摘要:
A liquid ejector includes an electrically insulating support having a first surface and a second surface. An electrical trace begins on the first surface of the support and ends on the second surface of the support. An ejector die is positioned on the first surface of the support and electrically connected to the portion of the electrical trace located on the first surface of the support. A polymer material is molded on a portion of the ejector die and at least a portion of the first surface of the support. A portion of the electrical trace remains free of the polymer material.
摘要:
A drive assembly for a printer includes an endless loop drive path and guide structure that allows a printhead to operate in either reciprocal or endless loop modes in which the printed traverse both a liner and an arcuate portion of the drive path. This provides a printer architecture in which a printhead may be endlessly driven at a constant speed in one direction to provide multiple print swaths separated spatially. This eliminates the need for deceleration/acceleration changes required in reciprocal printer architectures and is capable of increased throughput by defining arcuate turnaround zones that can be traversed by the printhead faster than the time it takes to slow, stop and reverse a conventional reciprocal printhead assembly. This robust printer architecture also allows flexibility in use of multiple printheads with simultaneous printing, simultaneous both side printing, and duplex capabilities.
摘要:
A low ink sensing system is combined with an ink cartridge detection system to enable a more efficient ink jet printer. An ink container which supplies ink to an associated printhead is modified by the incorporation of two light directing elements, in the preferred embodiment, a curvilinear prism-like structure and a curvilinear roof mirror, into a transparent wall of the container housing. The cartridge, comprising the ink container and associated printhead, is mounted on a scan carriage. Periodically, the carriage is conveyed to a sensing station comprising a pair of light sources and a commonly used photosensor. A first light source is energized and a beam of light is directed to a location where the curvilinear roof mirror would be positioned if the cartridge is present. If the cartridge is absent, lack of a reflected return signal is sensed, indicating a cartridge has not been inserted. Print operation is halted until a cartridge is inserted. If a cartridge is properly inserted, the curvilinear roof mirror returns most of the incident light to the photosensor which generates a signal indicating the presence of the cartridge. A second light source is then energized and directed towards the curvilinear prism-like structure, which is either immersed in ink or exposed to air within the interior of the container. If the latter, light is internally reflected by the curved surfaces back to the photosensor. If a print operation has been in progress, and the ink level has fallen, the common photosensor detects either a strong or weak redirected light component and initiates a status check and generates appropriate displays of low ink level or out of ink warnings.
摘要:
A fluid cartridge, such as a cartridge for filling with ink for use in ink jet printhead includes a housing enclosing a wick chamber, the housing including a top wall. The housing also includes an ink chamber. A fluid conduit connects the ink chamber and the wick chamber. The outer surface of the top wall of the housing is formed with a recess. A vent opening through the top wall of the wick chamber, at the recess, provides communication between the wick chamber and the recess. A covering over the top surface of the housing encloses the recess. An outlet opening through an outer wall other than the top wall of the wick chamber provides fluid communication for the ink to flow from the wick chamber. One end of an overflow tube is in fluid communication with the recess in the top wall of the housing. The other end of the overflow tube opens to the ambient environment at another point on the exterior of the housing, such as near the outlet opening. A dam in the recess, between the vent opening and the one end of the overflow tube impedes, but does not completely obstruct the flow of spillover ink from the vent opening into the overflow tube.
摘要:
An apparatus for gripping a sheet includes a first gripping member and a second gripping member. The second gripping member includes a base which is movable relative to the first gripping member. The second gripping member further includes a plate which is secured to the base, the plate being adapted to cooperate with the first gripping member to grip the sheet.
摘要:
A liquid ejector includes an electrically insulating support having a first surface and a second surface. An electrical trace begins on the first surface of the support and ends on the second surface of the support. An ejector die is positioned on the first surface of the support and electrically connected to the portion of the electrical trace located on the first surface of the support. A polymer material is molded on a portion of the ejector die and at least a portion of the first surface of the support. A portion of the electrical trace remains free of the polymer material.
摘要:
A fluid container, such as, for example, an inkjet print head cartridge, architecture uses a relatively large filter that is located below a negative pressure material chamber and a free ink chamber in a side-by-side relationship. The negative pressure material volume relative to a free ink chamber value can me made to be approximately one to one. Both chambers overlie an ink manifold/delivery port and are separated from the delivery port by a filter. Flow impedance of the cartridge is reduced, as a result, in any orientation of the cartridge. The filter may be separated from, or in contact with a negative pressure material. A cartridge lid is provided with a negative pressure material chamber which is suspended into the cartridge. A negative pressure material having a fiber felt construction is provided.
摘要:
A refillable fluid reservoir for a fluid ejection head, including a fluid reservoir having top, bottom and side walls defining an interior volume for having fluid; a venting port provided on one of the reservoir walls; and a fluid inlet port provided on one of the reservoir walls, the venting port and the fluid inlet port being located at substantially the same vertical level to increase volumetric efficiency and reduce staining.
摘要:
A fluid reservoir sensing system includes a pair of optical prisms or sensor targets that reflect light when a fluid level is below one of the pair of prisms or sensor targets. The pair of optical prisms or sensor targets includes a low prism or sensor target usable to sense a low liquid level in the fluid reservoir, and a high prism or sensor target usable to sense a high liquid level in the fluid reservoir, and a wicking means to wick fluid away from the high incident and low incident surfaces of the prisms or sensor targets that are above the fluid level. The fluid reservoir sensing system optionally includes an emitter and a photosensor.