Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
180 words
A recording material comprising a support and a thermosensitive
element comprising silver palmitate, an organic reducing agent
therefor in thermal working relationship therewith and a binder,
characterized in that said silver palmitate is not associated
with mercury and/or lead ions and when said recording material
is irradiated with a copper Kα 1 X-ray source the ratio of the
sum of the peak heights of the X-ray diffraction lines
attributable to silver palmitate at Bragg angles, 2Θ, of 4.01°,
6.049°, 8.031°, 10.06°, 12.08° and 14.09° to the sum of the peak
heights of the X-ray diffraction lines at Bragg angles, 2Θ, of
25.60°, 35.16° and 43 40° of NIST standard 1976, rhombohedral
Al 2 O 3 , determined with the same X-ray diffractometer in the same
state of adjustment on a sample of said recording material and a
sample of said NIST standard 1976 cut to fit a sample holder of
said X-ray diffractometer, divided by the square root of the
quantity of silver in the recording material, expressed in g per
m 2 , is greater than 3.09m/g 0.5 .
Claim 2
Dependent Claim
35 words
Recording material according to claim 1, wherein said ratio,
divided by the square root of the quantity of silver in the
recording material expressed in g per m 2 is greater than
3.3m/g 0.5 .
Claim 3
Dependent Claim
19 words
Recording material according to any of the preceding claims,
wherein said thermosensitive element is provided with a
protective layer.
Claim 4
Dependent Claim
33 words
Recording material according to any of the preceding claims,
wherein said thermosensitive element further comprises a
photosensitive species capable upon exposure of forming a
species capable of catalyzing reduction of said silver
palmitate.
Claim 5
Dependent Claim
135 words
A production process for a dispersion of particles of
substantially light-insensitive organic silver salt containing
silver palmitate in a substantially solvent-free aqueous medium
comprising the steps of: i) producing an aqueous dispersion of
one or more organic acids including palmitic acid and an anionic
surfactant; ii) substantially neutralizing said organic acids
with aqueous alkali thereby forming organic acid salts including
a palmitic acid salt; (iii) adding an aqueous solution of a
silver salt to completely convert said organic acid salts into
their silver salts including silver palmitate, characterized in
that said anionic surfactant is present in a molar ratio with
respect to organic acid greater than 0.15 and said silver salt
is added to produce organic silver salt(s) at a rate between
0.025mol/mol organic silver salt(s) · min and 2.25mol/mol
organic silver salt(s) · min.
Claim 6
Dependent Claim
21 words
Production process according to claim 5, wherein said anionic
surfactant is an alkali or ammonium salt of an alkaryl sulfonic
acid.
Claim 7
Dependent Claim
28 words
Production process according to claim 6, wherein said alkali or
ammonium salt of an alkaryl sulfonic acid is an alkali or
ammonium salt of an alkylbenzene sulfonic acid.
Claim 8
Dependent Claim
31 words
Production process according to any of claims 5 to 7 further
comprising the step of subjecting said dispersion of particles
of substantially light-insensitive organic silver salt(s)
containing silver palmitate to ultrafiltration.
Claim 9
Dependent Claim
19 words
Particles of substantially light-insensitive organic silver salt
containing silver palmitate producible according to any of
claims 5 to 8.
Claim 10
Dependent Claim
64 words
A recording process comprising the steps of: (i) bringing an
outermost layer of a recording material according to any of
claims 1 to 3 into proximity with a heat source; and (ii)
applying heat from said heat source imagewise to said recording
material while maintaining proximity to said heat source to
produce an image; and (iii) removing said recording material
from said heat source.
Claim 11
Dependent Claim
16 words
Recording process according to claim 10, wherein said heat
source is a thin film thermal head.