Patents by Inventor Leile Zeng

Leile Zeng has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Maintenance system for spray head, inkjet printer, maintenance method and printing method
    Patent number: 11724505
    Abstract: A maintenance system for spray head includes an ink cavity of the spray head communication with the external environment through spray holes. The ink cavity of the spray head is connected with a first accommodating cavity of a first regulating device through a pipeline; when the ink in the ink circulation loop is in a circulating flow state, the ink flows into the ink cavity of the spray head from the first accommodating cavity; because the first accommodating cavity and the ink cavity of the spray head are in a communication state, the change of the first air pressure within the first negative pressure range can make the ink in the first accommodating cavity and the ink cavity of the spray head oscillate at the same time.
    Type: Grant
    Filed: September 16, 2022
    Date of Patent: August 15, 2023
    Assignee: SHENZHEN CNTOP DIGITAL EQUIPMENT CO., LTD.
    Inventors: Shuzhang Liao, Hua Jiang, Leile Zeng, Wei Lin