摘要:
Imageable elements, useful as on press developable lithographic printing plate precursors, are disclosed. The elements comprise an imageable layer over a substrate and an one or more adhesion promoting ingredients. The imageable layer comprises a polymerizable compound and a polymeric binder. The adhesion promoting ingredients are titanium chelate and/or co-polymers of a monomer having a polethylene oxide side chain with a monomer having either an acidic group or an anhydride group that has been ring opened to form an acidic group or groups.
摘要:
Apparatus and method for exposing a lithographic printing plate wherein the apparatus includes a plurality of laser diodes emitting light of wavelength between 350 nm and 450 nm. The light from each of the laser diodes is directed onto the lithographic printing plate such that each spot on the lithographic printing plate receives light emitted from at least one of the laser diodes. Preferably, the lithographic printing plate is a violet-sensitive lithographic member and the lithographic member is a printing press plate. The power of each laser diode may be between 5 mW and 30 mW, and preferably the laser diodes emit light of wavelength between 390 nm and 430 nm.
摘要:
Massive model visualization in product data management (PDM) systems. A method includes storing a massive model database for a product data structure in a PDM server system, including storing a spatial bounding box hierarchy that acts as a spatial index for spatial bounding boxes of a plurality of unconfigured components of the product data structure and storing a cell table that associates cells of the spatial bounding box hierarchy to corresponding component identifiers of the product data structure. The method includes responding to component identifier requests from a client system by sending requested component identifiers from the product data structure to the client system. The component identifier requests correspond to visible components of an assembly represented by the product data structure. The method includes transmitting geometric data to the client system, the geometric data corresponding to components of the product data structure associated with the requested component identifiers.
摘要:
Systems and methods for massive model visualization in product data management (PDM) systems. A method includes storing a hierarchical product data structure by a product data management (PDM) system, including a plurality of occurrence nodes and component nodes. The method includes receiving a query that references an occurrence node and at least one cell index value and determining a query result corresponding to the query. The query result identifies at least one occurrence node that corresponds to the cell index value. The method includes forming a query result chain corresponding to the query result, the query result chain filtered by a structural criterion, and applying a configuration rule to the filtered query result chain to identify child nodes of the filtered query result chain that conform to the configuration rule, and thereby producing a configured spatial retrieval result.
摘要:
A system, method and computer program product for reconstructing B-Rep data for a graphic model. A method includes receiving B-Rep data of a graphic model, the B-Rep data including edges and coedges. The method includes constructing, from the B-Rep data, a vertex table having coordinates of a plurality of vertices of the graphic model and an edge table associating each edge of the graphic model with at least one of the plurality of vertices of the graphic model. The method includes storing the constructed edge table and vertex table associated with the B-Rep data.
摘要:
A system, method and computer program product for reconstructing B-Rep data for a graphic model. A method includes receiving B-Rep data of a graphic model, the B-Rep data including edges and coedges. The method includes constructing, from the B-Rep data, a vertex table having coordinates of a plurality of vertices of the graphic model and an edge table associating each edge of the graphic model with at least one of the plurality of vertices of the graphic model. The method includes storing the constructed edge table and vertex table associated with the B-Rep data.
摘要:
A radiation-sensitive composition includes a free-radically polymerizable component, an initiator composition capable of generating free radicals sufficient to initiate polymerization upon exposure to imaging radiation, an infrared radiation absorbing compound, and a polymeric binder. The initiator composition includes a unique polyonium borate comprising a polyvalent onium cation with multiple onium moieties and sufficient organic borate counterions to provide a net neutral charge. The radiation-sensitive composition can be used to prepare a negative-working imageable element that is sensitive to suitable imaging infrared radiation, can be imaged at relatively low energy, and can be developed either on-press or off-press.
摘要:
A radiation-sensitive composition and negative-working imageable element includes a polymeric binder that has a hydrophobic backbone and pendant salt groups that comprise a cation covalently attached to the hydrophobic backbone and a boron-containing anion forming a salt with the cation. The use of these particular polymers provides fast digital speed (high imaging sensitivity) and good printability (good shelf-life) even when the preheat step normally used between exposure and development, is omitted.
摘要:
The present invention provides a radiation sensitive composition suitable for us in on-press developable printing plates. The radiation sensitive composition comprises an initiator system including an onium salt and a radiation absorber. The initiator system is combined with a polymerizable material, and a polymeric binder including polyethylene oxide segments.
摘要:
A system, method, and computer program for tessellation, comprising tessellating a curve having a plurality of polygons; connecting said plurality of polygons in a preferred direction; decomposing polygons into a plurality of triangles; and whereby a mesh representation is creating from said plurality of triangles, and appropriate means and computer-readable instructions.