Talk about the three most commonly used file formats of Matte Black Sticker Paper digital printing

Talk about the three most commonly used file formats of Matte Black Sticker Paper digital printing

 

Many file formats exist for image storage, but only some are widely used as actual standards. For digital printing applications, there are three commonly used data formats, TIFF, EPS, JPEG, EPS and TIFF are the two basic formats that desktop publishers are most interested in; The JPEG format, on the other hand, affects people who spend most of their time working on purse Seine or multimedia. Using other formats such as PICT, GIF, BMP, WMF, etc., is usually converted to the above three commonly used file formats before use.

 

TIFF file format

TIFF stands for Tagged Image File Format, a file format developed by Aldus and Microsoft for scanner and desktop computer publishing software to store black and white, grayscale, and color images. Now it has become an important file format in publishing multimedia CD-ROM. Although TIFF has a longer history than other file formats, it is still the most widely used industry standard bitmap file format, mainly due to the fact that TIFF's specifications have been improved many times.

 

TIFF bitmaps can be of any size and resolution. In theory, it can be infinitely deep, i.e. 1-8 bits, 24 bits, 32 bits (CMYK mode) or 48 bits (RGB mode) per sample point.

 

The TIFF format can encode grayscale, J-key, CMYK, indexed color, or RGB modes. It can be saved in compressed and uncompressed formats. Almost any application that works with bitmaps can handle the TIFF file format - whether it's embedding, printing, trimming, or editing the bitmap.

 

The TIFF specification allows the use of two color modes, CMYK and RGB, to split the image into four overprint colors, and save the image before the separation as TIFF format. Placing TIFF files into the page layout design or similar program elbow does not require further color separation. When printing cyan plates, the program simply pulls the cyan channel; When printing red plates, simply hold the magenta channel; And so on. The TIFF format can also save indexed color bitmaps, but few people do this. For indexed color images, it is more often the choice to use the GIF format.

 

The TIFF format can contain compressed and uncompressed pixel data. The compression method (LZW) is non-lossless (the data of the image is not reduced, that is, the information is not lost during processing) and can produce a compression ratio of about 2:1, which can reduce the original file to about half.

 

The current version of the TIFF format supports high-resolution color, which divides different parts of an image into chunks, or chunks of data. For each block part, a logo is saved which provides information about what the block looks like. The advantage of blocky is that packages that support TIFF only need to save the portion of the image currently displayed on the screen. The parts of the image that are not displayed on the screen are kept on the hard drive until they are loaded into memory when needed. This is important when editing a very large, high-resolution image.

 

In TIFF files, none of the tools contain screen processing instructions. Screen processing is controlled by a program that prints TIFF files. If you want to save the screen processing instructions along with the bitmap, you must use the EPS file format. But the TIFF format is able to handle the clip path, and either Quark XPress or PaceMaker can read the clip path and subtract the background correctly.

 

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EPS file format

Encapsulated PostScript (Encapsulated PostScript) format.

PostScript is a page description language designed by Adobe to print files to any printer that supports PostScript. It is like Basjc, C, or any other programming language, except that it is optimized for printing text and images on paper. When you work on a PostScript printer and tell a word processor (or any other application) to print a page, the computer writes a program describing the page in PostScript and sends that program to the printer. The printer actually has a fully functional computer and a PostScript language interpreter in it to execute the program, draw the graphics on virtual paper in memory, and then print them to the paper.

 

An EPS file is a PostScript file that contains header information that enables other applications to embed the file within the document. EPS files also have some limitations that do not apply to standard PostScript files. These restrictions are mainly rules to ensure that EPS files can be inserted into different files without damaging the file. For example, in Microsoft Word, you can embed an ESP file in a Word, or in a Word document. The most popular use of EPS files is to embed them in desktop publishing files, especially those created by PageMaker or Quark XPress. Desktop color separation (DCS) was developed by Quark for Process color processing. DCS images are EPS cells or images that consist of 5 parts: a low-resolution screen preview, plus layers of cyan, magenta, yellow, and black. DCS2.0 files can include more than 4 sets of colors, and can also include a certain number of spot colors or high-fidelity color separations.

 

The EPS file format can be used to encode pixel images, text, and vector graphics. If EPS is only used for images like the first base (such as selecting an Adobe Photoshop program as the output), the hanging information and the hue copy transfer curve can be retained in the file, whereas TIFF does not allow such information to be included in the image file.

 

Because an EPS file is actually a collection of PostScript language code, it can be printed in a variety of ways on a PostScript printer. Software that creates or edits EPS files can define capacity, resolution, fonts, and other formatting and printing information. This information is embedded in the EPS file, which is then read in and processed by the printer. There are hundreds of printers that support PostScript, including all the image typesetting systems used in the desktop publishing industry. Therefore, the EPS format is the file format used by the professional publishing and printing industry.

 

The EPS format is a format used for printing. The PostScript language code embedded in the EPS file provides important print definitions, but this increases the size of the file. In addition, the value and memory overhead required to build a PostScript engine into the software is also high. As a result, most Web browsers do not support EPS files, and most image viewing shareware and free software do not support EPS files. For this reason, the EPS format cannot be used for image display on Web sites.

 

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JPEG file format

JPEG file format - Best known as the Joint Photographic Experts Group standard for extremely dark images. Now, it has risen to become the main format for compressed files published in print and on the World Wide Web.

 

An image saved in the JPEG file format is actually a mixture of two different formats: the JPEG format specification itself, which defines the compression method for the image, and is wrapped in an image data format with a given resolution and color pattern.

 

Photoshop, and virtually every other application that can read and write to the JPEG File Format, saves image data in the JFIF file format (JPEG File Interchange Format, JPEG File Interchonge Format) or some other format that closely resembles the JFIF format. The JFIF file format is just a simple way to compress an image cell or surround JPEG, and they don't do much more.

 

The original JFIF file format specification allowed 8-bit grayscale images and 24-bit RGB images; However, Adobe has "modified" this format so that it can also handle data in 32-bit CMYK mode. However, most layout applications can't actually separate CMYK mode JPEG images, so this change by Adobe doesn't make much sense. The JPEG file format allows the use of variable compression methods to save 8 -, 24 -, 32-bit depth of the image. For example, when saving a Photoshop image in JPEG format, Photoshop gives a variety of saving options: low compression, medium compression, high compression and the best resolution. Experiments have shown that when printed or viewed on a display, JPEG can generally compress an image to one-tenth of its original size without noticeable differences. The image is broken down into small squares of 8×8 pixel image units. This JPEG distortion is sometimes found in news images that are greatly compressed before electronic transmission and subsequently printed at high magnification.

 

JPEG uses a lossy compression format, which makes it an ideal format for displaying images quickly and saving good resolutions. It is precisely because the JPEG format can greatly compress scanned or natural images, which is conducive to storage or transmission by modem, so it has been widely used on the Internet.

 

There is a special variant of the JPEG format called Progressive JPEG. When creating a Progressive JPEG file elbow, the data is arranged in such a way that when loading the image, only a blurred image is displayed at first, and as the data is loaded, the image gradually becomes clearer.

 

The main drawback of the JPEG format is also its greatest advantage. That is, the lossy compression algorithm limits JPEG to the display format only, and some data is lost every time you save an image in JPEG format. Therefore, it is usually only necessary to save an image once in JPEG format during the final stage of creation. If you want to print images, especially high quality images, TIFF is a more suitable choice.