Printing equipment accessory, especially for making proof prints
AssigneeE. I. Du Pont de Nemours and Company
InventorsVolker Struwe, Ladislaus Wojtanowitsch, Gregor Gehrer, Thomas Brotzner
Life of this patent
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Abstract
A printing equipment accessory, especially for making proof prints, with at least two rollers forming a roller nip, through which is passed at least one function component of a film from a supply roll, the film having an auxiliary component in addition to the function component, whereby the function component is transferable in the roller nip onto a base. Reuse of the auxiliary component of the film is simplified by such an accessory. The auxiliary component of the film forms a coreless roll.
Claims11
Apparatus for making proof prints, with at least two rollers forming a roller nip, through which is passed at least one function component of a film taken from a supply roll, the film having an auxiliary component in addition to the function component, and the function component is transferable in the nip onto a base, characterized in that
- the auxiliary component of the film forms a coreless roll which is wound on a spindle with a variable outer diameter,
- friction rings are attached on a periphery of the spindle, and
- the spindle is supported in a vertical slot so that the friction rings contact the supply roll or drive rings attached thereto.
Apparatus for making proof prints, with at least two rollers forming a roller nip, through which is passed at least one function component of a film taken from a supply roll, the film having an auxiliary component in addition to the function component, and the function component is transferable in the nip onto a base, characterized in that
- the auxiliary component of the film forms a coreless roll which is wound on a spindle with a variable outer diameter where the spindle has a magnet that holds an end of the film with a keeper.
Process to reuse at least part of a film comprising a function component and an auxiliary component, the process comprising:
- separating the function component and the auxiliary component;
- winding the auxiliary .component as a coreless roll on a spindle having a variable outer diameter;
- reducing the outer diameter of the spindle;
- removing the coreless roll from the spindle;
- and
- reusing the coreless roll.
Apparatus for making proof prints, with at least two rollers forming a roller nip, through which is passed at least one function component of a film taken from a supply roll, the film having an auxiliary component in addition to the function component, and the function component is transferable in the nip onto a base, characterized in that the auxiliary component of the film forms a coreless roll wound on a spindle with a variable outer diameter, where the spindle has at least two curved sections spaced at a variable distance from a spindle axis, and guide rings that form a stop for the radially inward movement of the curved sections.
Dependencies are inferred from the claim text.