Temperature calibration for fluid ejection head

A fluid ejection head, comprising:

• a fluid ejection nozzle that ejects a fluid in response to a firing signal;
• a temperature sensor located to measure a temperature of the ejection head using a resistance of a temperature sensing resistor of the fluid ejection head, and to generate a temperature signal in response thereto;
• and
• a memory device that stores a temperature correction value representing the difference between the temperature signal and an ideal resistance measured by a precision ohmeter;
• and
• a controller configured to determine an offset value that equals a difference between the ideal resistance and an expected value of a process distribution mean, wherein the process distribution mean is an average value for printheads manufactured in a particular batch and using a particular process.