Sheet folding device

Abstract

Abstract PURPOSE:To make it possible to fold a large sheet with a small size device for folding a large size sheet such as a blue print copy or the like, by forming fold lines in the blue print copy with the use of a pair of drive rollers, a loop forming roller and a swingable operating roller. CONSTITUTION:A large size sheet S such as a blue print copy or the like to be folded, is fed into a folding roller device 2 through a guide mechanism 4 by means of a sheet supply device 1, and is conveyed by a predetermined distance, being held between a pair of drive rollers 20, 21. An operating roller 23 which has made contact with the drive roller 21 is made into contact with a loop forming roller 22 that is driven to be rotated by means of the drive roller 20 so that a loop R is formed in the sheet. Then, the operating roller 23 is again made into contact with the drive roller 21 to allow the loop R to project through between both rollers 21, 23, and in this condition both drive rollers 20, 21 are reversed to form a fold line F. Then both drive rollers 20, 21 are normally rotated to feed out the sheet S. Thus, it is possible to fold a large size sheet with the use of even a small size device.

Inventors

• 👤 Yoshinori Hashida
• 👤 橋田　喜典
• 👤 Hideo Takaoka
• 👤 高岡　秀夫

Bibliographic Details