A photosensitive composition comprising a resin containing a repeating unit corresponding to a monomer having a structure represented by formula defined in the specification, and a negative working lithographic printing plate having a negative working photosensitive layer comprising the above-described photosensitive composition. Light-controlled elektrokinetic assembly of particles near surfaces relies on the combination of three functional elements. A subtle opening and closing of two levels of paper at the fold where two perfs occur, induced by mouse pressure, endows the working ply surface with a flexibility of vertical movement, creating a subtle mouse buoyancy. A high pressure oil reservoir is at least partially defined by the plunger and the lifter body closed end, and is in one-way fluid communication with the low pressure oil reservoir, whereby oil is received into the high pressure reservoir from the low pressure oil reservoir.