Technical information

FZB3COPYlNGPROCESS
A. Blank Exposure Mechanism
The blank exposure mechanism is used to remove
the potential from the non-image sections of the
drum in the REDUCTION mode or lo suit paper
sizes; see p. 3-37.
The light from the pre-exposure lamp is reflected
by the reflecting plate and directed onto the
photosensitive drum.
The non-image section between two sheets of
copy paper is kept free of toner by lowering the grid
bias of the primary corona unit, instead of using the
blank exposure mechanism to remove the potential
of the drum.
B. Ozone Filter
The fan unit is equipped with an ozone filter, which
breaks down the ozone generated by the coronas
into oxygen by catalytic action.
2-6 COPYAIGHT 0 1592 CANON ING.
CANON NPZlZO/ZMO RN.0 MAY 1990 PAINTEO IN JAPAN IIMPRIME AU JAPONI