SHARP DTE100 Technical Report

Date: Nov. 24, 1993

DUPLICATOR : SD-2060

1.PREVENTION OF COPY LIGHTNESS AND COPY STREAKING — IMPROVEMENT IN DEVELOPER
FLOW DUE TO DO CTOR SHAPE ALTERAT IO N.

2.PREVENTION OF DOOR SWITCH MALFUNCTIONING DUE TO HARNESS ENTANGLEMENT.

3.PREVENTION OF DIAGONAL FEEDING FROM THE MIDDLE PAPER FEEDING TRAY.

4.PREVENTION OF 1000 AIR PAPER FEEDING UNIT FEEDING DUCT CRACKING.

5.TRIAC CHANGE FOR MODEL COMPATA BILITY.

No. : DTE-100

1. Prevention of copy lightness and copy streaking — improvement in developer flow
due to doctor shape alteration.

1.General: Prevention of copy lightness and copy streaking.

2.Cause: To improve developer flow. When developer gets clogged between the Doctor and the

MG roller, it is not evenly spread.

3.Description: As shown in the diagram below, the shape of the doctor has been changed, and the
flow of the developer has been stabilized.

Old New

Doctor.

Doctor.

As a temporary measure, ABS plate has been used to hold the screws in a manner
such as to create a shape similar to the new one, implemented from the 1st lot in
mid-June, 1993.

4.Effective time: (Factory action)

From mid-June, 1993.

SHARP CORPORATION Reprography Division

1/5

Green

C

2. Prevention of door switch malfunctioning due to harness entanglement.

1.General: Because the harness clamp on the operation panel side sags and drops during the
door switch movement strokes, the micro-switch gets snagged in the harness, and the
indication “CH” sometimes fails to be given when the door is opened. To remedy this
problem, mylar has been added to prevent the snagging of the harness.

2.Cause: Prevention of door switch malfunctioning caused by snagging of the harness.

3.Description: Mylar has been introduced between the harness and the micro-switch.

Harness clamp.

➁ Door SW Mylar.

(PSHEP3575FCZZ)

Door switch.

This is the harness which has been
snagging with the door switch.

➀

Operation base plate.

Double-sided tape.

The double-sided tape portion of the door
switch mylar ➁ is aligned with the section
of the operation base plate marked by the
shaded area ➀, and attached.

4.Effective time: (Factory action)

From mad August, 1993.

3. Prevention of diagonal feeding from the middle paper feeding tray.

1.General: The copy paper sometimes catches the ribs of the middle feeding tray, and is diagonally
fed during double-sided copy operations.
To remedy this problem, spacers have been introduced between the ribs of the paper
feeding tray. (Problems have been particularly common with WLT paper.)

2.Cause: To prevent diagonal feeding during double-side copying.

2/5