Color erasing apparatus and control method of the color erasing apparatus

A color erasing apparatus comprising:

• conveyance means for conveying a sheet on which an image is formed of a color erasable coloring material;
• color erasing means for erasing a color of the coloring material of the image formed on the sheet conveyed by the conveyance means;
• control means for counting the processed number of sheets images of which are color-erased by the color erasing means and determining whether the processed number of sheets exceeds a previously set threshold, and stopping a sheet color erasing process of the color erasing means after the sheets to be conveyed and color erased are used up;
• and
• notification interface means for outputting a signal for notifying that cleaning of the color erasing part is required at least if the processed number of sheets exceeds the threshold.

A control method of a color erasing apparatus including a color erasing part, comprising:

• erasing a color of a coloring material of an image formed on a conveyed sheet by the color erasing part;
• counting the processed number of sheets with images that are color-erased;
• stopping a sheet color erasing process of the color erasing part after the sheets to be conveyed and color erased are used up;
• and
• notifying a user that cleaning of the color erasing part is required at least if a processed number of sheets exceeds a previously set threshold.