Patent ID: 8689687

Claim:
An apparatus for manufacturing electronic devices using a roll-to-roll rotary pressing process, comprising: a winding roll around which flexible printing paper is wound; a plurality of printing units arranged in a straight line; at least one coating unit, comprising: a coating-agent container to contain a coating agent therein; a coating-agent feeding roll installed to be immersed in the coating agent; a coating roll installed to contact the coating-agent feeding roll, rotating in one direction, and coating a surface of the printing paper having a circuit pattern with the coating agent; a coating press roll installed to contact the coating roll, thus pressing the printing paper; a rewinding roll to rewind the printing paper when printing has been completed; a plurality of guide rolls arranged between the winding roll and the rewinding roll, thus guiding the printing paper; and tension regulating units installed around the winding roll and the rewinding roll, respectively, for regulating tension of the printing paper; wherein each of the plurality of printing units comprises: an ink reservoir storing functional ink therein; an ink injection roll installed to be immersed in the functional ink; a forming roll installed to be rotated in one direction while contacting the ink injection roll, with forming grooves provided on a surface of the forming roll to correspond to a shape of a desired circuit pattern; a doctor blade installed to contact a side of the forming roll, and scraping ink from the surface of the forming roll; a first drying device adjacent to the forming roll and the doctor blade, the first drying device configured to partially dry a surface of the functional ink injected into each of the forming grooves of the forming roll after scraping the functional ink; a printing roll installed to be rotated in a direction opposite that of the forming roll while contacting the forming roll, and transferring forming ink transferred from the forming roll to the printing paper; a second drying device adjacent to the printing roll at an opposite side of the first drying device with respect to a contact point of the forming roll and the printing roll, the second drying device configured to partially dry another surface of the forming ink transferred to a surface of the printing roll after transferring the forming ink; and a press roll installed to be rotated in a direction opposite that of the printing roll while contacting the printing roll, and pressing the printing paper toward the printing roll at a constant pressure; and wherein the first drying device is at least one of a hot air supply unit or a hardening unit using IR, and the second drying device is at least one of a hot air supply unit or a hardening unit using IR.