摘要:
The present invention includes as one embodiment an inkjet printing method for decreasing print banding in a thermal inkjet printhead having a plurality of substrates with adjacent overlapping and non-overlapping regions between the substrates, the method comprising synchronizing a difference in time delay between ink ejected from the adjacent overlapping and non-overlapping regions of each substrate to reduce the difference.
摘要:
The present invention includes as one embodiment an inkjet printing method for decreasing dot placement artifacts of an inkjet printhead having at least two substrates, each with overlapping and non-overlapping nozzle rows, the method including selectively disabling at least one ink ejection element associated with at least one nozzle in the overlapping nozzle rows based on a swath height error of the substrate.
摘要:
The present invention includes as one embodiment an inkjet printing method for decreasing dot placement artifacts of a thermal inkjet printhead having at least one substrate having nozzle rows each associated with a print data row, the method including variably mapping each nozzle row to a print data row based on a swath height error of the substrate to reduce the artifacts caused by the swath height error.
摘要:
Within a printer, compensation is provided for color migration within ink drops. Color compensation is provided by varying firing frequency of each print nozzle so as to fire high frequency bursts of ink drops. Each print nozzle is idle, not being used to eject ink drops, between high frequency bursts of ink drops.
摘要:
A media print system includes two or more printhead carriages adapted to print on a medium in a print area, the print area including two or more print regions. Each of the printhead carriages is adapted to print in one or more of the print regions. The system also includes a controller adapted to reconfigure a positioning of the two or more printhead carriages in a configuration selected from a predetermined set of configurations. The controller is adapted to reconfigure the positioning each time a predetermined criterion is satisfied.
摘要:
A printer having precision ink drying capability and method of assembling the printer. The printer comprises a print head that is adapted to eject a plurality of ink drops through outlet orifices defined by the print head. The ink drops form a plurality of ink marks at a plurality of locations on a recording medium positioned opposite the outlet orifices. A plurality of heaters is disposed near the print head for heating the ink marks on the recording media in order to dry the ink marks. Drying the ink marks fixes the ink to the recording media. A plurality of sensors, that are disposed near the print head are also coupled to respective ones of the heaters for sensing the locations of the ink marks on the recording media. In addition, a controller interconnects each of the heaters to respective ones of the sensors for selectively energizing the heaters according to the locations of the ink marks sensed on the recording media by the sensors. Thus, the controller selectively informs the heaters of the locations of the ink marks on the recording media as the sensors sense the ink marks. In this manner, the heaters dry only the locations having ink marks with optimized energy output.
摘要:
A printing method that includes supplying ink from an ink reservoir through an ink channel that connects the ink reservoir with ink ejection chambers formed on a first surface of a substrate. The ink channel is connected at a first end to the ink reservoir and at a second end to a separate inlet passage for refilling each of the ink ejection chambers with ink. A group of the ink ejection chambers in adjacent relationship forms one of a plurality of primitives on the first surface of the substrate in which only a maximum of one of the ink ejection chambers is energized at a time. An ejection element within one of the ink ejection chambers is energized to cause the plurality of ink drops to be ejected onto a media surface at a single pixel location in a single pass of the substrate over the media surface.
摘要:
An inkjet print cartridge that includes a substrate having a plurality of ink ejection chambers with an ink ejection element in each of the ink ejection chambers, an ink channel connecting at one end to an inlet passage connected to one of the ink ejection chambers for refilling the one of the ink ejection chambers with ink, a group of the ink ejection chambers in adjacent relationship forming a primitive in which a maximum of only one of the ink ejection chambers in the primitive is activated at a time, first circuit on the substrate coupled to the ink ejection elements in the ink ejection chambers, wherein the first circuit applying primitive select signals to select one or more of the primitives and applying address line select signals to enable devices associated with the ink ejection elements in one or more selected primitives such that a maximum of one of the ink ejection chambers in each of the selected primitive is energized at a time causing a plurality of ink drops to be ejected from the one of the ink ejection chambers onto a media surface at a single pixel location in a single pass of the print cartridge.
摘要:
Data input received by a printer is printed. Dot data, which indicates location of dots on a print medium, is generated from the data input. Dot shift data is used in order to make sub-pixel shifts in locations of a subset of the dots on the print medium. Pulses are provided to a printhead which result in ink being emitted through nozzles located on the printhead. When placing the dots on the print medium, sub-pixel shifts in locations of the subset of the dots is achieved by time shifting the occurrence of pulses used to generate the dots.
摘要:
An inkjet print cartridge includes an ink supply and a substrate having a plurality of individual ink ejection chambers defined by a barrier layer formed on a first surface of the substrate and having an ink ejection element in each of the ink ejection chambers to eject ink drops. A nozzle having a plurality of ink orifices formed therein overlies the barrier layer with the orifices aligned and associated with the ink ejection chambers. An ink channel connects an ink supply. A group of the ink ejection chambers in adjacent relationship forms a primitive in which a maximum of only one ejection chamber in the primitive is energized at a time and the primitive is one of a plurality of primitives on the substrate. A first circuit on the substrate is connected to the ink ejection elements and a second circuit on the print cartridge is connected to the first circuit to transmit ejection signals to the ink ejection elements at high frequency. The first circuit applies primitive select signals to select one or more of the primitives and applies address line select signals to enable devices associated with the ink ejection elements in one or more of the selected primitives such that a maximum of one ink ejection chamber in a selected primitive is activated at a time.