Electrophotographic sensitizing screen with peripherally clogged apertures
AssigneeOlympus Optical Co., Ltd.
InventorsMasaji Nishikawa, Norio Amemiya, Tadahiro Yasuda, Shigeru Nakayama
Life of this patent
Estimating the term…
Abstract
An electrophotographic sensitizing screen having a great number of apertures, wherein at least an insulating layer and a conductive layer are successively formed on a conductive mesh, is disclosed. These apertures are regularly arranged at such an angle as not to produce moire fringes with respect to a light image projected on the screen.
Claims6
An electrophotographic sensitizing screen formed from a conductive mesh having a plurality of apertures therein extending over the surface and to the peripheral edges thereof in a regular array, said mesh including an insulating layer applied thereto, a conductive layer overlying said insulating layer, and a photosensitive layer overlying said conductive layer the improvement comprising clogged apertures extending inwardly of the peripheral edges of said screen to define a peripheral area, said apertures in said peripheral area clogged with an insulative synthetic resin to block the passage of corona ions therethrough, said area of said screen interiorly of said peripheral area serving as an image area, said conductive layer extending over said image area at least to said peripheral area.
An electrophotographic sensitizing screen being provided with at least an insulating layer and a conductive layer successively formed on a conductive mesh including mesh portions defining an effective image area with a surrounding outer peripheral mesh portion as a frame, and a photosensitive layer formed on said conductive mesh opposite said insulating layer within said effective image area, said screen including a plurality of apertures therein, the improvement comprising said apertures in an area from about 3 mm. to about 10 mm. inwardly of the boundary between said mesh portions and said outer peripheral portion being clogged with an insulative synthetic resin after the formation of said insulating layer, and said conductive layer is formed on said insulating layer to extend at least to such clogged aperture region.
Dependencies are inferred from the claim text.