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is there any way to stop autogradation adjustment intermittently coming in 3100 automatically.
why would uu in a hurry to go somewhere ?????????????
Image Stabilization Control
the machine executes image stabilization control only when the surface temperature of the fixing roller is less than 50 deg C.
-However, it executes development gradation density correction control if any of the following conditions exist when the surface temperature of the fixing roller is 50 deg C or more:
- there has been a significant change in the environment since the execution of the previous development gradation correction control.
- the cumulative number of copies has reached 200 if full color or 1000 if mono color.
- when the cover is opened/closed, toner cartridge is replaced, or return is made from a jam state, the machine executes image stabilization control if the surface temperature of the fixing roller is less than 50 deg C at the time.
- the machine takes about 127 sec to complete the execution.
ATR Control
The machine executes ATR control to keep the density (ratio of toner/carrier) inside the developing unit to a specific level, which otherwise would change over time. <Particulars of Control>
The machine is not equipped with a means (sensor) of directly measuring the level of toner inside the developing unit. In its place, the machine forecasts the consumption of toner with reference to video count data to make up for the consumption of toner.
-The toner supply amount computed from the video
count data is corrected at such times as programmed: the machine uses the difference in potential between the primary charging bias and the developing bias to form a patch density on the photosensitive drum. It reads the density of the patch using the patch image read sensor, and compares the result against the density target value to increase or decrease the toner supply amount.
-If the density of the patch image changes because of changes in the developer characteristics, the machine will not be able to keep the density of the developer inside the developing unit to a specific level, which would cause the toner to move astray inside the machine or carrier to stick to the drum.
-To prevent such a problem, the machine corrects the density target value at such times as programmed, thereby keeping the density of developer inside the developing unit to a specific level.
-In the case of Y, M, or C, the machine uses the density of the developer measured by the ATR sensor; in the case of Bk, on the other and, the machine corrects the density target value based on the reading of the counter designed for the developing unit (Bk; i.e., how may sheets have moved past it).
**Knowledge is time consuming, exhausting and costly for a trained Tech.**
Just to add If the patch sensor is dirty the machine will perform auto gradation checks much more often this will also shorten the life of your drum. Also if your drum is @ 100% this will also cause the machine to perform auto gradations more often
When the drum life is 80% or more it is advisible replacing the drum, to avoid Error 020 and E 026 and it is very important cleanning patch sensor P-dens-P always have to be about 500 and SGNL Y about 500 too, if sgnl y is nearly 800 you have to try lo lower the level doing 20 or more yellow copies......
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