Toner is attracted to the electrostatic latent image on the image drum surface, converting it into a visible toner image. Developing takes place through the contact

between the image drum and the developing roller.

(1) As the toner supply roller rotates while rubbing on the developing roller, a friction charge is generated between the developing roller and the toner, allowing the

toner to be attracted to the developing roller (the developing roller surface is charged positive and the toner, negative.)

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