Oce Printing Systems Gmbh

Siemens Nixdorf Informationssysteme Aktiengesellschaft

Oc&eacute; Printing Systems Gmbh

Other

Océ´ Printing Systems Gmbh & Co. Kg

Otto Ferber

Hans Manzer

Josef Schreieder

Vilmar Eggerstorfer

Peter Bergmann

Walter Kopp

Martin Berg

Stefan Scherdel

Heiner Reihl

Franz Kastner

Stefan Maier

Franz Hintler

Robert Pichlmeier

Albrecht Gerstner

Winfried Topp

Attila Bogdan

Peter Konig

Uwe Milling

In a digital printer, print groups are provided each having a respective developer station using liquid developer comprising carrier fluid and toner. A supply arrangement to supply the print groups is provided with fluids and to accept used and unconsumed fluids from the print groups. The supply arrangement has a first supply unit common to all print groups to supply the print groups with the fluids, at least one reservoir containing a carrier fluid. A second supply unit per color supplies the respective print group for the color with liquid developer. The second supply unit comprises a first buffer container connected with a reservoir, the reservoir containing carrier fluid and concentrated toner as toner concentrate. A second buffer container for carrier fluid is connected with the carrier fluid reservoir in the first supply unit. A mixing unit is connected with the first and second buffer containers for mixing together the liquid developer, the mixing unit being connected via a feed pump to supply the liquid developer for the color to the respected developer station of the respective print group.

Digital printer with supply arrangement to supply print groups with fluids and to accept used and unconsumed fluids

An electrographic printer using a print web medium is provided with a web adjusting apparatus having a geared motor for adjusting the web position. A method and apparatus to compensate for backlash in the geared motor includes a sensor to detect an end position of rotation of the geared motor. A time being determined from a point of reversal of the geared motor to a decay in the sensor output indicating a gear backlash, and the time being added to the drive of the geared motor when reversing directions to adjust the web position.

Method for compensating a gear backlash and apparatus for carrying out said method

To be able to insert bands of an arbitrary length into a machine unit, for example intermediate carrier bands given an electrophotographic printer device, the band is seated on tubes. The tubes are pushed into receptacles arranged in the machine unit. The band can then be slipped over the transport and guide drums arranged in the machine unit. Subsequently, the band is tensed and the tubes are pulled from the receptacles.

Device for inserting a band into a machine unit

A method and apparatus for controlling a lateral position of a band-shaped intermediate image carrier in an electrographic apparatus by regularly detecting a mark on the intermediate image carrier with a sensor. The band-shaped intermediate image carrier is moved in a transport direction from an image generating position at which an image is generated on the image carrier to a transfer position at which the image is transferred. A transverse position of the intermediate image carrier relative to the transport direction is detected and is time correlated with the regular detection of the mark. Intermediate position detections are carried out between the regular detections of the mark in a time-controlled manner. The detected positions are compared to stored position values or calculated theoretical position values and the results of the comparison is used to control position correction devices which change the transverse position of the intermediate image carrier.

Method and controlling means for regulating the position of a band-shaped image carrier in an electrographic apparatus

A printer or copier and method generates toner images for transfer onto a recording medium. A latent charge image is generated on a photoconductor and is developed by the application of toner by at least one developer station to generate the toner image for transfer to the recording medium. A plurality of the developer stations are provided along the photoconductor to develop the images in color using a color separation method. A transfer band collects the color separations on top of one another to generate the overall toner image which is transferred to the recording medium. Multiple modules, each with developer stations, a photoconductor and a transfer band may be provided for one sided or two sided printing.

Printer and copier device and method for performance-adapted, monochrome and/or chromatic, single-sided or both-sided printing of a recording medium

Turn-over means for band-shaped recording media

A turnover device is provided having a W-shaped arrangement of hollow rod-like deflector rods and reverser rods with an automatic threading device. The turnover device receives continuous paper in an admission slot, self-threads the paper therethrough, and returns the paper through a discharge slot in a flipped-over manner for use with a multi-functional, electrographic printer device for printing a web-shaped recording medium in simplex and duplex printing. The rods are preferably hollow with air holes to provide an air cushion between the rod and paper. Guide channels are also preferably disposed over each rod to guide the paper thereover.

Turnover device for web-shaped recording media

Printing or copying machine with a belt-type transfer element with

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Germering, Germany

Otto Ferber