Abstract:
Described is a device (5) for lifting annular articles (21), in particular magnetic tape wound on disc-shaped spools, the device being made up of two single-piece halves, each of which comprises a handle element (6) and an element (7) designed to be inserted into the article, the two halves being linked together by a lever-operated connector (17). The device is easy to manufacture and to operate and is suitable for use with any disc-type or tape-type data-recording or other recording medium, such as magnetic discs, CDs, magnetic-tape spools and film spools (21).
Abstract:
A process is disclosed for reducing the abrasivity of a coated web of material. The web of material runs with its coated side over a deflecting roller (2) and is then treated with an abrasive surface, either along a contact path via guiding or deflecting rollers or along intermediate linear paths in contact with itself. By modifying the relative speeds of both surfaces, the web tension and the length of the contact surface, the abrasion effect may be appropriately adjusted. Rubbed-off particles lying on the surface of the web are sucked off.
Abstract:
An anti-copying film or layer is composed of a film or layer of transparent material with a plurality of mutually spaced, at least partially non-transparent areas whose planes are arranged in approximately the same position with respect to the surface of the film or layer, so that from a predetermined viewing angle the surface of the anti-copying film is substantially transparent. These areas are at least partially made of a photosensitive material converted by exposure to radiation into a non-transparent or reflecting material. Grooves or flutes in which the photosensitive material is located may also be provided in the transparent plastic material.
Abstract:
The invention concerns a film and/or layer which contains transparent and inclined opaque sectional zones and is produced by superposing and joining individual transparent and opaque or reflecting sheets and subsequently separating them. The preferred application of the invention is in anti-photocopying sheets or layers.
Abstract:
The description relates to package consisting of a two-part cardboard cut-out for pancakes. The base (1) and cover (2) sections have a central circular aperture through which a plastic core sleeve (6) is inserted. The pancakes are placed thereon in stacked array whereafter the cover section is laid on them and the side sections are folded upwards. Shrink-wrap film is drawn over the whole. In this manner the content of the package is protected against damage during transport by both the cardboard and the shrink-wrap film. The package is recyclable or re-usable.
Abstract:
An anti-copy film or coating for originals or documents consists of transparent film material with a plurality of spaced, at least partly opaque and possibly reflective regions arranged as coverings on the foil surfaces substantially staggered in the horizontal plane and especially mutually parallel, so that the information on an original beneath them is hidden when viewed vertically and visible when viewed from a predetermined angle. Suitable production methods permit the use of photographic methods.
Abstract:
A cassette with a sliding closure member has lug-like guiding elements that slide in guiding grooves provided in the housing. Each lug-like guiding element has an effective thickness larger than the thickness of the material. Such guiding elements are suitable for all recording media placed inside plastic housings, for data, audio or video information.
Abstract:
The invention relates to acicular, ferromagnetic, ferriferous and cobaltiferrous pigments which contain per 100 mol of the molar sum of iron and cobalt, 5 to 20 mol of cobalt, 1 to 5 mol of aluminium, 3 to 10 mol of silicon, 0.7 to 3.5 mol of phosphorus, and oxygen, the sum of the parts by weight of the elements iron, cobalt, aluminium, silicon, phosphorus and oxygen being 95 to 100 % by weight of the total weight of the pigments. The ferromagnetic pigments can also be used to prepare magnetic recording materials.
Abstract:
Described is a device to signal with an irreversible indicator that the permissible temperature for stored products has been temporarily exceeded. Thus, a container has a thermoconductive connection to the product to be monitored and contains in its interior a medium with a melting point just above the permissible temperature, magnetizable particles being suspended in the medium. There are also solid magnetizable bodies evenly distributed in the container. Once the chilling or freezing process has concluded, the magnetizable particles as well as the solid bodies are magnetized. If the permissible storage temperature is exceeded, the suspension is liquefied and the pigments settle in the solid bodies, so that in one wall of the container an optical indicator visible from the outside shows that the permissible temperature has been exceeded.
Abstract:
A container (5) for a photographic film is designed as a chamber (9) with a minimum volume that receives the film roll and has a sheath (11), a flat part (10) for supporting the threading end (19) of the photographic film in a direction as tangential as possible and a cover (7) that retains the end of the film. The unexposed photographic film may be easily removed from the container (5) and placed in this position into the camera. The container (5) may be advantageously used for returning the exposed photographic film to the photographic laboratory.