抄録
A laser plastic coloring (LPC) method has been newly developed as an innovative coloring method for plastic materials using a CO2 laser system. Irradiating laser beam to water diluted dye, the dye solution is heated and a material can be dyed at a laser exposed local area. A laser color marking, a multi-color pallet, and image expression have been attempted by using this LPC method. Four colors of cyan, magenta, yellow, and black (CMYK) logos and characters have been colorfully printed on a plastics bulk material using a laser color marking based on LPC method. A multi-color pallet which consist of 18 steps of hues and 8 tones of brightness expressions have been also created by using LPC dot coloring. From digital image which includes color information, a 30 × 30 pixel colorful image has been successfully displayed with a pointillism taste.
