SHARP SP1868 Technical Report

Date: Apr. 3, 1995
COPIER : SF-2014
1. COUNTER MEASURES FOR BLAC K STRE AKING DURING REDUCED COPIES
2. PREVENTION OF DOUBLE FEEDING
3. COUNTER MEASURES FOR BARKE R RO LL ER RETURN M ALF UNCTIONING IN THE PAPER FEEDING UNIT
4. PREVENTION OF SKIPPING (ABNORMAL NOISE) OF THE PS CONNECTION GEAR IN THE FEEDING UNIT
5. PREVENTION OF TRANSFER MISALIGNMENT DURING COPY OPERATIONS
No. : SP-1868
1. Counter measures for black streaking during reduced copies
1.Model name: SF-2014/21 14/2214 Z-800, SN-1420/1430 (USA only)
3.Description:
The rib cuts mentioned above were carried out by hand from the start of mass production to 1994 October production, of the SF-2214, SN-1430 models, which are SPF mounted machines. From 1994 November production, the rib cuts have been carried out on all models in the metal molding stage.
4.Action: From the start of 1994 November production
2. Prevention of double feeding
1.Model name: SF-2014/21 14/2214 Z-800, SN-1420/1430 (USA only)
Rib cuts carried out at these locations.
2.General: When the pressure springs of the separator roller in the bottom frame were attached diagonally to the boss on the base plate side, double feeds were occasionally caused by increases in the pressure of the spring. The changes described below have been carried out to alleviate this problem.
Green
C
SHARP CORPORATION Reprography Division
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3.Description: The diameter of one side of the separator pressure springs has been increased so that it doesnUt move up the boss.
(Old)
±0.2
φ7
Attached: 3 Attached: 3 Attached: 1
NG OK
Moved up the boss
+0.1
4.Action: Running change from 1994 Mid-October production
-0.2
φ7
(New)
0
+0.2
φ7.3
Attached: 3
Attached: 1
3. Counter measures for barker roller return malfunctioning in the paper feeding unit
1.Model name: SF-2014/21 14/2214 Z-800, SN-1420/1430 (USA only)
2.General: To prevent the barker roller in the 250 cassette unit from malfunctioning (the roller sometimes becomes jammed and remains in the lowered position instead of raising back up, in some cases preventing the cassette from being withdrawn), the spring load of roller release arm spring 250 had been changed by altering the shape of the already installed springs, but now the springs are being changed in the metal moulding stage as a permanent measure.
3.Description: Change in spring load by coiling
Change in spring load by coiling
(Permanent measure) Shaped by metal mould, the
(Old spring)
(Temporary measure) Reshaped spring
shape is the same as the temporary springs.
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MSPRC2201FCZZ MSPRC2201FCZ1
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