A driving apparatus for a double-side printable office machine includes a
first driving part driving a pickup/transport unit, developing unit, and a
second reverse-transport roller of a double-side printing unit, and a
second driving part driving a fixing unit, a first reverse-transport
roller of the double-side printing unit, and a paper discharge unit, and a
controller controlling the first and second driving parts. A driving
method in the double-side printable office machine includes stopping a
first driving motor of the first driving part as a rear end of a sheet
passes through the developing unit and reaches a certain position of a
paper transport path, and driving the first driving motor of the first
driving part in a paper transport direction again as the sheet enters the
paper return path and reaches a certain position of the paper return path.
Accordingly, the double-side printable office machine can reduce a size
and a waste toner amount of the developing unit to decrease a
manufacturing cost and reduce wear and tear and noise of the developing
unit to enhance a lifespan and reliability of products by controlling
paper pickup/supply and developing operations to be performed separately
from an operation of fixing, discharging, and, in particular, returning
sheets for double-side printings.
