| http://www.w3.org/ns/prov#value | - Use of the cover door 350 advantageously prevents the target 370 from becoming contaminated with inkjet aerosol, dust, debris and other contaminants, by only allowing the target 370 to be viewable during a reading, and otherwise being covered during printing as well as during periods of printer inactivity when the printheads 310-315 are sealed by caps 340-345.
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