SHARP SP1954 Technical Report

Date: Nov. 10, 1995

COPIER : SF-2050

1. MEASURES TO IMPROVE THE PERFORMANCE OF THE SEPARATOR PAWL OF THE PAPER EXIT
REVERSING UNIT.

2. IMPROVEMENT OF THE PERFORMANCE OF THE MAIN MOTOR BY INCREASING THE LOAD OF
THE DRIVE LINE.

3. MEASURES TO PREVENT ABNORMAL NOISE FROM THE PAPER DUST REMOVAL ROLLER.

4. MEASURES TO PREVENT JAMS IN THE CURL CORRECTION UNIT.

No. : SP-1954

1. Measures to improve the performance of the separator pawl of the paper
exit reversing unit.

1.Model name: SF-2050.

2.General: A mylar and a sheet have been added to improve the paper flow performance in the

paper exit reversing unit.
Furthermore, the distinction of the upper paper delivery roller (P/G -1) which

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previously had been divided into Japanese domestic use and Overseas use has been
simultaneously changed with the changed described above. The distinction of the upper
paper delivery roller is now divided into the AB line and the Inch line.

AB series

Paper delivery roller B9J (NROLP0937FCZ1)
Color:Black Q’ty: 3

Drop sheet Drop sheet

Standard Standard

1

±0.5

Standard Standard

Drop sheet

±0.5±0.5

1

StandardStandard

±0.5

StandardStandard

SHARP CORPORATION Reprography Division

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Green

C

Inch series

Upper paper delivery roller (NROLP0923FCZZ)
Color:White Q’ty: 3

Drop mylar

3.Action: From the start of 1995 April production.

Standard

±0.5

Standard

±0.5

Standard

Standard

Drop mylar

2. Improvement of the performance of the main motor by increasing the load of
the drive line.

1.Model name: SF-2050.

2.General: There is a possibility of damage occurring to the IC in the main motor, caused by an

increase in the load of the drive line. To alleviate this problem, the prevention measure
described below has been carried out.

3.Description: The shape of the radiant heat plate of the main motor PWB has been changed.
Note: The change described above has been carried out from 1995 mid-September
production, but a temporary measure was carried out from the start of mass production,
which consisted of changing the shape of the radiant heat plate of the main motor PWB
in a later process.

4.Action: From 1995 mid-September production.

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