SHARP DTE324 Technical Report

DUPLICATOR : SD-4085

Date

:

Oct. 2, 1997

1. MEASURE TO ALLEVIATE PROBLEMS OF COPY IMAGE MISALIGNMENT.

2. MEASURE TO ALLEVIATE PROBLEMS OF BLACK PAPER JAMS IN THE RDH SECTION.

3. PERMANENT MEASURE CARRIED OUT ON THE RDH SIZE GUIDE.

4. CHANGE IN THE SCREWS IN THE RDH UNIT CARRIED OUT AS A MEASURE TO IMPROVE
OPERATIONABILITY.

No. : DTE-324

1. Measure to alleviate problems of copy image misalignment.

1.Model Name: SD-4085

2.General: There have been problems of copy image misalignments sometimes occurring. As a

measure to alleviate this problem, a change has been carried out in the roller diameter
of the transport roller B which is used in the RDH exposure frame unit.

Old New

NROLM1151FCZZ (ø24.4) → NROLM1151FCZ1 (ø24.0)

3.Action: From the 1st lot of 1997 July production.

2. Measure to alleviate problems of black paper jams in the RDH section.

1.Model Name: SD-4085

2.General: There have been problems of jams occurring due to detection misses by the RDH photo

sensor (OPD 12 sensor). The misses were caused by the fact that the RDH photo
sensor was too far from the paper, and the detection misses were especially prone to
occur when using original documents which were very dark or black. As a measure to
alleviate this problem, a change in the distance of the sensor has been carried out.

SHARP CORPORATION Reprography Division

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Green

C

3.Description: The problems of detection misses has been alleviated by the attachment of a washer

between the angle and the photo sensor, resulting in the photo sensor being positioned
closer to the paper. Also, in accordance with the addition of the washer, a change has
been carried out in the screws, and longer ones are now being used. Change in the
length of the screws.

New

Changed the
length of a screw

Added
2mm
washer

Photo sensor

SB2 paper guide on
the inner side

SB2 paper guide on
the outer side

4.Action: From the 1st lot of 1997 July production.

3. Permanent measure carried out on the RDH size guide.

1.Model Name: SD-4085

2.General: Temporary measures had been carried out on various parts relating to the size guide in

the RDH original tray unit as a measure to alleviate problems of lower return misses and
damage to the original documents. Now, however, permanent measures have been
carried out and are hereby reported.

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