| 摘要 |
PURPOSE:To prevent adhesion of toners onto a surface of a photoreceptor and to prevent a toner-filming phenomenon by constituting in such a way as to supply a specified solid fluorinated organic acid onto a surface of the photoreceptor. CONSTITUTION:In a dry copying device for electronic photograph, a polishing device 12 is deposited so as to contact with a surface of a photoreceptor 1. Further, through solid state fluorinated org. acids expressed by formulaIor II (Rf is fluorocarbon which is substituting with fluroine for hydrogen in the group such as alkyl, alkenyl or aryl, etc.; Ar is alkyl, aryl or aralkyl; X is carboxyl, or sulfonic acid or hydroy radical; l is 0-9, m, n are 1-3) are filled up into said device 12 and then an aimed coping device is made. As an actual example of compds. expressed by the formulaIor II, org. acids expressed by formula III or IV or the like are given. By this way, fluorinated org. acids are supplied to the surface of a photoreceptor 1 and adhesion of toners is prevented, thereby a deleterious change in photoreceptor characteristic is prevented. |
