Electrostatic digital offset/flexo printing

A digital printing system comprising:

• a nano-enabled imaging member for forming an electrostatic latent image, the nano-enabled imaging member comprising an array of hole-injecting pixels disposed over a substrate and a charge transport layer disposed over the array of hole-injecting pixels, wherein each pixel of the array of hole-injecting pixels is electrically isolated and individually addressable;
• a first charging subsystem for uniformly charging a surface of the charge transport layer of the nano-enabled imaging member to form a substantially uniform negative surface charge on the charge transport layer;
• a digital latent image generating subsystem coupled to the nano-enabled imaging member to discharge a portion of the negative surface charge and form a latent image on the nano-enabled imaging member;
• a development subsystem for developing the latent image with an ink through a development nip formed by the development subsystem and the nano-enabled imaging member, wherein the ink comprises a charged offset ink and an optionally charged flexo ink;
• and
• a transfix subsystem for transferring and fixing the developed image from the nano-enabled imaging member onto a media.

An offset/flexo printing method comprising:

• providing a nano-enabled imaging member comprising an array of hole-injecting pixels disposed over a substrate and a charge transport layer disposed over the array of hole-injecting pixels, wherein each pixel of the array of hole-injecting pixels is electrically isolated and individually addressable via an array of thin film transistors disposed over the substrate;
• forming a negative surface charge on a surface of the charge transport layer opposite to the array of hole-injecting pixels;
• forming a latent image by selectively addressing one or more pixels of the array of hole-injecting pixels to inject holes at interface of the charge transport layer and each of the one or more selectively addressed pixels, such that a portion of the negative surface charge corresponding to the one or more selectively addressed pixels is discharged;
• optionally charging a UV-curable ink provided in proximity to a development nip formed by a development subsystem and the nano-enabled imaging member, wherein the optionally charged UV-curable ink comprises a charged UV-curable offset ink and an optionally charged UV-curable flexo ink;
• electrostatically developing the latent image at the development nip with the optionally charged UV-curable ink to form a developed image on the nano-enabled imaging member;
• partially UV-curing the developed image to form a partially cured developed image on the nano-enabled imaging member;
• transferring the partially cured developed image onto the media;
• and
• curing the partially cured developed image on the media.