| abstract |
An electrophotographic image forming apparatus comprising: n an electrophotographic photoreceptor comprising: n an electroconductive substrate; n a charge generation layer; and n a charge transport layer in this order, n a charger; n an irradiator; n an image developer; and n a transferer applying an electric current not less than 65 μA to the electrophotographic photoreceptor, n wherein the charge generation layer comprises titanylphthalocyanine crystals having a CuKα 1.542 Å X-ray diffraction spectrum having plural diffraction peaks, wherein a maximum diffraction peak is observed at a Bragg (2 θ) angle of 27.2°; main peaks are observed at 9.4°, 9.6° and 24.0°; and a minimum diffraction peak is observed at 7.3°; and no diffraction peak is observed at an angle greater than 7.3° and less than 9.4°, wherein said angles may vary by ±0.2° and the minimum interval where no peak is observed between required peaks at 7.3 and 9.4 is 2.0 degrees absolute or more. |