Patent ID: 9623673
Date: 2017-04-18
CPC Classifications: B41J

Claim:
1. A sheet processing apparatus comprising: a sheet conveying unit configured to unwind a portion of a rolled sheet and convey the unwound sheet; a ribbon conveying unit configured to convey a ribbon having thereon a coloring layer that is not visible up to a predetermined temperature and becomes visible above the predetermined temperature; a thermal head configured to transfer the coloring layer on the ribbon to a portion of the unwound sheet; a cutter configured to cut off a portion of the unwound sheet to which the coloring layer is transferred; and a sheet storage unit in which the sheet cut off from the unwound sheet is stored, wherein the sheet conveying unit is further configured to convey the sheet stored in the sheet storage unit towards the thermal head, and the thermal head is further configured to form an image based on print data using the coloring layer on the sheet conveyed from the sheet storage unit.