Corrugate Boxes For WineCTP cause analysis of color differences

Corrugate Boxes For WineCTP cause analysis of color differences

 

Why use CTP, the color is still different? We first analyze the misunderstanding of customers, first of all, customers have two major misunderstandings: the concept of plate making and printing plate output confusion, color management and color correction confusion.

If the above four concepts can not be highly understood by you, you will step into an abyss that can not be extricate from, which will bring you infinite distress...

 

What is patternmaking?

 

Plate-making is a general term for the reproduction of an original manuscript into a printing plate.

The basic requirement of plate making is to be faithful to the original manuscript. If the design and production personnel do the manuscript, when the color copy has deviation, it is required to correct the color. This is why the clothing album or art album should repeat proofing 2-4 times, or more...

 

What is plate output?

 

Plate output is the plate output center will be submitted by the customer electronic document page, in accordance with the printing and binding requirements, after the large version of the output plate, the basic requirement is to be faithful to the document page, according to the plate output compatible ability and printing technology range, as much as possible to retain the content of the page to see. This is where you see the difference between professional graphic software and office software, printed PDFS and certified PDFS.

 

What is Color management?

 

The color matching problem is caused by the different color Spaces used by different devices and software. One solution is to use a system that can accurately interpret and convert colors between devices. A color management system (CMS) compares the color space in which the color is created with the color space in which it will be output and makes the necessary adjustments to make the colors appear as consistent as possible across different devices.

 

A color management system converts colors with the help of a color profile. A profile is a mathematical description of the color space of a device.

 

What is color correction?

 

Because the plate output is faithful to the file, that is, the original color value output is the color of the color value, so the color of the printed matter or digital proofing can not meet the needs of customers, which requires the correction of color in the front-end production.

 

Don't confuse color management with color correction. The color management system will not correct images that are stored with hue and color balance problems. It provides an environment capable of reliably evaluating images based on the final output.

 

Understand the above concept, then you can't do useless work, as a single life, before the film plate printing, now use CTP plate printing, CTP live out of the color in the dark and bright part and film printing has a big difference, because CTP dot can be out to 1-99%, and film 3% below the dot are more difficult to sun out.

 

As for the color, you can't always adjust the plate curve and digital proofing curve to adapt to the individual print color, you should master the quality control of the printing machine as soon as possible.

 

Why are RGB colors so different? Let's take a look at the following two images in different color Spaces.

 

CTP version printed color is not allowed, there are the following reasons, because the printer master just started to use CTP version, not fully familiar with the CTP version of the use details, plus the existence of piece-counting factors, so a machine, if the color is not allowed, no longer ink.

 

There are also some prints and the original film sample color, prints and fast printing sample color, the customer in the guidance of color correction. If it is the customer in the printing workshop site color, it is really impossible, each customer's standard is not the same, and in the printing machine color, can only increase ink or reduce ink to achieve, for pre-press plate making, it is difficult to know how many dot can print what kind of color.