Boots – shoes – and leggings
Patent
1981-10-27
1988-06-21
Lall, Parshotam S.
Boots, shoes, and leggings
101134, 101136, 356425, 364523, 364526, 364552, 364558, G01J 346, G06F 1540
Patent
active
047528923
ABSTRACT:
An improvement in the measuring elements of closed circuit systems for controlling-correcting printing in offset printing machines is provided. The values of measurements are amplified, analogically commutated, converted from analog to digital form, and then microprocessed so as to be compared with standard values established in a memory program provided for each one of the valves controlling the printers block of each one of the printing bodies. A reading is taken decomposed into three variables, each one of which corresponds to one of the three basic colors of the visible spectrum in which the light from the colored stain is diffracted by means of a ROWLAND diffraction grating in which there is reflected the light from optical fibers arranged at 45.degree. angles with respect to the printing paper, and which direct a beam of light on the colored stain. At the point of convergence of each one of the diffracted colors, there is arranged a photo pickup device whose signal is amplified by a logarithmic amplifier and connnected to a digital signal which is sent to a microprocessor for processing.
REFERENCES:
patent: 3756725 (1973-09-01), Manring
patent: 4090243 (1978-05-01), Kotera et al.
patent: 4402611 (1983-09-01), Yuasa
Darby; Donald A. et al., `Quality Control of Textile Color by Mini/Micro Computer`, Proceedings of Southeastcon, 1979.
Lall Parshotam S.
Salvat Editores, S.A.
Teska Kevin J.
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