Patent ID: 6250751
Filing Date: 2001-06-26
Classification: B41J

Abstract:
A method for manufacturing a pressure control device for an ink jet cartridge, the method comprising the steps of:providing a substantially inflexible frame having at least one pressure port, the frame having at least one peripheral edge;providing at least one malleable web, having a first side and a second side;attaching the first side of the malleable web to the peripheral edge of the frame, thereby defining a substantially closed cavity;applying a subatmospheric pressure to the cavity through the pressure port before, after or while heating the malleable web to a temperature sufficient to soften and mold the web so that the web substantially conforms to the cavity, thereby providing a cavity having a variable volume; andproviding a biasing means adjacent the first or second side of the conformed web to bias the web relative to the cavity.