Canon i550 i550 Quick Start Guide - Page 33
Examining the Nozzle Check Pattern - print head cleaning
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Printing Maintenance Examining the Nozzle Check Pattern The nozzle check pattern should appear as follows when ink is discharged properly. Examine the nozzle check pattern output by the printer. (1) Lines missing here indicate, the print head requires cleaning. See "Print Head Cleaning" on page 31 (2) Unevenness in these patterns indicates the print head requires alignment. See "Aligning Print Head" on page 36 Print Head Cleaning Clean the print head if you suspect that the nozzles might be clogged. Cleaning the print head consumes ink, so perform print head cleaning only when necessary. 1 Ensure that the printer is on. 2 Open the Printer Properties dialog box. See "Opening the Printer Properties dialog box directly from the Start menu" on page 21 31