| + | [* black] Problems with the Intermediate Transfer Belt tend to cause intermittent quality problems because these printers have multiple independent ways of removing toner. The wiper blade built into the Intermediate Transfer Belt is only one of several cleaning steps. |
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| + | [* black] These intermittent problems are usually related more to the recent printing history rather than the current printing task, making diagnosis more difficult. |
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| + | [* black] At a school that prints 200,000 pages a year on these printers, typically 5% to 20% of compatible toner cartridges cause quality problems. The cause of these faults is readily proved by swapping cartridges. |
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| + | [* black] For the small minority of quality problems that persist across multiple toner cartridges, the only other cause of quality problems observed across 1,000,000 pages printed has been associated with Intermediate Transfer belts. |
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| + | [* black] This guide has an unusually informal style because the author has rebuilt only three of these belts. The guide is being published anyway because nothing better has yet been published. |
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| + | [* black] Other guides talk only about manually cleaning the belt which, although easy to do, provides only a short term benefit if the underlying cause is that the wiper blade is not cleaning the belt. |
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| + | [* black] Because manually cleaning the belt is easy and low risk, it is worth cleaning the belt a few times before deciding to embark on the much more complicated repair described in this guide. |
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