Canon BJC-620 User Manual

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Use a soft cloth moistened with water. 

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Clean any smudges or dust. 

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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 three types of print head cleaning:

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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.

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Quick cleaning of all nozzles

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

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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 
about one minute.

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Chapter 4