Patent Number: 6,169,868

Title: Electrophotographic apparatus

Abstract: The present invention relates to an electrophotographic apparatus in which maximum potential difference .DELTA.VD (volt) in a potential of a dark portion of the electrostatic image in the longitudinal direction, maximum potential difference .DELTA.VL in a potential of a light portion of the electrostatic image in the longitudinal direction, a value a (1/volt) represented by (variation amount in density, in the longitudinal direction, in the image formed by developing the light portion with the developing means)/(the maximum potential difference .DELTA.VD) and a value b (1/volt) represented by (variation amount in density, in the longitudinal direction, in the image formed by developing the light portion with the developing means)/(the maximum potential difference .DELTA.VL) satisfy a relation: in which 100.gtoreq..vertline..DELTA.VD.vertline..gtoreq.20 and 100.gtoreq..vertline..DELTA.VL.vertline..gtoreq.20.

Inventors: Yamazaki; Koji (Odawara, JP), Nakayama; Yuji (Yokohama, JP), Kawada; Masaya (Mishima, JP), Ohwaki; Hironori (Mishima, JP)

Assignee: Canon Kabushiki Kaisha

International Classification: H04N 1/06 (20060101); G03G 015/00 ()

Expiration Date: 01/02/2018