Positioning apparatus used in a process for producing multi-layered printed circuit board and method of using the same

Apparatus for producing a multi-layered printed circuit board that includes a plurality of insulated layers and a plurality of conductive layers having a conductive pattern, comprising;

• a photo mask facing one side of a board on which multi-layered printed circuits will be formed, the photo mask having a pattern for a conductive circuit to be formed on the board,
• a board mark that can be imaged by Xrays formed on at least one of said layers of said multi-layered printed circuit board,
• a mask mark formed on said photo mask,
• means for irradiating Xrays on an area containing said board mark,
• a projection screen that can convert Xrays to one of visible rays, ultra violet rays or infrared rays for projecting said mark thereon irradiated by Xrays,
• means for moving at least one of said multi-layered printed circuit board and said photo mask based on said board mark projected on said projection screen and said mask mark so as to adjust the relative position between said board and said photo mask,
• a projection light source shining said pattern of said photo mask onto said board.

Apparatus for boring a hole through multi-layers of a printed circuit board that includes a plurality of insulated layers and a plurality of conductive layers having a conductive pattern used in a producing process of a multi-layered printed circuit board, comprising

• a mark that can be imaged by Xrays formed on at least one of said layers of said multi-layered printed circuit board,
• means for irradiating Xrays on an area containing said mark,
• a projection screen that can convert Xrays to one of visible rays, ultra violet rays or infrared rays for projecting said mark irradiated by Xrays thereon,
• means for moving at least one of said multi-layered printed circuit board and a laser projection point of the apparatus for boring based on said mark projected on said projection screen so as to set up said laser projection point.

Apparatus for boring a hole through laminated printed circuit boards that compiles a plurality of circuit boards used in a producing process of said laminated printed circuit boards, comprising

• a mark that can be imaged by Xrays formed on at least one of said boards,
• means for irradiating Xrays on an area containing said mark,
• a projection screen that can convert Xrays to one of visible rays, ultra violet rays or infrared rays for projecting said mark irradiated by Xrays thereon,
• means for moving at least one of said boards and a boring point of the apparatus for boring based on said mark projected on said projection screen so as to set up said boring point.