DIRECT POSITIVE IMAGE FORMING DEVICE

DIRECT POSITIVE IMAGE FORMING DEVICE

PURPOSE:To form a direct positive image having the high max. image density and the low min. image density by executing development processing in the presence of at least one kind of specific compds. and at least one kind of other specific compds. CONSTITUTION:The development processing is executed i...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: OOKI NOBUTAKA, NAGAOKA SATOSHI, KOJIMA TETSUO
Format: Patent
Sprache:eng
Schlagworte:
AUXILIARY PROCESSES IN PHOTOGRAPHY
CINEMATOGRAPHY
ELECTROGRAPHY
HOLOGRAPHY
PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR,STEREO-PHOTOGRAPHIC PROCESSES
PHOTOGRAPHY
PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES
PHYSICS
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Beschreibung
Zusammenfassung:PURPOSE:To form a direct positive image having the high max. image density and the low min. image density by executing development processing in the presence of at least one kind of specific compds. and at least one kind of other specific compds. CONSTITUTION:The development processing is executed in the co-presence of at least one kind of the compds. expressed by formula I or II and at least one kind of the compds. expressed by formula III or IV. In formulas I, II, Q denotes the atom group necessary for forming a 5- or 6-membered heterocycle; Q' denotes an atom group necessary for forming the 5- or 6-membered heterocycle. In formula III, IV, R1 to R4 denote a hydrogen atom or