Patent ID: 7334522
Filing Date: 2008-02-26
Classification: B41F

Abstract:
1. An apparatus in a web-fed rotary press, comprising: a form cylinder; and a clamping device for fastening at least one printing plate on the form cylinder, wherein the clamping device is threadedly connected to the form cylinder and includes a single wedge-shaped clamping element and a spring actuator disposed around the clamping device and extending in a radial direction of the form cylinder and acting on the wedge-shaped clamping element, wherein the clamping device is radially positioned in a clamping channel defined by the form cylinder which conforms to a first canted side of the wedge-shaped clamping element on a first side of the channel and a second radially-extending side of the wedge-shaped clamping element on a second side of the channel; wherein a first end of a printing plate engages between the first canted side of the wedge-shaped clamping element and the form cylinder and wherein a second end of the printing plate engages between the second radially-extending side of the wedge-shaped clamping element and the form cylinder; and wherein, as seen in a circumferential direction, the clamping channel of the form cylinder has an effective clamping-channel width of at most 7 mm.