Ir 33o double side printing problem

Manoj, Try using compressed air to blow dust and debris out of printer. Check the attached links,instruction and guides, Good luck
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How to fix paper jam Canon iR3300 printer
Home Canon Italia
https://www.usa.canon.com/internet/portal/us/home/support/details/copiers-mfps-fax-machines/support-multifunction/imagerunner-3300

Open te copier and remove the paper jam. is what the manual says.

Normally the DOUBLE SIDED printing command in located in the section where you select the paper size, type of paper, etc. It usually is under the TAB labeled PROPERTIES

True multi-functionality means you get more for your money in less space with the iR3300 black and white office photocopier. Handling the work of many in one compact solution, the iR3300 provides a cost-effective solution to your printing needs.
Features of the iR3300:

• Provides copying, printing, scanning and faxing all in one unit.
• Has a print speed of 33 pages per minute .
• High capacity paper supply
• Double-sided printing as standard.
• Compact and reliable design.
• Productive and space saving finishing options.

i m using canon ir3300 , showing paper jam at left side , but i checked there is no any paper, although there is showing jam. what to do.

canon ir 3300i model xerox machine first tray put in the paper
but message load pater not taken printout in the first tray
pls help me

clean the transfer/separation and try to invert the paper it would help.

According to the LexMark support page, this is most often related to not getting the print cartridge assembly properly positioned. (Left and right sides not fully in place). Another possible source is paper in the output tray when using the double sided printing feature. (This leads to grabbing an extra sheet when it tries to retrieve the paper to print the second side. Paper stock thickness will change the number of pages printed before this happens.).

I hope this helps.

check between the rollers there will be small bits of paper jammed in that is the reason.

Do you use the duplexer a lot? It sounds as if the rollers inside need to be cleaned. I don't recommend doing this yourself as it involves lifting the printer off of the duplexer, and I don't want to be responsible if you accidentally drop the printer or you or someone gets hurt. But that's how to get to it; the offending rollers should be visible, and may be cleaned with a clean rag moistened with a multi-purpose cleaner. Alcohol is what's recommended, but I shy away from it as it's known to dry the rubber, and all you want to do it clean the built-up dirt and paper duct off of it. Let me know how it works, if you do it! If you opt not to, call a qualified printer technician.