SHARP SP2079 Technical Report

Date: Dec. 13, 1996

COPIER (OPTION) : SF-A15/A54

No. : SP-2079

1.MEASURE T O PREVENT W-FEED IN G OF THE ORIGINAL DOC UM ENT.

2.ESTABLISHMENT OF PARTS AS A MEASURE TO PREVENT
PROBLEMS OF CRIMPING OF THE ORIGINAL DOCUMENT.

1. Measure to prevent W-feeding of the original document.

1.Model Name: SF-A15/A16

2.General: The measure described below has been carried out as a measure to improve problems

of W-feeding of the original document.

3.Description: ➀ Separator plate springs have been stacked double for both F and R as a measure to
maintain the overwrap volume between the separator belt and the feeder roller and
stabilize the paper smoothing performance when a problem of W-feeding occurs.

➁ The cushion mylar sheet has been discontinued and the cushion has thus been left

bare as a measure to increase the friction resistance. This change has been carried
out as a measure to prevent W-feeding of the last two pages of the original document.
(Note : As a market action for machines which were produced before 1996 October ,
it is possible to avoid problems by attaching a cushion on top of the cushion mylar
sheet which is currently installed.)

4

Transport section - 3

Cushion mylar sheet
➁ Only the cushion has been changed.

Separator plate spring
➀ Two separator plate springs have been

stacked one on the other for both F and R.

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

From 1996 mid-October production.

SHARP CORPORATION Reprography Division

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Green

C

2. Establishment of parts as a measure to prevent problems of crimping of the original
document.

1.Model Name: SF-A54/A55

2.General: Crimping of the original document, which sometimes occurs during operations using the

ADF, can affect the copy image. As a measure to alleviate this problem, the following
parts have been established.

3.Description: Added parts

Model type

No. Part name Part code Q’ty

➀ Retainer holder F 0CW2158P054B/ 1
➁ Retainer holder R 0CW2158P055B/ 1
➂ Retainer roller stay N 0CW2158P171E/ 2
➃ Retainer plate plate spring 0CW2176P152A/ 1
➄ Retainer bearing spring 0CW2198P106A/ 2
➅ Retainer bearing 0CW2158P035A/ 2
➆ DF Spacer 0CW2158P034A/ 1
➇ M3 x 6 IT screw 0CW030060FZIT 4
➈ M3 x 6 Tap tight 0CW030060FZTP 2
➉ M3 x 4 IT screw 0CW030040FZIT 2

A54

Series

A55

Series

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Parts marked with a “ ” are effective from the start of mass production.

[Sequence for installing original document retainer parts]

1. Detach and remove old parts.

1) Turn the power supply of the copy machine OFF.

2) Open the ADF. Detach the retainer roller stay assembly by removing the two screws

attaching it (two locations, one on each of the left and right sides). Remove the belt
retainer roller holder (F side) and belt roller holder (R side) ∗2 which secure the front
and rear sides of the D belt retainer roller ∗3, and remove the D belt retainer roller.
(Note: The screws which were removed will be used later, and should therefore not
be lost.

(∗2, and ∗3 are for model SF-A54 only.)

(Figure - 1)