Abstract: A reflector configuration where the reflector surfaces intersect a beam of beam light from least two sides, and are oriented at an angle intersecting the cross section of the propagating beam. The reflectors are further characterized as allowing passage of unreflected portions of the beam to be successively re-directed by other reflectors along the propagating path, where the total lumens reflected and redirected is substantially the same over a given beam propagation distance.

Abstract: Strong, transparent and readily dispersible copper phthalocyanine pigments are obtained by grinding the crude pigment in the presence of from 1 to 10% by weight (based on the crude pigment) of an organic liquid at from 90.degree. to 140.degree. C., the pigment forms obtained giving printing inks with very good flow characteristics.

Abstract: Readily dispersible pigment granules are prepared by dispersing, in an aqueous suspension of the pigment, by thorough stirring, a gas which does not react with the suspension in fine bubbles under essentially atmospheric pressure and converting the resulting pigment suspension into pigment granules by spray drying or by mechanical removal of the liquid, shaping of the still moist pigment cake and subsequent drying.

Abstract: Device for the offset displacement between two end positions, at which its offset movement is reversed, of a warp knitting machine guide bar shifted horizontally by a guide bar shaft and holding the yarn guides. A buffer is provided for at least one of the end positions, said buffer acting as an elastic stop with a short buffering path with respect to the needle division before the yarn guides can run up against the knitting needles.

Abstract: A process for the preparation of pigmentary forms of phthalocyanine and of insoluble polycyclic compounds, wherein the crude pigment is milled in the presence of one or more acids which have a pK of <4.9 and are non-oxidizing under the milling conditions, until the primary particle size is .ltoreq.0.1 .mu.m, the milled material is then finished in the conventional manner in a solvent in the presence or absence of water, and the pigment is isolated.The pigments give very deep colorations and are very easily dispersible in the media in which they are used.