Cosmetic Brush Set,Glitter Mini Brush,Professional Cosmetic Brush,Aluminum Cosmetic Brush SAMINA FORAM (SHENZHEN) CO., LIMITED. , https://www.saminabrush.com
Second, the poor quality of color printing products
Third, why do you need a color management system?
I. Problems commonly found in current printed products
Every time I saw the products from advertising agencies, graphic design companies, and printing units, plate making, and printing products, I was greatly inspired; most of these products have many problems: (by color samples)
1. Loss of white field (refers to the highlight area of ​​the image)
2. Black field imbalance (mean darkness is not saturated)
3. Neutral grey color cast
4. The basic color is not bright
5. Bad contrast
6. Poor resolution
7. The skin color (mainly the character's face) is flat, unclear, no level, and no texture.
8. The overall picture; each page, the entire, unbalanced
9. It is troublesome to print.
Watching these products, propaganda, and samples gives people a very uncomfortable feeling; that is, without the colored attraction of the screen, you can learn about the contents of the propaganda and play a role in attracting the educators, but not retain the value of management. Some insiders and experts call these products "junk."
Second, the quality of color printing products is not good
1. Character structure analysis
I learned from talent recruitment conferences and human resources information. Advertising companies and graphic design companies recruited colleges and universities, and they have two years of practical experience and experience. They can master 1-2 kinds of software; pagemaker6.0 6.5 , Photoshop, can be hired.
Among these talents are from the design department of decoration, the arts and crafts department, the clothing design department, the imagery department, the computer department, the printing machinery department, and the printing process management department.
Although they can master several kinds of software and can skillfully perform operations, they do not have much knowledge of prepress and printing content. They have not been hard-working through practical work and it is difficult to make good products.
2. It is not well understood how to perform color management in the printing process from theory to actual production.
In terms of theory, we are not revisiting the concept: The concept of ICC, RGB, CMYK, CIELAB, and HSB, as well as the improper application and technology in prepress.
ICC: International Color Committee
RGB: Shade Method 25,58,14, TV, Computer, Display Directory
C, M, Y, K; color subtractive method; pure green, yellow, yellow beam material can absorb all light and produce black, called subtractive principle, but actually because of the purity of the dye, the three primary colors The dark gray formed must use black dye to produce true black.
CIE·CAB; is a color space that is internationally standardized and matched with the human eye's color vision. It is a technological breakthrough and is used for copying.
CIE is a committee: (International Commission on Illumination)
LAB is the color reference system: L means the brightness; A and B are the coordinates of the color data.
CIEAL is a global standard system that makes it easier for designers, copy centers, and printing companies to connect in color.
When CIECAB is applied to a replication system, the brightness, chroma, and hue (LCH) of the three basic elements of color can also be adjusted and changed.
The brightness axis (L) in the figure is moved in the vertical direction, and the color can show that the color segments are deepened from the top to the bottom.
(C) Chroma axis; extends outward from the center. Its cross-section through the color space can show chromaticity (color's degree of constitution) if it increases outward from the middle of each color segment. All colors close to the center axis are gray and will saturate in the outer zone.
(H) Hue; moving around the center point of the CIECAB color space results in a change in hue (H), which is compatible with the complementary color model. The positions of red and green are opposite and yellow is opposite to blue.
Observation diagram:
With LCH, change the width of the color (with curves).
With LCH, change the hue of the color (using a color-lifting system).
Use LCH to change the color shade (regularity system).
3. Use equipment
Most of the advertising companies, graphic design companies, business strategy, it is impossible to invest too much money to purchase high-end electric extensions. If you scan hundreds to thousands of manuscripts per shift, you will not be able to recover costs after a few years. In addition, from the perspective of advertising and graphic design companies, there will not be such a large amount of resources.
Whenever an advertising graphic design company receives a high-quality product from a customer, it obtains a high-end extension factory to scan, scan only, and not produce. Only use the magnification and dpi value, save it to the hard disk. At present, each dollar in the Beijing area (7, 8 corners in Shenzhen and other places). And pick the best electric extensions, even Noble - Haier 3900, 3400, DS-7060P and so on. I once saw in the foreign language printing factory that Mr. Jia Liansheng used the Linuo Haier 3900 electric extension (the most advanced electric extension at present) introduced in 1998 to give customers only scanned originals, which could reach more than 1,000 pieces at a time.
Advertising and graphic design companies only purchase a few thousand to several tens of thousands of flatbed scanners for general product scanning and production. The platform scanners are easy to operate. They do not require electric extensions and high-end platform scanners. They must have engineers. Only after professional training can you master it. In this way, products made by the company virtually represent a lot of problems, and they go to the nine deficiencies I mentioned above. From the theory to the actual work, there is no color quality control quality means, let alone realize the color management work into the work.
for example:
In September 2000, a sample of the Chinese Acrobatic Troupe designed and produced by the Sunshine Studios Qin Weiguang and Li Rihong was analyzed;
In the Sunshine Studios, please come to visit the China National Acrobatic Troupe, and leaders of the Acrobatic Troupe saw the center's advanced equipment and decided to print them here. We also exchanged business cards with each other. Make sure to print this sample.
All the color photos of the samples were scanned by the SG-7060P mathematical extension at our printing center. The scanning quality was relatively good and the overall tone was balanced.
In the design and group edition, I found that due to the pre-press data, the solar studio Li Rihong’s neutral gray balance curve, the percentage of dots superimposed on C, M, Y, and K4 colors, etc., were only partially understood and only evaluated on computer screens. The color prevails. As a result, the entire picture book is distorted, the tone is not balanced, and the color is inverted.
For normal reasons, the China Printing Service only manages electricity distribution and printing. The problems that arise in the middle are not our responsibility. However, we once assured the leaders of the Acrobatics Troupe that if the quality of the products after the printing is not good, the consequences will have a bad influence and it will also damage the reputation of our boutique printing center. Starting from this mood, he used the rest day to help Sunshine Studios Qin Weiguang and Li Rihong make changes on the Apple computer and teach them the method of adjustment.
Li Rihong is a 99-year undergraduate college student of the Central Academy of Fine Arts. He took great efforts in the sample of the Acrobatic Troupe. Most of the color photos were knocked out and removed, and the 1-4 dragons and pressure drums were moved a lot. Brains, customers are also recognized.
Through this cooperation, we have all been inspired. Li Rihong experienced that he did not expect that there was so much knowledge and content before and after India. It was not easy to do fine work. I also believe that these college students, once they have mastered the prepress technology, will be able to learn hard.
Example 2:
Wei Lanjia strategy company is a relatively large advertising company, mainly for Henderson Albert CHAN Business Communications and other advertising planning. The company's advertising business is more comprehensive; graphic design, film and television production, three-dimensional production.
Sun Jihui, General Manager, and Huang Jie, Artistic Director invited me to give lectures to the company. The main point of lectures is to raise staff awareness and production level of printed product quality.
The company has produced more than a dozen staff members, all of whom are undergraduates or junior college students. They all urgently need experienced teachers to help them eliminate some of the difficulties in their work and grasp the color copying application technology as soon as possible.
Through lectures and live demonstrations, the staff's response was still good. One girl said: Teacher Xu, why didn't I dare to use the Apple Curve? It is very simple. The application of software and the unclear maps to be achieved must be constantly explored in practical work to master its essentials.
Third, why do you need a color management system?
With the launch of prepress and printing technology, the desktop publishing era is coming; high-resolution scanners, digital cameras, digital color proofing machines, digital color printing machines, CTP direct scanning machines, Heidelberg, Man Roland four-color to many Application of various digital windows for color printing presses.
Through the network transmission, CIP3 and CIP4 have achieved consistent high quality with a unified format and interface according to international standards.
This also requires the strengthening of the quality control of image colors in desktop publishing, and it is also the most critical issue we discuss.
It is not easy to basically match the scanned original with the final printing, because there are many variables in the entire image reproduction process;
1. Different scanners scan the same original and will get different image data.
2. Different brands of monitors, the same image will have different performance.
3. The color expression capabilities of display screens and printing inks are different, which can not be achieved.
4. Different application software replaces R, G, B data into C, M, Y, and K for lack of consistency.
5. Different papers and inks are used for printing, and the printed matter obtained is also different.
Must have a very complete and truly practical color management system to properly solve these problems.
The necessity of implementing color management
I. Problems commonly found in current printed products