347results about "Printing blankets" patented technology

A printing process is disclosed which comprises directing droplets of an ink onto an intermediate transfer member to form an ink image, the ink including an organic polymeric resin and a coloring agent in an aqueous carrier, and the transfer member having a hydrophobic outer surface so that each ink droplet in the ink image spreads on impinging upon the intermediate transfer member to form an ink film. The ink is dried while the ink image is being transported by the intermediate transfer member by evaporating the aqueous carrier from the ink image to leave a residue film of resin and coloring agent. The residue film is then transferred to a substrate. The chemical compositions of the ink and of the surface of the intermediate transfer member are selected such that attractive intermolecular forces between molecules in the outer skin of each droplet and on the surface of the intermediate transfer member counteract the tendency of the ink film produced by each droplet to bead under the action of the surface tension of the aqueous carrier, without causing each droplet to spread by wetting the surface of the intermediate transfer member.

A rubber cylinder sleeve for web-fed rotary offset printing machines has a covering layer which is a finite layer having a joint location, the joint location being filled with a compressible material.

There is disclosed a formulation for use with an intermediate transfer member of an indirect printing system, including: (a) a carrier liquid: (b) a positively chargeable polymeric chemical agent having amine functional groups; and (c) a resolubilizing agent selected to improve resolubilization of said chemical agent. Method of use thereof is also provided.

A method for treating a hydrophobic release layer of an intermediate transfer member for use in a printing process in which a negatively charged aqueous inkjet ink is jetted onto the surface of this layer. The method comprises contacting the release layer with a chemical agent which is an amine functionalized silicone. Transfer members comprising such a treated release layer and images printed therefrom are also disclosed.

An image transfer product such as an offset printing blanket or sleeve is provided which comprises a very thin printing surface layer in combination with a smooth image reinforcement layer comprising a polymeric film, a fabric, or a polymer-coated fabric. The thin printing surface layer has a thickness between about 0.001 to about 0.012 inches (about 0.025 to about 0.3 mm). The image transfer product is more efficiently manufactured due to reduced solvent usage and reduced number of coating passes, and in use, exhibits uniform feed, web control, and registration characteristics.

Disclosed is a surface treated doctor blade in which the surface of at least the blade edge portion thereof consists of a surface treatment coating film composed of a first layer consisting of a specific nickel-based plating and a second layer provided thereon which has low surface energy, and in which preferably at least a part of the blade edge end portion of the blade base material is exposed. In the surface treated doctor blade of the present invention, it is possible to improve wear resistance of the blade edge end and to suppress generation of printing failures during continuous printing. Further, in the mode in which at least a part of the blade base material is exposed, it is possible to reduce running-in time for adjustment of contact of the blade edge with the cylinder after replacement of the doctor blade.

An apparatus for producing printing plates on a supporting cylinder is provided. Mountings arranged on a frame accommodate a blank printing plate arranged on a supporting cylinder. The supporting cylinder is driven by a motor. The apparatus allows the supporting cylinder to be exposed at an end opposite the motor by its journal together with the mounting accommodating the journal. Thus, the supporting cylinder is capable of being moved away from the frame at one end, which makes it possible to draw the printing plate axially off the supporting cylinder. The apparatus can be used to produce a variety of printing plates, including: a relief printing plate, an offset printing plate, a sleeve-like printing plate, and a gravure printing plate.