Patent ID: 6254230
Filing Date: 2001-07-03
Classification: B41J

Abstract:
An ink jet printing apparatus for producing an image, comprising:a) an ink receiver coated with a layer of gelatin wherein the gelatin is cross-linkable with a hardening fluid;b) at least one ink reservoir having ink therein for printing the image;c) a first valveless print head disposed adjacent the ink receiver and the at least one ink reservoir for depositing spots of ink on the ink receiver;d) a fluid reservoir having a hardening fluid therein which is cross-linkable with the gelatin; ande) a second valveless print head disposed adjacent to the ink receiver and connected to the fluid reservoir for receiving the hardening fluid therefrom for depositing the hardening fluid over the ink spots on the ink receiver without clogging the print head, thereby improving the stability and durability of the image as determined by improved wet adhesion due to cross-linking of the hardening fluid with the gelatin, while improving the reliability of the apparatus.