Canon printer PIXMA i850 Series User Manual

Print Quality is Poor or Contains Errors
131
Troubleshooting
Printed Paper Curls or Ink Blots
nUse high resolution paper or photo paper to print images that require a lot of ink, 
(i.e. pictures with intense colors or photographs).
nReduce the Intensity setting in the printer driver and try printing again.
Windows
1Open the Printer Properties dialog box.
2On the Main tab, select Manual for Color Adjustment, and then click Set.
3Drag the Intensity slide bar to adjust the intensity. 

Print Quality is Poor or Contains Errors
132
Troubleshooting
Macintosh
1Open the Print dialog box.
2For Print Mode, select Manual and then click Details.
3Click the Color icon and then drag the Intensity slide bar to set the 
intensity. 

Print Quality is Poor or Contains Errors
133
Troubleshooting
Back of Paper is Smudged
nIf the next page prints before the ink is dry, set the Ink Drying Wait Time.
You can either remove each printed sheet from the output tray as soon as it is printed, 
or set the Ink Drying Wait Time to pause after each sheet has printed.
Windows
1Open the Printer Properties dialog box.
2Click the Maintenance tab.
3Click Custom Settings to open the Custom Setting dialog box.
4Set the Ink Drying Wait Time, and then click...

Print Quality is Poor or Contains Errors
134
Troubleshooting
Macintosh
1Open the Page Setup dialog box.
2Click the Utilities button.
3Select Custom Settings form the pull-down menu.
4Select Pause between pages., and then click Send.
nYou may need to clean some internal parts of the printer. Follow the procedure 
below.
1Load sheets of A4 or Letter plain paper in the printer.
2Hold down the RESUME/CANCEL button until the POWER lamp ßashes 
three times, and release the button.
3Repeat this operation until...

Print Quality is Poor or Contains Errors
135
Troubleshooting
Printed Surface is Scratched
nEnsure you are using suitable paper.
¥ The paper weight must be less than 105 gsm (28 lb).
If you use non-Canon brand paper heavier than 105 gsm (28 lb), the print head may 
scratch the printed surface.
Clean the print head Þrst and print with the correct paper.
¥ The paper must not be curled.
This problem can be resolved by simply turning the paper over.
nBefore starting Borderless Printing, check the paper that...

Print Quality is Poor or Contains Errors
136
Troubleshooting
nReduce the Intensity setting in the printer driver and try printing again.
When printing an image with high intensity, especially on plain paper, the paper may 
absorb too much ink and become wavy. This may cause the printed surface to become 
scratched.
Windows
1Open the Printer Properties dialog box.
2On the Main tab, select Manual for Color Adjustment, and then click Set.
3Drag the Intensity slide bar to adjust the intensity.
Macintosh...

Print Quality is Poor or Contains Errors
137
Troubleshooting
White Streaks
nPrint the nozzle check pattern to check the ink output.
If a speciÞc color does not print in the nozzle check pattern, clean the print head.
áPrinting the Nozzle Check Pattern
áPrint Head Cleaning
The problem can also be resolved by aligning the print head. For details on print head 
alignment, refer to Straight Lines are Misaligned. 

Print Quality is Poor or Contains Errors
138
Troubleshooting
Colors are Uneven or Streaked
nIncrease the print quality setting in the printer driver settings.
Windows
1Open the Printer Properties dialog box.
2On the Main tab, click High for the Print Quality setting.
Macintosh
1Open the Print dialog box.
2For Print Mode, select Manual and then click Details.
3Click the Quality icon and then drag the Print Quality slide bar to the Fine 
end. 

Print Quality is Poor or Contains Errors
139
Troubleshooting
nSet the halftoning method to Diffusion in the printer driver settings.
Windows
1Open the Printer Properties dialog box.
2On the Main tab, select Custom for the Print Quality setting, and click Set.
3Click Diffusion for the Halftoning setting.
Macintosh
1Open the Print dialog box.
2For Print Mode, select Manual and then click Details.
3Click the Quality icon and then click Diffusion for the Halftoning setting. 

Printer Does Not Start or Stops During Print Jobs
140
Troubleshooting
Printer Does Not Start or Stops During Print Jobs
¥Printing Does Not Start
¥Printing Stops Before It is Completed
¥Printer Moves But Does Not Print
¥Print Head Holder Does Not Move to the Centre