Aluminum support for lithographic printing plate and production method thereof

A method for producing an aluminum support for a lithographic printing plate, comprising subjecting an aluminum plate:

• (1) to surface graining,
• (2) to polishing,
• (3) to surface graining,
• (4) to or not to polishing, and
• (5) to anodization in this order.

A method for producing an aluminum support for a lithographic printing plate, comprising subjecting an aluminum plate:

• (1) to polishing,
• (2) to surface graining,
• (3) to or not to polishing, and
• (4) to anodization in this order.

A method for producing an aluminum support for a lithographic printing plate, comprising subjecting an aluminum plate:

• (1) to chemical etching or electrolytic polishing,
• (2) to preliminary electrochemical surface graining of from 1 to 300 C/dm2 using an alternating current in an aqueous solution mainly comprising hydrochloric acid,
• (3) to chemical etching of from 0.1 to 1.0 g/m2 in an aqueous alkali solution,
• (4) to electrochemical surface graining,
• (5) to chemical etching or electrolytic polishing,
• (6) to polishing, and
• (7) to anodization in this order.

A method for producing an aluminum support for a lithographic printing plate, comprising subjecting an aluminum plate:

• (1) to mechanical surface graining,
• (2) to chemical etching or electrolytic polishing,
• (3) to electrochemical surface graining,
• (4) to chemical etching or electrolytic polishing,
• (5) to polishing, and
• (6) to anodization in this order.

A method for producing an aluminum support for a lithographic printing plate, comprising subjecting an aluminum plate:

• (1) to mechanical surface graining,
• (2) to chemical etching or electrolytic polishing,
• (3) to preliminary electrochemical surface graining of from 1 to 300 C/dm2 using an alternating current in an aqueous solution mainly comprising hydrochloric acid,
• (4) to chemical etching of from 0.1 to 1.0 g/m2 in an aqueous alkali solution,
• (5) to electrochemical surface graining,
• (6) to chemical etching or electrolytic polishing,
• (7) to polishing, and
• (8) to anodization in this order.