Patent ID: 8656834

Claim:
An exchangeable cylinder type rotary press including: a printing unit having an exchange cylinder unit removably mounted thereon, the exchange cylinder unit comprising a plurality of exchangeable rotary cylinders of an identical peripheral length, and the rotary cylinders having a fixed combination for printing; and a rotary printing paper feed means by which rotary printing paper to be printed in the printing unit is driven to travel, wherein: the peripheral length of each of said rotary cylinders in the exchange cylinder unit, is a length to be set according to a top-bottom length of a print to be made; the exchange cylinder unit is configured with one of an inch standard and a millimeter standard, the rotary press being configured to permit printing of a print with the other of the inch standard and millimeter standard, and said rotary cylinders of one of inch standard and millimeter standard are provided with driven gears of the other of inch standard and millimeter standard, respectively; a profile-shifted gear is used as at least one of a plurality of said driven gears, and each of the plural driven gears having an identical number of teeth so that the driven gears can be engaged with one another while positioning said rotary cylinders in a rotational contact with one another; said printing unit is provided with a driving gear adapted to be disengageably in engagement with one of said driven gears in said exchange cylinder unit for driving said rotary cylinders in the exchange cylinder unit, said driving gear being provided independently of said rotary printing paper feed means; and said driving gear and said plural driven gears constitute a single-row gear train for driving the rotary cylinders having peripheral lengths set as desired; and a motor whose rotation is controllable and is coupled to said driving gear, wherein said profile-shifted gear enables printing of a print of one of inch standard and millimeter standard with the exchange cylinder unit provided with driven gears of the other of inch standard and millimeter standard and changing the peripheral lengths of said rotary cylinders, unrestrained from a gear standard of the gear train.