Drop detector for ink jet apparatus

Drop detector system and method with light collector

Drop discharge head and method of producing the same

Drop discharge head and method of producing the same

Drop ejection assembly

Drop ejection assembly

Drop ejection assembly

Drop ejection assembly

Drop ejection assemby

Drop emitting apparatus

Drop emitting apparatus

Drop firing control in multicolor ink jet printheads

Drop flight correction for moving nozzle ink jet

Drop generating apparatus

Drop generating apparatus

Drop generating apparatus

Drop generating apparatus

Drop generating apparatus

Drop generator

Drop generator