Abstract

Xaar technology can print at 360 dpi with 8 levels of grey; this capability is reaching the market in the form of the XaarJet XJ500S.Xaar achieves greyscale printing by rapid ejection of multiple droplets, which merge to produce a single dot on the paper. The basic piezoelectric operation of the technology is explained, whereby shear mode deformation of shared walls causes acoustic waves in channels, resulting in ejection of droplets. The waveforms used to operate the printhead are explained.The nozzle plate is made of polyimide; the nozzles are ablated, nine at a time, using an excimer laser and special optics. Great care is taken over cleanliness, in order to avoid nozzle blockages; integrated filters are provided to each of the four colour manifolds.The printheads incorporates an RS232 interface for printhead configuration and a 4-bit bus for data communication, a microcontroller, EEPROM for configuration storage, voltage control according to actuator temperature, and special purpose drive chips.The actuator and electronics are mounted on an aluminium chassis to provided good heat sinking, and special waveforms can be used on non-fired channels to maintain temperature uniformity.

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.