Abstract:
A printing plate including a printing plate member, an easily deformable elastic layer laminated on the printing plate member, a surface layer having a higher elasticity than that of the elastic layer, laminated on the elastic layer, and a printing surface layer formed on the surface layer. The printing surface layer has an image area having an affinity with an ink and a non-image area having an ink repellancy.
Abstract:
A method of non-overlap halftone-dot printing of a colored original on the outer surface of a cylindrical container is done by dry off-set printing. A colored original is color-separated into three primary colors, i.e., cyan, magenta and yellow, change-to-halftone is effected to give an effect of contact screening with the same angle for the individual separated primary colors, and one pixel of print is expressed by three colors at most, i.e., one of the three primary colors, one of three secondary colors, i.e., cyan-magenta, magenta-yellow and yellow-cyan blend colors, and black (tertiary color).
Abstract:
A method of forming an ink image with a thermo-sensitive ink by using a printing plate that is used in dry lithographic printing, and printing the ink image onto an object. An ink remover is placed via a thermo-sensitive ink layer that is in a heated state on a printing surface of a printing plate having a part receptive to ink and a part capable of repelling ink. The printing plate and the ink remover are separated after they are cooled so that the ink layer on the part capable of repelling ink is transferred to the ink remover. The ink image obtained on the printing plate or the ink remover is transferred to an object. Printing that does not require maintenance that has been essential to conventional dry lithographic printing becomes possible.
Abstract:
A process for producing an aluminum support for a lithographic printing plate is described, which comprises jetting a high-pressure liquid from at least one nozzle at a high rate, joining the jetted stream with a slurry containing a fine powder of an abrasive spouted from at least one spout, and directing the resulting mixed stream to strike against a surface of an aluminum plate to carry out cleaning and sandblasting at the same time.
Abstract:
A method of printing comprising applying a conductive developer to a imaged dielectric surface in the presence of an energising electrical image-defining field to form a master having conductive and relatively insulating areas defining the image, inking the said surface in the presence of a field of a polarity to urge the ink on to the surface to retain it at the relatively insulating image areas, and transferring the ink from the said surface to a receiving surface in the presence of a field of a polarity to urge the ink on to the receiving surface, and continuing inking the said master and transferring the ink to further receiving sheets.
Abstract:
A novel method of preparing a waterless lithographic master and a method of printing therefrom are provided. To prepare the printing master, a suitable substrate which can be photoconductive or non-photoconductive is imaged with a hydrophobic particulate image pattern and the image fused to the substrate. The imaged substrate is then coated with an aqueous silicone which does not wet the hydrophobic image pattern. The silicone is then heated to selectively provide ink-receptive image areas and ink-releasing non-image areas.
Abstract:
A PROCESS FOR THE CONTROLLER AND TRANSMISSION OF THERMOPLASTIC TRANSFER MEDIUM VIA ONE OR MORE SILICONE ELASTOMER SURFACES TO FINAL DEPOSITION ON A RECEPTOR SURFACE WHICH MAY BE ANOTHER SILICONE ELASTOMER SURFACE OR, MORE GENERALLY, PAPER, A POLYMERIC FILM, METAL, GLASS, CLAY, ETC. THE PROCESS UTILIZES FORCES INTRINSIC TO THE MATERIALS EMPLOYED, I.E., SILICONE ELASTOMERS, THERMOPLASTIC TRANSFER MEDIUM (INK) AND THE VARIOUS RECEPTOR SURFACES. THE PHYSICAL STATE OF THE TRANSFER MEDIUM CAN BE MANIPULATED TO PROVIDE FOR NON-SPLITTING TRANSFER FROM ONE SILICONE ELASTOMER SURFACE TO ANOTHER, ADHESIVELY FAVORED SILICONE ELASTOMER OR NONSILICONE ELASTOMER SURFACE. THE PROCESS FINDS UTILITY IN THE COATING, PRINTING, AND DUPLICATING FIELD.
Abstract:
A method of manufacturing an image element array includes: providing a production tool having a surface pattern of ink-receptive elements spaced by areas which are not, the ink-receptive elements defining the array image elements; applying a multi-coloured first image formed of a inks to only the ink-receptive elements; and transferring only the portions of the multi-coloured first image corresponding to the image elements from the production tool to a substrate. An image element array is formed on the substrate. The production tool surface pattern is configured such that when viewing and image element arrays overlap, each viewing element within an image element array first region directs light from a respective image element or from a respective gap. The viewing angle in the first region directs light from either the array or the gaps.