Riso Kagaku Corporation

Akinori Maekawa

Taku Naitou

Tadayuki Wakatabi

Masakazu Kawano

An enclosing-sealing device for preparing a sealed matter by sealing an envelope with a content enclosed in the envelope includes a content formation unit, an envelope formation unit, a content delivery unit, a seal unit, a delivery timing determiner, and a delivery controller. The content delivery unit delivers the content delivered from the content formation unit to the envelope formation unit such that the content is enclosed in a sheet of envelope paper while being folded. The seal unit seals the envelope delivered from the envelope formation unit with the content enclosed in the envelope. The delivery timing determiner determines a delivery timing of the content by the content delivery unit based on inputted information about at least one of the content and the envelope. The delivery controller controls the content delivery unit to deliver the content to the envelope formation unit in accordance with the determined delivery timing.

Enclosing-sealing device and image formation system having the same

A sheet folding device includes: a sheet receiving unit with a pair of guide plates to restrict opposite sides of one or a plurality of stacked sheets and a striking portion to be struck by leading ends of the introduced sheets; a roller group to introduce the sheets into the sheet receiving unit, strike the introduced sheets on the striking portion to form a bent portion on the sheets, and nip and fold the formed bent portion and discharge the sheets from the sheet receiving unit; and a curve forming unit to form a curved portion on the sheets, at a position closer to the leading ends of the sheets than a position where the bent portion to be folded by the roller group is formed, the curved portion being curved in a width direction perpendicular to a direction of transfer of the sheets.

Sheet folding device

The envelope sheet includes a first area provided with a flap, a second area extended from the first area with interposing a first fold line, a third area extended from the second area with interposing a second fold line, and an adhesive pasted area formed on the third area and extended along a direction perpendicular to a feed direction. The envelope sheet is configured to be, in a stuff and seal apparatus, preliminarily folded at the second fold line while a content is stuffed thereinto, and then fed forward together with the content by at least two pairs of the feed rollers. A length of the third area along the feed direction is made equal-to or longer-than a distance between the two pairs of feed rollers. According to the envelope sheet, the content can be prevented from being inadequately stuffed into an envelope transformed from the envelope sheet.

Envelope sheet

A water application unit includes a reservoir configured to pool water and a water application pad configured to apply the water pooled in the reservoir onto a remoistenable glue portion previously attached to an adhesion position on a sheet being transferred. The water application pad includes a first pad member disposed at a position to be immersed in the reservoir and including first pores for sucking up the water in the reservoir and a second pad member disposed at a position to face the remoistenable glue portion while being in contact with the first pad member and including second pores for applying the water onto the remoistenable glue portion. The second pores has a diameter larger than a diameter of the first pores.

Growing community of inventors

Ibaraki-ken, Japan

Akinori Maekawa