Color negative film
AssigneeEastman Kodak Company
InventorsJohn F. Sawyer, Sharon R. Lunt
Life of this patent
Estimating the term…
Abstract
A multicolor negative image capture film element comprises multiple silver halide emulsion layers that together exhibit a more gradually sloped density to exposure relationship than is customary while providing a combination of improved latitude and desirable overexposure printing density reduction.
Claims60
A color negative silver halide multilayer film exhibiting (a) an Aged ISO speed of at least 448;
- (b) a Composite Average Slope (CS) such that
- 0.50<CS<0.60;
- (c) a Slope Ratio (G/B) of at least 0.88;
- and (d) Extended Overexposure Latitude (EOL).
A color negative silver halide multilayer film exhibiting (a) an Aged ISO speed of at least 448;
- (b) a Green Average Slope (GS) such that
- 0.50<GS<0.60;
- (c) a Slope Ratio (G/B) of at least 0.88;
- and (d) Extended Overexposure Latitude (EOL).
A color negative film exhibiting
- (a) an Aged ISO speed of at least 448;
- (b) Extended Overexposure Latitude (EOL);
- (c) a Slope Ratio (G/B) of at least 0.88;
- and
- (d) a Status M Composite density (Dc), at 2.01 log H above the log H value at which the composite density is 0.15 above Dmin, of not more than 1.35.
A color negative film exhibiting
- (a) an Aged ISO speed of at least 448;
- (b) Extended Overexposure Latitude (EOL);
- (c) a Slope Ratio (G/B) of at least 0.88;
- and
- (d) a Status M green density (Dg), at 2.01 log H above the log H value at which the green density is 0.15 above Dmin, of not more than 1.34.
A packaged color negative film
- (a) containing a designated ISO speed or Exposure Index (EI);
- (b) exhibiting an Aged ISO speed at least 12% greater than that designated;
- (c) exhibiting Extended Overexposure Latitude (EOL);
- and
- (d) exhibiting a Composite density (Dc), at a log H corresponding to 1.2 log H more exposed than that for an 18% gray card exposed as necessary for the designated speed, of not more than the value given by equation (I).
- Dc=1.347+0.605(log HAged−log HDesignated) I
A packaged color negative film
- (a) containing a designated ISO speed or Exposure Index (EI);
- (b) exhibiting an Aged ISO speed at least 12% greater than that designated;
- (c) exhibiting Extended Overexposure Latitude (EOL);
- and
- (d) exhibiting a Status M green density (Dg), at a log H corresponding to 1.2 log H more exposed than that for an 18% gray card exposed as necessary for the designated speed, of not more than the value given by equation (II).
- Dg=1.340+0.591(log HdAged−log Hdesignated) II
A packaged color negative film
- (a) containing a designated ISO speed or Exposure Index (EI) of 400 or higher;
- (b) exhibiting an Aged ISO speed of at least 12% greater than that designated;
- and
- (c) exhibiting Extended Overexposure Latitude (EOL).
A packaged color negative film
- (a) containing a designated ISO speed of 400 or higher;
- (b) exhibiting an Aged ISO speed of at least 12% greater than that designated;
- and
- (c) exhibiting Extended Overexposure Latitude (EOL).
A packaged color negative film
- (a) containing a designated ISO speed of 400 or higher;
- and
- (b) exhibiting an Aged ISO speed of at least 12% greater than that designated.
A packaged color negative film
- (a) containing a designated ISO speed or Exposure Index (EI);
- (b) exhibiting an Aged ISO speed at least 12% greater than that designated;
- (c) exhibiting Extended Overexposure Latitude (EOL);
- and
- (d) exhibiting a Composite Average Slope (CS) such that
- 0.50<CS<0.60.
A packaged color negative film
- (a) containing a designated ISO-speed or Exposure Index (EI);
- (b) exhibiting an Aged ISO speed at least 12% greater than that designated;
- (c) exhibiting Extended Overexposure Latitude (EOL);
- and
- (d) exhibiting a Green Average Slope (GS) such that
- 0.50<GS<0.60.
Dependencies are inferred from the claim text.