Patent ID: 7362523

Claim:
A method for producing a holographic recording medium having a holographic recording layer between a first substrate and a second substrate comprising the steps, conducted sequentially in the following order, of: holding the first substrate on a first surface of a first substrate holding member and the second substrate on a second surface of a second substrate holding member respectively, wherein the first surface and the second surface are provided with suction openings respectively; reducing a pressure between the first substrate and the first surface of the first substrate holding member through the suction openings on the first surface and a pressure between the second substrate and the second surface of the second substrate holding member through the suction openings on the second surface respectively so that the first substrate is brought in close contact with the first surface and the second substrate is brought in close contact with the second surface; forming a space between the first substrate and the second substrate with at least one opening through which a holographic recording layer forming composition is charged into the space on the condition of holding the first substrate and the second substrate so that the designated distance is retained between the substrates, charging the holographic recording layer forming composition into the space through the at least one opening to form the holographic recording layer, and hardening the holographic recording layer by at least one of heat and light.