Eastman-kodak Company

Other

John D Lewis

Pranab Bagchi

Tienteh M Chen

Thomas Joseph Dannhauser

Mark A Whitson

Richard L Parton

David A Stegman

Thomas R Dobles

Teresa A Smith

Myra T Olm

Eric L Bell

Thomas D Pawlik

Robert D Wilson

Jerzy Z Mydlarz

Woodrow G McDugle, Jr

Jeffrey C Hansen

Karen J Klingman

Bruce E Kahn

The present invention relates to a parcel receptacle device that allows for securely receiving packages and transferring the packages to the interior side of a wall or door which the parcel receptacle device is attached. This device is comprised of a plurality of elements including an interior mounting plate, an exterior mounting plate, a housing and a drawer. The housing and drawer may be detached from an interior mounting plate that is affixed to the wall or door. This device also provides an auto-locking door that automatically closes when the housing and drawing are detached. Accordingly, the auto-locking door securely closes the opening in the garage door, which previously allowed the drawer to slide through. The receptacle can later be reattached by unlocking the auto-locking door and then raising it upward. Once it is raised up to a pre-determined position, the housing and drawer may then be reattached to the interior mounting plate.

Garage door parcel receptacle

A silver halide emulsion comprising radiation sensitive silver halide grains exhibiting a face centered cubic crystal lattice structure containing a hexacoordination complex of an iridium ion in which at least half of the coordination sites in the hexacoordination complex are provided by halogen or pseudohalogen ligands, and at least one coordination site is provided by a ligand comprising a azole ring containing a chalcogen atom and a nitrogen atom, wherein the azole ring is substituted at the 5-position with a halide ion. The invention provides emulsions containing with a preferred class of iridium dopants which are especially useful for improving reciprocity performance in silver halide emulsions with minimal or no impact on other aspects of photographic performance. These dopants give a superior balance of reciprocity and other photographic properties compared to other iridium dopants exemplified in the prior art.

Silver halide emulsion containing iridium dopant

A photographic element comprising at least one silver halide emulsion layer in which the silver halide has been sensitized with a first blue sensitizing dye having a .lambda..sub.1 less than or equal to about 475 nm and a second blue sensitizing dye having a .lambda..sub.2, wherein .lambda..sub.1 is longer than .lambda..sub.2 and .lambda..sub.1 and .lambda..sub.2 are separated by an energy gap, .DELTA.E, which does not exceed 0.12 eV, where .DELTA.E is defined by the following relationship: ##EQU1## wherein .lambda..sub.1 is the wavelength in nanometers (nm) of maximum absorption of a silver halide emulsion sensitized with the first dye and .lambda..sub.2 is the wavelength of maximum absorption of a silver halide emulsion sensitized with the second dye, with the proviso that neither the first nor the second dye contains selenium.

Photographic element comprising a mixture of sensitizing dyes

A photographic element comprises at least one silver halide emulsion layer in which: a) the silver halide has been spectrally sensitized with a first blue sensitizing dye having a .lambda..sub.1 less than or equal to about 475 nm and a second blue sensitizing dye having a .lambda..sub.2, wherein the following relationship is met: ##EQU1## wherein .lambda..sub.1 is the wavelength in nanometers (nm) of maximum absorption of a silver halide emulsion sensitized with the first dye and .lambda..sub.2 is the wavelength of maximum absorption of a silver halide emulsion sensitized with the second dye, with the proviso that neither the first nor the second dye contains selenium. The silver halide emulsion of said layer is chemically sensitized with a gold(I) compound and preferably with the combination of a gold compound and a disulfide compound; and b) the silver halide has been chemically sensitized with a gold compound of formula (I):

The invention describes silver halide packet emulsion grains or crystals that are conventionally precipitated using gelatin of a given isoelectric pH, surrounded by a layer of gelatin-grafted-polymer particles wherein the grafted gelatin has a different isoelectric pH and the said gelatin-grafted-polymer particles are optionally chemically bonded to the gelatin surrounding the silver halide microcrystals. Such packet emulsions can form the basis for a mixed-packet color photographic system.

Attachment of gelatin-grafted polymer particles to pre-precipitated

This invention describes the composition and method of preparation of heteroflocculated packet emulsion clusters containing a light sensitive and selectively photosensitized silver halide emulsion particles and particles of photographic agents such as dye-forming coupler particles. The silver halide emulsion particles are associated with a layer of adsorbed peptizing gelatin with an isoelectric pH of P.sub.1 and the grafted gelatin of the gelatin-grafted-polymer particles comprising the photographic agent has an isoelectric pH of P.sub.2 such that P.sub.1 is different than P.sub.2. At least one of the peptizing and grafted gelatins is an isoing gelatin which is sufficiently derivatized to remove ionic groups thereof such that approaching the isoelectric pH in an aqueous solution of the isoing gelatin causes massive heteroflocculation. Formation of packet emulsion clusters is achieved by heteroflocculation between oppositely charged silver halide particles and gelatin-grafted-latex polymer particles comprising the photographic agents by shift of the pH to within 0.5 pH units of the isoelectric pH of the isoing gelatin and at a value between the two isoelectric pH values of two different types of gelatins used. The heteroflocculated packet emulsions can be further stabilized via hardening of the gelatins surrounding the particles in the packet clusters using a concentrated gelatin hardener. Such packet emulsion clusters are suitable for use in mixed packet color photography.

Mixed packet color photographic system

Attachment of gelatin-grafted plymer particles to pre-precipitated

This invention describes the use of gelatin-grafted-polymer particles as peptizers for the preparation of silver halide photographic emulsions, whereby the gelatin-grafted-polymer particles remain attached to the AgX crystals after preparation of the emulsions. In an embodiment of this invention, the core polymer particles are loaded with photographically useful agents. When the photographic agent is a dye-forming coupler, multicolor mixed-packet systems can be constructed using the packet emulsions prepared in the manner of this invention.

Gelatin-grafted-polymer particles as peptizer for silver halide emulsions

This invention describes the use of a selenium sensitizer on a large grain size silver chloride emulsion. The process of the invention provides a large and unexpected speed increase on silver chloride emulsion crystals greater than about 0.4 micron in edge length. A photosensitive emulsion according to the invention is particularly useful as a yellow layer in a color print film.

Photographic element containing large, selenium-sensitized silver

A photo development apparatus made up of a development tank and a heater tank having an immersion heater in the heater tank. A flow means connects the development tank to the heater tank and a manifold connecting the heater tank to the development tank by means of a direction control means including a fitting directed at about 5 to 15 degrees to a radial line from opposite sides of the development tank so that an interference laminar flow is created in the development tank thereby providing agitation.

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Webster, NY, United States of America

John D Lewis