Electrophotographic copying printer
AssigneeFujitsu Limited
InventorsJunzo Nakajima, Masatoshi Kimura, Tadashi Matsuda
Life of this patent
Estimating the term…
Abstract
First and second optical latent image forming devices form an electrostatic latent image directly on a homogeneously charged recording medium surface. Each of the first and second optical latent image forming devices has the capability of discharging almost half the initial charges of the recording medium. The discharging effect of the first and second optical latent image forming devices forms the combined electrostatic latent image.
Claims9
An electrophotographic copying printer having a homogeneously charged recording medium surface, said copying printer comprising first and second optical latent image forming devices for forming an electrostatic latent image directly on said recording medium surface, each of said first and second optical latent image forming devices having the capability of discharging almost half the initial charges of said recording medium and the discharging effect of said first and second optical latent image forming devices forming the combined electrostatic latent image, said first optical latent image forming device discharging almost half said recording medium having the initial capability of the background, except for the image portion to be formed by said first optical latent image forming device in order to form a latent image on said homogeneously charged recording medium surface and said second optical latent image forming device discharging almost half said recording medium having the initial capability of the background, except for the image portion to be formed by said second optical latent image forming device in order to form a latent image on the latent image formed on said recording medium surface by said first optical latent image forming device.
Dependencies are inferred from the claim text.