Atotech Deutschland Gmbh

Schering Aktiengesellschaft

Egon Hubel

Rudolf Kreisel

Karl-Heinz Sturm

In order to avoid an edge-effect (increased electrical field line density at the edges of electrolytically to be processed work pieces) during the electrolytic processing of work piecesin a conveyorized system, the electric currents originating from various counter electrodesin the plant are set to values in function of the electrolytically to be processed surface areas of the work piecesas far as they are located directly opposite the respective ones of the various counter electrodes. Moreover, the distance between the work piecesand the counter electrodesis chosen to be 50 mm maximum. Meansfor individually controlling and adjusting every single current supply unitof the counter electrodesare provided for this purpose. Said meansare configured in such a manner that the respective electric currents originating from the various counter electrodesare settable to values in function of the electrolytically to be processed surface areas of the work pieces, as far as they are located directly opposite the respective various counter electrodes

Method and conveyorized system for electorlytically processing work pieces

For manufacturing printed circuit boards and filmswith little variations in the layer thickness of the circuit structures without damaging the surfaces of the boards and films, a rotatory element, more specifically a contact roll, is used for placing the printed circuit boards and films in electric contact, an elastic, electrically conductive materialbeing at least partially applied on the running tread unreeling on the printed circuit boards and films.

Elastic contact element

For electrolytic treatment of electrically mutually insulated, electrically conductive structureson surfaces of electrically insulating foil material (Fo), is unloaded from a store, transported on a conveying line through a treatment unitand brought in contact with treatment fluid F. During transportation, the material Fo is guided past at least one electrode arrangement, having at least one cathodically polarised electrodeand at least one anodically polarised electrode, both being brought in contact with the treatment fluid Fand being connected to a current/voltage source. Current flows through the electrodesand the electrically conductive structures. The electrodesare screened from each other so that substantially no electric current is able to flow directly between oppositely polarised electrodes. The material Fo is finally loaded back onto a store

Method and device for the electrolytic treatment of electrically conducting structures which are insulated from each other and positioned on the surface of electrically insulating film materials and use of the method

For electrolytic treatment of circuit boards and foils LP, a method and a device are used in which the sheets and foils are transported through a treatment unit and brought thereby in contact with treatment fluid. The sheets and foils are guided during transportation past at least one electrode arrangement, which comprises respectively cathodically polarized electrodesand anodically polarized electrodes, the cathodically and anodically polarized electrodes also being brought in contact with the treatment fluid. The cathodically polarized electrodes and the anodically polarized electrodes are connected to a current/voltage source, so that a current flows through the electrodesand the electrically conductive surfaces

Method and device for the electrolytic treatment of electrically conducting surfaces separated plates and film material pieces in addition to uses of said method

To electrically contact and electrolytically treat, more specifically to electroplate, very thin, electrically conductive layers, especially with a high electrolytic current, a device comprising contact carriers, more specifically clamps, clips and like, with contact elements for supplying the current to the work is utilized, and at least the contact areas of the contact elements that may be brought to contact the work are made from an elastic, electrically conductive material.

Electrical contacting element made of an elastic material

The invention relates to carriers serving to supply current to workpieces to be treated electrolytically or counter-electrodes and a method for the electrolytic treatment of workpieces. The carriers according to the invention comprise at least three elongate electric current conductors, disposed parallel to one another, a first current conductor being configured in such a way that the workpieces or counter-electrodes can, for supplying electric current or for mechanical attachment, be attached to the conductor directly or via holding devices, respectively a second to nth current conductor is provided, the second current conductor being connected to the first current conductor, the third current conductor to the second current conductor etc. via respectively at least one electrically conductive connection, in such a way that electric resistances existing between connections between the first and the second current conductor on the one hand and connections between the (n&minus;1)th and the nth current conductor on the other hand are of the same size, and the nth current conductor is connected to the (n&minus;1)th current conductor via an electrically conductive connection roughly in the centre of the (n&minus;1)th current conductor and electric power leads are provided from a current source at at least one end of the nth current conductor.

Carrier serving to supply current to workpieces or counter-electrodes that are to be treated electrolytically and a method for electrolytically treating workpieces

Process and circuitry for generating current pulses for electrolytic

A method for compensating variations of branch currents in an electrolytic bath and hence for improving the uniformity of metal layers deposited on articles, provides a compensating passive resistor having a resistance value exceeding the resistance of respective electroplating branch circuits, in series with each branch circuit. The total electroplating current is adjusted to the nominal branch currents whereby the magnitudes of the latter is determined predominantly by the compensating passive resistors.

Method of and device for compensating variations of branch currents in

A method of feeding information into data processing means of an automatic galvanizing installation about articles to be treated, includes the fixing of the information onto each article before the article is supplied to the installation. In the charging station of the installation, the applied information is read by a hand-operated, commercially available data reader.

Method of and device for feeding information about articles to be

A multi-phase regulating transformer is disclosed having a plurality of windings cooperating with stepping trolleys which are driven by a common driving member. To obtain fine adjustment of the output voltage, the trolleys are coupled to the driving member with different plays to introduce a dead travel of the driving member relative to at least one trolley, which exceeds the spacing between two adjoining individual windings of the transformer.

Device for the fine adjustment of the output voltage of multi-phase

An arrangement for processing information pertaining to articles to be treated in automatic electroplating plants with work stations, article transport means, and article storage or holding locations. To each transport device and each location in the electroplating plant, there is assigned at least one storage unit which is logically connected with the central control unit and with the transport device circuit elements triggering the transport operation. It is also connected with the article storage or holding locations. The prevailing information pertaining to the articles treated is always inserted in that storage which is assigned to the transport device or to the location where the article is positioned at that time.

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Feucht, Germany

Egon Hubel