FIELD: paper carrier preservation methods. SUBSTANCE: method involves exposing paper to induced low-frequency electric field generated by sequence of transmitted harmonic oscillations with envelope formed as rectangular pulses or by sequence of bipolar pulses with constant pulse amplitude or harmonic oscillation envelope, frequency of sequence and duration in the process of single continuous action. EFFECT: increased efficiency, improved quality of paper information carriers. 3 cl
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Authors
Dates
1997-12-27—Published
1996-06-07—Filed