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41388601TH Rev.2 31 /
2.5.2 Other sensors
1 Paper Empty sensor
This sensor checks whether the paper cassette is empty.
2 Paper Near sensor
This sensor checks whether the paper cassette is near empty.
3 MPF Paper Empty sensor
This sensor checks whether the front feeder has paper.
4 MPF Hopping switch
This microswitch checks whether the front feeder table is in the up position or in the down
position.
5 Stacker Full sensor
This sensor checks whether the stacker is full.
6 Paper Size switch
This sensor detects the size of paper in the paper cassette.
7 EP Up/Down sensor (one for each of colors, Y, M, C and K)
This sensor checks whether the I/D unit is in the up position or in the down position.
8 Toner K, Y, M and C sensors
By measuring the time interval between regular opening movements of each sensor’s lever,
the sensor checks whether its toner cartridge is empty.
9 Temperature sensor
See Section 2.6 (Transfer Control Responds to Environmental Changes)
0 Humidity sensor
See Section 2.6 (Transfer Control Responds to Environmental Changes)
A OHP sensor
This sensor detects the presence or the absence of transparencies.
B Alignment sensor
When color misalignment has been corrected, this sensor reads the alignment pattern printed
at the right and left ends of the transfer belt (see Section 2.13).