Ink film constructions

摘要

An ink film construction comprising: (a) a printing substrate; and (b) at least one ink film, fixedly adhered to a top surface of the printing substrate, the ink film having an upper film surface distal to the top surface of the substrate, wherein a surface concentration of nitrogen at the upper film surface exceeds a bulk concentration of nitrogen within the film, the bulk concentration measured at a depth of at least 30 nanometers below the upper film surface, and wherein a ratio of the surface concentration to the bulk concentration is at least 1.1 to 1.

主权项

1. An ink dot construction comprising:
(a) a first fibrous printing substrate selected from the group consisting of an uncoated fibrous printing substrate and a commodity coated fibrous printing substrate; and (b) a plurality of ink dots, each ink dot of said ink dots fixedly adhered to a top substrate surface of said first printing substrate, said ink dots containing at least one colorant dispersed in an organic polymeric resin, each said ink dot covering a continuous area of said top substrate surface;
each said ink dot being disposed entirely above said continuous area, such that a projected perpendicular line, extending down towards said top substrate surface, first meets said ink dot, before meeting said top substrate surface, at every point in said continuous area;each said ink dot having a diameter of 15 to 300 micrometers;each of said ink dots being characterized by a dimensionless aspect ratio (Raspect) defined by:
Raspect=Ddot/Hdot wherein Ddot is said diameter; and Hdot is said average thickness:said aspect ratio being at least 50,each of said ink dots having an average or characteristic thickness of at most 1,800 nm.