Nisca Corporation

Norihiro Ohno

Kazuyuki Kubota

Katsumasa Takagi

Hiroyuki Sorita

Jun Kondou

Misao Kobayashi

Masashi Yamashita

Eiichi Kubo

Shigeyuki Sanmiya

Tetsuyuki Tohyama

Takahiko Komatsu

Yoshinou Kouno

A glue container receiving hot-melt adhesive, an applicator roll, an apparatus casing, and disposed therein, a cooling unit and its control unit, for cooling a post-cover-sheet-processed sheaf, are provided. The control unit is configured to halt the cooling unit when adhesive is being applied to a sheaf with the applicator roll, and to actuate it after adhesive application. The control unit: (1) cools the apparatus casing interior by actuating the cooling unit when a sheaf is conveyed toward a glue application position; (2) halts the cooling unit when adhesive is being applied to a sheaf conveyed into the glue application position; and (3) reactivates the cooling unit after adhesive application. Thus controlling the apparatus-internal temperature appropriately in applying a hot-melt adhesive to a sheaf, and binding the sheaf together with a cover, etc. enables secure binding adhesion in a short time frame, without bookbinding defects such as missing leaves.

Adhesive applicator, and bookbinding and image-forming apparatuses equipped with the applicator

In replenishing a glue container with hot-melt glue, to enable stable supply of the glue in solid form without it clogging the resupply path from the hopper, provided are: a sheet retaining unit for retaining a sheaf in a glue application position; a glue applier in a hot-melt-glue-receiving container, disposed in the glue application position, for applying glue to an endface of a sheaf there; a heater, disposed in the glue container, for heating/melting the glue inside; a heater temperature controller; a resupply hopper above the glue container for replenishing it with solid glue; a vacuum ducting unit above the container and adjoining the resupply hopper, for suctioning up glue evaporation derivatives; and a control unit configured to run the vacuum ducting unit when the glue container is being replenished with glue, to prevent or mitigate invasion of evaporation derivatives into the resupply hopper.

Adhesive applicator, and bookbinding apparatus and image-forming system equipped with the applicator

A bookmaking apparatus executes sheet bundle stacking and image forming operations while melting adhesive at start up. A temperature control device controls a heating device to heat an adhesive in the container to a predetermined melting temperature when the apparatus power is turned on. A sheet conveyance device conveys and stack sheets sequentially from a conveyance path to the stacking tray while the temperature control device melts the adhesive.

Bookmaking apparatus and image forming system using the same

A document feeder is formed of a transfer path for allowing a document to pass therethrough, a transferring device situated along the transfer path for transferring the document along the transfer path, a stamping device situated near the transfer path for impressing a mark on a surface of the document transferred by the transferring device, and a setting device connected to the stamping device for setting a density of the mark on the document impressed by the stamping device so that the mark impressed on the document becomes substantially constant in the density when it is used. A driving device is connected to the transfer device for controlling a transferring speed of the document by the transferring device in accordance with density information set by the setting device. Therefore, even if ink itself in the stamping device is consumed, impressed mark can be identified by a user by controlling the density of the impressed mark.

Document feeder

An apparatus for automatically feeding sheets to an image forming device such as a copying machine is provided with a sheet register means formed of one or more outside rollers movable into and out of contact with one or more feed rollers in rotation and one or more inside rollers located side by side with the feed rollers, so that the outside rollers rotate when being in touch with the feed rollers to forward the sheet. The outside and inside rollers are rockingly moved by shifting means, so that, when the sheet is given from a sheet supply unit, the outside rollers is separated from the feed rollers to rest the outside and inside rollers so as to bring the sheet into collision with the resting outside and inside rollers to slightly bend the leading portion of the sheet, consequently fulfilling a registering function of correcting the orientation of the sheet with relation to a feeding direction. Thereafter, the sheet is forwarded through the register means by bringing the outside rollers in contact with the rotating feed rollers. The sheet feeding operation is performed can be carried out with high efficiency, since the sheet registering function can be performed without stopping rotation of the feed rollers.

Automatic sheet feeding apparatus

An automatic document feeder is formed of a transfer device having a transfer belt situated above a platen to transfer a sheet on the platen, and a belt motor for actuating the transfer belt, a sheet detecting device situated near the transfer belt for detecting the sheet, and a feeding device located near the transfer belt at a side of the sheet detecting device. The feeding device feeds the sheet between the transfer belt and the platen. A controlling device is electrically connected to the sheet detecting device and the belt motor. The controlling device, while the belt motor for transferring the sheet on the platen is actuating, outputs a stop signal to stop the belt motor when a predetermined time has passed after the sheet detecting device detects the sheet so that the sheet is placed on a predetermined position on the platen. The feeder further includes a compensating device connected to the controlling device. The compensating device assumes an amount of overrun of the belt motor from a time that the belt motor receives the stop signal to a time that the belt motor actually stops, and compensates a time that the stop signal is outputted from the controlling device based on the overrun amount. Thus, the sheet is stopped at the predetermined position.

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Minamikoma-gun, Japan

Norihiro Ohno