Invention Grant
US09120315B2 Droplet ejection device and image forming apparatus including the droplet ejection device 有权
液滴喷射装置和包括液滴喷射装置的图像形成装置

  • Patent Title: Droplet ejection device and image forming apparatus including the droplet ejection device
  • Patent Title (中): 液滴喷射装置和包括液滴喷射装置的图像形成装置
  • Application No.: US13937301
    Application Date: 2013-07-09
  • Publication No.: US09120315B2
    Publication Date: 2015-09-01
  • Inventor: Tomomi Katoh
  • Applicant: Tomomi Katoh
  • Applicant Address: JP Tokyo
  • Assignee: RICOH COMPANY, LTD.
  • Current Assignee: RICOH COMPANY, LTD.
  • Current Assignee Address: JP Tokyo
  • Agency: Cooper & Dunham LLP
  • Priority: JP2012-154329 20120710
  • Main IPC: B41J2/165
  • IPC: B41J2/165
Droplet ejection device and image forming apparatus including the droplet ejection device
Abstract:
A droplet ejection device includes a recording head having a nozzle face with nozzles to eject droplets, a maintenance assembly including a cap to seal the nozzle face to form a sealed space therein and a wiper to wipe the nozzle face, a droplet suction channel connected to the cap to collect droplets sucked from the nozzles, and an air release channel connected to the cap to introduce air to return the sealed space to atmospheric pressure. The suction channel and the release channel are communicable with the sealed space to simultaneously perform collection of the droplets sucked from the nozzles and introduction of air into the cap. The suction channel has a flow rate greater than the release channel. When the droplets are sucked from the nozzles into the suction channel, air is introduced from the release channel at a flow rate lower than that of the suction channel.
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