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B132/B200Double Feed Detection

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Double Feed Detection

The B132/B200 series color MFP’s incorporate a new feature called Double Feed Detection.

It’s purpose is to detect when double feed occurs (more than 1 sheet of paper fed at a time) and to detect if paper type changes in the middle of a job (mixed media).

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Double Feed Detection

If one of these events occur, the job is stopped and a mis-feed is displayed.

It is important to know how to work with this feature to ensure optimum quality output.

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How it works

Just after registration, a pair of sensors measures the translucence of the paper.

If the light is not within the specified range for the paper type selected by the user, the machine stops the job and a paper jam is displayed.

This is because a double-feed has occurred, or a thicker paper than specified is fed.

Sensor

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Why is it important?

The machine makes changes in its operating parameters based onthe type and thickness of paper being fed.

If the correct type and thickness is not specified to the MFP, poorimage quality and poor fusing will occur.

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How to use it

If the paper weight is over 127g/m2 (33lb. bond), or under 71g/m2 (18lb. Bond) then you must go into User Tools and set the tray to the correct paper thickness and type.

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How to set up paper thickness

Once you are in User Tools Choose:

System Settings >

Tray Paper Settings > Next

Paper Thickness Setting

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How to set up paper thickness

Then choose the correct thickness for the paper in the tray.

If this is not done paper mis-feeds WILL occur.

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How to set up paper types

Once you are in User Tools Choose: System Settings >

Tray Paper Settings > NextPaper Type (per tray)

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How to set up paper types

You can now choose what type of paper is in a tray

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Real world applications

Ricoh recommends that this feature be used to ensure the best image quality possible.

However there are times when this feature could cause issues, such as in a walk-up copy area where a lot of people need to use the machine.

In this case these features can be turned off.

Keep in mind, if you disable these features image quality may not be optimum.

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How to disable these features

You need to enter User Tools and choose:System Settings >

Tray Paper Settings > Next > Next > NextPaper Type Detect or Double Feed Detect

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Disabling Paper Type Detection

You can turn this feature On and Off per tray

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Disabling Double Feed Detection

And it is the same for this one.

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Conclusion

As you have seen, you can enable/disable these features per paper tray. The settings made for the internal trays and external LCT are permanent until changed manually,

However, settings made for the By-Pass tray will revert to their defaults if the machine main power is cycled off/on.