Your artwork should be setup as a greyscale PDF for each ink colour. Booklets need to be sent as a greyscale collated PDF for each colour. With this please also include a full colour proof of your final design. When naming files please make sure to have your name, the ink colour, print size and which side (if applicable) the file is for, e.g CustomerName_inkcolour_Size_Side.pdf. We recommend your files be at least 300dpi however our printer can go up to 600dpi.
The Riso doesn’t print full bleed, so the printable area is a little bit smaller than A3. All artwork must have a 10mm border on all sides.
Set text to registration black for best results, and make sure it isn't rasterized. If the Riso knows it's printing text then it will preserve sharpness and ensure a higher quality print. Riso can print text that is a vector as small as 6pt. Legibility of text deteriorates at lower opacities so try to avoid having light body text. The smallest lines that can be printed are 0.25pt.
Riso inks are slightly transparent so you can overlay them to create different tones. The paper stock will also affect how the inks look. To see how overlaid inks look set the blending mode of layers to Multiply on Adobe Illustrator, Indesign or Photoshop.
Full pages of 100% opacity colour aren’t possible and will cause paper jams, however you can print full pages of colour at 75% density or less. Large areas of solid colour might come out uneven because the paper sticks to the drum and causes inconsistent ink coverage.
Heavy ink on the top of the print can also causes paper jams and sticking to the drum, especially when using lighter paper stocks, you can flip your file around 180° to get around this.
Your images should be saved as greyscale PDFs. The Risograph creates the halftone for the image automatically so there’s no need to add one. If you'd like to use a custom Halftone please see the Halftones section.
We can't print an exact CMYK from the riso, however we can use our Black, Blue, Yellow and Fluorescent Orange inks to simulate a CMYK effect. If you need any advice on setting up your files for this, please get in touch over email.
The riso automatically processes files and applies a halftone screen with customizable LPI (38-200) and angles (0-90). If you want a certain LPI and angle please specify when sending in your files.
If you’ve made a custom halftone screen, or a dither pattern that you want to use, you should make your file with that halftone/pattern and export it as a 600 DPI Bitmap file. The printer won’t apply any halftone itself to bitmap files and will use yours instead.