A spindle assembly capable of accommodating paper rolls of varying sizes is provided. The spindle assembly comprises a spindle arm adapted to be connected to a printer mechanism. The spindle arm comprises a first flange surrounding an opening. A spindle is provided for accepting a first paper roll. A first end of the spindle is fixed in the opening of the spindle arm. The spindle comprises a second flange arranged at a second end of the spindle. A sleeve is provided which is adapted to slide over the spindle and attach to the spindle arm for accepting a second paper roll. The second paper roll has a different size than the first paper roll. A printer having such a spindle assembly is provided, as is a method for accommodating different sized paper rolls in a printer.

A spindle assembly capable of accommodating paper rolls of varying sizes is provided. The spindle assembly comprises a spindle arm adapted to be connected to a printer mechanism. The spindle arm comprises a first flange surrounding an opening. A spindle is provided for accepting a first paper roll. A first end of the spindle is fixed in the opening of the spindle arm. The spindle comprises a second flange arranged at a second end of the spindle. A sleeve is provided which is adapted to slide over the spindle and attach to the spindle arm for accepting a second paper roll. The second paper roll has a different size than the first paper roll. A printer having such a spindle assembly is provided, as is a method for accommodating different sized paper rolls in a printer.

A described example includes a ribbon cartridge having a first spool housing configured to receive a first spool. The ribbon cartridge having a second spool housing that is configured to receive a second spool. The ribbon cartridge having a first frame member that extends between the first spool housing and the second spool housing. The ribbon cartridge having a first locking feature defining a locked position and an unlocked position, the first locking feature adapted to lock the ribbon cartridge within a ribbon positioning assembly.

An information processing system includes a processor configured to dynamically change an estimation of a time needed to execute each print job in accordance with variations in a combination of print jobs allocated to one roll of rolled paper.

An attachment capable of being attached, in a detachable manner, to an accommodation part of a printing apparatus which is for accommodating a print medium, the attachment being configured to support a roll including the print medium which is wound, the attachment including: a housing having a substantially box shape of which an upper part is opened, the housing being configured to accommodate the roll inside thereof in a replaceable manner; an engaging part provided to the housing and configured to engage, in a disengageable manner, to an engaged part provided to the accommodation part when the housing is attached to the accommodation part; and a support part provided to the housing and configured to rotatably support the roll.

An attachment capable of being attached, in a detachable manner, to an accommodation part of a printing apparatus which is for accommodating a print medium, the attachment being configured to support a roll including the print medium which is wound, the attachment including: a housing having a substantially box shape of which an upper part is opened, the housing being configured to accommodate the roll inside thereof in a replaceable manner; an engaging part provided to the housing and configured to engage, in a disengageable manner, to an engaged part provided to the accommodation part when the housing is attached to the accommodation part; and a support part provided to the housing and configured to rotatably support the roll.

A print apparatus includes a holding unit to hold a roll sheet obtained by winding a sheet, a driving unit, a separation flapper, a pressure contact roller, a print unit, a displacement sensor, and a control unit. The driving unit rotates the held roll sheet. The separation flapper follows a roll sheet surface to separate the sheet from the roll sheet. The pressure contact roller comes into pressure contact with the roll sheet surface. The print unit prints an image on the sheet supplied by rotating the roll sheet in pressure contact with the pressure contact roller in a forward direction. The displacement sensor detects a separation flapper displacement amount according to separation flapper rotation when the sheet is supplied to the print unit after a roll sheet front end is detected. The control unit stops the roll sheet rotation when the amount of displacement exceeds a threshold.

A print apparatus includes a holding unit to hold a roll sheet obtained by winding a sheet, a driving unit, a separation flapper, a pressure contact roller, a print unit, a displacement sensor, and a control unit. The driving unit rotates the held roll sheet. The separation flapper follows a roll sheet surface to separate the sheet from the roll sheet. The pressure contact roller comes into pressure contact with the roll sheet surface. The print unit prints an image on the sheet supplied by rotating the roll sheet in pressure contact with the pressure contact roller in a forward direction. The displacement sensor detects a separation flapper displacement amount according to separation flapper rotation when the sheet is supplied to the print unit after a roll sheet front end is detected. The control unit stops the roll sheet rotation when the amount of displacement exceeds a threshold.

An auxiliary member is an auxiliary member that assists in mounting a roll body, which is formed by winding a sheet into a roll shape on a core tube, onto a shaft of a printing apparatus. The auxiliary member includes a cylindrical main body insertable into the core tube, a laser irradiation unit that irradiates laser light from a leading end surface of the main body, and a switch that switches between irradiation and stopping of the laser light from the laser irradiation unit.

An auxiliary member is an auxiliary member that assists in mounting a roll body, which is formed by winding a sheet into a roll shape on a core tube, onto a shaft of a printing apparatus. The auxiliary member includes a cylindrical main body insertable into the core tube, a laser irradiation unit that irradiates laser light from a leading end surface of the main body, and a switch that switches between irradiation and stopping of the laser light from the laser irradiation unit.