Printing apparatus and method for measuring and compensating for synchronization error
AssigneeKorea Institute of Machinery & Materials
InventorsDong Woo KANG, Taik Min Lee, In Young Kim, Young Man Choi, Seung-Hyun Lee, Deok Kyun Yoon
Life of this patent
Estimating the term…
Abstract
The present invention relates to a printing apparatus and method for measuring and compensating for a synchronization error and the present invention has been made in an effort to provide a printing apparatus and method for measuring and compensating for a synchronization error, which may compensate for the synchronization error between a roll and a substrate support part occurring due to a deformation, and the like which is caused by a printing pressure of the roll at the time of electronic printing.
Claims23
A printing apparatus for measuring and compensating for a synchronization error, comprising:
- a rotating part 110 configured to include a roll 111 of which the surface is made of a flexible material and a motor 112 rotating the roll 111;
- a support part 120 having a substrate 500 disposed on an upper portion thereof to support the substrate 500 and formed to relatively move in a direction parallel with a tangential direction of the rotating part 110 and the roll 111;
- a printing pressure part 130 formed to provide adhesion and printing pressure of the roll 111 to the substrate 500 by changing an interval between the rotating part 110 and the support part 120;
- and
- a compensation unit 140 configured to include a sensor unit 141 which is disposed on a lower portion of the substrate 500 to measure forces which are applied between the roll 111 and the substrate 500 at a contact position between the roll 111 and the substrate 500 and a control unit 142 which performs a control to compensate for the synchronization error by using values of forces measured by the sensor unit 141.
A printing method for measuring and compensating for a synchronization error using a printing apparatus 100
- configured to include a rotating part 110 including a roll 111 and a motor 112, a support part 120 having a substrate 500 disposed on an upper portion thereof to support the substrate 500, a printing pressure part 130 changing an interval between the rotating part 110 and the support part 120, and a compensation unit 140 including a sensor unit 141 which is disposed on a lower portion of the substrate 500 to measure a force in at least one direction applied in a tangential direction of the roll 111 among forces which are applied between the roll 111 and the substrate 500 at a contact position between the roll 111 and the substrate 500 and a control unit 142 which controls at least one selected from a rotating velocity (ω) of the motor 112 and a relative movement velocity (V) between the rotating part 110 and the support part 120 to compensate for the synchronization error using a value of the force measured by the sensor unit 141, the printing method comprising:
- performing a feedback control on at least one selected from the rotating velocity (ω) of the motor 112 and the relative movement velocity (V) between the rotating part 110 and the support part 120 so that the force applied in the tangential direction of the roll 111 becomes 0.
Dependencies are inferred from the claim text.