Abstract: A system for coating printing materials with coating fluids and a method for operating the system include, in a first step, coating printing material with a first coating fluid using a coating device of the system and keeping a first feed device of the system connected to the coating device for feeding the first coating fluid to the coating device using the first feed device. In a second step following the first step, printing material is coated with a second coating fluid using the coating device and a second feed device of the system is kept connected to the coating device for feeding the second coating fluid to the coating device using the second feed device. In a third step carried out after the first step and, at least to some extent, during the second step, the first feed device is flushed through with a cleaning fluid.

Abstract: A system for coating a printing material with a fluid includes a printing press. The printing press includes a metering apparatus for metering the fluid, which is disposed within the printing press, an intermediate storage container for the intermediate storage of the fluid, which is disposed within the printing press, and a first delivery pump for delivering the fluid from the intermediate storage container to the metering apparatus, which first delivery pump is disposed within the printing press. The metering apparatus, the intermediate storage container and the first delivery pump together form a circuit. A supply storage container stores the fluid and a second delivery pump delivers the fluid from the supply storage container to the intermediate storage container.

Abstract: A system for coating printing materials with coating fluids and a method for operating the system include, in a first step, coating printing material with a first coating fluid using a coating device of the system and keeping a first feed device of the system connected to the coating device for feeding the first coating fluid to the coating device using the first feed device. In a second step following the first step, printing material is coated with a second coating fluid using the coating device and a second feed device of the system is kept connected to the coating device for feeding the second coating fluid to the coating device using the second feed device. In a third step carried out after the first step and, at least to some extent, during the second step, the first feed device is flushed through with a cleaning fluid.

Abstract: A system for coating a printing material with a fluid includes a printing press. The printing press includes a metering apparatus for metering the fluid, which is disposed within the printing press, an intermediate storage container for the intermediate storage of the fluid, which is disposed within the printing press, and a first delivery pump for delivering the fluid from the intermediate storage container to the metering apparatus, which first delivery pump is disposed within the printing press. The metering apparatus, the intermediate storage container and the first delivery pump together form a circuit. A supply storage container stores the fluid and a second delivery pump delivers the fluid from the supply storage container to the intermediate storage container.

Abstract: In a method for controlling the temperature of a first printing unit by way of a temperature control medium, the temperature control medium used is a dampening solution from a second printing unit.

Abstract: In a method for controlling the temperature of a first printing unit by way of a temperature control medium, the temperature control medium used is a dampening solution from a second printing unit.

Abstract: A printing press includes a cylinder, rollers each being selectively displaceable into an active position on the cylinder, a roller magazine for the rollers, and a protective cover for the roller magazine. The protective cover is mounted so as to be adjustable movably between the roller magazine and a respective one of the rollers that has been displaced into the active position.

Abstract: A coating system for coating print carriers includes at least one pump, at least one selection valve, a first metering device and a second metering device. The first metering device and the second metering device are constructed differently from one another with respect to metering principles thereof. The pump and the selection valve are assembled into a modular supply unit constructed so as to be compatible both with the first and with the second metering device. A coating machine, such as a printing or varnishing machine which includes the coating system, is also provided.

Abstract: A pressing device for a printing press or varnishing machine includes a pressing roller for rolling a cylinder packing or dressing onto a circumferential surface of a cylinder, and a finger protection device including a first flap and a second flap connected to the first flap via a swivel joint. The first flap is formed as a pressing element for pressing the cylinder packing on the cylinder. The first flap, in a protective position thereof, covers an inlet wedge or pocket jointly formed by the pressing roller and the cylinder. A printing press or varnishing machine having the pressing device is also provided.

Abstract: A rotary printing machine includes a first gearwheel, a second gearwheel, and a setting device for selectively adjusting the second gearwheel into a first position, in which the gearwheels are coupled to one another, and into a second position, in which the gearwheels are uncoupled from one another. The printing machine includes a traction mechanism for securing a staggered-teeth rotary-angle position of the second gearwheel relative to the first gearwheel when the second gearwheel is adjusted into the second position, and a first tension element for tensioning a rotatably arranged traction means of the traction mechanism. The first tension element is loaded by a spring. The traction means is assigned a second tension element, and in the second tension element is mounted so to be a selectively adjustable into a first switching position and a second switching position.

Abstract: A printing press includes a cylinder, rollers each being selectively displaceable into an active position on the cylinder, a roller magazine for the rollers, and a protective cover for the roller magazine. The protective cover is mounted so as to be adjustable movably between the roller magazine and a respective one of the rollers that has been displaced into the active position.

Abstract: A pressing device for a printing press or varnishing machine includes a pressing roller for rolling a cylinder packing or dressing onto a circumferential surface of a cylinder, and a finger protection device including a first flap and a second flap connected to the first flap via a swivel joint. The first flap is formed as a pressing element for pressing the cylinder packing on the cylinder. The first flap, in a protective position thereof, covers an inlet wedge or pocket jointly formed by the pressing roller and the cylinder. A printing press or varnishing machine having the pressing device is also provided.

Abstract: A coating system for coating print carriers includes at least one pump, at least one selection valve, a first metering device and a second metering device. The first metering device and the second metering device are constructed differently from one another with respect to metering principles thereof. The pump and the selection valve are assembled into a modular supply unit constructed so as to be compatible both with the first and with the second metering device. A coating machine, such as a printing or varnishing machine which includes the coating system, is also provided.

Abstract: A rotary printing machine includes a first gearwheel, a second gearwheel, and a setting device for selectively adjusting the second gearwheel into a first position, in which the gearwheels are coupled to one another, and into a second position, in which the gearwheels are uncoupled from one another. The printing machine includes a traction mechanism for securing a staggered-teeth rotary-angle position of the second gearwheel relative to the first gearwheel when the second gearwheel is adjusted into the second position, and a first tension element for tensioning a rotatably arranged traction means of the traction mechanism. The first tension element is loaded by a spring. The traction means is assigned a second tension element, and in the second tension element is mounted so to be a selectively adjustable into a first switching position and a second switching position.

Abstract: A guard provided on a printing machine, the guard safeguarding perpendicularly a printing unit/coating unit, on both sides thereof, between the side frames and covering horizontally an upper area. Parts of the guard being mounted, on both sides thereof, on swivel arms and are liftable in an opened position, with a spring element supporting this motion such that the side parts may be lifted from a closed position independently of each other, with the upper part of the guard being lifted as well.