Abstract: A polarizer protective film comprising: a cellulose ester; a saccharide ester having an ester of compound (A), the compound (A) having one furanose structure or one pyranose structure in the molecule, wherein all or a part of OH groups in the compound (A) are esterified, or an ester of compound (B), the compound (B) having two to twelve of at least one of a furanose structure and a pyranose structure bonded in the molecule, wherein all or a part of OH groups in the compound (B) are esterified; and a compound represented by Formula (R) or (Ra):

Abstract: A retardation film, contains: a cellulose derivative; and an esterified compound in which all or a part of OH groups in a compounds (A) containing one of a furanose structure and a pyranose structure or in a compound (B) in which 2 to 12 of at lease of a furanose structure and a pyranose structure are bonded, are esterified.

Abstract: A retardation film which contains a cellulose derivative and a plasticizer wherein the thickness of the film is 10 to 50 ?m, Ro in Equation (i) is in the range of 30 to 100 nm, Rt in Equation (ii) is in the range of 100 to 300 nm, and S in Equation (iii) is 0.0002 or more but not exceeding 0.030. Ro=(nx?ny)×d ??Equation (i) Rt=S×d ??Equation (ii) S=((nx+ny)/2?nz) ??Equation (iii) (where “nx” is a maximum refraction index of the film surface, “ny” is a refraction index in the direction perpendicular to “nx,” “nz” is a refraction index along the thickness of the film, and “d” is the thickness of the film.

Abstract: A cellulose ester film comprising a compound represented by Formula (1): Formula (1) B-(G-A)n-G-B, wherein B represents a benzene monocarboxylic acid residue; G represents an alkylene glycol residue having 2-12 carbon atoms, an aryl glycol residue having 6-12 carbon atoms, or an oxyalkylene glycol residue having 4-12 carbon atoms; A represents an alkylene dicarboxylic acid residue having 4-12 carbon atoms or an aryldicarboxylic acid residue having 6-12 carbon atoms; and n represents an integer of 1 or more.

Abstract: A method for producing a roll of an optical compensation film, in the effective width of which an angle of the slow axis in the film face with the width direction of the film is within the range of ±1° and an angle of the fast axis in the film face with the length direction of the film is within the range of ±1°, wherein the angle of the fast axis in the film face with the length direction is cyclically varied by a cycle of from 1.5 m to 500 m in the length direction of the film and the minimum amplitude of the variation is within the range of from 0.1° to 1°.