The reading head of the marks litters by a document

摘要

The other reading marks comprises a source of the two photodetectors application 57 and 58, 59 a of the transmission means of application, forming an emitting head 7 by two encadree heads receiving 8, 9, opposite the document, and a circuit 50 for processing the signals from the photodetectors carrying the source and the photodetectors. According to the invention, the transmission means are of the optical ducts rigid parallel stencil 27, 28, 29 which, with the other elements of the head are mounted individually and relatively to each other and maintained in a same flat casing 1. / p & & p & application: systems of treatment.