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Abstract
A method is described by which different developing agents may be compared in their effects on the modulation transfer function (MTF) at high frequencies (>200 mm-1). Measurement of the integrated density of a grating offers an alternative to holographic efficiency as an indicator of the value of the MTF.
Developers based on Metol and Phenidone are found to produce MTF values >1 at frequencies of holographic importance, whilst hydroquinone shows no marked adjacency effects. These differences are related to the degree of adsorption and lifetimes of the developer oxidation products and their inhibition or acceleration of further development.