摘要:
The present invention relates to a developer comprising a developing agent and a polyalkyleneimine antioxidant being formed by the condensation of a number of alkyleneimine units and having the following formula (I): 1 wherein R1, R2 and R3 independently represent an unsubstituted or substituted alkylene group or R2 may be H; x and y independently represent an integer from 1 to 39,999; the sum of x and y represents an integer from 10 to 40,000; and wherein the amine groups of the antioxidant have been partially oxidized with hydrogen peroxide or a compound capable of generating hydrogen peroxide, prior to the introduction of the developing agent. In a preferred embodiment, the antioxidant has been partially oxidized such that the amount of hydroxylammonium groups formed is less than half the total equivalent of the original amine before the addition of the developing agent. The developer may optionally comprise an alkaline buffer.
摘要:
A one-part photographic developing concentrate comprising: (i) a paraphenylene diamine color developing agent; and (ii) a water-soluble organic solvent, wherein a molar ratio of sodium ion to potassium ion is at least 3, and a molar ratio of sulfate ion to carbonate ion is at least 0.25.
摘要:
A method of chemically marking photosensitive material that needs to be digitally scanned and adjusted rather than optically printed to produce a satisfactory hardcopy.
摘要:
A multi-part color developing kit includes at least two parts (or solutions) of photochemical compositions that can be mixed to provide a color developing composition useful for obtaining color photographic images. A first aqueous solution is formulated with a color developing agent in free base form, an antioxidant for the color developing agent, an inorganic base, a triazinylstilbene optical brightening agent, an chemical base and a water-miscible or water-soluble hydroxy-substituted, straight-chain organic solvent. A second aqueous solution is formulated with a buffering agent, the same or different chemical base and a phosphonic acid metal ion sequestering agent. Both solutions have a pH and homogeneity to provide a clear color developing composition that is safer for use and disposal.
摘要:
Rapid development of silver bromoiodide color negative photographic films and formation of high quality negative images suitable for scanning to produce display images of excellent quality is made possible by a novel developer solution composition and method of development. The solution is characterized by containing, in addition to the color developer compound and conventional photographic developer solution components, a water soluble pyrrolidone polymer, a high concentration of sulfite ion and a low concentration, or the absence of, bromide ion. In the novel method the developer composition contacts the exposed film at elevated temperature, e.g., 40 to 66null C., for a short development time, e.g., 20 to 90 seconds. The developed image has image quality suitable for scanning and digital manipulation to produce a digital record for forming a color display image of high quality.
摘要:
A concentrated composition of a color developer replenisher for a silver halide color photographic material, the composition comprising a single solution, wherein the solution comprises 0.14 mol/liter or more of a p-phenylenediamine color developing agent, the solution has a specific gravity of 1.2 or more, the solution has pH of 13.3 or more, the solution comprises from 0.2 to 1 mol/liter of at least one compound selected from benzenesulfonic acids which may be substituted with an alkyl group, and lactams, and the solution comprises substantially no alkanolamine.
摘要:
A method for deriving a color negative film developer composition and processing conditions for developing a photographic film image which is optimized for subsequent digital scanning and digital image file manipulation, which allows for optimum rapid development processing of the film is disclosed. The process includes identifying at least one independent variable that has a first order effect on the density of at least one of the red, green, and blue dye images of the developed image, selecting a desired range of values for the independent variables identified, formulating an experimental design that includes desired independent variables over the desired range of values, performing the experiment to obtain statistically significant values for desired dependent variables, applying the values to a mathematical model capable of providing a formula for optimizing responses to the dependent variables, and using the formula to identify desired optimal developer composition and processing conditions resulting in an developed image in which the subsequent required digital scanning and digital image file manipulation is reduced. Also disclosed is a method for providing a color display image including developing an imagewise exposed color silver halide negative working film having at least two color records, with a color developer solution composition and under development process conditions derived in accordance with the above process, scanning the developed film to form density representative signals for the at least two color records, and digitally manipulating the density representative signals thus formed to correct either or both interimage interaction and gamma mismatches among said at least two color records to produce a digital record providing a display image having desired aim color and tone scale reproduction, such that the digital manipulation is minimized.
摘要:
A stabilized p-phenylenediamine color developer solution having about 10 to 40 weight percent of a p-phenylenediamine free base color developer, about 40 to 70 weight percent of a hydroxy-containing organic solvent for the p-phenylenediamine free base color developer, and about 1 to 40 weight percent of a preservative for the p-phenylenediamine free base color developer, wherein the weight percentages are based on the total weight of the stabilized solution. Another aspect are processes for making stabilized p-phenylenediamine color developer solutions. Another embodiment is a p-phenylenediamine color developer solid having from 50 to about 99 weight percent of a p-phenylenediamine free base color developer, and from about 1 to 50 weight percent of a preservative for the p-phenylenediamine free base color developer, wherein the weight percentages are based on the total weight of the composition. Another aspect is a process for making the stabilized solid p-phenylenediamine color developer.
摘要:
A method of developing a latent image on a photographic element (such as imagewise exposed photographic film) by absorbing a dye precursor into the film, applying a developer solution to the film to develop the latent image and form a dye in the film, scanning the film with light, and detecting at least one of light reflected away from and light transmitted through the film.
摘要:
A single-part colour developing concentrate with a pH greater than or equal to 7 which contains at least 0.02 mol of a colour developer substance and at least 0.015 mol of an antioxidant per litre, characterised in that the concentrate contains 0.05 to 35 g per litre of a wetting agent soluble in water in this amount, is distinguished by very good stability in storage at low temperatures and the discharge behaviour from the concentrate bottle is considerably improved and soiling of the processing equipment is avoided. Furthermore, the optical brightener precipitation occurring in practice in the bleach fixing bath is also prevented.