Abstract: According to one embodiment, an image forming apparatus includes a cassette, a sensor and a controller. The cassette stacks a sheet. The sensor is provided at the rear end of the cassette. When the sensor detects the protrusion of the sheet from the cassette, the controller controls to notify that the sheet protrudes by using an alarm.

Abstract: According to one embodiment, a sheet stacker includes a stacking table, a pair of side walls, and a sensor. The stacking table is configured to stack a sheet. The pair of side walls is configured to move symmetrically with respect to a center position to regulate both sides of the sheet in a width direction. The sensor is configured to detect a relative position of the center position against the stacking table.

Abstract: An image forming apparatus includes an outer case which includes a first opening portion and a second opening portion provided just below the first opening portion, a withdrawable part which is received in the inside of the first opening portion so as to be withdrawn from the first opening portion in a horizontal direction, a cover which closes the second opening portion, a rotary shaft supports the cover so as to be rotatable from a first position where the cover closes the outer case to a second position where the cover opens the outer case, and a position adjusting mechanism which moves up the cover so as to be close to the withdrawable part at the first position and moves down the cover so as to be away from the withdrawable part at the second position.

Abstract: According to one embodiment, a paper feeding cassette includes a sheet storing section, side guides, and a sheet tray. The sheet storing section stores a sheet to be fed. The side guides move in the width direction orthogonal to a sheet feeding direction from the sheet storing section and regulate movement of a sheet end at least to one side in the width direction. The sheet tray lifts a downstream side end in the sheet feeding direction from the inside of the sheet storing section on the lower surface of the sheet stored in the sheet storing section. A through-hole including at least a passing area in the width direction of the side guides is provided in the sheet tray. At least a part of an edge that is present on the downstream side in the sheet feeding direction, faces the through-hole, and extends in the width direction moves closer to the sheet feeding direction as the part of the edge moves further away from the sheet center in the width direction to an end side.

Abstract: According to one embodiment, a sheet holding device including a guiding member that defines a sheet position in a sheet width direction which is perpendicular to a sheet movement direction, a rack gear that assists a movement in the sheet width direction of the guiding member, a pinion gear that assists the movement in the sheet width direction of the guiding member in cooperation with the rack gear, and a holder that supports the rack gear and the pinion gear movable in the sheet width direction in a state of maintaining a positional relation between the rack gear and the pinion gear, and provides an effect on a load applied to the guiding member from a direction which is perpendicular to each of the sheet movement direction and the sheet width direction.

Abstract: According to one embodiment, an image forming apparatus includes a cassette, a sensor and a controller. The cassette stacks a sheet. The sensor is provided at the rear end of the cassette. When the sensor detects the protrusion of the sheet from the cassette, the controller controls to notify that the sheet protrudes by using an alarm.

Abstract: In an image transferring apparatus of the invention, a relay unit, which is provided in a main body frame and includes a conveyance switching mechanism to eject a sheet on which an image is fixed by a fixing section to a sheet ejection section or to switch back the sheet in the middle of ejection, can be pulled out, and a automatic duplex unit to guide the switched back sheet to an image forming section is mounted to the main body frame to be capable of being detached. An intermediate unit to guide the sheet switched back by the relay unit, together with the fixing section, is fixed and placed in the main body frame. The intermediate unit is provided with a guide member to be capable of being opened and closed between a guide position for the switched back sheet and an open position opposite to the guide position.

Abstract: In an image transferring apparatus of the invention, a relay unit, which is provided in a main body frame and includes a conveyance switching mechanism to eject a sheet on which an image is fixed by a fixing section to a sheet ejection section or to switch back the sheet in the middle of ejection, can be pulled out, and a automatic duplex unit to guide the switched back sheet to an image forming section is mounted to the main body frame to be capable of being detached. An intermediate unit to guide the sheet switched back by the relay unit, together with the fixing section, is fixed and placed in the main body frame. The intermediate unit is provided with a guide member to be capable of being opened and closed between a guide position for the switched back sheet and an open position opposite to the guide position.

Abstract: A paper feeding apparatus includes a cassette main body that stacks a paper therein, a sidewall that moves in a width direction of the cassette main body, an end wall that moves in a longitudinal direction of the cassette main body, a first movable member that is connected at one end to the sidewall and rotates around a shaft axially fixed to the cassette main body in connection with the sidewall, a second movable member that is connected at one end to the end wall and rotates around a shaft axially fixed to the cassette main body in connection with the end wall, a first detection unit that has a plurality of detection members and detects the size of the paper in the width direction, and a second detection unit that has a plurality of detection members and detects the size of the paper in the longitudinal direction.

Abstract: According to one embodiment, a sheet stacker includes a stacking table, a pair of side walls, and a sensor. The stacking table is configured to stack a sheet. The pair of side walls is configured to move symmetrically with respect to a center position to regulate both sides of the sheet in a width direction. The sensor is configured to detect a relative position of the center position against the stacking table.

Abstract: A paper feeding apparatus includes a cassette main body that stacks a paper therein, a sidewall that moves in a width direction of the cassette main body, an end wall that moves in a longitudinal direction of the cassette main body, a first movable member that is connected at one end to the sidewall and rotates around a shaft axially fixed to the cassette main body in connection with the sidewall, a second movable member that is connected at one end to the end wall and rotates around a shaft axially fixed to the cassette main body in connection with the end wall, a first detection unit that has a plurality of detection members and detects the size of the paper in the width direction, and a second detection unit that has a plurality of detection members and detects the size of the paper in the longitudinal direction.

Abstract: A paper feeding apparatus includes a cassette main body that stacks a paper therein, a sidewall that moves in a width direction of the cassette main body, an end wall that moves in a longitudinal direction of the cassette main body, a first movable member that is connected at one end to the sidewall and rotates around a shaft axially fixed to the cassette main body in connection with the sidewall, a second movable member that is connected at one end to the end wall and rotates around a shaft axially fixed to the cassette main body in connection with the end wall, a first detection unit that has a plurality of detection members and detects the size of the paper in the width direction, and a second detection unit that has a plurality of detection members and detects the size of the paper in the longitudinal direction.

Abstract: A paper feeding apparatus includes a cassette main body that stacks a paper therein, a sidewall that moves in a width direction of the cassette main body, an end wall that moves in a longitudinal direction of the cassette main body, a first movable member that is connected at one end to the sidewall and rotates around a shaft axially fixed to the cassette main body in connection with the sidewall, a second movable member that is connected at one end to the end wall and rotates around a shaft axially fixed to the cassette main body in connection with the end wall, a first detection unit that has a plurality of detection members and detects the size of the paper in the width direction, and a second detection unit that has a plurality of detection members and detects the size of the paper in the longitudinal direction.

Abstract: An image forming apparatus includes an outer case which includes a first opening portion and a second opening portion provided just below the first opening portion, a withdrawable part which is received in the inside of the first opening portion so as to be withdrawn from the first opening portion in a horizontal direction, a cover which closes the second opening portion, a rotary shaft supports the cover so as to be rotatable from a first position where the cover closes the outer case to a second position where the cover opens the outer case, and a position adjusting mechanism which moves up the cover so as to be close to the withdrawable part at the first position and moves down the cover so as to be away from the withdrawable part at the second position.

Abstract: In an image transferring apparatus of the invention, a relay unit, which is provided in a main body frame and includes a conveyance switching mechanism to eject a sheet on which an image is fixed by a fixing section to a sheet ejection section or to switch back the sheet in the middle of ejection, can be pulled out, and a automatic duplex unit to guide the switched back sheet to an image forming section is mounted to the main body frame to be capable of being detached. An intermediate unit to guide the sheet switched back by the relay unit, together with the fixing section, is fixed and placed in the main body frame. The intermediate unit is provided with a guide member to be capable of being opened and closed between a guide position for the switched back sheet and an open position opposite to the guide position.

Abstract: A paper feeding apparatus includes a cassette main body that stacks a paper therein, a sidewall that moves in a width direction of the cassette main body, an end wall that moves in a longitudinal direction of the cassette main body, a first movable member that is connected at one end to the sidewall and rotates around a shaft axially fixed to the cassette main body in connection with the sidewall, a second movable member that is connected at one end to the end wall and rotates around a shaft axially fixed to the cassette main body in connection with the end wall, a first detection unit that has a plurality of detection members and detects the size of the paper in the width direction, and a second detection unit that has a plurality of detection members and detects the size of the paper in the longitudinal direction.