Chip layout to enable multiple heater chip vertical resolutions

A fluid ejection chip comprising;

• a substrate;
• a plurality of groups of drive elements formed on the substrate, each group comprising at least two drive elements electrically coupled in parallel;
• and
• a plurality of fluid ejection devices disposed on the substrate, each fluid ejection device of the plurality of fluid ejection devices electrically coupled with a single respective group of the plurality of groups of drive elements so that the plurality of drive elements selectively supply electrical power to the plurality of fluid ejection devices for causing fluid to be expelled from the fluid ejection chip in accordance with image data.

An inkjet printer comprising:

• a housing;
• a carriage adapted to reciprocate along a shaft disposed within the housing;
• one or more printhead assemblies arranged on the carriage so that the one or more printhead assemblies eject ink onto a print medium as the carriage reciprocates along the shaft in accordance with a control mechanism, wherein at least one of the one or more printhead assemblies comprises:
• a printhead comprising:
• a fluid ejection chip comprising;
• a substrate;
• a plurality of groups of drive elements formed on the substrate, each group comprising at least two drive elements electrically coupled in parallel;
• and
• a plurality of fluid ejection devices disposed on the substrate, each fluid ejection device of the plurality of fluid ejection devices electrically coupled with a single respective group of the plurality of groups of drive elements so that the plurality of drive elements selectively supply electrical power to the plurality of fluid ejection devices for causing ink to be expelled from the printhead in accordance with image data.