The image forming apparatus forms a test chart on an image bearing member, the test chart including a plurality of test images including a first test image of a first density and a second test image formed at a position different from a position of the first test image in a conveying direction of a recording medium, the second test image having a second density different from the first density. The image forming apparatus transfers the test chart to the recording medium with a transfer roller and controls the rotation velocity of the transfer roller when the recording medium passes through a transfer portion based on a result of reading the test chart on the recording medium with a reading unit.

The image forming apparatus forms a test chart on an image bearing member, the test chart including a plurality of test images including a first test image of a first density and a second test image formed at a position different from a position of the first test image in a conveying direction of a recording medium, the second test image having a second density different from the first density. The image forming apparatus transfers the test chart to the recording medium with a transfer roller and controls the rotation velocity of the transfer roller when the recording medium passes through a transfer portion based on a result of reading the test chart on the recording medium with a reading unit.

A printing device comprises a housing, a communication interface configured to communicate with a server, and a controller. The printing device is configured to operate either in a contract mode or in a normal mode. The housing is configured such that one or more consumables including a first type consumable and a second type consumable are attachable. The first type consumable is dedicated for the contract printing, and the second type consumable is usable for printing in both the contract mode and the normal mode. The controller is configured to activate the contract mode in response to an activation instruction from the server. In a case where the second type consumable is attached to the housing when the contract mode is activated, the controller changes a state of the printing device to a contract printing state in which the contract printing is activated after activating the contract mode.

An image-forming apparatus includes a rotatable developer-bearing member to bear a developer composed of a toner particle and a transfer promoting particle attached to the toner particle. When F denotes pressing force for pressing the developer-bearing member against an image-bearing member, and N denotes a total number of the transfer promoting particles interposed between the toner particle and the image-bearing member, adhesion strength Ft between the transfer promoting particle and the toner particle measured by pressing the transfer promoting particle against the toner particle at a pressing force per unit transfer promoting particle F/N and adhesion strength Fdr between the transfer promoting particle and the image-bearing member measured by pressing the transfer promoting particle against the image-bearing member at the pressing force per unit transfer promoting particle F/N, satisfy Ft<Fdr. Electrical discharge is generated upstream of a transfer portion in a movement direction of an intermediate transfer belt.

An assembly for an image forming device includes an access door movable between an open position permitting replacement of a replaceable unit and a closed position. An electrical connector in the image forming device is movable between a retracted position and an extended position. In the retracted position the electrical connector is disengaged from a corresponding electrical connector of the replaceable unit when the replaceable unit is installed in the image forming device. In the extended position the electrical connector is engaged with the corresponding electrical connector of the replaceable unit. The electrical connector is operatively connected to the access door such that movement of the access door from the closed to the open position moves the electrical connector from the extended to the retracted position and movement of the access door from the open to the closed position moves the electrical connector from the retracted to the extended position.

An image forming apparatus includes a first moving member moving between a first position which is a position not in contact with a recording material and a second position which is a position in contact with the recording material, and a second moving member positioned in a third position in a state where an attachable/detachable unit is not attached to an apparatus main body and in a fourth position in a state where the attachable/detachable unit is attached to the apparatus main body. An optical sensor includes a light-emitting portion and a light-receiving portion, and a flag member moves between a transmission position and a light-shielding position and moves in conjunction with movement of the first moving member from the first position to the second position and with a movement of the second moving member from the third position to the fourth position.

An information processing apparatus that makes it possible to obtain a result of prediction of a consumption degree (remaining amount) of a consumable at a desired timing. The information processing apparatus is capable of communicating with an image forming apparatus that forms an image using toner supplied from a toner container mounted thereon. A reception unit receives first information on a consumption amount of the toner by the image forming apparatus. A controller acquires date information on a designated date, and determines second information on a consumption amount of the toner by the designated date, based on the first information in an amount corresponding to a predetermined number of days before a certain day before the designated date.

In a printing system capable of supplying a sheet of a job having undergone print processing by the printing unit of a printing apparatus to a post-processing unit capable of executing at least a specific type of post-processing among a plurality of types of post-processes, when the target job requires the specific type of post-processing, the printing apparatus is inhibited from executing print processing of the job without explicitly determining a sheet necessary for the print processing of the job by a user using a user interface unit. When the target job does not require the specific type of post-processing, the printing apparatus is permitted to execute print processing of the job without explicitly determining a sheet necessary for the print processing of the job by the user using the user interface unit.

A sheet binding processing apparatus includes a conveying portion, a conveying path for sheets, a stacking portion on which sheets from the conveying path are stacked, a first regulating portion for regulating a sheet bundle on the stacking portion in a crossing direction, a second regulating portion for regulating a sheet bundle in the conveying direction, a manual setting portion for setting sheets from an outside of the apparatus, and a binding device which binds a sheet bundle by a staple and moves in the crossing direction. An angular posture of the binding device located at a third position is different from an angular posture located at a first position. An angular posture of the binding device located at the third position is different from an angular posture located at a second position. The second position is located at a second side of the first position.

An image forming apparatus includes an image forming unit configured to form an image on a sheet based on a mode selected from a plurality of modes having different image forming speeds; a memory configured to store first data for a first mode included in the plurality of modes, the first data indicating a correspondence for the first mode between a type of the sheet and the image forming speed, and second data for a second mode included in the plurality of modes, the second data indicating a correspondence for the second mode between a type of the sheet and the image forming speed; a display; and a controller configured to: determine a first image forming speed for the first mode from the first data based on the type of the sheet; and determine a second image forming speed for the second mode from the second data.