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US 4,068,943 AGranted
Additive color printer control
AssigneeDe luxe General, Incorporated
InventorRobert Paul Gyori
Life of this patent
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Abstract
An automatic electronic control including a microprocessor for retaining additive color printing information, means to reproduce selected such information as electrical control signals, and an optoelectronic feedback loop that includes light sources for additive printing. The control system provides color component control according to the microprocessor color information regardless of other variations and conditions within the system.
Claims6
The method of additive color printing control which includes the method steps of;
- a. originating electrically represented plural component digital color information corresponding to a given color transparency,
- b. converting said digital color information into plural corresponding simultaneously and continuously existing electrical amplitudes, and
- c. continuously and simultaneously controlling plural sources of color component integrated continuous printing illumination intensity in accordance with said electrical amplitudes.
An additive color printer control, comprising;
- a. digital microprocessor means (1) for accepting electrically represented components of color information corresponding to a given color transparency (39),
- b. a series to parallel converter (15) connected to said microprocessor means to temporarily, simultaneously and separately retain said plural components of color information,
- c. plural digital to analog converters (16) connected to said series to parallel converter to simultaneously accept said plural components of color information and to form separate electrical amplitudes corresponding to said components,
- d. an electrical amplitude comparator (20) connected to each said digital to analog converter, and
- e. a feedback circuit (25, 35, 40, 42, 44, 20) including plural illumination means for color printing also individually connected to each said comparator,
- whereby each of said plural illumination means is energized according to said plural components of color information provided by said microprocessor means.
3 more elements
Dependencies are inferred from the claim text.