HP Deskjet 3745 Color Inkjet Printer - Manual (Page 73)

Caution: Do not touch the print cartridge ink nozzles or copper contacts.
Touching these parts will result in clogs, ink failure, and bad electrical
connections.
A Warning indicates possible harm to you or to others. For example:
Warning: Keep both new and used print cartridges out of the reach of
children.
A Note indicates that additional information is provided. For example:
Note: For great results use HP products.
HP Deskjet 3740 series printer
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