During copying
After power is turned on, from the first to eighth copies the VL is measured (8 times). The mean
value of the results is used to determine the VL compensation for the flash output. In the same
way, from the 11th to 18th copies VD is measured (8 times). The mean value of the results is used
to determine VD compensation for the grid output. VD and VL compensations are alternately done
after every 10 copies during the copying run. These measurements and compensations are
continued for subsequent copy runs.
The flash output is changed by the selection of the image density level and magnification ratio. (In
the AID mode, the flash output is not changed, but only the development bias is changed.)
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