Question about Office Equipment & Supplies
Lexmark T640 thumping noise in exit area when feeding envelopes or transparencies from manual feed, no problem with bond,or plain paper, no image problem on envelope when noise is made.
Lexmark says that this is a feature called Envelope Enhance. Two rollers 'thump' to remove air pockets in the envelopes to prevent creasing and wrinkling. The "feature" can be turned off in the Paper Menu.
Posted on Jul 01, 2008
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Posted on Jan 02, 2017
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