A decoloring apparatus includes a sheet conveying unit, a scanner, a decoloring unit, and a controller. The decoloring unit decolors the image on the sheet conveyed through the sheet conveying unit. The decoloring unit is positioned downstream of the scanner in a sheet conveying direction. A distance along the sheet conveying direction between the scanner and the decoloring unit is shorter than a length of a first predetermined sheet size and longer than a length of a second predetermined sheet size. A controller determines whether the sheet conveyed by the sheet conveying unit is the first predetermined sheet size or the second predetermined sheet size. The controller performs a mode limiting process if the sheet size is determined to be the first predetermined sheet size.

Examples of a host device that includes an input recess are described. In some examples, the input recess includes a rotating port cover offset from a central axis of the input recess. In some examples, the input recess includes a plurality of contacts disposed on an interfacing surface of the input recess to interface with a print particle replenishment device when the rotating port cover is rotated. In some examples, the plurality of contacts interfaces with a control device to authenticate the print particle replenishment device.

A frame of an image forming apparatus includes a bottom plate provided at a bottom of the frame; first to third installing portions, provided at least three places of the bottom plate, for installing the image forming apparatus; a first recessed portion, where the first installing portion is provided, extended from the first installing portion toward an inside of the bottom plate in a planar direction of the bottom plate; a second recessed portion, where the second installing portion is provided, extended from the second installing portion toward the inside of the bottom plate in the planar direction of the bottom plate and connecting with the first recessed portion; a third recessed portion, where the third installing portion is provided, extended from the third installing portion toward the inside of the bottom plate in the planar direction of the bottom plate and connecting with the first recessed portion and the second recessed portion; and a reinforcing member, provided in a region where the first recessed portion, the second recessed portion and the third recessed portion connecting with each other, for reinforcing the bottom plate by being fastened at bottom plate portions sandwiched between respective recessed portions, the reinforcing member being smaller in area than the bottom plate.

An image forming apparatus includes an image bearing member, a developing member, a controller configured to carry out switching control between a first state in which the developing member is caused to act on the image bearing member and a second state in which the developing member is not caused to act on the image bearing member, a transfer member, and a detector configured to read density information of the recording material. The controller detects a fog density on the basis of a difference in density information between a fog non-occurrence region of a non-image region of the recording material in the second state and a fog occurable region of the non-image region of the recording material in the first state.

An image forming apparatus includes a stopper member supported either in a storage posture stored in a storage part by turning in an upstream side or a restriction posture to prevent falling down of a sheet from a sheet stacking face by turning in a downstream side. The storage part has a first recess and a second recess deeper than the first recess. The stopper member has a pressed part supported in the second recess movably upward and downward and a main part supported in the first recess in the storage posture. When the pressed part is pressed downward in the storage posture, the pressed part is moved downward and the main part comes into contact with a downstream side edge of the first recess, the stopper member is turned around the downstream side edge into the restriction posture through a protrusion posture protruding above the sheet stacking face.

A sheet post-processing apparatus includes a sheet introducing unit, a first sheet discharge unit, a second sheet discharge unit, a sheet processing unit, a sheet conveyance unit, and a control unit. The first and the second sheet discharge unit are configured to be able to discharge a sheet to an outside. The sheet conveyance unit includes a sheet conveyance path arranged between the first sheet discharge unit and the second sheet discharge unit. The control unit controls the sheet conveyance unit to convey the sheet along the sheet conveyance path toward the first sheet discharge unit to a predetermined position at which the sheet is not discharged from the first sheet discharge unit to the outside, then convey the sheet along the sheet conveyance path in an opposite direction toward the second sheet discharge unit, and discharge the sheet from the second sheet discharge unit.

Method and systems of automated document processing described herein include activating in sequence a plurality of illumination modules of an illumination source to illuminate a document, where the plurality of illumination modules are located at different positions relative to the document. The document can be imaged each time the document is illuminated by an illumination module to provide a plurality of images. A shadow profile of the document can be obtained based on the plurality of images. One or more of a boundary of the document and presence of a fastener attached to the document can be identified using the shadow profile. Any fasteners present may be removed using a robot arm.

An intermediate unit includes a transportation path along which a medium, on which printing has been performed by a printing unit that performs printing on the medium by using liquid, is transported to a post processing unit that performs post processing on the medium. The transportation path is provided with a drying unit that accelerates the drying of the medium. The drying unit is driven according to the printing data.

Provided is an image forming apparatus configured to appropriately determine that an abnormality has occurred in a component. The image forming apparatus includes: a charging device configured to charge a photosensitive drum; an exposure device configured to form an electrostatic latent image on the photosensitive drum charged by the charging device; a developing device including a carrying member configured to carry a toner and being configured to develop the electrostatic latent image using the toner to form a toner image; and a transfer portion configured to transfer the toner image onto a sheet. The image forming apparatus is configured to form a measurement image on the sheet, and to determine a unit that needs to be replaced based on a result of measuring the measurement image formed on the sheet. The measurement image includes a first measurement image and a second measurement image.

A printing apparatus includes a control unit configured to control a printing unit to start printing on sheets after confirming that a number of sheets used for printing does not exceed an upper limit number of sheets bindable by a first binding processing in a case where the first binding processing is specified and control the printing unit to start printing on sheets without confirming that a number of sheets used for printing does not exceed an upper limit number of sheets bindable by a second binding processing in a case where the second binding processing is specified.