Production of inkjet proofing machine ICC PROFILE file
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The characterization tool usually only provides a small or no parameter setting for the RGB output device profile such as an inkjet printer. The rule drawn from experience is to first create a property file with the characterization tool according to the default settings. If you find that there is a problem with this, then use another setting.
Some characterization tools provide a two-step approach to creating a profile: First, print and measure the linearization color scale, and then the characterization software uses this linearized data to produce a custom characterization color scale that fits the printer's size. Some software, such as Integrated Color Solutions' BasICCor print3c software, recommends linearizing inkjet printers first; some software, such as Monacoproof's Monacoproof and monacoprfler software, do not recommend this.
Here we introduce the use of the most commonly used software PROFILEMAKER.
There are no inkjet printers that print in RGB ink. All inkjet printers are based on CMYK four-color printers. Some printers also add some light colors to complement the lack of color and improve the details of the highlights, such as six. Color printers, etc. The so-called RGB printer refers to the use of RGB signals or data to transmit, so called RGB printer, almost all inkjet printers and some laser printers can be RGB printers. These devices are reproducible and stable, although the printing software for RGB printers usually has many setup functions, but does not actually provide any calibration functionality. But when RGB printers do ICC files, there are still several aspects to be aware of:
1 The choice of paper type in the printer driver is important because the inkjet printer does not have a total ink volume selection option. The choice of print paper is actually a few total ink limit presets in the printer software. The choice of these paper types basically guarantees the total ink volume requirement of our commonly used paper.
2 Inkjet print proofs usually require a certain amount of drying time to achieve color stability, usually requiring a minimum of 30 minutes.
A printer is an output device that directly records images on photographic paper and photographic film. These devices usually have a strong internal correction function, and the materials used are also very stable. Generally, there is no problem such as settling time. However, different types of photographic papers have different characteristics, and different ICC files should be prepared for different photographic papers.
First of all, ready to print or print color card files, cheaper devices can use tc2.83RGB color card files, better use tc9.18RGB color card files, print in photoshop, do not use any color space, do not Use any color management (including photoshop and printer), print or print out, wait about 30 minutes, then start preparing for measurements.
Open ProfileMaker, select the color card name you printed in the reference data, select your instrument (spectrophotometer) in the measurement data, and start the MeasureTool software to measure. As shown in Figure 1.
If you have measured the data (measured in MeasureTool), you can choose to open your previously saved measurement data.
Here, using eye-one pro, the software will prompt to place the instrument on the standard white point of the self-contained base, and then start the measurement of MeasureTool.
There are three options in the modal, which are color blocks (one color block and one color block measurement), color bars without gaps, and color bars with spacing (Eye-one pro dedicated measurement mode). When selecting the color block measurement, the software can control the instrument to automatically measure the color card. In this case, you can select the delay option, which has three delay time options: short, medium and long. The last one is manual (manual), that is, manually press the buttons on the instrument one by one, as shown in Figure 3:
When using a color card with gap measurement, Eye-one pro can scan one color card at a time for measurement. In the measurement, measurement errors often occur, and the measurement can be re-measured. If you can't read it, you can choose the color block measurement. measuring.
After all measurements are completed, press Close to turn off the measurement, as shown in Figure 4:
At this time, you will be prompted to save the measurement data. After saving the measurement data, you will jump directly to the ProfileMaker software, as shown in Figure 5.
Here, there are several options that are important and need attention.
The first is the size of the profile. If you just print it yourself, you can choose a large one. The resulting icc file will be larger and more accurate. If you need to embed an icc file to send many images to others, it is recommended to use normal, so the generated icc file will be smaller, the image file size after the built-in icc will not increase too much.
The most important thing is the second, the treatment of neutral ash. If you use a print paper that is bluish, our eyes can quickly adapt to this paper white. If the measurement chooses a standard neutral gray, the eyes may look yellow (in a perceptible conversion intent). Therefore, it is best to choose "neutral ash relative to paper" here, unless you really need a yellowish neutral gray.
The third "gamut mapping" is a control option specifically prepared for perceptible conversion intent, and we know that perceptible conversion intent is to compress overall to maintain the gradation relationship between colors within the image. Here are three options for the overall compression, as follows: Colorful is to try to maintain the color relationship of the color. Chroma Plus is the brightness relationship that maintains color. Classic is to maintain the brightness relationship and add white points to not convert. A second Chroma Plus is recommended to keep the brightness of many images.
Batch processing allows you to handle several different options at the same time. After one-time calculation, generate their own ICC files to reduce the iteration time.
Once all selections have been made, the calculation can be started. It is best to take a name that includes the printer name model and paper type, ink type, and production time.