An image forming device includes: a print engine to form an image on a medium, a sensor to irradiate light onto the medium and to detect an amount of light transmitted through the medium, and a processor to control the print engine based on the detected transmitted light amount and temperature data.

There are a paper storage that stores paper on which an image is formed, a paper guide that is movably provided in the paper storage and restricts a position of the stored paper, a paper size acquirer that acquires a size of the paper stored in the paper storage, a size change determiner that determines, by using the acquired size of the paper, whether the paper stored in the paper storage was changed, a confirmation information selector that, when it is determined that the paper stored in the paper storage was changed, selects confirmation information requesting confirmation of a position of the paper guide in the paper storage in accordance with a difference in size between paper before and after the change, and a confirmation information notifier that notifies the selected confirmation information.

A paper size detection device comprises a first actuator comprising a plurality of operating arms and a first detection arm to move in association with movement of the plurality of operating arms, the plurality of operating arms having lengths or angles different from each other; a first sensor to output different results in accordance with a position of the first detection arm; a second actuator comprising one operating arm and a second detection arm to move in association with movement of the one operating arm; and a second sensor to output different results in accordance with a position of the second detection arm.

An image forming apparatus is disclosed. A fixing device includes a heating rotary member and a pressing rotary member. The fixing device further includes an acquisition means that acquires information about a printing medium for a predetermined number of sheets beforehand, and a temperature control means that controls a temperature of the heating rotary member based on the information about a basis weight acquired by the acquisition means. A job in which different basis weights are mixed is a mixed job. In a case where the mixed job is executed and the temperature of the heating rotary member is changed while the mixed job is executed, a change amount of the temperature of the heating rotary member is reduced based on the information about the basis weight of the printing medium acquired by the acquisition means.

A method comprises obtaining a training dataset, the training dataset comprising sheet passage interval information associated with conveyance of a plurality of sheets in a sheet conveyance path of a training sheet processing apparatus, at least a portion of the sheets of the plurality of sheets having a known sheet classification of a set of sheet classifications; obtaining sheet timing data associated with the classifying, the sheet timing data comprising sheet passage interval information associated with conveyance of a predetermined number of sheets in the sheet conveyance path of a deployed sheet processing apparatus; classifying, using a machine learning model and the training dataset and the sheet timing data, for each interval window of a plurality of different interval windows, a predetermined number of sheets in a sheet conveyance path of a deployed sheet processing apparatus as a particular classification of the set of sheet classifications; and adjusting, based on the classifying, one or more operational parameters of a deployed sheet processing apparatus.

A fixing device includes: a non-contact heating unit configured to heat a recording medium in a non-contact manner; and a contact heating unit configured to press and heat the recording medium on a downstream side of the non-contact heating unit in a conveyance direction of the recording medium, in which the non-contact heating unit controls an amount of heat applied to the recording medium according to information on whether the recording medium is black or not, and a thickness of the recording medium, and the contact heating unit controls the pressure applied to the recording medium according to the thickness regardless of whether the recording medium is black or not.

An image formation apparatus includes: an image former that forms an image on a recording medium delivered along a predetermined delivery path; a first hardware processor that judges whether or not the recording medium is an envelope; a second hardware processor that acquires a basis weight of the envelope; a third hardware processor that determines, in case the first hardware processor judges that the recording medium is the envelope, control for forming an image on the envelope by the image former on the basis of the basis weight of the envelope acquired by the second hardware processor.

A media transport system is used to transport a media sheet along a media transport path past an image capture system. The image capture system includes an image capture device positioned to capture an image of the media sheet, and a platen positioned behind the media sheet, wherein a surface of the platen includes a non-uniform density pattern. The image capture system captures an image of the media sheet that includes at least one edge of the media sheet and a portion of the platen that extends beyond the edge of the media sheet. An image analysis system automatically analyzes the captured digital image to detect an edge position of the media sheet by detecting a platen region that includes the non-uniform density pattern and a media region. The detected edge position is used to adjust a position that a printing module prints image data onto the media sheet.

An image forming apparatus includes: a sheet feeding conveyor that feeds and conveys a recording medium to a conveyance path; an image former that performs image formation on the recording medium; a medium sensor that is disposed on an upstream side of the recording medium from the image former on the conveyance path and measures one or more sheet physical properties regarding the recording medium conveyed; a first hardware processor that determines a type of the recording medium on a basis of the sheet physical properties measured by the medium sensor; a second hardware processor that determines conveyance performance for the recording medium; and a third hardware processor that determines whether or not to perform the image formation on a basis of the conveyance performance in a case where the type of the recording medium determined by the first hardware processor is a type out of product specifications.

An image forming apparatus includes a first detector detecting an operation sound based on a sound wave received by a receiver; a second detector detecting basis weight of recording material based on an ultrasonic wave transmitted from a transmitter and received by the receiver; a switching unit that switches destination of a reception signal from the receiver between a first path to the first detector and a second path to the second detector; and a controller that controls the switching unit such that the reception signal is output to the first path at a first timing and to the second path at a second timing. When a predetermined condition is satisfied, the controller controls the switching unit such that the reception signal is output to the second path at the first timing or to the first path at the second timing.