| 摘要 |
<p>PURPOSE:To obtain a printing device, having duplicating function and low in noise, by a method wherein developer is constituted of large grain size toner, developing pressure transmitting function mainly, and small grain size toner, developing fixing function mainly. CONSTITUTION:Large grain size toner 8a' is a medium having the function of transmitting a pressure mainly upon transferring through a transfer roller 5a and provided with the grain size of about 50-100mum. The large grain size toner 8a' is not transferred to a recording paper 15 but remains on a latent image bearing body 1a and is removed by a cleaner 7a. Small grain size toner 8a'' is transferred to the recording paper 15 upon transferring through the transfer roller 5a and is provided with the grain size of about 5-50mum. The small grain size toner 8a'' is fixed onto the recording paper 15 in fixing process after transferring.</p> |
