Other

Eastman-kodak Company

Pelikan Produktions Ag

Oce Printing Systems Gmbh

Technische Universitaet Muenchen

Oc&eacute; Printing Systems Gmbh

Tally Computer Drucker Gmbh

Joachim Heinzl

Alfred Zollner

Robert Link

Bernhard Hochwind

Ingo Ederer

Wolfgang Schullerus

Bernd Schulz

Michael Muth

Arno Steckenborn

Manfred Wiedemer

Helmut F Schlaak

Peter Krause

Hubertus Feussner

Joachim Kretschmer

Peter M&ouml;stl

Ernst Obermeier

Carsten Tille

Josef Grasegger

Wolfram Runge

Ulrich Hausmann

Hans W Potzlberger

Robert Paspa

Hermann Seitz

Gerhard Beurer

A self-piercing blind rivet is provided for apposing biological tissue together with a device for setting the same, especially through the instrumental channel of a flexible endoscope. Without the help of further instruments, it is possible to fix, approximate and appose tissue layers, the contact force while connecting the tissue layers being adjustable. The rivets are stored in the setting device, so that they can be applied in order. The rivet and setting device enable the surgeon to combine tissue discontinuities conveniently by means of an endoscope. The surgical procedure is simplified further because the rivets can remain in the body.

Blind rivet for adapting biological tissue and device for setting the same, in particular through the instrument channel of an endoscope

A printer includes a printer carrier having a surface for receiving ink for transfer printing onto a carrier material, such as paper. Areas of the surface print carrier are ink attracting and others are made ink repelling. The ink repelling areas are formed by providing the surface with a layer of a substance in a solid phase, such as water in the form of ice. The ice layer repels the ink as it is applied so that the ink is only held on the surface of the print carrier at the areas that are ice free. The ice layer is formed by cooling the surface using a cooling mechanism to form a coating of frost due to condensation. A surface tension reducer for water is coated on the surface prior to cooling the surface. A laser or other radiation emitter structures the ice layer to form the print image.

Method and apparatus for printing a carrier material upon employment of a structure ice layer

Disclosed is a piezo bending transducer drop-on-demand print head and a method of actuating it. Each of the piezo bending transducers of a piezo bending transducer drop-on-demand print head is subjected to a sequence, corresponding to the desired print image, of triggering pulses each effecting a drop discharge movement and, assigned to each triggering pulse, each piezo bending transducer neighboring the piezo bending transducer triggered by the triggering pulse is subjected to a compensating pulse deflecting it. The piezo bending transducer drop-on-demand print head has a nozzle plate with nozzles arranged in series. Respectively assigned to each nozzle is a piezo bending transducer which can be subjected to a triggering pulse accompanied by a drop being discharged from the respective nozzle. There is a control device by which each of the piezo bending transducers can be subjected to triggering pulses and compensating pulses in accordance with the method of the invention.

Piezo bending transducer drop-on demand print head and method of actuating it

Method and device for printing on a carrier material using a structured ice layer

The printhead has a multitude of adjacently arranged channels with piezo-electrical shear converters. The impulse form for activation of the converters&mdash;depending upon the number of simultaneously activated neighboring channels&mdash;is changed in such manner that the exit velocity of the ink droplets is constant. This makes it possible to obtain a better print image.

Method of controlling piezo elements in a printhead of a droplet generator

Process for printing a carrier material

Droplet mist generator

Variation of ink droplet velocity and droplet mass in thermal ink-jet print heads having at least one primary heater element is achieved by means of a circuit for generating time-shifted heating pulses. The heater element structure is such that there is at least one secondary heater element in addition to and physically separated from each primary heater element. The circuit for generating time-shifted heating pulses for the primary and secondary heater elements applies those pulses in such a way that a vapor bubble has already formed in the printing fluid on the secondary heater element at the point at which a vapor bubble starts to form in the printing fluid on the primary heater element.

Method and apparatus for variation of ink droplet velocity and droplet

Ink-jet printing head for a liquid-jet printing device operating on the

A droplet generator includes a housing (1) wherein there are attached at their one end a multitude of piezo-electric flectional-benders (19), arranged next to each other. A second end (16) of each of the benders (19) is located above a separate jet (7) which leads from a chamber (5) to the exterior. Between the individual benders (19) there are installed separation walls (26). Any cross communication as a result of viscous coupling between benders or due to pressure fluctuations is avoided and the efficiency is improved, so that a better graphic image is attained. The benders have an electrically insulating coating, so that the droplet generator is also suitable for electrically conducting inks.

Droplet generator for generating micro-drops, specifically for an

An aerostatic bearing includes a thin material thickness area having a bearing surface and a back side opposite to the bearing surface, and a plurality of nozzle-forming microholes formed in the thin material layer and having a conical cross-section, with the microholes being drilled with a laser beam applied from the back side, and with the most narrow section of the microholes being located on the bearing surface.

Aerostatic bearing and method of manufacturing an aerostatic bearing

A method for manufacture of at least one micronozzle in an aerostatic bearing, wherein at least one hole is placed into a compacted bearing surface from porous sintered material by means of a laser beam and disposed so as to be distributed across the surface. The holes distributed across the compacted bearing surface constitute micronozzles of an aerostatic bearing.

Method for manufacture of at least one micronozzle in an aerostatic

An electrothermal ink jet print head is constructed in layer structure, wherein the expansion direction of the ink vapor bubble is directed opposite to the ink-ejection direction. Each ink channel (16) of the ink jet print head is supplied with ink by flow throttles for a highest degree of effectiveness. For this purpose, a cover plate (1) is furnished with openings (2). The openings (2) join into an ink storage container. The openings (2) are connected with recess openings (25) to the ink channel (16) in the chip (11). Selectively, the recess openings (25) can be furnished in the chip (11) or in the cover plate (1). A method is provided for producing the recess openings (25).

System for an electrothermal ink jet print head

A miniature air bearing for supporting and guiding parts has a bearing surface of monocrystalline silicon. Nozzles are formed on the bearing surface by means of anisotropic etching for feeding air.

Miniature air bearings

Growing community of inventors

Munchen, Germany

Joachim Heinzl