Printing streak I have aligned and cleaned the printer head a couple of times but no luck in removing a "off color" printing streak that is perpendicular to feed direction of the 4x6 photos.

SOURCE: Printer will not use the magenta color

I had the same problem. It is most likely that your print head nozzles are clogged. Your choices are to attempt to manually clean them, or order a new print head from Canon.

Attempt the manual cleaning at your own risk, this doesn't always work. When it does not work, it means your print head is damaged.

To maually clean the print head. Printer cover up (so you can get to the cartridges and print head). Turn the Printer Off. Remove all the cartridges (I put each cartridge in a separate zip lock bag). Then flip up the lever and remove the print head.
Now heat (don't boil) distilled water (Iused a good sized cook pan and a plastic measuring cup to pour the water). Find a container you can soak the print head in (I used a deep alluminum baking pan). Pour the hot (not boiling) distilled water over the print head molding where the cartridges seat down (hold the printhead over your diposable alluminum pan). Then dunk the molded print head part into the pan numerous times. When the water gets dark change it (be carefuill not to stain the sink). Then slowly pour the hot distilled over the print head (opposite side from where the cartidges seat in). Eventually no ink will be in the water. Set the print head on a dry paper towel, and let it dry for 24 hours or longer. Reinstall the print head, then the catridges. If it worked, your true colors will return. It make take up to 15-20 photos to get all the ink catridges flowing-be patient. You can also just wait 24 hours after re-installing the cartridges, and hopefully it will take less photos to see the correct color match.

Never keep printing when a cartridge is low or out.
Print a few prints every week. Not printing for weeks causes the printheead and the ink flow to clog!

Good luck. I just recovered my S820 and my i900D using the above cleaning method. Like everything else, your mileage may vary! It cost me $1.29 for distilled water and about an hours worth of time!

SOURCE: horizontal lines through my printed photos

Are you sure your ink is not on the verge of finishing? Try changing the colour ink and print again. Sometimes I take the cartridge out, shake the ink down just in the same flashing motion as I do my pen, then replace it. You may try that.

SOURCE: canon pixma ip500 horizontal bands of non-printing areas

Hi it's Gill again. I've been looking around more on the net and I think the problem is our printers need new printheads which I'm told are spare parts easy to change. Hope this helps. Gill

SOURCE: When I print photos, they have uniform vertical streaks.

Issue: Banded or streaked prints
Solution: Change the Print Quality Settings (Windows)

Change the Print Quality Settings (Windows) The Quality setting controls how finely ink droplets are placed on the printed page. Depending on the type of paper being used a higher Print Quality setting does not always insure a better print. Print speed will decrease as the Print Quality setting is increased. Follow the instructions below to change the print quality settings in the Canon printer driver for the Windows operating system through a printing application.

1. Click 'Properties' in the Print dialog box.
   
   Note: Depending on the Application software, 'Properties' may be displayed as 'Preferences'.
   
   
2. Set the desired print quality in the 'Print Quality' section.
   
   
3. Select 'High', 'Standard', or 'Draft / Fast'.
   

1. Select 'Custom' and click 'Set'.
   
   
   
   
2. In the Set Print Quality dialog drag the slide bar from 'Fast' to 'Fine' to select the print quality.
   
   
   
   Note: There are five options in 'Quality'. However, selectable options are limited depending on the media type.
   
   
3. Select 'Auto', 'Dither', or 'Diffusion' from the 'Halftoning' section.

SOURCE: Does not print all colors on some passes

If some colors are printing but other colors are not printing this usually indicates a problem with the printer color supply (ink, film or toner exhausted), a problem with the printer (stuck ink nozzle, dye film not advancing, toner drum clogged or jammed), or a problem with the printer drivers used on the computer. Refer to the documentation that came with your printer and printer software for assistance. and even then if u want our technician support contact us at http://tinyurl.com/mtgjzz