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US 12,730,405 B2Granted
Printing equipment for metallic material and printing method using same
AssigneePosco
InventorSun-Hong Park
Life of this patent
Estimating the term…
Abstract
The present invention relates to a technology for printing an image of a letter, a drawing, etc. on the surface of a metallic material and, specifically, to printing equipment and a printing method using same, which can stably print an image on the surface of a metallic material at high speed.
Claims14
A printing device for a metallic material, the printing device comprising:
- a transfer belt, which is in close contact with a continuously moving metallic material and rotates in one direction, transferring a toner T attached to a surface thereof to a surface of a metallic material to be settled thereon;
- a photosensitive drum, which is in close contact with the transfer belt and rotates in a direction, opposite to the transfer belt, transferring the toner T attached to a surface thereof to a surface of the transfer belt;
- a developing unit provided on one side of the photosensitive drum and providing the toner T to the surface of the photosensitive drum;
- a photosensitive drum charging unit charging the surface of the photosensitive drum before the toner T is provided;
- an exposure unit applying light energy to the surface of the photosensitive drum according to a required image between the developing unit and the photosensitive drum charging unit;
- a metallic material charging unit charging the surface of the metallic material so that the toner T attached to the surface of the transfer belt is delivered to the surface of the metallic material;
- a removal unit removing the toner T remaining on the surface of the photosensitive drum after the toner T is settled on the surface of the metallic material;
- a photosensitive drum discharging unit removing the charge from the photosensitive drum after removing the toner T;
- and
- a fixing unit located at a rear end of the transfer belt to fix the toner T settled on the surface of the metallic material,
- wherein the metallic material charging unit is included as two or more, and two or more metallic material charging units are provided both in front and rear ends of the photosensitive drum based on a moving direction of the metallic material or both above and below the metallic material, and
- the two or more metallic material charging units are configured to charge the metallic material to the same polarity.
9 more elements
A printing method for a metallic material, the printing method comprising:
- a charging operation of charging a surface of a photosensitive drum rotating in one direction;
- an exposure operation of applying light energy to the surface of the charged photosensitive drum according to a required image;
- a developing operation of providing toner T to the surface of the photosensitive drum after the exposure;
- moving the toner attached to the surface of the photosensitive drum to a surface of a charged transfer belt;
- a transfer operation of continuously moving the toner attached to the surface of the charged transfer belt and moving the toner to a surface of a charged metallic material to settle the toner thereon;
- a fixing operation of fixing the toner settled on the surface of the metallic material;
- a removal operation of removing the toner remaining on the surfaces of the photosensitive drum and the charged transfer belt after the transfer;
- and
- a discharging operation of discharging the surfaces of the photosensitive drum and the charged transfer belt,
- wherein a resin layer is formed on the surface of the metallic material, and
- the metallic material is charged by undergoing two or more charging operations of the same polarity such that the toner T attached to the transfer belt is moved and fixed to the metallic material during the transfer operation.
8 more elements
Dependencies are inferred from the claim text.