Mita Industrial Co., Ltd.

Kyocera Mita Corporation

Yasuyuki Hirai

Shingo Mori

Hiromi Sakata

Masahiro Higashitani

Yasuhiro Matsuo

Masahiro Sako

Kuniaki Nakano

Minoru Kishigami

Yasuyuki Ishiguro

Yukio Hashimoto

Tetsuro Kawashima

Toshinori Nishimura

Hideki Takeda

Hiroyuki Harada

Hideki Kitagawa

Masayuki Yamada

Masami Fuchi

Naoyuki Ishida

Kiyonori Yamamoto

Hiroshi Kusumoto

Satoru Yonemoto

Yoshihiro Yamaguchi

Takeshi Okuda

Shigeo Kurando

Yoshihisa Tanaka

Hidehiro Tabuchi

Yukihiro Ito

Ryoji Nishimura

Yoshiyuki Takeda

Tsutomu Sugaya

Tsugio Nakanishi

Kotaro Kawasaki

Tadashi Fujioka

Yoshinobu Takemura

Nobuyuki Kashiwagi

Makoto Okado

Toshiyuki Osaka

Shinsuke Kawashima

Masaki Higashiyama

Kunio Nakai

Mitsuru Adachi

Kazuhiro Morimoto

Kouji Ujino

Minoru Matsushita

An original document feed tray is positioned above an original document output tray. When original documents are set on the original document feed tray, the original document feed tray is moved upwardly from a home position to a position where the uppermost original document sheet can be transported to an original document transport mechanism. When the original document feed tray is lifted in accordance with the reduction of the original documents on the original document feed tray after the original documents are transported to the original document transport mechanism, the original document feed tray is lifted to a position, above the position where all original documents on the original document feed tray were transported to the original document transport mechanism.

Original document transport device

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 feeder apparatus arranged on a side of a main body of an image forming apparatus is provided with a top door and a vertical door. The top door is provided in an opening defined above a sheet stacker, and the vertical door is provided in an opening defined on a side of the sheet stacker to enable an operator to replenish sheets inside the feeder apparatus. Switches are provided to detect as to whether the top door or the vertical door is opened. The feeder apparatus is constructed in such a manner that upward movement of the sheet stacker is suspended when the top door is detected to be opened and that upward and downward movement of the sheet stacker is suspended when the vertical door is detected to be opened.

Paper feeder apparatus for use with image forming apparatus

An image forming machine having a reversing transport path in which a transport direction of a sheet introduced from an image forming transport path is reversed, a returning path in which the sheet reversely transported from the reversing transport path is returned below the image forming transport path with the directions of the face and back of the sheet being unchanged, and an inverting transport path in which the sheet from the returning path is turned upside down and readmitted into an upstream portion of the image forming transport path. A finisher including a sheet receiving stand placed below the returning path is provided, and at least one send-in unit for selectively sending in different length sheets onto the sheet receiving stand is disposed in the returning path.

Image forming machine having finisher for different length sheets

An image forming device connected to one or more data processing devices is disclosed, and includes a printer unit, a copying unit, a document transport unit for transporting documents printed in the printer unit to a document mounting unit on the copying unit, and a guide member for moving the printer unit between a first position adjacent to the document mounting unit on the copying unit and a second position separated from the document mounting unit. The data processing device sends print jobs to the printer unit, and if multiple copies are desired, the printed documents are sent to the copying unit by the document transport device and copied.

Image forming device with a printer unit and a copying unit

A developing device includes a toner container for supplying toner; and a container receptacle for receiving the toner container therein. The container receptacle includes a positioning plate for positioning the toner container with respect thereto by making contact with a frontal end of the toner container in an insertion direction, and engaging means provided on the positioning plate. The engaging means has a first engaging member, and a second engaging member partially surrounding the contour of the first engaging member when viewed from a rear end of the toner container in the insertion direction.

Developing device for image forming apparatus, toner container

An opening for discharging toner is formed in a lower part of a cartridge body containing toner. A shutter mounting body is mounted on the opening. A first shutter is slidably mounted on the shutter mounting body. A second shutter is slidably mounted on the first shutter. A front end of a sealing member for sealing the opening is extended, the extended front end being inserted through a seal traction opening formed in a front end of the second shutter, and fixed to a front end of the first shutter. When the second shutter is pulled out of the shutter mounting body, the sealing member is towed by the seal traction opening. In addition, the first shutter is further towed by the sealing member, to be also pulled out. Consequently, nearly half of the sealing member from its front end is stripped. When the second shutter is further pulled out after the movement of the first shutter is regulated, the seal traction opening in the second shutter tows the sealing member while allowing the insertion of the sealing member. At this time, the sealing member is stripped while being so folded that a toner adhering surface is located in its inside. In this construction, the stroke for stripping is decreased, thereby to make it possible to prevent contamination by toner as well as prevent a large part of the sealing member from being ineffective.

Method of stripping a sealing member from a toner cartridge

It is a major object of the present invention to break down and level a heap-up of toner built in the hopper through dropping from the cartridge when feeding toner into the hopper and to prevent toner from leakage from the cartridge due to erroneous operation with a remarkably simple and cheap construction. Namely, the leveling member moves a plurality of number of times in line with engaging and disengaging operation of the cartridge for the hopper and opening and closing operation of the cartridge in the same direction of the shutter, thereby causing a heap-up of toner built in the hopper housing of the hopper to be effectively broken down and leveled. Furthermore, only when the shutter is in its closed status for the cartridge, the cartridge can be removed from the opening of the hopper.

Toner feeding device

Toner cartridge having opening for discharging toner sealed with sealing

An electrostatic latent image-developing device is equipped with a toner cartridge-holding means and a toner cartridge fitted thereto. The toner cartridge includes a container with a toner discharge openings, a toner contained in the container, and a sealing means for sealing the toner discharge opening. The sealing means is constituted by a tape member that is provided to move across the toner discharge opening, and a toner passage opening is formed in the tape member. The toner discharge opening is opened when the tape member is so moved that the toner passage opening is positioned at the toner discharge opening. The toner cartridge-holding means includes a hoist frame that moves up and down, and the toner cartridge is held in this hoist frame.

Electrostatic latent image-developing device and toner cartridge used

An image forming apparatus which facilitates the input and output of copy paper. One embodiment includes an image forming apparatus with paper supply trays, a development area, a console and a sorter. By pressing a transparent paper mode key on the console, normal and projector paper are sequentially fed from the trays to the development area and then to the sorter. The sorter is set in one of three modes by a sorter instructor. A manual key on the console allows an operator to set the instructor to position the sorter in any one of the three modes. The pressing of the transparent paper mode key or the detection by a detector of transparent paper in the feeding tray results in the instructor setting the sorter in a non-sort mode despite the sort instructor having been previously set in a different mode. Also, another embodiment of the invention includes a judging device for judging whether a cover copy mode or a page numbering mode has been inputted to the copying assembly and, if so, then the sorter instructor sets the sorter in a sort mode. Another embodiment uses a selecting device to match the detected size and orientation of the transparent paper with a similar detected size in one of a plurality of cassettes containing non-transparent paper. An additional embodiment features rear and face discharging modes which, when set, result in a predetermined positioning and sequencing of the transparent projector and normal paper.

Image forming apparatus having means for coordinating the input and

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Osaka, Japan

Yasuyuki Hirai