Ta Triumph-adler Aktiengesellschaft

Triumph-adler A.g.

Triumph-adler A.g. Fur Buro-und Informationstechnik

Wilfried Rettke

Manfred Moritz

Ladislav Tunys

Richard Horman

Manfred Hubner

A ribbon and correction tape are separately mounted on a typewriter for movement in closely spaced parallel planes from a position below a line of impact along a line of print to an elevated position opposite said line of print. To minimize interference and malfunctions during relative movement of the ribbon and tape during elevating movement of one, the ribbon and tape are supported at an acute angle to one another, thereby to move in scissor fashion relative to the other.

Malfunction preventing arrangement of ribbon & correction tape

Function controlled raising and transporting mechanism for the selective control of a print ribbon or correction tape by means of a power drive and freewheeling clutches operative to effect print ribbon or correction tape transport incident to carriage motion in print direction only. In certain commanded functions such as spacing, tabulating, etc., both the print ribbon and correction tape transports are disabled by moving output elements of the freewheeling clutches to intermediate clutch disabled positions to thereby realize optimum utilization of the ribbon and tape capacities.

Mechanisms for selectively raising and transporting print ribbons and

A method and apparatus for indexing the print hammer of typewriters or the like having a carriage supported type matrix positionable in X-Y directions to present a selected character for printing wherein the matrix positioning motor is used to index the hammer in advance of matrix positioning movement.

Method and apparatus for indexing the print hammer of typewriters or the

The invention concerns a mechanism for raising and feeding different types of ink ribbons in typewriters and similar machines. With a simple design and using only one motor under programmed control, the mechanism is capable of utilizing ink ribbons economically, e.g. printing alternately in several printing zones of a ribbon or in several colors. It also feeds ribbon by a length which corresponds to the type of ribbon, or type of operation, e.g. proportional typing. The starting point for the various functions is a basic position to which the mechanism is positioned by the motor.

Mechanism for raising and feeding ink ribbons in typewriters and similar

A drive system to raise and transport both print and correction ribbons on typewriters or like machines is powered by a single bidirectional stepping motor. In one direction of rotation the motor acts via a special action clutch to first drive mechanisms for raising a print ribbon and then to establish gear connections for driving mechanisms for transporting the print ribbon. In the other direction, the motor acts to establish gear connections for driving mechanisms for raising and transporting a correction ribbon.

Print and correction ribbon drive system

A device for monitoring paper feed movement in typewriters, printers or other paper-feeding apparatus, e.g. photocopiers wherein paper sheets inserted between a rotatable platen and pressure rollers are driven incident to rotation of the platen. A signal generator has a driving roll of the same size as the pressure rollers and axially aligned therewith which is prevented from being driven by the platen by the interposition of a narrow stationary belt positioned between the platen and drive roller adjacent one end of the platen. When paper is inserted a side edge passes between the belt and the drive roll and movement of the paper incident to platen rotation drives the drive roll of the pulse generator which monitors paper movement. If there is no paper movement due to paper jams or the end of a paper sheet is reached this condition is detected by the absence of pulses at the output of the pulse generator. The absence of pulse sequences serve to shut down the machine.

Growing community of inventors

Altdorf, Germany

Wilfried Rettke