Canon imagePROGRAF iPF820 iPF820 User Manual - Page 560
Manual Straightening of Lines and Colors (Manual Head Adj
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Adjusting the Printhead Manual Straightening of Lines and Colors (Manual Head Adj) If printed vertical lines are warped or colors are out of alignment, adjust the Printhead alignment. With Manual Head Adj, you can manually adjust the Printhead alignment by printing and reading a test pattern. You can adjust the Printhead alignment automatically or manually. Normally, choose automatic adjustment. If advanced adjustment does not improve printing results, or if you are using special paper, try manual adjustment. For instructions on straightening lines and colors automatically, see "Automatic Straightening of Lines and Colors (Auto Head Adj.)". (→P.544) Note • If Manual Head Adj is not available although displayed in the menu, choose Advanced Adj. in Auto Head Adj.. Manual Head Adj is available in the menu after you try Advanced Adj. once. • Always make sure the loaded paper matches the type of paper specied on the printer. Adjustment cannot be completed correctly unless the loaded paper matches the settings. • We recommend using the type of paper you use most often for adjustment. 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 Manual Head Adj as follows. 1. Load paper. • Attaching the Roll Holder to Rolls (→P.115) • Loading Rolls in the Printer (→P.118) • Loading Sheets in the Printer (→P.150) 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. 546 Adjustments for Better Print Quality
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