System for priming a fluid dispenser by expanding gas bubbles

摘要

A fluid-dispensing head includes a plenum configured to house fluid; at least one dispensing head orifice in fluid communication with the ink plenum; and at least one heating element configured to heat fluid in the head such that gas bubbles disposed within the fluid increase in surface area.

主权项

1. A fluid-dispensing head comprising:
at least one body supporting at least one heating element wherein said at least one heating element heats said body such that fluid around said body is heated and gas bubbles within said fluid increase in surface area; and at least one dispensing head orifice, wherein said body heats said fluid to a temperature greater than an ambient temperature but lower than a boiling point of said fluid prior to said bubbles with increased surface area being expelled from said fluid dispensing head through said at least one orifice in a priming operation.