Transfer mechanism, image-forming device using same and method for mfg. transfer device

Abstract

A transfer device for transferring an image on an image carrier 1 to a recording material 2, the transfer device comprises a transferring member 4 adapted to nip and convey the recording material 2 between the transferring member 4 and the image carrier 1, a guard resin layer 5 having a surface microhardness not smaller than surface microhardness corresponding to polyimide, the guard resin layer 5 provided on a surface of the transferring member 4, and an adjustment resistance layer 6 provided as a ground layer of the guard resin layer 5, the adjustment resistance layer 6 adapted to inhibit an accumulation of charge in the guard resin layer 5. Or, the guard resin layer 5 made of an epoxy resin is provided on the surface of the transferring member 4, the adjustment resistance layer 6 having a smooth interface with the guard resin layer 5, the adjustment resistance layer 6 adapted to inhibit accumulation of charge in the guard resin layer. Furthermore, a scraper 8 for cleaning is provided on the surface of the transferring member 4 so as to contact with the surface of the transferring member. An image-forming apparatus is constructed by using the transferring device.

Description

technical field [0001] The invention relates to a transfer mechanism for transferring an image on an image carrier to a recording material. In particular, the present invention relates to an improvement of a transfer mechanism including a transfer member for transferring a recording material through a gap between the image carrier and the transfer member; and to an image forming apparatus using the transfer member and manufacturing a transfer member. method of printing. Background technique [0002] By way of example below, a conventional image forming apparatus has been arranged to operate in an electrophotographic processing method comprising the steps of forming an electrostatic latent image on an image carrier (image carrier broadly includes: a latent image carrier such as a photosensitive drum, a latent combination of an image carrier and an intermediate transfer drum for intermediate transfer and holding of an image on a latent image carrier); deve...

AI Technical Summary

Problems solved by technology

However, this type of transfer mechanism is technically disadvantageous in that as the recording material moves, more external additives for toner adhere to the surface of the transfer roller, increasing the distance between the cleaning blade and the transfer roller. friction coefficient of the surface, and thus apply a greater rotational load to the transfer roller

[0011] The technical disadvantage of this strength control method is that even if the strength patch transferred to the transfer roller can be removed with a cleaning blade, the remaining toner will gradually pollute the surface of the transfer roller, and the reflection on the surface of the transfer roller The rate is reduced, therefore, the detection of intensity patches cannot be accurately performed

Therefore, there is a worrying case that when the transfer is performed under a high electric field during OHP paper or board or double-sided printing, a sufficient transfer electric field cannot be obtained, causing imperfect transfer

[0020] Even if an epoxy resin layer having high abrasion resistance is provided on the surface of the metal roller instead of the polyimide resin layer, there is still a worrying situation that even if the cleaning property of the metal scraper can be kept good, the Oxygen layers have a particularly high electrical resistance, and charge buildup can cause imperfect transfers like polyimide resin layers

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