Abstract: An optical film comprising a cycloolefin resin or a cellulose ester resin, wherein (a) at least one of edges of the optical film is slit; (b) an average surface roughness Ra specified in JISB0601-2001 of a cross-section of the optical film formed by slitting is 0.05 to 0.9 ?m; and (c) a width of the optical film is 1400 mm or more.

Abstract: An optical film manufacturing method, comprising steps of: forming a film by casting a liquid-state resin; embossing both ends of the formed film in a lateral direction of the film so as to form embossed sections for conveying the film; conveying the film having the embossed sections by a freely rotatable conveyance roller; trimming and removing the embossed sections of the film after the conveying step; and winding up the film.

Abstract: An optical film manufacturing method, comprising steps of: forming a film by casting a liquid-state resin; embossing both ends of the formed film in a lateral direction of the film so as to form embossed sections for conveying the film; conveying the film having the embossed sections by a freely rotatable conveyance roller; trimming and removing the embossed sections of the film after the conveying step; and winding up the film.

Abstract: A method of manufacturing an optical film using a solution casting method comprising the steps of: (i) preparing an initial dope comprising a cellulose ester resin; (ii) preparing a casting dope by diluting the initial dope with a diluting solution via inline dilution, the diluting solution having a solid content lower than a solid content of the initial dope; and (iii) casting the casting dope to form a cellulose ester film, wherein (a) an average orientation angle of the slow axis is 90°±1.5° or 0°±1.5° against a film transport direction of the cellulose ester film; and (b) a fluctuation of a viscosity or a fluctuation of a density of the casting dope is controlled so that a relative standard deviation of the fluctuation of the viscosity or the fluctuation of the density of the casting dope is in the range of 0.01-1%.

Abstract: An optical film comprising a cycloolefin resin or a cellulose ester resin, wherein (a) at least one of edges of the optical film is slit; (b) an average surface roughness Ra specified in JISB0601-2001 of a cross-section of the optical film formed by slitting is 0.05 to 0.9 ?m; and (c) a width of the optical film is 1400 mm or more.

Abstract: An ablation image forming material is disclosed. In the image forming material the colorant particles are metal particles which are magnetized upon application of to magnetic force, a production method of the same, and an image forming apparatus.

Abstract: An image-forming material having an image-forming layer on a support a liquid comprising colorant particles and a binder and a protective layer on a support in this order is disclosed. The Vickers hardness H of the whole on an image forming side is from 50 to 500. An exposure is performed using a light having high intensity energy and an exposed area of said image-forming layer is then removed to form an image. The abrasion resistance of the image forming material is improved without deteriorating sensitivity and resolution.