Patent ID: 7255967

Claim:
An image forming method comprising: (1) forming a first negative photosensitive resin layer on a substrate; (2) forming a barrier layer on the first negative photosensitive resin layer; (3) forming a second negative photosensitive resin layer on the barrier layer; (4) exposing the substrate, on which the first and second negative photosensitive resin layers are formed, to light via a photo mask having at least two types of light transmissible patterns; and (5) developing the exposed first and second negative photosensitive resin layers, wherein a photosensitivity ratio of the first negative photosensitive resin layer to the second negative photosensitive resin layer (the first/the second) is more than 1 and wherein the image forming method further satisfies at least one of the following (i) to (iv): (i): (1), (2) and (3) comprise use of a transfer sheet, which at least includes the first negative photosensitive resin layer, the barrier layer and the second negative photosensitive resin layer formed on a light transmissible support; (ii): (1) comprises use of a transfer sheet, which at least includes a negative photosensitive resin layer formed on a light transmissible support, the (2) comprises use of a transfer sheet, which at least includes a barrier layer formed on a light transmissible support; and (3) comprises use of a transfer sheet, which at least includes a negative photosensitive resin layer formed on a light transmissible support; (iii): (1) and (2) comprise use of a transfer sheet, which at least includes a negative photosensitive resin layer and a barrier layer formed on a light transmissible support; and (3) comprises a use of a transfer sheet, which at least comprises a negative photosensitive resin layer formed on a light transmissible support; (iv): (1) comprises use of a transfer sheet, which at least includes a negative photosensitive resin layer formed on a light transmissible support; and (2) and (3) comprise use of a transfer sheet, which at least includes a barrier layer and a negative photosensitive resin layer formed on a light transmissible support.