Eastman-Kodak Company

Paul B Condit

Jerald C Hinshaw

Geraldine Ann Pelanek

Gerald C Hinshaw

Arthur David Kuh

A transportable medical image storage medium includes a recordable optical compact disk. The compact disk has a first storage area which records a plurality of substantially losslessly compressed digital medical images and a second storage area which records a plurality of lossy compressed digital medical images corresponding to said losslessly compressed medical images. Where a case study or set of medical images is of such a length that more than one CD is required to record all of the losslessly compressed digital medical images, each CD records the entire set of lossy compressed digital medical images.

Medical image archiving with lossy images on two or more recordable CDs

Novel photographic dye release compounds have the structure: ##STR1## wherein R.sup.1 is an aromatic group containing 5-7 members in the ring to which Nu and E are attached; R.sup.2 and R.sup.3 are bivalent organic groups containing from 1-3 atoms in the bivalent linkage which are alkylene, oxyalkylene or thiaalkylene; Nu is a nucleophilic group which is a hydrazine, an hydroxyamino, an hydroxy, a sulfonamido, a primary amino or alkali-labile precursors for said nucleophilic groups; E is an electrophilic group which is a carbonyl or a sulfonyl; Q is a bivalent group providing a mono atom linkage between E and X.sub.2 and is amino providing a mono atom nitrogen linkage, an oxygen atom, a sulfur atom or a selenium atom, provided that Nu and E are positioned on a ring of said aromatic group to provide for intramolecular formation of a 5- to 7-membered ring between Nu and E displacing Q--X.sub.2 from E; one of X.sup.1 or Q--X.sub.2 is a ballasting group containing at least 8 carbon atoms, which ballasting group is of a size sufficient to render said compound immobile in an alkaline solution-permeable layer of a photographic element; one of X.sup.1 or Q--X.sub.2 is an azo dye, an azomethine dye; an anthraquinone dye, an alizarin dye, a merocyanine dye, a quinoline dye or a cyanine dye; and n and m are integers of 1 or 2.

Positive-working immobile intramolecular nucleophilic displacement

Photographic elements, processes for forming images in photographic elements and new compounds are disclosed. Generally, the invention relates to immobile compounds which can be used to provide positive images from negative recording-developing photographic materials such as negative silver halide emulsions. The compounds contain a photographically useful group such as a dye or dye precursor and are capable of releasing said photographically useful group under alkaline conditions, and are also capable of reaction with an oxidized silver halide developing agent before substantial release of said photographically useful group occurs, to provide a reaction product having a substantially lower rate of release of said photograhically useful group.

Positive-working immobile photographic compounds and photographic

Photographic elements, processes for forming images in photographic elements and new compounds are disclosed. Generally, the invention relates to improved immobile compounds which can be used to provide positive images from negative recording-developing photographic materials such as negative silver halide emulsions. The compounds contain a photographically useful group such as a dye or dye precursor and are capable of releasing said photographically useful group under alkaline conditions, and are also capable of reaction with an oxidized silver halide developing agent before substantial release of said photographically useful group occurs, to provide a reaction product having a substantially lower rate of release of said photographically useful group.

Improved dye densities are obtained in color image transfer assemblages employing internal image emulsions, ballasted redox dye releasers and an alkaline processing composition containing a saturated, aliphatic or alicyclic glycol having from 3 to 10 carbon atoms or a saturated, aliphatic or alicyclic amino alcohol having from 2 to 10 carbon atoms.

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Pittsford, NY, United States of America

Paul B Condit