Measures against poor image density on the ends of the front and
rear sides of the image
[Symptom/Question]
In the machines prior to the Countermeasure cut-in serial number in factory described below poor image density may occur on
both the ends (the end of the front side [a]/the end of the rear side [b]) of the image or on one side of the image with the width of
approx. 20 to 30 mm.
The samples below show the images with the solid yellow images printed. The photo [A] shows the image with poor density, and
the photo [B] shows the normal image. The arrows show the paper feeding direction.
[Cause]
The filter base [1] inside the exhaust duct unit ozone filter [A] of the sub station is clogged, and poor exhaust inside the machine
occurs.
This causes stains to adhere to the etching grid plate (on the end of the front side and on the end of the rear side) of the primary
corona assembly, and charging failure occurs, resulting in poor image density.
The photos below are examples of yellow, which show the stains [a] on the grid plate of the primary corona assembly.
[Note] There is contamination due to toner stains (they will be removed from the grid plate by blowing or wiping) or white adhering
substances (they look like toner stains; however, they are sticky and will not be removed by blowing or wiping).
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Содержание imagePRESS C10000VPSeries
Страница 1: ...Troubleshooting Guide imagePRESS C10000VPSeries July 16 2019 Canon U S A Inc ...
Страница 28: ...4 If the symptom does not improve then check other factors 23 ...
Страница 42: ...3 Output about 10 test prints to verify the effect 37 ...
Страница 142: ...Model Serial number PAPER DECK UNIT_ F1 A4 WES05369 137 ...
Страница 164: ...4 5 Make some prints and check that the above issue does not occur 159 ...
Страница 173: ...Model Serial No Document Insertion Folding Unit K1 EU O WGK00631 Document Insertion Folding Unit K1 CN WGL01726 168 ...
Страница 179: ...C 2 24VB system C 3 24VC system C 4 24VD system C 5 24VE system 174 ...
Страница 180: ...C 6 24VF system C 7 24VH system C 8 24VI system C 9 24VJ system 175 ...
Страница 181: ...176 ...
Страница 261: ... Service parts CABLE MOTOR CONNECTING FM1 T808 256 ...