Heidelberger Druckmaschinen Ag

Linotype-Hell Ag

Dr. Ing. Rudolf Hell Gmbh

Holger Suhr

Axel Heuer

Jörg-Achim Fischer

Rainer Schielke

Jörg Suhr

Udo Wurdemann

Ulrich Parl

Manfred Deisler

Wilhelm Paulsen

Christian Matthiesen

Helmut Lange

Timo Ihfe

Burghart Schnabel

Horst Lachenmann

A packaging machine seals goods in blister shell moldings with a blister film. The packaging machine contains a first transport system for a blister film web, a second transport system for blister shell moldings, and a sealing apparatus, the effect of which is to connect a blister shell molding to a portion of the blister film web. A printing apparatus is provided for applying optical information to the blister film web. A dancing roller system is provided for motional decoupling and disposed between a position at which the printing apparatus prints on the blister film web and the sealing apparatus along the blister film. The printing apparatus and/or the first transport system for the blister film web contains an apparatus for insulating against occurring vibrations of the rest of the packaging machine at the position at which the printing apparatus prints on the blister film web.

Packaging machine for goods in blister shell moldings to be sealed with a blister film

A method is disclosed for printing a blister film web in a packaging machine, in which molded blister shells are closed with blister film. In the method, a blister film web is supplied to a sealing apparatus via a first transport system, and molded blister shells are supplied to the sealing apparatus via a second transport system. The position of one of the molded blister shells is detected, and at least one detection signal is generated in one or more time intervals between the action time intervals of the sealing apparatus for closing the molded blister shells. A trigger signal for a printing device is generated in dependence on a detection, and optical information is applied to the blister film web by the printing device at a position along the blister film web which is arranged upstream of the sealing apparatus.

Method for printing a blister film web in a packaging machine

In a method for white balance of an optoelectronic color scanner element of a color scanner device for pixel-by-pixel and line-by-line scanning of a color original rated voltage values are calculated from the optical densities of the white point of the color original and a predetermined white level. Scan light that represents the optical density zero of the color original is simulated with an illumination means and is converted in actual voltage values in a light/voltage transducer means. The gains of the light/voltage transducer unit are set such and held constant for the duration of the following originals' scanning such that the actual voltage values are equal to the calculated rated voltage values, it being thereby achieved that the color signals of the white point correspond to the white level in the later scanning of the original. For light attenuation of the simulated scan light, scan diaphragms of a diaphragm wheel employed as balance diaphragms can be additionally introduced into the beam path of the scan light.

White balancing method

In a method and an apparatus for point-by-point and line-by-line scanning of a master chucked on a scanner drum, for pixel-by-pixel illumination of the master, a light spot is generated in a light conductor and is imaged onto the master as illumination spot. The light conductor is arranged displaceable with an actuating drive for the purpose of modifying the imaging scale of the illumination spot. For setting the illumination, the luminance of the illumination spot is measured with the opto-electronic scanner element. In a computer, control signals for the actuating drive are generated dependent on the measured luminance. For setting the optimum illumination of the master, the imaging scale of the illumination spot is modified such by displacing the light conductor that the measured luminance of the illumination spot is maximum.

Method and apparatus for scanning masters

In a process for calibrating an optoelectronic scanning member of a scanner which scans an image point by point and line by line and converts the modulated scanning light into image values in a light/voltage converter, converter densities are first determined and stored as a converter density table depending on different degrees of amplification of the light/voltage converter. The densities of the scanning diaphragms and grey filters used are also determined and stored as diaphragm density and grey filter density tables. A scanner-specific calibration is carried out with a reference diaphragm by adjusting the degree of amplification so that the image value corresponds to a predetermined white level. When a document-specific calibration is later carried out, the required amplification is automatically determined from the stored density tables and the white point density of the document in question. The light/voltage converter is then adjusted accordingly. This calibrating process considerably shortens the time of preparation required for scanning a document and discharges the operator from routine calibration tasks.

Process for calibrating a scanner

Method for white balance

A method and apparatus for setting sharpness of an optical image system by step-by-step adjustment of the distance between a subject and an objective until a maximum is achieved for respectively identified sharpness values of the objective.

Method and apparatus for setting the sharpness of an optical imaging

A method and an apparatus for setting the sharpness of an optical imaging system by step-by-step adjustment of the distance between a subject and an objective and by evaluating the sharpness values identified for the individual distances. First, the sharpness values (S) for two distances (R) modified proceeding from a prescribed distance (Ro) by a respective step width in both adjustment directions are identified and the best sharpness value is determined by comparing these sharpness values (S) to the sharpness value (So) for the prescribed distance (Ro). Respectively two distance points (R1 through R4) having defined step widths proceeding from the prescribed distance (Ro) are then identified in an allowed range of adjustment (VS) and the appertaining sharpness values (S1 through S4) are identified. After this, straight lines (G1; G2) are placed through respectively two of the sharpness values (S1 through S4) to the left and right of the sharpness value (So), these being the tangents at the function curve (V) of the sharpness values (S) dependent on the distances (R). The intersection of the straight lines (G1; G2) and the distance value (Rmax) belonging to the intersection are then identified, this yielding the maximum sharpness value (Smax).

A light transmission device for transmitting light from a stationary light source to a movable recording element of an electronic reproduction device composed of at least one fiber optical light waveguide and one guide element for the fiber optical waveguide. Due to the motion of a fiber optical waveguide, inhomogeneous light distributions arise at its exit face, this leading to disturbing streaked exposures of the recording medium. In the present invention to avoid such streak-like exposures, it is proposed that the guide element be a metal band which is mounted in a U-shape with the fiber optical waveguide being connected to one side of the metal band. Thus, as the recording element shifts, the curvature of the fiber optical waveguide remains constant to prevent shifting of the light distribution exiting the fiber optical waveguide.

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Kiel, Germany

Holger Suhr