Canon iP4000 prints lines

SOURCE: Canon PIXMA iP4000 Will not print red Deep clean won t work Other colors OK

remove print head assembly. clean off.
print head not on cartridge. 

SOURCE: Pixma iP4000 pauses to dry colour printing.

http://www.usa.canon.com/consumer/controller?act=ModelInfoAct&tabact=SupportDetailTabAct&fcategoryid=257&modelid=10239

please go to the link above and enter the sentence below.

How do I change the time it takes for the ink to dry?

And it is very, very, interesting...you'll see.

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: Using a Canon pixma ip4000 and when printing

You need to replace the printhead, QY6-0049-000. They get plugged and cannot be cleaned. around $40.00