Siemens Aktiengesellschaft

Mannesmann Aktiengesellschaft

Ernst Goepel

Ferdinand Quella

Hans Hadersbeck

Rudolf Schierjott

Hans Kusmierz

Dietmar Pohlig

Heating mechanism for warming the ink in the write head of an ink

A print head of an ink jet printer is formed by a multilayer structure composed of a plurality of individual photoplastic films, segments of such films having a prescribed contour being removed by a photo-chemical treatment being defined on the individual photoplastic films in successive lamination procedures by the use of masks through which such photoplastic films are exposed. Passivation of unexposed films takes place after every lamination procedure by applying a light-absorbing solution. A three-dimensional structure is built up employing photoplastic films having thicknesses in the range between 10 .mu.m to 50 .mu.m and one or more masks having light transmissive regions which define a desired cross-section for the interior passages of the print head.

Method of manufacture for print heads of ink jet printers

The invention relates to a mechanism for rinsing the nozzles and the ink channels in the print head of an ink printer. A hose pump is composed of a revolute member which is driven by a drive element for the purpose of rinsing; for that purpose, the shaft of the drive element engages via a plug-in coupling and drives the revolute member; at least one puck is rotatably seated in the surface region of the revolute member; as the result of the puck, ink is pumped into the ink channels and nozzles of the print head at every revolution in a clock-wise direction; the drive can ensue motor-driven or manually.

Mechanism for rinsing an ink printing head

In a device for determining the angle of rotation of a rotating member by use of a perforated disk which corotates with the rotating member and intermittently interrupts a continuous beam of light directed at the perforations of the disk, an improvement comprises providing perforations of the disk which define light permeable and light impermeable areas such that a width of the light permeable areas is less than a width of the light impermeable areas, and a width of the light permeable areas is approximately the same as a width of an aperture at a light receiving station. A symmetrical output signal is obtainable so as to increase a resolution of the angle of rotation measurement.

Device for angle of rotation determination

A d.c. motor positions printing mechanisms. A circuit arrangement is provided in which a scanner disc, having peripheral slots, is arranged on the shaft of the motor and the slots are scanned by a scanner and counted in the positive direction and in the negative direction by a counter so that the position of the printing mechanism is determined. When the d.c. motor is decelerated and a generator voltage arises, the direction is determined by a rotation direction discriminator which evaluates the generator voltage and the zero transition thereof in the event of a change in the rotation direction of the d.c. motor. To control the direction of counting of the counter.

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Germering, Germany

Ernst Goepel