Metal material printing equipment and printing method, and printed metal material obtained therefrom

1 . Metal printing equipment comprising:

a photosensitive drum ( 300 ) coming in close contact with metal ( 100 ) moving continuously, rotating in one direction, and transferring and fixing a toner T attached to a surface thereof to a surface of the metal ( 100 );

a developing unit ( 500 ) provided on one side of the photosensitive drum ( 300 ) and providing the toner (T) to the surface of the photosensitive drum ( 300 );

a photosensitive drum charging unit ( 410 ) charging the surface of the photosensitive drum ( 300 ) before the toner (T) is provided;

an exposure unit ( 200 ) applying light energy to the surface of the photosensitive drum ( 300 ) according to a required image, between the developing unit ( 500 ) and the photosensitive drum charging unit ( 410 );

metal charging unit ( 101 ) charging the surface of the metal ( 100 ) such that the toner (T) attached to the surface of the photosensitive drum ( 300 ) is transferred to the surface of the metal ( 100 );

a removal unit ( 600 ) removing the toner (T) remaining on the surface of the photosensitive drum ( 300 ) after the toner (T) is fixed to the surface of the metal ( 100 );

a photosensitive drum discharging unit ( 420 ) removing a charge from the photosensitive drum ( 300 ) after removing the toner (T); and

a fixing unit ( 700 ) located on a rear end of the photosensitive drum ( 300 ) and fixing the toner (T) fixed to the surface of the metal ( 100 ),

wherein the fixing unit ( 700 ) includes a pressure roll ( 720 ),

wherein the pressure roll ( 720 ) has a structure capable of moving up and down depending on the thickness of the metal ( 100 ) in a fixing operation,

wherein the metal charging unit ( 101 ) is included as two or more, and two or more metal charging units ( 101 ) are provided both in front and rear ends of the photosensitive drum ( 300 ) based on a moving direction of the metal ( 100 ) or both above and below the metal ( 100 ), and

the two or more metal charging units ( 101 ) are configured to charge the metal ( 100 ) to the same polarity.

2 . The metal printing equipment of claim 1 , wherein the removal unit ( 600 ) includes a blade ( 610 ) and a collection bin ( 620 ) located on a lower end of the blade ( 610 ).

3 . The metal printing equipment of claim 2 , wherein the removal unit ( 600 ) further includes an alcohol brush ( 630 ) between the blade ( 610 ) and the collection bin ( 620 ).

4 . The metal printing equipment of claim 1 , wherein the light energy is a laser or an LED.

5 . The metal printing equipment of claim 4 , wherein when the light energy is a laser, the exposure unit ( 200 ) includes a laser generator ( 210 ) and a scanning mirror ( 220 ).

6 . The metal printing equipment of claim 1 , wherein the developing unit ( 500 ) includes a toner container ( 520 ) and a developing roller ( 510 ) providing the toner (T) of the toner container ( 520 ) to the photosensitive drum ( 300 ).

7 . The metal printing equipment of claim 1 , wherein the fixing unit ( 700 ) includes a fused roll ( 710 ).

8 . The metal printing equipment of claim 1 , wherein two or more of the photosensitive drums, the photosensitive drum charging units, the photosensitive drum discharging units, the exposure units, the developing units, and the removal units are provided in pairs in the moving direction of the metal ( 100 ),

wherein the respective developing units provide toner of different colors.

9 . The metal printing equipment of claim 1 , wherein the metal printing equipment is located above and below the metal.

10 . A metal printing method comprising:

a charging operation of charging a surface of a photosensitive drum ( 300 ) rotating in one direction;

an exposure operation of applying light energy according to a required image to the surface of the charged photosensitive drum ( 300 );

a development operation of providing toner (T) to the surface of the photosensitive drum ( 300 ) after the exposure operation;

a transfer operation of continuously moving the toner attached to the surface of the photosensitive drum ( 300 ) and moving and fixing the toner to a surface of a charged metal ( 100 );

a fixing operation of fixing the toner settled on the surface of the metal ( 100 );

a removal operation of removing toner remaining on the surface of the photosensitive drum ( 300 ) after the transfer operation; and

a discharging operation of discharging the surface of the photosensitive drum ( 300 ),

wherein a pressure roll ( 720 ) moves up and down depending on the thickness of the metal ( 100 ) in the fixing operation, and

wherein the metal ( 100 ) is charged by undergoing two or more charging operations of the same polarity such that the toner (T) attached to the photosensitive drum ( 300 ) is moved and fixed to the metal ( 100 ) during the transfer operation.

11 . The metal printing method of claim 10 , wherein the fixing operation is performed by heating to 25~400° C.

12 . The metal printing method of claim 10 , wherein the fixing operation is performed by applying pressure.

13 . The metal printing method of claim 10 , wherein when printing using two or more toners two or more photosensitive drums are required, and

two or more of the charging operations, the exposure operations, the development operations, the transfer operations, and the removal operations are performed using respective photosensitive drums.