A photosensitive resin composition is here disclosed which satisfies the
following (1) and (2): (1) when a 1.0 wt % aqueous sodium carbonate
solution is sprayed by a spray on a layer of the photosensitive resin
composition having a thickness of 37 to 42 .mu.m under the following
conditions, the photosensitive resin composition layer being able to be
removed within 20 seconds, the above conditions being that an internal
diameter of a nozzle of the spray is 1.2 mm, a spraying pressure is 0.05
MPa, and a distance between a point of the spray nozzle which is closest
to the photosensitive resin composition layer and the photosensitive
resin composition layer is 50 mm; and (2) when the 1.0 wt % aqueous
sodium carbonate solution is sprayed three times for 36 seconds under the
above conditions on a cured film obtained by laminating a layer of the
photosensitive resin composition having the above thickness on a
copper-clad laminate having 18 three-continuous holes in which 3 holes
each having a diameter of 6 mm are continuously integrated and which has
a length of 16 mm, and then photo-curing the layer with an exposure
capable of curing 24 steps in a 41-step tablet, the number of holes where
the cured film is broken being 5 or less.