Patent ID: 6597876
Filing Date: 2003-07-22
Classification: G03G

Abstract:
An image forming apparatus comprising:image forming means for forming an image on a recording material, wherein at least a part of the image forming means is in the form of a unit which is detachably mountable to a main assembly of the apparatus, said apparatus further comprising: a memory, wherein said memory is mounted to said unit, wherein said memory stores information relating a reference for changing a driving parameter of said image forming means, and setting means for setting the driving parameter in accordance with information relating to a degree of use of said unit which is renewed and the information relating to the reference, wherein said image forming means includes a photosensitive member, charging means for electrically charging said photosensitive member, exposure means for exposing said photosensitive member with light modulated in accordance with an image signal, developing means for developing a latent image formed on said photosensitive member with toner into a toner image, and transferring means for transferring the toner image from said photosensitive member to the recording material, wherein the information relating to the degree of use is a value obtained from at least one or two of a driving time period of said image forming means, a remaining amount of the toner, a number of outputted prints of the recording material, a number of printed dots, an exposing time period of the exposure means, and a thickness of a photosensitive layer of said photosensitive member.