SYSTEMS AND METHODS FOR DELIVERING AQUEOUS PEARLESCENT DIGITAL PRINTING INK COMPOSITIONS USING DIGITAL OFFSET LITHOGRAPHIC PRINTING TECHNIQUES

摘要

A system and method are provided for producing variable pearlescent image elements or portions on image receiving media substrates using a variable digital data offset lithographic architecture which provides for varying lithographic images between cycles of a marking device. Pearlescent inks are provided with a solid particle pearlescent pigment components in a proportion of at least 30% by weight suspended in solution in an ink composition. Pearlescent inks are provided with a solid particle pearlescent pigment components having particle sizes in excess of ten microns suspended in solution in the ink composition. The disclosed systems and methods provide for variable pearlescent image elements or portions to be formed on an image receiving medium substrate separate from, or in combination with, other ink image elements or portions applied using other inks in a single device, and/or in a single pass of the image receiving media substrates through an image forming system.

主权项

1. A system for forming variable pearlescent image elements or portions on image receiving media substrates, comprising:
at least one variable data lithography device, the at least one variable data lithography device including:
an imaging member with a reimageable surface supporting digital data reimaging for lithographic image transfer to the image receiving media substrates;a wetting solution source that deposits a layer of wetting solution on the reimageable surface;an optical patterning subsystem that patterns a latent image according to received digital data in the layer of wetting solution through selective evaporation of the layer of wetting solution;a pearlescent ink source that applies pearlescent ink to the reimageable surface to produce a pearlescent inked image from the patterned latent image for transfer of the pearlescent image elements or portions to the image receiving media substrates; at least one other imaging ink source that provides at least one other ink for separate formation of other image elements or portions on the image receiving media substrates; and a curing device that cures image elements on the image receiving media substrates, the image receiving media substrates (1) being marked with the pearlescent image elements or portions using the pearlescent ink supplied by the pearlescent ink source, (2) being marked with other ink image elements or portions using the at least one other ink for the separate formation from the at least one other imaging ink source, and (3) having the pearlescent image elements or portions and the other ink image elements or portions cured as the image elements on the image receiving media substrates by the curing device to produce an output document that includes variable pearlescent image elements or portions in different parts of the output document.