Spot Generation Module - AGFA Avantra 36/44 Service Manual

Avantra 36/44 Service Manual

2.11 Spot Generation Module

The Spot Generation Module (SGM) is a field replaceable unit that mounts to the car-
riage assembly. Figure 2-7 illustrates the SGM. The SGM produces a focused laser
spot of the proper size, shape and position.
The SGM consists of a base on which the following mount:
• Laser diode module
• Polarizer/sensor
• Spot size changer/sensor
• Spot forming lens
• Weak/focus lens/sensor
• Beam compression motor/sensor
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–Beam compression sensor. –Weak lens motor.
–Spot size changer. –Spot forming lens. –Laser diode mount .
–Polarizer wheel and motor.
The following sections describe each of these submodules in detail.
2-16 Functional Analysis
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Figure 2-7 Spot generation module.
–Polarizer sensor. –Beam compressor motor.
–Focus sensor. –Spot size sensor.
–Aperture wheel motor.
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–SGM base.
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