Canon LBP312 SERIES User Manual page 500

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Do smudges appear on printouts when you use the machine in an
environment with low humidity?
Change the setting for <Sp. Transfer Mode>. Setting this item to <On> may solve the problem.
Sp. Transfer Mode(P. 402)
If you select <On> and use the machine in an environment with high humidity, the print density may
become lighter or uneven.
If the problem persists with <Sp. Transfer Mode> specified, change the setting of <Sp. Transfer Mode 2>.
Setting to <On> may solve the problem.
Sp. Transfer Mode 2(P. 404)
If you select <On> and use the machine in an environment with high humidity, the print density may
become lighter or uneven.
Do streaks appear on printouts depending on the paper type or the operating
environment?
Change the setting for <Special Print Mode A>. The improvement effect is weakest with <Mode 1> and
strongest with <Mode 4>. Try the adjustment starting with <Mode 1>.
Special Print Mode A(P. 402)
This item cannot be set when <Barcode Adj. Mode> is set to one of <Mode 1> to <Mode 4>.
Print density will be lighter when you select stronger improvement. It may also result in less sharp edges
and rougher details.
If you set this item to <Mode 3> or <Mode 4>, the printing speed becomes slower.
Toner Smudges and Splatters Appear
Are you using appropriate paper?
Check usable paper, and replace with appropriate paper.
Paper(P. 558)
Loading Paper(P. 38)
Troubleshooting
494

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