US 9,950,508 B2Granted

Electrostatic screen printer

AssigneeHitachi Zosen Corporation

InventorsHideyuki Fukui, Kenji Okamoto, Yasushi Takano

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Abstract

An electrostatic screen printer includes: an electrically conductive screen arranged in non-contact with a printing medium; sponges for rubbing a powder into the screen; and a direct current power source for applying a voltage to the printing medium and the powder, wherein the powder rubbed into the screen is adhered to the printing medium by electrostatic induction. The electrostatic screen printer includes a rotation mechanism for rotating the sponges, a parent revolution mechanism for parent revolution of the sponges, and a child revolution mechanism for child revolution of the sponges. The revolution speed ratio of the child revolution to the parent revolution may preferably be 4.0 or greater, a scraper is provided on the parent revolution mechanism so as to be interlocked with the revolution of the sponges, and the scraper is arranged so as to scrape the powder on the screen toward an axis of the parent revolution because of the interlocking.

Claims9

Dependent claims

An electrostatic screen printer comprising:

an electrically conductive screen arranged in non-contact with a printing medium;
at least one rubbing member configured to rub a powder into the screen;
a direct current power source configured to apply a voltage to the printing medium and the powder, the powder rubbed into the screen being adhered to the printing medium by electrostatic induction;
a rotation mechanism configured to rotate the at least one rubbing member, the rotation mechanism comprising a first rotation shaft providing a rotation axis of the at least one rubbing member such that the at least one rubbing member is configured to rotate about the rotation axis on the first shaft;
and
a revolution mechanism configured to revolve the at least one rubbing member, the revolution mechanism comprising a revolution shaft providing a revolution axis of the at least one rubbing member and a revolution arm connected to the revolution shaft, wherein the at least one rubbing member is mounted to the revolution arm such that the at least one rubbing member is configured to revolve about the revolution axis;
wherein the rotation axis and the revolution axis are parallel to and spaced apart from one another.

4 more elements

Dependencies are inferred from the claim text.