Cartridge engaging assembly with rack drive thumb actuator system

摘要

A cartridge engaging assembly may include a frame having a cartridge access end. A thumb assembly for engaging and disengaging a cartridge is slidably mounted to the frame so that the thumb assembly is capable of moving toward and away from the cartridge access end of the frame. A rack and pinion drive assembly is operatively associated with the thumb assembly and moves the thumb assembly toward and away from the cartridge access end of the frame.