Patent ID: 6273784
Filing Date: 2001-08-14
Classification: B24B,B24D

Abstract:
A surface treatment method for a support of a lithographic plate, wherein a graining brush rubs a surface of the support with abrasive slurry to thereby grain the surface of the support, the surface treatment method comprising at least one of the steps of:moving at least one of the graining brush and the support periodically in a direction perpendicular to a transporting direction of the support, thereby making the entire graining brush uniformly come into contact with the support; andturning at least one of the graining brush and the transporting direction of the support such that the graining brush is placed obliquely against the transporting direction of the support, thereby making the entire graining brush come into contact with the support;the surface treatment method further comprising at least one of the steps of:if the at least one of the graining brush and the support is moved in the direction perpendicular to the transporting direction of the support, adjusting an amount of the movement in accordance with a width of the support; andif at least one of the graining brush and the transporting direction of the support is turned, adjusting an amount of the turning in accordance with the width of the support.