Typewriting machines – Including control of format and selection of type-face by...
Patent
1985-03-18
1986-05-20
Sewell, Paul T.
Typewriting machines
Including control of format and selection of type-face by...
364900, 400 76, 400303, 400 63, B41J 530, B41J 546
Patent
active
045897859
ABSTRACT:
A printing apparatus includes a printing unit, an operation panel including a plurality of switches, a first memory, and a control unit which stores the print control data corresponding to the states of the switches of the operation panel into the first memory when a power source is turned on, changes the print control data in this first memory in accordance with an external command, and drives the printing unit in accordance with the input print data and with the print control data in the first memory, thereby printing the input print data. A second memory is provided to store the switch data corresponding to the states of the switches. The control unit compares the states of the switches at the time when the operation mode is changed from the off-line state to the on-line state with the switch data in the second memory, changes only the switch data having the contents different from the states of the switches among the switch data in the second memory in accordance with the states of the switches, and changes only the corresponding print control data in the first memory in accordance with the changed switch data.
REFERENCES:
patent: 3869980 (1975-03-01), Schroeder
patent: 3923138 (1975-12-01), Willcox
patent: 4086660 (1978-04-01), McBride
patent: 4137425 (1979-01-01), Ferroglio
patent: 4220417 (1980-09-01), Sprott
patent: 4223393 (1980-09-01), Abe
patent: 4298773 (1981-11-01), Diab
patent: 4311399 (1982-01-01), Wegryn
patent: 4452136 (1984-06-01), Boynton
Sewell Paul T.
Tokyo Electric Co. Ltd.
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