摘要:
The machine (1) comprises: a stationary frame structure (2), wherein support elements (8-12) are provided for supporting an article (A) on which an image (I) is to be printed; a thermal transfer assembly (20) which is vertically movable relative to the frame structure (2), above the support elements (8-12), between a raised rest position and a lowered working position, and includes a transfer pad (21) having an active surface (21a) which is heated in operation; and supply and guide devices (23-36) arranged to advance, along a predetermined path extending in part between the active surface (21a) of the transfer pad (21) and the support elements (8-12), a flexible printing ribbon (N) which on a side thereof carries, at predetermined intervals, images (I) formed of a thermally transferable ink. The machine (1) further comprises a position sensor (80) arranged to provide electrical signals indicative of the vertical position of the transfer pad (21), and a control unit (14) arranged to carry out a learning phase wherein the control unit (14) causes a descent run of the thermal transfer assembly (20), until the transfer pad (21) is brought into engagement with an article (A) of a predetermined type positioned on the support elements (8-12), and through the position sensor (80) detects and then stores reference data characterizing such descent run, and a subsequent printing phase, wherein the control unit (14) causes a subsequent descent run of the thermal transfer assembly (20) towards and up to an article (A) of the same type positioned on the support elements (8-12), detecting and comparing with said reference data the corresponding data that characterize the current descent run, and stopping the printing phase when the comparison between these data is indicative of an anomaly in the current descent run.
摘要:
A gas collection device of a printing press includes an organic compound treatment system (33) including a gas chamber (34). The device includes a cover (3) configured to cover a print unit (2) of a printing press. The device includes a gas transfer device (4) configured to suck a gas of a volatile organic compound produced in the print unit (2) from the inside of the cover 3 and transfer the gas to the gas chamber (34). It is possible to provide a gas collection device of a printing press, which can prevent a work environment in which the printing press is installed from being deteriorated by the gas of the volatile organic compound.
摘要:
This invention discloses a numbering and imprinting machine including a number cylinder, moving inker, first cleaning device, second cleaning device, inker position detector, and control device. The number cylinder includes at least one numbering device. The moving inker includes a number inker which supplies ink onto the number cylinder, and is movable between a printing position at which the number inker comes into contact with the number cylinder, and a retraction position at which the number inker separates from the number cylinder. The first cleaning device cleans the number cylinder. The second cleaning device cleans the number inker. The inker position detector detects the position of the moving inker. When the inker position detector detects that the moving inker is set at the printing position, the control device rotates the number cylinder, drives the number inker and controls cleaning operations by the first cleaning device and the second cleaning device.
摘要:
The present invention relates to an image evaluating apparatus, an image evaluating method, and a non-transitory storage medium. In the present invention, two-dimensional relative positions between the image formation position of one color plate of a plurality of color plates and the image formation positions of other color plates are calculated based on known positional information of registration marks formed by the color plates and positional information of the registration marks that are actually formed as images on a recording medium. A position expressing image is generated which represents the calculated relative positions by way of two-dimensional positional coordinates.
摘要:
This invention discloses a numbering and imprinting machine including an impression cylinder, a stamp cylinder, a first printing cylinder, a second printing cylinder, and a moving inker which includes a first ink supply device and second ink supply device. A first space is formed between the moving inker, which is set at a retraction position, and the first and second printing cylinders so as to permit entrance of the operator into it. A second space is formed between the stamp cylinder and the first printing cylinder to permit the operator who has entered the first space to access the impression cylinder.
摘要:
A method for changing printing plates in rotary printing presses, including a plurality of printing units each having a plate cylinder and a dedicated drive for driving the plate cylinder independently of an associated blanket cylinder in a respective printing unit, includes moving the respective blanket cylinder at a somewhat higher circumferential speed than the associated plate cylinder while conveying one or more printing plates out of the printing unit, at least in one operating mode, during a plate changing operation. A printing press and a controller are also provided.