Image forming apparatus
AssigneeCanon Kabushiki Kaisha
InventorsKazuhiko Yatsuhashi, Akihiro Toma
Life of this patent
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Abstract
An image forming apparatus aims at eliminating a possibility of causing deterioration in conveying and scratching off toners on a recording medium by smoothly rotating a driven roller corresponding to rotations of a driving roller. Rubber rings spaced away in an axial direction from the driving roller are fitted to a shaft of a driven roller brought into contact with the driving roller. A record sheet conveyed with rotations of the driving roller rotates the rubber rings, whereby the driven roller can be surely rotated.
Claims16
An image forming apparatus comprising an image forming portion for forming an image on a sheet-like recording medium and a convey member for conveying the sheet-like recording medium discharged from said image forming portion,
- said convey member is characterized by:
- a driving roller;
- a driven roller rotated while being pressed into contact with said driving roller;
- and
- an auxiliary rotary member fitted to at least one end of a shaft of said driven roller and rotated upon a contact with the sheet-like recording medium conveyed with rotations of said driving roller, for transmitting the rotations thereof to said driven roller.
A sheet conveying apparatus for discharging a sheet onto a tray, comprising:
- a driving roller for discharging the sheet sent from a processing portion onto the tray;
- a roller pressed into contact with said driving roller and rotated following to said driving roller;
- and
- an auxiliary rotary member, fitted to a shaft of said roller, disposed in a position not facing to said driving roller and having a diameter larger than that of said roller to be rotated following up the sheet conveyed, for transmitting the rotations thereof to said roller.
Dependencies are inferred from the claim text.