Methods and apparatus provide for automatic fluid ejector alignment and performance evaluation and modification in one or multiple planes. A fluid ejector fires a drop through a drop detection module. A signal indicating drop presence or absence is sent to a computer. The computer analyzes the data,...http://www.google.de/patents/US7163275?utm_source=gb-gplus-sharePatent US7163275 - Methods and apparatus for an automatic fluid ejector alignment and performance system
