CS223459B1 - Clamp for fixing perforated film - Google Patents

Abstract

Film should be fixed when handling perforated film, especially when drying. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to fastening a perforated film with a horseshoe-shaped elastic clamp, which is easy to use even when attaching individual images without damaging the wet photosensitive layer. The resilient clamp in FIG. 1 is provided with arms (2) whose cross section permits their penetration through perforation holes of the perforated film. In standby position, the distance of the shoulders (2) is greater than the distance of the respective perforation holes of the perforated film. For secure locking of the film, the arms on the outer sides may be provided with recesses (3).

Description

The invention relates to a clamp for fastening a perforated film.

When handling perforated and film · especially when drying, it needs to be fixed · The hinges used so far are usually universal and make it possible to attach both non-perforated and perforated films · their disadvantage is that they are folded and several parts or have both disadvantages ·

Clamps touching the ae film in the surface cause His long drying in the spine of contact, and I do not suit the drying of the individual images. Mejaou-ll parts made with metal rust, subject to corrosion ·

Patent Application No. 6400 WDR discloses an aperture thereof. hooks are at a distance equal to the film perforation distance.

The drawbacks for fixing the perforated film and the resilient material of horseshoe shape are substantially eliminated by at least two arms. the cross-section allows the perforation holes of the perforated film according to the invention to be inserted, the essence being that the arms extending from the body are avoided such that the distance of at least a portion of the outer surfaces of the arms is greater than the distal edges of the respective holes of the perforated film. The outer surfaces of the arms can advantageously be provided with at least one pair of recesses ·

The advantage of the clamp for fixing the perforated film according to the invention is β-film contact Only at the edge of the film in the recesses · These points of contact dry in the same time as the other film surface, allowing rapid drying of the film *

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The flexible clamp can and preferably be made of a single piece of non-metallic material and has a close-up spring and allows to fix the individual wet and also after the bevelling of the photo-sensitive return.

On the vertebrae a 4-hole * perforated film

The at least two seams 2, which can be provided with recesses 2 on the outer surfaces, have at least a distance of not more than the distal edges 2 of the respective apertures of the perforated film in the standby condition. The elastic clamp body 1 allows for the elasticity of the elastic clamp to slide the arms 2 into the apertures of the perforated film by shifting! The distal edges 2 of the respective apertures of the perforated film and, when released, engage in the recess 2 of the arms 2. The tension of the arms 2 in the latched state is active in the plane of the film perpendicular to its longitudinal oau <> a perforated film Only On One Side, so that the stroke of the touches is applied in a straight line in the plane of the film parallel to its axis ·

Claims (2)

X ». A clamp for attaching a perforated film of horseshoe-shaped elastic material to at least two arms whose cross-section allows the perforation of the perforated film to pass through the apertures of the perforated film, characterized in that the arms (1) extending the arms (2) are bent so as (4) the arms (2) are larger than the distance of the distal edges (3) of the respective apertures of the perforated film · * Perforated filament clamp according to claim 1, characterized in that the outer surfaces (4) of the arms (2) are provided with at least one recess spring (3).