Risograph.e
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Risograph EN
Risograph EN
  • Risograph - Welcome
  • About this resource
    • Presentation
    • Accessibility
    • Rights and mentions
    • Contributions
    • History of the changes
  • Introduction
    • What is a Risograph ?
    • How & Why was it invented ?
    • How does it work ?
    • What can I make ?
    • What are the parts ?
    • How do I take maintain the machine ?
    • What is the workflow ?
  • Getting Started
    • How to install the printer driver ?
  • One Colour Prints
    • What is the workflow for a 1-colour print ?
  • Multi-Colour Prints
    • What is the workflow for a multi-colour print ?
  • TROUBLESHOOTING (RZ900U)
    • Problems making Master Copies
    • Paperjams
    • Adding a Paper Size
    • Problems with Paperfeeding
    • File not printing
    • Roller Marks
    • I want to change the ink of a drum
  • Zine Making Resources
    • How do I make a zine ?
  • RESOURCES
    • How can I learn more about Risography ?
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On this page
  • COLOUR SEPARATION
  • REGISTRATION
  • PRINTING

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  1. Multi-Colour Prints

What is the workflow for a multi-colour print ?

How do I print a multi-colour print ? What are key points to remember ? What is the workflow ?

PreviousWhat is the workflow for a 1-colour print ?NextProblems making Master Copies

Last updated 6 years ago

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KEY NOTES :

  • Think in layers

  • Make sure you change the colour drum when you print another layer

  • Clearly label your files

  • Reminder that registration imperfections happen

Printing multi-colour prints follows the same principles as screenprinting. Each colour represents a layer. So for example, if you are using two colours that means you have two layers to print.

The workflow is similar to a 1-colour print except it introduces the concepts of colour separation and registration into your workflow

  1. » File setup of colour separation

  2. PRINT 2nd LAYER » Registration

*refer to one colour print for details of each step*

COLOUR SEPARATION

Risa doesn't read in colour, it only reads the saturation (intensity of colours).

WHAT DOES THAT MEAN ?

Well, you may have seen an image of a light shining on a prism and on the other side shine the colours of the rainbow. This little science experiment exists to prove that light contains all the colours.

But what this also proves is that without light there is no colour. For example, a red table set in a dark room, in our eyes will look dark red, if it's really really dark, it will look black! But the same table set in a well lit room is bright red.

Going back to Risa, the machine can't actually understand or see colours this way because it doesn't use light. Instead, it reads saturation (intensity) and prints whatever colour ink is in the machine. Because of this, we have to convert our images into greyscale.

EXAMPLE:

You make your design ! Wow c'est beau ca

1.) Separate your design into colours. Make sure to clearly label them.

2. Then you have to convert each layer in greyscale.

*Keep in mind what colours looks like in greyscale. For example, yellow simply converted into grey will print a lighter version of yellow with the Risograph. If you are wanting 100% yellow in your design, you must convert the parts that are 100% to be 100% black.

3. Export each layer, clearly labelling them

CHECKLIST:

REGISTRATION

Registration means lining up each layer so it prints the design you created.

With the Risograph, you register using these machine buttons :

Registration is not always perfect so this is why it's important to print extra copies of your design as registration tester prints.

PRINTING

Your design will dictate the order you print layers. The general rule of thumb is to print from lightest colour » darkest or to print from largest blocks of colour » more detail

final design
black couche
jaune couche
bleu couche
FORMAT DIGITAL FILE
DESIGN
EXPORT
PREPARE PRINTER
SEND TO PRINT
DRY
ASSEMBLE
Prism + Light = Colours
Dark Room
Well-lit Room
Calques Fênetres
Notice how the layers are a bit mis-aligned
Notice how the layers are more aligned