SHARP DTE255 Technical Report

Date: Jan. 10, 1997

DUPLICATOR : SD-2060

1.TROUBLE SHOOTING FOLDED CORNERS OF THE A4R/LTR COPY PAPER.

2.MEASURE TO IMPRO VE THE LIFE SPAN OF THE UPPER HEAT ROLLER BEARING.

3.ADDITION OF A VACUUM SHEET.

4.TROUBLE SHOOTING PROBLEMS OF PAPER JAMS AND ABNORMAL NOISE IN THE CENTER TRAY UNIT.

5.TRO UBLE SHOOTING MEASURE TO PREVENT CRACKING OF THE FU LEVER HOLDER.

6.MEASURE TO PREVENT THE PROCE S S HAR NE SS FROM BEING CUT.

No. : DTE-255

1. Trouble shooting folded corners of the A4R/LTR copy paper.

1.Model Name: SD-2060/3062

2.General: Problems sometimes occurred with the corners of the copy papers folding over due to

their becoming caught on the PG assistant plates of the paper guides immediately after
the fusing heat roller when making copies using A4R/LTR copy paper. As a trouble
shooting measure to alleviate this problem the following change was carried out.

3.Description: Improvement measures were carried out by enlarging the discharge flow hole by 1.2
mm in the heat roller side of the PG assistant plate.
Furthermore, because there was a danger of the PG assistant plate coming in contact
with the heat roller when removing the paper guide during this trouble shooting
measure, a change has been carried out in the shape of the rotational axis section of
the paper guide FB so that the paper guide FB will come in contact with the bearing
before the paper guide assistant plate comes in contact with the heat roller.

(Description)
The surface of the rotational axis section of the paper guide FB in the location
indicated by the arrow to the left.

Paper guide FB

Upper heat roller

Lower heat roller

(Reason)
The degree of extension of the paper guide assistant
plate. When attaching the paper guide assistant plate
there is a danger of the paper guide assistant plate
coming in contact with the heat roller, and by building
up the surface area of the paper guide FB the raised
section of the paper guide FB will come in contact with
the heat roller bearing before the heat roller and the
paper guide assistant plate come in contact, thus
preventing the heat roller from becoming damaged.

When replacing the paper guide assistant plate the paper guide FBA should always be
replaced at the same time.

4.Action: From the start of 1996 October production.

SHARP CORPORATION Reprography Division

1/4

Green

C

2. Measure to improve the life span of the upper heat roller bearing.

1.Model Name: SD-2060/3062

2.General: The grease used in the inner surface of the bearing has been changed from one with a

temperature resistance of 150C° to one that is resistant to temperatures of up to 230C° as a
measure to improve the life span of the upper heat roller bearing used in the fusing unit.

The lettering of the stamp on the shield for both
New and Old is as shown below.
(Old) 6008ZL → (New) 6008ZLC4 (added)

3.Action: From the start of 1996 October production.

3. Addition of a vacuum sheet.

1.Model Name: SD-2060/3062

2.General: Some unnecessary holes were added in the rear frame of the models listed above.

These holes have been covered up by the addition of vacuum sheets, in order to
establish interchangeability between the chassis and new models.

Upper side of the rear frame left

3.Action: From the start of 1996 October production.

2/4

Vacuum sheet (added)