Kyocera Mita Corporation

Mita Industrial Co., Ltd.

Shinsuke Kawashima

Satoru Yonemoto

Ryoji Nishimura

Hideki Kitagawa

Hironori Takahashi

Naoyuki Ishida

Shinichi Kotera

Yuzo Onishi

Yukihiro Ito

Katsuhiro Yoshiuchi

Tsuyoshi Koyanagi

Hideki Takeda

Yasuyuki Hirai

Kotaro Kawasaki

Hirohisa Endo

An automatic document feeder () has a front plate () located on one of opposite sides of the document feeder in a direction orthogonal to a feeding direction of documents P on a document tray (), and on the side opposed to an operator. A rear plate () is on the other side opposed to the front plate (). An intermediate transport unit () located between the front plate () and the rear plate () has a frame with an outer wall surface () serving as a lower guide surface of document transport path. The front plate () has an outer edge () at a height equal to or lower than the outer wall surface (), so as to allow the operator to visually check the document (P) on the outer wall surface () from the direction orthogonal to the feeding direction of the documents (P).

Automatic document feeder and image forming apparatus equipped with the same

A document conveying apparatus () includes a conveying unit () inside a document feeding section (), and the conveying unit () includes two fans () for cooling the inside of the document conveying apparatus (). The fans () are arranged to pass air from upstream to downstream with respect to the document conveying direction. Thus, the stream of air produced by the fan () flows along the document conveying direction so that a document sheet is conveyed without being affected by a braking effect. Moreover, the air stream produced by the fan () flows along the document conveying passage () both on the air intake side and the air exhaust side of the fan (). This facilitates the conveying of a document sheet by pulling it on the air intake side of the fan () and pushing it on the air exhaust side of the fan ().

Document conveying apparatus

In a developing device according to the present invention, a developing roller has a fixed shaft and a sleeve . The length of a draw-up magnetic pole N provided in the fixed shaft is made shorter than the length of a main magnetic pole N . Accordingly, the amount of a developer adhering to both ends of an outer peripheral surface of the sleeve is reduced, so that the density of the developer at both the ends of the sleeve is maintained in suitable conditions in a state where the developer is over the main magnetic pole N

Developing device for preventing thickening of the developer at both ends of a sleeve

A cleaning device according to the present invention has first seals and a second seal adhered so as to partly overlap each other for sealing a space between a housing of the cleaning device and the surface of a photoreceptive member. The first seals include seal bases and a flocked sheet layered on the seal bases. The portion of the seal base where the second seal overlaps is made smaller in thickness than the portion of the seal base where the second seal does not overlap. Therefore, no step is formed in the overlapped portion, thereby preventing toner leakage.

Toner seal for a cleaning device

An image-forming machine having a photosensitive drum disposed in the machine housing, a movable mounting plate disposed in the machine housing so as to be moved toward, and away from, the photosensitive material drum, a developing device detachably mounted on the movable mounting plate from the front side of the machine housing, and a push-operation mechanism for moving the developing device and the movable mounting plate between a push position close to the photosensitive material drum and a push-release position moved away from the push position. A separator wall is provided in the direction of width on the bottom wall that constitutes the developing housing of the developing device to partition a conveying passage of the stirring/conveying device, and guide grooves are formed in the bottom surface of the bottom wall provided with the separator wall, the guide grooves extending from an end of the back side toward the front side, and operation pins constituting the push-operation mechanism are fitted into the guide grooves formed in the bottom wall constituting the developing housing through guide holes formed in the movable mounting plate.

Image-forming machine with detachable developing device

Growing community of inventors

Osaka, Japan

Shinsuke Kawashima