An image forming apparatus includes a drum cartridge including a photosensitive drum, a movable optical print head including a light emitting element and a lens array, and a portion-to-be-contacted. The photosensitive drum and a light emergent surface of the lens array are spaced from each other to permit insertion of a cleaning member therebetween from outside of the main assembly. The portion-to-be-contacted is provided in the main assembly and configured to be contacted by the cleaning member to prevent further insertion of the cleaning member after the cleaning member cleans the light emergent surface by sliding on the light emergent surface from one end side toward the other end side of the light emergent surface with respect to a longitudinal direction of the lens array.

An image reading device includes a placing plate, a frame, a scanner, and a flat cable. The flat cable has a flat surface, has one end connected to a cable port provided in the scanner and the other end connected to the frame, and transmits/receives a signal to/from the scanner. The flat cable extends in the frame such that a width direction of the flat surface is along a direction perpendicular to a lower surface of the placing plate.

An image forming apparatus includes a drum cartridge including a photosensitive drum, a movable optical print head including a light emitting element and a lens array, and a portion-to-be-contacted. The photosensitive drum and a light emergent surface of the lens array are spaced from each other to permit insertion of a cleaning member therebetween from an outside of the main assembly. The portion-to-be-contacted provided in a main assembly and configured to be contacted by the cleaning member to prevent further insertion of said cleaning member after said cleaning member cleans said light emergent surface by sliding on the light emergent surface from one end side toward the other end side of the light emergent surface with respect to a longitudinal direction of said lens array.

An image reading device includes a loading plate, a frame, a scanner, a flat cable, and a holding member. The scanner includes a reading mechanism that extends in a main scanning direction and reciprocates in a sub-scanning direction on the side of a bottom surface opposite to an upper surface on which a document on the loading plate in the frame is loaded. The flat cable extends in the frame so that a width direction of the flat surface follows a direction orthogonal to the bottom surface of the loading plate. The holding member reciprocates together with the scanner and holds a part of the flat cable from the side on a main surface of the frame.

An image forming apparatus includes an apparatus body and a unit detachably mounted to the apparatus body and comprising a unit body, a cam, a first movement member, and a second movement member. The unit includes a first contact portion, an urging portion, and a second contact portion. The second movement member is attachable to the first movement member in a first manner or a second manner. A detection pattern of a detection signal differs between a state in which the second movement member is in contact with the first contact portion and a state in which the second movement member is in contact with the second contact portion, and differs between a state in which the second movement member is attached in the first manner and a state in which the second movement member is attached in the second manner.

A printing system capable of properly changing a content of a notification based on occurrence of a full state of a sheet in an output destination. A printing system which is able to output a sheet to any of a plurality of sheet stacking units includes a determining unit configured to determine whether a first setting for selecting a specific sheet stacking unit as an output destination of the sheet is performed or a second setting for automatically selecting any sheet stacking unit from among the plurality of sheet stacking units as the output destination is performed, a notification unit configured to perform a notification according to occurrence of a fully-stacked state in the output destination, and a control unit configured to change a content of the notification based on the determining by the determining unit.

An image formation apparatus according to one or more embodiments includes: an engagement part to which a replacement unit with a first communication part is detachably attachable; a second communication part configured, in a state where the replacement unit is attached to the engagement part, to communicate wirelessly with the first communication part of the replacement unit; and a control unit programmed to control the second communication part. In a process of causing the second communication part to communicate wirelessly with the first communication part a plurality of times, the control unit detects a change in a response from the first communication part.

An image reading device includes a loading plate, a frame, a scanner, a flat cable, and a holding member. The scanner includes a reading mechanism that extends in a main scanning direction and reciprocates in a sub-scanning direction on the side of a bottom surface opposite to an upper surface on which a document on the loading plate in the frame is loaded. The flat cable extends in the frame so that a width direction of the flat surface follows a direction orthogonal to the bottom surface of the loading plate. The holding member reciprocates together with the scanner and holds a part of the flat cable from the side on a main surface of the frame.

An image reading device includes a placing plate, a frame, a scanner, and a flat cable. The flat cable has a flat surface, has one end connected to a cable port provided in the scanner and the other end connected to the frame, and transmits/receives a signal to/from the scanner. The flat cable extends in the frame such that a width direction of the flat surface is along a direction perpendicular to a lower surface of the placing plate.

An information processing apparatus that transmits a print job to an image forming apparatus configured to start print processing upon receiving a print job even in a state where a post-processing device corresponding to post-processing designated in the print job is not mounted on a post-processing apparatus. The information processing apparatus is configured to receive information about the post-processing device from the image forming apparatus, transmit based on the received information the print job to the image forming apparatus when determining that the post-processing device corresponding to the post-processing designated in the print job is mounted on the post-processing apparatus, and not to transmit the print job to the image forming apparatus when determining that the post-processing device corresponding to the post-processing designated in the print job is not mounted on the post-processing apparatus.