Image recording apparatus and control method thereof

A control method of an image recording apparatus for conveying a roll paper as a sheet and a cut paper as a sheet on a common conveyance path to record an image on the sheet, the control method comprising:

• allowing a user to select, as a sheet type, a mode of either a roll paper mode for conveying the roll paper and a cut paper mode for conveying the cut paper;
• detecting a rotation of a rolling portion of the roll paper;
• determining whether the sheet is the roll paper or the cut paper based on the detection in the detecting;
• suspending the conveyance of the sheet in a case where it is determined that the sheet being conveyed is different from the selected sheet type;
• and
• restarting a suspended sheet conveyance suspended during the cut paper mode, by switching the mode to the roll paper mode.

A control method for an image recording apparatus that conveys, on a common conveyance path as a sheet, a continuous sheet drawing out from a roll paper or a cut paper, records, as a recording, an image onto the sheet in a recording unit, and discharges the sheet up to a trailing edge in either one of a cut paper mode and a roll paper mode, wherein the cut paper mode is for discharging the sheet after finishing the recording, to an outside of the image recording apparatus, and the roll paper mode is for suspending the discharge of the sheet after finishing the recording while the sheet exists in the recording unit, and wherein one of the cut paper mode and the roll paper mode is selected before starting the conveyance of the sheet, the control method comprising:

• detecting a rotation of a rolling portion of the roll paper;
• determining whether the sheet presently conveyed is the roll paper or the cut paper based on a detection of the rotation while the sheet is conveyed and before the recording is started;
• and
• suspending the conveyance of the sheet before the recording is started in response to the sheet being incompatible with the selected mode.

A sheet conveying apparatus comprising:

• a mode selecting unit configured to select either a roll sheet mode or a cut sheet mode;
• a conveying unit configured to convey a sheet;
• and
• a detection unit configured to detect a movement of a roll sheet when the conveying unit is conveying the sheet,
• wherein the conveying unit stops the conveyance of the sheet in a case where the movement of the roll sheet is detected by the detection unit under a condition that the cut sheet mode is selected by the mode selecting unit and in a case where the movement of the roll sheet is not detected by the detection unit under a condition that the roll sheet mode is selected by the mode selecting unit.

An image forming apparatus comprising:

• a mode selecting unit configured to select either a roll sheet mode or a cut sheet mode;
• a conveying unit configured to convey a sheet;
• a detection unit configured to detect a movement of a roll sheet when the conveying unit is conveying the sheet;
• and
• a recording unit configured to record an image on a sheet conveyed by the conveying unit,
• wherein the conveying unit stops the conveyance of the sheet in a case where the movement of the roll sheet is detected by the detection unit under a condition that the cut sheet mode is selected by the mode selecting unit and in a case where the movement of the roll sheet is not detected by the detection unit under a condition that the roll sheet mode is selected by the mode selecting unit.