whether and reach requirement, keep away
Exempt from the subjectivity that Conventional visual sees sample.The method that the present invention provides, judges simple it is easy to operate, improves intaglio process map brushing
Accuracy and standard as quality control.
Brief description
Fig. 1 is CMYK colour atla schematic diagram；
Fig. 2 is the density color lump schematic diagram of three kinds of stratum reticulare compositions；
Fig. 3 is CMYK density color lump combination diagram；
Fig. 4 is that the combination of CMYK density color lump is placed on the position view in intaglio process brush material.
Specific embodiment
With reference to specific embodiment, the present invention is expanded on further.It should be understood that these embodiments are merely to illustrate the present invention
Rather than restriction the scope of the present invention.In addition, it is to be understood that after having read the content of present invention instruction, people in the art
Member can make various changes or modifications to the present invention, and these equivalent form of values equally fall within the application appended claims and limited
Scope.
A kind of intaglio-printed image method of quality control, comprises the steps：
Step 1：Make CMYK contrast colour atla
CMYK contrast colour atla be C (blue), M (red), Y (yellow), K (black) four color ink respectively from shallow to deep, concentration is by 0%-
The presenting of different color produced by 100%.
Step 2：The printing test of CMYK contrast colour atla
CMYK contrast colour atla is carried out on the printer printing test, now it needs to be determined that ink uses producer, determine print
Brush technological parameter, determines solid density and the dot gain rate tolerance of CMYK standard, by computer experiment several times, site
Expand in the range of tolerable variance of standard, record 0-100 stratum reticulare density value, that is, color rendition curve.
Step 3：Make standard sample
Do beta version with the color rendition curve obtaining, after being repeated several times, obtain stable color rendition curve, such as scheme
Shown in 1.Take three points to control image from stable color rendition curve, respectively 100% density value, 50% density value,
5% density value site, as shown in three larger round dots on Fig. 1, the shadow of correspondence image, middle tone and bloom respectively, it is to avoid
Before only measure 100% density value and occur going back virgin curve situation fluctuated, taken into account the control of shadow, middle tone and bloom
System.
During concrete operations, make from 100%, 50%, the density color lump of 5% 3 kind of stratum reticulare composition, as shown in Figure 2.This reality
Apply in example, density color lump size is the square of 5mm × 5mm, or according to practical situation and measuring instrument (as light splitting density
Instrument) pore size determine density color lump size.
As shown in figure 3, being CMYK density color lump combination diagram.CMYK density color lump combination include K (black) 100%,
50%th, 5%, C (blue) 100%, 50%, 5%, M (red) 100%, 50%, 5%, Y (yellow) 100%, 50%, 5% is it is contemplated that recessed
Version printing transparent material is more, increased white version in group, needs chromatography during printing, need to print white version measurement during measurement.
As shown in figure 4, being that CMYK density color lump combination 33 is placed on the position view in intaglio process brush material.Put position
Below intaglio printing mark's line 31 side, mark's line side chromatography cross hairs 32.In Fig. 3,34 expression intaglio printing base materials, 31 tables
Show intaglio printing scope.Certainly, the positional distance of CMYK density color lump combination 33 can be adjusted according to the parameter of different machines.
After machine under printing, the density of direct measurement CMYK density color lump three points of every color, pass through surveyed density value with
Standard value compares, if in range of tolerable variance, comes whether the every color of interpretation reaches requirement.Judge the direction of color, be to increase color
Or reduce color；Also can determine whether whether middle tone and shallow net reach standard, if need to increase density it is desired nonetheless to adjust simultaneously
Justifying roller.
By said method, adjust through continuous, prepared standard sample.
Step 4：Plate-making Copy Preparation
Plate-making factory obtains ICC (international color consortium) color characteristic file and standard color curve according to standard sample, according to
ICC color characteristic file and the plate-making Copy Preparation of standard color curve.
The control method that the present embodiment provides, it is to avoid be visually observed the subjectivity of judgement.The color management handss using
Section can make most of printer be obtained in the case of meeting standard conditions.Using a simple, general desired value, make to sentence
Disconnected become simple and clear.
Claims (7)
1. a kind of intaglio-printed image method of quality control is it is characterised in that step is：
Step 1：Make CMYK contrast colour atla
CMYK contrast colour atla be blue C, red M, yellow Y, black K tetra- color ink respectively from shallow to deep, concentration is produced by 0%-100%
The presenting of different color；
Step 2：The printing test of CMYK contrast colour atla
CMYK contrast colour atla is carried out on the printer printing test, determine that ink uses producer, determine typography parameter, really
Determine solid density and the dot gain rate tolerance of CMYK standard, by computer experiment several times it is ensured that dot gain is in mark
In accurate range of tolerable variance, record 0-100 stratum reticulare density value, that is, color rendition curve；
Step 3：Make standard sample
Do beta version with the color rendition curve obtaining, repeated multiple times after, obtain stable color rendition curve；From stable
Three points are taken to control image on color rendition curve, this three points shadow of correspondence image, middle tone and bloom respectively；
The every color of CMYK of image to be controlled by above three point, and the density value of three point measurements is compared with standard value, if by mistake
Difference, in range of tolerable variance, illustrates to reach requirement；If error is not in range of tolerable variance, illustrates not up to require, then be adjusted,
Until reaching requirement, make standard sample.
Step 4：Plate-making Copy Preparation
Plate-making factory obtains international color consortium ICC color characteristic file and standard color curve according to standard sample, according to ICC color
Characteristic file and the plate-making Copy Preparation of standard color curve.
2. as claimed in claim 1 a kind of intaglio-printed image method of quality control it is characterised in that：In described step 3, right
Three points answering shadow, middle tone and the bloom of image are respectively：100% density value, 50% density value, 5% density value site.
3. as claimed in claim 1 or 2 a kind of intaglio-printed image method of quality control it is characterised in that：Described step 3
In, make the every color of CMYK the density color lump for controlling low key tone, for control the density color lump of middle tone, be used for controlling bright
The density color lump adjusted, and be arranged in order, form the combination of CMYK density color lump；The combination of CMYK density color lump is placed on intaglio process brush material
In appropriate location.
4. as claimed in claim 3 a kind of intaglio-printed image method of quality control it is characterised in that：Described dark for controlling
The density color lump of tone is that net becomes the density color lump for 100% for the number.
5. as claimed in claim 3 a kind of intaglio-printed image method of quality control it is characterised in that：Described for control in
Between adjust density color lump be net become number for 50% density color lumps.
6. as claimed in claim 3 a kind of intaglio-printed image method of quality control it is characterised in that：Described bright for controlling
The density color lump adjusted is that net becomes the density color lump for 5% for the number.
7. as claimed in claim 3 a kind of intaglio-printed image method of quality control it is characterised in that：Described CMYK density color
The position that block combination is placed in intaglio process brush material is：Intaglio printing mark's line (31) side, mark's line side chromatography cross hairs (32)
Lower section.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107042689A (en) * | 2017-04-24 | 2017-08-15 | 北京奇良海德印刷股份有限公司 | A kind of printing color quality detecting method |
| CN107796773A (en) * | 2017-11-30 | 2018-03-13 | 上海紫江彩印包装有限公司 | A kind of control method of intaglio printing spot color half tone image quality |
| CN109949379A (en) * | 2019-03-27 | 2019-06-28 | 森大（深圳）技术有限公司 | Ink-jet printer chases after color method, device, equipment and storage medium |
| CN110385922A (en) * | 2018-04-18 | 2019-10-29 | 深圳市科彩印务有限公司 | A kind of printing process of pre-adjustment offset printing color difference |
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| EP1950038B1 (en) * | 2005-11-14 | 2011-06-15 | Mitsubishi Heavy Industries Printing & Packaging Machinery, Ltd. | Print management system, and method and program for the same |
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| CN1467566A (en) * | 2003-04-30 | 2004-01-14 | 上海龙樱彩色制版有限公司 | Colour management method in digital proofing |
| EP1950038B1 (en) * | 2005-11-14 | 2011-06-15 | Mitsubishi Heavy Industries Printing & Packaging Machinery, Ltd. | Print management system, and method and program for the same |
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| CN107796773A (en) * | 2017-11-30 | 2018-03-13 | 上海紫江彩印包装有限公司 | A kind of control method of intaglio printing spot color half tone image quality |
| CN110385922A (en) * | 2018-04-18 | 2019-10-29 | 深圳市科彩印务有限公司 | A kind of printing process of pre-adjustment offset printing color difference |
| CN109949379A (en) * | 2019-03-27 | 2019-06-28 | 森大（深圳）技术有限公司 | Ink-jet printer chases after color method, device, equipment and storage medium |
| CN109949379B (en) * | 2019-03-27 | 2021-06-18 | 深圳市汉森软件有限公司 | Color-tracing method, device, equipment and storage medium for ink-jet printer |
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| CN106379049B (en) | 2018-07-31 |
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Denomination of invention: An image quality control method for gravure printing Effective date of registration: 20220308 Granted publication date: 20180731 Pledgee: Industrial and Commercial Bank of China Limited Shanghai Putuo sub branch Pledgor: SHANGHAI ZIJIANG COLOUR PRINTING & PACKAGING Co.,Ltd. Registration number: Y2022980002284 |
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Date of cancellation: 20230110 Granted publication date: 20180731 Pledgee: Industrial and Commercial Bank of China Limited Shanghai Putuo sub branch Pledgor: SHANGHAI ZIJIANG COLOUR PRINTING & PACKAGING Co.,Ltd. Registration number: Y2022980002284 |
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Effective date of registration: 20231204 Address after: 243000 workshop No.2 and No.4, Chengdu Machinery and electronics Pioneer Park, Lianhe Road, zhengpugang New District, Maanshan City, Anhui Province Patentee after: Anhui Zijiang Composite Technology Co.,Ltd. Address before: 201108 Shanghai city Minhang District Zhuan Hing Road No. 888 Patentee before: SHANGHAI ZIJIANG COLOUR PRINTING & PACKAGING Co.,Ltd. |