Headlift Mechanism - Intermec EasyCoder 601 XP Service Manual

8.9 Headlift Mechanism

Sensor Arm
Headlift Sensor
Headlift Arm
Eccenter
Printhead Pressure
Grub Screw
(factory-adjustment)
Intermec EasyCoder 601 XP – Service Manual Ed. 3
Description
The headlift mechanism is an integrated part of the print unit. The
mechanism is activated by the green printhead lift knob at the
outside of the upper part of the print unit. The knob is pressed on a
shaft, which has a disk with an eccentrically fitted pin on the inside
of the upper, outer gable of the print unit. This pin activates a fork-
shaped pressure adjuster, that via a linkage is connected to the
headlift shaft. The pressure adjuster is fitted with a spring and an
adjusting screw. Thus, the operator can easily apply more or less
pressure of the printhead against the pressing roller depending on
media, print method, paper thickness and other circumstances.
The headlift shaft is connected to the headlift sensor arm on the
inside of the print unit (see chapter 8.8). On the headlift shaft, the S-
shaped headlift arm is also fitted. At the tip of the headlift arm is a
magnet that engages the printhead bracket. The arm can be moved
along the headlift shaft, so the pressure can be applied laterally at the
centre of the paper web, even when narrow paper is used. The
hooked fingers of the printhead bracket are hung on the headlift
shaft. The concept allows the printhead to align itself vertically to
the pressing roller, while maintaining a fixed alignment in the other
two dimensions.
Return Spring
Chapter 8
Headlift Shaft
Pressure Adjuster
Print Unit
Linkage
Printhead Lift Knob
63