摘要:
The present invention is a printing system and method having a printhead assembly that controls firing operations of an inkjet printhead. In particular, the system and method control the firing and timing decisions pertaining to ink drop ejection through the use of various types of delays. The printing system includes a controller, a power supply and a printhead assembly. The printhead assembly includes a memory device and distributive processor integrated with an ink driver head.
摘要:
A printhead apparatus and accompanying method that achieve a staggered firing of multiple firing chambers within a firing interval to reduce EMI caused by multiple firing signal current transitions. The staggered firings may be achieved by delaying firing signals relative to others. The induced delay is preferably sufficient to reduce EMI while not being sufficient to noticeably affect image quality.
摘要:
The functions of an ink-jet print head drive transistor and ink-ejecting heat transducer (resistor) are combined into a single component, a high-temperature transistor. The transistor is turned on when an ink drop is required, and the resultant heat generated by the transistor is used for creating the vapor bubble for ejecting the ink drop. The drop-ejector transistor is a silicon carbide transistor.
摘要:
A nanoscopic transistor is made by forming an oxide layer on a semiconductor substrate, applying resist, patterning the resist using imprint lithography to form a pattern aligned along a first direction, applying a first ion-masking material over the pattern, selectively lifting it off to leave a first ion mask to form a gate, forming doped regions by implanting a suitable dopant, applying another layer of resist and patterning the second resist layer using imprint lithography to form a second pattern aligned along a second direction, applying a second ion-masking material over the second pattern, selectively lifting it off to leave a second ion mask defined by the second pattern, and forming second doped regions in the substrate by implanting a suitable second dopant selectively in accordance with the second ion mask. The method may be used to make an array of nanoscopic transistors.
摘要:
An inkjet printing system, fluid ejection system and method thereof are disclosed. The fluid ejection system includes a fluid ejection device and a determination module to determine a supply condition based on the count value output by the converter module. The fluid ejection device includes a fluid supply chamber to store fluid, an ejection chamber including a nozzle and a corresponding ejection member to selectively eject the fluid through the nozzle, a pressure sensor unit having a sensor plate to output a voltage value corresponding to a cross-sectional area of an amount of fluid in the ejection chamber. The fluid ejection system also includes a converter module to output a count value corresponding to the voltage value output by the pressure sensor unit.
摘要:
A device including a drain, a channel, a floating gate, and a control gate. The channel surrounds the drain and has a channel area. The floating gate includes an active floating gate region that has an active floating gate region area. The control gate is coupled to the active floating gate region via a control capacitance, wherein the active floating gate region area is smaller than the channel area.
摘要:
An inkjet printhead device, fluid ejection device and method thereof are disclosed. The fluid ejection device includes a fluid supply chamber to store fluid, an ejection chamber including a nozzle and a corresponding ejection member to selectively eject the fluid through the nozzle, and a channel to establish fluid communication between the fluid supply chamber and the ejection chamber. The fluid ejection device also includes a pressure sensor unit having a sensor plate to output a voltage value corresponding to a cross-sectional area of an amount of fluid in the at least ejection chamber.
摘要:
A printhead apparatus, an inkjet printer system, and a method of built-in test employ a test flag transmitted through a data channel of a printhead. The apparatus includes a plurality of printheads, a data register at each printhead, and a status channel. Each printhead has a unidirectional data channel (UDC) to provide data to the printhead. The data register detects proper reception of a test flag received by the printhead through the UDC. The status channel reports printhead status information including whether or not proper reception of the test flag was detected by the data register. The system includes the apparatus and a controller to generate the test flag and receive the printhead status information. The method includes sending a test flag, and verifying proper reception thereof.
摘要:
A fluid ejection device comprises a first resistor layer that comprises at least a first resistor for heating fluid and a second resistor layer that comprises at least a second resistor for heating fluid. There is an electrically insulating layer between the first and second resistor layers. A print cartridge for a printer comprises a fluid container and a printhead, at least one nozzle, a first resistor layer that comprises at least a first resistor for pre-heating or thermally ejecting fluid, a second resistor layer that comprises at least a second resistor for pre-heating or thermally ejecting fluid, and an electrically insulating layer between the first and second resistor layers.
摘要:
A fluid ejection device having storage and methods of forming and using such fluid ejection devices are described. In one embodiment, a substrate comprises multiple heater resistors supported thereby, and configured for ejecting fluid onto a medium. One storage structure is supported by the substrate and configured to store data.