Abstract: Disclosed are mechanisms and methods for venting the fluid interconnect port of fluid container that is at least partially filled with a capillary material. Preferred embodiments include venting a fluid container to ambient air with a vent located on the upper portion of the container; internally venting the container to channel air from the ambient air vent to an internal location adjacent to the fluid interconnect port; and then restrictedly venting the fluid port. Preferred embodiments also include positioning the restricted venting away from the bulk of the capillary material in the fluid container, and providing a capillary break and capillary accumulator adjacent to the fluid interconnect port.

Abstract: Embodiments of the present invention comprise geometric features in the fluid interconnect region of an ink container which inhibit residual ink from contacting a removable seal on the container or the fingers and clothing of the container installer. The features comprise a fluid accumulator and capillary break.

Abstract: A disposable/refillable inkjet cartridge with bubble generator and an adhesively attached bubble generator vent cover. The cartridge is filed through a bubble generator opening in the cartridge bottom eliminating a separate filling orifice and easing the priming operation. The vent cover is adhesively attached making removal for refilling easier and avoiding suspected problems related to welding flash in welded vent covers. The bubble generator includes a tapered opening which receives a ball. The ball contacts ribs extending longitudinally along a tapered portion of the opening. The ribs are spaced over an arc of the opening. A bubble forms as needed between the ball and opening to maintain back pressure. The ribs and taper produce more consistent bubble pressures. A single piece of tape over the bubble generator and printhead nozzles avoids common causes for depriming.

Abstract: A disposable/refillable inkjet cartridge with bubble generator and an adhesively attached bubble generator vent cover. The cartridge is filed through a bubble generator opening in the cartridge bottom eliminating a separate filling orifice and easing the priming operation. The vent cover is adhesively attached making removal for refilling easier and avoiding suspected problems related to welding flash in welded vent covers. The bubble generator includes a tapered opening which receives a ball. The ball contacts ribs extending longitudinally along a tapered portion of the opening. The ribs are spaced over an arc of the opening. A bubble forms as needed between the ball and opening to maintain back pressure. The ribs and taper produce more consistent bubble pressures. A single piece of tape over the bubble generator and printhead nozzles avoids common causes for depriming.