Siemens Aktiengesellschaft

Oce Printing Systems Gmbh

Siemens Nixdorf Informationssysteme Aktiengesellschaft

Gestetner Manufacturing Limited

Gerhard Klapettek

Siegfried Schneider

Ernst Puritscher

Walter Kopp

Hans Manzer

Rudolf Seeberger

Edward Morris

Klaus-Dieter Jorgens

Klaus Pachonik

Alfons Low

Martin Faust

Josef Eichstetter

Klaus Kummel

Klaus Kuemmel

Optical character generator for an electrographic printer or copier

Transfer printing station for parallel processing of two recording

Device for flattening single sheets in non-mechanical printer and

Printing apparatus for printing one or both sides of single sheets fed consecutively to the printing apparatus, with a printing channel with an associated printing station and paper-transport elements. The printing channel is coupled on the entry and exit sides to a return channel which has paper-transport elements and a turning device and which, as required, after the printing of a front side feeds the single sheets to the printing station once again for the printing of the reverse side. The printing channel is followed by a paper-transport channel system having paper-transport elements and with a separate duplex channel and simplex channel for the separate transport of the single sheets printed on both sides or on one side into a common output channel with a second turning station for the duplex sheets. The simplex channel has a paper storage device which stores a first single sheet printed on one side at least until a single sheet to be output via the output channel before this single sheet and printed on both sides has run through the duplex channel.

Single-sheet page printer for duplex and simplex operation

A photocopier scanning system has a scanning member (which may be the scanning lamp, a scanning mirror, a scanning slit, or a document carrier) on a scanning system powered by a d.c. drive motor synchronized to the rotation of the a.c. main drive motor for the other components of the photocopier. A variable programmer using a phase locked loop control circuit including pulse encoders slaved to the motors maintains strict synchronization between the scanning drive motor and the main drive motor with an appropriate proportionality dependent upon the image magnification/reduction ratio of the photocopier. The optical system may include a movable zoom lens element which gives infinitely variable selection of the magnification/reduction ratio, and which can readily be connected to the programmer to achieve an infinitely variable proportionality between the speeds of the scanning drive motor and the main drive motor to suit any such magnification/reduction ratio. Also the output of the exposure lamp is variable in accordance with the magnification/reduction ratio.

Photocopier scanning drive system

Growing community of inventors

Giessen, Germany

Gerhard Klapettek