Patent ID: 7608034

Claim:
Apparatus of conditioning an edge of a single sheet of paper comprising: a first folding member which includes first and second folding surfaces disposed at a first intermediate angle of less than 120 degrees, with the first and second folding surfaces meeting at a first location; a second folding member which includes third and fourth folding surfaces disposed at a second intermediate angle of less than 120 degrees, with the third and fourth folding surfaces meeting at a second location; first apparatus configured to fold a section of the sheet which extends to the edge of the sheet over the first folding member in a first folding direction so that a first bending line is formed in the sheet at the first location along substantially a full length of the edge of the sheet, with the first apparatus in combination with the first and second folding members forming part of a sheet positioning mechanism so that the first bending line is at a distance from the edge of the sheet less than twenty times a thickness of the sheet, and with the sheet being folded at the first intermediate angle and further configured to fold a section of the sheet which extends to the edge of the sheet over the second folding member in a second folding direction, opposite the first folding direction, so that a second bending line is formed in the sheet at said second location along substantially a full length of the edge of the sheet, with the second bending line being a distance from the edge of the sheet less than twenty times the thickness of the sheet, and with the sheet being folded at the second intermediate angle.