Feed Tray – where the film to be processed is inserted into the automatic processor in the darkroom.
Entrance Rollers –grip the film to begin its trip though the processor.
Microswitch – is engaged to control the replenishment rate of the processing chemicals.

3 Principal Subsystems
• Roller
• Transport Racks
• Drive Motor
Rollers Subassembly
Types of Rollers
1.) Transport Roller – diameter of 1 in.
- Covey the [...]