What is the EPS format?

Source: Internet
Author: User
EPS is called the encapsulated postscript format. It mainly contains the following features.
(1) the EPS file format is also called the PS format with previewed images. It is a text file in a postscript language and an (optional) the low resolution is composed of representative images described in PICT or TIFF format.

(2) The "encapsulation" unit of the EPS file format is a page, that is, a page. The EPS file contains only one page description. In this way, 50 EPS files will be generated for publications with 50 pages. Note. The page size can be determined by the overall rectangular boundary of the objects on the saved page. Therefore, it can be used to save a standard page size in the Group Edition Software, it can also be used to save the rectangular area of an independent object.

(3) The text part can also be written by ASCII characters (the generated file is large, but can be directly modified and checked in the General Editor ), it can also be written out by binary numbers (the generated file is small and fast, but cannot be modified or checked ).

(4) Although the EPS file adopts the vector description method, it can also accommodate dot matrix images, but it does not convert dot matrix images into vector descriptions, instead, all the pixel data is stored as a description of the pixel file. For pixel image cropping and output control parameters, such as contour curve parameters, network adding parameters and dot shapes, and color device feature files (profiles) of images and color blocks, the files are saved separately in the PostScript Language. For example:

Include Halftone Screen (including network parameters)

Include transfer function (including transfer function)

Postscript Color Management (PS Color Management)

(5) There are multiple forms of EPS files, such as cmyz EPs by color space (including the postscript description section of the four-color splitting image and an optional low-resolution representative image), rgb eps, L * a * B EPS. In addition, various EPS files generated by different software are also different, such as PhotoShop EPS, generic EPS, and AI (iiiustrator software version in the EPS format. When cross-use, pay attention to its compatibility.

(6) An EPS file can carry all the text-related font information at the same time. If the output system does not have a font for Chinese characters, you must convert the text into a graph before it can be output normally.

Print an EPS file

An EPS file can carry all the text-related font information at the same time. If the output system does not have a font for Chinese characters, you must convert the text into a graph before it can be output normally.
It is particularly emphasized that only low-resolution representative images can be output to non-postscript devices. High-resolution output can be obtained only on the postscript output device. In many cases, the sample image we print is very rough because we use a non-postscript printer to print postscript files. If you replace it with a postscript printer, almost perfect images will be printed.

What are the purposes of an EPS file?

At present, the EPS file is a general exchange format commonly used by the desktop pre-press system. For the current printing industry, the use of this format to generate files will not cause any problems anywhere, most professional software will handle it. As far as I know, the EPS file can be applied to the layout and design of the PageMaker software. An EPS file is a good file format. It can be used to facilitate file exchange.

Differences between EPS files and PS files

Postscript format (PS format ). It is a standard format of the PostScript Language and consists of a Multi-page description file consisting of ASCII characters (or its binary form) corresponding to the PostScript Language, it features vector graphics, but can also contain dot matrix images. The PS format is the file format that can be directly output to the printing device. The graphic description is restored to the grating image lattice at the specified resolution of the printing device (photo layout device). If there is a pixel image, the output resolution is set by the application or output software. This format is the "original" format of the postscript Page Description Language. Its biggest feature is that a PS file can contain many pages in the entire chapter.

Compared with the PS format, the "encapsulation" unit of the EPS file format is a page, that is, a page. The EPS file contains only one page description. In this way, 50 EPS files will be generated for publications with 50 pages. Note. The page size can be determined by the overall rectangular boundary of the objects on the saved page. Therefore, it can be used to save a standard page size in the Group Edition Software, it can also be used to save the rectangular area of an independent object.

Similar to the PS format, although the EPS file uses the vector description method, it can also accommodate dot matrix images, but it does not convert the dot matrix image to the vector description, instead, all the pixel data is stored as a description of the pixel file. For pixel image cropping and output control parameters, such as contour curve parameters, network adding parameters and dot shapes, and color device feature files (profiles) of images and color blocks, the files are saved separately in the PostScript Language.

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