Analyze digital printing common file formats

In digital printing, TIFF, EPS, and JPEG are the three most commonly used data formats. The EPS and TIFF formats are the two most common formats used by desktop publishers, and the JPEG format is widely used in Wanwei or multimedia. Other formats used are: PICT, GIF, BMP, WMF, etc., but they are usually converted to the three commonly used file formats before use. The following focuses on the TIFF and EPS formats.

TIFF file format

TIFF is an acronym for Tagged Image File Format. This file format was developed by Aldus and Microsoft for scanner and desktop computer publishing software and is used to store black and white images, grayscale images, and color images. The defined storage format has now become an important file format for publishing multimedia CD-ROMs. The TIFF bitmap can have any size and resolution. In theory it can have infinite depth. The TIFF format can encode grayscale, J-health, CMYK mode, index color mode, or RGB mode. It can be saved in compressed and uncompressed formats. Almost any application that involves bitmaps can handle TIFF file formats—whether it's placing, printing, trimming, or editing bitmaps. The current version of the TIFF format supports high-resolution color, which divides different parts of an image into blocks, or chunks of data. For each block, there is a flag that provides information about what the block looks like. The advantage of the block is that software packages that support the TIFF format only need to save the portion of the image that is currently displayed on the screen. Parts of the image that are not displayed on the screen are also saved on the hard disk, and are not loaded into memory until they are needed. This feature is important when editing a very large high resolution image.

In TIFF files, no tools contain screen processing instructions. Screen processing is controlled by a program that prints TIFF format files. If you want to save the screen processing instructions while saving the bitmap, you must use the EPS file format. However, the TIFF format handles the clip path. Both QuarkXPress and PaceMaker can read the clip path and correctly subtract the background.

EPS file format

Encapsulated Postscript format. The Postscript language is a page description language designed by Adobe for printing files to any printer that supports the Postscript language. 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 the word processor (or any other application) to print a page, the computer writes a program describing the page in Postscript and sends the program to the printer. The printer actually contains a full-featured computer and a Postscript language interpreter to execute this program, drawing graphics on virtual paper in memory and printing it on paper.

An EPS file is a Postscript file that includes file header information. Using file header information, other applications can embed this file into a document. The EPS file has some restrictions, and these restrictions 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. The EPS file format can be used for encoding pixel images, text, and vector graphics. If the EPS is only used for images like the Qin basis (for example, the Adobe Photoshop program is selected as the output), the hanging net information and the tone copy transfer curve can remain in the file, whereas TIFF does not allow such information to be included in the image file.

The EPS format is a format for printing. The Postscript language code embedded in the EPS file provides an important print definition, but this makes the file size larger. In addition, the value and memory overhead required to set up a Postscript engine in software is also high. As a result, most web browsers do not support EPS files, and most image viewing shareware and free software also do not support EPS files. For this reason, the EPS format cannot be used on the Web site's image display.