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    • 26. 发明授权
    • Systems and methods for calibrating inkjet print head nozzles using light transmittance measured through deposited ink
    • 使用通过沉积墨水测量的透光度来校准喷墨打印头喷嘴的系统和方法
    • US07992956B2
    • 2011-08-09
    • US11758631
    • 2007-06-05
    • Quanyuan ShangJohn M. White
    • Quanyuan ShangJohn M. White
    • B41J29/393
    • B41J29/393
    • The present invention provides inkjet print nozzle calibration systems and methods for calibrating an inkjet print nozzle. The systems may include an inkjet print nozzle adapted to dispense ink onto a substrate in response to a firing pulse voltage, a light source adapted to illuminate the dispensed ink, an imaging system adapted to measure a transmittance of light through the dispensed ink, and a controller adapted to controllably adjust the inkjet print nozzle based on the measured light transmittance. The methods may include dispensing ink onto a surface with an inkjet print nozzle set at a firing pulse voltage, measuring a light transmittance characteristic of the dispensed ink, determining a volume of ink dispensed based on the transmittance characteristic, and adjusting a fire pulse voltage of the inkjet print nozzle based on a difference between the determined volume of ink dispensed and an expected volume level of ink dispensed.
    • 本发明提供喷墨打印喷嘴校准系统和用于校准喷墨打印喷嘴的方法。 系统可以包括喷墨打印喷嘴,其适于响应于点火脉冲电压将油墨分配到衬底上,适合于照亮所分配的油墨的光源,适于测量通过分配的油墨的光的透射率的成像系统,以及 控制器,其适于基于测量的透光率可控地调节喷墨打印喷嘴。 所述方法可以包括将墨水分配到具有设置在点火脉冲电压的喷墨打印喷嘴的表面上,测量所分配的墨水的透光率特性,基于透射特性确定分配的墨水体积,以及调节喷射脉冲电压 喷墨打印喷嘴基于确定的墨水分配量和分配的墨水的预期体积水平之间的差异。