Canon Pixma Ip4840 User Guide

The Nozzle Check dialog box opens after the confirmation message. 
5.Check the results  
To check whether the print quality has improved, click P rint Check Pattern. To cancel the check
process, click Cancel. 
Important 
Cleaning consumes a small amount of ink. Deep Clean ing consumes a larger amount of ink than
Cleaning. 
Cleaning the print heads frequently will rapidly de plete your printers ink supply. Consequently,
perform cleaning only when necessary. 
Note 
If there is no sign of improvement after...

Advanced Guide > Maintenance > Performing Maintenance from a Computer > Cleaning the Paper Feed Rollers 
P027 
Cleaning the Paper Feed Rollers 
Cleans the paper feed roller. Perform feed roller cleaning when there are paper particles sticking to  the
paper feed roller and paper is not fed properly.  
The procedure for performing the feed roller cleani ng is as follows: 
 Roller Cleaning 
1.Prepare the printer  
Remove all sheets of paper from the paper source fr om which paper could not be properly fed....

Advanced Guide > Maintenance > Performing Maintenance from a Computer > Aligning the Print Head Position 
P028 
Aligning the Print Head Position 
Print head alignment corrects the installation positions of the print head and improves deviated color s
and lines.  
This printer supports two head alignment methods: a utomatic head alignment and manual head
alignment. Normally, the printer is set for automat ic head alignment.
If the printing results of automatic print head ali gnment are not satisfactory,...

Advanced Guide > Maintenance > Performing Maintenance from a Computer > Manual Print Head Alignment
U065
Manual Print Head Alignment
This section describes how to align the Print Head  manually.
If the results of Automatic Print Head Alignment are n ot satisfactory, follow the procedure below to
perform Manual Print Head Alignment to precisely al ign the Print Head.
For details on performing Automatic Print Head Alignm ent, refer to 
Routine Maintenance.
Note
Close the Inner Cover if it is open.
The...

Note
If it is difficult to pick the best pattern, pick the setting that produces the least noticeable
vertical white streaks.
(A) Less noticeable vertical white streaks 
(B) More noticeable vertical white streaks
2. Repeat the procedure until you finish inputting the p
attern number for column G, then click OK.
For column F and G, pick the setting that produces  the least noticeable horizontal streaks.
Note
If it is difficult to pick the best pattern, pick the setting that produces the least noticeable...

6.Look at the second printout and adjust the print head position.
1. Check the printed patterns and select the number of  the pattern in column H that has the least
noticeable vertical streaks.
Note
If it is difficult to pick the best pattern, pick the set ting that produces the least noticeable
vertical white streaks.
(E) Less noticeable vertical white streaks 
(F) More noticeable vertical white streaks
2. Repeat the procedure until you finish inputting the p attern number for column Q, then click OK....

Note
If it is difficult to pick the best pattern, pick the setting that produces the least noticeable
horizontal white streaks.
(G) Less noticeable horizontal white streaks 
(H) More noticeable horizontal white streaks
2. Repeat the procedure until you finish inputting the pa ttern number for column j, then click OK.
3. Confirm the displayed message and click OK. 
Manual Print Head Alignment is complete.
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Manual Print Head Alignment
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Advanced Guide > Maintenance > Performing Maintenance from a Computer > Checking the Print Head Nozzles 
P029 
Checking the Print Head Nozzles 
The nozzle check function allows you to check wheth er the print heads are working properly by printing a
nozzle check pattern. Print the pattern if printing b ecomes faint, or if a specific color fails to print. 
The procedure for printing a nozzle check pattern i s as follows: 
 Nozzle Check 
1.Open the printer driver setup window
2.
Click Nozzle Check on the...

Advanced Guide > Maintenance > Performing Maintenance from a Computer > Cleaning Inside the Printer 
P030 
Cleaning Inside the Printer 
Perform bottom plate cleaning before you execute duplex printing to prevent smudges on the back side
of the paper. 
Also perform bottom plate cleaning if ink smudges c aused by something other than print data appear on
the printed page.  
The procedure for performing bottom plate cleaning  is as follows: 
 Bottom Plate Cleaning 
1.Open the printer driver setup window
2....

Advanced Guide > Changing the Printer Settings 
Changing the Printer Settings 
Changing Printer Settings from Your Computer
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Changing the Printer Settings
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