SHARP SP2291 Technical Report

COPIER : SF-2216

Date

:

Jun. 26, 1998

1. ACTION TO ALLEVIATE PROBLEMS OF GRINDING OF THE MG ROLLER.

2. ACTION TO IMPROVE THE ADJUSTMENT PERFORMANCE OF THE TONER
DENSITY SENSOR LEVEL.

3. CHANGE CARRIED OUT IN THE PART CODES IN ACCORDANCE WITH A CHANGE IN THE
MAKER, CARRIED OUT AS A MEASURE TO IMPROVE PRODUCTIVITY.

4. CHANGE CARRIED OUT IN THE DIODE OF THE MAIN PWB. (TO IMPROVE PRODUCTIVITY.)

No. : SP-2291

1. Action to alleviate problems of grinding of the MG roller.

1.Model Name: SF-2116/2118/1016/1018/2020/2120/1020/1120

2.General: There have been problems reported of grinding occurring to the flange on the magnetic

roller R side of the developing unit. As a measure to alleviate this problem, a change
has been carried out in the material of the flange on the magnetic roller R side. The new
flange is made of anti-friction aluminum.

3.Action: From the start of 1998 March production.

2. Action to improve the adjustment performance of the toner density sensor level.

1.Model Name: SF-2216/2218/1016/1018/2020/2120/1020/1120

2.General: The level adjustment value of the toner density sensor in the developing unit was too

high, causing problems of deviation due to the developer lots, and occasionally
problems of adjustments being unable to be carried out due to reasons such as having
been left standing for too long a time, etc. As a measure to alleviate these problems, a
change has been carried out and the ATC fine adjustment value is being used.

3.Action: From the start of 1998 March production.

SHARP CORPORATION Reprography Division

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3. Change carried out in the part codes in accordance with a change in the maker,
carried out as a measure to improve productivity.

1.Model Name: SF-2116/2118/1016/1018/2020/2120/1020/1120/2216/111 6

2.General: A change has been carried out in the maker of some of the parts used in the paper

feeding unit. This action has been carried out as a measure to improve productivity.
You are kindly asked to refer to the parts list for details concerning the parts in which
the change described above has been carried out, and the part codes which have been
affected by the change.

3.Action: From the start of 1998 April production.

4. Change carried out in the diode of the main PWB.

1.Model Name: SF-2216/1116

2.General: A change has been carried out in the diode of the main PWB. This action has been

carried out as a measure to improve productivity. The new diodes have the characters
"No. D3" silk screened in one location.

3.Action: Running change from 1997 December production.

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