Patent ID: 6451379
Filing Date: 2002-09-17
Classification: B41M,Y10T

Abstract:
A process for applying at least one ink-receiving layer to a non-porous substrate, said process comprising:(a) directly forming a porous base coat on a surface of said non-porous substrate, said porous base coat comprising a plurality of pores; (b) drying said base coat, followed by applying a first rewet liquid directly to said porous base coat to form a wetted base coat; (c) directly forming a top coat on said wetted porous base coat; and (d) drying said top coat, followed by applying a second rewet liquid to said top coat to form a wetted top coat, wherein said second rewet liquid comprises an aqueous-based solution containing at least one species selected from the group consisting of (1) a water-soluble polymer selected from the group consisting of polyvinyl alcohol, polyvinyl acetate, polyvinyl pyrrolidone, polyamides, cellulose derivatives, and polyethylene oxide, present in a concentration of about 0.1 to 5 wt %, (2) colloidal silica, present in a concentration of about 0 to 5 wt %, and (3) colloidal alumina, present in a concentration of about 0.1 to 5 wt %, wherein ad process is performed without cast-coating or lamination and whereby said at least one ink-receiving layer is printable with larger dots of a pigment-base ink gum without said second rewet liquid.