Automatic document feeder and automatic document feeding method

Abstract

An automatic document feeder includes a document stacker to stack a document; a sheet feeder; a conveyor; a detector; and circuitry. The sheet feeder feeds the document from the document stacker includes a pickup roller; and a pressure member to apply a pressure to press the pickup roller against the document on the document stacker. The conveyor conveys the document fed by the sheet feeder in a conveyance direction. The detector detects document information including at least a type of the document on the document stacker. The circuitry is configured to determine whether the type of the document on the document stacker is a thermally-developable document based on the document information detected by the detector, and control the pressure member to change the pressure applied to the pickup roller based on a determination of the type of the document on the document stacker.

Dependencies are inferred from the claim text.