Fujitsu Corporation

Keiji Ohyabu

Shinichi Watarai

Youji Houki

Tomohiro Nonomura

Hideaki Sano

A sheet feed apparatus of a recording apparatus, for feeding a sheet one-by-one from a stack of cut sheets, includes cassettes which are stacked one above the other. Each cassette has a common sheet sub-passage passing through the cassette from bottom to top. The sub-passages are aligned to form a common sheet feed passage which passes through the stack of the cassettes from bottom to top when all the cassettes are set in a normal position within the recording apparatus. Sheet feed passages formed in the cassettes are disposed end-to-end.

Apparatus for selectively feeding cut sheets in a recording machine

An image forming apparatus has upper and lower frames. A fixing unit detachably mounted on one frame is provided with a heated roller and a pressure roller. One end of a lever is positioned to be pushed by the other frame when the frames are in a closed condition, and the other end of the lever pushes the pressure roller at both ends of its shaft transversally towards the heated roller so as to pinch therebetween and heat a sheet having a toner image thereon. When the frames are disengaged and moved to their opened condition the pressure on the lever is released, whereupon the pressure roller separates from the heated roller so that the pressure on the sheet is released to facilitate easy removal of the sheet.

Image forming apparatus including detachable toner fixing unit

A gap produced between a sheet intruding guide and a surface of a drum is kept to a predetermined value with an allowable tolerance by positioning the sheet intruding guide together with an image transcription unit placed under the drum and constantly pushed toward the drum surface so that a space between the drum surface and the image transcription unit is kept constant. The sheet intruding guide can be lifted up and held away from the image transcription unit when the drum is removed upward, and released from the holding and set back to its regular position mechanically when the drum is lowered back to its regular position.

Growing community of inventors

Tokyo, Japan

Keiji Ohyabu