My Epson Artisan 837 printer will not print. Error says paper jam, however, no paper jam. Sounds like it is starting to pick up paper but does not do so. Also will not print photos.

SOURCE: Epson Paper Jam Error

Discover the rest procedure for your particular printer
Usually involved switching off- then holding down a couple of button whilst you switch on
for example Service and stop.
Try www.fixyourownprinter.com for more info
or
www. stevesdigicams.com/forums

SOURCE: Epson Stylus CX8400 Paper Jam Error

I have the same exact problem of paper half torn removed but I can not see the other half anywhere. The printer has hardly worked for at the most six pages and now showing paper jam error. How do I fix it?

SOURCE: epson C48 inkjet printer flashing lights

I can tell you how to fix this if anyone is interested - report back if so.

SOURCE: Epson Stylus Photo R350 giving a paper jam error message

An Epson service man (he was VERY kind to suggest this) told me to use a weak detergent solution on the rollers, NOT alcohol as that will dry out the material the rollers are made of. Although the problem has recurred a couple of times, it's worth repeating when necessary. I actually activate the 'print' command so it tries to feed in paper, while I FIRMLY hold a piece of fine cotton cloth stretched over a thin plastic ruler, which I hold down where the paper feed grabs its paper. The printer has a couple of tries to feed paper, reports an error message (because there was no paper) and I activate it again, thus exposing the WHOLE of the feed wheel to the cleansing cloth! WORTH A TRY!

SOURCE: horizontal blue lines when printing

Change the blue ink cartridge.