A digital printing system includes a print head and a processor. The print head is configured to jet droplets of ink. The a processor is further configured to translate a required shade of a color, to be printed at a given location on a substrate by the print head, into a sequence of pulses, the sequence including: (a) up to a predefined maximum number of driving pulses that cause the print head to jet respective droplets, and (b) a tickling pulse, which has a smaller amplitude than the driving pulses and which causes the print head to jet a droplet smaller than the droplets jetted in response to the driving pulses. The processor is additionally configured to apply the sequence of pulses to the print head.

An intermediate transfer body includes a surface layer, an elastic layer, and a heat-insulating layer contiguously in the mentioned order, and the surface layer, the elastic layer, and the heat-insulating layer satisfy the following Equations 1 to 4:

(C1+C2)×Δt≦Q  Equation 1:

100 MPa≦E1≦1,000 MPa  Equation 2:

0.5 MPa≦E2≦50 MPa  Equation 3:

λ3≦0.13 W/m.Math.K≦λ1≦λ2.  Equation 4:

A system and method for performing quality control in a digital printing system (DPS) is provided. The DPS includes an impression station for transferring an ink image from a surface of an intermediate transfer member to a substrate. The impression station includes an impression cylinder housing one or more grippers operable to grasp and hold a leading edge of the substrate as it passes through the DPS, for conveying the substrate along the impression cylinder during the transfer of the ink image. An imaging device is operable, during advancement of the substrate on the impression cylinder, to capture a digital image including a region of interest (ROI) that is associated with at least a portion of the grippers and at least a portion of the substrate. A controller is configured, based on the digital image, to indicate an error in a position of the substrate relative to the grippers.

Embodiments of the invention relate to a method of indirect printing with an aqueous ink formulation applied to the surface of the intermediate transfer member. Related apparatus, systems and treatment formulations are disclosed herein.

Methods for printing using printing systems comprising a flexible intermediate transfer member (ITM) disposed around a plurality of guide rollers at which encoders are installed, and an image-forming station at which ink images are formed by droplet deposition by print bars onto the ITM, can include measuring a local velocity of the ITM under one of the print bars, determining a stretch factor for a portion of the ITM based on a relationship between an estimated stretched length fixed physical distance between print bars, controlling an ink deposition parameter according to the stretch factor so as to compensate for stretching of the reference portion of the ITM.

A three-dimensional (3D) inkjet printer is configured to build up an object by printing a series of layers and stacking them to form the object. In order to speed printing, drying of each layer is accelerated by using a pressure differential to extract liquid vehicle from the ink, and by moving the printed layer away from the inkjet print heads before drying so that the inkjet print heads may print the next layer. The dried printed layer may also be conditioned and/or cured. Dried printed layers are stacked at a build station to assemble the finished object.

A printing apparatus and a printing method for applying ink to a surface of a printing plate in a predetermined pattern and then transfer the ink applied in the shape of the pattern to a substrate. A scale is formed on the surface of the printing plate; the printing apparatus includes a plate cylinder on which the printing plate is provided, an image recording section that applies the ink to the surface of the printing plate in the predetermined pattern by an ink jet method, a reading unit that reads the scale and obtains position information data of the scale, a signal generation part that generates a signal based on the position information data obtained by the reading unit, and an adjustment part that adjusts an ejection timing of the ink in the image recording section on the basis of the signal obtained by the signal generation part.

A liquid discharge head includes: a substrate, where a recording element is disposed; and a discharge orifice forming member, where a discharge orifice, facing the recording element, and configured to discharge the liquid, is formed. The liquid discharge head has a pressure chamber, a first liquid channel configured to supply liquid to the pressure chamber, and a second liquid channel configured to recover liquid from the pressure chamber. The substrate has a liquid supply channel connected to the first liquid channel to supply liquid to the first liquid channel, and a liquid recovery channel connected to the second liquid channel, to recover liquid from the second liquid channel. Pressure at an inlet portion of the liquid supply channel is higher than pressure at an outlet portion of the liquid recovery channel, and a flow velocity of liquid within the pressure chamber is 3 to 140 mm/s.

A method of manufacturing a pattern includes providing a pattern of a first liquid on a medium, applying a powder material to the provided pattern, and providing a second liquid to the powder material applied to the first liquid.

A sacrificial coating composition for an image transfer member in an aqueous ink imaging system. The sacrificial coating composition includes a latex having polymer particles dispersed in a continuous liquid phase; at least one hygroscopic material; at least one surfactant; and water.