Gas separation: apparatus – Electric field separation apparatus – Plural diverse electric fields
Patent
1975-02-05
1976-12-07
Bowers, Jr., Charles L.
Gas separation: apparatus
Electric field separation apparatus
Plural diverse electric fields
96 13, 96 49, 96 83, 96 91R, G03C 160, G03C 178
Patent
active
039960560
ABSTRACT:
Plastic pigment spheric particles which form a matrix for diazotype reproduction materials are applied to a base sheet. Whether the diazo sensitizing solution is included in admixture with spheric plastic pigment particles or is applied thereafter as a second coating, a matrix is formed having a sensitized diazo layer dispersed throughout. Such diazo matrices permit control of contrast ratios over a wide range. Also such diazo matrices are transferable. The diazo matrix image can be made water fast by an after treatment by means of a solvent. Such a matrix lends itself to the heat development process by retaining the heat generated development agents within the matrix due to its thermoplastic character. In another aspect of the invention multi-color diazo reproduction on a single base sheet employing consecutive overcoatings of the matrix and diazo sensitizing solution after each development can be achieved.
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Andrews Paper & Chemical Co.
Bowers Jr. Charles L.
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