Patent ID: 7325494
Filing Date: 2008-02-05
Classification: B41F

Abstract:
1. A sheet convey apparatus for a sheet-fed offset rotary printing press with a convertible mechanism, comprising: sheet holding means for swinging between a first position to receive a sheet from a first sheet holding member on an upstream side in a sheet convey direction and a second position to transfer the sheet to a second sheet holding member on a downstream side in the sheet convey direction; and a pivotal shaft which extends in a widthwise direction of the sheet and pivots together with said sheet holding means, wherein a position of a rotating shaft axis at an intermediate portion of said pivotal shaft is set within a range of an angle which is formed by a line that connects rotating shaft axes at two ends of said pivotal shaft and a sheet holding position of said sheet holding means at the first position and a line that connects the rotating shaft axes at said two ends of said pivotal shaft and a sheet holding position of said sheet holding means at the second position, wherein said position of said rotating shaft axis at said intermediate portion of said pivotal shaft is offset with respect to a position of rotating shaft axes at two ends of said pivotal shaft, wherein, when said first sheet holding means swings between the first position and the second position, the position of the rotating shaft axis at the intermediate portion of said pivotal shaft and the position of the rotating shaft axes at two ends of said pivotal shaft do not change with regard to each other.