Recording head drive control apparatus

Details Recording head drive control apparatus Recording head drive control apparatus

1984-06-11

1987-01-27

Hartary, Joseph W.

Recorders

Markers and/or driving means therefor

With ink supply to marker

358 75, 358298, G01D 1518

Patent

active

046397477

ABSTRACT:
There is provided a liquid jet recording apparatus comprising: recording heads whose recording densities vary in response to drive signals; drive circuits to drive the recording heads; a control circuit to output the drive signals through the drive circuits to the recording heads; and a timing pulse generator to supply a drive timing pulse for the recording heads to the drive circuits. During the recording interval, the timing pulse generator supplies the drive timing pulse even when all of or a part of the recording heads are not driven. At this time, the control circuit controls the levels of the drive signals for the recording heads which are not driven to less than the coloring threshold value of those recording heads. As a result, the multihead drive control section in the multihead recording apparatus such as a full color printer can be constituted by a simple circuit.

REFERENCES:
patent: 4266232 (1981-05-01), Juliana
patent: 4300144 (1981-11-01), Isayama
patent: 4513297 (1985-04-01), Okamura
patent: 4515487 (1985-05-01), Minami
patent: 4528576 (1985-07-01), Koumura

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