U.S. Philips Corporation

Antonie Schrederhof

Hermanus N Tuin

Johannes Feenstra

Augustinus C De Jong

A fibre plate comprising a stack of rows of glass fibre bundles and with or without light absorptive fibres in interstices thereof. A number of auxiliary glass fibre bundles are located in predetermined positions in a peripheral area of the face of the plate, having a light transmission characteristic differing from the bundles in the image-forming area of the plate. The positions of the auxiliary bundles with respect to an axis of symmetry of the plate are set in accordance with a code identifying the plate, such as a date or a stack number.

Fibre plates having coding fibres

A bundle of parallel glass tubes (27) is passed through openings (29) in parallel alignment plates (5) which divide the bundle into a central portion (31) in a zone between the two alignment plates and two end portions (33) beyond this zone. Subsequently, the tubes are softened by heating and the central portion of the bundle is constricted. Subsequently, the central portion is embedded in a moulding compound which, when set, forms two coupling pieces (1) for printing heads, which coupling pieces can be separated from one another along a separating plane (37) which extends parallel to the alignment plates. Thus, important parts of at least two printing heads are manufactured simultaneously.

Growing community of inventors

Eindhoven, Netherlands

Antonie Schrederhof