What is the heaviest weight paper the hp 6100 all-in-one will run

I suggest that you go into the Configuration printing menu on the printer and change the paper/media type settings to heavy & press the green enter button. You may have to try a few other different settings if this does not work.

Are you using original HP toners or 3rd party (refills)? We have had issues with some 3rd party toners not bonding properly on heavier media. How heavy a cardstock are you trying to print on? If it is heavier than the highest rated paper for this printer then it may not bond at all, regardless of toner used. The heaviest paper that HP rates for this printer is 43 lb/bond. A lot of cardstock starts at around 65 lb/bond.

Usually you can print up to about 60lb paper. You may be able to go as high as 90-110 (card stock) if the paper print path is straight thorugh. If you printer has a rear paper door then you can try heavier paper. Usually 40-60 is safe for printer without a rear door/heavy paper path.

The problem is that the heavier paper cannot bend around the rollers inside. So if it is setup to allow heavy paper it runs through flat and out the back instead of curling around and out the top as normal.

Actually, if printer is new, printer can feed up to 350 grm. But if pick up rubber at paper feeder mechanics had distort/loose thickness, it can't. Try to use 210 gsm glossy paper. Or, if you wish to use 280 gsm, pull down paper while printer grab paper.

Verify that only recommended paper is being used for printing. The recommended paper types and weights for most HP printers include:
Plain paper, 20 to 24 lb (75 to 90 gsm)
Legal size paper, 20 to 24 lb (75 to 90 gsm)
Card stock, up to a maximum of 110 lb (200 gsm)
Envelopes, 20 to 24 lb (75 to 90 gsm)
Photo paper, 145 lb (236 gsm)
Supported paper weights and types vary by product. Check the Specifications sheet for your product for more information.

This printer isn't designed to take heavy paper, only office standard, and slightly heavier for smarter documents / photos. Best idea would be to print one on smart bright white paper (or desired colour), and take it to a copy shop where they can print onto card. The problem is that the thin paper will easily roll round the rollers at the back, however the thicker paper can't, and therefore jams with the rollers tickling the end of it.

Good luck, and congrats on wedding :)

Don't know if this will help but. I had a HP printer that would not feed the really heavy weight photo paper, I just backed down a couple weights and it worked fine...

don't try to put heavy weight paper like 230 gsm in hp 915, it's not a photo printer (MFP), use upto 170-180 gsm only for gears safety, for heavy weight media try another photosmart series printer.

yes me too, why?

HP recommends papers with ratings of at least 90 for brightness and 75 g/m2 (20 pound) weight. before u proceed....remove the rear access door to reveal the rollers.Take a slightly wet cotton cloth and wipe the rollers in the upward direction 4 times.Close the rear access door. now do as said - START -PRINTERS & FAXES -CHOOSE THE PRINTER ICON THAT HAS BEEN HIGHLIGHTED WITH A CORRECT MARK. - RIGHT CLICK - PRINTING PREFERANCES - PAPER/QUALITY TAB - CUSTOM -Create a new custom paper size that is dependable on the paper you are using - type a name & SAVE -ok -ok -try printing if the problem still insists the report back and do mention which tool you are using for the printout. if its heavy pearlized paper then i do not think th eprinter would accept it . it maintains its own standard weight to detect the paper.