Back to results
US 9,284,469 B2Granted
Film-forming hydrophilic polymers for transfix printing process
AssigneeXerox Corporation
InventorsGuiqin Song, Gordon Sisler, Suxia Yang, Qi Zhang, Brynn Dooley, James D. Mayo, Gabriel Iftime, Chu-Heng Liu, Biby Esther Abraham
Life of this patent
Estimating the term…
Abstract
Provided is a coating composition for an image transfer member in an aqueous ink imaging system. The coating composition can include at least one hydrophilic polymer, at least one of hygroscopic plasticizer, at least one surfactant, and water.
Claims9
An indirect printing apparatus comprising:
- an intermediate transfer member;
- a sacrificial coating on the intermediate transfer member, the sacrificial coating comprising
- at least one hydrophilic polymer,
- at least one of hygroscopic plasticizer,
- at least one surfactant, and
- water;
- a coating mechanism for forming the sacrificial coating onto the intermediate transfer member;
- a drying station for drying the sacrificial coating;
- at least one ink jet nozzle positioned proximate the intermediate transfer member and configured for jetting ink droplets onto the sacrificial coating formed on the intermediate transfer member;
- an ink processing station configured to at least partially dry the ink on the sacrificial coating formed on the intermediate transfer member;
- and
- a substrate transfer mechanism for moving a substrate into contact with the intermediate transfer member.
9 more elements
An indirect printing process, comprising:
- providing an ink composition to an inkjet printing apparatus comprising an intermediate transfer member;
- applying a liquid coating material onto the intermediate transfer member, the liquid coating material comprising:
- at least one hydrophilic polymer,
- at least one of hygroscopic plasticizer,
- at least one surfactant, and
- water;
- drying the liquid coating material to form a sacrificial coating;
- ejecting droplets of ink in an imagewise pattern onto the sacrificial coating;
- at least partially drying the ink to form a substantially dry ink pattern on the intermediate transfer member;
- and
- transferring both the substantially dry ink pattern and the sacrificial coating from the intermediate transfer member to a final substrate.
8 more elements
Dependencies are inferred from the claim text.