Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 7354733 | Method for sorting and separating living cells We disclose methods of sorting or separating mixtures of living cells (e.g., eukaryotic, prokaryotic, mammalian, pathogenic, bacterial, viral, etc.). We perform our methods by activating cell-selective photophoric labels, which photosensitize and chemically reduce a... | 04/08/2008 |
| 6770406 | Imaging element containing a polymeric benzylic blocked developer This invention relates to an imaging element comprising an imaging layer having associated therewith a compound of Structure I: wherein PUG is a residue of removing a hydrogen from | 08/03/2004 |
| 6489090 | Stabilized ascorbic acid developing compositions and methods of use A black-and-white photographic developing composition has improved stability and is more compatible with the environment when discarded. The composition includes one or more ascorbic acid developing agents and a preservative (such as a sulfite) and is ess... | 12/03/2002 |
| 6379877 | Method for developing an exposed photographic silver halide material According to this invention a developer has been disclosed having a low pH value between 9.6 and 11.0, preferably between 9.6 and 10.3, and comprising hydroquinone in an amount from 0 to less than 30 g per liter, an auxiliary developing agent, and as silv... | 04/30/2002 |
| 6110655 | Processing low silver black-and-white photographic elements with environmentally sensitive compositions Low silver black-and-white photographic elements, such as radiographic films, can be processed quickly using black-and-white developing and fixing compositions having reduced photoprocessing activity. The entire process is fairly rapid and effective despi... | 08/29/2000 |
| 6083673 | Organic/inorganic developer composition The present invention concerns an organic/inorganic developer composition comprising a regeneratable iron chelate, novel codevelopers of the phenidone type including one or more solubilizing groups that are not directly attached to the phenyl nucleus or t... | 07/04/2000 |
| 6077652 | Photographic developer and method for developing silver halide photographic light sensitive material by use thereof A photographic developer which is improved in storage stability is disclosed, comprising a developing agent represented by formula (1) and a compound represented by formula (2). ##STR1## wherein R1 are ##STR2## R2 and ... | 06/20/2000 |
| 5998112 | Developer for silver halide light sensitive photographic material and processing method by use thereof A photographic developer composition is disclosed, comprising a reductone, as a developing agent and a compound represented by the following formula (1). The reductone is a compound represented by following formula (A). The processing method by use of the... | 12/07/1999 |
| 5998110 | Photographic silver halide developer composition and process for forming photographic silver images A black-and-white aqueous alkaline photographic developer composition is described which is free of dihydroxybenzene developing agent and comprises a p-aminophenol primary developing agent and an auxiliary superadditive 3-pyrazolidone developing agent, wh... | 12/07/1999 |
| 5994040 | Processing composition for silver halide photographic light-sensitive material, developer and processing method using the same A processing composition for silver halide photographic light-sensitive material, which comprises at least one compound represented by the following formula (A), (A-I) or (A-II) and at least one compound represented by the following formula (B): ##ST... | 11/30/1999 |
| 5972584 | Auxiliary development agents photographic materials incorporating them and the use thereof A class of pyrazolidone compounds suitable for use as electron transfer agents in photographic development comprises pyrazolidones substituted in the 1-position by an aromatic group that is substituted in the ortho, meta or para position by --O--CO--R, wh... | 10/26/1999 |
| 5962200 | Color developing agent, processing composition and color image-forming method A method for forming a color image comprising developing an image-wise exposed silver halide color photographic photosensitive material in the presence of certain 6-aminotetrahydroquinoline color developing compounds or analogues thereof. A rapid process ... | 10/05/1999 |
| 5942379 | 3-pyrazolidone compounds and photographic developer solutions containing same The present concerns compounds of the 3-pryazolidone type comprising solubilizing groups which are not directly attached to the phenyl ring or to the pyrazolidino ring. These compounds can be used as co-developing agents in the development of black and wh... | 08/24/1999 |
| 5869218 | Image formation process Disclosed are an image formation process which comprises developing a photographic material comprising a silver halide emulsion layer, and a hydrazine derivative and a specific phosphonium compound of formula (1) with a developer which is substantially fr... | 02/09/1999 |
| 5840472 | Developer for silver halide photographic photosensitive material A developer for a silver halide photographic photosensitive material containing at least one of monocyclic dimercaptotriazine compounds, bis-type dimercaptotriazine compounds, mercapto-1,2,4-triazine compounds and dimercaptopyrimidine compounds, and a pro... | 11/24/1998 |
| 5837434 | Photographic developers containing a developing agent of the ascorbic acid type and an accelerator The invention concerns a developer solution for processing silver halide photographic products. This developer solution contains an ascorbic acid developing agent, a auxiliary developing agent which is a substituted phenidone and a development accelerator... | 11/17/1998 |
| 5834171 | Solid processing composition for silver halide photographic light sensitive material A solid processing composition for developing a silver halide black-and-white photographic light sensitive material containing a compound represented by the following formula as a developing agent, in which a metabisulfite, or the metabisulfite and a sulf... | 11/10/1998 |
| 5830618 | Silver halide photographic material A silver halide photographic material is provided which comprises a support having thereon at least one light-sensitive silver halide emulsion layer wherein said light-sensitive layer or another hydrophilic colloidal layer provided on the support contains... | 11/03/1998 |
| 5824458 | Developer and fixing solution for silver halide photographic material and processing method using the same A one-part liquid developer for a black and white silver halide photographic material, comprising: i) an ascorbic acid or derivative thereof as a developing agent, ii) an auxiliary developing agent having super-additivity, iii) an alkali agent necessary for giving ... | 10/20/1998 |
| 5821040 | Method for developing silver haide photographic material Disclosed is a method for developing a silver halide photographic material, which comprises processing the silver halide photographic material having at least one silver halide emulsion layer containing silver halide grains, with a substantially hydroquin... | 10/13/1998 |
| 5821041 | Liquid developer for photographic silver halide photosensitive material and development method The invention provides a liquid developer for photographic silver halide photosensitive material comprising a silver halide emulsion layer containing at least 50% based on the projected area of tabular silver halide grains with an aspect ratio of at least... | 10/13/1998 |
| 5804358 | Developing composition for silver halide photographic light sensitive material A solid developing composition for a silver halide black-and-white photographic light sensitive material is disclosed, comprising a developing agent selected from the group consisting of a dihydroxybenzene compound and a compound represented by formula (A... | 09/08/1998 |
| 5773203 | 4-(N,N-dialkylamino)aniline compounds, photographic processing composition containing the same and color image-forming method Disclosed are 4-(N,N-dialkylamino)aniline compounds having a 4-N substituent which is a polyethyleneoxy group and which forms a condensed ring with benzene ring, such as aniline compounds having the following structure, a processing composition containing... | 06/30/1998 |
| 5770351 | Processing of monochrome photographic silver halide print material There is described a method of processing silver halide photographic material in a processing machine using a developing solution which comprises either a hydroquinone type developing agent or a reductone type developing agent, together with an electron t... | 06/23/1998 |
| 5766833 | Process of forming super high-contrast negative images and silver halide photographic material and developer being used therefor An image-forming process developing a previously image-exposed silver halide photographic material with an alkaline developer containing a reductone compound as a main developing agent in the presence of a 1,2,5-thiadiazole compound and/or a 2,1,3-benzoth... | 06/16/1998 |
| 5766832 | Solid developer-replenishing composition for processing silver halide photographic light sensitive material A solid processing composition in the form of granules or a tablet for use as a replenisher of a developer for processing a silver halide black-and-white photographic light sensitive material is disclosed, wherein the solid processing composition is subst... | 06/16/1998 |
| 5756271 | Weakly alkaline ascorbic acid developing composition, processing kit and method using same A black-and-white developing composition includes as ascorbic acid developing agent, an auxiliary super-additive developing agent, borate buffer and a preservative. The composition pH is from 7 but less than 9. The composition can be formulated from two s... | 05/26/1998 |
| 5753408 | Method for making an offset printing plate according to the silver salt diffusion transfer process The present invention provides a method for making an offset printing plate according to the silver salt diffusion transfer process comprising the steps of: image-wise exposing an imaging element comprising in the order given on a hydrophilic surface of a... | 05/19/1998 |
| 5747229 | Solid developing composition for processing silver halide photographic light-sensitive material and processing method employing the same A solid developing composition for processing a silver halide photographic light sensitive material is disclosed which contains a compound represented by the following formula (1) and a compound represented by the following formula (2): formula (1) #... | 05/05/1998 |
| 5738979 | Black-and-white development processing method with replenishment A photographic silver halide element, such as a radiographic film, can be developed using a black-and-white developing solution containing an ascorbic acid developing agent. This solution is replenished with a replenisher solution of basically the same co... | 04/14/1998 |
| 5733703 | Imaging element and method for making a lithographic printing plate according to the silver salt diffusion transfer process The present invention provides an imaging element comprising on a support in the order given a photosensitive layer comprising a silver halide emulsion and an image receiving layer containing physical development nuclei in water permeable relationship wit... | 03/31/1998 |
| 5721094 | Method for processing silver halide photographic light-sensitive material 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 contai... | 02/24/1998 |
| 5712081 | Method for reproducing an electronically stored medical image on a hardcopy material A method of reproducing an electronically stored medical image on a hardcopy material is disclosed, said material comprising a support and on only one side thereof a silver halide emulsion layer and a hydrophilic colloid layer, wherein said emulsion layer... | 01/27/1998 |
| 5707786 | Processing of color photographic silver halide materials By means of a development intensification process for processing color photographic silver halide materials, the silver halide emulsions of which contain more than 90 mol. % of AgCl and less than 0.8 g of silver halide per m2 (stated as the equ... | 01/13/1998 |
| 5707790 | Developing composition for silver halide photographic light-sensitive material 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##... | 01/13/1998 |
| 5702875 | Weakly alkaline ascorbic acid developing composition, processing kit and method using same A black-and-white developing composition includes as ascorbic acid developing agent, an auxiliary super-additive developing agent, borate buffer and a preservative. The composition pH is from 7 but less than 9. The composition can be formulated from two s... | 12/30/1997 |
| 5683854 | Process of forming super high-contrast negative images and silver halide photographic material and developer being used therefor An image-forming process developing a previously image-exposed silver halide photographic material with an alkaline developer containing a reductone compound as a main developing agent in the presence of a 1,2,5-thiadiazole compound and/or a 2,1,3-benzoth... | 11/04/1997 |
| 5648205 | Processing method for silver halide photographic material A processing method for a silver halide photographic material is described, which comprises developing an exposed silver halide photographic material with a developing solution comprising: (a) an ascorbic acid developing agent, (b) an auxiliary developing agen... | 07/15/1997 |
| 5618652 | Image formation method by silver salt diffusion transfer An image formation method by silver salt diffusion transfer is described, which comprises subjecting a photosensitive element containing at least one photosensitive silver halide emulsion layer to image exposure, then developing the photosensitive element... | 04/08/1997 |
| 5607811 | Method for making a lithographic printing plate using ascorbic acid developer The present invention provides a method for making a lithographic printing plate according to the silver salt diffusion transfer process comprising the steps of: image-wise exposing an imaging element comprising on a support in the order given a photosens... | 03/04/1997 |
