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inkjet printing method

A technology of printing direction and printing system, applied in the direction of printing, visual representation of matrix printers, visual demonstrations using printers, etc., can solve problems such as unrealization, and achieve the effect of avoiding image stretching and minimizing visual impact

Active Publication Date: 2022-03-01
GLOBAL INKJET SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this object cannot be achieved due to the limitation of the shortest drive cycle of the inkjet print head or the shortest drive cycle of the electronic drive circuit.
This overdrive is usually caused by variations or inaccuracies in the print speed control, making the relative speed between the printhead and the substrate too fast, however, for example, if the operator sets the travel speed too high, due to sensor Operating errors such as oscillations caused by shaking or artifacts in the encoder process can also lead to overdrive, which means that the printing system is being asked to drive too fast

Method used

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Examples

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Embodiment Construction

[0021] figure 1 Schematic illustration of a typical pixel sequence generated for a printing system drive request with an interval greater than the shortest drive period. In this case, each drive event has time to generate a pixel because the drive nozzles on the printhead can evenly and sequentially spaced to deposit fluid, such as ink, on the print substrate, such as Paper, card, board or fiber. In these cases, the printing system works well within its ideal limit, so there is no shift in pixel position due to the situation described above. As can be seen from the figure, the pixels from 'a' to 'n' are consistent and evenly spaced, so that a high-quality image can be obtained.

[0022] figure 2 Schematic illustration of a sequence of drive requests for a printing system where pixels are shifted significantly from 'a' to 'n'. As the drive request gets closer to the shortest drive cycle, subsequent drive requests enter the queue, so the drive request is delayed, resulting...

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PUM

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Abstract

A printing system for printing an image formed of pixels on a printing substrate, the system includes a printing system. In the printing system, a printhead moves back and forth across the substrate. The printing system receives a sequence of print driver requests to print each pixel of the image on the substrate, the printing system having an acceptable rate for the sequence of print driver requests. When the drive period provided to the system is shorter than the shortest drive period, the rate at which the print driver requests supply is adjusted by changing drive events and / or discarding striped data, thereby minimizing printing defects.

Description

technical field [0001] This application relates to inkjet printing and, in particular, to the relative speed of the printhead and substrate during operation of the printer such that the necessary drive cycle to maintain the desired spacing between printed pixels (pixel pitch) is shorter than that of the printhead or printing system Optimum print quality is maintained with the shortest drive cycle indicated by the timing of received drive requests. Background technique [0002] Existing inkjet printheads typically consist of an array of individually switched nozzles, each nozzle including a driver. When the actuator is driven, the nozzle ejects ink. These drivers are driven by an electronic drive circuit that provides the voltage waveform or common drive signal (drive event) used to cause the ink to eject from the nozzle. In many applications, the electronic drive circuit provides a common drive signal to multiple nozzles, while a separate or integrated controller provides ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B41J2/045G06K15/02G06T3/00G06T3/40G06K15/10B41J2/36
CPCB41J2/04503B41J2/04508G06K15/102B41J2/36B41J2/04586B41J2/04573
Inventor A·罗德里格斯D·史密斯N·格迪斯
Owner GLOBAL INKJET SYST