Patent ID: 8807719
Filing Date: 2014-08-19
Classification: B41J

Abstract:
1. A method for circulating fluid in a fluid ejection device, comprising: flowing a first flow of fluid in sequence of: flowing the fluid from a fluid supply chamber to a supply inlet connecting the fluid supply chamber and a fluid supply channel of a plurality of supply channels running in parallel to each other, through the supply inlet and into the fluid supply channel, across the fluid supply channel to a bypass fluidically connecting the fluid supply channel to a fluid return channel of a plurality of return channels running in parallel to each other, and through the bypass into the fluid return channel, and across the fluid return channel to a fluid return chamber; and simultaneously with flowing the first flow of fluid, flowing a second flow of fluid across the fluid supply channel to a pumping chamber cavity, through the pumping chamber cavity and into the fluid return channel, across the fluid return channel to the fluid return chamber, wherein the first flow of fluid and the second flow of fluid are in fluidic communication within the fluid supply channel, and wherein the pumping chamber cavity is in fluidic communication with a nozzle defined in a nozzle surface, and the plurality of supply channels each runs in parallel with the nozzle surface.