Riso Kagaku Corporation

Kaoru Kimura

Masakatsu Arai

Hitoshi Watanabe

Kenji Oshima

Masakazu Miyata

Hirohide Hashimoto

Tomohiro Ogawa

Sigeyuki Chuugun

An image forming system includes a mounting portion in which an expendable provided with a memory in which distinguishment information representing whether the expendable is compatible is stored is removably installed. The distinguishment information stored in the memory of the expendable installed in the mounting portion is read out, and operation of a predetermined object is controlled on the basis of a control information according to the distinguishment information when the distinguishment information read out represents that the expendable is compatible. A control information input mechanism for inputting control information of the object when the distinguishment information read out represents that the expendable is incompatible is further provided and the operation of the object is controlled on the basis of the control information input by the control information input mechanism when the distinguishment information read out from the memory of the expendable represents that the expendable is incompatible.

Ink container and ink container loading structure

An ink container includes an ink container body and a memory attached to the ink container body for storing predetermined information. The memory is bonded to a part of the surface of the ink container body at its surface opposed to the surface of the ink container body over an area not larger than 90% of its surface facing toward said part of the surface of the ink container body.

Ink container

A stencil printing ink container includes an ink container body. An ink charge port is provided in an end wall of the ink container body and an inner plug is mounted on the ink charge port. The inner plug is provided with an ink discharge port smaller in the outer diameter than the inner diameter of the ink charge port and gives an ink suction nozzle of an ink pump access to the ink discharge port.

Stencil printing ink container, stencil printing ink cartridge, method of manufacturing the ink cartridge, and inner plug for the ink container

A piston-type ink container is inserted into an ink container holder of a stencil printer so that an ink suction nozzle of the stencil printer is fitted in a small diameter portion of the ink container to suck the ink in the ink container through an ink discharge port on the tip of the small diameter portion. A vacuum release mechanism at least partly releases vacuum in the space evacuated by the ink suction nozzle before the tip of the nozzle and the tip of the small diameter portion are aligned with each other when the ink container is drawn from the ink container holder.

Ink supply system and ink supply method for stencil printer and ink container

According to the stencil making and attaching method of a printing device of the present invention, independent of variations in the detection of the stencil sheet set position detection sensor and variations in the clamped state due to curled stencil sheet, etc., it is possible to always set the image-formation start position of the stencil sheet at a regular position with respect to the drum rotation position, and consequently to improve the positional precision of the printing operation.

Stencil making and attaching method of printing device

A stencil making device includes supporting a supporting device for rotatably supporting a rolled stencil a sheet; perforating device for perforating the stencil sheet conveyed from the supporting device to form an image therein; a pair of rollers rotatably disposed between the supporting device and the perforating device to hold the stencil sheet therebetween; and a torque applying device attached to one of the rollers to apply a predetermined torque to the roller when it rotates.

Stencil making device

A stencil forming apparatus in which a stencil for a stencil printing formed from a rolled stencil sheet, includes: a guide roller; a rotatable platen roller having a central axis which is in parallel with the guide roller; a thermal head having a plurality of heat generating elements, and provided above the platen roller, wherein the stencil sheet pulled out of the rolled stencil sheet is passed through the platen roller and the thermal head through the guide roller and is subjected to thermally making fine holes thereon (the stencil of the stencil printing); and an intermediate roller provided between the platen roller and the guide roller wherein the intermediate roller is vertically movable in a predetermined range.

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Ibaraki-ken, Japan

Kaoru Kimura