Abstract: An image forming apparatus includes: a fixing portion for fixing an image formed on a recording material; and a guide member for guiding the recording material. The guide member is provided at an entrance to the fixing portion and at an end portion with respect to a direction perpendicular to a feeding direction of the recording material The guide member is moved when the guide member is pushed by the recording material.

Abstract: An image forming apparatus includes: a fixing portion for fixing an image formed on a recording material; and a guide member for guiding the recording material. The guide member is provided at an entrance to the fixing portion and at an end portion with respect to a direction perpendicular to a feeding direction of the recording material The guide member is moved when the guide member is pushed by the recording material.

Abstract: An image forming apparatus includes: a transfer portion for transferring an image onto a sheet at a transfer nip; a fixing portion for fixing the image on the sheet at a fixing nip; a sheet feeding guide, provided between the transfer portion and the fixing portion, having a sheet guide surface; a sheet detecting portion provided between the transfer portion and the fixing portion; and a controller for controlling a sheet feeding speed of at least one of the transfer portion and the fixing portion depending on an output of the sheet detecting portion so that a feeding attitude of the sheet sandwiched at both of the transfer nip and the fixing nip is maintained in a predetermined feeding attitude. The sheet guide surface of the sheet feeding guide has a most recessed region in a region between the transfer portion and the sheet detecting portion.

Abstract: An image forming apparatus includes a drive source configured to drive a member for forming an image on a recording material, a frame of the image forming apparatus including a planar portion on which the drive source is mounted, wherein a plurality of through holes is formed on the entire planar portion of the frame, and a sheet member configured to cover at least a portion of the plurality of through holes.

Abstract: [Problem] To attain weight saving or the like of a light source unit. [Means for Solving the Problem] The present invention includes a light source portion 10 and a socket portion 11. The socket portion 11 is an integrated structural part which is composed of an insulation member 7, a thermo conductive resin member 8, and electric power feeding members 91 to 93. As a result, according to the present invention, the thermo conductive resin member 8 is used as a heat radiation member to radiate to the outside a heat which is generated at the light source portion 10 and thus it is possible to save the weight of the light source unit 1, save manufacturing costs, and improve durability of a die in comparison with that of a conventional die cast.

Abstract: An electrophotographic image forming apparatus includes a main assembly and a cartridge including a process device actable on an electrophotographic photosensitive member. The process cartridge is detachably mountable relative to the main assembly, with the cartridge including a first unit and a second unit pivotably connected with the first unit. An opening is provided in the main assembly of the apparatus for permitting mounting and demounting of the cartridge. An openable member is provided in the main assembly of the apparatus for openably closing the opening. An exposure device is provided on the openable member for exposing the electrophotographic photosensitive member. A first positioning portion is provided in the main assembly. The exposure device is provided with a second positioning portion for positioning between the exposure device and the second unit of the cartridge by engagement with the cartridge by closing the openable member.

Abstract: An image forming apparatus includes: a transfer portion for transferring an image onto a sheet at a transfer nip; a fixing portion for fixing the image on the sheet at a fixing nip; a sheet feeding guide, provided between the transfer portion and the fixing portion, having a sheet guide surface; a sheet detecting portion provided between the transfer portion and the fixing portion; and a controller for controlling a sheet feeding speed of at least one of the transfer portion and the fixing portion depending on an output of the sheet detecting portion so that a feeding attitude of the sheet sandwiched at both of the transfer nip and the fixing nip is maintained in a predetermined feeding attitude. The sheet guide surface of the sheet feeding guide has a most recessed region in a region between the transfer portion and the sheet detecting portion.

Abstract: An image forming apparatus includes: a fixing portion for fixing an image formed on a recording material; and a guide member for guiding the recording material. The guide member is provided at an entrance to the fixing portion and at an end portion with respect to a direction perpendicular to a feeding direction of the recording material The guide member is moved when the guide member is pushed by the recording material.

Abstract: An image forming apparatus includes a cover member which is openable and closable with respect to main assembly of the image forming apparatus; and an image reading portion, movable to first and second positions, for reading an image of an original. The cover member is movable to first and second open positions with respect to the main assembly. The image reading portion is initially rested at the first position as the cover member is moved from a closed position to the first open positions, and then is movable from the first position to the second position in interrelation with movement of the cover member from the first open position toward the second open position.

Abstract: A color image forming apparatus to which cartridges are detachably mountable includes a cartridge supporting member movable between a set position and an outside position; a driving source; a driving member provided opposite to the driving source through the cartridge supporting member, a first driving force transmission member for transmitting a driving force of the driving source; a second driving force transmission member provided oppositely to the first driving force transmission member through the cartridge supporting member; and a third driving force transmission member provided to the cartridge supporting member. The third driving force transmission member is, in a state in which the cartridge supporting member is located at the set position, connected to the first and second driving force transmission members to transmit the driving force of the driving source to the driving member.

Abstract: An image forming apparatus includes a cover member which is openable and closable with respect to main assembly of the image forming apparatus; and an image reading portion, movable to a first position and a second position which is retracted from an image forming portion more than the first position, for reading an image of an original. The cover member is movable to a first open position in which the cover member is open with respect to the main assembly and to a second open position in which the cover member is further open with respect to the main assembly. The image reading portion is movable from the first position to the second position in interrelation with movement of the cover member from a closed position, in which the cover member is closed with respect to the main assembly, toward the second open position, and is movable from the second position to the first position in interrelation with movement of the cover member from the second open position toward the closed position.

Abstract: An electrophotographic image forming apparatus includes a main assembly; a cartridge including process means actable on an electrophotographic photosensitive member, the process cartridge being detachably mountable relative to the main assembly; an opening, provided in the main assembly of the apparatus, for permitting mounting and demounting of the cartridge; an openable member, provided in the main assembly of the apparatus, for openably closing the opening; an exposure device, provided on the openable member, for exposing the electrophotographic photosensitive member; the cartridge including a first unit, and a second unit pivotably connected with the first unit; a first positioning portion provided in the main assembly of the apparatus, wherein the exposure device is provided with a second positioning portion for positioning between the exposure device and the second unit of the cartridge by engagement with the cartridge by closing the openable member.

Abstract: A color image forming apparatus to which cartridges are detachably mountable includes a cartridge supporting member movable between a set position and an outside position; a driving source; a driving member provided opposite to the driving source through the cartridge supporting member, a first driving force transmission member for transmitting a driving force of the driving source; a second driving force transmission member provided oppositely to the first driving force transmission member through the cartridge supporting member; and a third driving force transmission member provided to the cartridge supporting member. The third driving force transmission member is, in a state in which the cartridge supporting member is located at the set position, connected to the first and second driving force transmission members to transmit the driving force of the driving source to the driving member.