The wind velocity of the air injected by the air-blow dryers 7a, 7b is lower than that of the air injected by the air-blow dryers 7c, 7d. That is, since a large amount of moisture remains on the front surface M1 of the printing medium M passing through the air-blow dryers 7a, 7b, the printing medium M is dried while the flow of the aqueous inks is suppressed by injecting the air at a lower wind velocity. On the other hand, the moisture decreases on the front surface M1 of the printing medium M dried by the air-blow dryers 7a, 7b and the fluidity of the aqueous inks is reduced. Accordingly, the drying of the printing medium M is promoted by injecting the air at a high wind velocity to the printing medium M passing through the air-blow dryers 7c, 7d.

The present invention relates to a dryer for treating a moving printing web in a rotary printing press with gas, having a nozzle body. The dryer according to the invention is characterized in that the nozzle body has at least one opening for the exit of heated gas and has at least one opening for recirculating the cooled gas.

A printing apparatus is provided that has: a printing part that performs printing by depositing a recording composition on the surface of a printing medium; a plasma generation part that is constituted by a plasma generation chamber having an introduction port for introducing a gaseous flow of plasma material gas to the interior, wherein the plasma material gas is converted to a plasma in the interior to form a gaseous flow of plasma-modified gas, as well as a plasma release port for releasing the gaseous flow to the exterior; and a plasma irradiation part that brings a gaseous flow released from the plasma release port, which contains the plasma-modified gas and/or plasma-quenched gas formed therefrom, in contact with the surface of the printing medium that has been printed at the printing part. The printing apparatus can fully dry/cure a printed recording composition.

A printing apparatus is provided that has: a printing part that performs printing by depositing a recording composition on the surface of a printing medium; a plasma generation part that is constituted by a plasma generation chamber having an introduction port for introducing a gaseous flow of plasma material gas to the interior, wherein the plasma material gas is converted to a plasma in the interior to form a gaseous flow of plasma-modified gas, as well as a plasma release port for releasing the gaseous flow to the exterior; and a plasma irradiation part that brings a gaseous flow released from the plasma release port, which contains the plasma-modified gas and/or plasma-quenched gas formed therefrom, in contact with the surface of the printing medium that has been printed at the printing part. The printing apparatus can fully dry/cure a printed recording composition.

The wind velocity of the air injected by the air-blow dryers 7a, 7b is lower than that of the air injected by the air-blow dryers 7c, 7d. That is, since a large amount of moisture remains on the front surface M1 of the printing medium M passing through the air-blow dryers 7a, 7b, the printing medium M is dried while the flow of the aqueous inks is suppressed by injecting the air at a lower wind velocity. On the other hand, the moisture decreases on the front surface M1 of the printing medium M dried by the air-blow dryers 7a, 7b and the fluidity of the aqueous inks is reduced. Accordingly, the drying of the printing medium M is promoted by injecting the air at a high wind velocity to the printing medium M passing through the air-blow dryers 7c, 7d.

The present invention relates to a dryer for treating a moving printing web in a rotary printing press with gas, having a nozzle body. The dryer according to the invention is characterized in that the nozzle body has at least one opening for the exit of heated gas and has at least one opening for recirculating the cooled gas.

A method and a device for printing and drying a plastic film web, especially a polypropylene (PP), polystyrene (PS), or polyethylene (PE) film web, employ several offset printing mechanisms for printing the film web with different ink applications and at least one flame drying station. The device also includes a drawing roller, which is arranged between a last printing mechanism and the at least one flame drying station, contacts the unprinted surface of the film web, and applies tension to the film web.

A method and a device for printing and drying a plastic film web, especially a polypropylene (PP), polystyrene (PS), or polyethylene (PE) film web, employ several offset printing mechanisms for printing the film web with different ink applications and at least one flame drying station. The device also includes a drawing roller, which is arranged between a last printing mechanism and the at least one flame drying station, contacts the unprinted surface of the film web, and applies tension to the film web.

A device and method for printing and drying a plastic film web is provided, especially a device and method for printing and drying a polypropylene, polystyrene or polyethylene film web. The device can include several offset printing mechanisms for printing the film web with different ink applications and at least one flame drying station, characterized by a drawing roller, which is arranged between a last printing mechanism and the at least one flame drying station, and which can contact the unprinted surface of the film web, and apply tension to the film web.