Our printer HP 1280 we can print 1 page only then trouble will occur paper jam even theres no paper clog inside the roller..

make sure you don't have any small pieces of paper stuck in the printer
Paper jams can be real or false. The unit may report a paper jam when there is not any jammed paper, however, the solution to a real paper jam or a false paper jam is the same. WARNING: Jammed paper must be removed using the rear access door and the power cord must be disconnected or a carriage jam or mechanical damage may occur. Do not remove jammed paper from the front of the unit.

1. Turn off the HP product and turn it so the back of the unit faces you.
2. Disconnect the power cord from the back of the all-in-one. The power cord must be disconnected to allow the paper feed rollers to turn freely.
3. Locate and open the rear access door by pressing in on the left side tab and then pulling the door toward you. Figure 1: Removing the rear access door Inspect the pressure rollers on the rear access door and verify that they are clean and turn freely. Clean the rollers if needed with a soft towel lightly moistened with water. If the rollers do not turn freely, replace the rear access door.
4. Inspect the pressure rollers on the rear access door and verify that they are clean and turn freely. Clean the rollers if needed with a soft towel lightly moistened with water. If the rollers do not turn freely, replace the rear access door. Click How to buy on this page to order replacement parts.
5. From the rear access door opening, remove the jammed paper.
6. Remove the remaining paper from the paper supply tray. Discard any paper that is damaged or crumpled and then re-stack and reload the paper into the paper supply tray.
7. Reinstall the rear access door.
8. Reconnect the power cord to the unit and turn the unit on. If a carriage stall occurs after clearing the paper jam, resolve the carriage stall.

Clear the paper jam Followthese steps in the order presented to clear the paper jam. Step one: Remove any loose paper: Remove any loose sheets of paper from the input tray and theoutput tray. Take note: Do not remove jammed paper at this stage. Trying to clear jammed paper from the front of the product can damage the print mechanism. Step two: Clear the jam from therear of the product Take note : Never pull jammed paper from the front of the product. If you can pull it from the rear of the product or the tray, always try the rear first. Pulling paper from inside the front cover can cause mechanical damage to the product. 1. Pressthe Power button ( ) to turn off the product. 2. Disconnectthe USB cable from the rear of the product. 3. Disconnectthe power cord from the rear of the product. 4. Pressin the tab on the left side of the rear door to release the door. Remove thedoor by pulling it away from the HP All-in-One. Figure 1: Press the left side tab torelease the rear access door Gently remove any jammed paper orbits of torn paper from the rollers inside the product. Use both hands to pullout any whole sheets of paper to avoid tearing them. Take Note: Use a flashlight to thoroughly check the rollers and wheels for torn pieces of paper that might remain inside the product. If any torn pieces of paper remain inside the product, more jams are likely to occur. Figure2: Remove scraps of paper Replacethe rear access door. Gently push the door forward until it snaps into place. Step three: Clear the jam from theautomatic document feeder (ADF) 1. Openthe cover of the ADF. Figure 3: Open the cover of the ADF 1. Gentlypull the paper out of the rollers. CAUTION: If the paper tears when you are removing it from the rollers, check the rollers and wheels for torn pieces of paper that might remain inside the product. If you do not remove all the pieces of paper from the product, more paper jams are likely to occur. 2. Closethe cover of the ADF. Step four: Clear the jam from thefront of the product 1. Lookinside the product through the paper output tray to check if any loose or tornpaper is stuck in the rollers. 2. Gentlypull the paper out of the rollers. You must Remove paper from the front of the product as carefully as possible. If any torn pieces of paper remain inside the product, more paper jams are likely to occur, and this could damage the print mechanism. Use a flashlight to make sure that you find all traces of paper. 3. Reconnectthe power cord to the rear of the product. 4. Pressthe Power button ( ) to turn on the product. Step five: Print a self-test report Printa self-test report. Please inform me if this help you with the paper jamproblem.

Paper stuck inside the HP All-in-One can cause jams or also sometimes there are some instruction that get stuck in the printer internal mechanism .
Power off the printer , unplug the power cable. Wait for 30 sec. , Replug the power cable. Power on the printer.
Check for a stuck paper or torn bits of paper.
Clear jam from the back of all-in-one
Press in the tab on the left side of the rear door to release the door. Remove the door by pulling it away from the HP All-in-One.Trying to clear a paper jam from the front of the HP All-in-One can damage the print mechanism. Always access and clear paper jams through the rear door.
Gently pull the paper out of the rollers.If the paper tears when you are removing it from the rollers, check the rollers and wheels for torn pieces of paper that might be remaining inside the device. If you do not remove all the pieces of paper from the HP All-in-One, more paper jams are likely to occur.
Replace the rear door. Gently push the door forward until it snaps into place.
Press OK to continue the current job.
Clear the jam from the automatic document feeder (ADF)
Paper can also jam in the automatic document feeder. Follow the steps below to clear a paper jam in the automatic document feeder(ADF)
Lift the cover of the automatic document feeder.
Gently pull the paper out of the rollers.
Reload and test the all-in-one
Once you have removed the jammed paper, verify that the all-in-one is still functioning properly.
Reload the all-in-one with either plain or photo paper.
Print a page from a memory card or the computer.
If you have completed all the steps listed above and are still experiencing a problem contact HP to service the product.

there is dirt or paper covering the sensor inside, you should be able to easily take out once of the long tubes to clear this.

You need the pick up rollers replaced. Call your service centre to replace pick rollers as these are feeding the pages crocked

I had the same kind of issue but was disappointed to learn that two sided printing is not possible in this printer.

Hope the technology improves !

Try this, make a print from the by-pass tray, does it go OK or jam??
If it jams then there is a problem with the paper feed from the tray.
If it jams then
1-check the drum and see if there is an image on it( you can put a mark on the edge to see if it's rotating, thus eliminating the drum unit)
2-same for the reg roller
3-check for labels ar foreign objects

hp printers typically do not have an error message to cover every known condition, thus if the printer needs maintenance in an undefined area, it will invariably indicate a paper jam. The printer usually responds to the installation of a maintenance kit which will include transfer roller, pickup rollers, and fuser.

duplex area related jam in other printers. is problem only occurring in tray 1. If so, there is a problem with the tray. If it's happening from tray 1 and tray 2, replace try replacing transfer belt.

Carefully pull it out. Try not to rip the paper, because you may get some stuck inside. It may be necessary to open the printer up and even remove part of the cover to get it all out.