Patent ID: 6487385
Filing Date: 2002-11-26
Classification: G03G

Abstract:
A developing apparatus for developing an electrostatic latent image on a latent substrate using a liquid developer in which toner particles are dispersed in a dielectric fluid, wherein the latent image substrate moves at a predetermined velocity in a first direction, comprising:a developing roller facing the latent image substrate with a predetermined spacing, for supplying the liquid developer to the latent image substrate while rotating at a peripheral velocity in a second direction, wherein the second direction is opposite to the first direction in a developing region on the latent image substrate, wherein a peripheral velocity ratio of the peripheral velocity of the developing roller to the predetermined velocity of the latent velocity image substrate is determined so as to maximize a solid component ratio of a developed toner layer on the latent image substrate, wherein a peak peripheral velocity ratio (kt) providing a maximum solid component ratio of a developed toner layer is represented by kt=(2mt/L&rgr;c)+1, wherein mt is a saturated amount of developer toner, L is a length of the predetermined spacing, &rgr; is a density of the liquid developer, and c is concentration of the liquid developer.