Abstract: An improved system for cleaning printing press components using a plurality of different cleaning specially each especially adapted for cleaning particular printing press components including inking rollers, printing blankets and printing plates is disclosed. The plurality of fluids are selectively dispensed using a controller to automatically coordinate the dispensation of the selected cleaning fluids in a predetermined pattern to selected ones of the press components without delivery to nonselected others of the inking rollers, printing blankets and other printing plates.

Abstract: A thermographic relief printing method is shown for printing a substrate at a printing station. The substrate is sprinkled with a thermographic powder at successive stations with each application station being provided with an applicator for applying a powder a predetermined grain size. The grain sizes are selected to achieve the maximum packing density and the powders are formed with substantially microspheric form of a specified diameter. The diameter of the powder grains at the first application station is greater than the diameter of the powder grains at the next successive application station. The substrate is passed to an oven in which the powder is fused to the printed areas of the substrate.

Abstract: An apparatus for supplying offset printing presses with a cooled damping solution uses a damping tray. The damping tray is subdivided into two distinct portions. A reserve portion contains concentrated solution supplied from a source of damping solution. The distribution solution communicates with a ductor roller. Restrictive holes formed in the partition dividing the two portions of the tray have a flow rate that is directly related to the amount of damping solution being used by the ductor roller in the printing press. This flow rate being very small, allows flow only from the reserve portion into the distribution portion of the tank.

Abstract: A thermography machine for relief printing equipped with a microwave device comprising: a generator FIG. 2 13 whose transmission frequency may be 2.45 GHz feeding an applicator 14 scattering the microwave energy over the powder image to be melted, a movable short-circuit 15 adjusting the length of the applicator 14 to make it resonate at the frequency of the microwave generator (for example 2.45 GHz), a nonreturn device arranged between the generator 13 and the applicator 14 and an electronic device for automatic tuning of the applicator 14.

Abstract: Multi-color offset printing presses for variable formats for continuous web printing with or without `Caroll` type perforations. This pressure exerted on the blanket bearing cylinder is released at the end of format and at least one printing cycle out of two by the action of a hydraulic cylinder. This enables the continuous web to be positioned correctly before the following printing cycle.

Abstract: A thermographic machine for relief printing enables one to treat a printed paper comprising several settings and to cut laterally and transversely. The printed paper is placed by the printing press on the conveyor of the cutting device. Circular knives slit the printed paper longitudinally. Lateral guides separate the strips of paper before the powdering. The strips are powdered and then go under a heat generator of pulsated hot gas. After cooling, the strips are conveyed to a transverse cutter, which cuts the strips into cards.

Abstract: A thermo-engraving machine has safety, energy conserving and convenience features. The thermo-engraving machine receives a freshly printed sheet, passes it through a device for depositing powder. It heats the powder to cause the powder to melt, then cools the sheet to create raised printed material. The deposition device in one case is a tank with a vertical partition that provides separate containers for powders of different types. The other deposition device is a cyclone type that is pivotal to allow easy cleaning and has toothed wheels in its suction manifold to retain the sheets. The oven has sidewalls that will laterally move to vary the width of the oven. Heater elements in the oven can be selectively turned off for smaller widths. The oven is held by a latch that releases the oven to spring upward should electricity be cut off to the solenoid that holds the latch in position.

Abstract: This invention relates to a mechanism and procedure designed for feeding ink to typographic, offset, flexographic and other presses.This invention is characterized in that the inking mechanism comprises a very high precision rotary drum which homogenizes and supplies, while micrometrically proportioning, one or several films of inks of different colors or kinds.This procedure is distinguished by the fact that the film or films created is/are directly ready for printing and particularly well suited for the simultaneous handling of different colors or kinds of ink.

Abstract: The present invention relates to a device for feeding ink to a printing press. The invention includes an ink drum and at least one doctor blade for micrometrically proportioning one or more ink films of different colors in narrow zones through a gap provided between the outer surface of the ink drum and the bottom edge of the doctor blade. A key improvement relates to a plurality of holders for carring a plurality of thin plates having contoured edges for acting as seals against the outer surface of the ink drum and against the front face of the doctor blade whereby there is formed a plurality of reservoirs for supplying a plurality of inks simultaneously through a gap provided between the ink drum and the doctor blade. In each holder, an adjustable screw presses against an element which contacts an uncontoured edge of each thin plate. The pressed element may be a captive ball traveling in a groove or a lever pivoted about an axis provided in each holder.