Kobundo have displayed Trick Print, a printing technique which combines regular CMYK ink with luminous RGB ink and can be printed in one pass without requiring offset printing.

In a trick print, the image printed with CMYK ink is visible under regular light, and if the image is viewed under a black light the image printed in the RGB ink is displayed. This allows for a wide variety of possible uses.

“Black lights have long been used in nightclubs and other places to illuminate things to make them shine. But they just shone and weren’t particularly beautiful. We use it to make it possible to show colors that shine on a TV screen as accurate natural colors with RGB.”

Q.”Color can appear on blank areas of a piece of paper, and here we are also showing that by changing the lighting we can turn a black and white image into a full color image, so these are the two main points we are showing.”

A regular wide format eight-color inkjet printer is used, with the RGB ink placed in the spare ink cartridge slots. Custom software is used to convert images from CMYK to RGB, as well as to control the printer.

“The effect changes according to the material we choose. So in the beginning we have to go by trial and error. Here the yellow Lamborghini turns red. But the colors might be stronger or weaker, and conversely it is difficult to turn a red Lamborghini yellow. This is something people won’t understand until they try it. People who have some experience can understand it, but in the beginning they don’t.”

“We want people to see the accuracy of these colors and once the see it they understand, because “A picture is worth a thousand words”. Rather than people just saying “It glows”, we want people to be more surprised and say “It’s beautiful!”.”

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