Operation; Outline - Develop QC 2235 Plus Service Manual

Write section (PH section)
4.2

Operation

4.2.1

Outline

• Each of the PC Drums is irradiated with LED light and an electrostatic latent image is
thereby formed.
• The LED print head is a fixed scanning type exposure system that includes approx.
7,700 LED chips (600 dpi) arranged in the main scanning direction and a SELFOC lens
array, or SLA that brings rays of light emitted by the LED chips to a focus on the surface
of the PC Drum to form a full-size image.
• The special service jig for cleaning the surface of the LED print head should be used,
since a special coating is applied to the surface of the SLA to prevent ozone from sticking
to it.
Transfer Belt
PC Drum Y
LED/Y
QC 2235plus Theory of Operation Ver.1.0 Feb. 2004
M
Y C
LED/C
LED/M
SELFOC Lens
2-10
2nd Image Transfer Roller
Bk
LED/Bk
4036ma2004c1
Approx. 7,700
LED chips
4036ma2222c0