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Service Guide ML172/ML182 Series
Chapter 2 Principles of Operation
2.2.2 Head Gap Adjusting Mechanism
The head-gap adjusting mechanism adjusts the gap between the platen and printhead by changing the tilt
angle of the carriage frame. This is accomplished by using the adjusting lever.
When the adjusting lever is operated, the adjusting screw, which is interlocked with the lever via a gear,
rotates and changes the position of the carriage frame around the carriage shaft. The printhead, mounted
vertically on the carriage frame, moves closer to or farther away from the platen with the change in the
carriage frame tilt angle.
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