Canon Imageprograf Ipf825 User Guide

Adjustments for Better Print Quality
Adjusting the Printhead
676Adjusting the feed amount
684Adjustments for Better Print Quality >
iPF825 8
675
 

Adjusting the Printhead
Adjusting the Printhead ................................................................................................................................... 676
Automatic Straightening of Lines and Colors (Auto Head Adj.) ..................................................................676
Manual Straightening of Lines and Colors (Manual Head Adj) ...................................................................678
 
Adjusting Line Misalignment (Head Inc. Adj.)...

Note
• If advanced  adjustment  does  not  improve  printing  results,  or  if  you  are  using  special  paper,  try  manual  ad-
justment.
For  instructions  on  manual  adjustment,  see  "Manual  Straightening  of  Lines  and  Colors  (Manual  Head
Adj)." →P.678
• Use  Standard 

Adj.  if  you  have  switched  to  another  type  of  paper  or  if  you  want  the  boundaries  between
colors to appear as attractive as possible.
• Use  Advanced Adj.  to fine-tune the space between nozzles or...

6.
Press ▲ or ▼ to select  Yes, and then press the  OK button.
A test pattern is printed for printhead adjustment.
Adjustment is now finished if you have printed on a roll or a sheet of A2 size or larger.
7. If 
you  are  printing  on  sheets  smaller  than  A2  size  for  Advanced  Adj.,  a  confirmation  message  is  displayed  asking
you whether to continue printing. Press the  OK button and follow the instructions displayed.Manual Straightening of Lines and Colors (Manual Head Adj)
If printed...

2.
Press the Menu button to display  MAIN MENU.3.
Press ▲ or ▼  to select Adjust Printer, and then press the  ▶ button.
4. Press  ▲ or ▼ to select  Manual Head Adj , and then press the  ▶ button.
5. Press  ▲ or ▼ to select  Yes, and then press the  OK button.
A test pattern is printed for printhead adjustment.
6. Press ▲ or ▼ to select  D, and then press the ▶ button.
7. Press ▲ or ▼ to select  D-1, and then press the  ▶ button.
8. Examine test pattern  D-1 for printhead adjustment and determine the...

13.
Press ▲ or ▼ to select  Yes, and then press the  OK button.
The adjustment value is now registered, and adjustment is complete. Adjusting Line Misalignment (Head Inc. Adj.)
If printed lines are misaligned, try adjusting the angle of the Printhead. Even slight misalignment can be corrected. Adjust
the Printhead orientation by printing and reading a test pattern.
Paper to Prepare Rolls An unused roll at least 10 inches wide
Sheets One sheet of unused paper of at least A4/Letter size
Execute 
Head Inc....

6.
Open the Top Cover. 7.
Align the Angle Adjustment Lever with the red square and close the Top Cover. Adjustments for Better Print Quality > Adjusting the Printhead >
iPF825
Adjusting Line Misalignment (Head Inc. Adj.) 8
681
 

A test pattern is printed for adjustment.
Important
• Do not touch the Linear Scale (a), Carriage Shaft (b), or Ink Tube Stabilizer (c). Touching these parts
may damage them. 8.
Examine the test pattern for adjustment. Determine the straightest set of lines. 9.
Open 
the  Top  Cover  and  move  the  Angle  Adjustment  Lever  to  match  the  number  (or  the  square)  of  the  straightest
set of lines.
If no single set of lines is perfectly straight, move the Angle Adjustment Lever to a position between...

10.
Close the Top Cover.
The Printhead is now straight, and adjustment is complete. Troubleshooting Paper Abrasion and Blurry Images (Head Height)
If paper rubs against the printer or the edge is wrinkled from rubbing, adjusting the Printhead height may improve results.
If image edges are blurred, it may help to lower the Printhead.
1. Press the Menu button to display  MAIN MENU. 2.
Press ▲ or ▼ to select  Paper Details, and then press the ▶ button.
3. Press  ▲ or ▼ to select the type of paper, and then...

Adjusting the feed amount
Adjusting the Feed Amount ............................................................................................................................. 684
Selecting a Feed Amount Adjustment Method (Feed Priority) ....................................................................684
Auto Band Adjustment (Auto Band Adj.) ..................................................................................................... 685
Manual Band Adjustment (Manual Band Adj)...