Ing C. Olivetti C., S.p.a.

Giampiero Meazza

Giuseppe Coli

Giuseppe Fogaroli

Giorgio Tadini

Roberto Cedone

The original documents of A4 or A3 format are selectively read by a scanning apparatus which is integrated into a system for producing and transmitting images. The originals of A4 format are normally positioned on a fixed exposure surface and the originals of A3 format are introduced into a separate device for transporting documents, which is adjacent to the fixed exposure surface. A carriage with lamps is slidable below the exposure surface to illuminate the A4 original while to illuminate the A3 original the carriage is positioned into a fixed position corresponding to the separate reading device where the original A3 is slid with respect to the carriage past an exposure zone. The reflected images of the originals are passed by means of mirrors mounted on the carriage to a lens which reflects them on to a photodetector device which converts the light rays into digital electrical signals. To adjust the focal lengths of the lens to the various dimensions of the A3 and A4 formats and to compensate for the different distances (difference D) of the two types of originals from the lens, two of the mirrors are mounted on an auxiliary frame which is movable on the carriage. The auxiliary frame is displaced by its own motor and a lead-screw to different positions in relation to the type of original which is to be read.

Document reading apparatus

The apparatus for reading and digital processing of color images comprises groups of CCD sensing elements for reading the individual pixels forming the image. Each group of the sensing elements is associated with one primary color, for generating corresponding reading signals, which control a color indication circuit generating a color indicatory signal for indicating the presence of any color in the image. The colour indicator signal is derived from a table of zones of colours which is recorded in a ROM and can be addressed by the reading signals of the various colours, input from corresponding reading elements via compensation circuits. The colour signal is capable of controlling second selective scanning of document for recording the reading signals for all the primary colours of the image. The ROM is also capable of providing an indication of the mixture of colours of each pixel, which is compared to a predetermined mask for the purposes of suppressing a particular mixture of colours from the recording.

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Ivrea, Italy

Giampiero Meazza