SHARP SP1920 Technical Report

Date: Aug. 25, 1995

COPIER : SF-2014

1. REGARDING THE PRESSURE WELDING OF THE DEVELOPER UNIT.

2. PREVENTING T HE INTERNAL BEARING OF THE MAIN DRIVE UNIT FROM
COMING OUT OF POSITIO N.

3. REGARDING CHANGES TO THE S HAPE OF THE PULLEY IN THE OPTICAL UNIT.

No. : SP-1920

1. Regarding the pressure welding of the developer unit.

1.Model Name: SF-2014/21 14/2214
Z-800, SN-1420/1430 (USA only)

2.General: There is a spacer (attached to the SP-1867) attached to the developer unit’s DV
separation PWB. During loading for transport, however, the pressure weld stopper may
change shape anyway. To prevent this problem, the changes listed below have been
made. (Normal use should not cause this problem to occur.)

3.Description: We will be improving the shape of the spacer by making it thicker.

DV continuity plate N
( LPLTM4739FCZZ )

TH spacer

4.Action: ∗ Production in Japan: From the middle of January , 1995 production on.
Production in France (SMF): From the middle of February , 1995 production on.
Production in China (SOCC): From the first unit of March, 1995 production on.

2. Preventing the internal bearing of the main drive unit from coming out of position.

1.Model Name: SF-2014/21 14/2214
Z-800, SN-1420/1430 (USA only)

2.General: As a result of the vibrations which occur during transport, the bearing which supports
the main driver unit’s transport clutch may drop out of place.

Green

C

SHARP CORPORATION Reprography Division

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3.Description: In order to prevent this problem, we are making the bearing longer.

4.5 7

4.Action: ∗ Production in Japan: Both bearings - From the first unit of July, 1995 production on.
Production in China (SOCC): For the main frame bearing - From the middle of June,

1995 production on.
For both bearings: From the first unit of July, 1995 production on.
Production in France (SFM): For the main frame bearing - From the middle of July, 1995

production on.
For both bearings: From the first unit of August, 1995 production on.

3. Regarding changes to the shape of the pulley in the optical unit.

1.Model Name: SF-2014/21 14/2214
Z-800, SN-1420/1430 (USA only)

2.General: In order to improve quality, we are changing the shape of the optical unit’s winding
pulley, and discontinuing the pulley flange.

Before the change

Winding pulley flange

Contact weld

After the change

As a result of the changes to the winding pulley, the flange will become part of the main
body of the unit.

3.Action: * Production in Japan: From the first unit of September, 1995 production on.
Production in China (SOCC): From the first unit of July, 1995 production on.
Production in France (SFM): From the first unit of November, 1995 production on.

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