Multi-mode printing circuitry providing ROS printing correction

Details Multi-mode printing circuitry providing ROS printing correction Multi-mode printing circuitry providing ROS printing correction

1996-04-22

1998-06-09

Le, N.

Incremental printing of symbolic information

Light or beam marking apparatus or processes

Scan of light

358298, B41J 247, G01D 1514, H04N 121, H04N 123

Patent

active

057642710

ABSTRACT:
A printing system for printing several types of data on the same page, regardless of any differences in spot density between data types. This circuit provides a separate channel for each data type and processes each data type according to its own instructions and parameters (halftones, compressed images, font generation, etc) and according to its own spot density, without there being a necessity for there to be any synchronous relationship between x and y spot densities of the plurality of data types. Each channel has a boundary checker to determine whether the data is within the image boundary by comparing the x/y coordinates of the scanning beam to the input boundary data, and a data converter to convert the data according to its own instructions. Finally, the output of the channels is combined to form the data stream that is sent to the printer.

REFERENCES:
patent: 5410414 (1995-04-01), Curry
Chapter 16, pp. 16-50. Electronics Engineers' Handbook, 3rd Edition. Eds. Donald G. Fink and Donald Christiansen. Pulsed Circuits, Logic Circuits, and Waveform Generators. New York: McGraw Hill 1989.

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