A turnable sheet stopper blocks and passes a sheet conveyed on a sheet guide, and includes a proximal portion, a distal portion connected to the end of the proximal portion, and a folding mechanism that connects the distal portion to the proximal portion. The sheet stopper transitions between first and second positions. In the second position, the proximal and distal portions integrally turn to the downstream side in the sheet conveyance direction to allow the sheet to pass. The sheet stopper transitions from the second position to a third position when a user draws out the sheet from an upstream side. In the third position, the distal portion folds toward the upstream side to allow the sheet to be drawn out. During transition from the second position to the third position, the edge of the distal portion is located on or away from an outer surface of the sheet guide.

According to one embodiment, an image processing apparatus includes an apparatus main body, a first rotating body, a second rotating body, and a connection member. The first rotating body is configured to be openable and closeable and provided in the apparatus main body. The second rotating body is provided in the first rotating body. The second rotating body is configured to be openable and closable from the first rotating body in the same direction as that of the first rotating body. The connection member is linear. The connection member is configured to connect the apparatus main body and the second rotating body to each other and to restrict a rotation angle of the second rotating body.

An image forming apparatus includes an image forming unit that forms an image on a recording medium and an image forming apparatus body in which the image forming unit is provided, and on which a first manual feeding tray and a second manual feeding tray having a configuration different from the first manual feeding tray are selectively mountable at a same mounting position.

A sheet feeding apparatus includes an apparatus body including an abutting portion, an opening/closing member, a stacking member, a feeding member, a conveyance unit including a separation portion, and a guide configured to guide a leading edge of the sheet conveyed by the feeding member from the stacking member toward the separation portion. The guide includes a supported portion supported pivotably by the apparatus body and an abutted portion configured to be abutted against the abutting portion. The guide is configured to move in interrelation with an operation of closing the opening/closing member and to be positioned inside the apparatus body with respect to the opening/closing member in the closed state of the opening/closing member. In the opened state of the opening/closing member, the guide is configured to be restricted from pivoting by the abutted portion being abutted against the abutting portion.

The image forming apparatus includes a side panel and a manual feed tray that is rotatable and installed on the side panel. The side panel includes an opening portion through which a sheet placed on the manual feed tray passes when the sheet is fed into the image forming apparatus. The manual feed tray includes an end cursor that is movable, and a guide portion that guides movement of the end cursor in a direction perpendicular to a rotational center of the manual feed tray. The opening portion is sized to accommodate the end cursor. When the opening/closing angle of the manual feed tray with respect to a horizontal direction exceeds a predetermined angle, the end cursor moves along the guide portion by gravity to a position where the end cursor can be accommodated in the opening portion.

An image forming apparatus includes an attachable/detachable storage unit having a positioned portion projecting downstream in an attachment direction of the storage unit, a conveyance member, an image forming unit to form an image on a sheet conveyed by the conveyance member, and a conveyance unit to move between a first position and a second position. Engagement of the positioned portion with a positioning portion of the image forming apparatus causes the storage unit to be positioned with respect to the image forming apparatus. The conveyance unit includes a contact portion and a depressed portion. In a case where the contact portion of the conveyance unit comes into contact with the storage unit and the conveyance unit is moved from the second position to the first position by the storage unit, the positioned portion does not come into contact with the depressed portion of the conveyance unit.

An image forming apparatus includes: a first opening/closing member that can move between a first opening position in which the first opening/closing member opens an inside of a body of the image forming apparatus, and a first closing position in which the first opening/closing member closes the inside of the body of the image forming apparatus; a second opening/closing member that can move around a rotation shaft and between a second closing position in which the second opening/closing member closes an opening formed in the first opening/closing member, and a second opening position in which the second opening/closing member opens the opening, the second opening/closing member being removably attached to the body of the image forming apparatus; and a supported portion that is provided in the first opening/closing member so as to be supported on a support portion of the second opening/closing member, as defined herein.

An image forming apparatus is provided. The image forming apparatus for selectively feeding printing media to an image former of a main body through a cassette and a multipurpose tray includes a tray feeder configured to feed printing media placed in the multipurpose tray, a cassette feeder configured to feed printing media placed in the cassette, a power train configured to transmit power generated from a driving motor, and a power switching unit configured to transmit power transmitted to the power train to the tray feeder or the cassette feeder as the multipurpose tray is moved to a use position or a non-use position.

Even in a case where a master-CPU of an image forming section and a slave-CPU of a sheet transportation section are driven by respective oscillation circuits with different oscillation accuracies, a large difference in accuracy is not caused in transfer sheet transportation speed driven by clock signals formed by the respective oscillation circuits. In the master-CPU and the slave-CPU that are cascadingly connected to each other, in order to calculate a clock frequency of an oscillation circuit of the target-CPU, a predetermined time transmitted from the other CPU connected to the target-CPU is counted by the clock signal of the target-CPU. With reference to the predetermined time, an operating process, such as division of an acquired counter value by the predetermined time, acquires an error of the clock frequency of the oscillation circuit driving the slave-CPU, and corrects the error, thereby improving the accuracy thereof.

An automatic document feeder, which is included in an image reading device and an image forming apparatus, includes first and second document trays, a document output tray, a document conveying passage, multiple document conveying bodies, a drive source, a detector, and a controller. The multiple document conveying bodies include a document holding and conveying body to convey and hold the original document sheet on the second document tray. On detection of the original document sheet on the second document tray while conveying a different original document sheet from the first document tray, the controller stops feeding the different original document sheet, causes the different original document sheet downstream from the document holding and conveying body in a document conveying direction to be conveyed to the document output tray, and stops the drive source after the different original document has been conveyed to the document output tray.