Patent ID: 6318253
Filing Date: 2001-11-20
Classification: B65H

Abstract:
A document feeder, comprising:a transfer path for allowing a document to pass therethrough,transferring means situated along the transfer path for transferring the document along the transfer path,stamping means situated near the transfer path for impressing a mark on a surface of the document transferred by the transferring means,setting means connected to the stamping means for setting a density of the mark on the document impressed by the stamping means so that the mark impressed on the document becomes substantially constant in the density when it is used, said setting means including at least one of a setting panel for setting a desired density of the mark on the document, and counter means for counting a number of usage of the stamping means, said setting panel setting in advance at least one of an impressing force and an impressing duration of the stamping means relative to the document, said counter means automatically setting at least one of the impressing force and the impressing duration of the stamping means relative to the document based on the number of usage of the stamping means, anddriving means connected to the transfer means for controlling a transferring speed of the document by the transferring means in accordance with density information set by the setting means.