Abstract

D-Log E curves, also known as H-D curves, are used since the XIX century as a tool for describing the characteristics of silver halide emulsions. This curve has a very standard shape, with a linear region, a toe, a shoulder and a solarization region. In this work we present a distortion of the usual curve due to the action of a high contrast developer, Kodak D8, on an ultra fine grain emulsion, BB640.1 The solarization effect is replaced by a linear zone where developed densities increase with increasing exposures, until all silver halide present in the emulsion is reduced by developer D8 to metallic silver. Densities higher than 11 have been obtained.

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References

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  1. Plates type BB640 and BB520, formerly manufactured by HRTgmbh of Germany, are currently manufactured by Colourholographics Ltd of England (colourholographics@btinternet.com). Although the results shown in this paper have been obtained with HRT plates, tests with Colourholographics plates have been recently performed and results are very close to those presented, specially regarding the anomalous D-LogE curve and the high density values achieved this paper deals with.
  2. F. Hurter and V. C. Driffield, "Photo-chemical investigations and a new method of the sensitiveness of photographic plates," J. Soc. Chem. Ind. 455-469 (1890).
  3. E. K. Mees and T. H. James, "The Theory of the Photographic Process," (The Macmillan Company, New York, 1966).
  4. J. C. Dainty and R. Shaw, "Image Science," (Academic Press, London, 1974).
  5. H. I. Bjelkhagen, "Silver-Halide Recording Materials," (Springer-Verlag, New York, 1993).
  6. Eastman Kodak Company, "Black-and-White Processing Using KODAK Chemicals," 1985.
  7. A. Fimia, M. Pardo, J. A. Quintana, "Improvement of image quality in bleached holograms," Appl. Opt. 21, 3412-3413 (1982).
    [CrossRef] [PubMed]
  8. H. Kasprzak and N. Sultanova and H. Podbielska, "Nonlinear effects of the recording material on the image quality of a Fourier hologram," J. Opt. Soc. Am. A 4, 843-846 (1987).
    [CrossRef] [PubMed]
  9. S. Blaya, L. Carretero, R. F. Madrigal and A. Fimia, H. S. Nalwa editor, "Handbook of advanced electronic and photonic materials and devices", vol. 7, "Photosensitive materials for holographic recording," (Academic Press, San Diego, 2001).
  10. R. Birenheide, "BB emulsion series: current standings and future developments," Proc. SPIE, 3358, 28-30, (1997).
  11. http://www.Slavich.ru
  12. http://perso.wanadoo.fr/holographie/GB/index.html
  13. J. M. Kim, B. S. Choi, S. I. Kim, H. I. Bjelkhagen and N. J. Phillips, "Holographic optical elements recorded in silver halide sensitized gelatin emulsions. Part I. Transmission holographic optical elements," Appl. Opt. 40, 622-632 (2001).
    [CrossRef]

Other

Plates type BB640 and BB520, formerly manufactured by HRTgmbh of Germany, are currently manufactured by Colourholographics Ltd of England (colourholographics@btinternet.com). Although the results shown in this paper have been obtained with HRT plates, tests with Colourholographics plates have been recently performed and results are very close to those presented, specially regarding the anomalous D-LogE curve and the high density values achieved this paper deals with.

F. Hurter and V. C. Driffield, "Photo-chemical investigations and a new method of the sensitiveness of photographic plates," J. Soc. Chem. Ind. 455-469 (1890).

E. K. Mees and T. H. James, "The Theory of the Photographic Process," (The Macmillan Company, New York, 1966).

J. C. Dainty and R. Shaw, "Image Science," (Academic Press, London, 1974).

H. I. Bjelkhagen, "Silver-Halide Recording Materials," (Springer-Verlag, New York, 1993).

Eastman Kodak Company, "Black-and-White Processing Using KODAK Chemicals," 1985.

A. Fimia, M. Pardo, J. A. Quintana, "Improvement of image quality in bleached holograms," Appl. Opt. 21, 3412-3413 (1982).
[CrossRef] [PubMed]

H. Kasprzak and N. Sultanova and H. Podbielska, "Nonlinear effects of the recording material on the image quality of a Fourier hologram," J. Opt. Soc. Am. A 4, 843-846 (1987).
[CrossRef] [PubMed]

S. Blaya, L. Carretero, R. F. Madrigal and A. Fimia, H. S. Nalwa editor, "Handbook of advanced electronic and photonic materials and devices", vol. 7, "Photosensitive materials for holographic recording," (Academic Press, San Diego, 2001).

R. Birenheide, "BB emulsion series: current standings and future developments," Proc. SPIE, 3358, 28-30, (1997).

http://www.Slavich.ru

http://perso.wanadoo.fr/holographie/GB/index.html

J. M. Kim, B. S. Choi, S. I. Kim, H. I. Bjelkhagen and N. J. Phillips, "Holographic optical elements recorded in silver halide sensitized gelatin emulsions. Part I. Transmission holographic optical elements," Appl. Opt. 40, 622-632 (2001).
[CrossRef]

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Figures (3)

Fig. 1.
Fig. 1.

D-Log E curves of BB640 plates processed with developers AAC (Δ), D19 (□), D8 (•) and D8 with half concentration of hydroquinone (■).

Fig. 2.
Fig. 2.

D-Log E curves of BB640 plates processed with D8 and exposed to single beam (☉) and holographic setups of spatial frequencies of 1200 lp/mm (•) and 4990 lp/mm (▴).

Fig. 3.
Fig. 3.

BB640 plates exposed holographically with a spatial frequency of 1200 lp/mm and processed with D8. D-Log E curve (•) is related with DE of direct bleached plate (☉), DE of reversal bleached plate (△) and DE of non fix direct bleached plate (□).

Equations (1)

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D = 0 . 1 5 + 8 1 + exp ( 13 . 2 + 3 . 1 log E ) + exp ( 10 . 8 4 . 3 log E )

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