Abstract: Sealing device for a dampening unit of an offset printing machine having a dampening-medium applicator roller and a metering roller rolling on one another so that a duct for receiving a supply of dampening medium therein is formed by an upper wedge located between the metering roller and the applicator roller, and having a sealing support bracket mountable on a lateral part of the dampening unit pre-stressed in a direction towards an end face of the rollers, and a sealing element held by the sealing support bracket and sealingly supported radially on the metering roller and sealingly engaging the end face of the dampening-medium applicator roller. A path is defined for swivelling the sealing element into a make-ready position wherein the sealing element is removable from the sealing device, the path being left free by the sealing support bracket so that the sealing element may be turned about the metering roller.

Abstract: For the register of a sleeve-shaped offset priming form in which the beginning and end of the plate-shaped blank of the printing form are connected by a weld seam, a guide element in the form of a projection is provided for the sleeve at the inside of the sleeve. A form cylinder which can be used in combination with the sleeve has a groove extending along its entire width, which groove has a depth that is greater than the height of the projection. The projection can be inserted completely into the groove so that the sleeve can be secured on the form cylinder in the circumferential direction.

Abstract: Lithographic printing plates suitable for imaging by means of laser devices that emit in the near-infrared region. Laser output either ablates one or more plate layers or physically transforms a surface layer, in either case resulting in an imagewise pattern of features on the plate. The image features exhibit an affinity for ink or an ink-abhesive fluid that differs from that of unexposed areas.

Abstract: In a paper feeding method and an apparatus therefor, papers are selectively fed to a paper-processing station through at least two paper guide paths. The respective papers fed through the paper guide paths are monitored to determine whether or not a double feeding of the papers has occurred, and when a double feeding of the papers is detected, an alarm warning of the occurrence of a double feeding of the papers is raised.

Abstract: The apparatus for screen printing from one edge to the other of an object of a rigid material, beside the conventional components for screen printing, includes a scraper, acting on the lower face of the printing frame, for removing ink from the portion of design that exceeds the perimetric dimensions of the object to be printed. Through the apparatus it is possible to perform a method for screen printing from one edge to the other of an object made of a rigid material, which method consists of printing the design on the object, exceeding the printing on at least one of the edges of the object; spacing the printing frame from the printed object and scraping, from the lower face of the printing frame facing the object, ink which has not been deposited on the object because of the lesser dimensions of the object with respect of the design.

Abstract: A method of lubricating a bearing (58) in a printing unit (14) includes the step of directing a quantity of grease into the bearing (58), and the step of directing pressurized air into contact with the grease. The bearing (58) supports a printing cylinder (16) for rotation in the printing unit (14), and includes a plurality of rolling elements (100) between a pair of opposed bearing race surfaces (94, 88). A predetermined quantity (160) of grease is directed to flow from a hydraulic pump (114) to the space between the bearing race surfaces (94, 88). The pressurized air is directed to flow from a pneumatic pump (132) into contact with the grease to remove a first portion of the predetermined quantity (160) of grease from the space between the bearing race surfaces (94, 88). The pressurized air further spreads a second portion of the predetermined quantity (160) of grease into coatings (190) which extend over the rolling element surfaces (104) and the bearing race surfaces (94, 88).

Abstract: A sensor system (56) for measuring various parameters of a stench printer (10) includes a test fixture (58) having a plurality of sensors (64--64 and 68--68) arranged therein. The test fixture (58) is adapted for substitution with a conventional PWB (16) so as to underlie a stencil (26) of the printer to measure the forces on, and the proximity to, the stencil. The force and proximity information from the sensors (64--64 and 68--68) is coupled by an interface unit (70) to a control processor that processes the sensor information to indicate what stench printer parameters, if any, may need adjustment.

Abstract: A layer of ink containing a light absorbing heat generating substance is provided on the rear surface of a heat-sensitive plastic film of a thermal stencil sheet when the heat-sensitive plastic film is perforated by a laser beam. When a rotary stencil printer is used, a stencil sheet is mounted around a printing drum of the rotary stencil printer in a condition adhesively held by an ink layer, then a laser beam is irradiated to a portion of the stencil sheet to be perforated, and then the printing process is carried out with the stencil sheet as it has been mounted around the printing drum for the perforation.

Abstract: A mimeographic printing machine includes a flexible rotary cylindrical printing drum, a lower pusher roller, an inside pusher roller, inside pusher roller controller, and printing sheet conveyor. A stencil paper is wound on the outer surface of the flexible rotary cylindrical printing drum. The lower pusher roller is provided in parallel with the flexible rotary cylindrical printing drum with a predetermined space between the lower pusher roller and the flexible rotary cylindrical printing drum and inside the flexible rotary cylindrical printing drum. The inside pusher roller controller moves the inside pusher roller between a deformation position to push the flexible tubular wall radially outwardly thereby to deform the flexible tubular wall towards the lower pusher roller in the case of printing, and a steady position to release the flexible tubular wall from the deformation in the case of non-printing. The printing sheet conveyor moves the printing sheet from the sheet supplying section through the space.

Abstract: A stamp unit includes a grip portion to be grasped by a hand, a stamp portion that is fixedly linked to the grip portion, a skirt member covering the outer peripheral side of the stamp side, and a protection cap that is freely detachably mounted on the stamp portion. The skirt member is upwardly and downwardly slidably supported. At its nonuse time, the lower end of the skirt member projects to a position lower than a print face portion of the stamp portion. However, by locating the stamp unit at a print position and pressing the grip portion, the skirt member is moved upwardly, and the print face portion of the stamp member is pressed against a print surface, whereby ink oozes out from the print face portion to perform the print operation. The stamp unit is further provided with plural engaging holes formed at the lower portion of the grip member and plural engaging pawls that are provided at the upper portion of the stamp member and elastically engaged with the respective engaging holes.

Abstract: A screen printing machine in which a squeegee is driven to form a film of solder on a board through a screen, includes an automatic squeegeeing angle setter which includes a squeegeeing angle adjuster for adjusting a squeegeeing angle of the squeegee and a squeegeeing angle detector for detecting the angle thereof to set the squeegeeing angle of the squeegee by the squeegeeing angle adjuster based on a detection of the squeegeeing angle detector, an automatic pressing amount setter which includes a squeegee pressing amount adjuster for adjusting a squeegee pressing amount caused by the squeegee and a squeegee pressing force detector for detecting a squeegee pressing force to set the pressing amount in consideration of a change in height resulting from a change of the angle of the squeegee by the squeegee pressing amount adjuster based on a detection of the squeegee pressing force detector, and an automatic balancing amount setter which includes a pressing amount balance adjuster for adjusting a balance of the

Abstract: The invention comprises a mobile rest plane for tiles on which operates a matrix cylinder provided with an elastically deformable peripheral part having a smooth external skin made of an elastomer material, on which a matrix, in the form of microscopic cavities, is cut. A doctor, arranged in order to be in contact with the skin, has the task of scraping away excess glaze and any impurities deposited on the skin as well as the task of remixing the glaze such as at least partially to replenish the cavities with freshened glaze. The matrix cylinder is positioned on the rest plane such as to roll thereon without dragging on a tile upper surface as the tile transits on the rest plane.

Abstract: A printing drum mounted rotatably in a printing machine, the printing drum including an ink-permeable peripheral wall, with ink being fed from the inside of the ink-permeable peripheral wall, and an ink-permeable screen formed of a heat-shrinkable material and held in a heat-shrinkable manner in close contact with the outer peripheral surface of the ink-permeable peripheral wall.

Abstract: A dental interproximal disk formed of rigid sheet material as a unitary or integrally formed handle portion and blade portion with an arcuate cutting edge. The handle portion includes a plurality of corrugated flutes terminating in a laterally offset flange. The side surfaces of the blade portions may be either smooth or roughened on one or both surfaces thereof. An aperture is formed adjacent one end of the handle portion for attachment of a string or cord to effect retrieving if necessary as a matter of safety.

Abstract: In a method and apparatus for printing on objects using a screen printing procedure, the print image applied to a respective object is dried by UV-rays produced by at least one UV-radiating device. Drying of the applied print image is effected during a transportation movement which the object performs in order to be transported after the drying operation from one location to another. The radiating device which produces the UV-rays is moved with the object at least during a pert of the transportation movement in the direction of movement of the object, in such a way that in such movement the print image is dried.

Abstract: A planographic printing plate in which a design pattern is realized in a part of the back surface of a support for the planographic printing plate without any adverse influence on a photosensitive resin layer on the front surface thereof. After an aluminum support with a thickness of 0.24 mm is cleaned by degreasing and etching, an electrolytic aqueous solution is prepared to contain the nitric acid concentration of 10 g/l and the aluminum ion concentration of 7 g/l. In an electrolytic treatment cell 5, the back surface of the aluminum support is arranged so as to be faced to an electrode. A 1 mm-thick masking plate formed of an insulating material punched to provided openings with arbitrary shapes is brought into close contact with the back surface of the aluminum support so that the back surface of the aluminum support is covered with the masking plate. A carbon plate with a thickness of 50 mm is used as the electrode.

Abstract: A screen printing apparatus includes a screen exposed to a light source. A conveyer is arranged for receiving the exposed screen. Another conveyer is disposed below the previous conveyer and extended distal to the light source for receiving and for moving the screen. A turning device is disposed between the conveyers for turning the screen up-side-down. A washing device may provide water for washing the screen. A drying device is disposed beside the washing device for drying the washed screen. The screen printing plate can be made automatically.

Abstract: A method for producing a stamp includes the following steps: (1) forming a stamp member from a rubber material which has a low rebound characteristic and low compressibility; (2) preparing a plurality of stamping inks of different colors, each of the stamping inks having a relatively high viscosity and low flowability; (3) diluting the stamping inks with a diluent to increase their flowability and permeability; (4) placing a plurality of ink-absorbing members in a side-by-side adjacent arrangement and isolating them from one another in order to prevent fluid communication; (5) adding the diluted stamping inks into the ink-absorbing members respectively; (6) saturating the stamp member with a highly volatile liquid; (7) disposing the stamp member on the ink-absorbing members to transfer the diluted stamping inks from the ink-absorbing members to the stamp member so as to have the stamp member formed with regions of different colors, the highly volatile liquid assisting the infiltration of the diluted stamping

Abstract: An improved neck support for a nasal cannula assembly. The neck support includes a support bracket having a central opening therethrough for receiving and engaging a main oxygen supply conduit of the nasal cannula assembly to attach the nasal cannula assembly to the support bracket. The central opening includes an access slot for the main oxygen supply conduit. The neck support further includes a flexible chain which attaches to the support bracket and which can be placed loosely around a patient's neck. In use, the neck support can be rested against the patient's body and supported by the flexible chain about the patient's neck such that a substantial portion of the weight of the nasal cannula assembly is borne by the patient's neck.