Operational Descriptions; Outline Of Operation - Sharp AR-5012 Service Manual

[7] OPERATIONAL DESCRIPTIONS

1. Outline of operation

The outline of operation is described referring to the basic configuration.
(Basic configuration)
Operation
section
Printer section
(Outline of copy operation)
Setting conditions
1) Set copy conditions such as the copy quantity and the copy density
with the operation section, and press the COPY button. The
information on copy conditions is sent to the MCU.
Image scanning
2) When the COPY button is pressed, the scanner section starts
scanning of images.
The light from the copy lamp is reflected by the document and
passed through the lens to the CCD.
Photo signal/Electric signal conversion
3) The image is converted into electrical signals by the CCD circuit
and passed to the MCU.
Image process
4) The document image signal sent from the CCD circuit is processed
under the revised conditions and sent to the LSU (laser unit) as
print data.
Electric signal/Photo signal (laser beam) conversion
5) The LSU emits laser beams according to the print data.
(Electrical signals are converted into photo signals.)
6) The laser beams are radiated through the polygon mirror and
various lenses to the OPC drum.
Scanner section
CCD
MCU (Main control/image process section)
LSU (Laser unit)
Laser diode, Polygon mirror lens
Laser beam
Paper exit
Process section
Cassette paper
feed section
Printing
7) Electrostatic latent images are formed on the OPC drum according
8) Meanwhile the paper is fed to the image transfer section in
9) After the transfer of toner images onto the paper, the toner images
AR-5012 OPERATIONAL DESCRIPTIONS 7 - 1
Fusing section
Paper transport section
Manual paper
feed section
to the laser beams, and the latent images are developed to be
visible images(toner images).
synchronization with the image lead edge.
are fused to the paper by the fusing section. The copied paper is
discharged onto the exit tray.