SHARP sp2234 Technical Report
Date :Jan. 7, 1998
Copier SF-2050
1.Model Name:
No. :SP-2234
1. Countermeasure against shrinkage during copying on
both sides
2. Change of shape of paper discharge cabinet installing
plate due to addition of fan
3. Increase of draw-in performance margin of 500 tray paper supply unit
1. Countermeasure against shrinkage during copying on both sides
SF-2050 /2052 / 2150
2.General:
3.Description:
4.Action:
If the paper in the ADU unit is largely curled downward during copying on both sides, the
paper resupplied from ADU comes into contact with the sensor in front of PS roller. Since
the head of the paper is sometimes damaged to cause shrinkage because of the
resistance of the actuator, the following countermeasure is taken.
The damage of the paper is reduced by weakening the actuator spring of the sensor
(P/G 24 -13).
Sensor
Before change QSW-Z0492FCZZ (Spring, gold color, thicker wire diameter)
After change QSW-Z0157FCZZ (Spring, silver color, thinner wire diameter)
SF-2050 : First product of October, 1997
SF-2052 / 2150 : First mass production
SHARP CORPORATION Reprography Division
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Green
C
2. Change of shape of paper discharge cabinet installing plate due to addition of fan
1.Model Name:
2.General:
3.Action:
1.Model Name:
2.General:
SF-2050 / 2052 / 2150
As the countermeasure against double feed in ADU of SD-2052/SF-2052, the fan has
been added since 1st mass production but the shape of the paper discharge cabinet
installing plate is changed along with addition of the fan.
SF-2050 : Production of November, 1997 (running change)
SF-2052 / 2150 : First produced product
3. Increase of draw-in performance margin of 500 tray paper supply unit
SF-2050 / 2052 / 2150
In order to improve the draw-in performance of the 500 tray paper supply unit, the material
of the pick-up roller is changed.
Here, the part code of the 500 tray paper supply unit is changed along with the above
3.Action:
change.
Discrimination of new and old pick-up rollers
Before change Color of roller : Black
After change Color of roller : Green
SF-2050 : First product of September, 1997
SF-2052 / 2150 : First mass production
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