Image Stabilization System - Minolta EP5000 General, Mechanical/Electrical

Interleaf EP5000/EP4000 GENERAL, MECHANICAL/ELECTRICAL
97.04.01
1149SBM0700A
7

IMAGE STABILIZATION SYSTEM

z The following image stabilization controls are provided to ensure stabilized copy
image.
Item Quality
Initial Setting Image density,
gradation
Regular correction Image density
Gradation
background
Correction made Image density,
immediately after gradation
Power Switch is
turned ON
Correction for Image density,
Faulty AIDC gradation
Sensor
z The following is the block diagram of the image stabilization system.
Exposure
Original Width Scale
Lamp LA1
Image Erase
Lamp LA3
Purpose
To make initial settings of
grid voltage (Vg), optimum
Exposure Lamp voltage, and
AE Sensor gain.
To compensate for any drop
in image density due to a
deteriorating PC Drum.
To compensate for any drop
in the intensity of LA1 light
due to a contaminated
optical system.
Foggy To keep a given
toner-to-carrier ratio of the
developer in the Developer
Mixing Chamber.
To compensate for any drop
in PC Drum surface potential
when the copier is cool
immediately after the Power
switch is turned ON.
To compensate for image
density and gradation
aggravated by a faulty AIDC
Sensor.
Original Glass
Halftone Patch
EE
Toner
Replenishing
HV1
AIDC
M-11
Control
Sets the initial values for grid
voltage correction, optimum
Exposure Lamp voltage
correction, and AE Sensor
gain adjustment.
Corrects the grid voltage
through AIDC Sensor
control.
Corrects the optimum
Exposure Lamp voltage
through AIDC control.
Provides toner replenishing
control by means of the
ATDC Sensor. (For details,
see 13. DEVELOPMENT.)
Corrects the grid voltage and
optimum Exposure Lamp
voltage through AIDC
Sensor control.
Corrects the grid voltage and
optimum Exposure Lamp
voltage according to the time
through which the PC Drum
has turned and the copier
has run.
PU2
PWB-A
CPU
ATDC
1136M003AA