| abstract |
A carbon fiber prepreg includes carbon fiber bundles containing numerous carbon fiber single yarns and a matrix resin impregnated in the carbon fiber bundles, the value of the coefficient of variation, displayed as a percentage, of the number of the carbon fiber single yarns contained per unit area being 10% or less, wherein in each unit area, the width and the depth from the surface of the carbon fiber prepreg in the cutting plane when the carbon fiber prepreg is cut at right angles to the array direction (direction of the fiber axis) of the carbon fiber bundles are 100 μm and 30 μm respectively. A carbon fiber prepreg may have a projected area of a carbon fiber single yarn which has a fiber orientation angle of 0°±3° or more is 2% or less of the projected area of all carbon fiber single yarns. |