摘要:
A method of enabling reuse of photographic processing waste solutions with ease at low cost without discharging effluents in a substantial sense, and a photographic processing agent regenerated by such a method are provided, which is a method of reusing a photographic processing waste solution, in which a solidified matter is prepared from the photographic processing waste solution by a dry-solidification according to a thin film concentration method without removing ingredients accumulated during a processing, the solidified matter is formed into granules, and the granules is reused as a solid photographic processing agent: and a regenerated processing agent prepared by the aforesaid method.
摘要:
The present invention relates to an apparatus for putting into contact a defined quantity of treatment material with an aqueous solution to be treated. The apparatus comprises at least one medium permeable to the aqueous solution to be treated in which the treatment material is placed. The medium is made of polyester foam and has the form of a closed envelope. The treatment material present in the at least one medium is a material for trapping a compound to be eliminated from the solution.
摘要:
An imagesetting system includes: an imagesetter for photographically recording an image onto media; a wet chemical processor, proximately positioned adjacent to the imagesetter, for receiving and processing the imaged media, and a light-tight control wedge box containing a test strip to be processed by the wet chemical processor, without physically separating the imagesetter and the processor, to indicate whether chemicals in the wet chemical processor are depleted below a level of effectiveness. The imagesetting system operates in a test mode to determine whether chemicals in the processor are depleted below the level of effectiveness. The test mode method includes the steps of: stopping the imagesetter from photographically recording an image onto the media and stopping the imagesetter from transferring media to the processor; installing the control wedge box into the imagesetting system without physically separating the imagesetter and processor; and running a sequence of operations to extract the test strip from the control wedge box and to transfer the test strip through the processor to determine whether chemicals within the processor are depleted below the level of effectiveness.
摘要:
A method for processing exposed silver-based photographic material comprises passing the exposed material through a bath of developer liquid and subsequently through a bath of fixer liquid. Silver from used fixer liquid is recovered by electrolysis. The fractional image exposure of exposed material to be processed in a coming period and the amount-of silver recovered by electrolysis in a preceding period are measured. The used fixer liquid is periodically regenerated by the addition of fresh fixer thereto. The quantity of fresh fixer to be added is calculated as a function of the measured fractional image exposure and as a function of the measured amount of recovered silver. The quality of the fixer is thereby maintained at an optimum level while keeping the quantity of fresh fixer which is used to a minimum.
摘要:
A method is disclosed of processing in a processor an image-wise exposed black-and-white light-sensitive silver halide photographic material comprising the steps of developing in a developing solution and fixing in a fixer solution, characterized in that upon starting of the processing the said fixer solution comprises a mixture of a fixer starter solution and a fixer replenisher solution, in that said fixer solution is replenished with the said fixer replenishing solution and in that the said fixer starter solution is a developing solution.
摘要:
The present invention concerns a process for treating photographic baths containing organic contaminants and a device for implementing this method.The process for treating a photographic bath containing contaminants comprises the step of putting the photographic bath in contact with a photographically inert material, resistant to a high pH and having a lipophilic surface.This method affords an improvement in the processing of photographic products.
摘要:
A process for the development of photographic materials comprises developing the materials in a bath of developer processing solution and subjecting the used developer solution to a water recovery step comprising distillation or reverse osmosis and using the recovered water to prepare a photographic processing solution or as a compensator for evaporation loss and wherein said used developer solution passed to the water recovery step is free of contaminants such as ammonia or sulphur dioxide present in bleaching and fixing agents. Preferably the used developer solution is subjected to the water recovery without the addition of other photographic processing liquids. The recovered water may be used to prepare developer solution or developer replenisher solution and recycled to the developer processing bath. The invention includes an apparatus for the development of photographic materials and recycling water from the used developer solution which comprises a first tank (2) for holding developer processing solution, a second tank (4) for holding replenisher solution and connected to the first tank (2) so that replenisher solution may be fed thereto, a third tank (10) connected to the first tank (6) for receiving displaced developer solution, characterized in that distillation means (13,14) are provided for recovering water from the displaced solution and means (12) are provided for recycling the distilled water.
摘要:
A method of processing an exposed silver halide photographic light sensitive material is disclosed which comprises the steps of: developing the exposed material with developer, the developer being replenished with developer replenisher and the developer containing no dihydroxy benzene and containing a developing agent represented by the following Formula �1!: ##STR1## wherein R.sub.1 and R.sub.2 independently represent an alkyl group, an amino group, an alkoxy group or an alkylthio group, or R.sub.1 and R.sub.2 combine with each other to form a ring, k represents 0 or 1, and X represents --CO-- or --CS--; fixing the developed material; stabilizing the fixed material with a washing water which is replenished with water replenisher in a replenishing amount of 0.5 to 2 liter/m.sup.2 or with a rinsing solution which is replenished with a rinsing replenisher in a replenishing amount of 0 to 2 liter/m.sup.2 ; and drying the stabilized material.
摘要:
The present invention relates to a treatment method for treating effluents from a photographic development process, particularly a redox amplification (RX) development process, which is operated at an alkaline pH and is buffered with a phosphate buffer, said treatment method being characterized by the addition to the effluents of a Group II or Group III metal cation which forms an aqueous insoluble or substantially insoluble phosphate salt, thereby to precipitate phosphate salt from the effluent, and to reduce the pH of the effluent.
摘要:
A developing composition for a silver halide black-and-white photographic light sensitive material is disclosed, comprising a compound represented by formula (1) and a compound represented by formula (2) or (3): ##STR1##