Defect inspection system, film manufacturing device and method, printing device and method

Abstract

The present invention relates to a defect inspection system, a film manufacturing device, a film manufacturing method, a printing device, and a printing method. The printing device (50) prints on the recording area (S) along the edge portion of the film (F105) while conveying the elongated film (F105), wherein the printing device includes: a printing head (13a) , which prints the film (F105); the snaking detection part (53), which detects the snaking of the film (F105); (F105) moves in a direction intersecting with the conveying direction, and corresponding to the meandering of the film (F105) detected by the meandering detection unit (53), the head operation unit (51) moves the printing head (13a) to the recording area (S) opposite position.

Description

technical field [0001] The present invention relates to a defect inspection system, a film manufacturing apparatus, a film manufacturing method, a printing apparatus, and a printing method. Background technique [0002] For example, optical films, such as a polarizing plate, are wound around a core material after defect inspections, such as a foreign material defect and an uneven|corrugated defect, are performed. Information about the position and type of defects (hereinafter, referred to as defect information) is recorded on the optical film by printing a barcode on the edge of the optical film and labeling the defect position. The optical film wound around the core material is separated from the optical film on the upstream side when the winding amount reaches a certain amount, and is shipped as a take-up roll. For example, Japanese Patent Laid-Open No. 2011-7779 discloses a defect inspection system including a defect inspection device and a recording device for recording...

AI Technical Summary

Problems solved by technology

[0003] However, in the defect inspection system described above, when recording defect information on the optical film, depending on the state of the optical film, transport conditions, etc., meandering may occur in the optical film during transport.

When such meandering occurs in the optical film, there is a possibility that the defect information printed by the ink discharged from the printing head cannot be recorded well in the recording area along the edge portion of the optical film, resulting in a printing error.

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