SHARP DTE302 Technical Report

DUPLICATOR : SD-4085

Date

:

Jun. 18, 1997

1. MEASURE TO ALLEVIATE PROBLEMS OF IMAGE MISALIGNMENT AND TEARING OF THE GLASS
MYLAR IN THE RDH.

2. MEASURE TO ALLEVIATE PROBLEMS OF CRACKING OF THE COATING OF THE UPPER HEAT ROLLER.

3. MEASURE TO PREVENT PROBLEMS OF DISLOCATION OF THE ORIGINAL DOCUMENT SIZE RACK IN
THE RDH.

4. CHANGE IN THE VERSION OF THE MAIN ROM AND THE RDH ROM, AND CHANGE IN THE PART
CODES.

No. : DTE-302

1. Measure to alleviate problems of image misalignment and tearing of the glass mylar
in the RDH.

1.Model Name: SD-4085

2.General: The changes described below have been carried out as a measure to alleviate problems

of image misalignment in the RDH and problems of cracking of the RDH glass mylar.

3.Description: <1>A change in the shape of the No. 1 exposure roller has been carried out: (cuts have

been carried out on both ends; a change in the size of the diameter has been carried
out: ø 36.2 has been changed to ø 36.)
<2>A change in the shape of the No. 2 exposure roller has been carried out: (cuts have
been carried out on both ends.)
<3>The addition of an exposure pressure roller has been carried out: (the added
exposure pressure roller is to be used in place of the cuts carried out on both ends
described in <1> and <2> above.)
<4>A change in the shape of the No. 1 register roller has been carried out: (a change in
the size of the diameter has been carried out: ø 23.7 has been changed to ø 24.)
<5>A change has been carried out in the driven roller of the No. 1 register: (the shaft
revolving type has been changed to a bearing revolving type.)
<6>The RDH glass mylar has been discontinued.

Actions <1>, <2>, <4>, and <5> have been carried out as a measure to alleviate
problems of image misalignment.
Actions <1>, <2>, <3>, and <6> have been carried out as a measure to alleviate
problems of tearing of the glass mylar.

4.Action: From the start of 1997 April production.

SHARP CORPORATION Reprography Division

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2. Measure to alleviate problems of cracking of the coating of the upper heat roller.

1.Model Name: SD-4085

2.General: There were some problems reported from the markets of cracking of the coating on the

surface of the upper heat rollers. As a measure to alleviate this problem a change has
been carried out in the maker. In accordance with this change a change has also been
carried out in the part code.

3.Action: From the start of 1997 April production.

3. Measure to prevent problems of dislocation of the original document size rack in the
RDH.

1.Model Name: SD-4085

2.General: The addition of a plastic block was used to apply pressure was carried out as a

temporary measure to prevent the original size rack (P/G [48]-14) in the RDH original
document tray unit from becoming disengaged from the original document spring (P/G
[18]-10) when it moved during operations. As a permanent measure to alleviate this
problem, however, the addition of a hooked section to the plastic block of the original
document tray base (P/G [48]-9) has been carried out.

3.Action: Running change from 1997 May production.

4. Change in the version of the main ROM and the RDH ROM, and change in the part
codes.

1.Model Name: SD-4085

2.General: An upgrade of the ROM in the main PWB and in the RDH PWB had been carried out

without carrying out a change in the part codes, but in order to establish a means for
distinguishing between the machines in stock in the markets and the machines with the
new ROM version upgrades, a change has been carried out in the part codes of the new
ROM versions, and are hereby reported.

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