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Excelagraphix 4200/4800

What is the smallest paper size supported by my product?
What can I do to print smaller media sizes?
What is the largest paper size supported by my product?
How many nozzles does each print head have?
How do you soak the print heads?
What humidity is required for good print quality?
Should I turn off the machine overnight or leave it on?
What should I do if I experience print quality issues?