Element substrate, printhead, and head cartridge

Details Element substrate, printhead, and head cartridge Element substrate, printhead, and head cartridge

2011-03-01

2011-03-01

Feggins, K. (Department: 2861)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

Reexamination Certificate

active

07896475

ABSTRACT:
A small-size element substrate with high electrical efficiency can be achieved when a plurality of printing element arrays having the same discharge amount exist on a single element substrate, and transistors which form driver arrays corresponding to the respective printing element arrays are formed at different array densities including transistors which form a driver array corresponding to a printing element array having a different discharge amount. The area of each transistor of the first driver array corresponding to the first printing element array is set larger than that of each transistor of the second driver array corresponding to the second printing element array. The wiring width of the first power supply wiring pattern corresponding to the first printing element array in a direction perpendicular to the printing element array is set smaller than that of the second power supply wiring pattern corresponding to the second printing element array.

REFERENCES:
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patent: 7216960 (2007-05-01), Imanaka et al.
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patent: 2005/0285904 (2005-12-01), Toge et al.
patent: 2008/0129781 (2008-06-01), Furukawa
patent: 2007-144711 (2007-06-01), None
patent: 2007/061138 (2007-05-01), None

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