Abstract: A sheet repository having multiple trays and including a fan supported in a housing for receiving ambient air from outside the housing, a heating device within the housing for raising the temperature of the air conveyed by the fan, and a duct system at the outlet of the heating device for channeling the heated air. The duct system includes outlets for directing heated air onto the selected trays, and a humidity sensor provides suitable signals to shut off the heating device in order that the sheets in the trays are maintained at a uniform reduced moisture content.

Abstract: A fluorescent light source includes a fluorescent lamp, lamp bases attached to opposite ends of the fluorescent lamp, and an electrically insulating substrate connected to the fluorescent lamp. A heating element is positioned on the fluorescent lamp, and a first and second pair of power traces are formed on the electrically insulating substrate. The first pair of power traces are connected to the heating element to provide power thereto. The second pair of power traces are connected to a pair of electrical conductors that provide power to the fluorescent lamp. This fluorescent lamp can be used in a replaceable fluorescent light source unit for a document scanner. The replaceable fluorescent light source unit includes a housing, lamp base receiving members attached to the housing, and registration notches to properly align the fluorescent lamp.