Patent ID: 11878519
Assignee: SEMES CO., LTD.
Field: Textile and paper machines (Mechanical engineering)
Classification: CPC B | IPC B

Claim 14:
15. A printing method comprising:
positioning an object on a stage; and
performing printing on the object by a printing unit provided above the stage, and
further comprising: performing a correction for printing on at least one of the object, the stage, and the printing unit based on preset printing conditions,
wherein the printing unit includes a head frame provided above the stage, a detection sensor configured to detect a distance between the head frame and a part positioned thereunder, and a head part provided on the head frame to perform printing on the object,
the object is floated on the stage,
the stage includes a head part detection sensor configured to detect a distance to a stage-side head part,
the head part includes an object-side head part positioned to face the object and the stage-side head part positioned to face the stage,
the printing conditions include a first condition including a first distance value, which is a distance value between the object and the stage, a second condition including a second distance value, which is a distance value between the object-side head part and the object, a third condition including a third distance value, which is a distance value between the stage-side head part and the stage, and a first derivation condition in which the second condition is derived to correspond to a difference between the third condition and the first condition,
the correction includes a first correction performing a measurement and position correction of the second condition based on the first derivation condition,
the detection sensor includes a stage detection sensor provided on a lower portion of the head frame and configured to detect a distance to the stage and an object detection sensor provided on the lower portion of the head frame and configured to detect a distance to the object,
the printing conditions include a fourth condition including a fourth distance value, which is a distance value between the stage detection sensor and the stage, and a fifth condition including a fifth distance value, which is a distance value between the object detection sensor and the object,
the object-side head part and the stage-side head part include a second derivation condition in which a lower distance value, which is a distance with the object positioned thereunder, is derived based on at least one of the fourth condition and the fifth condition,
the correction includes a second correction correcting the lower distance value based on the second derivation condition in order to set the flatness of the printing unit,
the printing conditions further include a real-time fourth condition in which the fourth condition is measured in real time,
the head part and the object are maintained at a distance set therebetween based on the real-time fourth condition, and
the printing unit and the stage are installed so that at least one of the printing unit and the stage is vertically movable and are movable toward each other, and interlocked when at least the fourth condition among the printing conditions belongs to a preset range.