Maxim M190G, Техническое руководство

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1-8 Overview and Operating Principle
1.2.3 Print Mechanism
The print mechanism consists of the print head unit which features 8 solenoids (Print solenoid
A-H) arranged in parallel, Shaft,carriage, Shaft,carriageg guide, Cam trigger assembly, Paper
feeding platen unit.
Figure 1-7 Print Mechanism
Movement of the print head unit
The print head unit is supported by Shaft,carriage guide and Shaft,carriage which are fixed in
parallel alignment with the paper feeding platen unit. As shown in Fig. 1.7, the head oscillating
pin which is caulked to the print head unit engages with the endless cam groove engraved on
the outer circumference of the Cam trigger assembly. When the Cam trigger set rotates in the
direction of the arrow, the head oscillating pin moves along the cam groove causing the head
unit to move in parallel with the paper feeding platen unit.
Print operation of the head
Movement of the print lever when printing 1 dot:
The print head is structured of a Coil,head, Iron core,head, Push bar,head, Plunger,head, and
features 8 solenoids (Print solenoid A-H) arranged in parallel, with the Lever,printing,head and
the Printing,lever spring for each solenoids. Driving the Print solenoids (energizing the
Coil,head) perform printing with the Lever,printing,head.
Spting, carriage
Cam trigger assembly
Shaft, carriage guide
Shaft, carriage
Print head unit
Paper feeding platen unit