Image Transfer; Paper Transfer; Fusing; Process Control - Ricoh D014 Service Manual

Image Transfer

The following measures have been adopted to deal with the problems of blade service life
and dirty OPC drums, caused by the slippage of PxP toners on the ITB:
A lubrication brush roller and lubricant counter blade (both for ZnSt) have been added
downstream of the counter blade and brush system of the B132/B200 ITB cleaning
system.

Paper Transfer

Reducing the amount of toner in order to deal with the problem of the short service life
of the cleaning blade, caused by the slippage of PxP toners on the ITB.
Reverse bias is applied in the intervals between sheets on the ITB.
A new lift device has been designed to raise and lower the PTR (raise it during paper
transfer and lower it away from the ITB and bias roller when the machine is idle).

Fusing

The fusing unit employs a halogen-belt design (halogen fusing lamps with fusing belt) in
order to shorten the warm-up time to less than 75 to 90 sec.
The fusing unit employs a sponge hot roller designed for a higher line speed and better
grip at the nip, and also employs a new pressure roller mechanism that keeps the
pressure roller separated from the hot roller when the machine is idle (this prevents
warping of the soft sponge of the hot roller).
The effect of the paper pointing downward as it exits the nip between the hot roller and
pressure roller improves separation and reduces the streaking on the copies.

Process Control

The length of time to complete process control is much shorter.
The number of ID sensor patterns has been reduced.
The precision of the TD sensor has been improved.

OPC Drums

Adoption of the charge corona system for the K PCU improves resistance to nitrogen
oxides (NOx) in the air.

Toner

The new PxP toner used in the machine has a lower melting point. This allows a shorter
warm-up time, reduces the amount of heat required for fusing, and achieves more even
density in images.
SM
CÓPIA NÃO CONTROLADA
Differences Between the D014/D015 & B132/B200
D-51
CÓPIA NÃO CONTROLADA
D014/D015/D078/D079