Patent ID: 6896941
Filing Date: 2005-05-24
Classification: B41M,C08J,C09D

Abstract:
1. A white biaxially oriented polyester ink jet recording film for use as a base film for receiving an ink jet printer image, which satisfies the following requirements (1) to (7): (1) the content of titanium oxide particles having an average particle diameter of 0.1 to 0.5 μm in the polyester film is 5 to 20 wt %; (2) the polyester film has an average glossiness of 65 to 95%; (3) the polyester film has an X-ray diffraction intensity ratio (F-1/F-2) represented by the following formula (1):  wherein (F-1) is an X-ray diffraction intensity on a plane ({overscore (11)}0) parallel to the surface of the film and (F-2) is an X-ray diffraction intensity on a plane (100) parallel to the surface of the film; (4) the polyester film has a static friction coefficient of 0.3 to 0.6; (5) the polyester film has a thickness of 100 to 250 μm. (6) the polyester film has such whiteness that lightness (L*) and chroma (C*) defined in CIE 1976 satisfy the following expressions (1) to (3):   C *≧3  (2)  provided that C*={(a*) (7) the polyester film has an optical density of 0.7 to 1.6.