Abstract: An image forming apparatus includes an image bearing member for bearing a toner image, a transfer member for transferring the toner image from the image bearing member onto a sheet in contact with the image bearing member, and an openable unit including an openable member and a rotational shaft. In addition, a lock member locks the openable unit in a closed state by movement of the openable member, and a cam member, provided in the main assembly, rotatably moves the transfer member toward and away from the image bearing member. A force receiving portion, provided on the openable unit, receives a reaction force in contact with the cam member. The openable member includes the transfer member, and the cam member urges the force receiving portion when rotated to impart a force, for attracting the openable unit toward a locking direction by the lock member, to the openable member.

Abstract: An image forming apparatus includes an openable cover, including a rotational shaft, capable of opening and closing an opening by being rotated about the rotational shaft relative to a main assembly of the image forming apparatus; an image forming portion for forming a toner image on a sheet; an opposing member, provided in the image forming portion, opposing the openable cover when the openable cover closes the opening; a contact member, provided on the openable cover, contactable to the opposing member; an urging member, provided on the openable cover, for urging the contact member toward the opposing member; and a locking member for locking the openable cover in a closed state relative to the main assembly. The image forming apparatus comprising a cam member, provided in the image forming portion, for moving the contact member toward and away from the opposing member by rotation of the cam member.

Abstract: An image forming apparatus includes an image bearing member for bearing an electrostatic image; a rotatable supporting member swingably supporting the rotatable supporting member, the rotatable supporting member being provided with a first gear portion and being rotatable while carrying a plurality of developing devices for developing the electrostatic image with toner; a drive transmission device for transmitting a rotational force to the rotatable supporting member, the drive transmission device being provided with a second gear portion engaged with first gear portion at an engagement position; and an opposing portion provided opposed to the rotatable supporting member with a gap therebetween which is smaller than an amount of engagement between the first gear portion and the second gear portion.

Abstract: An image forming apparatus includes an openable cover capable of opening and closing an opening, an image forming portion for forming a toner image on a sheet, and a cam member provided in the image forming portion for moving a contact member toward and away from an opposing member. A controller controls the image forming portion and rotation of the cam member. The controller stops an operation of the image forming portion when a detecting unit detects opening of the openable cover, and then controls rotation of the cam member at least one full turn when the detecting unit detects closing of the openable cover.

Abstract: A toner image formed on an image bearing member is transferred onto a recording material so as to overflow from an edge portion of the recording material, thereby enabling the toner image to be formed so as to extend to the edge portion of the recording material. To suppress the deposition of the toner in the edge portion of the recording material, a cleaning member for cleaning the edge portion of the recording material obtained after the fixing is provided. In order to make a trailing edge of the recording material come into contact with the cleaning member, the recording material which has passed through a fixing apparatus is temporarily switched back, thereby allowing the trailing edge portion of the recording material to collide with the cleaning member.

Abstract: An image forming apparatus includes an image bearing member for bearing an electrostatic image; a rotatable supporting member swingably supporting the rotatable supporting member, the rotatable supporting member being provided with a first gear portion and being rotatable while carrying a plurality of developing devices for developing the electrostatic image with toner; a drive transmission device for transmitting a rotational force to the rotatable supporting member, the drive transmission device being provided with a second gear portion engaged with first gear portion at an engagement position; and an opposing portion provided opposed to the rotatable supporting member with a gap therebetween which is smaller than an amount of engagement between the first gear portion and the second gear portion.

Abstract: An image forming apparatus includes an openable cover, including a rotational shaft, capable of opening and closing an opening by being rotated about the rotational shaft relative to a main assembly of the image forming apparatus; an image forming portion for forming a toner image on a sheet; an opposing member, provided in the image forming portion, opposing the openable cover when the openable cover closes the opening; a contact member, provided on the openable cover, contactable to the opposing member; an urging member, provided on the openable cover, for urging the contact member toward the opposing member; and a locking member for locking the openable cover in a closed state relative to the main assembly. The image forming apparatus comprising a cam member, provided in the image forming portion, for moving the contact member toward and away from the opposing member by rotation of the cam member.

Abstract: A compact image forming apparatus is provided in which stains on the back of a transfer material can be prevented. In particular, in a marginless print mode in which a toner image can be formed to the edge of a transfer material, a large amount of toner adheres to a transfer-material bearing member. The image forming apparatus includes a collecting member that can temporarily collect the toner adhering to the transfer-material bearing member. The toner that is temporarily collected by the collecting member is transferred to an intermediate transfer member and is cleaned by a cleaning unit.

Abstract: Provided is an image forming apparatus in which the image forming apparatus has a marginless mode in which the toner image is formed on said image bearing member in an area that covers the recording material and an area outside the recording material, and the toner image is transferred to extend beyond an edge of the recording material carried by said recording material carrying member, the image forming apparatus further including: a detecting device which detects the toner image that extends beyond the edge of the recording material and is transferred to said recording material carrying member in the marginless mode; and a control device which uses a detection result provided by said detecting device to control where said exposure device forms a latent image on said image bearing member.

Abstract: A compact image forming apparatus is provided in which stains on the back of a transfer material can be prevented. In particular, in a marginless print mode in which a toner image can be formed to the edge of a transfer material, a large amount of toner adheres to a transfer-material bearing member. The image forming apparatus includes a collecting member that can temporarily collect the toner adhering to the transfer-material bearing member. The toner that is temporarily collected by the collecting member is transferred to an intermediate transfer member and is cleaned by a cleaning unit.

Abstract: Provided is an image forming apparatus in which the image forming apparatus has a marginless mode in which the toner image is formed on said image bearing member in an area that covers the recording material and an area outside the recording material, and the toner image is transferred to extend beyond an edge of the recording material carried by said recording material carrying member, the image forming apparatus further including: a detecting device which detects the toner image that extends beyond the edge of the recording material and is transferred to said recording material carrying member in the marginless mode; and a control device which uses a detection result provided by said detecting device to control where said exposure device forms a latent image on said image bearing member.

Abstract: A toner image formed on an image bearing member is transferred onto a recording material so as to overflow from an edge portion of the recording material, thereby enabling the toner image to be formed so as to extend to the edge portion of the recording material. To suppress the deposition of the toner in the edge portion of the recording material, a cleaning member for cleaning the edge portion of the recording material obtained after the fixing is provided. In order to make a trailing edge of the recording material come into contact with the cleaning member, the recording material which has passed through a fixing apparatus is temporarily switched back, thereby allowing the trailing edge portion of the recording material to collide with the cleaning member.

Abstract: A main body of an image forming apparatus has an image forming section to which a sheet is fed from an optional sheet deck when it is coupled to the main body. The sheet fed from the sheet feeding device is received and then forwarded to the image forming section by a sheet conveyor unit which is demountably provided in the main body of the image forming apparatus and is formed of a frame, a pair of conveying rollers within the frame, and a guide.

Abstract: A main body of an image forming apparatus has an image forming section to which a sheet is fed from an optional sheet deck when it is coupled to the main body. The sheet fed from the sheet feeding device is received and then forwarded to the image forming section by a sheet conveyor unit which is demountably provided in the main body of the image forming apparatus and is formed of a frame, a pair of conveying rollers within the frame, and a guide.

Abstract: The present invention provides a sheet supplying apparatus comprising a sheet supporting means for supporting a sheet, a sheet supply means supported to contact with and separate from the sheet supported by the sheet supporting means and adapted to feed out the sheet by contacting with the sheet, a first biasing means for biasing the sheet supporting means toward the sheet supply means, and a second biasing means for biasing the sheet supply means toward the sheet supported by the sheet supporting means.

Abstract: A recording apparatus for recording an image on a recording medium by scanning a recording head, includes a scan unit for scanning the recording head by changing the scan speed of the recording head, and a control unit for controlling the scan unit to change the scan speed of the recording head according to the resolution of image data to be recorded by the recording head so as to perform recording. A recording controller for controlling the recording apparatus is also disclosed.

Abstract: A facsimile apparatus performs head recovery processing for recovering the state of ink discharge of a plurality of ink heads for different colors. Mode determining circuitry determines a receiving mode and control circuitry controls the head recovery processing according to a receiving mode determined by the mode determining circuitry.

Abstract: An output apparatus comprises a recording sheet conveying section having two feeder portions; a reader section for reading information which has been outputted onto a recording sheet; and an output section for outputting information onto a recording sheet. The apparatus determines whether a sheet set in a feeder portion is a print sheet or an original document, and performs reading and/or recording in accordance with the determination and/or an application being executed. The apparatus further has a memory for storing information which has been outputted onto a sheet and a comparator for comparing the information stored in the memory with the information read from the sheet by the reading section. Based on the comparison, the apparatus determines a proper manner (i.e., proper output position and orientation of the data) to output information onto the other side of the sheet, and also selects information to be outputted.

Abstract: This invention relates to a resupplying apparatus detachably attached to an image forming apparatus body which comprise a resupplying passage connecting a sheet material passage on a downstream side of an image forming means in the image forming apparatus body with another sheet material passage on an upstream side of the image forming means. Also, the resupplying apparatus comprises switchback conveying means placed in the resupplying passage for reversing the conveyance direction of the sheet material upon reception of the sheet material from a conveyer in the image forming apparatus body, said switchback conveying means at least partially assembled in the image forming apparatus body; and resupplying means for returning the sheet material to the upstream side of the image forming means through the resupplying passage.

Abstract: The invention aims at providing a notebook type personal computer having an improved portability. In order to achieve this object, a battery, case which houses a battery B for supplying a power to a personal computer body is detachably attached to a housing. The battery case has such a shape that it also serves as a palm rest used when a keyboard is operated. The battery case has a battery case body for housing the battery B, and an attaching/detaching portion connected to the battery case body and attached to and detached from the housing. The battery case body is connected to the attaching/detaching portion to be pivotal in a direction of thickness of the housing.