Aluminum Mirror is also called aluminized glass mirror, glass mirror, mirror glass, mirror plate glass. Based on the different reflective layers on the back, civilian mirrors are generally divided into aluminized glass mirrors and silver-coated glass mirrors. The aluminum mirror is the aluminum coated with the reflective layer, and its reflectivity is lower than that of the silver-coated glass mirror.
In addition, we also sell Silver Mirror glass, silver mirror commonly known as waterproof mirror, mercury mirror, silver-plated mirror on glass surface, glass mirror, mirror glass, etc. Silver mirrors are widely used in furniture, handicrafts, decoration, bathroom mirrors, cosmetic mirrors, optical mirrors, and car rearview mirrors.
To generate PDF files, you need several software tools for ADOBE ACROBAT 3.0 SUITE. These 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.
V. PRESEPARATED files and COMPOSITE files
There are two file types to choose from, the 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.
Six, the advantages 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 resolution can be selected to output the file. The device can be either a resolution laser printer or 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.
Seven, the disadvantages of PDF
The limitation of the PDF file is that only ACROBAT EXCHANGE can edit and modify the PDF file in a limited way, but 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 the workflow that we are already familiar with to process 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.
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