There is provided an image recording apparatus having a housing having a front wall and a rear wall, and a right wall and a left wall defining an internal space of the housing, a sheet roll holder configured to hold a sheet roll, a supporting member configured to support the sheet roll, the supporting member extending in an axial direction of the sheet roll and being supported by the sheet roll holder, a sheet conveyer arranged in an internal space of the housing, the sheet conveyer being configured to convey a sheet unwound from the sheet roll, and a recording device configured to record an image on the sheet unwound from the sheet roll and conveyed by the sheet conveyer. The sheet roll holder is configured to be slidable with respect to the housing so as to be detachable from and attachable to the housing.

A sheet feeding device includes a support, a rotation driver, a guide, a support shaft, a biasing member, a leading end sensor, a roller, an outer diameter sensor, and circuitry. The circuitry causes the rotation driver to rotate a spool in a winding direction to determine a timing at which a signal change rate exceeds a change rate threshold as a passing time at which a leading end of a continuous sheet passes through the leading end sensor, causes the rotation driver to rotate the spool by a rotation angle in the winding direction, from the passing time, to position the leading end of the continuous sheet at a feeding start position, and rotates the spool in a feeding direction to feed the continuous sheet from the feeding start position along a guide portion. Further, the circuitry changes the change rate threshold based on an outer diameter of a roll.

An image forming apparatus, having a housing, a tray detachably attachable to the housing and having a storage to store a sheet-formed medium, an image forming device to form an image on the sheet-formed medium, a conveyer assembly to convey the sheet-formed medium from the storage along a conveyer path, and a cutter to cut the sheet-formed medium at a predetermined position in the conveyer path, is provided. The conveyer assembly includes a feeder roller to feed the sheet-formed medium from the storage to the conveyer path, and an intermediate roller pair arranged in the conveyer path between the feeder roller and the image forming device. The intermediate roller pair is supported by the housing and is configured to nip the sheet-formed medium. The predetermined position is located in the conveyer path between the feeder roller and the intermediate roller pair.

An information processing apparatus includes a controller configured to, if it is determined that a connecting process of connecting a continuous sheet and another continuous sheet to each other is to be executed when a trailing end of the continuous sheet transported by a printing unit is detected, prohibit the continuous sheet from being transported in response to a user's operation at a time when the trailing end of the continuous sheet is detected.

A sheet folding processing apparatus performs folding processing on continuously conveyed sheets without lowering productivity. A sheet folding processing apparatus includes a conveyance roller pair, a folding roller pair forming a plurality of fold lines by bending a sheet conveyed from the conveyance roller pair in Z-shape, an additional folding roller and a lower folding guide arranged downstream of the folding roller pair to face each other and pressing the fold line of the sheet in corporation with each other, and a controller controlling operation of the above. The controller controls the folding roller pair to convey the sheet with the fold line downstream in a conveyance direction until the fold line passes through the additional folding position by a predetermined conveyance amount, to return the sheet upstream by reversely rotating the folding roller pair, and to position the fold line to the additional folding position for additional folding processing.

A managing apparatus includes a processor configured to use continuous paper strips as recording media, receive multiple print jobs having different print speeds, and create print groups into which the multiple print jobs are classified according to print speed.

An image forming apparatus includes an image former that forms a color image by superimposing images of respective colors formed on respective different photoconductors on an intermediate transfer body, the image former continuously forming color images of pages on one continuous paper, and the image forming apparatus includes: a first hardware processor that performs job management for each color and generates print job data in which a margin region having a first width is set on an upstream or a downstream in a sheet passing direction of an image forming region of each page; a second hardware processor that detects a color shift amount of each color of the image forming region; and a third hardware processor that corrects a formation position of the image forming region to be a print target page next on the print job data for a color in which a color shift has occurred.

An image forming apparatus forms a color image on a recording medium by superimposing images of colors formed by image forming units. The apparatus includes a processor that: acquires a read image by reading the recording medium on which the color image has been formed; forms a register patch outside a job image forming region of the recording medium; and corrects image forming positions of the image forming units based on the read image that includes the register patch. The register patch includes: a leading end patch and a rear end patch formed with a reference color material; and one or more measurement target color patches formed with measurement target color materials between the leading end patch and the rear end patch. The hardware processor corrects the image forming positions based on relative positions of the leading end patch, the rear end patch, and the measurement target color patches.

A printer includes a case including an input port for rolled paper, a cover provided to be rotatable between a closed position of the input port and an open position of the input port, a holding portion that holds the rolled paper, a biasing member that biases the holding portion in a first direction, a stopper mechanism that stops rotation of the holding portion in the first direction, and a linkage mechanism that rotates the holding portion in conjunction with the rotation of the cover. When the cover is in the closed position, the holding portion rotates in the first direction in accordance with an outer diameter of the rolled paper by a biasing force of the biasing member. When the cover rotates from the closed position to the open position, the holding portion rotates together with the cover against the biasing force of the biasing member.

An image forming apparatus includes: a main part that forms an image on a continuous medium in a state in which a tension is applied to the continuous medium, the continuous medium being fed from a first roll and conveyed to be taken up on a second roll; and a tension maintaining part that maintains the tension of the continuous medium at the main part during a manipulation for replacing at least one of the first roll and the second roll.