An image forming apparatus and a process cartridge having a photoreceptor including an electroconductive substrate; and a photosensitive layer located overlying the electroconductive substrate and comprising a charge generation material, a charge transport material and an inorganic filler, wherein the content of the inorganic filler at a surface side of the photosensitive layer is greater than that at a bottom side of the photosensitive layer near the electroconductive substrate, and wherein an outermost layer of the photoreceptor has a water vapor permeability not greater than 50 gm.sup.31 224 h.sup.-1.

 
Web www.patentalert.com

< System and method for managing energy generation equipment

< Method for formulating paint

> Belt fixing unit with heat-resisting resin base member and image forming toner for use in the fixing unit

> Method and device for operating a combustion engine

~ 00298