Variable halftone operation inkjet printheads

Details Variable halftone operation inkjet printheads Variable halftone operation inkjet printheads

1995-08-31

1997-06-24

Fuller, Benjamin R.

Incremental printing of symbolic information

Ink jet

Controller

347 11, B41J 2205

Patent

active

056421427

ABSTRACT:
A simple and inexpensive method for halftone printing by an inkjet printer is disclosed. Improved halftone printing in an inkjet printer is provided by varying the ink drop volume of an thermal inkjet printhead by controlling the pulse width of the delivered firing pulses.

REFERENCES:
patent: 4561025 (1985-12-01), Tsuzuki
patent: 4875059 (1989-10-01), Masuda
patent: 4982199 (1991-01-01), Dunn
patent: 5036337 (1991-07-01), Bohorquez
patent: 5146236 (1992-09-01), Hirata et al.

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