Printing – Rolling contact machines – Rotary
Reexamination Certificate
2007-10-23
2007-10-23
Yan, Ren (Department: 2854)
Printing
Rolling contact machines
Rotary
C271S186000
Reexamination Certificate
active
11291182
ABSTRACT:
A sheet-fed offset rotary printing press with a convertible press mechanism includes a chucking cylinder, convertible cylinder, grippers, and air nozzles and blowing ports. The chucking cylinder conveys a sheet by holding its leading edge. The convertible cylinder is arranged downstream of the chucking cylinder in a sheet convey direction and holds a trailing edge of the sheet being conveyed by the chucking cylinder. The grippers cause the convertible cylinder to hold the sheet in a turned state when the sheet is to be transferred from the chucking cylinder to the convertible cylinder. The air nozzles and blowing ports are arranged at different heights on outer sides of two ends in a widthwise direction of the sheet, and blow air toward a center in the widthwise direction of the sheet which is turned over by the grippers, so as to separate the sheet from the chucking cylinder.
REFERENCES:
patent: 5156090 (1992-10-01), Wirz
patent: 5413040 (1995-05-01), Sugiyama et al.
patent: 5706726 (1998-01-01), Stephan
patent: 6470798 (2002-10-01), Hiwatashi et al.
patent: 7207265 (2007-04-01), Helmstadter
patent: 2003/0121433 (2003-07-01), Helmstadter et al.
Inoue Seiichiro
Maruyama Shigeru
Blakely & Sokoloff, Taylor & Zafman
Komori Corporation
Yan Ren
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