Abstract: According to one example there is provided an accessory for a printing system. The accessory comprises a cylindrical core on which a web of media may be wound, and a flexible sheet having a first end attached to the core and a second free end opposite the first end having a media connector attached thereto, the media connector to connect a free end of a web of media thereto.

Abstract: In the field of printing technology, non impact printing methods such as inkjet printing may be used to deposit an ink composition onto print media to form an image. An ink composition typically comprises a colorant material and a vehicle, such as an aqueous solution, for delivering the colorant material to the print media. A wide range of such ink compositions is known in the industry. It is also known to use various pre-treatment compositions in combination with ink compositions in order to enhance the quality of a final image. Pre-treatment compositions are often substantially colorless liquid compositions that interact with elements of the ink composition to fix colorant to the print media. Pre-treatment compositions may help to improve image quality for example by reducing image bleeding, edge roughness and other image quality issues.

Abstract: Operation of a printer for printing an image is described herein. It is determined whether ejection of imaging droplets of a print fluid via a set of nozzles for printing an outstanding image portion is sufficient for preventing clogging of the set of nozzles. Upon determining that ejection of imaging droplets for printing the outstanding image portion is sufficient for preventing clogging of the set of nozzles, printing is performed by ejecting only imaging droplets of the print fluid via the set of nozzles. Upon determining that ejection of imaging droplets for printing the outstanding image portion is not sufficient for preventing clogging of the set of nozzles, a servicing procedure is to be executed of to eject purging droplets of the print fluid via the set of nozzles.

Abstract: A drive signal may be determined to drive a printhead to a series of target temperatures during respective portions of a print pass by the printhead. Each of the target temperatures may be the greater of a temperature of the printhead caused by printing a quantity of printing fluid to be printed during the respective portion and a predetermined threshold temperature. A drive signal may be provided to warm the printhead to the series of target temperatures during the respective portions of the print pass.

Abstract: A cleaning module includes an actuator device, a fluid chamber, and a wiper member. The actuator device may enter an activation state based on a movement of at least a portion of the actuator device in response to an engagement with the printhead. The fluid chamber may store and supply fluid to the porous wipe material in response to the activation state of the actuator device. The wiper member may apply pressure to a porous wipe material including the fluid therein to wipe the printhead.

Abstract: A method to control a printer carriage in which the printer carriage is controlled to move along a first axis at a first predetermined speed when a printhead, installed on the printer carriage, is ejecting printing fluid in a print zone. The printer carriage is moveable bidirectionally along the first axis in swaths to enable the printhead to print in the print zone. The printer carriage is also controlled to move along the first axis at a second predetermined speed, higher than the first predetermined speed, when the printhead is not ejecting printing fluid in the print zone.

Abstract: In one example, a print substrate edge holder includes a first part to hold down the edge of a print substrate without covering any part of the substrate in the print zone and a second part overlapping the first part to collect printing fluid dispensed past the edge of the print substrate.

Abstract: A printing device (200) and method for controlling the curing of ink are described. An example printing apparatus has a printing module (230) with at least one printhead for printing a swath of a printed image and a print controller (220) arranged to generate image and print control data for a plurality of swaths. A curing module (270) is arranged to receive, for each of the plurality of one or more swaths, image and print control data and to control, before a printed region of the print medium (250) corresponding to a particular one or more swaths arrives, one or more operating parameters of the curing module (270) based on data values within said image data and printing parameters within said print control data.

Abstract: A method of determining a delay value by an image forming system may include transporting a media along a media transport path by a media transport unit, heating the media by a heating unit, providing a plurality of print passes across the media transport path by a print head assembly, and applying ink to the media to form an image including a plurality of swaths by the print head assembly such that a respective swath is formed on the media corresponding to a respective print pass. The method may also include detecting a temperature of the media by a temperature module to determine whether the detected temperature is outside of a target temperature range, and determining a delay value by a delay determination module in response to a determination that the detected temperature is outside of the target temperature range.

Abstract: A method to control a printer carriage in which the printer carriage is controlled to move along a first axis at a first predetermined speed when a printhead, installed on the printer carriage, is ejecting printing fluid in a print zone. The printer carriage is moveable bidirectionally along the first axis in swaths to enable the printhead to print in the print zone. The printer carriage is also controlled to move along the first axis at a second predetermined speed, higher than the first predetermined speed, when the printhead is not ejecting printing fluid in the print zone.

Abstract: A printer control section arranged to control a printhead, is operable to cause the printhead to: perform a plurality of passes over a swath of a print medium, the plurality of passes including first and second treatment passes; apply treatment to the print medium in each of the treatment passes, the treatment in each treatment pass being applied according to a respective treatment mask, wherein each treatment mask indicates a corresponding set of pixels to which the treatment may be applied in a pass to which the treatment mask is applied, the treatment mask having a weight indicative of the proportion of pixels in the corresponding set of pixels, and the treatment masks of the first and second passes are such that a weight of the first treatment mask is different from a weight of the second treatment mask.

Abstract: In the field of printing technology, non impact printing methods such as inkjet printing may be used to deposit an ink composition onto print media to form an image. An ink composition typically comprises a colourant material and a vehicle, such as an aqueous solution, for delivering the colourant material to the print media. A wide range of such ink compositions is known in the industry. It is also known to use various pre-treatment compositions in combination with ink compositions in order to enhance the quality of a final image. Pre-treatment compositions are often substantially colourless liquid compositions that interact with elements of the ink composition to fix colourant to the print media. Pre-treatment compositions may help to improve image quality for example by reducing image bleeding, edge roughness and other image quality issues.

Abstract: A method to monitor a media roll mounted in a printing apparatus comprises scanning with a sensor an end side of a media roll by displacing the sensor in the radial direction of the roll, detecting the position of a media roll outer edge during said scanning, and determining a dimension of the media roll on the basis of the detected outer edge position.

Abstract: A method of controlling inkjet printing including firing at least one fluid drop from an inkjet printhead at one or more firing frequencies; measuring a parameter of said fired at least one fluid drop to determine a present firing performance of the inkjet printhead at each of the one or more firing frequencies; determining if the present firing performance at any of the one or more firing frequencies is different from a predetermined firing performance; and changing, in accordance with a difference between the present firing performance and the predetermined firing performance, and for at least one of the one or more firing frequencies, a fluid quantity parameter for subsequent fluid drops to be fired by the printhead.

Abstract: A printing apparatus includes a media support assembly, a scanning module, and a control module. The media support assembly may position a respective media portion in a print zone to receive a printing fluid thereon. The scanning module may scan the media portion in the print zone and generate a media shape signal corresponding to a shape of the media portion. The control module may compare the media shape signal to a reference signal to form a resultant comparison and determine a media malfunction event based on the resultant comparison.

Abstract: A method of determining a delay value by an image forming system may include transporting a media along a media transport path by a media transport unit, heating the media by a heating unit, providing a plurality of print passes across the media transport path by a print head assembly, and applying ink to the media to form an image including a plurality of swaths by the print head assembly such that a respective swath is formed on the media corresponding to a respective print pass. The method may also include detecting a temperature of the media by a temperature module to determine whether the detected temperature is outside of a target temperature range, and determining a delay value by a delay determination module in response to a determination that the detected temperature is outside of the target temperature range.

Abstract: According to one example, there is provided a method of controlling a printing system. The method comprises: obtaining a print job to print on a substrate; obtaining a value of a factor material to an undesirable condition occurring; determining a quantity of printing fluid to be deposited on a substrate when printing a portion of the print job; determining, based on the obtained value and the determined quantity of printing fluid to be deposited, whether the undesirable condition is likely to occur whilst printing the portion of the print job; and temporarily reducing the throughput of the printing system whilst printing the portion of the print job where it is determined that the undesirable condition is likely to occur whilst printing the portion of the print job.

Abstract: A printing system with adaptive printhead temperature control, comprises a least one printhead for inkjet printing; heating means to heat said printhead or ink in said printhead to a predetermined temperature range; and control means to analyze content information of a print job to be printed, wherein said control means sets said predetermined temperature range and sets a heating power of said heating means at a given position of said printhead in accordance with content information relating to an entire print page of said print job, or a plurality of print pages of said print job.

Abstract: A method to monitor a media roll mounted in a printing apparatus comprises scanning with a sensor an end side of a media roll by displacing the sensor in the radial direction of the roll, detecting the position of a media roll outer edge during said scanning, and determining a dimension of the media roll on the basis of the detected outer edge position.

Abstract: A printing system with adaptive printhead temperature control, comprises a least one printhead for inkjet printing; heating means to heat said printhead or ink in said printhead to a predetermined temperature range; and control means to analyze content information of a print job to be printed, wherein said control means sets said predetermined temperature range and sets a heating power of said heating means at a given position of said printhead in accordance with content information relating to an entire print page of said print job, or a plurality of print pages of said print job.