Method and apparatus for operating a printer

Details Method and apparatus for operating a printer Method and apparatus for operating a printer

1979-05-21

1981-09-15

Zache, Raulfe B.

Boots, shoes, and leggings

371 4, 371 57, G06F 312, G06F 1100

Patent

active

042901162

ABSTRACT:
Method and apparatus for operating a printer to control acceptance of data from an external source and to execute the operations associated with printing. The electronics comprises a microprocessor based control system in which both the program steps and the data to be printed are stored in the microprocessor memory and wherein the microprocessor accepts incoming data and processes such data in accordance with foreground and background programs, respectively, and wherein the system is provided with interrupt capabilities for jumping from one program to the other upon the occurence of predetermined criteria.
A number of protective techniques and circuits are provided to prevent certain operations from being executed during power up or power down conditions.

REFERENCES:
patent: 3959776 (1976-05-01), Morley
patent: 4096578 (1978-06-01), Malkemes

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