Process of producing color solid image pickup element base plates

A process of producing a color solid image pickup element base plate comprising the steps of:

• coating a solvent permeation preventing layer formed on the surface of a solid image pickup element base plate with a silver halide emulsion layer,
• removing the silver halide emulsion layer at portions corresponding to bonding pat portions of the solid image pickup element base plate to reveal the solvent permeation preventing layer at the portions,
• forming a micro color filter composed of at least two-color color separation filter elements corresponding to each image element of the solid image pickup element base plate by repeatedly applying an image exposure and a color development to the remaining silver halide emulsion layer for each color,
• forming a protective layer on the whole surface of the solid image pickup element base plate having the micro color filter thus formed thereon, and
• removing the protective layer and the solvent permeation preventing layer at the portions corresponding to the bonding pat portions of the solid image pickup element base plate to reveal the bonding pat portions.