Abstract: A compensation device configured to attenuate pressure variations in an ink printing head is provided. The device includes a first compensation chamber containing ink and having a bottom, an outlet orifice extending through the bottom, and an inlet orifice opposite the bottom; a second compensation chamber containing ink and having a bottom, an inlet orifice extending through the bottom, and an outlet orifice opposite the bottom; and a vent means allowing outflow of air contained in the compensation chambers. The vent means includes a first opening in the first compensation chamber; a second opening in the second compensation chamber operable to be in a lower position with respect to the first opening when the device is in an operating position in which the bottoms of the compensation chambers define lower walls of the corresponding compensation chambers; and an intermediate chamber communicating with the first opening and the second opening.

Abstract: A compensation device configured to attenuate pressure variations in an ink printing head is provided. The device includes a first compensation chamber containing ink and having a bottom, an outlet orifice extending through the bottom, and an inlet orifice opposite the bottom; a second compensation chamber containing ink and having a bottom, an inlet orifice extending through the bottom, and an outlet orifice opposite the bottom; and a vent means allowing outflow of air contained in the compensation chambers. The vent means includes a first opening in the first compensation chamber; a second opening in the second compensation chamber operable to be in a lower position with respect to the first opening when the device is in an operating position in which the bottoms of the compensation chambers define lower walls of the corresponding compensation chambers; and an intermediate chamber communicating with the first opening and the second opening.

Abstract: Method for the controlled ink-jet spreading of polymeric material for insulation and/or protection of printed circuits, characterized in that it has at least the following steps: —carrying out at least a first bedding/bordering/border-line contour run of the circuit design, creating a line of outline/bordering design slightly raised from said printed board surface; —carrying out a subsequent filling/covering run of the outlined bordered design.

Abstract: A machine controlled by a computer for depositing a liquefied electronically-interactive material on a sheet or support card, which includes: a base (1) to support the mobile bed (2) which is moved longitudinally (Y) by means of a worm screw (20) whose movement is controlled by a computer, and for the support and fixing of the said support sheet or card “S” on which the layer of electronically-interactive material is to be formed; a bridge above the said base with a transversal shaft (30) which also has a worm screw and whose movement is also controlled by the said computer, in which the transversal shaft (30) moves the said distribution unit for the electronically-interactive material to be deposited (3) in an orthogonal direction (X).

Abstract: A machine controlled by a computer for depositing a liquefied electronically-interactive material on a sheet or support card, which includes: a base (1) to support the mobile bed (2) which is moved longitudinally (Y) by means of a worm screw (20) whose movement is controlled by a computer, and for the support and fixing of the said support sheet or card “S” on which the layer of electronically-interactive material is to be formed; a bridge above the said base with a transversal shaft (30) which also has a worm screw and whose movement is also controlled by the said computer, in which the transversal shaft (30) moves the said distribution unit for the electronically-interactive material to be deposited (3) in an orthogonal direction (X).

Abstract: A machine controlled by a computer for depositing a liquefied electronically-interactive material on a sheet or support card includes a base (1) to support a mobile bed (2) which is moved longitudinally (Y) by a worm screw (20) whose movement is controlled by a computer and which supports and fixes the support sheet or card “S” on which the layer of electronically-interactive material is to be formed. A bridge above the base has a transversal shaft (30) which also has a worm screw and whose movement is also controlled by the computer. The transversal shaft (30) moves the distribution unit for the electronically-interactive material to be deposited (3) in an orthogonal direction (X).

Abstract: Method for the controlled ink-jet spreading of polymeric material for insulation and/or protection of printed circuits, characterized in that it has at least the following steps: —carrying out at least a first bedding/bordering/border-line contour run of the circuit design, creating a line of outline/bordering design slightly raised from said printed board surface; —carrying out a subsequent filling/covering run of the outlined bordered design.

Abstract: An improved photoplotter for obtaining high resolution films from computer digitized images is equipped with active plate system with a plurality of luminous sources and a counter-plate which form an air cushion within which is inserted the film to be exposed. The film is supported on one side by a plotter movement system that moves it within a field of a portion of the entire image divided into a raster, so that the entire image can be obtained with the corresponding luminous sources.

Abstract: The object of the invention is to provide a machine for the control of printed circuits, of the type comprising a board bearing (1) a plurality of conductive needles that are connectable on their reverse side to analysis means of the electric parameters between one and the other needle, characterized in that are used two needle boards, one opposite to the other (1, 1′) and between them is positioned for the analysis the respective printed circuit card (2); and, one board is made movable respect to the other, the needles are axially movable.

Abstract: A machine for the electric testing a printed circuit board. The machine having a plurality of adjacent coplanar needle board pairs, wherein each of the plurality of coplanar needle board pairs has first and second coplanar needle boards to be located on opposite sides of the printed circuit board and a plurality of needles located on each of the coplanar needle boards. Each of the coplanar needle boards being independently movable from each other and the printed circuit board.