Canon imagePROGRAF iPF825 Basic Guide No.2 Basic Manual page 26

If printed vertical lines are warped or colors are out of alignment, adjust the Printhead alignment.
Use Auto Head Adj. to have the printer print and read a test pattern for automatic adjustment of the printhead.
Auto Head Adj. offers two modes, Standard Adj. and Advanced Adj. .
Standard Adj. will fi x most slight image distortion or color misalignment, but if not, try Advanced Adj. .
• Always make sure the loaded paper matches the type of paper specifi ed on the printer. Adjustment cannot be
completed correctly unless the loaded paper matches the settings.
• This function is not available with CAD Tracing Paper , CAD Translucent Matte Film , or CAD Clear Film . If
adjustment is not possible as expected using highly transparent fi lm or similar media, try another type of paper, or
try adjust the Printhead alignment manually. (→"Manual Straightening of Lines and Colors (Manual Head Adj)," User
Manual )
• If advanced adjustment does not improve printing results, or if you are using special paper, try manual adjustment.
(→"Manual Straightening of Lines and Colors (Manual Head Adj)," User Manual)
• 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 fi ne-tune the space between nozzles or colors if you have switched the printhead or if you
want printed documents to appear as vivid as possible. We recommend using Advanced Adj. for printing at a
higher level of image quality.
• We recommend using the type of paper you use most often for adjustment.
Paper to
Prepare
If Vertical Lines are Warped or Colors
are Misaligned
This section describes how to perform automatic adjustment of the printhead to
straighten lines and colors.
• Rolls
An unused roll at least 10 inches wide
• Sheets
Standard Adj. : One sheet of unused paper of at least A4/Letter size
Advanced Adj. : Five sheets of unused paper of at least A4/Letter size (or one sheet when
using A2 or larger, or two sheets when using A3 loaded lengthwise)
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