Gray scale ink jet printer

Details Gray scale ink jet printer Gray scale ink jet printer

1995-08-03

1998-04-28

Gray, David M.

Incremental printing of symbolic information

Ink jet

Controller

347 40, B41J 2205

Patent

active

057451311

ABSTRACT:
A printing machine of the type in which liquid ink is deposited on a recording medium for printing gray scale images. The printing machine includes a printhead having ink ejecting nozzles of different sizes. Nozzles of the same size are arranged in groups and groups of nozzles are offset from one another. Ink drops of one group are deposited at locations corresponding to the points of a grid and ink drops of another group are deposited at locations corresponding to points not on the grid. Gray scale printing is achieved by the variation in drop size produced by different groups of nozzles as well as offsetting nozzles of one or more groups of nozzles from a reference group of nozzles printing on the points of a grid.

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