摘要:
A method of printing composition(s) on a web is disclosed. The method includes the steps of advancing the web and printing a plurality of composition sites on the web. The method further includes the step of forming one or more discontinuities in the web. The discontinuities correspond to the printed composition sites.
摘要:
A method of printing composition(s) on a web is disclosed. The method includes the steps of advancing the web and printing a plurality of composition sites on the web. The method further includes the step of forming one or more discontinuities in the web. The discontinuities correspond to the printed composition sites.
摘要:
The present invention refers to a plant (1) for printing, particularly for digitally printing, a sheet fibrous material (T), said printing plant (1) comprising: a conveyor belt (2) configured for temporarily receiving in contact a first side (T1) of the sheet fibrous material (T) and guiding this latter in the movement along an advancement direction (A); one printing station (6) adapted to ink-print at least part of a second side (T2) of the sheet fibrous material (T), opposite to the first side (T1), one treating station (10) of the sheet fibrous material (T) configured for placing on a side of the sheet fibrous material (T) a treatment foam comprising at least one among: an anti-migration agent, a pH control agent, a hydrotropic agent. The present invention also refers to a process of printing of sheet fibrous material.
摘要:
A sheet-fed printing press has at least one coating assembly configured as a non-impact coating assembly. The sheet-fed printing press has at least one transport belt which extends, having at least one transport section of a circular path thereto, parallel to a transport direction along a partial region of a transport path provided for a sheet. At least one coating location of the at least one coating assembly is arranged along the transport section of the at least one transport belt. At least one printing head is arranged connected to at least one first frame of the at least one coating assembly. The at least one transport belt is arranged, connected to at least one second frame, via at least one deflection device and at least one radial bearing. The at least one first frame, apart from at least one installation surface which is different from the at least one first frame and the at least one second frame, is arranged in contact to the second frame at most via flexible connections.
摘要:
A non-contact web guide includes a wall having a curved exterior surface and a hollow interior containing a pressurized liquid. A first row of liquid ejection holes is provided in proximity to the web guide entry position having axes that are inclined toward a downstream direction, and a second row of liquid ejection holes is provided in proximity to the web guide exit position having axes that are inclined toward an upstream direction. An intermediate array of liquid ejection holes is optionally provided. The pressurized liquid flows through the liquid ejection holes to force the web of media away from the bearing surface of the web guide. This configuration of liquid ejection holes provides the advantage that stable web guidance is achieved at low liquid flow rates.
摘要:
A printing press is provided which includes a printing unit for printing on a web. The printing unit includes a plate cylinder, a blanket cylinder, and an impression cylinder. The press further includes a web displacement bar movable between a first position in which the web displacement bar is spaced apart from a web passing between the blanket cylinder and the impression cylinder, and a second position in which the web displacement bar holds the web in contact with the impression cylinder and spaced apart from the blanket cylinder. A method of operating the press is also provided.
摘要:
A method of printing composition(s) on a web is disclosed. The method includes the steps of advancing the web and printing a plurality of composition sites on the web. The method further includes the step of forming one or more discontinuities in the web. The discontinuities correspond to the printed composition sites.
摘要:
A printing blanket is provided which may include a printable surface ply, a compressible ply, one or more reinforcing fabric plies, and a non-extensible backing layer comprising a polymeric material. The printing blanket has first and seconds ends which are adapted to be inserted into the gap of a printing blanket cylinder, where each of the first and second ends may include a relief area formed by removing or molding a portion of the blanket or by removing or molding a portion of the non-extensible backing layer such that the blanket may be mounted in a wide variety of printing presses using a number of different lock-up mechanisms.
摘要:
A system and method for the overprint on flexible supports are described. In particular, the overprint system 1 comprises a printing unit 2 comprising a rotatable printing cylinder 3, having printing zones at the surface thereof, and first actuating means 14, configured to drive in a controllable manner the printing cylinder 3 rotation. The system further comprises a first reel 5 for unwinding a flexible support 4 to be printed, which has preset zones to be overprinted, and a second reel 8 for rewinding the flexible support 4, once it has been printed. A plurality of winding rolls 7 arranges an unwinding path, for the flexible support 4, comprised between the first 5 and the second 8 reels, and passing through the printing unit 2. The system then comprises second actuation means 20, configured to drive in a controllable manner the flexible support 4 advancement along the unwinding path (upstream of the printing unit 2 in the unwinding direction), and control means 10, configured to control in a coordinated manner both the first actuating means 14 and the second actuation means 20, so as to determine at every moment a correspondence of the preset zones to be overprinted of the flexible support 4 with respective printing zones of the printing cylinder 3.
摘要:
An apparatus for conveying a sheet-formed item from a digital printing unit, the apparatus including an inlet side and an outlet side, and including a set of conveying devices for moving items in a conveying direction and a method for regulating such an apparatus. The apparatus includes a device for aligning an article from one position to another position in relation to one or more reference points, and a device for fixing an item at a given position in relation to a stop. The method includes the steps: detecting an item; receiving and conveying the item; regulating a possible skew position of the item as the item is moved against a stop on the conveying device, where the item is acted on by one speed of the conveyor belt and moved into abutment on the conveying means at a lower speed; and fixing the item in the aligned position.