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US 9,428,663 B2Granted
Indirect printing apparatus employing sacrificial coating on intermediate transfer member
AssigneeXerox Corporation
InventorsGuiqin Song, Gordon Sisler, Brynn Dooley, Qi Zhang, Suxia Yang, Valerie M. Farrugia
Life of this patent
Estimating the term…
Abstract
A sacrificial coating composition for an image transfer member in an aqueous ink imaging system. The sacrificial coating composition comprises a latex comprising polymer particles dispersed in a continuous liquid phase; at least one hygroscopic material; 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 made by depositing and drying a sacrificial coating composition on the intermediate transfer member, the sacrificial coating composition comprising:
- a latex comprising polymer particles dispersed in a continuous liquid phase;
- at least one hygroscopic material;
- 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.
10 more elements
An indirect printing process comprising:
- providing an ink composition to an inkjet printing apparatus comprising an intermediate transfer member;
- depositing and drying a sacrificial coating composition on the intermediate transfer member to form a sacrificial coating, the sacrificial coating composition comprising:
- a latex comprising polymer particles dispersed in a continuous liquid phase;
- at least one hygroscopic material;
- at least one surfactant;
- and
- water;
- 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.