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59results about How to "Large production" patented technology

Method of producing elliptically polarizing plate and image display apparatus using the elliptically polarizing plate

To provide a method of producing a broadband and wide viewing angle elliptically polarizing plate having excellent properties in an oblique direction, the elliptically polarizing plate, and an image display apparatus.The method of producing an elliptically polarizing plate of the present invention includes the steps of: forming a first birefringent layer on a surface of a transparent protective film; laminating a polarizer on a surface of the transparent protective film; and forming a second birefringent layer on a surface of the first birefringent layer, in which: the first birefringent layer and the polarizer are arranged on opposite sides of the transparent protective film; the step of forming a first birefringent layer includes the steps of: applying a liquid crystal material to an alignment substrate; forming a first birefringent layer on the substrate from the liquid crystal material; and transferring the first birefringent layer to a surface of the transparent protective film; and angles α and β satisfy a predetermined relationship (where, α represents an angle formed between a slow axis of the polarizer and a slow axis of the first birefringent layer, and β represents an angle formed between the absorption axis of the polarizer and a slow axis of the second birefringent layer).
Owner:NITTO DENKO CORP

Method of producing elliptically polarizing plate and image display using the elliptically polarizing plate

The present invention provides: a method of producing a broadband and wide viewing angle elliptically polarizing plate having excellent characteristics in an oblique direction as well; and an image display using the elliptically polarizing plate obtained through the method. The method of producing an elliptically polarizing plate according to the present invention includes the steps of: subjecting a surface of a transparent protective film to alignment treatment; forming a first birefringent layer by applying a liquid crystal composition onto the surface of the transparent protective film subjected to the alignment treatment; laminating a polarizer on a surface of the transparent protective film opposite to the surface subjected to the alignment treatment; and forming a second birefringent layer by laminating a polymer film on a surface of the first birefringent layer, in which the elliptically polarizing plate has a relationship represented by the following expression (1) 2α+40°<β<2α+50°  (1) in the expression (1), α represents an angle between an absorption axis of the polarizer and an alignment direction of the transparent protective film, and β represents an angle between the absorption axis of the polarizer and a slow axis of the second birefringent layer.
Owner:NITTO DENKO CORP

Methods for in-situ cleaning of abrasive belt/planer surfaces using dry ice and cleaning systems and device related thereto

Featured is a method and system for cleaning abrasive sanding and / or planing media, for example sandpaper, wide belt sanding belts, planers, grinding wheels or other abrasive surfaces while the media is either in-situ in the sanding, planing, grinding equipment or when removed. Additionally, the cleaning featured method and system can clean the media while the abrasive media is being used as well as when the abrasive media is not being used. In the cleaning method dry ice (CO.sub.2, solid carbon dioxide) particles are propelled towards the abrasive surface at a high velocity so the dry ice particles impact on the surface of the abrasive media at a high velocity. Additionally, the dry ice (CO.sub.2, solid carbon dioxide) particles are propelled as to impact the abrasive surface at varying angles and locations as necessary to effectively clean the abrasive surface. Further, the dry ice particles are propelled towards the abrasive media when it is in motion, for example rotating, so the dry ice particles impact the abrasive media at different locations of the media. The method and system allow the abrasive media to be cleaned while the abrasive media is being used for its' intended purpose. Thereby reducing equipment downtime usually associated with cleaning and / or changing the abrasive media due to becoming dirty and / or worn.
Owner:ARMSTRONG JAY T
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