Densitometer method and system for identifying and analyzing pri

Details Densitometer method and system for identifying and analyzing pri Densitometer method and system for identifying and analyzing pri

1987-03-25

1990-08-07

Harkcom, Gary V.

Boots, shoes, and leggings

364518, 101181, G06F 900

Patent

active

049473484

ABSTRACT:
A hand-held battery operated densitometer for identifying and analyzing printed targets is provided which automatically determines whether an unprinted substrate, a solid black, a muddy magenta solid, an overprint, a solid color, or a halftone has been detected. Referenced density values measured through red, green, blue and visual optical filters for an overprint and the first and second down colors are used to determine and display percent trap. Referenced density values for halftone and corresponding solid targets are used to determine and display percent dot area. Referenced density values for solid targets may also be displayed. The printing process is adjusted based upon the displayed solid densities, percent trap and percent dot area.

REFERENCES:
patent: 3933094 (1976-01-01), Murphy et al.
patent: 3970394 (1976-07-01), Stanton
patent: 4239393 (1980-12-01), Tobias
patent: 4544271 (1985-10-01), Yamamoto
patent: 4546700 (1985-10-01), Kishner et al.
patent: 4706206 (1987-11-01), Benoit et al.
patent: 4717954 (1988-01-01), Fujita et al.
Macbeth brochure entitled "A Quality Control Station in One Hand . . . Anywhere . . . Anytime: Macbeth RD-505 Portable Reflection Densitometer".
Macbeth brochure entitled "The On-Press Color Monitor by Macbeth".
Macbeth brochure entitled "Macbeth Introduces Non-Stop Color Control".
Macbeth brochure entitled "Macbeth Press Control System with Automatic Ink Control".
Macbeth brochure entitled "Waste, Profit and the Macbeth Press Control System".

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