Flatbed Initialization Movement - Riso RZ3xx Series Technical Manual

2. Flatbed Initialization Movement

Initialization is performed in the following situations to bring the flatbed unit to the home position.
- When the machine power is switched on.
- When recovering from the sleeping mode (wake-up).
Initialization operation
(1) When either one of the above two conditions is activated, if the FB/AF HP sensor is detecting the image
scanner carriage, the FB read pulse motor rotates in the scanning direction to move the lamp carriage
out of the sensor detection. Once the carriage escapes from the sensor detection, the FB read pulse
motor rotates in the return direction until the sensor detects the carriage again and keeps on moving
until the carriage moves 8mm further from the first detected position and stops. This is called the home
position, and at the home position the sensor is still detecting the carriage.
(2) If the image scanner carriage was not detected when either one of above two conditions is activated,
the FB read pulse motor rotates in the reverse direction to move the carriage back 8mm and stops. If
the HP sensor detects the carriage during this movement, the initialization movement explained in the
above paragraph (1) takes pace. But if the carriage was not detected during the 8mm reverse movement,
the pulse motor rotates in the forward direction to move the carriage 8mm in the scanning direction.
Then the pulse motor rotates in the reverse direction to bring the carriage back until the HP sensor
detects the carriage and stops after the carriage moves 8mm from the detected position (home position).
(3) In the case the machine power switch is turned ON and after the initialization movement is made, both
the gain and AD reference adjustments are performed. Then, the initialization movement explained by
above paragraph (2) is made.
RISO Inc. Technical Communications
CHAPTER 12: FB ORIGINAL SCANNING SECTION (300dpi)
FB/AF HP sensor
Image scanner carriage
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FB read pulse motor
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