Techniques for determination of size of printable medium are described. In an example, a printing device includes an adjuster that is movable based on a size of a printable medium to be fed to the printing device. A first element is coupled to the adjuster and moves with the adjuster to indicate a position of the adjuster. A second element is movable relative to the adjuster. A position signal indicative of a distance between the second element and the first element is generated. The position signal can be used to determine the size of the printable medium.

Techniques for determination of size of printable medium are described. In an example, a printing device includes an adjuster that is movable based on a size of a printable medium to be fed to the printing device. A first element is coupled to the adjuster and moves with the adjuster to indicate a position of the adjuster. A second element is movable relative to the adjuster. A position signal indicative of a distance between the second element and the first element is generated. The position signal can be used to determine the size of the printable medium.

Medicine packaging apparatuses and methods for accurately determining a remaining sheet amount of a medicine packaging sheet are described. The apparatus includes: a roll support section to which a core tube of a medicine packaging sheet roll is attached; a sensor disposed in the roll support section for outputting a count value according to a rotation amount; a wireless reader-writer unit for writing information to a core tube IC tag and reading said information; an information generation section for generating information to be written to the core tube IC tag; a remaining sheet amount estimation section for estimating a current amount of remaining sheet based on the information and dimensional information of the core tube; and a controller which selectively performs an operation if a reference time-point count value is not yet written to the core tube IC tag and another operation if the count value is already written thereto.

Medicine packaging apparatuses and methods for accurately determining a remaining sheet amount of a medicine packaging sheet are described. The apparatus includes: a roll support section to which a core tube of a medicine packaging sheet roll is attached; a sensor disposed in the roll support section for outputting a count value according to a rotation amount; a wireless reader-writer unit for writing information to a core tube IC tag and reading said information; an information generation section for generating information to be written to the core tube IC tag; a remaining sheet amount estimation section for estimating a current amount of remaining sheet based on the information and dimensional information of the core tube; and a controller which selectively performs an operation if a reference time-point count value is not yet written to the core tube IC tag and another operation if the count value is already written thereto.

In an image forming apparatus, a paper feeder includes: an openable and closable paper feed tray that stores a paper; and an opening and closing detector that detects an open or closed state of a paper feed tray, when determining that abnormality occurs to the paper feed tray that is currently feeding the paper for an image forming device to form an image, an controller determines that the abnormality is caused by failure of the paper feed tray, and executes predetermined first abnormality processing, and when determining that the abnormality occurs to the paper feed tray at the time when the opening and closing detector detects that the paper feed tray is brought into a closed state from an open state, the controller determines that the abnormality is caused by storage failure of the paper stored in the paper feed tray, and executes predetermined second abnormality processing.

A cutting device is configured to cut, in an arc shape, an end of a sheet conveyed in a conveyance direction. The cutting device includes an arc-shaped cutting blade; a switching mechanism; and a contact-and-separation mechanism. The switching mechanism is configured to switch a posture of the cutting blade in accordance with a position of the sheet facing the cutting blade. The contact-and-separation mechanism is configured to bring the cutting blade into contact with the sheet in a contact direction orthogonal to a surface of the sheet and away from the sheet in a separation direction opposite the contact direction, to cut the end of the sheet in the arc shape.

A cutting device is configured to cut, in an arc shape, an end of a sheet conveyed in a conveyance direction. The cutting device includes an arc-shaped cutting blade; a switching mechanism; and a contact-and-separation mechanism. The switching mechanism is configured to switch a posture of the cutting blade in accordance with a position of the sheet facing the cutting blade. The contact-and-separation mechanism is configured to bring the cutting blade into contact with the sheet in a contact direction orthogonal to a surface of the sheet and away from the sheet in a separation direction opposite the contact direction, to cut the end of the sheet in the arc shape.

A recording apparatus includes a housing configured to house a recording portion recording an image on a sheet and to have a side including an opening through which the sheet passes, a tray configured to rotate about a rotation shaft, relative to the housing, between a closed position at a first angle for closing the opening and an open position at a second angle for loading the sheet, and an urging mechanism configured to urge the tray toward the closed position when an angle about the rotation shaft of the tray is between the first angle and a third angle and to urge the tray toward the open position when an angle about the rotation shaft of the tray is between the third angle and the second angle. The third angle is an angle between the first angle and the second angle.

A recording apparatus includes a housing configured to house a recording portion recording an image on a sheet and to have a side including an opening through which the sheet passes, a tray configured to rotate about a rotation shaft, relative to the housing, between a closed position at a first angle for closing the opening and an open position at a second angle for loading the sheet, and an urging mechanism configured to urge the tray toward the closed position when an angle about the rotation shaft of the tray is between the first angle and a third angle and to urge the tray toward the open position when an angle about the rotation shaft of the tray is between the third angle and the second angle. The third angle is an angle between the first angle and the second angle.

A sheet supplying apparatus, which is capable of winding a sheet tightly, includes a driving unit configured to cause a roll including a wound consecutive sheet to rotate in a first direction for feeding the sheet or a second direction opposite to the first direction, a sensor that detects a leading end portion of the sheet separated from an outer circumferential surface of the roll, and a contact body that presses the outer circumferential surface. Before the sheet is fed, in a state in which the contact body presses the outer circumferential surface, the driving unit causes the roll to continuously rotate in the second direction until a detection cycle of the leading end portion by the sensor is less than a predetermined value.