Brother MFC5490CN - Height Adjustment of the Head;Carriage Unit

3-39
Confidential
Height adjustment of the head/carriage unit
For optimal image printing, a pair of slider cams mounted on the head/carriage unit switches the
height of the head/carriage unit against the CR guide rail and support chassis between two
levels--2.3 mm (for thick paper and envelops) and 1.6 mm (for other types of paper) in order to
bring the optimum distance between the head nozzle surface and paper.
The slider cams can be switched by hitting against the stoppers at the right and left ends of the
CR guide rail and CR support chassis.
For "thick paper and envelopes" and "other types of paper":
The machine adjusts the distance from the platen to the head/carriage unit to 2.3 mm for "thick
paper and envelopes" and 1.6 mm for "other types of paper" in order to keep the distance ("a")
constant.
For "thick paper and envelopes"
For "other types of paper"
(Paper other than thick paper and envelopes)
CR guide rail
Slider cam
Head/carriage unit
Slider cam
CR support chassis
(3_23_BHL9)
Head nozzle surface
Paper
Platen
"a"
(3_23_1b)
Head nozzle surface
Paper
Platen
"a"
(3_23_1a)
(3_24_2)
(3_24_1)