Typewriting machines – Sheet or web – For feeding web record-medium
Patent
1991-10-03
1994-10-25
Wiecking, David A.
Typewriting machines
Sheet or web
For feeding web record-medium
4006132, 226197, 346136, B41J 1504
Patent
active
053583469
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention relates to a paper-separating device for prefolded continuous paper which is drawn from a stockpile by a paper-transport device and is fed to a printer, such as a non-mechanical printer or photocopier.
2. Description of the Related Art
In high-speed printers, such as used for example in data systems technology, whether it be non-mechanical high-speed printers such as laser printers, photocopiers or the like, it is usual to use prefolded continuous paper, so-called continous fanfold stock as recording carrier. The paper is delivered prefolded as a stack and stored on a stacking surface of the printer. From this stacking surface it is then fed via a corresponding motor-driven feed device to the printing area of the printer. The prefolded paper has on its edge perforations which engage in the feed device of the printer.
When drawing paper from the stack, it may occur that individual layers or sheets of the paper stacked remain stuck to one another so that the paper web does not extend completely which can lead to faults in the paper-transport device.
A paper-separating device of the type mentioned at the beginning is known from DE-PS 34 06 261.
In this known paper-separating device, its rigid arrangement is disadvantageous. As a result, the feeding in and insertion of the paper is complicated because it has to be guided through narrow channels.
SUMMARY OF THE INVENTION
The object of the invention is to provide for printers of the type mentioned at the beginning a paper-separating device which is of ergonomically favorable design so that the continuous paper can easily be inserted.
This object is achieved in a paper-separating device of the type mentioned at the beginning in which the paper web is guided between the paper-transport device and the stockpile in a first deflecting direction via a first deflecting element, the deflection radius of which being dimensioned in such a way that paper layers which adhere together in an undesirable way are fanned out and that a further, second deflecting element which deflects the paper web in the first deflecting direction is arranged downstream of the first deflecting element in the direction of paper-transport, wherein the first deflecting element is arranged swivellably and the second deflecting element in stationary fashion in the swivel area of the first deflecting element, and in an insertion position assigned to the swivelled position (position A) of the first deflecting element, the paper web can be inserted into the paper-transport device and wherein, when the first deflecting element is swivelled into an operational position (position B) with the swivelled-in first deflecting element, the deflecting element grips the paper web on one side and places it in the area of the second deflecting element.
Advantageous embodiments of the invention provide that the first deflecting element is arranged at a free end of an actuation rocker. The actuation rocker may have paper-guiding elements. Preferable, the actuation rocker is mounted so as to swivel in such a way that in the insertion position (position A) the paper elements of the actuation rocker, together with further paper-guiding elements of the paper-transport device, form an insertion channel for the paper web.
The deflecting elements of one embodiment are constructed as paper rollers. Another feature of the invention is an actuation handle on the actuation rocker with an assigned locking device for the operational position (position B).
Opposite the first deflecting element, a paper-guiding element is arranged at a distance to form a passage for the paper web.
The paper-guiding element preferably forms part of a collecting tray.
With the paper-separating device according to the invention, the continuous paper can be inserted particularly easily into the printer. For this purpose, the first deflecting element which is arranged at the free end of an actuation rocker is swivelled by means of the actuation rocker and the paper is easily inserte
REFERENCES:
patent: 4699496 (1987-10-01), John et al.
patent: 4729681 (1988-03-01), Moser
patent: 4860031 (1989-08-01), Lejcek
Rumpel Peter
Schmidt Ludwig
Siemens Nixdorf Informationssysteme AG
Wiecking David A.
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