Abstract: An image evaluation system includes an image forming apparatus and an information processing apparatus. The image forming apparatus prints a reference document including pattern images. The image forming apparatus prints, on the reference document, a check region including check items with respect to the image quality of the printed result. The image forming apparatus reads the printed reference document to generate reference document data. The image forming apparatus transmits the generated reference document data to the information processing apparatus. Based on the received reference document data, the information processing apparatus recognizes a check item selected in the check region.

Abstract: An image forming apparatus includes a toner container, a toner conveyance portion, a container attachment portion, and a biasing mechanism. The toner container has a toner outflow port at a tip portion thereof. The toner conveyance portion is provided in the toner container and conveys toner in the toner container toward the toner outflow port. The container attachment portion supports the toner container. The biasing mechanism applies a biasing force to change the toner container from a horizontal attitude to an inclined attitude in accordance with a toner conveyance operation of the toner conveyance portion. When the toner container is in the inclined attitude, the toner outflow port faces diagonally downward.

Abstract: An image evaluation system includes an image forming apparatus and an information processing apparatus. The image forming apparatus prints a reference document including pattern images. The image forming apparatus prints, on the reference document, a check region including check items with respect to the image quality of the printed result. The image forming apparatus reads the printed reference document to generate reference document data. The image forming apparatus transmits the generated reference document data to the information processing apparatus. Based on the received reference document data, the information processing apparatus recognizes a check item selected in the check region.

Abstract: An image forming apparatus includes a toner container, a toner conveyance portion, a container attachment portion, and a biasing mechanism. The toner container has a toner outflow port at a tip portion thereof. The toner conveyance portion is provided in the toner container and conveys toner in the toner container toward the toner outflow port. The container attachment portion supports the toner container. The biasing mechanism applies a biasing force to change the toner container from a horizontal attitude to an inclined attitude in accordance with a toner conveyance operation of the toner conveyance portion. When the toner container is in the inclined attitude, the toner outflow port faces diagonally downward.

Abstract: An image forming apparatus includes an apparatus body, an image carrier, a developing device, a toner container, a container cover, a driver and a lock mechanism. The lock mechanism maintains the locking state if the container body is rotated in the first rotating direction by the driver, and receives a rotational drive force of the driver to switch the state thereof from the locking state to the unlocking state if the container body is rotated in the second rotating direction by the driver.

Abstract: An image forming apparatus includes an apparatus body, an image carrier, a developing device, a toner container, a container cover, a driver and a lock mechanism. The lock mechanism maintains the locking state if the container body is rotated in the first rotating direction by the driver, and receives a rotational drive force of the driver to switch the state thereof from the locking state to the unlocking state if the container body is rotated in the second rotating direction by the driver.

Abstract: An image forming apparatus includes a photosensitive drum, a development section, and a cooling unit. An electrostatic latent image is formed on the photosensitive drum. The development section supplies toner to the electrostatic latent image to form a toner image. The cooling unit cools the development section. The cooling unit includes a heat receiving section, a heat radiating section, and a cooling tube. The heat receiving section receives heat from the development section. The heat radiating section radiates the heat received by the heat receiving section. The cooling tube returns a liquid coolant sent from the heat radiating section to the heat radiating section by way of the heat receiving section. The heat receiving section has a groove structure into which the cooling tube is fitted.

Abstract: An image forming apparatus includes a photosensitive drum, a development section, and a cooling unit. An electrostatic latent image is formed on the photosensitive drum. The development section supplies toner to the electrostatic latent image to form a toner image. The cooling unit cools the development section. The cooling unit includes a heat receiving section, a heat radiating section, and a cooling tube. The heat receiving section receives heat from the development section. The heat radiating section radiates the heat received by the heat receiving section. The cooling tube returns a liquid coolant sent from the heat radiating section to the heat radiating section by way of the heat receiving section. The heat receiving section has a groove structure into which the cooling tube is fitted.

Abstract: A toner container is for mounting to a mounting portion of an image forming apparatus along a mounting direction. The toner container includes a container body and an engaging protrusion. The container body houses a toner and rotates. The engaging protrusion projects from an outer peripheral surface of the container body. The engaging protrusion has a spiral pattern and rotates integrally with the container body. The mounting portion includes a lock portion is engageable with the engaging protrusion. Rotation of the container body and the engaging protrusion in one rotation direction in a state where removal of the toner container from the mounting portion is permitted causes the toner container to move to a back side (downstream) in the mounting direction while shifting an engaging part of the engaging protrusion relative to the lock portion to restrict the removal of the toner container from the mounting portion.

Abstract: A toner container is for mounting to a mounting portion of an image forming apparatus along a mounting direction. The toner container includes a container body and an engaging protrusion. The container body houses a toner and rotates. The engaging protrusion projects from an outer peripheral surface of the container body. The engaging protrusion has a spiral pattern and rotates integrally with the container body. The mounting portion includes a lock portion is engageable with the engaging protrusion. Rotation of the container body and the engaging protrusion in one rotation direction in a state where removal of the toner container from the mounting portion is permitted causes the toner container to move to a back side in the mounting direction while shifting an engaging part of the engaging protrusion relative to the lock portion to restrict the removal of the toner container from the mounting portion.

Abstract: A developing device includes a developer carrier, a thickness restricting portion, and an airflow rotor. The developer carrier rotates while carrying a developer on an outer circumferential surface thereof. The thickness restricting portion is disposed spaced apart from the developer carrier, and restricts the thickness of the two-component developer carried by the developer carrier. The airflow rotor is a rotor that rotates in a direction opposite to a rotation direction of the developer carrier, at a position spaced apart from an upper surface of the thickness restricting portion and from the outer circumferential surface of the developer carrier. The airflow rotor generates airflow in a space between the airflow rotor and the upper surface of the thickness restricting portion.

Abstract: A developing device includes a developer carrier, a thickness restricting portion, and an airflow rotor. The developer carrier rotates while carrying a developer on an outer circumferential surface thereof. The thickness restricting portion is disposed spaced apart from the developer carrier, and restricts the thickness of the two-component developer carried by the developer carrier. The airflow rotor is a rotor that rotates in a direction opposite to a rotation direction of the developer carrier, at a position spaced apart from an upper surface of the thickness restricting portion and from the outer circumferential surface of the developer carrier. The airflow rotor generates airflow in a space between the airflow rotor and the upper surface of the thickness restricting portion.

Abstract: An image forming apparatus includes a job execution portion, an operation portion, and a storage portion. The job execution portion executes a job. The operation portion receives an operation of selecting a setting item used in a job to be executed, an operation of setting a setting value of a job to be executed, and an execution instruction for a job. The storage portion stores a content of a specific operation of making the operation portion into a state where a plurality of touch operations have been performed by one touch operation. The job execution portion makes a job execution speed different between a job for which the specific operation has been performed on the operation portion during setting operation, and a job set by only a normal operation without the specific operation during setting operation on the operation portion.

Abstract: An image forming apparatus (multifunction peripheral) includes an input portion and a job execution portion. The input portion includes an operation portion configured to accept user's setting input and stop of a job, and a communication portion, so as to accept a content confirmation input of a job to be executed. When executing a job for which the content confirmation input is not accepted, the job execution portion executes the job at lower speed for a predetermined number of sheets from first than a job for which the content confirmation input is accepted, and executes the job at the same speed after the predetermined number of sheets as the job for which the content confirmation input is accepted.

Abstract: An image forming apparatus includes an image forming section, a housing, an image scanning section, an airflow generation section, a guiding air path, and a blow-off port. The image forming section forms an image on a sheet. The housing accommodates the image forming section therein. The image scanning section has a bottom portion and is disposed above the housing. The airflow generation section generates an airflow inside the housing. The guiding air path guides the airflow upward inside the housing. The blow-off port is communicated with the guiding air path and arranged so as to face the bottom portion of the image scanning section.

Abstract: A developing device includes a developer container, an agitation conveyance member, a toner detection sensor, and a scraper. Agitation conveyance member agitates and conveys a developer in developer container. Toner detection sensor detects a toner concentration or a remaining amount of toner in developer container. Scraper is provided in agitation conveyance member, and cleans a detection surface of toner detection sensor when agitation conveyance member rotates. Scraper includes a first member that comes into contact with detection surface of toner detection sensor when agitation conveyance member rotates forward, and a second member that comes into contact with detection surface of toner detection sensor when agitation conveyance member rotates reversely. First member has a wear resistance higher than that of second member, and a coefficient of friction between second member and detection surface is higher than a coefficient of friction between first member and detection surface.

Abstract: An image forming apparatus has a printing section and a document reading section. The printing section prints on paper while transporting it. The document reading section includes a document transport portion which automatically transports, sheet by sheet, a document placed thereon. The document reading section generates image data by reading the document. The document reading section is operable in an ordinary reading mode in which it reads the document at a previously determined ordinary speed and in a quiet reading mode in which it reads the document at a quiet speed lower than the ordinary speed. The document reading section reads the document in the quiet reading mode when the printing section is not printing and in the ordinary reading mode when the printing section is printing.

Abstract: An image forming apparatus has a printing section and a document reading section. The printing section prints on paper while transporting it. The document reading section includes a document transport portion which automatically transports, sheet by sheet, a document placed thereon. The document reading section generates image data by reading the document. The document reading section is operable in an ordinary reading mode in which it reads the document at a previously determined ordinary speed and in a quiet reading mode in which it reads the document at a quiet speed lower than the ordinary speed. The document reading section reads the document in the quiet reading mode when the printing section is not printing and in the ordinary reading mode when the printing section is printing.

Abstract: An image forming apparatus includes a job execution portion, an operation portion, and a storage portion. The job execution portion executes a job. The operation portion receives an operation of selecting a setting item used in a job to be executed, an operation of setting a setting value of a job to be executed, and an execution instruction for a job. The storage portion stores a content of a specific operation of making the operation portion into a state where a plurality of touch operations have been performed by one touch operation. The job execution portion makes a job execution speed different between a job for which the specific operation has been performed on the operation portion during setting operation, and a job set by only a normal operation without the specific operation during setting operation on the operation portion.

Abstract: An image forming apparatus (multifunction peripheral) includes an input portion and a job execution portion. The input portion includes an operation portion configured to accept user's setting input and stop of a job, and a communication portion, so as to accept a content confirmation input of a job to be executed. When executing a job for which the content confirmation input is not accepted, the job execution portion executes the job at lower speed for a predetermined number of sheets from first than a job for which the content confirmation input is accepted, and executes the job at the same speed after the predetermined number of sheets as the job for which the content confirmation input is accepted.