They generally consist of magazines that temporarily stock the cassettes to be unloaded and position them in front of an unlocking mechanism of an unloading station whereupon the exposed film sheet is gripped and introduced between a pair of rollers, guiding said film sheet over a discharge passage towards the entrance slit of an automatic processing machine for further processing. Several systems for automatically unloading X-ray cassettes in daylight have already been described.
In particular the invention concerns a cassette permitting an automatic unloading in daylight by means of simple mechanical means. This invention relates to a radiographic film cassette and more particularly to a radiographic film cassette intended for use in an apparatus for automatically unloading the cassette and feeding the exposed X-ray sensitive sheet material into the entrance slit of an automatic processing machine. An apparatus according to claim 6, in which said light source is a flash tube. An apparatus according to claim 6, including means actuated by the leading edge of said film sheet and connected to said light source for operating the latter.Ĩ. An apparatus according to claim 5, in which said marking means comprise a light-tight housing having an outlet opening coinciding with the path of the film sheet between said cassette and said entrance slot, a housing for data carrying means, a light source for illuminating said data carrying means and projecting means for projecting the image of said data carrying means onto said sheet of radiographic film material.ħ. An apparatus according to claim 1, in which means is provided to mark each sheet of radiographic film with identification data.Ħ. An apparatus according to claim 1, wherein sheet feeding means are disposed in said tunnel adjacent said entrance slot to feed said exposed sheet to said slot.ĥ. An apparatus according to claim 1, in which the tunnel is mounted in an inclined position in order to permit the sheet of radiographic film to fall out of the cassette under the force of gravity.Ĥ. An apparatus according to claim 1, in which said elongate strip is formed by a leaf spring.ģ.
Taal movie cassette cover free#
An apparatus for unloading under daylight conditions radiographic sheet film cassets of the type having exteriorly projecting cocking levers at their side into a processing apparatus having an entrance slot, comprising a tunnel in communication with said entrance slot for the reception of said cassette, a resilient strip disposed in said tunnel extending substantially over the tunnel width, said strip being fixed along one edge on the tunnel and projecting at the opposite free end into the interior of the tunnel in the path of said cassette locking levers for engagement with said levers as said cassette is introduced into said tunnel to open said cassette for the removal of the exposed film from the cassette and delivery to said entrance slot and light screening means to prevent ambient light from entering into said tunnel after said cassette is introduced therein.Ģ.
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