A printer clean device, wherein the printer clean device comprises: an inner case comprising a first accommodation groove and a second accommodation groove, wherein the first accommodation groove is adjacent to the second accommodation groove; an ink stack assembly disposed in the first accommodation groove; a scraper assembly disposed in the second accommodation groove and comprising a scraper, a base and at least one protrusion, wherein the scraper is disposed on the base, and the protrusion is disposed on a side of the base; a first movable member disposed in the second accommodation groove and comprising: an elastic element connected to a wall of the second accommodation groove; a sheet body connected to the elastic element and adjacent to the scraper; an end portion disposed at an end of the sheet body facing the scraper; and at least one extending portion extended from the sheet body toward the scraper and comprising a first surface and a second surface 54b; a transmission assembly penetrated through the first accommodation groove and the second accommodation groove and connected to the ink stack assembly and the scraper assembly, wherein by the rotation of the transmission assembly, the ink stack assembly is lifted or dropped between a first ink stack position and a second ink stack position, and the scraper assembly is lifted or dropped between a first scraper position and a second scraper position; and a driving device connected to the transmission assembly for driving the transmission assembly to rotate, wherein when the scraper assembly is lifted from the first scraper position to the second scraper position, the protrusion pushes against the first movable member from the first surface of the extending portion, so as to make the end portion away from the scraper, wherein when the scraper assembly is dropped from the second scraper position to the first scraper position, the protrusion pushes against the first movable member from the second surface of the extending portion, so as to make the end portion close to and contact with the scraper. an inner case comprising a first accommodation groove and a second accommodation groove, wherein the first accommodation groove is adjacent to the second accommodation groove; an ink stack assembly disposed in the first accommodation groove; a scraper assembly disposed in the second accommodation groove and comprising a scraper, a base and at least one protrusion, wherein the scraper is disposed on the base, and the protrusion is disposed on a side of the base; a first movable member disposed in the second accommodation groove and comprising: an elastic element connected to a wall of the second accommodation groove; a sheet body connected to the elastic element and adjacent to the scraper; an end portion disposed at an end of the sheet body facing the scraper; and at least one extending portion extended from the sheet body toward the scraper and comprising a first surface and a second surface 54b; an elastic element connected to a wall of the second accommodation groove; a sheet body connected to the elastic element and adjacent to the scraper; an end portion disposed at an end of the sheet body facing the scraper; and at least one extending portion extended from the sheet body toward the scraper and comprising a first surface and a second surface 54b; a transmission assembly penetrated through the first accommodation groove and the second accommodation groove and connected to the ink stack assembly and the scraper assembly, wherein by the rotation of the transmission assembly, the ink stack assembly is lifted or dropped between a first ink stack position and a second ink stack position, and the scraper assembly is lifted or dropped between a first scraper position and a second scraper position; and a driving device connected to the transmission assembly for driving the transmission assembly to rotate, wherein when the scraper assembly is lifted from the first scraper position to the second scraper position, the protrusion pushes against the first movable member from the first surface of the extending portion, so as to make the end portion away from the scraper, wherein when the scraper assembly is dropped from the second scraper position to the first scraper position, the protrusion pushes against the first movable member from the second surface of the extending portion, so as to make the end portion close to and contact with the scraper.