Ink maintenance sensor

Details Ink maintenance sensor Ink maintenance sensor

1977-05-31

1978-12-19

Nilson, Robert G.

Fluid handling

Processes

With control of flow by a condition or characteristic of a...

73453, 137 91, 346 75, G05D 1106

Patent

active

041301269

ABSTRACT:
Apparatus and method for detecting and correcting for evaporation from recirculated unused ink drops in an ink jet printer. The specific gravity of the recirculating ink is compared with that of a standard by measuring the time of fall of heavy floats through reservoirs of circulated and uncirculated fluid. A significant difference in fall times is compensated by the replenishment of fluid in the recirculating ink supply.

REFERENCES:
patent: 3557817 (1971-01-01), Royse
patent: 3848618 (1974-11-01), Royse
patent: 3952761 (1976-04-01), Friedland

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