| 摘要 |
Method and apparatus for image development, wherein a space gap between a latent image holding member and a developer carrying member is made wider, at a developing section, than thickness of the developer layer on the surface of the developer carrying member, and both members are opposed each other for developing operation, and wherein the developer to be used is composed of electrically insulative toner particles having an average particle diameter of from 5 mu to 30 mu and very fine particles having a particle diameter smaller than that of the toner particles and capable of assisting electric charging of the toner particles in a polarity opposite to that of the latent image, the fine particles being added to the toner particles and mixed together.
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