Abstract: An ultra-precision register control method in a continuous roll-to-roll printing process for manufacturing electronic devices via a feedforward register control logic, which compensates for and eliminates additional register errors attributable to variations in the speed of upstream printing cylinders. When used in combination with a conventional feedback register control logic, the feedforward register control logic accomplishes a register control with ultra-precision in a continuous roll-to-roll printing process, and enables implementation of a continuous roll-to-roll printing process for manufacturing electronic devices, for which a roll-to-roll printing process was formerly unavailable.

Abstract: A system and a method for mass production of Dye-Sensitized Solar Cells at low cost via a continuous roll-to-roll process. While a flexible conductive substrate is constantly in transit on a conveyor, a titanium dioxide (TiO2) layer is: formed by spray printing; sintered; dyed in a dye tank, with or without immersion, by a dye solution sprayed from nozzles while the substrate moves along a conveyor line configured as multiple alternating U-shaped lines; washed and dried; loaded with a gel-type electrolyte by roll-type printing; and covered and pressure-sealed by another flexible conductive substrate, aided by preloaded sealants. The dye solution in the dye tank may be re-circulated, during which process, the temperature, level, concentration of the dye solution may be adjusted and controlled. The roll-to-roll production process may further include erecting anti-leakage walls and leveling the electrolyte layer for preventing post-sealing leakage of the electrolyte.

Abstract: Disclosed are a roll-to-roll printing system and method in which a large number of micro-nozzles are formed directly in a printing roll, and thus ink supplied to the central portion of the roll can be formed into micro-inkjets by inducing an electrostatic field, and furthermore, as a result of the formation of the micro-inkjets, a micro-sized pattern significantly smaller than that achievable by a prior pattern formation method can be printed on a print medium, and in addition, the relative speed of the print medium relative to the roll can be maintained at a speed close to “0” so as to improve the resolution, integration density and precision of the printed pattern. According to the present invention, a large amount of micro-nozzles are formed directly in a printing roll, and thus ink supplied to the central portion of the roll can be formed into micro-inkjets by inducing an electrostatic field.

Abstract: According to the disclosed is a method for controlling taper tension in the winding section of a web handling system, a more stable, high-quality wound roll can be produced by stabilizing radial stress distribution and minimizing telescoping, which is the lateral displacement of material in the winding section, using either hybrid taper tension control through a hybrid factor (?) or heaviside taper tension control through a heaviside factor (?), in the winding process, which is the final section of the roll-to-roll or web handling system.

Abstract: An ultra-precision register control method in a continuous roll-to-roll printing process for manufacturing electronic devices via a feedforward register control logic, which compensates for and eliminates additional register errors attributable to variations in the speed of upstream printing cylinders. When used in combination with a conventional feedback register control logic, the feedforward register control logic accomplishes a register control with ultra-precision in a continuous roll-to-roll printing process, and enables implementation of a continuous roll-to-roll printing process for manufacturing electronic devices, for which a roll-to-roll printing process was formerly unavailable.

Abstract: A system and a method for mass production of Dye-Sensitized Solar Cells at low cost via a continuous roll-to-roll process. While a flexible conductive substrate is constantly in transit on a conveyor, a titanium dioxide (TiO2) layer is: formed by spray printing; sintered; dyed in a dye tank, with or without immersion, by a dye solution sprayed from nozzles while the substrate moves along a conveyor line configured as multiple alternating U-shaped lines; washed and dried; loaded with a gel-type electrolyte by roll-type printing; and covered and pressure-sealed by another flexible conductive substrate, aided by preloaded sealants. The dye solution in the dye tank may be re-circulated, during which process, the temperature, level, concentration of the dye solution may be adjusted and controlled. The roll-to-roll production process may further include erecting anti-leakage walls and leveling the electrolyte layer for preventing post-sealing leakage of the electrolyte.

Abstract: A method and apparatus for high-speed roll-to-roll printing, ensuring high-precision printing previously available only under a static condition. In the present invention, a pattern mask is wound on a print roll, and an ink injector and the roll are configured to maintain a substantially zero linear speed difference between the pattern mask and a print substrate at the moment the ink injector injects ink onto the print substrate through a perforated pattern in the pattern mask. The ink injector may be mounted on the print roll, may rotate separately from the rotating roll with a different rotational speed and direction, and may axially move to ensure no relative movement existing between the pattern mask and the substrate at the moment of printing. The roll may move linearly in the same direction as the substrate. A position sensor may be employed for more precise alignment between substrates in a multilayer printing.

Abstract: Disclosed are a roll-to-roll printing system and method in which a large number of micro-nozzles are formed directly in a printing roll, and thus ink supplied to the central portion of the roll can be formed into micro-inkjets by inducing an electrostatic field, and furthermore, as a result of the formation of the micro-inkjets, a micro-sized pattern significantly smaller than that achievable by a prior pattern formation method can be printed on a print medium, and in addition, the relative speed of the print medium relative to the roll can be maintained at a speed close to “0” so as to improve the resolution, integration density and precision of the printed pattern. According to the present invention, a large amount of micro-nozzles are formed directly in a printing roll, and thus ink supplied to the central portion of the roll can be formed into micro-inkjets by inducing an electrostatic field.

Abstract: A method of producing an electronic device by a roll-to-roll printing process using matching logic, and a method of producing a RFID (radio frequency identification) tag.

Abstract: The present invention relates, in general, to a continuous roll-to-roll printing method for manufacturing electronic devices, and, more particularly, to an ultra-precision register control method in a continuous roll-to-roll printing process for manufacturing electronic devices, which compensates for register errors attributable to variations in the speed of upstream printing cylinders by using a feedforward control logic, thus eliminating additional register errors. The ultra-precision register control method in a continuous roll-to-roll printing process for manufacturing electronic devices, register errors, attributable to variations in speed of upstream printing cylinders are compensated for using feedforward control logic.

Abstract: Disclosed is a method of manufacturing electronic components, particularly, a method of manufacturing electronic components through a printing process, including simultaneously printing ceramic dielectric regions and conductive regions on a support film. The manufacturing method repeats gravure printing of a ceramic dielectric paste and a conductive paste on a support film, without the use of a ceramic green sheet, thus rapidly fabricating a mother laminate for manufacturing desired electronic components.

Abstract: According to the disclosed is a method for controlling taper tension in the winding section of a web handling system, a more stable, high-quality wound roll can be produced by stabilizing radial stress distribution and minimizing telescoping, which is the lateral displacement of material in the winding section, using either hybrid taper tension control through a hybrid factor (?) or heaviside taper tension control through a heaviside factor (?), in the winding process, which is the final section of the roll-to-roll or web handling system.

Abstract: The present invention relates to a system for measuring wrinkles on a web in an R2R process. The system includes a laser generation device (100) for projecting a laser beam, emitted in a linear shape, onto a surface of a web (200), which is stopped or moving. A camera (300) captures a band of light, formed when the laser beam generated by the laser generation device (100) is projected onto the surface of the web (200), and transmitting image data of the captured light band. A measurement device (400) calculates coordinates of an arbitrary location on the web (200) on a basis of the image data transmitted from the camera (300), processes an image of the light band on a basis of the calculated coordinates, and displays the processed image. Accordingly, the results of reliable wrinkle measurement are provided for a web in an R2R process.

Abstract: A printer type paper money binding apparatus can print bundle-of-paper money information, such as a logo, the date, the money unit and the amount of money, on the binding strip, which is used to bind a bundle of paper money. A printer type paper money binding system capable of authenticating an operator and the operation method thereof can prevent an unauthorized operator from performing a printing and binding operation, thereby ensuring security in the printing and binding operation.