| 摘要 |
PURPOSE:To obtain superior electrophotographic characteristics and a good image by incorporating a specified butyl-etherified melamine-formaldehyde resin, a specified cured film and an organic electric charge generating material in an undercoat layer. CONSTITUTION:The undercoat layer contains the butyl-etherified melamine- formaldehyde resin having an number average molecular weight of >=1,500 and a combined foraldehyde number of 2-4 and a methylol number of 1-2 per one melamine ring, and the cured film containing an electron donative carboxylic compound and/or such a polycarboxylic anhydride as components, and the organic charge generating material, thus permitting excellent electrophotographic charcteristics and a good image to be obtained and the deterioration of characteristics at the time of repeated uses to be reduced. |
