Patent ID: 8246754
Filing Date: 2012-08-21
Classification: B08B,B41M,C08K,C09D,Y02P

Abstract:
1. A process for removing an ink composition from a printed media substrate, comprising the steps of: providing a media substrate including an ink printed image wherein the ink composition or the media substrate contains photolabile entities, wherein the photolabile entities are compounds including groups selected from ortho-nitrobenzyl groups, phenacyl groups, benzoic ester groups, ortho-nitrophenyl glycol groups, dithiane groups, sulphonamide groups, benzyl alcohol groups, polycyclic aromatic hydrocarbon groups, and combinations thereof; and applying UV light on said printed substrate wherein the emitted UV light has a wavelength value which is below a threshold wavelength of said photolabile entities, thereby breaking or disintegrating the photolabile entities and rupturing chemical bonds that link the ink composition to the media substrate.