Depuis mai 2021, de nouveaux profils de couleurs ICC sont entrés en vigueur.
Veuillez préparer vos épreuves et vos fichiers en utilisant les nouveaux profils (v3) !
Vous pouvez télécharger nos profils ci-dessous.
Printing house Jelgavas tipogrāfija accepts PDF files for print jobs according to the PDF/X-4 (ISO 15930-1) standard, which can be obtained using the graphic software commands Export to PDF, Save as PDF or Publish to PDF with PDF/X-4 settings. To find out more about exporting PDF files click here.
If the submitted work consists of several parts, each part must be prepared as a separate PDF file (inner page, end paper, inserts, cover).
Pages of books and brochures must be included in a single file. Pages in the file must be the same size with the same orientation (portrait or landscape), in the correct order (first to last) with the blank pages, if any. If the file size exceeds 2GB, it would be better to split it into a number of smaller files.
If the document has a background color or images placed along the edge where the page is cut, they must be extended beyond the trim line to add a bleed. Bleed should be at least 3 mm but for hard covers 16 mm.
The size of the document should match the size of the finished product, and the size of bleed should be indicated in the Bleed section. For documents created in MS Office or similar, as well as Adobe Photoshop, where it is not possible to specify the size of bleed, you must increase the size by adding twice the bleed size to the width and height. For example, if the size of the finished product is 210 x 297 mm, the submitted file has to be 216 x 303 mm if the bleed is 3 mm.
Cutting and folding places should be noted with marks. All markings must be outside the printable area. You do not need to add a color bar.
Important design elements such as text, logos, page numbering, chapter titles should preferably be at least 3 mm inwards from the cut and fold lines. Anything closer, due to production offsets, may be partially or fully cut or folded.
Color and black and white images must have a resolution of at least 300 dpi (dots per inch), but their color depth should not exceed 8 bits per channel. For 1-bit images, the resolution should be 1200 dpi.
For the preparation of images use our recommended color profiles that you can find here.
For color elements it is preferable to use the CMYK color system. If the RGB color system is used, colors will be automatically converted to CMYK using the Jelgavas tipogrāfija’s settings.
Black text and black fine objects should be made of one color – 100% Black. If they are made of several colors, printing may result in color misalignments that will adversely affect their appearance and readability of the text.
The following Saturated Black recipe can be used to increase the intensity of black: C60, M40, Y30, K100.
We will automatically activate the Overprint setting for all black objects while processing your files, while for all white objects it will be deactivated.
All fonts used must be included in the PDF file.
Varnishes, foils and dielines are made either in a separate file or in a print file as separate objects with the Overprint setting turned on and 100% color filler, with the name of the varnish, foil or dieline respectively named.
The raised impression should be made in a separate file and only in vector graphics.
The covers must be prepared in according to the drawing provided by the printing house. Ask your project manager about this. Please indicate the places of spine and folds with markings that must lie outside the print area. The spine of the glued-in brochure cover inside must be free of print; this will ensure better adhesion of the cover and the pages.
The minimum thickness of a single color line must be 0.05 mm. The minimum thickness of the multicolor or white line must be 0.2 mm.
Customer-provided color proofs must conform to the ISO 12647-7: 2016 standard with FOGRA51 or FOGRA52 print simulation. They must also contain the UGRA/FOGRA MediaWedge v3 control scale and the date of manufacture. If printing is done on a paper or material with a different surface whiteness to that used on color proof, the print may not match the color proof. Color proof is a target for the printing process and it may not match the final product if product is laminated or UV varnished after printing.
You can obtain a PDF/X-4 file from Adobe InDesign using the Adobe PDF Presets command in the Edit menu. Choose PDF/X-4 settings with the most recent year available in your software.
There is no need to change the default settings in the General section.
Also, you do not need to change the default settings in the Compression section.
You need to turn on Crop Marks and Page Information in the Marks and Bleeds section. Bleed must be at least 3 mm in all directions and Offset must be the same size as Bleed.
In the Output parameter section Color Conversion must be changed to No Color Conversion, but in the parameter Output Intent Profile Name the appropriate color profile for the paper should be selected. For example, if you are printing on coated paper, you should choose PSO Coated v3, and if on uncoated, choose PSO Uncoated v3 (FOGRA52).
No changes are required to the default settings in the Advanced, Security, and Summary sections.
Jelgava printing house produces rasterised PDF files with 300dpi resolution for approval with the client. Rasterising the approval file, we use the same rasterisation process applied to a printing plate, ensuring the same result in both the approval file and the printing plate. Color management process is provided in the approval file, so it can accurately simulate the print result on the screen. For the simulation to be correct, the approval file must be opened in Adobe Acrobat with the Simulate Overprinting and Simulate Black Ink parameters enabled, and your screen must be calibrated.
If you don’t have Adobe Acrobat, you can use the free Acrobat Reader as an alternative, but you can’t activate the Simulate Black Ink parameter in Acrobat Reader. If this parameter is not activated, the black color simulation on the screen will not be correct (the screen will be darker and more saturated), especially when printing on uncoated paper. It is important to set the Use Overprint Preview parameter in Acrobat Reader to Always.
Here is a test file to determine if the Overprint simulation in your PDF software is correct.
We do not recommend using other software because we do not know of an alternative that can render a PDF document correctly!
There are many types of paper that can produce different results when printed, because the color reacts differently to different surfaces of paper. For example, on uncoated paper, the color is more absorbed into the paper fibres, whereas on coated paper, it mostly dries and remains on the coating. There are many other chemical and mechanical processes that are different for various papers.
However, it is important to consider all of these processes when preparing images for printing. This is best done by using the appropriate ICC color profiles.
Jelgava printing house uses ICC profiles developed by ECI (European Color Initiative) and recommends this to its clients. They are based on the international ISO 12647-2 standard, which is also successfully used in Jelgava printing house.
PSO Coated v3 color profile is for all coated paper, both glossy and matte. The total amount of ink is limited to 300%.
PSO Uncoated v3 (FOGRA52) color profile is for uncoated paper. The total amount of ink is limited to 300%.
You need to copy the profiles to C:\WINDOWS\system32\spool\drivers\color for Windows workstations, for MacOS X workstations copy them to /Library/ColorSync/Profiles or /Users/YourName/Library/ColorSync/Profiles.
The image you want to create for one of the paper types must be opened in Photoshop and converted to the appropriate profile using the Convert to Profile dialog box in the Edit -> Convert to Profile menu.
You should select a paper profile as Destination Space Profile (e.g. PSO Coated v3 for coated paper, or PSO Uncoated v3 (FOGRA52) for uncoated paper).
We recommend that you choose Adobe (ACE) as Engine and enable the Use Black Point Compensation and Use Dither parameters.
It would be desirable to select the Intent parameter between Relative Colorimetric or Perceptual, giving preference to the screen result you prefer.
When you save the converted image, include the color profile in the file. You can do this by turning on the Embed Color Profile parameter in the Save As dialog box.
PSO Coated v3 GCR70 (JT) color profile is for black and white images that will be printed in CMYK on coated paper. It has an increased amount of black and the total amount of ink is limited to 300%.
PSO Uncoated v3 GCR70 (JT) color profile is for black and white images that will be printed in CMYK on uncoated paper. It has an increased amount of black and the total amount of ink is limited to 300%.
Black Ink – PSO Coated v3 color profile is for black and white images that will be printed on coated paper.
Black Ink – PSO Uncoated v3 (FOGRA52) color profile is for black and white images that will be printed on uncoated paper.
Files can be uploaded via our website.
You can also use the FTP service. We recommend using one of the popular FTP client software, such as FileZilla or Cyberduck.
FTP server address: ftp.jt.lv
(user: klients, password: jtftp; put jobs in UPLOADS folder)
The files should preferably be compressed using Zip, Rar or 7z.
Once the job has been sent, notify your contact by phone: +371 63 024 501.
If you have any questions or concerns, please contact the Prepress department by email: firstname.lastname@example.org