White horiontal lines in all color printing, but not in black. Did cleaning and deep cleaning repeatedly, no improvement at all. Canon tech at website suggested turn it in for repair in a city 50 miles away. I'd rather find a way to fix it myself, if possible.

First, are you running low on those ink colors? If not, possibly print cartridges need cleaning. If printer has separate print heads, they made need cleaning.
Lastly, print head(s) may need replacement.

Hi Carl Montero,
Your issue may be attributed to two possible points of failure. 1.) The Nozzle is clogged, 2.) the ink is already dry inside. You can try to clean the nozzle by doing the following steps. If it does not work, try to replace the cartridge with a new one.
FINE Cartridge Cleaning
1 Press [Menu] repeatedly until appears. 2 Use [ ] or [ ] to select . 3 Press [OK]. 1 Press [Maintenance] repeatedly until appears. 2 Press [Black] or [Color].
FINE Cartridge Deep Cleaning
1 Press [Menu] repeatedly until appears. 2 Use [ ] or [ ] to select . 3 Press [OK]. 1 Press [Maintenance] repeatedly until appears. 2 Press [Black] or [Color].
Note If deep FINE Cartridge cleaning does not improve the print quality, contact a Canon service representative.

sounds like you are out of ink or the cartridge(s) need cleaning. Go to "printer properties" then "maintenance" and click "cleaning" or "deep cleaning". Then print a "nozzle check" to see if it worked. If it improves, repeat until 100%. If not, get a new cartridge.

good luck with it

LC1000
www.inkbank.com.au

f print quality does not improve by the standard cleaning of the Print Head, clean the Print Head deeply. Cleaning the Print Head deeply consumes more ink than the standard cleaning of the Print Head, so clean the Print Head deeply only when necessary.
1. Make sure that the power is turned on.

2. Clean the Print Head deeply. (1) Press the (Maintenance) button repeatedly until y appears.
(2) Press the Black or Color button.
The machine starts cleaning the Print Head deeply. Do not perform any other operations until the machine completes the deep cleaning of the Print Head. This takes about 2 minutes.

3. Check the print head condition.

When the deep cleaning is completed, the LED returns to the copy standby mode. To check the print head condition, print the nozzle check pattern.

See " Printing the Nozzle Check Pattern".

If the problem is not resolved, turn off the power and clean the Print Head deeply again after 24 hours.
If the problem is still not resolved, replace the FINE Cartridge with a new one.

See " Replacing FINE Cartridges".
If the problem is still not resolved after replacing the FINE Cartridge, contact the service center.

Printing the Nozzle Check Pattern
Print the nozzle check pattern to determine whether the ink ejects properly from the print head nozzles.

NOTE If the remaining ink level is low, the nozzle check pattern will not be printed correctly. Replace the FINE Cartridge whose ink is low.
See " Replacing FINE Cartridges".



You need to prepare: a sheet of A4 or Letter-sized plain paper

1. Make sure that the power is turned on.

2. Load a sheet of A4 or Letter-sized plain paper in the Rear Tray.

3. Open the Paper Output Tray gently, and open the Output Tray Extension.

4. Print the nozzle check pattern.

(1) Press the (Maintenance) button repeatedly until A appears.
(2) Press the Black or Color button.

The nozzle check pattern will be printed.

5. Examine the nozzle check pattern.
See Examining the Nozzle Check Pattern.

Examining the Nozzle Check Pattern

Examine the nozzle check pattern, and clean the Print Head if necessary.

1. Check if there are missing lines in the pattern (1) or horizontal white streaks in the pattern (2). (1) Check if lines are missing in this pattern. If yes, the cleaning is required.
See " Cleaning the Print Head".


(A) Good
(B) Bad (lines are missing)

(2) Check if horizontal white streaks are present in this pattern. If yes, the cleaning is required.
See " Cleaning the Print Head".

(A) Good
(B) Bad (horizontal white streaks are present)
Post back!

The problem you are describing is with the black ( BC-10 ) print head and not with the printer.

1. Check your black ink tank and be sure it is not dry.

2. Run the printer through one DEEP cleaning cycle and see if that improves the print.

If your black ink tank is full, and the deep cleaning cycle produces no improvement, you will need to replace the BC-10 print head.

Try wiping the print head with a soft damp cloth - it works for me.

Print Nozzle Check Pattern

1. Press the Open button to open the output tray.
   
   
   
   
2. Load letter-sized plain paper in the auto sheet feeder (ASF) or the cassette.
   
   
3. Display the Maintenance screen on the printer.
   
   
4. Press the up or down cursor to select [Nozzle check], then press the <OK>.
   
   
   
   
5. Press the up or down cursor to select [Yes], then press <OK>. (The nozzle check pattern is printed.)
   
   
6. Confirm the nozzle check pattern.
   

< 1 > The normal nozzle check pattern
< 2 > The abnormal nozzle check pattern

< 3 > Some black ink lines are broken.

< 4 > White lines are present in the color ink pattern.

< 5 > Both black and color inks are not present.
Note:

1. When all patterns are printed normally, press the up / down cursor button to select "All A" and press the OK button.
   
   
2. When any patterns are printed abnormally, press the up / down cursor button to select "Also B" and press the OK button.
   

Print Head Cleaning:

1. Display the Maintenance screen on the printer.
   
   
2. Press the up or down cursor to select [Cleaning], then press <OK>.
   
   
   
   
3. Press the up or down cursor to select [Yes], then press <OK> to start print head cleaning.
   
   Note:
   Do not do any other operations until print head cleaning is completed.
   
   
   
4. Print the nozzle check pattern and check the print head status.
   

Deep (Print Head) cleaning:

1. Display the Maintenance screen.
   
   
2. Press the up or down cursor to select [Deep cleaning], then press <OK>.
   
   
   
   
3. Press the up or down cursor to select [Yes], then press <OK> to start print head deep cleaning.
   
   Note:
   Do not do any other operations until print head deep cleaning is completed.
   
   
   
4. Print the nozzle check pattern and check the print head status.
   
   Note:
   Ifthe printed result does not improve even after doing print head deepcleaning, turn off the printer. Then, after 24 hours or later, do printhead deep cleaning again. (After a given time interval, ink coulddissolve itself, resulting in ink unclogging.
   
   

Dear louis,
You have done right thing by cleaning the print head. If the print head still clogged after repeatedly cleaning, It seems that the print head need to be replace with new one. Make it sure by printing nozzle check pattern. Is it good or not?.
Regards,

Source:
Canon Inkjet Printer Forum

Your post "...it prints very faint horizontal lines in color..." is indicative that indeed your color printheads are clogged and would need repetitive deep head cleaning. This is of course would require that you keep on cleaning until such time as the faint color lines have turned to legible print.

Print Head Cleaning / Head Refreshing If the printed nozzle check pattern is broken, missing, or a specific color is not printed, clean the print head. NOTE:
a. Cleaning the print head consumes a small amount of ink. Cleaning too often reduces the amount of ink in the ink tanks.
b. Print head cleaning is performed when you connect the power cord. Your machine may perform print head cleaning periodically to avoid clogging.

1. Press <COPY> or <PHOTO>.
   
   
2. Press <Menu> repeatedly until <USER DATA> appears.
   
   
3. Press < (left arrow) or > (right arrow) to select [MAINTENANCE].
   
   
   
   
4. Press <OK>.
   
   
5. Use < or > to select [CLEANING] or [HEAD REFRESHIN] as necessary.
   
   
   
   [CLEANING]: Performs normal print head cleaning.
   [HEAD REFRESHIN]: Performs deep print head cleaning.
   
   
6. Press <OK>.
   
   
   
   
7. Print a Nozzle Check Pattern to see if print quality improved.
   
1. Press <COPY> or <PHOTO>.
   
2. Press <Menu> repeatedly until <USER DATA> appears.
   
3. Press < (left arrow) or > (right arrow) to select [MAINTENANCE].
   
   
   
4. Press <OK>.
   
   
   
5. Press <OK> again.
   The machine prints a nozzle check pattern (A).
   
   
   
   
8. If broken or white lines appear in the pattern, perform two Head Refreshings (from steps 1 through 6) then print another Nozzle Check Pattern.
   
   
9. If print quality does not improve after two Head Refreshings, replace the appropriate ink tank.

Confirming The Nozzle Check Pattern
Broken lines
White lines
Click here to return to step x to perform Head Refreshings