Print color coder

CN2437489Y
A color-coded rotary encoder for automatic overprinting sets a color mark in the circumferential direction of a first plate, and the color mark consists of a zero phase mark and a positioning mark. The zero-phase mark is composed of a wide mark and a narrow space. The width of the wide mark is larger than the width of the narrow space. The positioning mark is composed of a set of spaced-apart boundary marks. On the subsequent printing plate, an overprint is set to fill in the interval of the first plate. Color code. This printing automatic overprinting color-coded rotary encoder replaces the blowhole with a mark, and the encoder disk is separated from the photoelectric detection circuit. This facilitates the detection of automatic overprinting, and has the advantages of automatic addressing, accurate overprinting, and easy operation.