The portable document format PDF happens to be the universal file format. The use of the Adobe PDF format in publishing and printing is excellent. Thanks to the ability of Adobe PDF to save a combined composite layout, you can create compact and reliable files that printing staff can view, edit, sort, and receive test prints from them. Also, at the moment stipulated by the technological process, the printing house can either directly send the file to the image pickup device or continue its final processing: carry out prepress checks, trap, lower the stripes or perform the color separation. For the Word to PDF you need to be specific.
By saving the document in PDF format, you can create a file that conforms to the PDF or X standard. The PDF or X format portable document exchange format is a type of Adobe PDF that does not allow the use of many variations and combinations of color data, fonts and trapping, which can cause printing difficulties. A PDF or X document should be created when PDF files are used as digital originals for prepress publications, both at the stage of creating the layout and for the purpose of photo output if the software and output devices are capable of working with the PDF or X format.
PDF or X-1a format 2001 and 2003
PDF or X − 1a is a standard file format specifically designed for the exchange of documents ready for printing in the form of electronic data, in which the sender and recipient do not need additional agreement to process the information and obtain the required results in circulation. In fact, it is the digital equivalent of color-separated photo forms.
The PDF or X-1a format ensures that:
- All fonts are embedded
- Images are embedded
- MediaBox and TrimBox or ArtBox parameters defined
- Colors are presented in CMYK format, in the format of mixed colors or in both formats at once
- Output assignment is specified by describing print conditions or specifying an ICC profile.
Note: the purpose of the output determines the type of printing process the file is being prepared for, for example, the type of printing press, the inks used and the paper used.
PDF files conforming to the PDF or X-1a standard can be opened in Acrobat 4.0 and Acrobat Reader 4.0, as well as in their later versions. The PDF or X-1a set provides for the use of the PDF 1.3 format, reducing the resolution of color images and grayscale images to 300 PPI, and monochrome to 1200 PPI, embedding all fonts as subsets of characters, the absence of built-in color profiles, and also reduces transparent areas in accordance with the setting High resolution.
When using PDF or X − 1a compatible files, you no longer have to worry about being asked to provide missing fonts or images. You will never again have to deal with the conversion of images from RGB to CMYK without previewing the results. Decisions as to whether trapping should be used when printing files will be made on the basis of reliable information. And finally, the printing house will know that the file is correctly prepared for the printing press on which it will be printed.
Dimensions page boxes in PDF
MediaBox, CropBox, BleedBox, TrimBox and ArtBox what is it? Anyone who has at least once encountered the PDF format more closely has probably come across these definitions. At the same time, experience has shown that few people know what it is and why it is needed.