| 摘要 |
PROBLEM TO BE SOLVED: To provide an electrostatic recording device capable of minimizing the dirt caused on a surface of a transporting roll provided between a transferring unit and a fixing unit, and preventing deterioration of a toner image to be fixed on a paper sheet, in an electrostatic recording device applying fixing system forming the toner image to be fixed on either surface of the paper sheet and simultaneously performing fixation on both surfaces. SOLUTION: The transporting roll 1 is composed by covering the surface of a metallic roll 3 of 40mm diameter, with a conductive PFA tube 2 of 10<10>Ω.cm volume resistivity and 200μm thickness. The metallic roll is connected to a DC power source 4. To the paper sheet 5, where the toner image 6 and the toner image 7 is severally formed on either surface of the paper sheet, the transporting force is applied by the paper sheet driving roll and the transporting roll 1 is rotated is accordance with shifting of the paper sheet. On the DC power source, a voltage with the same polarity as the static charge polarity (positive) of the toner 6 held in contact with the transporting roll. The toner soil of the transporting roll is prevented by optimizing the value of VB1. |
