Array Printers Ab

Digitron Ag

Anders G Ingelhag

Karin V Bergman

Tomas Jonsson

Lennart Sven Th&aring;lin

Andreas Wohlfahrt

Lennart Sj&ouml;stedt

G&ouml;ran Nybom

Krister Uvn&auml;s

Henrik Gustavsson

A direct electrostatic printing device and method print an image to an information carrier with improved alignment between printed part images from two or more print stations. The improved alignment is based on a basic mechanical alignment with a basic accuracy between the print stations which is improved by an electronic alignment of the corresponding bitmaps. The electronic alignment is made possible by the capability of at least one print station to print at least one additional dot in relation to the corresponding bitmap. The minimum number of additional dots being dependent on the attained basic accuracy of the basic mechanical alignment.

Direct electrostatic printing method and apparatus

An image recording apparatus includes at least one print station and an image receiving medium caused to move in relation to the print station. The print station includes a particle source for delivering charged particles in a position adjacent to a printhead structure interposed between the particle source and the image receiving medium. The printhead structure has a first surface facing the particle source, a second surface facing the image receiving medium, and a plurality of apertures arranged through the printhead structure. Aperture controllers are arranged in conjunction with the apertures to modulate streams of charged particles from the particle source through the apertures toward the image receiving medium. Depression areas are arranged on the first surface of the printhead structure in such a configuration that each aperture is arranged in a depression area. The part of the aperture facing the particle source is sunken with respect to the first surface of the printhead structure. The depression areas help maintain a uniformity in the thickness of a toner layer on the particle source.

Apparatus for positioning a control electrode array in a direct

An image recording apparatus includes a toner particle source for delivering charged toner particles to an image receiving medium. The image recording apparatus further includes a printhead structure arranged between the toner particle source and the image receiving medium to modulate a transport of toner particles from the particle source to the image receiving medium. The printhead structure includes a substrate of electrically insulating material having a first surface facing the toner particle source and a second surface facing the image receiving member. A first cover layer of electrically insulating material is arranged on the first surface of the substrate. A plurality of apertures are arranged through the printhead structure. A first printed circuit including control electrodes is arranged between the substrate and the first cover layer to control the transport of toner through the apertures and a spacer layer of wear-resistant material at least partially coats the first cover layer to space the first cover layer from the toner particles on the particle source.

Printhead structure in an image recording device

Method and device for taking up articles. The apparatus or device comprises a vehicle running on tracks and mounted to the vehicle are a tilting member, a receiving table and an intermediate storage portion, with the tilting member tilting an article to be picked up, the receiving table entering the gap therebelow, holding same, retracting same, and transferring same to the intermediate storage portion, with the apparatus being actuated such that the tilting member can already start tilting a next article while the receiving table is still busy with a previous article, and the intermediate storage portion can be operated independently from the receiving table, this making it possible to manipulate several articles simultaneously and to thereby increase the pick-up rate.

Method for taking up articles

Method and apparatus for taking up articles wherein the apparatus includes a receiving table with conveyor belts, an auxiliary member located thereabove and a holding assembly located above the article, wherein, for taking up the article, a pressing member of the holding assembly is pressed onto a rearward part of the article from above, and the auxiliary member is pressed against its upper front face, whereupon the auxiliary member is moved upwardly while still pressing against the article, thereby tilting the article about an axis located close to its upper rear edge, thus displacing the receiving table into the gap opening below the article and loading same onto its conveyor belts. The method allows the take up of package-shaped rigid articles, without requiring additional room behind the article and is especially suited for successively handling a plurality of articles located behind each other.

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Goteborg, Sweden

Anders G Ingelhag