Patent ID: 7670743

Claim:
A method of forming an image, comprising: charging an an image bearing member by means of a charging device configured to charge the image bearing member, wherein the image bearing member has an established surface charge having an electric field intensity of at least 32 V/μm and operates at a linear velocity of at least 300 mm/sec, the image bearing member comprising: (i) an aluminum cylinder drum, (ii) a charge blocking layer overlying the aluminum cylinder drum, (iii) a moiré prevention layer overlying the charge blocking layer, and (iv) a photosensitive layer overlying the moiré prevention layer, consisting essentially of titanyl phthalocyanine having a primary particle diameter of not greater than 0.25 μm, and having a crystal form having a CuKα X ray diffraction spectrum having a wavelength of 1.542 Å such that a maximum diffraction peak is observed at a Bragg (2θ) angle of 27.2°±0.2°; main peaks at a Bragg (2θ) angle of 9.4°±0.2°, 9.6±0.2° and 24.0±0.2°, and a peak at a Bragg (2θ) angle of 7.3°±0.2°, as a lowest angle diffraction peak and having no peak between 9.4±0.2° and 7.3±0.2° and having no peak at 26.3°±0.2°; irradiating said surface of the image bearing member with an irradiating device configured to irradiate a surface of the image bearing member with plural irradiation beams emitted from a power source to form a latent electrostatic image on the image bearing member; developing the latent electrostatic image with a developing device configured to develop the latent electrostatic image on the image bearing member; transferring the developed image by a transfer device configured to transfer the developed image onto a transfer medium; and cleaning the image bearing member with a cleaning device configured to clean the image bearing member, wherein, the established surface charge having an electric field intensity of at least 32.1 V/μm is defined as the ratio of the absolute value (V) of the surface voltage of a non-irradiated portion of the image bearing member at a developing position to the layer thickness of the photosensitive layer (μm).