Abstract: In a method of developing an electrostatic latent image formed on an electrostatic latent image-carrying member with a developer comprising a magnetic carrier and a toner in a non-contact manner under application of an oscillating electric field to a development region, the improvement comprising the surface of said magnetic carrier is covered with an insulating material, and magnetization (M) of said magnetic carrier when measured under application of a magnetic field of 1000 Oersted and weight average diameter (R) of the same expressed in terms of micro meter satisfy the following relation:30.ltoreq.M.ltoreq.-0.8 R+150(wherein 10.ltoreq.R.ltoreq.150).

Abstract: An image forming method by the electrophotographic process is disclosed. The image forming method comprises the steps of forming a plurality of toner images different in color on an image carrying member by repeating the developing of the electrostatic latent image on the image carrying member with developers containing both toner and carrier, and transferring said plurality of the toner images at a time onto a receiving material, in which the toner to be provided for at least the initial toner image formation is mixed with 0.2 to 2% by weight of metal oxide particles having a BET specific surface area determined by nitrogen adsorption of from 30 m.sup.2 /g to 60 m.sup.2 /g. The method provides clear multicolor images free from any deterioration in the resolution due to transfer doubling trouble as well as in the image quality due to transfer-off spots.

Abstract: A magnetic recording medium comprising a non-magnetic substrate, a magnetic layer comprising ferromagnetic particles, a binder group, and a titanate coupling agent, said binder group comprising at least one polyurethane resin and at least one of a nitrocellulose resin and an epoxy resin, said titanate coupling agent having 6 ligands wherein each ligand is free of ethylenically unsaturated double bonds.