Replaceable printing component with factory identity code

摘要

In one example implementation, a replaceable printing component includes a fluid supply chamber, and a printhead on the fluid supply chamber. The printhead includes a memory storing a factory identification code that comprises a combination of digitized analog performance parameters. The printhead also includes electronic test components from which the analog performance parameters have been measured.

主权项

1. A replaceable printing component comprising:
a fluid supply chamber; a printhead comprising a memory, a plurality of test components, and a measurement circuit disposed on the printhead to measure analog performance parameters on the plurality of test components, the measurement circuit including a digital-to-analog converter coupled to at least one test component; and an encrypted factory identification code stored in the memory that comprises a combination of digitized analog performance parameters measured on the test components.