113
x Pratemaking / Master Feed / Ejection Section
chap.2
The mode is detected under the following conditions
2A mode
When the B mode sensor (PS4) is photointerrupted, the A / C mode sensor (PS3) detects the edge of photoin-
terrupting
f
photopasing.
*With the power ON, the A mode is determined when the B mode sensor is in the photointerrupting state
and the A/C mode sensor is in the photopassing state. If not in the A mode with the power ON, the mas-
ter clump opening / closing lever rotates to the B mode and stops. When the lever stops at the B mode,
the drum rotates with the drum rotation switch and returns to the A mode at the stop position.
2B mode
When the A/C mode sensor is photointerrupted, the B mode sensor detects the edge of photointerrupting /
/photopassing or photopassing - photointerrupting.
2C mode
When the B mode sensor is photopassing, the A/C mode sensor detects the edge of photointerrupting
f
pho-
topassing.
(1) A / B / C Mode Sensor
Circuit
Operation / Sequence
3. Function of Parts
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