Oki OKIPAGE 8iM Maintenance Manual

Contents

41260201TH Draft 25 /106OPC drumTransfer rollerPaperHigh-voltagepower supply2 The toner applied to the developing roller is thin-coated by the developing blade.3 A toner adheres to the exposure part of the OPC drum in the contact part between theOPC drum and developing roller. This causes the electrostatic latent image to bechanged to a visible image.(6) TransferThe transfer roller is composed of conductive sponge material. This roller is set so that thesurface of the OPC drum and sheets of paper will adhere closely.A sheet of paper is placed on the surface of the OPC drum and the positive charge oppositeto the negative charge of a toner is applied from the reverse side by the transfer roller.When a high negative voltage is applied from the power supply to the transfer roller, thepositive charge induced on the surface of the transfer roller moves to the paper side at thecontact part between the transfer roller and the sheet of paper. The positive charge on thelower side of the sheet of paper then causes the negatively charged toner adhering to thesurface of the OPC drum to move to the upper side of the sheet. This enables transfer to thesheet of paper.(5) DevelopmentThe electrostatic latent image on the surface of the OPC drum is changed to a visible tonerimage by applying a toner to it. Development is performed in the contact part between theOPC drum and developing roller.1 The sponge roller negatively charges a toner and applies it to the developing roller.Charge rollerDeveloping bladeDeveloping rollerOPC drumSponge roller