摘要:
An inkjet printing device is arranged to employ a first set of multiple nozzle drop generators activated by a first address signal and a second set of multiple nozzle drop generators activated by a second address signal. The multiple nozzles of each drop generator of the first set are arranged in a predetermined geometric pattern, each of which encompasses at least one nozzle of a drop generator of the second set. The ink ejectors of one drop generator of the first drop generator set are arranged in subgroups, one subgroup of which shares a switched power return with one subgroup of ink ejectors of one drop generator of the second drop generator set.
摘要:
A printhead includes at least a first drop generator set and at least a second drop generator set. The first drop generator set includes a first type of drop generator, whereas the other drop generator sets include a second type of drop generator. The first and second types of drop generators are primarily different with regard to the drop weights they are capable of providing. Preferably, the first type of drop generator comprises a multi-nozzle configuration, whereas the second type comprises single nozzle configurations. In one embodiment, a first type of ink is ejected by the first type of drop generators and a second type of ink is ejected by the second type of drop generators. To prevent unwanted mixing of the black and color inks, a first orifice or nozzle layer is provided separate and apart from a second orifice layer. In this manner, a single printhead may be used for the delivery of both black and color inks.
摘要:
The present invention is a printhead for ejecting fluid droplets. The printhead includes a chamber member defining a chamber. The chamber member has a chamber volume associated therewith. The chamber member defines an orifice and a fluid inlet through which fluid flows to the chamber. Also included is a heating member for heating fluid within the chamber. The chamber ejects a fluid droplet having a volume equal to the chamber volume in response to activation of the heating member.
摘要:
The channels through which ink flows to the firing chambers of an ink-jet printhead are provided with selectively controlled valves for restricting flow at specified times for reducing blowback from the firing chamber while decreasing the turn on energy of the printhead.
摘要:
In order to reduce particle clogging of ink firing chambers in an inkjet printer printhead, the barrier layer is configured to have a plurality of inner barrier islands, each associated with a respective one of the heater resistors, disposed between an ink firing chamber and the ink plenum, to form two ink feed channels. The two ink feed channels are designed to have a right angle turn to prevent particles from entering the ink firing chamber. A plurality of outer barrier islands, having a number equal to twice the number of inner barrier islands, are disposed between the inner barrier islands and the ink plenum, and are configured in lines parallel to the lines of heater resistors to prevent particles from reaching the ink feed channels.
摘要:
In one embodiment, a fluid ejector structure includes an array of fluid ejector elements; an array of fluid ejection orifices, each orifice in the array positioned adjacent to a corresponding one of the fluid ejector elements; and a three dimensional array of interconnected conductors within the orifice and ejector element arrays. In another embodiment an orifice sub-structure for a fluid ejector structure includes: a substrate; an array of orifices in the substrate arranged in rows in an x direction and in columns in a y direction; and a first thin film structure that includes first conductive elements within the orifice array extending in the x direction and in the y direction.
摘要:
A printhead for an inkjet printer employs non-circular orifices, such as oval or parallelogram, at the surface of the orifice plate to increase the restoring force of the ink meniscus. The reduced tail and diminished spray of an ink droplet expelled from the non-circular orifice results in improved edge roughness and improved quality of print.
摘要:
An inkjet printing device is arranged to employ a first set of multiple nozzle drop generators activated by a first address signal and a second set of multiple nozzle drop generators activated by a second address signal. The multiple nozzles of each drop generator of the first set are arranged in a predetermined geometric pattern, each of which encompasses at least one nozzle of a drop generator of the second set. The ink ejectors of one drop generator of the first drop generator set are arranged in subgroups, one subgroup of which shares a switched power return with one subgroup of ink ejectors of one drop generator of the second drop generator set.
摘要:
Described herein is a monolithic printhead formed using integrated circuit techniques. Thin film layers, including ink ejection elements, are formed on a top surface of a silicon substrate. The various layers are etched to provide conductive leads to the ink ejection elements. At least one ink feed hole is formed through the thin film layers for each ink ejection chamber. In one embodiment, there are more ink feed holes than ink ejection chambers, so that more than one ink feed hole provides ink to each ink ejection chamber. A trench is etched in the bottom surface of the substrate so that ink can flow into the trench and into each ink ejection chamber through the ink feed holes formed in the thin film layers. An orifice layer is formed on the top surface of the thin film layers to define the nozzles and ink ejection chambers.
摘要:
A monitoring system monitors a pressure wave developed in the surrounding ambient environment during inkjet droplet formation. The monitoring system uses either acoustic, ultrasonic, or other pressure wave monitoring mechanisms, such as a laser vibrometer, an ultrasonic transducer, or an accelerometer sensor, for instance, a microphone to detect droplet formation. One sensor is incorporated in the printhead itself, while others may be located externally. The monitoring system generates information used to determine current levels of printhead performance, to which the printer may respond by adjusting print modes, servicing the printhead, adjusting droplet formation, or by providing an early warning before an inkjet cartridge is completely empty. During printhead manufacturing, an array of such sensors may be used in quality assurance to determine printhead performance. An inkjet printing mechanism is also equipped for using this monitoring system, and a monitoring method is also provided.