I have laserjet 1018 printer, it prints crooked and slanting, what is the prob?

The 1018 is not supported by HP with the Mac OS Mountain Lion. I found this on an HP forum and it worked for someone else. You could try this:

Hi,
Thank you for posting,
Unfortunately, HP laserjet 1018 is not suported in Mac OS X 10.8 Mountain Lion. How evere you can use the builtin drivers that goes along with the operating system and select teh driver of another printer and check.
Connect the printer to the computer and then go to System Preferences and click on Print and Fax. In the Print Fax window, lick on the Plus sign and you will find the printer, please select the printer and then under print using click on the drop down and click on "Select print Software" and in the list, please select HP Laserjet 1015 pr HP Laserjet 1022 and check.
If you don't find these printers in the list, please download and install the latest print driver version 2.12 from the apple web site using the link below.
http://support.apple.com/kb/DL907
After downloading and install the update, please try the steps given above.

please visit the following link.

http://h10025.www1.hp.com/ewfrf/wc/document?docname=c01973618&tmp_task=solveCategory&lc=en&dlc=en&cc=us&lang=en&product=1814094

Hold the 2 buttons on the operation panel down for a few seconds until the light begin to flash. Then release them. This will print a configuration page which will contail a line with the total pages printed information.

just try to print the self test of the hp 1018 printer.self pest is printed directly from the printer not by giving command from the printer. press any one of the button on the printer and hold it till the light blinks.leave the button when light starts blinking .place the paper in the tray.as soon as you leave the button .a self page will be printed..that is self test.if the self test comes out proper that means its your driver software problem.but if self test also has problem then its the clear problem of dust collected on the printer reading lens due to not using it for 2 years.so the printer needs servicing. get it serviced at local printer repair shop .

try another toner cartridge, that should solve it, if not, it is the fuser and it's cheaper to buy a new printer

change the cartridge and try it

Reseat the paper in the paper tray, and replace the pickup rollers for both trays, note the pickup rollers are in the trays and under each tray.

change drum check here how

The problem can be with the software program. May be the formating of that particular text has been accidentally changed to italic. Or print the same on a plain A4 paper or slightly bigger paper than the check and see if you get the same problem.

Have you installed the new drivers for your HP?

Personally, on all HP Printers, I use only HP products, mainly Jetdirect Print Servers, but you might try creating a TCP Port Printer (via your Printer Install Wizard) and use that. You only need to know the IPAddress of the DLink and the Drivers for the HP Printer.