Patent ID: 7568793

Claim:
An apparatus for use in a printing device, the apparatus comprising: a housing having a first port configurable to receive a printing fluid and a second port configurable to output said printing fluid, said housing forming a chamber therein; a sealing member at least partially arranged within said housing and configured to move between an open position and a closed position, said first port and said second port being fluidically coupled together when said sealing member is in said open position and fluidically uncoupled when said sealing member is in said closed position; a resilient member operatively coupled to said sealing member and configured to urge said sealing member towards said closed position with a closing force; wherein said sealing member is further configurable to respond to an opening force applied thereto by moving from said closed position towards said open position when said opening force is greater than said closing force, the opening force applied to the sealing member by a movable carriage of the printing device; and an electromagnet operatively coupled to said sealing member and configured to maintain said sealing member in said open position with a holding force that is equal to or greater than said closing force in response to an electrical signal.