Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Structurally defined
Reexamination Certificate
2000-12-27
2003-02-11
Schilling, Richard L. (Department: 1752)
Radiation imagery chemistry: process, composition, or product th
Radiation sensitive product
Structurally defined
C430S533000, C430S939000, C428S141000, C428S220000, C428S480000
Reexamination Certificate
active
06518004
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to a polyester support excellent in cutting properties (film cutting and notch forming properties) in a photofinishing laboratory (processing laboratory), excellent in handling properties, and less generation of develop scratches. Further, the present invention relates to a silver halide photographic material using the same.
BACKGROUND OF THE INVENTION
Silver halide photographic materials (hereinafter also briefly referred to as photographic materials) using polyester supports are described in JP-A-6-035118 (the term “JP-A” as used herein means an “unexamined published Japanese patent application”). However, when these photographic materials were used to prepare brownie or 135 system photographic materials and subject them to a sequence of processing steps in a photofinishing laboratory (processing laboratory), poor cutting occurred in cutters mounted on a miniature laboratory, a splicer and a mounter for reversal. The reason for this is that the polyester supports high in mechanical strength and poor in cutting properties are difficult to be cut, because TAC supports that have previously been used are very easy to be cut and the cutters are adjusted thereto.
For solving this problem, anisotropic stretching (twice or less in a machine direction (MD) and 2.5 to 6 times in a transverse direction (TD)) as described in JP-A-10-293381 is proposed. However, when photographic materials using supports obtained by such anisotropic stretching were allowed to pass through a sequence of processing steps in a processing laboratory, poor cutting occurred in a notch forming step. The term “notch” as used herein means a half-round opening having a diameter of 3 to 8 mm formed for recognizing a position of an image in a printer. In the anisotropic supports prepared in the above-mentioned patent, isotropic half-round openings can not be formed precisely. It has been therefore desired that such disadvantage is overcome.
Further, a method of mixing polyesters different from each other in intrinsic viscosity as described in JP-A-11-202446 is proposed. According to this method, however, not only the load in cutting and notch forming is heavy, but also flashes (remainders remaining at cut portions without being cut away) are generated in large amounts. Such disadvantage has therefore been desired to be overcome. Furthermore, the use of a polyester low in intrinsic viscosity, that is to say, low in molecular weight, is liable to produce scratches during development and printing under a low-moisture atmosphere in a processing laboratory. It has been therefore desired that such problem is solved.
SUMMARY OF THE INVENITON
An object of the present invention is to provide a polyester support excellent in cutting properties (film cutting and notch forming properties) in a photofinishing laboratory (processing laboratory), excellent in handling properties, and difficult to generate scratches.
Another object of the present invention is to provide a silver halide photographic material using such a polyester support.
These objects have been attained by a polyester support having both transverse direction (TD) and machine direction (MD) breaking strengths of from 5 kg/mm
2
to 18 kg/mm
2
, and both transverse direction (TD) and machine direction (MD) breaking elongations of from 20% to 140%.
Further, these objects have also been attained by a polyester support having both transverse direction (TD) and machine direction (MD) breaking strengths of from 5 kg/mm
2
to 18 kg /mm
2
, and both TD and MD Young's moduli of from 400 kg /mm
2
to 650 kg /mm
2
.
REFERENCES:
patent: 4390683 (1983-06-01), Yatsu et al.
patent: 5368997 (1994-11-01), Kawamoto
patent: 5580707 (1996-12-01), Kawamoto
patent: 5914220 (1999-06-01), Murayama
patent: 6132951 (2000-10-01), Ezure et al.
patent: 6232054 (2001-05-01), Okutu et al.
patent: 10-293381 (1998-11-01), None
patent: 11-202445 (1999-07-01), None
patent: 11-202446 (1999-07-01), None
Derwent 1999-030310, Abst of JP 10/293 381, Nov. 1998.*
American National Standard for Photography (Film) -Methods for Determining Curl, ANSI/ASC PH1.29-1985, 14 pages.
Fuji Photo Film Co. , Ltd.
Schilling Richard L.
Sughrue & Mion, PLLC
LandOfFree
Polyester support and silver halide photographic material does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Polyester support and silver halide photographic material, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Polyester support and silver halide photographic material will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3177787