In-feed paper buckle control apparatus

A cut-sheet feeding apparatus for use with an independently operable printing machine having a platen and first and second pressure feed roller means positioned in rolling contact with the periphery of said platen and separated from each other by a predetermined distance around the periphery of said platen, said cut-sheet feeding apparatus comprising:

• sheet-supply means for storing a plurality of sheet members,
• sheet-feeding means operatively positioned for feeding sheet members in singular sequence from said sheet-supply means toward said platen,
• sheet guide means operatively positioned to guide a leading edge of each sheet member, as it exits said sheet-feeding means, to a nip formed by the platen and the first pressure feed roller means, said sheet-guide means including buckle-guide means for forming a buckle of predetermined length and shape into each sheet member after each sheet member has registered into said nip, said predetermined length of buckle being greater than the distance measured on the periphery of the platen between the first and second pressure feed roller means,
• sensing means operatively positioned with respect to the buckle-guide means to sense the presence of the buckle and operatively connected to the sheet-feeding means to stop operation thereof at a predetermined time.