Abstract: An image forming apparatus includes an image bearing member. First and second developing devices developing a latent image formed on the image bearing member. A rotary member holds the first and second developing device. First and second drive receiving parts are provided at first and second side plates at opposite end portions in a longitudinal direction of the rotary member. A rotary shaft includes first and second drive transmitting parts engaged with the first and second drive receiving parts. A driving source drives the rotary shaft, which is rotated by driving power is transmitted to the first and second drive receiving parts and the rotary member is rotated. The rotary member includes a connecting member which has a “” shaped section for connecting a center of the first side plate and a center of the second side plate.

Abstract: An object of the present invention is to provide an image forming apparatus having a developing device changing rotary with a small number of components, and for this purpose, the image forming apparatus according to the present invention is constructed to include the following construction.

Abstract: An image forming apparatus including image forming unit for forming an unfixed image on a recording medium, a pair of fixing rotary members for fixing the unfixed image on the recording medium, a cleaning member for cleaning surfaces of the fixing rotary members, the fixing rotary members and the cleaning member being an integral unit separable from the apparatus, detection unit for detecting remaining quantity of the cleaning member, and a unit for requesting the exchange of the integral unit of the fixing rotary member pair and the cleaning member in response to the output of the detection unit.

Abstract: The present invention provides an image forming apparatus with a supply roller for supplying a sheet, a supply path for directing the sheet to an image forming section, a sheet ejecting path for the sheet on which an image is formed at the image forming section toward an ejecting section, a space integrally formed in a lower part of a body of the image forming apparatus, a branch path branched from the sheet ejecting path and adapted to direct the sheet toward the space, an introduction path for directing the sheet from the space to the supply path, and a sheet re-feeing unit removable with respect to the body of the image forming apparatus and including a sheet re-feeding path having an entrance facing the branch path and an exit facing the introduction path.

Abstract: The present invention relates to a temperature device for a heated rotary member. The device has a temperature detecting element, a supporting member for support it, and an electrically insulating tape for covering the support member and temperature detecting element. The insulating tape is wound in the direction along the rotating axial direction of the heated rotary member.

Abstract: A sheet conveyer having a sheet registration device for an image forming apparatus having a sheet path for guiding a sheet having an image recorded on one side thereof back to an image forming unit for recording another image on the other side, comprises a mechanism for switching the sheet having the image recorded on one side thereof back to the sheet path, a mechanism for abutting the switched-back sheet against a lateral registration reference plane, and a preliminary shift function shared by the switch-back mechanism for shifting the sheet oppositely to the reference plane.

Abstract: The present invention provides an image forming apparatus having a first image forming unit incorporating an image formation processing device therein, a sheet supply station for feeding a sheet to the first image forming unit, and a sheet ejecting station for ejecting the sheet on which an image is formed by the first image forming unit out of the image forming apparatus. Wherein a second image forming unit having the same function and size as those of the first image forming unit is mounted within the image forming apparatus and a sheet inlet of the second image forming unit is directly connected to the sheet ejecting station.

Abstract: This invention relates to an image forming apparatus having a convey path comprising lateral movement apparatus for controlling a widthwise position of a sheet member to be conveyed, wherein the lateral movement apparatus is curved in a convey direction.

Abstract: The present invention provides a scanning apparatus for scanning a photosensitive member with laser beams, comprising a scanning optical system having reflection members attached to a driving source and for generating two or more modulated laser beams simultaneously, first reflection members for reflecting the respective modulated laser beams to diverge the laser beams from each other, second reflection members arranged downstreamly of a light path with respect to the first reflection members and for reflecting the reflected laser beams on the photosensitive member, attachment means for fixing the scanning apparatus to a main apparatus and a molded structure for integrally supporting the scanning optical system, first reflection members, second reflection members and attachment means altogether.

Abstract: A sheet obliquely conveying apparatus is provided with a pair of sheet conveying rollers including a forwardly and reversely rotatable drive roller and a follower roller rotatable in contact with the drive roller, and bearing structure for rotatably supporting the shaft of the follower roller. The dimension of the bearing portion of the bearing structure which supports one end of the shaft of the follower roller is greater generally along the direction of conveyance of a sheet material than the dimension of the bearing portion of the bearing structure which supports the other end of the shaft of the follower roller. The apparatus is further provided with a resilient device generally parallel to the direction of conveyance of the sheet material for pressing the shaft of the follower roller.