| 摘要 |
PROBLEM TO BE SOLVED: To form an image of sharp image quality by preventing unnecessary bleeding due to thermal diffusion in recording by a method wherein a charged drum and a dot latent image forming device which draws a scattered-point-like latent image on the charged drum by radiating laser beams are arranged in a developing part. SOLUTION: A developing part 2 is equipped with a coating storing part 21 storing white powdery coating, a developing sleeve 22 feeding the white powdery coating from the coating storing part 21, a blade 23 controlling a sticking thickness of coating to the developing sleeve 22, a charged drum 24 consisting of photosensitive material, and a dot latent image forming device 25 which draws a scattered-point-like latent image by irradiating a surface of the charged drum 24 with laser beams. The dot latent image forming device 25 is equipped with a laser diode 30, and a surface of the charged drum 24 is scanned with laser beams emitted from the laser diode 30. Thereby, the scattered point-like latent image is drawn on the surface of the charged drum 24. Besides, an photoelectric charge is generated in the latent image part of the charged drum 24. |
