CN105262930A - ICC file manufacturing method of converting RGB color mode to CMYK color mode - Google Patents

ICC file manufacturing method of converting RGB color mode to CMYK color mode Download PDF

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Publication number
CN105262930A
CN105262930A CN201510685038.1A CN201510685038A CN105262930A CN 105262930 A CN105262930 A CN 105262930A CN 201510685038 A CN201510685038 A CN 201510685038A CN 105262930 A CN105262930 A CN 105262930A
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icc
file
cmyk
black
channel
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沈志伟
周项立
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Beijing Sunrainbow Culture And Arts Development Co Ltd
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Beijing Sunrainbow Culture And Arts Development Co Ltd
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/46Colour picture communication systems
    • H04N1/56Processing of colour picture signals
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/46Colour picture communication systems
    • H04N1/56Processing of colour picture signals
    • H04N1/60Colour correction or control
    • H04N1/6002Corrections within particular colour systems
    • H04N1/6008Corrections within particular colour systems with primary colour signals, e.g. RGB or CMY(K)

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Color Image Communication Systems (AREA)

Abstract

Provided is an ICC file manufacturing method of converting an RGB color mode to a CMYK color mode, comprising: using the ICC file editor in an ICC file generator to open an ICC file, and modifying the ICC file with a 360% printing ink amount, wherein changing the output of the C channel, the M channel, the Y channel and the K channel of CMYK in inputting 100% to be 95.0, 90.0, 90.0 and 85.0; modifying gray balance data, and respectively adjusting the M and Y channels to be 19 when the C channel is 25; adjusting the M and Y channels to be 40 when the C channel is 50; respectively adjusting the M and Y channels to be 64 when the C channel is 75; and determining employing long black or short black to generate black print according to a print object, and finishing if meeting color picture inspection standards, or else returning. The method can manufacture ICC conversion files suitable for Chinese printing environments, and is used for domestic printing environments to greatly reduce color loss in color transmission processes on different devices.

Description

The ICC documenting method of CMYK color mode is transformed into from RGB color mode
Technical field
The invention belongs to the image processing field such as traditional printing, digital printed, fast print, photography and advertisement design; Particularly relate to a kind of manufacture method RGB color mode being transferred to the ICC color description file of CMYK color mode.
Background technology
Can our photographer, designer client often propose: the color that the image why we provide is obtained after printing is different from their Expected Results? why can colour cast? why is the color of printing always not as the good color of display? so they express surprise to the color of printing and disappointed, thus meaning with thumb down, require to return goods, even do not pay the bill.
Therefore how converting the RGB figure in photographer, designer's hand to print CMYK figure is a very urgent problem solved.Before a graceful CMYK figure comes from photographer, painter, artist, designer and printing house's print, the printing engineer of department and the joint efforts of all relevant staff.
Current photographer, designer issue the most electronics original copy changing rgb color pattern from transmission or reflextion copy into of picture of printing, and the RGB figure of photographer is converted to CMYK figure from becoming CMYK figure to change into the film scanning of photographer with scanner by the mask-making technology flow process of printing.So the color changing into the CMYK figure that printing finished product shows that RGB schemes color information showed over the display correct has become Yin Qian department urgent problem.
RGB figure R (red), G (green), B (indigo plant) three primary colors press different proportion composition, if 8 RGB schemes, then the color of each passage of R, G, B is the scope from 0 to 255, and namely expressible color has 256 × 256 × 256=16777216 kind.Photographer is RGB figure with the figure that digital camera is taken, and that designer show with display is also the figure of use RGB mode.The feature of RGB figure: colour gamut is large, saturation is high, levels are rich, contrast scope are large, slight level enriches.The colour gamut of conventional RGB has: sRGB, AdobeRGB, ProPhoto etc., sRGB is mainly used to the colour gamut describing general display, AdobeRGB is mainly used to the colour gamut describing high-grade display and digital camera, and ProPhoto is mainly used to the colour gamut describing high-grade digital camera and DIGITAL-MODUL-R.
Fig. 1 respectively with Lab colour model be presented at L=25,50,75 time these three colour gamuts situation, wherein transverse axis represents a axle, the longitudinal axis represents b axle, and wherein 1. number line represents that colour gamut, 2. number line of sRGB represent that colour gamut, 3. number line of AdobeRGB represent the colour gamut of ProPhoto.
Lab colour model is made up of lightness (L) and a about color, b tri-key elements.L represents lightness (Luminosity), and a represents the scope from carmetta to green, and b represents the scope from yellow to blueness.The codomain of L by 0 to 100, L=50 time, be just equivalent to 50% black; The codomain of a and b is all by+127 to-128, and wherein+127a is exactly red, just becomes green when being gradually transitioned into-128a; Same principle ,+127b is yellow, and-128b is blue.All color relations formed with the mutual change of these three values.Such as, the Lab value of one piece of color is L=100, a=30, b=0, and this block color is exactly pink.
CMYK figure is that add that K (black) forms, conventional presses and digital printer are all that the color that have employed CMYK is printed with C (green grass or young crops), M (magenta), Y (Huang) three primary colors by different proportion.The colour gamut of conventional CMYK is the colour gamut that international standard ISO12647-2 specify, ICC document European used be CoatedFORGRA39, the U.S. be CoatedSWOP2006, that Japanese is JapanColor2001Coated.
Here in order to compare with RGB colour gamut, depict two kinds of RGB colour gamuts in the gamut map of each CMYK in fig. 2 simultaneously, wherein, the CMYK colour gamut colour gamut of what 1. number line represented that colour gamut, 2. number line of AdobeRGB represent that colour gamut, 3. number line of sRGB represent is 1 class paper and 2 class paper in international standard ISO12647-2, be from left to right respectively L=25,50 and 75 colour gamut.
Can find from Fig. 1 and Fig. 2: the colour gamut of RGB figure and the colour gamut of CMYK figure differ very large.Comparing with CMYK colour gamut by AdobeRGB colour gamut, is all that RGB color is larger than the colour gamut of CMYK color when can find nearly all; Compare with CMYK colour gamut by sRGB colour gamut, can find that most of RGB color is larger than the colour gamut of CMYK color, but when brightness about L=50, the green grass or young crops in CMYK colour gamut and blue color larger than the colour gamut of RGB color.
Be converted in the process of CMYK figure at current RGB figure, various image processing software and workflow can be used, and have respective feature separately.But the most frequently used Photoshop software still using Adobe.
Photoshop software is used to open a RGB figure, do you how RGB figure is converted to CMYK figure? be generally now in the pull-down menu of edit menu, selection is converted to configuration file, configuration file needed for selecting by pull-down menu in source space, object space after interface occurs, configuration file is exactly image color conversion described file (ICC file), and the concrete form selected as shown in Figure 3 here.In source space configuration file, wherein select the ICC file that will transform RGB, such as sRGB.ICC, selects the CMYK.ICC printed in object space.
Being converted to CMYK figure by just completing RGB figure after determining, seeming very simple, but be actually a very complicated thing.Here key is that printing ICC file that selection one is correct is as configuration file.
ICC is the english abbreviation of international color consortium InternationalColorConsortium, the ICC file that ICC specifies, English is called ICCColorProfile, be exactly device color characteristic file (image color conversion described file) in fact, the file of the Some features of different equipment in color performance is namely described, so image color conversion described file is exactly solve the color conversion between distinct device, ICC file is the basis that color management can be implemented simultaneously, there is ICC file, the various software (as photoshop) with color management functionality just can according to the color feature of distinct device (RGB and cmyk data), accurately demonstrate color conversion on different devices and change.Also can allow simultaneously during color transmittance process on different devices, colour loss is dropped to minimum.
If the ICC file of existing various printing standard in seletion calculation machine system, as shown in Figure 4: the ICC file having European CoatedFORGRA39, European EuroscaleCoated, Japanese JapanColor2001Coated, U.S. U.S.SheetfedCoatedV2 etc. the standard formulated by international standard ISO12647-2 here respectively, but use the demand often not meeting domestic correspondent, reason is that paper, ink, plate, fountain solution and blanket etc. raw and auxiliary material and standard formulation area (such as Europe) that we use are different.If preferably there is the ICC of we oneself printing, because it reflects our oneself printed state domestic, but we ICC of printing is only the situation reflecting certain printing machine at that time, can not be used on all periods and all boards.The present invention will utilize international standard again in conjunction with our printing state, and amendment international standard ICC, form the ICC file being applicable to our printing environment, this is our task of top priority.
Summary of the invention
Main purpose of the present invention is to provide a kind of ICC documenting method being transformed into CMYK color mode from RGB color mode, the color changing into the CMYK figure that printing finished product shows that its color information that can ensure that RGB figure is showed over the display is as much as possible correct.
For achieving the above object, the present invention takes following design:
Be transformed into an ICC documenting method for CMYK color mode from RGB color mode, its method is as follows:
A) open the ICC file editor in ICC file generation software, open an ICC file with ICC file editor;
B) be 352% ~ 368% to revise ICC file by total ink in ICC editing machine, wherein, change the C-channel of CMYK, M passage, Y passage and the K passage output correspondence when input 100% into 92.0 ~ 97.0,87.0 ~ 92.0,87.0 ~ 92.0 and 80.0 ~ 87.0 respectively;
C) in ICC file editor, revise the grey balance data of ICC file, when C-channel is 25, respectively M, Y passage is transferred to 19; When C-channel is 50, respectively M, Y passage is transferred to 40; When C-channel is 75, respectively M, Y passage is transferred to 64; Wherein, M, Y passage transfers the error of value range is ± 2%;
D) check that amended ICC file meets the requirements by coloured image check criteria? meet, terminate, otherwise return step C;
E) generation deciding black print according to printing object adopts longly to adjust black or minor is black? as black in adopted minor, according to the feature of printing object, confirm that the scope of black print starting point is 30-40%; As adopted, long tune is black directly enters next step;
F) check that amended ICC file meets the requirements by coloured image check criteria? meet, terminate this time to make, otherwise return step e.
Describedly be transformed into the ICC documenting method of CMYK color mode from RGB color mode, after completing steps C and step e, all by coloured image check criteria inspection amendment result, as met the requirements, then enter next step, otherwise return former step.
Describedly be transformed into the ICC documenting method of CMYK color mode from RGB color mode, ICC file used is the one in the following files: 1. European standard CoatedFORGRA39,2. the CoatedSWOP2006 of the U.S., the 3. JapanColor2001Coated of Japan.
Describedly be transformed into the ICC documenting method of CMYK color mode from RGB color mode, in described steps A, the ICC Document Editing software adopted is the professional color management software of ProfileMaker, opens ICC file with the ProfileEditer editing machine in ProfileMaker.The preferred CoatedFOGRA39C of ICC file opened.
Describedly be transformed into the ICC documenting method of CMYK color mode from RGB color mode, in described step e, adopt when described printing object is traditional Chinese Painting, ink and wash long adjust black; Described printing object be personage, landscape, oil painting, implements and single product time adopt minor black.
Describedly be transformed into the ICC documenting method of CMYK color mode from RGB color mode, in described method step B, be 360% to revise ICC file by total ink in ICC editing machine, wherein, change the output when input 100% of the C-channel of CMYK, M passage, Y passage and K passage into 95.0 respectively, 90.0,90.0 and 85.0.
Another object of the present invention is to provide a kind of application of the ICC file made by said method.
For achieving the above object, the present invention takes following design:
A kind of application of the ICC file utilizing method described in claim 1 to 7 to make, the Photoshop image processing software of Adobe company is installed in the computer control system for printing, and the ICC file of the international printing standard of the JapanColor2001Coated being built-in with the CoatedFORGRA39 in Europe, the CoatedSWOP2006 of the U.S. and Japan; It is characterized in that: use the Photoshop software of Adobe company to open a RGB figure, in the drop-down menu of edit menu, select " being converted to configuration file ", with the ICC file through editor that pull-down menu selects ICC software for editing ProfileEdit to preserve in object space configuration file, this ICC file through editor is the ICC file utilizing method described in claim 1 to 6 to make, by " determination ", then this RGB figure is converted to the CMYK figure of applicable Chinese printing environment.
The manufacture method that RGB color mode of the present invention transfers the ICC characteristic file of CMYK color mode to breaks the monopolization of America and Europe and Japanese printing industry professional institution ICC manufacture method, the ICC convert file of applicable Chinese printing environment can be made by the method, make up this domestic blank.
Advantage of the present invention is:
1., in domestic printing environment, can allow during color transmittance process on different devices and colour loss is significantly reduced;
2. be applicable to multiple domestic printing environment.
Accompanying drawing explanation
Fig. 1 be presented at respectively L=25,50,75 time RGB tri-gamut map.
Fig. 2 be presented at respectively L=25,50,75 time CMYK colour gamut and RGB colour gamut comparison diagram.
Fig. 3 selects required configuration file schematic diagram when being and using Photoshop software RGB figure to be converted to CMYK figure in prior art.
Fig. 4 is the ICC file directory of the various printing standards prepared in existing computer system.
Fig. 5 is that the present invention is transformed into the ICC documenting procedure step block flow diagram of CMYK color mode from RGB color mode.
Fig. 6-1, Fig. 6-2, Fig. 6-3 are CoatedFOGRA39.ICC, CoatedSWOP2006 and JapanColor2001Coated file interface figure (state of international standard is also the state before amendment ICC file) for the ProfileEditer in ProfileMaker opens respectively.
Fig. 7 is the file interface figure after the present invention revises total ink in ICC file editor.
Fig. 8 is the present invention's amended grey balance curve chart in ICC editing machine.
Fig. 9 is the present invention's amended black print curve chart in ICC editing machine.
(in Fig. 6 to Fig. 9, what abscissa inputted is CMYK value, and what ordinate exported is CMYK value, and numerical value is 0-100).
Figure 10 is the coloured image checking conversion results in the inventive method.
Figure 11 transfers colour gamut when CMYK schemes and the change schematic diagram of curve to by RGB for the CMYRGB step-wedge color lump shown in Figure 11 of the present invention.
Figure 12 is the homemade grey balance step-wedge schematic diagram of the present invention.
Figure 13 is with former CoatedFOGRA39 as configuration file, the RGB figure shown in Figure 13 is converted to the grey balance curve of CMYK figure.
Figure 14 be with the present invention amendment CoatedFOGRA39 as configuration file, the RGB figure shown in Figure 13 is converted to the grey balance curve of CMYK figure.
Figure 15 is with invention has been the long transformation result schematic diagram adjusting black ICC configuration file.
Below in conjunction with drawings and the specific embodiments, the present invention is described further.
Embodiment
The ICC documenting method that the present invention is transformed into CMYK color mode from RGB color mode is mainly modified to the international standard ICC file called by amendment total ink, amendment grey balance data and amendment black print curve, generates the ICC file that can be applicable to China printing.
Selected for total ink: the ink that printing adopts usually is blue or green, pinkish red, yellow, black (Cyan, Magenta, Yellow, Klack) four look, if we do not control four color inks, each ink adopts 100%, and so printing-ink total amount is exactly 400%.But when printing, due to the restriction of paper, printing machine and material, image, text printout will be spent, detail portion branch sticks with paste dead, do not have a kind of paper can accept and print off the ink of 400%, but, measure with total ink of 330% on earth, or total ink amount of 360%, see different paper and dissimilar living-article.In addition, each passage of C, M, Y, K will select maximum quantity of ink respectively, and such as selection C is 95%, M is 90%, Y is 90%, K is 85%, total ink amount is 360%, can make full use of our existing printing condition like this, the contrast of printed matter is maximum, and color saturation is also best.Therefore the present invention's design is 352% ~ 368% to revise ICC file by total ink, and the maximum quantity of ink of CMYK is respectively 92.0 ~ 97.0,87.0 ~ 92.0,87.0 ~ 92.0 and 80.0 ~ 87.0; Wherein, preferably embodiment is: the maximum quantity of ink being 360%, CMYK by total ink is respectively 95%, 90%, 90%, 85% to revise ICC file.
Establishment for grey balance data: grey balance should refer to that C, M, Y tri-color versions generate neutral gray in the ratio of different dot area on printed matter.Black should be obtained according to the superimposed of color theory C, M, Y three-colour printing ink maximum saturation.In like manner, the superimposed grey that also should produce different lightness of the equivalent of three-colour printing ink different saturation.But the ink used due to reality also also exists defect ink manufacture being difficult to overcome in form and aspect, saturation and lightness, such that the three-colour printing ink of equivalent is superimposed can not obtain neutral ash.In order to present the grey of different lightness accurately after making three-colour printing ink superimposed, must according to the characteristic of ink, change the dot area proportioning of three-colour printing ink, it is very important for realizing grey balance to color dub.
According to the regulation of international standard ISO12647-2 about grey balance.When 1/4 tone (shallow tune), the dot area of C, M, Y is 25,19,19, be the dot area of C, M, Y when middle tone be 50,40,40, when 3/4 tone (shadow), the dot area of C, M, Y is 75,64,64, as long as the present invention meets above-mentioned requirements, grey requirement during printing just can be met.
For amendment black print curve (generation of black print is that the long tune of employing is black or minor is black): if minor is black, black print starting point be confirmed.
The usage of black print is such, when adopting C, M, Y three-color halftone to be main in common traditional color separation situation, be auxiliary with black print, and black print minor is black, compensate and superpose the shortcoming not reaching black, for the printing of personage, landscape, oil painting, implements, single product by three looks.Another kind is based on black print, and three looks are auxiliary, with the black replacement of equivalence from high light to shadow by C, M, Y tri-look superpose the ash that forms and the part close to ash, uses long tune black print, for the printing of traditional Chinese Painting, ink and wash for compensating black print ink amount.
The ICC documenting that the present invention forwards CMYK figure to from RGB figure generally can adopt the software of ICC Document Editing to carry out this work.A preferred embodiment of the present invention (other printing condition also can with the method) adopts the ProfileEditer in software Pro fileMaker, modifies in the basis of CoatedFOGRA39.
See Fig. 5, the present invention is transformed into ICC documenting method one preferred embodiment (being applicable to the printing of personage, landscape, oil painting, implements and single product) of CMYK color mode detailed process from RGB color mode is:
Step one, ProfileEditer (ICC file editor) first in software Pro fileMaker (ICC file generator) opens the ICC file CoatedFOGRA39 that will revise, and (Fig. 6-1, Fig. 6-2, Fig. 6-3 are CoatedFOGRA39, CoatedSWOP2006 and JapanColor2001Coated file interface figure for the ProfileEditer in ProfileMaker opens respectively, this is the state of international standard, is also the state before amendment ICC file.The present embodiment is only made an amendment for CoatedFOGRA39), can see that its total ink is 330% (it arranges state for original) in grey balance (GrayBalance), therefore our requirement is not met, as in Figure 6-1, it is 91.4 that such as C-channel exports when input 100%, undesirable.
Step 2, revises total ink in ICC editing machine, makes its result identical with the numerical value that we set, as shown in Figure 7.C-channel exports when input 100% and changes 95.0, M passage into and export when input 100% and change 90.0, Y passage into and export when input 100% and change 90.0, K passage into and export when input 100% and change 85.0 into, meets the requirements.
Step 3, grey balance data are revised: the dot area confirming C, M, Y when 1/4 tone (shallow tune) is 25,19,19 in ICC file editor, be the dot area of C, M, Y when middle tone be 50,40,40, when 3/4 tone (shadow), the dot area of C, M, Y is 75,64,64, by the grey balance curve of this requirement amendment ICC file.In ICC editing machine, amended grey balance curve as shown in Figure 8.When C-channel is 25, respectively M, Y passage is transferred to 19, when C-channel is 50, respectively M, Y passage is transferred to 40, when C-channel is 75, respectively M, Y passage is transferred to 64.
Step 4, revises black print curve: select black print starting point to be 40% in ICC file editor.Amended black print curve as shown in Figure 9.
Step 5, checks conversion results with the coloured image shown in Figure 10: coloured image check criteria is as follows:
When 1. selecting gamut warnings in the apparent maturity of PhotoShop, all turns of complete CMYRGB color lumps are all in corresponding gamut range;
2. all turns of colored color lumps of complete CMYRGB do not comprise black;
3. check that the contrast of CMYRGB step-wedge color lump is normal, reverse without level.
Figure 11 describes the CMYRGB step-wedge color lump shown in this Figure 10 and transfers colour gamut when CMYK schemes and the change of curve to by RGB.
Below, be utilize the present invention revise the ICC file of making and utilize former ICC file (CoatedFOGRA39) to convert the grey balance step-wedge RGB figure shown in Figure 12 the contrast of the grey balance curve of CMYK figure to:
The numerical value of the grey balance step-wedge figure shown in Figure 12 is as shown in table 2:
The numerical value with grey balance step-wedge figure tested by table 2
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22
R 255 240 228 216 204 192 180 168 156 144 132 120 108 96 84 72 60 48 36 24 12 0
G 255 240 228 216 204 192 180 168 156 144 132 120 108 96 84 72 60 48 36 24 12 0
B 255 240 228 216 204 192 180 168 156 144 132 120 108 96 84 72 60 48 36 24 12 0
As with former CoatedFOGRA39 as configuration file, convert the RGB figure shown in Figure 12 the grey balance curve of CMYK figure to as shown in figure 13.
Revise the ICC file of making as configuration file with the present invention, convert the RGB figure shown in Figure 12 the grey balance curve of CMYK figure to as shown in figure 14.This ICC configuration file is widely used in the RGB figure such as personage, landscape, oil painting, implements, Dan Pin and transfers CMYK figure to.
Its numerical value is as shown in table 3:
RGB and the CMYK numerical value with grey balance step-wedge figure tested by table 3
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22
R 255 240 228 216 204 192 180 168 156 144 132 120 108 96 84 72 60 48 36 24 12 0
G 255 240 228 216 204 192 180 168 156 144 132 120 108 96 84 72 60 48 36 24 12 0
B 255 240 228 216 204 192 180 168 156 144 132 120 108 96 84 72 60 48 36 24 12 0
C 0 8 13 19 24 29 35 38 43 47 51 56 60 63 67 70 74 78 82 88 96 100
M 0 6 10 15 18 22 27 31 34 38 42 46 51 55 60 64 69 74 79 85 92 95
Y 0 7 11 16 20 24 27 31 35 38 42 46 52 55 59 64 69 74 79 86 92 95
K 0 0 0 0 0 0 0 0 2 6 11 16 22 29 37 45 54 64 73 82 89 91
Because traditional Chinese Painting, ink and wash are with Mo Weizhu, be auxiliary with look, therefore need to adjust black embodiment with long.Therefore done the ICC configuration file that long tune is black, transformation result as shown in figure 15:
Can find out through contrast: if directly quote former CoatedFOGRA39 as configuration file, the CMYK figure converted like this has some problems.Such as black print is that long tune is black, but general photography class photo, such as personage and landscape, the implements, general merchandise photo etc. of oil painting, historical relic class, in press generally adopt minor black; And for example the site of the most stain of figure is C=88%, M=78%, Y=63%, K=100%, and total ink amount equals 329.If use this numerical value, printing off under existing printing condition is not black, may be blue-green.
And can well be addressed this problem by design of the present invention.
Foregoing detailed description the present invention is with the method for preferred embodiment, in a word, to correspond to 92.0 ~ 97.0 respectively by the maximum quantity of ink of total ink 352% ~ 368%, CMYK, 87.0 ~ 92.0, carry out modulation modification ICC file in the scope of 87.0 ~ 92.0 and 80.0 ~ 87.0, all can reach object of the present invention.
The various embodiments described above can in addition some changes under not departing from the scope of the present invention, therefore above explanation comprises and should be considered as exemplary, and is not used to the protection range limiting the present patent application patent.

Claims (8)

1. be transformed into an ICC documenting method for CMYK color mode from RGB color mode, it is characterized in that method is as follows:
A) open the ICC file editor in ICC file generation software, open an ICC file with ICC file editor;
B) be 352% ~ 368% to revise ICC file by total ink in ICC editing machine, wherein, change the C-channel of CMYK, M passage, Y passage and the K passage output correspondence when input 100% into 92.0 ~ 97.0,87.0 ~ 92.0,87.0 ~ 92.0 and 80.0 ~ 87.0 respectively;
C) in ICC file editor, revise the grey balance data of ICC file, when C-channel is 25, respectively M, Y passage is transferred to 19; When C-channel is 50, respectively M, Y passage is transferred to 40; When C-channel is 75, respectively M, Y passage is transferred to 64; Wherein, M, Y passage transfers the error of value range is ± 2%;
D) check that amended ICC file meets the requirements by coloured image check criteria? meet, terminate, otherwise return step C;
E) generation deciding black print according to printing object adopts longly to adjust black or minor is black? as black in adopted minor, according to the feature of printing object, confirm that the scope of black print starting point is 30-40%; As adopted, long tune is black directly enters next step;
F) check that amended ICC file meets the requirements by coloured image check criteria? meet, terminate this time to make, otherwise return step e.
2. manufacture method as claimed in claim 1, is characterized in that: after completing steps C and step e, all by coloured image check criteria inspection amendment result, as met the requirements, then enters next step, otherwise returns former step.
3. manufacture method as claimed in claim 1, is characterized in that ICC file used is the one in the following files: 1. European standard CoatedFORGRA39, the 2. CoatedSWOP2006 of the U.S., 3. the JapanColor2001Coated of Japan.
4. manufacture method as claimed in claim 3, it is characterized in that: in described steps A, the ICC Document Editing software of employing is the professional color management software of ProfileMaker, opens ICC file with the ProfileEditer editing machine in ProfileMaker.
5. manufacture method as claimed in claim 4, is characterized in that: the ICC file opened is CoatedFOGRA39C.
6. manufacture method as claimed in claim 1, is characterized in that: in described step e, adopts long tune black when described printing object is traditional Chinese Painting, ink and wash; Described printing object be personage, landscape, oil painting, implements and single product time adopt minor black.
7. manufacture method as claimed in claim 1, it is characterized in that: in described method step B, be 360% to revise ICC file by total ink in ICC editing machine, wherein, change the output when input 100% of the C-channel of CMYK, M passage, Y passage and K passage into 95.0 respectively, 90.0,90.0 and 85.0.
8. the application of the ICC file utilizing method described in claim 1 to 7 to make, the Photoshop image processing software of Adobe company is installed in the computer control system for printing, and the ICC file of the international printing standard of the JapanColor2001Coated being built-in with the CoatedFORGRA39 in Europe, the CoatedSWOP2006 of the U.S. and Japan; It is characterized in that: use the Photoshop software of Adobe company to open a RGB figure, in the drop-down menu of edit menu, select " being converted to configuration file ", with the ICC file through editor that pull-down menu selects ICC software for editing ProfileEdit to preserve in object space configuration file, this ICC file through editor is the ICC file utilizing method described in claim 1 to 6 to make, by " determination ", then this RGB figure is converted to the CMYK figure of applicable Chinese printing environment.
CN201510685038.1A 2015-10-20 2015-10-20 ICC file manufacturing method of converting RGB color mode to CMYK color mode Pending CN105262930A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109886902A (en) * 2019-01-21 2019-06-14 西安理工大学 A kind of plate making color separation method of the black-and-white image black based on three colors
CN110837351A (en) * 2019-11-27 2020-02-25 深圳市汉森软件有限公司 ICC processing-based pure color processing method, device, equipment and storage medium
CN111538466A (en) * 2020-04-22 2020-08-14 印推互联网络科技无锡有限公司 Bluetooth printer color processing system
CN112073594A (en) * 2019-05-25 2020-12-11 森大(深圳)技术有限公司 Ash balance adjusting method and device and computer readable storage medium

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109886902A (en) * 2019-01-21 2019-06-14 西安理工大学 A kind of plate making color separation method of the black-and-white image black based on three colors
CN109886902B (en) * 2019-01-21 2022-10-11 西安理工大学 Printing plate making color separation method of black and white image based on three-color black
CN112073594A (en) * 2019-05-25 2020-12-11 森大(深圳)技术有限公司 Ash balance adjusting method and device and computer readable storage medium
CN110837351A (en) * 2019-11-27 2020-02-25 深圳市汉森软件有限公司 ICC processing-based pure color processing method, device, equipment and storage medium
CN110837351B (en) * 2019-11-27 2023-09-08 深圳市汉森软件有限公司 Pure color processing method, device, equipment and storage medium based on ICC (inter-color computer) processing
CN111538466A (en) * 2020-04-22 2020-08-14 印推互联网络科技无锡有限公司 Bluetooth printer color processing system

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Application publication date: 20160120