Operation; 1St Transfer Output Control; 1St Transfer Roller Pressure/Retraction Control - Konica Minolta A00F011 Service Manual

Theory of operation Ver. 1.0 Nov. 2007

13.3 Operation

13.3.1

1st transfer output control

• To transfer the toner image from the photo conductor to the transfer belt, the transfer volt-
age is applied to the 1st transfer roller.
• A charge of the same potential is applied to each of the 1st transfer rollers.
• The transfer voltage is applied after the 1st transfer roller/Y, M, C is pressed against the
transfer belt for color mode.
• The transfer output is turned OFF after the last image moves past the 2nd transfer sec-
tion.
13.3.2

1st transfer roller pressure/retraction control

• To extend the service life of the photo conductor/Y, M, C, the pressure position of the 1st
transfer roller is changed between the monochrome mode and the color mode.
The 1st transfer roller/K is not provided with a retraction mechanism; the transfer belt is
pressed against the photo conductor/K at all times.
• The Transport motor provides the drive for pressure/retraction operation of the 1st trans-
fer roller/Y, M, C.
A. Monochrome mode
• The 1st transfer roller/Y, M, C is moved inward the unit (for retraction) and the photo con-
ductor/Y, M, C is stopped. The transfer roller is moved (retracted) and the photo conduc-
tor is stopped also in the ordinary standby state.
B. Color mode
• During the 1st transfer in the color mode, the 1st transfer roller/Y, M, C is moved toward
the photo conductor (pressed) so that transfer belt is pressed against the photo conduc-
tor.
C. Others
• The transfer roller is moved (retracted) and the photo conductor is stopped in the ordi-
nary standby state.
13. Transfer section (1st transfer)
37