11.12.20
Hitoshi Sato, Osaka, Japan; and Hideyuki Nakamura, Osaka, Japan.
Assigned to Zuiko Corporation, Osaka, Japan.
Filed: 1/25/17
Issued: 10/6/20
A powder supply method for supplying a powder to a sheet being conveyed along a conveyance path, the powder supply method comprising: dropping the powder from a storage section storing therein the powder, to distribute the powder onto a surface of the sheet through a distribution port; moving a first opening-closing portion such that the first opening-closing portion periodically overlaps the distribution port when viewed from vertically above the distribution port, to periodically close the distribution port by the first opening-closing portion; moving a second opening-closing portion such that the second opening-closing portion overlaps the distribution port when viewed from vertically above the distribution port, in a same cycle period as that of the first opening-closing portion and at a timing later than that of the first opening-closing portion, to periodically close the distribution port by the second opening-closing portion, and moving the second opening-closing portion such that the second opening-closing portion extends from an upstream-side edge of the first opening-closing portion lying on an upstream side of a movement direction of the first opening-closing portion toward the upstream side of the movement direction of the first opening-closing portion, during a time period during which the upstream-side edge of the first opening-closing portion overlaps the distribution port, when viewed from vertically above the distribution port; and setting a difference between a timing at which the second opening-closing portion overlaps the distribution port when viewed from vertically above the distribution port, and a timing at which the first opening-closing portion overlaps the distribution port when viewed from vertically above the distribution port.
Assigned to Zuiko Corporation, Osaka, Japan.
Filed: 1/25/17
Issued: 10/6/20
A powder supply method for supplying a powder to a sheet being conveyed along a conveyance path, the powder supply method comprising: dropping the powder from a storage section storing therein the powder, to distribute the powder onto a surface of the sheet through a distribution port; moving a first opening-closing portion such that the first opening-closing portion periodically overlaps the distribution port when viewed from vertically above the distribution port, to periodically close the distribution port by the first opening-closing portion; moving a second opening-closing portion such that the second opening-closing portion overlaps the distribution port when viewed from vertically above the distribution port, in a same cycle period as that of the first opening-closing portion and at a timing later than that of the first opening-closing portion, to periodically close the distribution port by the second opening-closing portion, and moving the second opening-closing portion such that the second opening-closing portion extends from an upstream-side edge of the first opening-closing portion lying on an upstream side of a movement direction of the first opening-closing portion toward the upstream side of the movement direction of the first opening-closing portion, during a time period during which the upstream-side edge of the first opening-closing portion overlaps the distribution port, when viewed from vertically above the distribution port; and setting a difference between a timing at which the second opening-closing portion overlaps the distribution port when viewed from vertically above the distribution port, and a timing at which the first opening-closing portion overlaps the distribution port when viewed from vertically above the distribution port.