Printing head, printing method and apparatus using same, and app

Details Printing head, printing method and apparatus using same, and app Printing head, printing method and apparatus using same, and app

1995-03-02

2000-09-12

Le, N.

Incremental printing of symbolic information

Ink jet

Controller

B41J 29393

Patent

active

061167142

ABSTRACT:
A printing head has a plurality of heater boards, each of which includes a shift register to which printing data and selection data for selecting preheating pulse signals are applied as inputs, a latch circuit for latching the printing data, a selection-data latch circuit for latching the selection data, a selection circuit for selecting any one of a plurality of preheating pulse signals inputted in accordance with the latched selection data, and a plurality of heating resistors driven by the printing data or preheating pulse signals. Correction data, obtained by a head correcting apparatus, for performing printing at an average density by correcting the characteristics of each heater board is stored in a memory of the printing head. A printing apparatus decides the selection data in accordance with the correction data and sets the selection data in the selection-data latch circuit.

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