Transfer of files and design requirements

1. Materials should be sent to an ftp server: ftp.dkh.com.pl
   Access passwords are available upon request.
   In the case of long-term cooperation, the client's individual account is set up on the server.
   The username and password are provided by the printing house employee responsible for your account. Materials can also be delivered on the most popular digital media CD-ROMs, DVDs, USB sticks.
2. Apart from production files, our client should provide a model showing the folding / page order in the binding (can be printed mock-up black-and-white or color with marked page numbers).
3. Files should be prepared in the form of a composite PDF (versions 1.3 to 1.7). It is not allowed to use JPEG 2000 compression. Please avoid JPEG compression - the resulting compression artifacts will be clearly visible on the printed sheets.
4. The resolution of images/bitmaps in the submitted material should not be lower than 300 dpi. The minimum recommended line graphics resolution is 1200 dpi. Sending material at a lower resolution means the client agrees, to a reduction in print quality.
5. All graphic elements must be in CMYK. Please do not send files containing RGB or Lab elements. On request, such elements can be automatically converted to CMYK.
6. In the case when "spot color" is used, you must correctly indicate this color value (name) in the file.
7. Additional elements of the project as a selective coating, hotprint, stamping or punch should be prepared as a spot color overprints-enabled (overprint).
8. Graphic elements / files may not contain the attached profiles ICC.
9. Fonts must be embedded in the files.
10. Each page of the project should include a bleed of at least 3 mm, equal on all sides. A 2 mm bleed is allowed if the product is subject to further processing only 1 binding process (cutting or punching).
11. PDF project must be transmitted centered.
12. Important elements of the graphic or text must be not less than 3 mm distance from the trim edge.
13. Black text smaller than 24 points, and a small black graphic elements should consist only of the component K: 100% without the addition of other colors. They must be printed (Overprint). This is the default setting for most graphics applications unless it is turned off.
14. In order to obtain a deeper depth of the black solid areas, it is necessary to complement the use of color and the other colors of the components to create black - for coated papers: C: 60% M: 53% Y: 47% K: 100% - for uncoated papers C: 45% M: 42% Y: 40% K: 100%
15. This color separation also applies to text font size above 24 points.
16. In order to avoid potential inaccuracies, noticeable color matching is recommended trapping (trapping), which is the minimum imposed colors on each other. The recommended size of the trap is 0.1 mm or 0.3 points.
17. In the case of text in a counterattack against a black background, it is advisable for the negative trapping CMY color of 0.1 mm (in other words, only the outline around the text using only the K component: 100%, without the addition of other colors).
18. Please note that for glued softcover binding, on pages 2 and 3 of the cover and on the first and last pages of the text block, the visible area after binding is reduced by 6 mm from the spine due to side gluing. On the pages of graphics, texts must therefore be not less than 9 mm from the back.
19. In saddle-stitched bindings, due to the creep effect caused by the number and thickness of the folded sections, the width of the central pages is reduced. This may lead to the sides of the graphic elements to be cut from the outside of the booklet. Therefore, the printing press, as long as they can in prepared graphics, apply during the automatic installation of electronic, progressive insertion of internal contributions towards the back. It is therefore recommended for use in a wider margin of such fittings both dorsal and external. If not, the client must in the design gradually increase the contribution margin of the subsequent external internal retaining the format and other margins.
20. Due to the existence of tolerance in the folding and binding, it is not allowed to move text between neighboring small parties, especially in the middle of a word.
21.  The minimum font size print more than one color or one color in counter is 6 points for single-element typefaces and 8 points for two-element typefaces.
22. The minimum permissible thickness of the line in more that one color or counter is 0.5 points.
23. Before sending materials to the printer it is advisable to check the files for possible errors, by using tools / applications preflight (contained in Adobe Acrobat Professional since version 6, or the Pitstop for example).