Question about Lexmark T640 Laser Printer
The printer will print labels perfectly when using a brand new sheet but will not feed the label sheet through (I get a paper jam error even though it technically is not jammed) once it has been fed through once. I have never had this problem before and Lexmark support has absolutely no clue. They insist it is a general paper feeding issue - it is only an issue when I'm trying to print on used label sheets (it feeds regular paper through repeatedly just fine). Not to be repetitive - just trying to be clear. Thank you!
Try changing feed rollers. For a quick fix, remove the rubber rollers and flip them inside out. It should work
Posted on Feb 15, 2009
Don't put used label sheets through a laser printer. Just because you had it working like that doesn't mean it's a good idea. We've had many laser printers in our shop here where the owners did that and eventually the edge of one of the removed label areas will get stuck on something (usually the fixing unit) and completely ruin the fixing unit requiring it to be replaced. Only use "Laser Printer Labels" and never use used sheets.
Posted on Sep 24, 2012
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Posted on Jan 02, 2017
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This printer has capability to print on labels. Here are some tips when printing on labels:
· Use labels designed specifically for laser printers. Check with the manufacturer or vendor to verify that the labels can withstand temperatures up to 210°C (410°F) without sealing, excessive curling, wrinkling, or releasing hazardous emissions.
· Labels can be printed at a higher fusing temperature up to 220°C (428°F) if Label Weight is set to Heavy.
· Select this setting using the Embedded Web Server, or from the printer control panel Paper menu. Label adhesives, face sheet (printable stock), and topcoats can withstand up to 25-psi (172-kPa) pressure without delaminating, oozing around the edges, or releasing hazardous fumes.
· Do not use labels with slick backing material.
· Use full label sheets. Partial sheets may cause labels to peel off during printing, resulting in a jam. Partial sheets also contaminate the printer and the cartridge with adhesive, and could void the printer and cartridge warranties.
· Do not use labels with exposed adhesive.
· Do not print within 1 mm (0.04 in.) of the edge of the label, of the perforations, or between die-cuts of the label.
· Be sure adhesive backing does not reach to the sheet edge. Zone coating of the adhesive at least 1 mm (0.04 in.) away from edges is recommended. Adhesive material contaminates the printer and could void the warranty.
· If zone coating of the adhesive is not possible, remove a 2-mm (0.06-in.) strip on the leading and driver edge, and use a non-oozing adhesive.
· Portrait orientation works best, especially when printing bar codes.
· Use only paper label sheets. Vinyl, pharmacy, and dual-sided labels are not supported.
For further assistance, please contact Lexmark Technical Support.
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