| 摘要 |
<p>PURPOSE:To ensure high efficiency of transfer to recording paper for an electrophotographic developer used for developing an electrostatic latent image in an electrophotographic process, especially a two-component developer used for development with a magnetic brush and to suppress a change of a developed image due to a humidity change. CONSTITUTION:In an electrophotographic developer obtd. by mixing a magnetic carrier 1 with a negatively chargeable toner 2 so that the concn. of the toner 2 is regulated to 2-15wt.%, the toner 2 has -5 to -25muC/g extent of electrostatic charge attained by electrostatically sticking fine powder 3 for enhancing fluidty to the surface of a toner 2a having -20 to -50%muC/G extent of electrostatic charge so that the extent of electrostatic charge of the toner 2a is reduced to 2/ 3 to 1/ 5.</p> |
