发明授权
US08652758B2 Lithographic imaging and printing with printing members having fusible polymeric particles
失效
平版印刷成像和具有可熔融聚合物颗粒的印刷部件的印刷
- 专利标题: Lithographic imaging and printing with printing members having fusible polymeric particles
- 专利标题(中): 平版印刷成像和具有可熔融聚合物颗粒的印刷部件的印刷
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申请号: US12560977申请日: 2009-09-16
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公开(公告)号: US08652758B2公开(公告)日: 2014-02-18
- 发明人: Frederick R. Kearney , Kevin Ray , Donald Sundberg , John Tsavalas
- 申请人: Frederick R. Kearney , Kevin Ray , Donald Sundberg , John Tsavalas
- 申请人地址: US NH Hudson
- 专利权人: Presstek, Inc.
- 当前专利权人: Presstek, Inc.
- 当前专利权人地址: US NH Hudson
- 代理机构: Bingham McCutchen LLP
- 主分类号: G03F7/00
- IPC分类号: G03F7/00 ; G03F7/26 ; B41N1/00 ; B41F7/00
摘要:
Embodiments of the present invention involve printing members that utilize a particle-fusion imaging mechanism but avoid susceptibility to handling damage. In particular, printing plates in accordance with the invention may utilize two phases, and these may originate, during manufacture, as two particle systems. Both systems are initially dispersed in a single coating applied as a layer, or in multiple coatings applied as adjacent layers, on a substrate. The second particle system exhibits a glass-transition or thermal coalescing temperature well above room temperature and also above the temperature at which the coating is dried. The coalescing temperature of the first particle system is below the drying temperature. As a result, when the coating is dried, the first particle system coalesces and forms a binder that entrains the second particle system, which has not coalesced. The binder formed by the first particle system is preferably insoluble in aqueous liquids, but is swellable or softened by such liquids, whereas the binder formed by the second particle system is preferably insoluble in and not swellable by aqueous liquids. Aqueous insolubility allows the dried (and ready-to-image) coating to resist handling damage, while swellability facilitates development.
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