Patent ID: 7794046
Filing Date: 2010-09-14
Classification: B41J

Abstract:
1. A fluid ejection system, comprising: a receiver transport system configured to transport a receiver in a first direction, the receiver transport system further configured to transport a receiver having a maximum receiver width; a first fluid ejection head comprising a first set of fluid ejection nozzles to deposit fluid drops on a first surface of the receiver, the first set of fluid ejection nozzles distributed in a first region that is at least as wide as the maximum receiver width and is substantially parallel to the first direction; a second fluid ejection head comprising a second set of fluid ejection nozzles to deposit fluid drops on a second surface of the receiver; a first mechanism that adjusts a position of the first fluid ejection head; and a computer to control the first mechanism to adjust the position of the first fluid ejection head such that the first set of fluid ejection nozzles in the first fluid ejection head are not directly opposing to the second set of fluid ejection nozzles in the second fluid ejection head and such that each nozzle of the first set of fluid ejection nozzles alternately points to a gap between nozzles of the second set of fluid ejection nozzles before the first fluid ejection head ejects fluid drops on the receiver, and control the first fluid ejection head to simultaneously eject fluid drops on the receiver and over-spray outside the edge of the maximum receiver width.