Photocopy device

Claim 1

IN A COPYING DEVICE, AN EXPOSURE CHAMBER COMPRISING A PAIR OF REFLECTIVE FACING SIDE WALLS, CONNECTING MEANS CONNECTING SAID SIDE WALLS TOGETHER ALONG ONE PAIR OF ADJACENT SIDE EDGES FOR SWINGING OPENING-AND-CLOSING MOVEMENT OF SAID SIDE WALLS BETWEEN A GENERALLY PARALLEL CLOSED POSITION AND ON OPEN POSITION DIVERGING FROM SAID CONNECTION MEANS, EXPANSIBLE AND CONTRACTILE END WALLS EXTENDING BETWEEN ADJACENT END EDGES OF SAID SIDE WALLS FOR EXPANSION AND CONTRACTION UPON OPENING-AND-CLOSING MOVEMENT OF SAID SIDE WALLS, ILLUMINATING MEANS CARRIED BY SAID CONNECTION MEANS, A TRANSPARENT PLATE EXTENDING IN OPEN POSITION BETWEEN THE OTHER PAIR OF ADJACENT SIDE EDGES OF SAID SIDE WALLS AND CONNECTED TO ONE OF SAID SIDE WALLS FOR SWINGING MOVEMENT TO A CLOSED POSITION IN A PARALLELISM BETWEEN SAID SIDE WALLS, WHEREBY SAID PLATE IS ADAPTED TO REST FLAT ON COPY MATERIAL FOR CONCENTRATED ILLUMINATION OF THE LATTER THROUGH SAID PLATE, HINGE MEANS CONNECTING SAID PLATE TO SAID ONE SIDE WALL FOR SAID SWINGING MOVEMENT, AND RELEASABLE DETENT MEANS ON SAID OTHER SIDE WALL ENGAGEABLE WITH SAID PLATE TO RELEASABLY HOLD THE LATTER IN SAID OPEN POSITION, A SUPPORT PANEL DETACHABLY CONNECTED TO SAID HINGE MEANS FOR SWINGING MOVEMENT INTO AND OUT OF UNDERLYING RELATION WITH SAID PLATE WHEN THE LATER IS IN OPEN POSITION, AND A YIELDABLE FACING ON SAID SUPPORT PANEL ENGAGEABLE WITH THE UNDERSIDE OF SAID PLATE FOR HOLDING COPY MATERIAL FLAT AGAINST SAID PLATE.