Abstract: A camera for taking a plurality of photographic images utilizing a single focal plane, usually a plate or a sheet of film, which is fixedly disposed with relation to the lens. The camera is divided into a plurality of focal locations arranged about a rotatable mirror associated with the lens and one or more additional mirrors which reflect an image from the rotatable mirror to a portion of the plane. The camera is capable of taking a succession of pictures and displaying them in a tightly packed, rectangular and non-overlapping array around the perimeter of the focal plane. The image beam from the lens is directed at each successive focal location by the rotatable mirror and the additional mirror which reflect the beam to image at the focal plane. To obtain the desired arrangements of the plurality of images on the fixedly disposed focal plane, the image centers are disposed at different length radii from the lens and rotating mirror axis.

Abstract: Process for disperse azo dyes having a cyano radical ortho to the azo group by reacting the corresponding halogeno dye with a covalent non-metallic nitrile in the presence of a copper catalyst and an acid acceptor. Previous processes have used a metal cyanide as the cyanide source. The present process does, however, contemplate the use of a non-metallic nitrile, even in small amounts, in combination with a metal cyanide for which advantages are to be gained in terms of reduced copper usage. The non-metallic nitrile is preferably a cyanohydrin which may be prepared in situ by reacting an aldehyde or ketone with a metal cyanide. The metal cyanide may itself provide the copper catalyst.