PDF Healing Chaos Digital Files (below)

Fourth, PDF software tools to generate PDF files, you need several ADOBE ACROBAT 3.0 SUITE software tools, they are PDF WRITER, DISTILLER, EXCHANGE and READER.
PDF WRITER: ACROBAT has two ways to generate PDF files. The first method is to use ACROBAT PDF WRITER to generate files. PDF files can be generated by PDF WRITER for any application created in desktop publishing. The PDF does not apply to high-resolution prepress work, but the resulting PDF file can be easily transferred between INTERNET, INTRANET (Intranet), LAN (Local Area Network), and various platforms. PDF WRITER is a powerful tool for transferring large-format image files with simple illustration files; image files are converted by PDF WIRTER into files with .pdf extensions, and can be viewed and output with ACROBAT READER. Therefore, PDF WRITER is especially suitable for documents displayed on the screen. At the same time, we can also use PDF WRITER as an output tool.
DISTILLER: The best choice for high-resolution images. This is another way to generate a PDF file that can generate POSTscript code as compact and efficient as possible. There are two ways to use DISTILLER. The first method selects the "PRINT TO FILE" option in the print dialog box, converts the file to the POST script code, then opens the POST script in the ACROBAT DISTILLER, selects the desired DISTILLER option, and generates the PDF file. The second method requires more RAM and hard disk space, and as to how much space is required, it is determined by the file size. If the storage space is not a problem, we can ignore the "PRINT TO FILE" step and generate the PDF file directly from the edited file.
When using DISTILLER, pay attention to three things:
First, when generating a PDF file, the color mode of all images is CMYK, not GRB.
Second, the default settings in DISTILLER are specific application settings for low-resolution applications (screen display, screen printing). Correct and effective settings can reduce unnecessary trouble.
Third, when using DISTILLER, only TYPE 1 or TRUE TYPE fonts can be used.
EXCHANGE: It can be used to browse the generated PDF files and the local PDF files for limited editing. The TOUCH-UP tool in EXCHANGE can properly edit the text in the file. If you need to edit the file completely, you need one or more PLUG-IN modules, such as the CRACKERJACK module.
READER: Once a PDF file is generated, it can only be browsed using EXCHANGE and RADRER 3.0. Older versions of READER cannot browse PDF files generated with ACROBAT 3.0. Although READER can browse and output PDF files, it cannot be edited.
Five, PRESEPARATED files and COMPOSITE files Editing looks good manuscript files and PDF files There are two file types to choose from, namely PRESEPARATED and COMPOSITE files.
The PRESEPARATED file is large and cannot be viewed by the terminal operator. The file is divided into several sections according to the requirements of the output film. Each PDF layout file corresponds to one color of the output. If the original has CMYK four-color and one spot color file, the file includes five layout files. Although this file is large, it is suitable for processing files containing spot colors, DCS files, color FIFF files, twelve-color files, three-color files, and the like.
The COMPOSITE file is very small. Before the file is sent to RIP, you can browse it. The document contains the required vague UCR/GCR, TRAPPING, halftone screen (lpi), screen angle, page size, and spot color information for output and color separation work, all of which are sent to RIP, at RIP, rasterizes documents based on information, and finally sends them to imagesetters or digital color printers.
VI. Benefits of PDF We know that the PDF file is described by the actual POST script code, so the resolution of the imaging is independent, meaning that the appropriate resolution can be used to output the file, and the lost device can be a laser printer of the resolution generation. It can be a high-resolution laser imagesetter. Its maximum resolution is 2400 DPI. The default setting in DISTILLER is 72 DPI, which is only applicable to computer screen display. The specific application needs to increase the resolution appropriately.
For scan resolution of halftone images, follow this formula:
Scan resolution = number of screens × 2.
For example, if the number of halftone screens is 100 LPI, then the resolution will be 200 DPI. For monochrome images, the dispensing force is set to 1200 DPI or equal to the maximum resolution of the output device, and for screen printing, it can be set to 300 DPI, 400 DPI, 600 DPI, 800 DPI, or higher. In short, the resolution of the output device determines the setup of the JOB OPITION dialog box in the DISTILLER menu.
VII. Disadvantages of PDF The limitation of PDF files is that only ACROBAT EXCHANGE can edit and modify the PDF files in a limited way, while the editing and modification functions provided by EXCHANGE are limited. For complex PDF files, it would be very difficult to edit PDF files without PLUG-IN modules such as CRACKERJACK. In addition, fewer companies use PDF as a prepress format.
The use of PDF technology requires good prepress and color separation skills. If you are using POSTscriptIII RIP, then PDF files can only be sent directly to imagesetters or digital presses.
VIII. The Future of PDF PDF is an exciting technology. With the application of PDF in the printing field, more applicable PLUG-IN modules will appear in ACROBAT in the future, which means that we can use what we are already familiar with. Workflow processing files. In the future, edited files can automatically generate PDF files. Like any developing technology, PDF will gain great vitality in the application. In a field of interest, PDF is a mature technology; in the Internet, PDF is increasingly becoming the darling of people; the next one is the prepress field.