Abstract
In an electrophotography system, tonner cleaning process is to wipe off a residual tonner and other adhered substances not transferred to a media such as a paper but left an image-carrier in the transfer process before next image forming cycle. Polyurethane is generally used for a cleaner blade to remove residual tonners. It is superior to other polymer for abrasion proof, has sufficient mechanical strength without adding reinforcing agent and the contamination resistant function to the image-carrier or transfer medium. This document introduces a new technology of cleaning blade to meet the trend in printing/imaging market such as high image quality, long service life and energy saving through the explanation of the blade function, the characteristic of polyurethane and its material designing.
