Electrophotographic printer

Claim 1

ELECTROPHOTOGRAPHIC PRINTER APPARATUS OF THE TYPE FOR DEVELOPING AN ELECTROPHOTOSTATIC IMAGE ON A SHEET OF PHOTOCONDUCTIVE PRINT MATERIAL, SAID APPARATUS COMPRISING A DIELECTRIC EASEL HAVING AN INPUT RECEIVING END AND AN OUTPUT DELIVERY END, SAID EASEL BEING MOUNTED ON A BASE SUPPORT FRAME AND HAVING A GENERALLY FLAT TOP SURFACE WITH A CURVED OUTPUT END SURFACE FOR SUPPORTING SAID PRINT MATERIAL, MEANS MOUNTED ADJACENT THE INPUT END OF EASEL FOR PLACING A UNIFORM ELECTROSTATIC CHARGE ON SAID PHOTOCONDUCTIVE PRINT MATERIAL, DRIVE MEANS FOR ADVANCING SAID PRINT MATERIAL PAST SAID CHARGING MEANS AND OVER THE SURFACE OF SAID EASEL, PROJECTOR MEANS FOR EXPOSING SAID PRINT MATERIAL TO A LIGHT IMAGE WHILE THE MATERIAL IS SUPPORTED ON SAID EASEL AFTER HAVING BEEN ELECTRICALLY CHARGED, MEANS FOR DEVELOPING THE IMAGE CHARGE PATTERN ON SAID MATERIAL COMPRISING A SUPPLY OF DEVELOPER MIXTURE AND AN ELECTROMAGNET PIVOTALLY SUPPORTED ADJACENT THE CURVED OUTPUT END OF SAID EASEL, SAID ELECTROMAGNET BEING ADAPTED WHEN ENERGIZED TO PICK UP AND FORM A MAGNETIC BRUSH FROM SAID SUPPLY OF DEVELOPER, AND MEANS FOR MOVING SAID MAGNETIC BRUSH INTO CONTACT WITH SAID PRINT MATERIAL AS SAID PRINT MATERIAL PASSES ALONG THE CURVED OUTPUT END OF SAID EASEL.