Patent application number | Description | Published |
20080280229 | NEGATIVE-WORKING IMAGEABLE ELEMENTS AND METHODS OF USE - A radiation-sensitive composition includes a radically polymerizable component, initiator composition, a radiation absorbing compound, and a polymeric binder having recurring units that are derived from various ethylenically unsaturated polymerizable monomers provided that at least 40 mol % of the recurring units have a tertiary carbon atom in the backbone and the rest of the recurring units have a secondary or quaternary carbon atom in the backbone. This composition can be used to provide negative-working imageable elements that can be imaged and developed to provide lithographic printing plates that have desired imaging speed and excellent run length without the need for a post-exposure backing step. | 11-13-2008 |
20090042135 | MULTI-LAYER IMAGEABLE ELEMENT WITH IMPROVED PROPERTIES - Positive-working imageable elements comprise a radiation absorbing compound and inner and outer layers on a substrate having a hydrophilic surface. The inner layer comprises a specific polymeric binder represented by Structure (I): | 02-12-2009 |
20090263746 | METHOD OF MAKING LITHOGRAPHIC PRINTING PLATES WITH SIMPLE PROCESSING - A negative-working lithographic printing plate precursor can be imaged with infrared radiation and processed in a single step using a single processing solution that has a pH of from about 2 to about 11 and contains an anionic surfactant. This single processing solution both develops the imaged precursor and provides a protective coating that need not be rinsed off before lithographic printing. The lithographic printing plate precursor contains a particulate polymeric binder. | 10-22-2009 |
20090311482 | SUBSTRATE AND IMAGEABLE ELEMENT WITH HYDROPHILIC INTERLAYER - A substrate useful for forming lithographic printing plate precursors includes a metal or polymer support and an interlayer comprising a trialkoxysilyl polyethylene glycol acrylate having the following Structure (I): | 12-17-2009 |
20100021844 | NEGATIVE-WORKING IMAGEABLE ELEMENTS AND METHOD OF USE - Negative-working imageable elements can be imaged and processed with water to provide lithographic printing plates. These imageable elements have imageable layers that contain a particulate polymeric binder having polyetheramine side chains. Rapid processing speeds are also possible using water and optional mechanical rubbing means for processing the imaged element. | 01-28-2010 |
20100028806 | METHOD OF PREPARING LITHOGRAPHIC PRINTING PLATES - A negative-working lithographic printing plate precursor can be imaged with infrared radiation and processed in a single step using a single processing solution having a pH of from about 3 to 11. The precursor has a primary polymeric binder that comprises recurring units derived from one or more N-alkoxymethyl(meth)acrylamides, provided that such recurring units are present in the primary polymeric binder in an amount of at least 10% based on the total dry primary polymeric binder weight. In addition, the primary polymeric binder is present in an amount of from about 12 to about 70% based on total imageable layer dry weight. The imaged precursor can be processed off-press or on-press. | 02-04-2010 |
20100124721 | POSITIVE-WORKING IMAGEABLE ELEMENTS AND METHOD OF USE - An infrared radiation-sensitive positive-working imageable element has a substrate and single imageable layer that includes a first polymeric binder having urethane or urea moieties in its backbone. The first polymeric binder is also insoluble in water and soluble in a weakly alkaline solution. This imageable element can be imaged and processed using weakly alkaline processing solutions that are free of silicates and metasilicates, which processing solutions may also be used to “gum” the imaged and developed printing surface. | 05-20-2010 |
20110053085 | LITHOGRAPHIC PRINTING PLATE PRECURSORS AND STACKS - Lithographic printing plate precursors have been designed so that they can be stored, shipped, and used in stacks without interleaf paper between individual precursors. This is achieved by incorporating polymeric particles having an average diameter of from about 3 to about 20 μm into the outermost precursor layer such as an imageable layer or topcoat. The polymeric particles comprise a core of a crosslinked polymer and have grafted hydrophilic polymeric surface groups that are grafted onto the particle surfaces by polymerizing hydrophilic monomers in the presence of the crosslinked polymeric particles. The lithographic printing plates can be either negative- or positive-working elements. | 03-03-2011 |