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| Number | Title | Issue Date |
| 7318994 | Compressible flexographic printing plate construction The present invention relates to an improved compressible flexographic printing plate that uses a compressible layer comprising a polyurethane (meth)acrylate resin and microspheres. The process of the invention produces a chemically fused printing plate that elimina... | 01/15/2008 |
| 7055429 | Edge cure prevention process An inkjet printer is used to apply an ink that is substantially opaque to actinic radiation in at least one wavelength region effective to cure the photosensitive printing plate to the edges and corners, of a printing plate after the plate has been trimmed (i.e., cu... | 06/06/2006 |
| 7032512 | Edge treatment of flexographic printing elements A method is provided for reducing UV exposure to edges of a printing plate which occurs when the printing plate is subjected to UV illumination. The method involves a spray head comprising one or more spray nozzles for spraying edge masking material toward the print... | 04/25/2006 |
| 6862987 | Porous resin stamp The present invention relates to a porous resin stamp which can repeatedly seal without supplying ink for a long period of time by beforehand soaking ink therein. The present invention also relates to a cartridge comprising the porous resin stamp and a stamp compris... | 03/08/2005 |
| 6772686 | Flexographic printing elements with improved air bleed An adhesive tape for flexographic printing including a first adhesive layer, a substrate on the first adhesive layer, and a second adhesive layer on the substrate. The substrate preferably includes a polymeric film layer and a foam layer, wherein the topography of t... | 08/10/2004 |
| 6655281 | Flexographic printing elements with improved air bleed An adhesive tape for flexographic printing including a first adhesive layer, a substrate on the first adhesive layer, and a second adhesive layer on the substrate. The substrate preferably includes a polymeric film layer and a foam layer, wherein the topo... | 12/02/2003 |
| 6484634 | Block copy sheet for lithographic printing plate A block copy sheet for lithographic printing plate to be interposed between a plate cylinder and a lithographic printing plate having a front surface and a back surface, at least the back surface being made of a material other than metals, wherein the blo... | 11/26/2002 |
| 6386104 | Under sheet for lithographic printing plate An under sheet for a lithographic printing plate which has an initial modulus of elasticity of 34×108 Pa or more, and has concavities and convexities having a central line average roughness (Ra) of less than 2 μm and Ra/Rz of 0.05 or more on ... | 05/14/2002 |
| 5835615 | Bar code printability gauge A printability gauge which make it possible for an observer by visual inspection of the gauge to determine the degree to which the dimensions of a printed bar code symbol deviate from the dimensions of an ideal bar code symbol defined by bars and spaces w... | 11/10/1998 |
| 5277721 | Method for making microporous marking structures A method for preparing a microporous ink-impregnated marking structure according to the invention involves use of a window-like frame instead of a conventional chase. The frame is placed on the upper face of the matrix board or mold so that the premix, co... | 01/11/1994 |
| 5275102 | Raised image plate construction with regions of varying stiffness in the image areas In a raised-image printing process, a plate construction includes a plate portion with an upper printing surface for printing an image on a substrate, the image including areas of greater ink coverage and areas of lesser ink coverage. Regions of greater a... | 01/04/1994 |
| 5094164 | Method and device for in-register exposing and in-register printing of a flexible letterpress form A method of in-register exposing and printing of a flexible letterpress form for spot varnishing, which comprises fixing on a copying cylinder in-register a flexible letterpress form having a register system in a region of the leading edge of the form, an... | 03/10/1992 |
| 5074209 | Raised image plate construction with regions of varying stiffness under the image areas In a raised-image printing process, a plate construction includes a plate portion with an upper printing surface for printing an image on a substrate, the image including areas of greater ink coverage and areas of lesser ink coverage. Regions of greater a... | 12/24/1991 |
| 4896595 | Print head and backer plate assembly for carton marker A marking machine for automatically marking cartons passing on an intermittently moving conveyor includes a printing head cyclically moved by a pneumatic cylinder into engagement with the cartons. The motion of the printing head is controlled by guide ele... | 01/30/1990 |
| 4828641 | Joining the cut edges of photopolymerized flexographic printing plates A method of joining the edges of flexographic printing plates on printing cylinders, which includes the following steps: (i) fixing the printing plates to make-ready cylinders by means of a first double-sided self-adhesive film having the same area as the prin... | 05/09/1989 |
| 4583460 | Printing roll with detachable sleeves and kit therefor Sleeves with different circumferences (and hence print repeat lengths) are removably mountable on a roll core, making use of radial compressibility of the radially inner region of each sleeve. The radially outer regions are incompressible, to ensure good ... | 04/22/1986 |
| 4561355 | Device for fixing a plate on a cylinder The invention relates to a device for fixing a plate on a cylinder, while permitting to quickly control, at certain instants, the application and fixation of this plate on a particular angular portion of this cylinder and, at other instants, the disengage... | 12/31/1985 |
| 4515739 | Matrix coating system and method of manufacture thereof A matrix coating system and method of manufacture thereof is presented wherein the matrix coating contains chemical blowing agents which permit low pressure molding and also the formation of printing plates having deep relief. The method of manufacture is... | 05/07/1985 |
| 4258125 | Method of making hand proofs of color prints A table has a mechanically driven draw bar squeegee mounted thereon to spread ink and other substances in a uniform manner. There is an interchangeable plurality of such squeegees which may be sequentially placed in said table to enable successive layers ... | 03/24/1981 |
| 4078494 | Flexible letter press printing plate A letter press printing plate is disclosed for wrapping around a drum. The printing surface is formed with a light-sensitive material layer on a metal backing plate with two different levels, the high level representing areas of solid or dark tones of pri... | 03/14/1978 |
| 3983808 | Method and apparatus for applying flexographic printing plates to the printing cylinders of a multi-cylinder printing machine Apparatus for mounting flexographic printing plates by adhesive on the printing cylinders of a multi-cylinder printing machine has a rotatable hub for supporting each of the cylinders in turn, a platform for supporting each printing plate in a plane tange... | 10/05/1976 |
| 3932251 | Method for manufacturing an ink-containable stamp A method for manufacturing an ink-containable stamp used for a printer of a computer or the like is disclosed, wherein a number of printing types and a drum or plate are moulded from a mixture comprising synthetic resin consisting of polyvinyl acetate res... | 01/13/1976 |
