Systems and methods for providing remote approval of an image for printing are provided. One system includes a processing circuit in communication with an image capturing device that is configured to capture an image of a printed product. The processing circuit is configured to process the captured image into a processed image accurate to within a tolerance in a color space to indicate the visual appearance of one or more colors. The color space is a standardized color space, such as sRGB or CIELAB. The processing circuit is further configured to transmit the processed image to a display located remote from the image capturing device and to receive an input signal from a remote input device to allow a user to approve or reject the displayed processed image for printing on a print device.

Correction values (1-n) according to image area ratios in ranges of a printing plate of a preceding print job corresponding to ink fountain keys (4-1-4-n) are obtained. Opening amounts (1b-nb) of the ink fountain keys (4-1-4-n) corresponding to the image of the printing plate (7) of a next print job are corrected by correction values (1-n) to obtain corrected opening amounts (1b-nb). In a state in which ink in an ink roller group (6) has been decreased by scraping and removing it by an ink scraper blade (15) and in a state in which the opening amounts of the ink fountain keys (4-1-4-n ) have been set to the corrected opening amounts (1b-nb), an ink film thickness distribution corresponding to the image of the printing plate of the next print job is formed on the ink roller group (6).

There is described an inking apparatus of a printing press, in particular an offset or letterpress printing press, comprising at least one ink duct (11, 12) with an ink supply roller (13, 14), an ink roller train (30) comprising at least one inking roller (31) which receives ink from the at least one ink duct (11, 12), and at least one vibrator roller (15, 16) interposed between the ink supply roller (13, 4) and the inking roller (31), which vibrator roller (15, 16) is swung back and forth between the ink supply roller (13, 14) and the inking roller (31) and intermittently transfers ink from the ink supply roller (13, 14) to the inking roller (31). A circumference of the vibrator roller (15, 16) exhibits an ink-transfer 10 structure (15a, 16a) which reflects a desired inking profile of a printing plate to be inked by the inking apparatus and is designed to modulate a quantity of ink transferred by the vibrator roller (15, 16). The ink-transfer structure (15a, 16a) on the circumference of the vibrator roller (15, 16) is subdivided, in a circumferential direction (y) of the vibrator roller (15, 16), into an integer number 1 (r) of individual ink-transfer portions (15b, 16b) that are repeated with a determined circumferential period (?y) in the circumferential direction (y), each individual ink-transfer portion (15b, 16b) reflecting the desired inking profile of the printing plate to be inked by the inking apparatus. A contact length (CL) over which the vibrator roller (15, 16) runs in contact with the ink supply roller (13, 204) is equivalent to the determined circumferential period (?y) of the individual ink-transfer portions (15b, 16b) or to an integer multiple of the determined circumferential period (?y) of the individual ink-transfer portions (15b, 16b).

There is described an inking apparatus of a printing press, in particular an offset or letterpress printing press, comprising at least one ink duct (11, 12) with an ink supply roller (13, 14), an ink roller train (30) comprising at least one inking roller (31) which receives ink from the at least one ink duct (11, 12), and at least one vibrator roller (15, 16) interposed between the ink supply roller (13, 4) and the inking roller (31), which vibrator roller (15, 16) is swung back and forth between the ink supply roller (13, 14) and the inking roller (31) and intermittently transfers ink from the ink supply roller (13, 14) to the inking roller (31). A circumference of the vibrator roller (15, 16) exhibits an ink-transfer 10 structure (15a, 16a) which reflects a desired inking profile of a printing plate to be inked by the inking apparatus and is designed to modulate a quantity of ink transferred by the vibrator roller (15, 16). The ink-transfer structure (15a, 16a) on the circumference of the vibrator roller (15, 16) is subdivided, in a circumferential direction (y) of the vibrator roller (15, 16), into an integer number 1 (r) of individual ink-transfer portions (15b, 16b) that are repeated with a determined circumferential period (?y) in the circumferential direction (y), each individual ink-transfer portion (15b, 16b) reflecting the desired inking profile of the printing plate to be inked by the inking apparatus. A contact length (CL) over which the vibrator roller (15, 16) runs in contact with the ink supply roller (13, 204) is equivalent to the determined circumferential period (?y) of the individual ink-transfer portions (15b, 16b) or to an integer multiple of the determined circumferential period (?y) of the individual ink-transfer portions (15b, 16b).

The present invention discloses a digital ink duct for a printing press, comprising an ink tank for storing ink, a main ink pipe that communicates with the ink tank, at least one metering-type ink delivery device, ink delivery pipes, a controller and a signal acquisition device. In the present invention, high-accuracy, metering-type ink delivery devices are arranged in a queue to form a digital ink duct which replaces the traditional ink duct and supplies ink for the ink zones. The present invention can perform accurate adjustment in real time, is high in automation and digitalization degree, and can realize one-way ink delivery and avoid ink return.

The present disclosure relates to an apparatus for flexographic printing of a web of packaging material with printing ink and an inlet module for a flexographic printing apparatus. The apparatus may include an ink pan or chamber, and an anilox roll rotary at least partly inside the ink chamber for picking up and transferring printing ink from the ink chamber to an impression cylinder which is rotary in transfer contact with the anilox roll. The ink chamber may be elongated and extend axially along the anilox roll, the ink chamber having a first axial end and a second axial end opposite the first axial end. The apparatus may further include a first printing ink inlet arranged at the first axial end and a second printing ink inlet arranged at the second axial end.

The present disclosure relates to an apparatus for flexographic printing of a web of packaging material with printing ink and an inlet module for a flexographic printing apparatus. The apparatus may include an ink pan or chamber, and an anilox roll rotary at least partly inside the ink chamber for picking up and transferring printing ink from the ink chamber to an impression cylinder which is rotary in transfer contact with the anilox roll. The ink chamber may be elongated and extend axially along the anilox roll, the ink chamber having a first axial end and a second axial end opposite the first axial end. The apparatus may further include a first printing ink inlet arranged at the first axial end and a second printing ink inlet arranged at the second axial end.

Systems and methods for providing remote approval of an image for printing are provided. One system includes a processing circuit in communication with an image capturing device that is configured to capture an image of a printed product. The processing circuit is configured to process the captured image into a processed image accurate to within a tolerance in a color space to indicate the visual appearance of one or more colors. The color space is a standardized color space, such as sRGB or CIELAB. The processing circuit is further configured to transmit the processed image to a display located remote from the image capturing device and to receive an input signal from a remote input device to allow a user to approve or reject the displayed processed image for printing on a print device.

A fluid distribution device, for applying a fluid onto a transfer roller, comprises includes an elongated chamber, at least one inlet for letting a fluid into the chamber, a longitudinal opening extending in the axial direction and adapted to face a transfer roller to allow fluid to exit the chamber and contact the transfer roller, and at least one wiper blade extending along at least a portion of the longitudinal opening. The chamber includes, at each of the two axial ends of the chamber, a wall separating the chamber from a cavity. The wall has a wall surface arranged to face the transfer roller when the device is in use. The wall is dimensioned so that the wall surface will be distanced from the transfer roller when the device is in use, so as to allow fluid to be present in a gap between the wall surface and the transfer roller.

A fluid distribution device, for applying a fluid onto a transfer roller, comprises includes an elongated chamber, at least one inlet for letting a fluid into the chamber, a longitudinal opening extending in the axial direction and adapted to face a transfer roller to allow fluid to exit the chamber and contact the transfer roller, and at least one wiper blade extending along at least a portion of the longitudinal opening. The chamber includes, at each of the two axial ends of the chamber, a wall separating the chamber from a cavity. The wall has a wall surface arranged to face the transfer roller when the device is in use. The wall is dimensioned so that the wall surface will be distanced from the transfer roller when the device is in use, so as to allow fluid to be present in a gap between the wall surface and the transfer roller.