Abstract: Offset print apparatus comprises: a blanket to receive print agent; a non-contact temperature sensor to monitor electromagnetic radiation from a measurement location of the blanket and generate a respective output; and a controller to: receive the output from the non-contact temperature sensor; determine coverage information relating to a print agent coverage of the blanket at the measurement location; and calculate a temperature of the blanket at the measurement location taking into account both the output from the non-contact temperature sensor and the determined coverage information.

Abstract: An EDX sensing unit that includes an x-ray sensor including one or more sensing regions, and a protective unit that is configured to introduce a change in one or more properties of electrons emitted from the sample, thereby preventing the electrons emitted from the sample from reaching the one or more sensing regions; wherein the electrons are emitted from the sample due to an illuminating of the sample by a primary electron beam. The x-ray sensor is configured to (i) receive, by the one or more sensing regions, x-ray photons emitted from the sample due to the illuminating of the sample, and (ii) generate detection signals indicative of the x-ray photons.

Abstract: An energy-dispersive x-ray spectroscopy (EDX) sensing unit, the EDX sensing unit include a protective unit and an x-ray sensor that includes one or more sensing regions. The protective unit is configured to (i) introduce a change in one or more properties of electrons emitted from a sample, thereby preventing the electrons emitted from the sample from reaching the one or more sensing regions, the electrons are emitted from the sample due to an illuminating of the sample by a primary electron beam, and (ii) increase a safety of operation of the EDX sensing unit. The x-ray sensor is configured to (i) receive, by the one or more sensing regions, x-ray photons emitted from the sample due to the illuminating of the sample, and (ii) generate detection signals indicative of the x-ray photons.

Abstract: Offset print apparatus comprises: a blanket to receive print agent; a non-contact temperature sensor to monitor electromagnetic radiation from a measurement location of the blanket and generate a respective output; and a controller to: receive the output from the non-contact temperature sensor; determine coverage information relating to a print agent coverage of the blanket at the measurement location; and calculate a temperature of the blanket at the measurement location taking into account both the output from the non-contact temperature sensor and the determined coverage information.

Abstract: There is provided a method and apparatus for preparing a print substrate. A surface resistivity of a print substrate comprising a conductive layer is determined. The determined surface resistivity is compared to a print range having a lower threshold value for the surface resistivity of the print substrate and an upper threshold value for the surface resistivity of the print substrate. If the determined resistivity of the print substrate is outside the print range, a surface modification is selected to adjust the determined surface resistivity of the print substrate to fall within the print range. The selected surface modification is applied to the top layer of the print substrate.

Abstract: Herein is described a liquid electrostatic printing method comprising providing a liquid electrostatic ink composition comprising a carrier liquid and chargeable particles comprising a resin; and providing an adhesion promoting composition comprising an adhesion promoter. The liquid electrostatic ink composition is contacted with a latent electrostatic image disposed on a surface to create a developed ink image. The developed ink image is transferred to an intermediate transfer member. The adhesion promoting composition is deposited on the intermediate transfer member to form an adhesion promoting layer. The adhesion promoting layer and the developed ink image are transferred to a print substrate, such that the adhesion promoting layer is disposed on the print substrate and the developed ink image is disposed on the adhesion promoting layer.

Abstract: Herein is described a liquid electrostatic printing method comprising providing a liquid electrostatic ink composition comprising a carrier liquid and chargeable particles comprising a resin; and providing an adhesion promoting composition comprising an adhesion promoter. The liquid electrostatic ink composition is contacted with a latent electrostatic image disposed on a surface to create a developed ink image. The developed ink image is transferred to an intermediate transfer member. The adhesion promoting composition is deposited on the intermediate transfer member to form an adhesion promoting layer. The adhesion promoting layer and the developed ink image are transferred to a print substrate, such that the adhesion promoting layer is disposed on the print substrate and the developed ink image is disposed on the adhesion promoting layer.

Abstract: There is provided a method and apparatus for preparing a print substrate. A surface resistivity of a print substrate comprising a conductive layer is determined. The determined surface resistivity is compared to a print range having a lower threshold value for the surface resistivity of the print substrate and an upper threshold value for the surface resistivity of the print substrate. If the determined resistivity of the print substrate is outside the print range, a surface modification is selected to adjust the determined surface resistivity of the print substrate to fall within the print range. The selected surface modification is applied to the top layer of the print substrate.

Abstract: The present invention provides a printing assembly which includes a printing drum such as an impression drum, a pair of eccentric bearings between and on which the drum is mounted for rotation, a pair of self aligning bearings on which the eccentric bearings are supported, and a pair of frameless motors directly connected to the eccentric bearings in order to effect the rotation thereof through closed loop feedback control, in order to facilitate the automatic and accurate control of pressure level and uniformity along the nip of a printing press.

Abstract: The invention relates to a method for adjusting a gap in a printing system in which a first roller and a second roller are provided, wherein at least one of said first roller and said second roller comprises a seam, said seam corresponding to a variation of the diameter of said first roller and said second roller, respectively, along a circumference thereof. An interaction zone is provided, wherein said second roller is in rolling contact with said first roller under pressure, said interaction zone defining a gap for inserting a media to be printed. A size of said gap is controlled by varying a relative position of said first roller and said second roller when said at least one seam passes through said interaction zone, and said gap is adjusted in accordance with a length of said media to be printed and/or in accordance with a length of an image to be printed.

Abstract: The invention relates to a method for adjusting a gap in a printing system in which a first roller and a second roller are provided, wherein at least one of said first roller and said second roller comprises a seam, said seam corresponding to a variation of the diameter of said first roller and said second roller, respectively, along a circumference thereof. An interaction zone is provided, wherein said second roller is in rolling contact with said first roller under pressure, said interaction zone defining a gap for inserting a media to be printed. A size of said gap is controlled by varying a relative position of said first roller and said second roller when said at least one seam passes through said interaction zone, and said gap is adjusted in accordance with a length of said media to be printed and/or in accordance with a length of an image to be printed.

Abstract: The invention relates to a method for adjusting a gap in a printing system in which a first roller and a second roller are provided, wherein at least one of said first roller and said second roller comprises a seam, said seam corresponding to in a variation of the diameter of said first roller and said second roller, respectively, along a circumference thereof. An interaction zone is provided, wherein said second roller is in rolling contact with said first roller under pressure, said interaction zone defining a gap for inserting a media to be printed. A size of said gap is controlled by varying a relative position of said first roller and said second roller when said at least one seam passes through said interaction zone, and said gap is adjusted in accordance with a length of said media to be printed and/or in accordance with a length of an image to be printed.

Abstract: The invention relates to a method for adjusting a gap in a printing system in which a first roller and a second roller are provided, wherein at least one of said first roller and said second roller comprises a seam, said seam corresponding to a variation of the diameter of said first roller and said second roller, respectively, along a circumference thereof. An interaction zone is provided, wherein said second roller is in rolling contact with said first roller under pressure, said interaction zone defining a gap for inserting a media to be printed. A size of said gap is controlled by varying a relative position of said first roller and said second roller when said at least one seam passes through said interaction zone, and said gap is adjusted in accordance with a length of said media to be printed and/or in accordance with a length of an image to be printed.

Abstract: Detecting an issue in a digital printer that has an optical element positioned to direct a laser beam towards a photoconductor surface may include sending optical element position commands to move the optical element to compensate for inconsistent movements of a photoconductor drum and creating a record of the optical element position commands.

Abstract: A method and system for maintaining a substantially uniform pressure between a pair of rollers is disclosed.

Abstract: Detecting an issue in a digital printer that has an optical element positioned to direct a laser beam towards a photoconductor surface may include sending optical element position commands to move the optical element to compensate for inconsistent movements of a photoconductor drum and creating a record of the optical element position commands.

Abstract: A method and system for maintaining a substantially uniform pressure between a pair of rollers is disclosed.