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Table Of Contents  CertiGuide to A+ (Core Hardware)
 9  Chapter 1100:  Troubleshooting

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XIX  Operator Error
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XXI  Drivers
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XX  Environment

Related to operator error is not observing environmental conditions. Environmental conditions play a huge part in printing. Ever wonder why some days print jobs go fine, and other days a sheet fed printer will take three sheets at a time? Anyone who has worked in a printing shop for more than two weeks will tell you it’s all about humidity. Quoting www.photocopiers.com.

Other Influences Regarding Paper Jamming: "One of the most common causes of paper jamming, other than poor quality paper, is humidity. Humidity disrupts the integrity of the paper, reduces its strength, and strongly inhibits copy quality. Paper can be ruined in as little as two hours if the copier is not located in a climate controlled office or if you live in such a place as the Pacific Northwest where rain and humidity are commonplace."

Before you say lasers are not copiers, well, it really doesn't matter whether the Organic Photo Conducting (OPC) drum is written to by a laser or by high-intensity light. The operations of an analog copier and a laser printer are almost identical.

Light Sensitive Drum

The Organic Photo Conducting drum is sensitive to light. When not installed they should be stored in a cool dark place to prevent breakdown of the OPC.


[spacer]How Much Humidity? How Little?

The PC environment is at odds with itself. High humidity destroys paper, as you just saw. And low humidity strongly increases the odds of Electro Static Discharge (ESD), one of our three demons, static. What is the ‘ideal’ range for relative humidity? The vague answer is somewhere around 40%. Going down to 20% greatly increases ESD to the point where air movement over surfaces creates static! Going up above 50% has paper reducing itself back to its former state of pulp. As usual, the answer involves tradeoffs and the exact percentage range can and will vary from one place to the next.



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XIX  Operator Error
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XXI  Drivers
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