| 摘要 |
PROBLEM TO BE SOLVED: To provide a novel hydroxygallium phthalocyanine crystal and an electrophotographic photosensitive member capable of outputting an image with few failures due to a ghost phenomenon not only in normal-temperature, normal-humidity environments but also even in low-temperature, low-humidity environments.SOLUTION: The hydroxygallium phthalocyanine crystal has peaks at Bragg angles 2&thetas;±0.2° of 7.5°, 9.9°, 25.2°, and 28.3° as determined by X-ray diffraction with CuKα radiation. The peak intensity of 9.9° is higher than the peak intensity of 7.5°. |
