Patent ID: 7764906
Filing Date: 2010-07-27
Classification: G03G

Abstract:
1. An image forming apparatus, comprising: an electrostatic latent image bearer configured to bear an electrostatic latent image; an electrostatic latent image former having a laser diode to form the electrostatic latent image on a surface of the image bearer, wherein the laser diode has a wavelength of 780 nm; an image developer configured to develop the electrostatic latent image with a developer comprising a toner to form a toner image on the surface of the image bearer; a transferer configured to transfer the toner image onto a receiving material; a fixer configured to fix the toner image to the receiving material; and a discharger having an LED as a discharging light to discharge charges remaining on the image bearer, wherein the LED has a peak wavelength of less than 500 nm, wherein the electrostatic latent image bearer comprises: wherein each of Ar wherein each of Ar 4 and Ar 5 represents an aromatic ring group optionally having a substituent; each of R 2 , R 3 , R 4 and R 5 represents an alkyl group optionally having a substituent, an aralkyl group optionally having a substituent, a vinyl group optionally having a substituent or an aromatic ring group optionally having a substituent, provided that at least two of them are aromatic ring groups each optionally having a substituent; X 2 represents a bivalent organic group; and R 2 and R 3 , and R 4 and R 5 optionally form a ring in combination, wherein each of Ar 6 , Ar 7 and Ar 8 represents an aromatic ring group optionally having a substituent; R 6 represents an alkyl group optionally having a substituent, an aralkyl group optionally having a substituent, a vinyl group optionally having a substituent or an aromatic ring group optionally having a substituent; X 1 represents a bivalent organic group; and Ar 6 and R 6 optionally form a ring in combination, and wherein each of Ar 9 and Ar 10 represents an aromatic ring group optionally having a substituent; each of R 7 , R 8 , R 9 and R 10 represents an alkyl group optionally having a substituent, an aralkyl group optionally having a substituent, a vinyl group optionally having a substituent or an aromatic ring group optionally having a substituent, provided that at least two of them are aromatic ring groups each optionally having a substituent; and R 7 and R 8 , and R 9 and R 10 optionally form a ring in combination.