| 摘要 |
A Cellulose acylate film, in which X-ray diffraction intensity satisfies following formulae and a half-value width of the peak at 2theta<SUB>2 </SUB>is greater than 3° and not greater than 7°: <?in-line-formulae description="In-line Formulae" end="lead"?>0.40<=Ic<SUB>2</SUB>/(Iam<SUB>2</SUB>+Ic<SUB>2</SUB>) <=0.75;<?in-line-formulae description="In-line Formulae" end="tail"?> <?in-line-formulae description="In-line Formulae" end="lead"?>Iam<SUB>2</SUB>I<SUB>1</SUB>+{(I<SUB>3</SUB>-I<SUB>1</SUB>)/(2theta<SUB>3</SUB>-2theta<SUB>1</SUB>)x(2theta<SUB>2</SUB>-2theta<SUB>1</SUB>)}; and<?in-line-formulae description="In-line Formulae" end="tail"?> <?in-line-formulae description="In-line Formulae" end="lead"?>Ic<SUB>2</SUB>=<SUB>2</SUB>-Iam<SUB>2</SUB>,<?in-line-formulae description="In-line Formulae" end="tail"?> wherein when it is assumed that thetais the Bragg angle, 2theta<SUB>1 </SUB>and 2theta<SUB>3 </SUB>indicate 2theta at which the intensity becomes the minimum in the 2theta range of 4° to 5° and 14° to 16°, respectively, 2theta<SUB>2 </SUB>indicates 2theta at which the intensity becomes the maximum in the 2theta range of 5° to 10°, and I<SUB>1</SUB>, I<SUB>2 </SUB>and I<SUB>3 </SUB>indicate a diffractive intensity at 2theta<SUB>1</SUB>, 2theta<SUB>2 </SUB>and 2theta<SUB>3</SUB>, respectively.
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