Abstract: Device for fixing a flexible printing form on a form cylinder of a printing press, the form cylinder having at least one axially extending slit formed therein, and at least one leaf-shaped element disposed in the slit, the leaf-shaped element having a rounded end portion for securing a bent portion of a flexible form, includes a tubular support wherein the leaf-shaped element is disposed so as to form a fastening element, the tubular support accommodating an actuating member capable of resiliently deforming the fastening element.

Abstract: A sheet feeding device for feeding sheets from a sheet input side to a sheet output side, the sheet feeding device comprising a rotatable sheet feed roller; a pressing roller disposed in confrontation with the sheet feed roller so that a sheet sandwiched between the pressing roller and the sheet feed roller contacts the sheet feed roller at a contact position and is fed from the sheet input side to the sheet output side by rotational force of the sheet feed roller, a tangential plane passing through the contact position dividing space between a sheet feed roller side and a pressing roller side; a reference surface disposed at the sheet output side in intersection with the tangential plane; an arm swingably supporting the pressing roller in confrontation with the sheet feed roller; and a swinging axis swingably supporting the arm and disposed at the sheet input side and at the pressing roller side.

Abstract: Disclosed is an amusement stamp for children which includes a light-pervious ornament removably but tightly fitted on an ornament seat, an outer ring member, a retractable stamp seat having a design-bearing lower head and being supported in the outer ring member, a spring disposed in the outer ring member around the stamp seat, and a bottom cover for protectively closing the design-bearing lower head of the retractable stamp in a bottom opening of the outer ring member. The ornament seat is connected to a top edge of the outer ring member and compresses the spring between it and the retractable stamp seat. A small bulb is mounted on a top of the ornament seat and can be turned on or off via a pushbutton sideward projected from a side wall of the ornament seat. When a child uses the amusement stamp to imprint a pattern on something, the design-bearing lower head of the retractable stamp seat is pushed upward and depresses the pushbutton to lighten the small bulb, creating more funs for the stamp.

Abstract: A computing system having a keyboard that is supported from a work surface by one or more support members. The positions of the support members relative to the keyboard are varied in accordance with a predetermined timed sequence, causing corresponding variances in the height of the housing portions corresponding to the support members. The intervals between height variances are such that the latter variances are not noticeable by the user of the system.

Abstract: A printing cylinder mandrel (1) arranged to support a sleeve mounted on it and carrying the print characters, the mandrel (1) being surface-deformable and able to assume at least two configurations, in one of which the sleeve can be mounted on it and in the other of which the sleeve is torsionally locked to it, the mandrel (1) comprising a core (2) the surface of which is covered with a deformable element (8), between this latter and said core there being provided a plurality of intercommunicating perimetral chambers (10) containing an incompressible fluid; the mandrel (1) internally houses presser means (20) arranged to pressurize said fluid in order to achieve the surface deformation of the mandrel (1) and the torsional coupling and locking of the sleeve, said presser means (20) being guidedly movable within the mandrel (1) and being activated by feeding into this latter a pressurized fluid.

Abstract: A cylinder cleaning apparatus expected to clean an external surface of cylinder by using a cleaning cloth which is fed from a cloth feed roll and expanded between the cloth feed roll and a corresponding cloth wind shaft. The apparatus is characterized to have a first axis driving the cloth feed roll to supply the cleaning cloth, a second axis driving the cloth wind shaft to wind the supplied cleaning cloth, and a power generation means for generating a rotation power for rewinding the first axis and winding the second axis in conformity with a displacement degree of a cloth feed arm swung by an actuator; and a shift means for selectively transmit the rotation power by the power generation means to the first axis or second axis.

Abstract: A doctor blade unit for the inking system of a rotary printing press includes a doctor blade carrier that is formed by a profiled rail with a channel-shaped recess. The doctor blade carrier is provided with two doctor blades that can be screwed to the carrier and moved down on an ink application roller as well as sealing elements at its ends. The face walls on the ends of the ink chamber which carry the sealing elements are provided with holes for accommodating a pipe that is provided with spaced apart holes that form spraying nozzles over its entire length. One end of the pipe is provided with a connection for supplying cleaning fluid.

Abstract: There is provided an adjustable, curved keyboard having arcuately arranged keys to complement naturally to a user's wrists, hands and fingers. The keyboard is supported by a bracket, which extends from underneath the desktop of a desk, for pivotal, elevational and horizontal adjustment of the keyboard's position relative to the user. The keyboard comprises an elongated base and alphanumeric keys positioned at an upper surface of the base. The base has a longitudinal axis disposed below the upper surface of the elongated base, and the upper surface is curved about the longitudinal axis. Also, the alphanumeric keys are arranged about the longitudinal axis of the base to form an arcuate typing surface that provides a comfortable typing surface for the user and reduces the risks of repetitive stress injury.

Abstract: A printing mechanism for recording images on a recording medium using an ink ribbon urged to follow a transport path, including a thermal head; a drive IC for driving the thermal head, at least a portion of the drive IC being disposed in the transport path; and an ink ribbon protection film disposed between the drive IC and the ink ribbon and for preventing the drive IC and the ink ribbon from contacting each other.

Abstract: A first pulse signal A of a first drive waveform used when an ambient temperature is 25.degree. C. or less has a peak value of 22 (V). The pulse width WA of the first pulse signal A matches with time T during which a pressure wave uni-directionally travels along the inside of an ink flow passage. A second drive waveform used when the ambient temperature is in excess of 25.degree. C. includes a second pulse signal B used for ejecting ink and a third pulse signal C used for compensating for variations in a residual pressure within the ink flow passage occurs after the ink has been ejected. Both the second pulse signal B and the third pulse signal C have a peak value of 22 (V). The pulse width WB of the second pulse signal B is 0.7 times the uni-directional propagation time T, whereas the pulse width WC of the third pulse signal C is half the uni-directional propagation time T. A delay time D between center time T1M of the second pulse signal B and center time T2M of the third pulse signal C is 3.

Abstract: A label printing device is disclosed in which font data for a plurality of characters is stored. Characters are derived from the font data for displaying and printing in sizes determined by appropriate scaling factors. In this way, characters derived for printing have the same proportion and appearance as characters derived for displaying. Moreover, a large variety of character sizes can be produced both for printing and displaying.

Abstract: The present invention relates to a two-piece keyboard wherein each piece mutually cooperates and reversibly engages with the other piece to rotate between a first configuration used for standard typing and a second configuration wherein the keyboard is portable. A guide mechanism and/or a spring loading mechanism can be employed to easily facilitate movement between the configurations and a locking mechanism can selectively lock the keyboard in either the first or second positions.

Abstract: A method and device for scanning, in connection with the production of a three-dimensional body, an outer contour of a rotating model with a scanning device operating at a scanning angle relative to the rotational axis of the model includes rotatably supporting the model such that the contour to be scanned on the model has a preparation line exposed to the angled scanning device; applying the scanning device towards a surface situated on the model below the preparation line; scanning the contour with the scanning device while simultaneously rotating the model and vertically moving at least one of the scanning device and the model with respect to each other during the contour scanning.

Abstract: A solid ink stick feed system for use in a color printer is disclosed that utilizes a plurality of ink stick feed receptacles in an ink stick feed bin of predetermined shapes corresponding to the plurality of shapes of the ink sticks such that an incorrectly matched ink stick shape or incorrectly oriented ink stick is retained in a raised position to indicate to the printer operator that the ink stick should be removed and to facilitate grasping and removing such ink stick.

Abstract: A sheet-conveying drum for use between units in a printing machine is provided with a plurality of gripper bridges arranged substantially circumferentially symmetrically on the drum surface. The gripper bridges hold the paper on the drum and include gripper impact strips that are adjustable substantially radially relative to the drum in order to accommodate printing materials of different thickness. Each gripper impact strip is adjusted by means of a positioning device that is arranged on the drum radially inward of the gripper impact strip and mounted so that it can move axially relative to the drum and cam the gripper impact strip radially. The axial movement of the positioning devices is brought about by two actuating devices which are mounted opposite each other on the side frames of the printing machine. The actuating devices are preferably pneumatic cylinders and are adapted so that when they are extended they periodically engage adapters on the free ends of the positioning devices as the drum rotates.

Abstract: The two beveled ends of a sheet-shaped flexible support, such as a printing plate, are inserted in a slit in a plate cylinder. A bore extends laterally adjacent the slit and carries an inflatable hose. The hose can be inflated to apply a holding force against the plate ends positioned in the cylinder slit.

Abstract: A printing system is provided which includes a printing head for applying at least one ink to a printing substrate and at least one radio frequency (RF) drying unit for discharging RF energy, thereby drying the ink on the printing substrate. A printing system is also provided which includes a printing and drying head for applying at least one ink to a printing substrate and for subsequently drying it. The printing system further includes means for moving the printing head with respect to the printing substrate.

Abstract: A method and apparatus for cleaning cylinders of a rotary printing machine, and particularly rubber-blanket cylinders, back up cylinders, plate cylinders and form cylinders. The cleaning device includes a housing having an orifice on one side and being moveable between throw-on and throw-off positions with respect to the cylinder, at least one jet device for introducing a cleaning agent in the form of pulverulent abrasive into the housing for forceful direction against the surface of the cylinder for removing impurities therefrom, and a suction device in close proximity to the housing orifice for drawing off and removing from the housing used cleaning agent and removed impurities.

Abstract: A thermal printer has a thermal line printhead, which contacts a recording sheet and creates images on the recording sheet. A platen roller is positioned in a fixed location and bears against the thermal line printhead. When a covering member is closed, the platen roller feeds the recording sheet against the thermal line printhead. The platen roller has a roller unit of rubber composition, the surface of which is coated with an adsorption preventing powder agent to prevent it from adhering to the thermal line printhead.

Abstract: A rubber blanket unit is structured having an underlying support plate with angled end legs, and an overlying rubber blanket with leading and trailing ends. The rubber blanket unit is secured to a blanket cylinder by insertion of the end legs into a thin cylinder slit. The rubber blanket ends are formed each having a reduced thickness and each further having a closure element. The leading and trailing blanket end closures cooperate to form an essentially seamless rubber blanket when the blanket unit is in place. The blanket ends are not dislodged by mechanical or chemical cleaning.