Developer for use in electrophotography, and image formation method using the same

An electrophotographic image formation method comprising the steps of:

• forming latent electrostatic images on the surface of a rotatable photoconductor drum;
• developing said latent electrostatic images to visible toner images by a liquid developer which is deposited on said latent electrostatic images by development means;
• regulating the amount of said liquid developer deposited on said latent electrostatic images to a predetermined amount by squeegee roller means which is disposed downstream of said development means in terms of the direction of the rotation of said photoconductor drum, with a predetermined gap between said squeegee roller means and said photoconductor drum, after the development of said latent electrostatic images;
• applying a voltage to said visible toner images formed on said photoconductor drum, thereby causing an electric current to flow through said visible toner images to said rotatable photoconductor drum by a a voltage application roller means which is out of contact with said visible toner images and disposed downstream of said squeegee roller means in terms of the direction of the rotation of said photoconductor drum, with a predetermined gap between said voltage application roller means and said photoconductor drum;
• and
• transferring said visible toner images to a transfer sheet, with said liquid developer comprising a toner and a carrier liquid in which said toner is dispersed, said toner comprising at least two kinds of toner particles with different shapes selected from the group consisting of spherical toner particles, fibrous toner particles and amorphous toner particles, each of which toner particles comprises a coloring agent and a binder resin.