H[WHRU&ODQSULQWHUWKHRI￿ Use a soft cloth moistened with water.

zClean any smudges or dust.

Do not clean the exterior of the printer with volatile liquids such as thinners, benzine, or any spray-type or chemical cleaners; doing so will damage the surface of the printer.

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The print head unit contains nozzles through which color ink is propelled onto the paper. The print head nozzles must be free from paper particles and dust in order to maintain a high level of print quality.

The printer has an automatic cleaning function that clears away paper particles and dust when you turn on the printer after it has been turned off for a certain period of time.

You need to activate the print head cleaning procedure whenever you replace the print head unit or individual ink tanks, or when your print quality is poor. There

are three7KRURXJKFOHDQLQJRItypes of print head cleaning:DOOSULQWKHDGQR]]OHV

A new print head unit needs to be cleaned to ensure the best possible print quality. Also, you must perform a thorough cleaning if you insert the ink tanks in the wrong slots or if quick cleaning does not solve your print quality problems. This procedure takes about three minutes.

Quick cleaning of all nozzles

Use this method to improve print quality. This cleaning takes about two

zminutes.

Custom cleaning of selective print head nozzles

Use this method to clean the print head nozzles of a new ink tank or if one color is not printing as clearly as you think it should. This cleaning takes

￿￿￿0DLQWDLQLQJWKHabout3ULQWHUone minute.

Chapter 4

Page 54
Image 54
Canon BJC-620 user manual OHDQLQJWKH3ULQW+HDG8QLW, Custom cleaning of selective print head nozzles