RP

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. 

 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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A nozzle-to-nozzle ink transfer adapter is an easy and painless method of transfering inks from tube to tube. Transfering ink in this manner is a much cleaner process then filling tubes through the back and helps prevent air bubbles from forming during the transfer process. 

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What to do if you have drum stuck in your RP 3700 that is not in the right position.

Original article: http://www.drucksalon.ch/828/how-to-remove-a-stuck-drum-from-a-riso-rp-3...

Thoroughly cleaning a drum is a complicated but not impossible task. Use the following images to guide you through the complete teardown and cleanup of your RP color drum.

All photos by Rob Brown.

Annotation coming soon. 

To understand the role that paper plays in Risograph printing begins with a brief knowledge of ink behaviour. Soy-Based Risograph Ink dries through a combination process of absorption and evaporation, so it is ideal to find paper stocks with qualities that suit this process. Much like soy-based newspaper printing ink, Riso Inks may smudge after the prints have dried (technically, the ink never really sets). This may be of concern for some projects, especially those with heavy ink coverage, or intended for handling.

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