Developer for developing latent electrostatic images and method of forming images by using the developer

An image formation method of forming a toner image corresponding to a light image on a photoconductor by use of (i) a photoconductor which comprises a light-transmitting support, and at least a light-transmitting electroconductive layer and a photoconductive layer which are successively overlaid on said light-transmitting support, (ii) a developer comprising an electroconductive magnetic carrier which comprises electroconductive magnetic carrier particles, each carrier particle comprising a magnetic base particle and an electroconductive layer formed on the surface of said magnetic base particle, a magnetic high-resistivity carrier, and an electrically insulating toner, (iii) development means which is disposed on the side of said photoconductive layer of said photoconductor and supplies said developer onto the surface of said photoconductor, (iv) voltage application means for applying a voltage across said light-transmitting electroconductive layer of said photoconductor and said development means, and (v) exposure means which is disposed on the side of said light-transmitting support of said photoconductor in such a configuration as to be directed toward said development means, comprising the steps of:

• bringing said developer into contact with the surface of said photoconductor;
• and
• applying a light image to said photoconductive layer located near a position where said light-transmitting support and said development means are mutually directed, from the side of said light-transmitting support, under the application of a voltage across said light-transmitting electroconductive layer and said development means.