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TONER SUPPLY AMOUNT
This copier has two different ways of controlling the amount of toner sup
plied. Normally, the detect supply system controls toner supply; however, a
fixed supply system can also be selected. When
unit is installed, the CPU automatically selects fixed supply mode.
1. Detect Supply Mode
When the data of SP Mode # 30 is "O", the standard detect supply mode B is
selected. If a low image density condition is detected, a small amount of toner
is supplied on each of the next 10 copy cycles as determined by the setting of
the data into SP Mode # 34 and # 31.
Toner supply starts 0.52 second after the scanner motor reverses. (Toner is
supplied at this time to prevent toner scattering on the copies.) The actual
amount of toner added is determined by controlling the ON time of the toner
supply solenoid, which activates a spring clutch.
2. Fixed Supply Mode
When the data of SP Mode # 30 is "1", or a color development unit is
installed, the fixed supply mode is selected. In this case, a fixed amount of
toner is added every copy cycle as determined by the setting of the SP Mode
# 32. When a color development unit is installed, a fixed amount of toner is
determined by the setting of SP Mode # 70. The length of time that the toner
supply solenoid is energized depends on the data set into the SP Mode # 32
(Black) or # 70 (color) and the paper size.
color toner development
a
2-41
16 April '88
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