Polaroid Corporation

Zink Imaging, Inc.

Other

Richard M Allen

Stephen J Telfer

Michael P Filosa

John L Marshall

John M Hardin

Peter K Chu

Mark R Mischke

Donald A McGowan

Socorro M Ramos

John W Lee

John Charles Warner

Jeff C Potts

Justin R Whitfield

Jeffery A Gladding

There are described thermal imaging members and thermal imaging methods utilizing unsymmetrical rhodamine compounds. The rhodamine color-forming compounds exhibit a first color when in a crystalline form and a second color, different from the first color, when in an amorphous form.

Thermal imaging members and methods

There are described novel complexes formed between hydrogen bond acceptors and phenolic dye compounds and imaging members and imaging methods, including thermal imaging members and methods utilizing the complexes.

Dye complexes and use thereof in imaging members and methods

A camera mounting assembly for a weapon is provided. The mounting assembly includes a mount for direct attachment to the weapon. A parallelogram linkage includes a pair of depending swing arms, each of which is pivotally secured at one end in the mount and at the opposite end in a camera support. The support also includes a transverse slot for receiving a stud or other mount carried by a camera. When the weapon is discharged, the swing arms allow the camera and support to together swing to and fro in response to the forces generated. During this swinging motion, the support and hence the camera are both maintained substantially aligned with the line-of-sight of the weapon at all times, thereby ensuring that the shoot is reliably captured. Dampers may also be provided to dampen the swinging motion of the camera created upon discharge. The combination of the swinging and damping improves the capture of the shoot by reducing the effects of the recoil or discharge forces. Also, since the camera is not in direct contact with the weapon, the potential for shock damage is significantly reduced.

Universal camera mounting assembly

Squarylium compounds of the formula: ##STR1## (in which Q.sup.1 and Q.sup.2 are each a chromophoric group having an aromatic unsaturated system conjugated with the squarylium ring and such that in the compounds of formulae Q.sup.1 CH.sub.2 R.sup.1 and Q.sup.2 CH.sub.2 R.sup.2 the methylene hydrogens are active hydrogens, R.sup.1 and R.sup.2 are each independently a hydrogen atom or an aliphatic or cycloaliphatic group, and R.sup.3 and R.sup.4 are each independently a hydrogen atom, or an acyl, aliphatic, cycloaliphatic, aromatic or heterocyclic group, subject to the proviso that one of R.sup.3 and R.sup.4 may be an amino or substituted amino group, or one of R.sup.3 and R.sup.4 is a hydrogen atom and the other is an organosulfonyl group, or R.sup.3 and R.sup.4 together with the intervening nitrogen atom form a nitrogenous heterocyclic ring) are useful as near infra-red absorbers. The presence of the amino group on the squarylium ring enables minor changes in absorption wavelength to be achieved by modifications of this group, and also allows functional groups to be incorporated into the dye without changing the chromophoric groups.

Processes for the preparation of squarylium dyes

Squarylium dyes, and processes and intermediates for the preparation

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Norton, MA, United States of America

Richard M Allen