Abstract: Disclosed is an endoscope having a rotating device to axially rotate a bending member. The endoscope includes a flexible member which is freely bendable upon receiving external force, a bending member provided at a front end of the flexible member, the bending member being bendable with one degree of freedom, a rotating device rotatably coupled to the flexible member in an axial direction of the flexible member and serving to rotate the bending member in the axial direction, and an operating unit connected to the rotating device and having a rotation operation unit to rotate the rotating device.

Abstract: An image drum for selectively adsorbing toner in a printing apparatus is provided. A method and a configuration of ring electrodes formed on an outside of a drum body is also provided. That is, a control board is mounted inside the drum body, of which a plurality of terminals is externally exposed in the cylindrical drum body, and a photocurable resin is coated on the circumferential surface. Ring electrodes are then formed on circumferential surface of the drum body, by rotating the drum body and allowing an ultraviolet ray through the mask pattern onto the drum body to harden the liquid photocurable resin after contacting a mask-patterned mold mask to the circumferential surface of the drum body.

Abstract: An image drum manufacturing method including: providing a hollow cylindrical mold having a plurality of mold grooves circumferentially cut in its inner circumferential surface and a core portion having a smaller diameter than a hollow of the mold and having a slit-shaped combination groove; filling a conductive material into the mold grooves of the mold; inserting a control unit for individually applying a voltage to each terminal in the combination groove of the core portion, so that a conductive pattern corresponding to the conductive material is partially exposed; inserting the core portion into the mold so that the conductive pattern corresponds to the conductive material filled into each mold groove; and forming a drum body to be integrally formed with the control unit and the conductive material by filling a molten plastic into a space between the mold and the core portion.

Abstract: An image forming apparatus that may be easily and inexpensively manufactured is provided. The image forming apparatus includes: a toner supply unit; an image forming element to which toner is adsorbed from the toner supply unit; an image developing unit disposed on an outer side of the image forming element, wherein said image developing unit selectively separates from the image forming element at least a part of the toner adsorbed to the image forming element in order to develop an image on the image forming element; and a toner return unit which returns the toner separated from the image forming element by the image developing unit to the toner supply unit.

Abstract: An image forming element and its manufacturing apparatus and method are disclosed, in which manufacturing process steps can be simplified to reduce the cost and improve productivity. The manufacturing method of an image forming element includes respectively providing a mold and an image drum, forming line shaped conductive paste patterns on the mold, and transferring the conductive paste patterns from the mold onto the image drum.

Abstract: An image drum for selectively adsorbing toner in a printing apparatus is provided. A method and a configuration of ring electrodes formed on an outside of a drum body is also provided. That is, a control board is mounted inside the drum body, of which a plurality of terminals is externally exposed in the cylindrical drum body, and a photocurable resin is coated on the circumferential surface. Ring electrodes are then formed on circumferential surface of the drum body, by rotating the drum body and allowing an ultraviolet ray through the mask pattern onto the drum body to harden the liquid photocurable resin after contacting a mask-patterned mold mask to the circumferential surface of the drum body.

Abstract: An image drum manufacturing method including: providing a hollow cylindrical mold having a plurality of mold grooves circumferentially cut in its inner circumferential surface and a core portion having a smaller diameter than a hollow of the mold and having a slit-shaped combination groove; filling a conductive material into the mold grooves of the mold; inserting a control unit for individually applying a voltage to each terminal in the combination groove of the core portion, so that a conductive pattern corresponding to the conductive material is partially exposed; inserting the core portion into the mold so that the conductive pattern corresponds to the conductive material filled into each mold groove; and forming a drum body to be integrally formed with the control unit and the conductive material by filling a molten plastic into a space between the mold and the core portion.