Reproduction system utilizing ion modular and dielectric imaging surface

An electrophotographic reproduction apparatus which comprises

• a photoconductive ion modulator,
• means for imparting a uniform electrostatic charge to said modulator,
• means for exposing said modulator to a pattern of light and shadow corresponding to an original image to be reproduced, thereby selectively discharging said modulator and producing a latent electrostatic image thereon,
• means for causing an ion stream to impinge upon said modulator carrying said latent electrostatic image,
• dielectric means to receive ions passed through said modulator in a pattern corresponding to said latent electrostatic image,
• means for developing the resulting latent electrostatic image upon said dielectric means, and
• means for simultaneously transferring the resulting developed image from said dielectric means to a receiving material and fixing said image thereon without destroying the latent electrostatic image upon said dielectric means,
• said dielectric means comprising a duplex anodized aluminum dielectric surface comprising both barrier type aluminum oxide and porous type aluminum oxide on aluminum.