Matsushita Electric Industrial Co., Ltd.

Tadashi Hayamizu

Shinichi Tanaka

Masayoshi Kondou

Kazuhiro Kumadaki

Hideaki Yamashita

Kiichiro Tanaka

In an image forming apparatus having a double side printing function, paper on which printing has been completed is prevented from being caught between paper ejection rollers. The apparatus has a first paper ejection roller which is provided at a terminal end section of a paper transport path, a second paper ejection roller which is provided such that it is urged into contact with the first paper ejection roller to switch back printed paper in a double side printing mode in cooperation with the first paper ejection roller, a third paper ejection roller which is provided in a position opposite to the second paper ejection roller such that it is urged into contact with the first paper ejection roller to eject paper on which printing has been completed in the double side printing mode onto an ejected paper tray in cooperation with the first paper ejection roller, and a stopper for preventing the paper ejected onto the ejected paper tray from being caught between the first and second paper ejection rollers and between the first and third paper ejection rollers.

Image forming apparatus

An image forming apparatus includes a media feed cassettethat is detachably attached to the image forming apparatus and contains medias used for printing therein. The media feed cassetteincludes a chassis; a cassette-side media stacking portionwhich is mounted to said chassisand contains medias therein, and is located within said image forming apparatus when it is attached to said image forming apparatus; a tray-side media stacking portionbeing attached to said chassissuch that said tray-side media stacking portion is extendable to outside of said image forming apparatus, medias being put in said tray-side media stacking portion when it is extended outside; and a pickup unitfor picking up, sheet by sheet, medias put on said tray-side media stacking portion

An image-transferring system which may be employed in an electrophotographic type of copying machine. The image-transferring system includes an image transfer member on which a toner image is formed, a transfer roller arranged to hold a transfer paper along with the image transfer member to transfer the toner image formed on the image transfer member onto the transfer paper, a cleaner arranged to clean a surface of the transfer roller before the image-transferring operation, and a cleaner supporting member which is designed to support the cleaner for controlling a cleaning operation of the cleaner with given timing where the cleaner engages the transfer roller in response to engagement motion of the transfer roller with the image transfer member.

Image transfer device with cleaner for electrophotographic copying

A printing apparatus having a paper positioning plate swingably supported and having two positions in operation. The first position temporarily stops the carrying of an edge of a paper sheet by engaging the edge. The second position allows the paper sheet to be freely carried. The portion of the paper positioning plate which engages the edge of the paper sheet is curved as an arc having its axis on the axis of swing of the paper positioning plate. Thus, the swinging motion of the paper positioning plate does not create a strong frictional force at the edge of the sheet of paper and hence no paper particles are produced.

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Fukuoka, Japan

Tadashi Hayamizu