RISO

Risograph inks are soy-based and do not conform exactly to any color standards. The listings below are approximates for reference only. Additionally, Riso inks are also slightly transparent and allow for variations in overprint and based on the color of paper they are printed on. 

This tutorial applies to MZ/EZ/RZ drums. The purpose of this tutorial is to clean and prep a drum to change the color. This tutorial simply shows taking apart and cleaning the drum for new ink. Cleaning the drum instead of trying to flush out the old color with new ink will save you a lot of ink and paper.

Please note: I am not a certified Riso tech. This method has worked for me through trial and error and reading through the technical manuals. Find a clean work space and lay down some kraft/butcher paper because it will be messy!

 Here's a list of color codes for a Riso RP inks. These have been tested on a Riso RP3100UI model, I'm uncertain about compatibility with other RP or similar models. I don't think it's necessary to change the color code on the drum after swapping ink colors but if you want the printer to show the proper drum color on the display you can use this codes to update the drum settings after swapping inks. To change the drum code: 1 - Start up in Test Mode (Hold Left & Right keys while turning on the printer). 2 - Type: 587, press Start. 3 - Select the new color code, press Start.

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