CN107796773A - A kind of control method of intaglio printing spot color half tone image quality - Google Patents

A kind of control method of intaglio printing spot color half tone image quality Download PDF

Info

Publication number
CN107796773A
CN107796773A CN201711243935.2A CN201711243935A CN107796773A CN 107796773 A CN107796773 A CN 107796773A CN 201711243935 A CN201711243935 A CN 201711243935A CN 107796773 A CN107796773 A CN 107796773A
Authority
CN
China
Prior art keywords
color
site
net
density
standard
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201711243935.2A
Other languages
Chinese (zh)
Inventor
王亮
何杰
郭强
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai Zijiang Colour Printing & Packaging Co Ltd
Original Assignee
Shanghai Zijiang Colour Printing & Packaging Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shanghai Zijiang Colour Printing & Packaging Co Ltd filed Critical Shanghai Zijiang Colour Printing & Packaging Co Ltd
Priority to CN201711243935.2A priority Critical patent/CN107796773A/en
Publication of CN107796773A publication Critical patent/CN107796773A/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/31Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41CPROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
    • B41C1/00Forme preparation
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84Systems specially adapted for particular applications
    • G01N21/88Investigating the presence of flaws or contamination
    • G01N21/93Detection standards; Calibrating baseline adjustment, drift correction
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84Systems specially adapted for particular applications
    • G01N21/88Investigating the presence of flaws or contamination
    • G01N21/95Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
    • G01N21/956Inspecting patterns on the surface of objects

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Printing Methods (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)

Abstract

The present invention relates to a kind of control method of intaglio printing spot color half tone image quality, comprise the following steps:(1) monochromatic contrast colour atla is made, to Min DG and the Max DG of typical mesh point sets standard;(2) monochromatic contrast colour atla is subjected to printing test on the printer;(3) corresponding dot gain value is calculated with Murray Davis formula, ensures that it between Min DG and Max DG, obtains TVI curves and color rendition curve;Make the standard sample of monotone pattern so that the dot gain value of its typical site is between Min DG and Max DG;(4) international color consortium ICC color characteristic files and standard restoration curve are obtained according to standard sample, Copy Preparation of making a plate.This method directly carving on printing plate, without other costs, can judge simply, to improve the accuracy and standard of intaglio printing half tone image quality control in engraving.

Description

A kind of control method of intaglio printing spot color half tone image quality
Technical field
The present invention relates to gravure application field, more particularly to a kind of control of intaglio printing spot color half tone image quality Method processed.
Background technology
Halftoning typically refer on the printed matter after special processing from shallow to deep by light to dense change, be by net Point size forms to show.On printed matter picture, color and it is deep or light be to be represented by the size of site.Seeing When examining printed picture, dot area is big, and color is just deep;Dot area is small, and color is with regard to shallow.At present, to halftone pattern in other words Spot color linked network pattern, generally only controls color on the spot, and remaining accurate on the spot shallow net does not just control, due to the shadow in printing process Ring, dot gain does not avoid, and rational site increase helps to obtain stable printing quality, so site must be grasped Expand allow range with avoid vision present on difference.Meanwhile spot color only control on the spot color be it is inadequate, simultaneously The color of middle tone must be controlled.
Briefly, the purpose of half tone image control is uncontrolled in order to solve different dot gains and spot color formula System brings different visual effects.Can be described as dot gain control be in rational scope normal distribution with And spot color color is in controllable state.
So-called dot gain refers to that, when ink is needed on stock from halftoning printing, the presence of pressure makes dot surface Product increase (generally on the occasion of be in some cases negative value).If during on-line shop's area increase 4~5%, the balance of grey and each color It can be affected.Site increase includes mechanical site increase and optics site increase.Shadow of the mechanical dot gain by several factors Ring, for intaglio printing, possible influence factor includes:The viscosity of ink, rubber roller pressure, scraper angle etc..
The calculating of dot area percentage is always to continue to use Murray-Davis formula and Yule-Nielson formula.But due to The problem of n values are difficult to value be present,《GB/T 17934.1-1999 printing technologies mesh adjusts color separation film, specimen page and printing finished product Process control part 1》With《GB/T 18722-2002 printing technologies reflection density is measured and colour measurement is being printed Application in process control》It is middle to calculate dot area percentage using relative density and Murray-Davis formula.
TVI (Tone Value Increase) curve is exactly briefly the involved each contrast site expansion of color in printing The curve that (DOT GAIN) is linked to be greatly.Due to the influence in printing process, dot gain is inevitable, and rational site increases It is big to help to obtain stable printing quality, so the range of dot gain permission must be grasped.In traditional printing, typically Middle tone is controlled in 11-20% or so.The abscissa of dot gain curve is the site percentage of printing plate, and ordinate is in printing Respective point at dot gain value.
Spot color only control on the spot color be inadequate, while color on the spot is measured measure 50% among numerical value.
To sum up, existing spot color half tone image control method, only controls the color located on the spot, does not control the face of middle tone Color;When shade and shallow net, middle tone are inconsistent, it is difficult to judge to make a plate site, color matching or printing the problem of, it is necessary to Go to judge by experience, it is subjective, it can not seek unity of standard, method accuracy is inadequate.
The content of the invention
In view of problems of the prior art, an object of the present invention is to improve intaglio printing spot color half-tone picture As the accuracy of quality control, standard and stability.
To be adopted the following technical scheme that up to this purpose, the present invention:
A kind of control method of intaglio printing spot color half tone image quality, comprises the following steps:
(1) monochromatic contrast colour atla is made, the dot gain minimum M in DG of typical mesh point sets standard and site are expanded Big maximum Max DG;Wherein, the typical site includes shadow site, middle tone site and bloom site;
(2) monochromatic contrast colour atla printing test:Using black as the test ink of standard, by monochromatic contrast color obtained by (1) It is stuck on printing machine and carries out printing test, tests the dot density and field density of typical site;
(3) standard sample is made:Corresponding dot gain value is calculated with Murray-Davis formula, ensures gained dot gain value Between Min DG and Max DG, TVI curves and color rendition curve are obtained;Make the standard sample of monotone pattern so that The dot gain value of its typical site is between Min DG and Max DG;
(4) plate-making Copy Preparation:The standard sample according to obtained by (3) obtains international color consortium ICC color characteristic files and standard also Virgin curve, according to ICC color characteristic files and the plate-making Copy Preparation of standard color curve.
Preferably, step (1) the shadow site includes net point net turns into 60 as 90~100% site and net point net ~85% site.
Preferably, step (1) the middle tone site includes the site that net point net turns into 20~55%.
Preferably, step (1) the bloom site includes the site that net point net turns into 3~10%.
Preferably, the net point net of step (1) the typical site is into including 100%, 75%, 50%, 25% and 5%.It is right Three points for answering the shadow of image, middle tone and bloom are respectively:75% dot gain value, 50% dot gain value, 5% density Value expands site.Shadow, middle tone and the bloom (upper four points for being derived from TVI curves) of the control halftone pattern passed through, cover The whole level of image control has been covered, has avoided and occurs TVI curves situation fluctuated when conventional method only controls at one, take into account The control of shadow, middle tone and bloom, by three levels controls between Min DG and the Max DG.
Preferably, the tone of step (3) Plays sample is controlled by the way that spot color density color lump is placed in intaglio process brush material.
Preferably, the spot color density color lump include be arranged in order low key tone density color lump, middle tone density color lump and High light density color lump.
Preferably, the low key tone density color lump include net point net as 100% density color lump and net point net into 75% Density color lump.
Preferably, the middle tone density color lump includes the density color lump that net point net turns into 50%.
Preferably, the high light density color lump includes the density color lump that net point net turns into 5%.
Preferably, the spot color density color lump is placed on the position in intaglio process brush material, is easy to survey in real time during machine under printed material The expansion of amount monitoring site, while do not influence normally to print chromatography.
For:Intaglio printing mark's line side, mark's line side chromatography cross hairs lower section.
The method of the invention, when printing signed-off sample, first adjusting spot color, until accurate, recording ink matches simultaneously color on the spot Measure density color lump 100%Lab and 50% at Lab values, as next time print when foundation, while measurement 75%, 50%, 25%th, the dot gain at 5%, if qualified if being considered as if between Min DG and Max DG two-lines.If not examined if It is whether accurate and then adjust printing parameter according to actual conditions to look into printing parameter, if can't accurate dot gain version if up to standard Roller needs to do over again.
During secondary printing, printing oil proportion allotment when printing oil proportion strictly presses the first printing, while according to printing first When the standard of spot color 100% and 50% Lab, to measure the aberration at 100% and 50%, △ Ecmc are required at 100%<1.0 △ Ecmc are required at 50%<1.5.
Compared with prior art, the present invention at least has the advantages that:
Method provided by the invention overcomes the deficiencies in the prior art, adds the control point of middle tone and shallow net, can be Directly carving is on printing plate during engraving, without other costs;After the lower machine of printing, the △ of direct measurement dot gain data and color E values, which can be known whether, reaches requirement.It is operable by simple training, avoids subjectivity and dependence that Conventional visual sees sample Personal micro-judgment and training excessive cycle.Method provided by the invention, judge simple, easily operated, intaglio printing half The accuracy and standard of tone images quality control improve more than 80%.
Brief description of the drawings
Fig. 1 is color density also virgin curve;
Fig. 2 is monochromatic card schematic diagram;
Fig. 3 is spot color density color lump combination diagram;
Fig. 4 is the position view that the combination of spot color density color lump is placed in intaglio process brush material
Mark is illustrated as in Fig. 4:51- intaglio printing mark's lines, 52- mark's line side chromatography cross hairs, 53- spot color density colors Block combines, 54- intaglio printing base materials, the effective range of 55- printings
Embodiment
Further illustrate technical scheme below in conjunction with the accompanying drawings and by embodiment.But following reality The simple example that example is only the present invention is applied, does not represent or limit the scope of the present invention, protection model of the invention Enclose and be defined by claims.
Embodiment 1
A kind of intaglio-printed image method of quality control, comprises the following steps:
Step 1:The monochromatic colour atla in the range of the dot gain of K standards is made, as shown in Fig. 2 by net into 0~100% institute The presentation of caused different color.As shown in table 1, to the dot gain minimum M in DG of typical mesh point sets standard and site It is standard dot gain to expand maximum Max DG, Tatget Dot Gain, Tolerance:It is +/- to spread tolerance for site.
Table 1
Step 2:The printing test of K colour atlas dot gain:
Monochromatic colour atla is subjected to printing test with tusche on the printer, now it needs to be determined that ink uses producer, it is determined that Typography parameter, by computer experiment several times, dot gain measures simultaneously between Min DG and Max DG two-lines 0~100% stratum reticulare density value, that is, color density also virgin curve, as shown in Figure 1.
Step 3:Make standard sample
Plate-making factory obtains ICC (international color consortium) color characteristic files and standard color curve according to standard sample, according to ICC color characteristic files and the plate-making Copy Preparation of standard color curve.Three points are taken to carry out control figure from stable color rendition curve Picture, respectively 100%, 75%, 50%, 5% site, respectively correspondence image shadow, middle tone and bloom, taken into account shadow, The control of middle tone and bloom.
During concrete operations, the density color lump formed from 100%, 75%, 50%, 5% 3 kind of stratum reticulare is made, as shown in Figure 3. In the present embodiment, density color lump size is 5mm × 5mm square, or (is such as divided close according to actual conditions and measuring instrument Degree instrument) pore size determine density color lump size.
As shown in figure 3, it is spot color density color lump combination diagram.100%th, 75%, 50%, 5%, it is contemplated that intaglio printing Transparent material is more, adds white version in group, needs chromatography during printing, need to print white version measurement during measurement.
As shown in figure 4, for the combination of spot color density color lump to be placed on to the position view in intaglio process brush material.Put position exists The side of intaglio printing mark line 51, the lower section of mark's line side chromatography cross hairs 52.In Fig. 4,54 represent intaglio printing base material, and 55 represent The effective range of printing.The positional distance of certain spot color density color lump combination 53 can be adjusted according to the parameter of different machines.
After machine under printing, first adjust the color of spot color and record at the Lab values and 50% at spot color proportioning and 100% Lab values, then measure the dot gain value of density color lump per four points of color, the dot gain value surveyed whether Min DG with Between Max DG two-lines, whether the dot gain for carrying out interpretation color reaches requirement.It also can determine whether that middle tone and shallow net are simultaneously It is no to reach standard, if to need to adjust printing parameter, it is desired nonetheless to adjust roller.
During secondary printing, matched colors according to the printing oil proportion printed first, at Lab and 50% at the spot color 100% of record Lab values color standard input spectrophotometric color measurement instrument, the color at 100% is first measured after lower machine, then measure the Lab values at 50%, Ask and △ Ecmc are required at 100%<1.0, △ Ecmc are required at 100%<1.5, color measures dot gain value after reaching requirement, is It is no between Min DG and Max DG two-lines.
Embodiment 2
Step is same as Example 1, unlike, the site of Selection of Net Points 100%, 60%, 20%, 3% of step 3.
Embodiment 3
Step is same as Example 1, unlike, the site of Selection of Net Points 100%, 85%, 55%, 10% of step 3.
Embodiment 4
Step is same as Example 1, unlike, the site of Selection of Net Points 96%, 70%, 35%, 8%, 4% of step 3.
Embodiment 5
Step is same as Example 1, unlike, the Selection of Net Points 100% of step 3,95%, 80%, 70%, 55%, 25%th, 10%, 5%, 2% site.
Method provided in an embodiment of the present invention adds the control point of middle tone and shallow net for halftone pattern, while The color control of 100% site on the spot and the site of middle tone 50% is added when printing again, it is ensured that on the spot and shallow per batch Net color it is correct.It can directly be carved in engraving on printing plate, without other costs, overcome the deficiencies in the prior art;Printing After lower machine, direct measurement, which can be known whether, reaches requirement, avoids the subjectivity that Conventional visual sees sample.And judge simply, easily In operation, the accuracy and standard of intaglio printing half tone image quality control improve more than 80%.
Applicant states that the present invention illustrates the detailed process equipment of the present invention and technological process by above-described embodiment, But the invention is not limited in above-mentioned detailed process equipment and technological process, that is, it is above-mentioned detailed not mean that the present invention has to rely on Process equipment and technological process could be implemented.Person of ordinary skill in the field it will be clearly understood that any improvement in the present invention, The addition of equivalence replacement and auxiliary element to each raw material of product of the present invention, selection of concrete mode etc., all fall within the present invention's Within the scope of protection domain and disclosure.

Claims (10)

1. a kind of control method of intaglio printing spot color half tone image quality, it is characterised in that comprise the following steps:
(1) monochromatic contrast colour atla is made, to the dot gain minimum M in DG and dot gain of typical mesh point sets standard most Big value Max DG;Wherein, the typical site includes shadow site, middle tone site and bloom site;
(2) monochromatic contrast colour atla printing test:Using black as the test ink of standard, by monochromatic contrast color obtained by step (1) It is stuck on printing machine and carries out printing test, tests the dot density and field density of typical site;
(3) standard sample is made:Corresponding dot gain value is calculated with Murray-Davis formula, ensures that gained dot gain value exists Between Min DG and Max DG, TVI curves and color rendition curve are obtained;Make the standard sample of monotone pattern so that its The dot gain value of typical site is between Min DG and Max DG;
(4) plate-making Copy Preparation:The standard sample according to obtained by step (3) obtains international color consortium ICC color characteristic files and standard also Virgin curve, according to ICC color characteristic files and the plate-making Copy Preparation of standard color curve.
2. the method as described in claim 1, it is characterised in that step (1) the shadow site include net point net turn into 90~ 100% site and net point net turn into 60~85% site.
3. method as claimed in claim 1 or 2, it is characterised in that step (1) the middle tone site turns into including net point net 20~55% site;
Preferably, step (1) the bloom site includes the site that net point net turns into 3~10%.
4. the method as described in any one of claims 1 to 3, it is characterised in that step (1) the typical net point net into including 100%th, 75%, 50%, 25% and 5%.
5. the method as described in any one of Claims 1 to 4, it is characterised in that the tone of step (3) Plays sample passes through specially Color density color lump is placed in intaglio process brush material and controlled.
6. method as claimed in claim 5, it is characterised in that the low key tone that the spot color density color lump includes being arranged in order is close Spend color lump, middle tone density color lump and high light density color lump.
7. method as claimed in claim 6, it is characterised in that the low key tone density color lump, which includes net point net, turns into 100% Density color lump and net point net turn into 75% density color lump.
8. method as claimed in claim 6, it is characterised in that the middle tone density color lump includes net point net as 50% Density color lump.
9. method as claimed in claim 6, it is characterised in that the high light density color lump include net point net as 5% it is close Spend color lump.
10. the method as described in any one of claim 5~9, it is characterised in that the spot color density color lump is placed on intaglio printing Position in material is:Intaglio printing mark's line side, mark's line side chromatography cross hairs lower section.
CN201711243935.2A 2017-11-30 2017-11-30 A kind of control method of intaglio printing spot color half tone image quality Pending CN107796773A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201711243935.2A CN107796773A (en) 2017-11-30 2017-11-30 A kind of control method of intaglio printing spot color half tone image quality

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201711243935.2A CN107796773A (en) 2017-11-30 2017-11-30 A kind of control method of intaglio printing spot color half tone image quality

Publications (1)

Publication Number Publication Date
CN107796773A true CN107796773A (en) 2018-03-13

Family

ID=61538326

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201711243935.2A Pending CN107796773A (en) 2017-11-30 2017-11-30 A kind of control method of intaglio printing spot color half tone image quality

Country Status (1)

Country Link
CN (1) CN107796773A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109270089A (en) * 2018-10-31 2019-01-25 杭州智数创联科技有限公司 A kind of method of quick obtaining halftone paper printing dot gain
JP2020091219A (en) * 2018-12-06 2020-06-11 大日本印刷株式会社 Inspection performance diagnosing device, inspection performance diagnosing method, program for inspection performance diagnosing device, and inspection performance diagnosing system
CN112080955A (en) * 2020-09-30 2020-12-15 杭州天睿丝绸有限公司 High-permeability digital jet printing process for dark viscose fabric
CN112918074A (en) * 2021-01-21 2021-06-08 上海出版印刷高等专科学校 Correction method for printing equipment
CN113500849A (en) * 2021-06-16 2021-10-15 广州爱科琪盛塑料有限公司 Resin plate printing application process
CN113776667A (en) * 2021-09-30 2021-12-10 杭州日报报业集团盛元印务有限公司 Offset printing special color ink blending method based on ink LAB value
CN114714784A (en) * 2022-03-03 2022-07-08 丝艾工业科技(海安)有限公司 Method for manufacturing printing curve
WO2024011659A1 (en) * 2022-07-15 2024-01-18 浙江工业大学 Color density characteristic curve collection method for printing
US12075017B2 (en) 2022-07-15 2024-08-27 Zhejiang University Of Technology Method for acquiring color density characteristic curve in printing

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104339838A (en) * 2014-10-08 2015-02-11 中山火炬职业技术学院 Printing quality evaluation and process control method
CN106379049A (en) * 2016-08-30 2017-02-08 上海紫江彩印包装有限公司 Gravure printing image quality control method

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104339838A (en) * 2014-10-08 2015-02-11 中山火炬职业技术学院 Printing quality evaluation and process control method
CN106379049A (en) * 2016-08-30 2017-02-08 上海紫江彩印包装有限公司 Gravure printing image quality control method

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109270089B (en) * 2018-10-31 2020-11-13 杭州智数创联科技有限公司 Method for rapidly acquiring printing dot enlargement of coated paper
CN109270089A (en) * 2018-10-31 2019-01-25 杭州智数创联科技有限公司 A kind of method of quick obtaining halftone paper printing dot gain
JP2020091219A (en) * 2018-12-06 2020-06-11 大日本印刷株式会社 Inspection performance diagnosing device, inspection performance diagnosing method, program for inspection performance diagnosing device, and inspection performance diagnosing system
JP7268341B2 (en) 2018-12-06 2023-05-08 大日本印刷株式会社 Inspection performance diagnostic device, inspection performance diagnostic method, program for inspection performance diagnostic device, and inspection performance diagnostic system
CN112080955B (en) * 2020-09-30 2022-11-18 杭州天睿丝绸有限公司 High-permeability digital jet printing process for dark viscose fabric
CN112080955A (en) * 2020-09-30 2020-12-15 杭州天睿丝绸有限公司 High-permeability digital jet printing process for dark viscose fabric
CN112918074A (en) * 2021-01-21 2021-06-08 上海出版印刷高等专科学校 Correction method for printing equipment
CN113500849B (en) * 2021-06-16 2023-01-17 广州爱科琪盛塑料有限公司 Resin plate printing application process
CN113500849A (en) * 2021-06-16 2021-10-15 广州爱科琪盛塑料有限公司 Resin plate printing application process
CN113776667A (en) * 2021-09-30 2021-12-10 杭州日报报业集团盛元印务有限公司 Offset printing special color ink blending method based on ink LAB value
CN113776667B (en) * 2021-09-30 2024-02-09 杭州日报报业集团盛元印务有限公司 Offset printing spot color ink blending method based on ink LAB value
CN114714784A (en) * 2022-03-03 2022-07-08 丝艾工业科技(海安)有限公司 Method for manufacturing printing curve
WO2024011659A1 (en) * 2022-07-15 2024-01-18 浙江工业大学 Color density characteristic curve collection method for printing
US12075017B2 (en) 2022-07-15 2024-08-27 Zhejiang University Of Technology Method for acquiring color density characteristic curve in printing

Similar Documents

Publication Publication Date Title
CN107796773A (en) A kind of control method of intaglio printing spot color half tone image quality
DE69932087T2 (en) VISUAL CALIBRATION
RU2552503C2 (en) Quality control method of multicolour printing with primary colours
CN103057289B (en) A kind of fine offset printing method
JPS60176765A (en) Method and device for evaluating quality of printing and controlling supply of ink
US8451503B2 (en) Print quality control method
CN106541702A (en) A kind of printing quality corrects system and method
CN104742516B (en) High-power image dot coverage rate digital measuring method suitable for whole printing process
CN111267467B (en) Offset printing standard test plate and production and application method thereof
CN105716995B (en) A method of determining best printing density
CN106379049B (en) A kind of intaglio-printed image method of quality control
CN107009734A (en) Facing paper digital printing Color control and restoring method
CN103358684A (en) Manuscript printing quality control method for spot-color ICC (international color consortium) curve proofing
US20110188089A1 (en) Method and arrangement for automatic verification of the visually perceived color impression of multicolor color images
CN105082857B (en) A kind of high simulated artistic paint ceramic tile clone method
CN106157265B (en) The digital net hanging method and system of figure screen are hidden based on high-fidelity
Miljković et al. The impact of printing substrate on dot deformation in flexography
CN106157336B (en) Digital net hanging method and system are schemed based on directly modified high-fidelity hiding
EP1862307A2 (en) Method for calculating correction values in the colour control or colour adjustment for a printing press
CN102256042A (en) Image processing method and image processing apparatus
EP1285529B1 (en) Calibrating printing machines
CN106671594B (en) A kind of method of determining printing three primary colors density
JP2023182721A (en) Method for determining match factor with respect to color match of created print product with predetermined target brightness
JPH07304161A (en) Method for determining allowable fluctuation range for controlling or adjusting application of ink in printing press
CN103144430B (en) Inking monitor for printing machine

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20180313