Hi kendot9692,
When you cannot read the print of your P23-DH 2, you should replace the ink roller. The P23-DH 2 uses the CP-13 ink roller. The keys on your P23-DH 2 are not designed to be cleaned.
If this is a time-sensitive matter, our US-based technical support team is standing by, ready to help 24/7 via Email at http://Canon.us/EmailCF or by phone at 1-800-OK-CANON (1-800-652-2666) weekdays between 8 AM and 8 PM ET (5 AM to 5 PM PT).
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