Hp COLOR LASERJET 2800 Explanation of Toner Stir Cycles

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18-Sep-2007

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HP Color LaserJet 2800 All-in-One series
Explanation of Toner Stir Cycles

Document Summary

• The toner stir cycle frequency can be adjusted by sending special commands to the product.

Table of Content

Introduction......................................................................................................................................... 2

Changing the stir frequency .................................................................................................................. 2

For more information............................................................................................................................ 2

Applicable products............................................................................................................................. 2

Product models ................................................................................................................................2

Product numbers .............................................................................................................................. 2

Introduction

At six hour intervals, determined by printer engine firmware, the cartridge carousel will rotate,
activate the cartridge drive motors, and stir the toner. During this process, the control panel display
with show “initializing” The process cannot be stopped by changing a printer setting or interrupted
with the Cancel button.

The process takes about 15 to 20 seconds. Upon completion, the printer waits for the next cycle
based on last stir cycle, last print job processed, or time from power-on.

Changing the stir frequency

The stir cycles frequency can be adjusted between two settings: one stir cycle every six hours, or one
stir cycle every twenty-four hours.

To adjust the stir cycle frequency:

1. Use the EWS or Toolbox to access the System tab.

2. Choose Print Quality.

3. Observe the Optimize section. A 24 hour rotation ON/OFF selection is available.

o If the 24 hour setting is Off, the printer stir cycle will occur after sitting idle for

approximately 6 hours.

o If the 24 hour setting is On, the time between stir cycles will increase to

approximately 24 hours from the last stir cycle or the last printer use.

There is no way to completely eliminate the rotations.

For more information

For additional information about this product

http://www.hp.com/go/support

To contact Hewlett-Packard

http://www.hp.com/go/contacthp

Applicable products

Product models

HP Color LaserJet 2820 All-in-One, HP Color LaserJet 2840 All-in-One

Product numbers

Q3948A, Q3950A

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September 2007