Abstract: A screen printing apparatus for printing a printing material to the front surface of a work that has a protrusion portion, comprising a stage for mounting the work, a screen frame formed on the upper surface of the stage, a screen mask secured to the screen frame, the screen mask having an opening portion at a particular printing position and a protrusion portion that covers the protrusion portion of the work, and a squeegee member moving in a particular direction for squeezing the printing material on the screen mask to the opening portion of the screen mask. In addition, the side surfaces of the protrusion portion of the screen mask are inclined to the main front surface for 90 degree or less. The portion that contacts the protrusion portion and the portion that does not contact the protrusion portion are separated by a slit.

Abstract: Device for cleaning cylinder bearers of rotary printing-unit cylinders having cylinder bearers mounted at respective end faces of at least two of the cylinders for attaining a defined spacing between respective axes of the two cylinders, the cylinder bearers being rotatable with the two cylinders, respectively, and being rollable on one another while being in continuous contact with one another, includes at least one cleaning element movable into engagement with a bearing surface of one of the cylinder bearers, respectively, by a pressure medium, and movable away from the bearing surface, the cleaning element being impregnatable with a fluid.

Abstract: A flexible plate is securable to a cylinder by insertion of fastening tabs, provided on beveled or angled ends of the plate, into cooperatively shaped end positioned pockets on the cylinder surface. The pockets may be formed by insert strips that utilize spaced tines to define the individual pockets.

Abstract: Sheet transfer drum mounted between printing units within side walls of a rotary printing press includes two gripper bars arranged symmetrically on a circumference of the sheet transfer drum so as to be located diametrically opposite one another on a y-axis of the sheet transfer drum; a drum body core formed with side surfaces extending between the gripper bars over the entire length of the sheet transfer drum within the circumference of the sheet transfer drum and having a convex curvature with a curvature gradient which is largest in the region of the x-axis and diminishes continuously towards the gripper bars.

Abstract: A cylinder in a rotary printing press is coupled to a driving wheel or gear by the engagement of two coupling disks. One of the disks is shiftable into coupling engagement with the other disk by application of a pressure medium to a work cylinder. A control valve is carried by the shiftable disk and limits the force of the pressure medium by use of a bleed passage that is closed only when coupling has been accomplished. The force of the pressure medium is at a higher level when coupling has been fully completed.

Abstract: An apparatus for cleaning a screen of a screen printing machine, including an ultrasonic vibrator which vibrates at an ultrasonic frequency, a cleaning-sheet supporting device which supports a portion or an entirety of a porous cleaning sheet between the screen and the vibrator, such that the portion or entirety of the cleaning sheet is contactable with the screen and the vibrator, and a washing-agent supplying device which supplies a washing agent to the cleaning sheet.

Abstract: A device for washing and drying printing plates has a run-in table (1) followed by a series of washing, rinsing, conserving and/or gumming and drying stations (2, 3, 4, 5), and pairs of rolls (10, 11) arranged in the various stations with a horizontal axis of rotation and a roll slit that lies at the level of the run-in table (1). At least one roll of each pair of rolls (10, 11) may be driven so as to feed the printing plates engaged by the rolls (10, 11) through the roll slit. The device finally has a run-out table (6). In all stations (2, 3, 4, 5) are provided longitudinal guiding means (12) aligned in a common line together with the conveyor (26) of the pairs of rolls (10, 11) All longitudinal guiding means (12) lie either above or below the roll slit and delimit after the roll slit an obstacle-free passage through all stations (2, 3, 4, 5).

Abstract: A litter box is provided having a litter-holding tray supported over a urine-collection cavity. The litter is contained within a disposable element which generally lines the tray. The disposable element and tray are permeable by liquids so that liquid waste falls from the litter cavity to the lower urine-collection cavity. The disposable element may be lifted and disposed of, along with the litter, in a clean and sanitary manner which avoids touching of the litter. The top, bottom container and tray are stackable and securable together in an easily disassemblable manner. The disposable element is preferably made of a biodegradable material including cornstarch and soy protein or a suitable biodegradable paper.

Abstract: The present invention relates to a product having raised thermographic print and a method for making the same. The product relates to a raised thermographic product having raised thermographic print greater than about 0.01 inches.

Abstract: The nonpolymerized portion of the resin on a photopolymerizable resin is recovered from a printing plate by squeezing the liquid resin off of the plate with the doctor roller. The plate is mounted on a drum and the drum is caused to rotate in a predetermined direction while the doctor roller is pushed against the surface of the plate. The liquid resin falls from the plate into a collection tray. The collection tray is divided into opposite adjacent resin repository sections, with a separate doctor roller being disposed above each repository section of the collection tray. Incompatible resins can be squeezed into the respective repository sections of the collection tray by the respective rollers by selectively rotating the drum in one direction or the other, and by selectively engaging the plate with one of the rollers while keeping the other roller away from the plate.

Abstract: To improve the throw-on and throw-off movement of the rollers in the roller train of inking or dampening units of a printing machine, an improved and simpler throw-on and throw-off device is provided. For this purpose, intermediate rollers are carried in bearing levers, which enable the intermediate rollers to be thrown off from adjacent distributor rollers. For the simple parallel throw-on of the intermediate rollers, their bearing levers carry cam rollers which are supported on an adjusting rod. The adjusting rod has cam sections which cooperate with the cam rollers, and in response to longitudinal displacement of the adjusting rod, the intermediate rollers are moveable in throw-on and throw-off directions.

Abstract: A printing device is described which can provide extended functions while nevertheless remaining portable and inexpensive. This is achieved by providing an interface which is connected to a controller of the printing device and which is adapted to be connected to one of a selection of external cartridges to support a wider variety of functions of the printing device.

Abstract: In a printer for printing on a recording medium using a transfer medium, a transfer medium capable of being repeatedly used at the same portion thereof (e.g., a multi-pass thermal transfer ribbon) is conveyed in the normal direction in performing the printing process by a recording means such as a thermal head etc. and the conveying amount of the transfer medium which is used for printing is measured at that time. The transfer medium is conveyed in the reverse direction by a given amount based on the result of the measurement and the reverse direction conveying ratio of the transfer medium to the used length of the transfer medium which is arbitrarily set by a transfer medium reverse direction conveying ratio setting means irrespective of the used amount of the transfer medium every time a unit of printing is completed. Thereafter the transfer medium is conveyed in the normal direction for printing.

Abstract: A cleaning system for removing contaminants from the surface of a roller. A stationary cleaning pad is forced at a first urging force against a roller to be cleaned, and the roller is driven in rubbing contact with the pad. Preferably, the pad is supplied continuously with a cleaning liquid. An actuator disposed against a portion of the back of the pad urges that portion against the roller at a second, greater urging force to accelerate the rate of cleaning. A control loop between the roller motor drive and the actuator responds to a signal from the drive indicative of the magnitude of frictional resistance between the roller and the pad and increases or decreases the second force furnished by the actuator to provide a predetermined constant frictional resistance during cleaning. If flow of cleaning liquid to the pad is lost, friction can build up quickly and the roller surface can become damaged.

Abstract: Metal printing plates can be loaded onto a drum and held in place by vacuum alone if flat plates are given a permanent curl by a set of four rollers. Same rollers cancel out the curl when plate is unloaded from drum. The invention is useful for Computer-to-Plate and Computer-to-Press systems.

Abstract: A sheet guide in a feeder of a sheet-fed printing press has lateral guide plates for upper sheets of a sheet pile for laterally aligning the upper sheets with one sheet edge, and at least one deformable leaf spring located at a side of the sheet pile opposite to the side thereof at which the aligned sheet edge is disposed and acting by spring force against the upper sheets transversely to a sheet-feeding direction of the upper sheets of the sheet pile, the leaf spring being re-deformable counter to the spring force to behind a surface of the guide plate.

Abstract: Dental inserts for stopping or filling a cavity of a carious tooth treated by preparation. The inserts have a spherical or hemispherical shape and are matched to the particular drilling and plugging instruments.

Abstract: Device for wrapping a flexible print image carrier around a printing form cylinder installed in a printing press, having a rewinding mechanism including a first winding spool for unwinding a print image carrier which is windable onto an outer cylindrical surface of the printing form cylinder, and a second winding spool for winding up the print image carrier from the outer cylindrical surface of the printing form cylinder, both of the winding spools being jointly disposed in a cavity formed in the interior of the printing form cylinder, the cavity having a single opening thereto formed in the outer cylindrical surface of the printing form cylinder, the print image carrier being windable from the first winding spool through the single opening onto the outer cylindrical surface of the printing form cylinder and being windable from the outer cylindrical surface of the printing form cylinder through the single opening onto the second winding spool, includes a bearing member supporting the rewinding mechanism for t

Abstract: This invention is directed to a temporary implant for use as an anchor in the mouth, as well as to a method of attaching the temporary implant to the maxillary or mandibular bone. The temporary implant includes an implant adapted to be temporarily affixed in a buccal, labial, lingual or palatal bone surface of the maxillary jawbone, or buccal, labial or lingual bone surface of the mandibular jawbone. In one embodiment, the implant includes a longitudinal threaded cylindrical bore for releasably attaching various orthodontic appliances to the implant.

Abstract: A transfer foil for use in marking a golf ball has an ink layer on a base film. The ink layer is constructed by a urethane resin having a hydroxyl value of 0.2 to 15. The ink layer is transferred from the foil to the golf ball to form a marking by pressing the foil against the ball by means of a flat rubber pad. A two-part urethane resin composition is then spray coated onto the golf ball so as to cover the marking, dried and cured thereto. During the process, hydroxyl groups of the ink layer urethane resin react with isocyanate groups available from the urethane resin coating composition whereby the marking is durable.