Abstract: Semibright (matte-gloss) coatings of nickel or nickel-cobalt are deposited on a metal substrate from a WATT'S-type, sulfamate or fluoroborate electroplating bath at a pH of 2.5 to 5.8, a temperature of 15.degree. to 70.degree. C and a current density of 0.5 to 20 A/dm.sup.2 in the presence of a substance which deposits with the metal and ensures a semibright or matte-gloss finish. The substances form in situ within the bath from a cationic or amphoteric first component and a second component consisting of an organic anion interactive with the first component to produce a flocculate.

Abstract: Semibright (matte-gloss) coatings of nickel or nickel-cobalt are deposited on a metal substrate from a WATT'S-type sulfamiate or fluorobate electroplating bath at a pH of 2.5 to 5.8, a temperature of 15.degree. to 70.degree. C and a current density of 0.5 to 20 A/dm.sup.2 in the presence of a substance which deposits with the metal and ensures a semibright or matte-gloss finish. The substances form in situ within the bath from a cationic or amphoteric first component and a second component consisting of an organic anion interactive with the first component to produce a flocculate.

Abstract: A printing machine has an upstream and a downstream printing station each provided with a printing roller. A sheet transfer roller is located between the stations for transferring sheets from the printing roller of the upstream station to that of the downstream station; it defines a tangent point with the printing roller of the upstream station. A first and a second mechanical gripper system are mounted on the transfer roller for swinging movement towards and away from one another. A suction gripper system is also provided on the transfer roller for engaging a trailing edge portion of a sheet on the periphery of the printing roller of the upsteam station, prior to arrival of the trailing edge of the sheet at the tangent point, and for lifting the trailing portion off the periphery.