发明名称 |
Dampening fluid for digital lithographic printing |
摘要 |
Different solvents for a dampening fluid are disclosed. The solvent is a volatile hydrofluoroether liquid or a volatile silicone liquid. Such liquids have a lower heat of vaporization, a lower surface tension, and better kinematic viscosity compared to water, which is the conventional solvent used in dampening fluids. The dampening fluids, which are relatively nonpolar, can be used in a combination with polar inks to form a new type of digital lithographic printing system. |
申请公布号 |
US9592699(B2) |
申请公布日期 |
2017.03.14 |
申请号 |
US201113284114 |
申请日期 |
2011.10.28 |
申请人 |
Xerox Corporation;Palo Alto Research Center Incorporated |
发明人 |
Stowe Timothy D.;Peeters Eric;Liu Chu-Heng |
分类号 |
B41N3/08;B41M1/06 |
主分类号 |
B41N3/08 |
代理机构 |
Prass LLP |
代理人 |
Prass LLP |
主权项 |
1. A process for variable digital lithographic printing, comprising:
applying a uniform layer of dampening fluid to a substantially smooth reimageable surface of an imaging member, the dampening fluid comprising a solvent which is a volatile silicone liquid; forming a latent image by evaporating the dampening fluid from selective locations on the reimageable surface of the imaging member to form hydrophobic non-image areas and hydrophilic image areas, the volatility of the solvent promoting evaporation of the dampening fluid under comparatively lower levels of applied energy; developing the latent image by applying a polar ink to the hydrophilic image areas formed on the reimageable surface; and transferring the developed latent image from the reimageable surface to a receiving substrate, wherein the solvent is a volatile silicone liquid having the structure of Formula (III)wherein each Rg and Rh is independently hydrogen, alkyl, or perfluoroalkyl; and b is an integer from 3 to 8. |
地址 |
Norwalk CT US |