Abstract: A method for detecting a clog in a suspect portion of an ink conduit of an ink delivery system, includes the steps of pumping a slug of ink of a known volume into the ink conduit, attempting to pump the slug past the suspect portion, and detecting the presence of ink at a position beyond the suspect portion.

Abstract: A replaceable ink supply comprises an ink container with an internal chamber formed from a plurality of walls. An ink reservoir block can be located within the internal chamber. Further, a channel can be formed in at least one wall of the internal chamber and the channel having an open side exposing a portion of the ink reservoir block.

Abstract: A fluid containment structure includes a containment vessel having an interior fluid chamber for fluid containment. A flexible bag is disposed within the containment vessel; the bag is vented to the external atmosphere outside the containment vessel. A spring is coupled to the bag to hold the bag in a coiled state until a back-pressure within the fluid chamber exerts sufficient force to commence uncoiling the bag against the spring pressure, allowing air from the external atmosphere to enter the bag and enlarge an interior bag space which is sealed from the interior fluid chamber.

Abstract: A fluid supply including a body and a reversibly fluid absorbing material having a first surface energy and disposed in the body. In addition, the fluid supply has at least one fiber having a fiber surface energy where the fiber is disposed within the fluid absorbing material, and the fiber surface energy is less than the first surface energy of the fluid absorbing material.

Abstract: An ink delivery apparatus includes a pressure tuned rolling piston having a distal end. The distal end includes a pressure responsive portion. A first convolute portion supports the pressure responsive portion, and the first convolute portion is configured to provide a first level of resistance against a negative pressure.

Abstract: An ink delivery apparatus includes a chamber configured to contain ink, where that chamber includes a proximal end for connection to the ink delivery apparatus, and opposing side portions having at least one tapered section configured to support the chamber and to facilitate at least partial controlled collapse of the chamber in response to a negative pressure.

Abstract: An ink delivery regulation apparatus includes a support configured to be positioned within an ink chamber and a resilient deflection member coupled to the support. The resilient deflection member is configured to resiliently deflect from a generally concave shape to a generally convex shape in response to a change in said negative pressure.

Abstract: A fluid containment structure includes a containment vessel having an interior vessel space for fluid containment, and a fluid outlet communicating with the interior vessel space. A flexible bag with opposed side surfaces is disposed within the containment vessel, vented to an external atmosphere outside the containment vessel. A sacrificial bond structure is formed between the side surfaces, and restrains the side surfaces together until a back-pressure within the vessel space exerts sufficient force to break the sacrificial bond structure, allowing air from the external atmosphere to enter the bag and enlarge an interior bag space.

Abstract: Ink reservoirs and methods are provided. One ink reservoir has at least one compartment and first and second vents that communicatively couple the compartment to an atmosphere surrounding an exterior of the ink reservoir.

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: 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 raster deflection signal generator that generates deflection signals in accordance with sweep control signals provided by a programmable timing generator. The programmable timing generator stores digital signals representative of the desired sweep control signals so as to tailor the sweep timing to the input video channel. The digital sweep control signals are synchronized to the input video channel by locking a horizontal sync pulse generated by the programmable timimg generator to the horizontal sync pulse of the video input channel by a phase locked loop. Each deflection sweep is compared to a threshold voltage representative of screen center to provide a duty cycle signal in accordance with drift of the TV image from screen center. The duty cycle signal is filtered and sampled and fed back to the sweep generator so as to maintain the deflection sweeps properly centered.

Abstract: Refresh memory apparatus for use in a CRT raster display system utilizes half field storage memories for ping ponging between updating and readout. In one TV mode of operation the even and odd raster lines are stored in the respective memories and in another TV mode the top and bottom halves of the frame are stored therein. The most significant bit and least significant bit of the vertical address signals are multiplexed to control the ping pong reading and writing of the memories and are multiplexed with the remainder of the address signal to provide the read and write addresses for the memories. The multiplexers are controlled in accordance with the TV mode in which the system is operating.