Recording apparatus having a recording head driven in plural blo

Details Recording apparatus having a recording head driven in plural blo Recording apparatus having a recording head driven in plural blo

1994-02-10

1996-07-23

Hartary, Joseph W.

Recorders

Markers and/or driving means therefor

Printing, dotting, or punching marker

347 15, 347182, 347183, B41J 205, B41J 2355

Patent

active

055394337

ABSTRACT:
There is disclosed a driving device for a recording head such as a thermal head or an ink jet head driven in plural blocks, which is capable of avoiding formation of division lines, or low-density streaks, in the recorded image at the boundaries of the driving blocks of the head. In this driving device, the time difference between the start of pulse application to a heat generating element of the recording head and that of an adjacent element is maintained so as not to exceed the maximum pulse duration to the heat generating element. Also, a group of plural heat generating elements positioned at the boundary of two divided blocks is activated simultaneously with each of the two divided blocks.

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Eur. Pat. Off. Search Rep. for Eur. Pat. App. 90120016.2.

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