THE RELATIONSHIP BETWEEN THE HETEROGENEOUS STRUCTURE OF THE SEALED SURFACE AND THE INFORMATION CHARACTERISTICS OF THE PRINTS

UDC 655.3.0006

  • Gromyko Irina Grigor’yevna − PhD (Engineering), Associate Professor, Head of the Department of Printing Production. Belarusian State Technological University (13a, Sverdlova str., 220006, Minsk, Republic of Belarus). E-mail: gromyko@belstu.by

DOI: https://doi.org/10.52065/2520-6729-2022-255-1-22-28

Key words: microprofile, fractal dimension, paint capacity, saturation coefficient, paint transfer coefficient, information capacity.

For citation: Gromyko I. G. The relationship between the heterogeneous structure of the sealed surface and the information characteristics of the prints. Proceeding of BSTU, issue 4, Print- and Mediatechnologies, 2022, no. 1 (255), pp. 22–28 (In Russian). DOI: https://doi.org/10.52065/2520-6729-2022-255-1-22-28.

Abstract

The article presents studies of various brands of coated cardboard. Profilograms of the microprofile of the studied samples were constructed with the subsequent digitization procedure. For this purpose, an optical method was used to control the structure of the paper, which is characterized by a high penetrating ability. The analysis of the constructed profilograms made it possible to determine the fractal dimension of the paper structure. To assess the interaction of paper and ink during printing, the influence of fractal features of the microstructure on the paint capacity of cardboard samples was investigated. Saturation and paint transfer coefficients were also calculated and their dependences on the thickness of the ink layer on the printed form were constructed. The conducted studies revealed the influence of the inhomogeneous structure of the sealed surface on the accuracy of reproduction of image elements. To this end, an assessment of the nature of the distribution of paint on the sealed surface was carried out on the basis of an information approach. The considered approach made it possible to estimate the amount of information capacity losses taking into account the structure of the sealed surface. The calculation was based on the refined values of the relative area of raster elements and the effective lineature, changes in the values of which indicate violations of the graphical and gradational accuracy of the reproduced image.

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References

  1. Kozarovitscky L. A. Bumaga i kraska v protsesse pechataniya [Paper and ink in the process of printing]. Moscow, Kniga Publ., 1965. 368 ɪ. (In Russian).
  2. Popryadukhin P. A. Tekhnologiya pechatnykh protsessov [Technology of printing processes]. Moscow, Kniga Publ., 1968. 360 ɪ. (In Russian).
  3. Kulak M. I. Fraktal’naya mekhanika materialov [Fractal mechanics of materials]. Minsk, Vysheyshaya shkola Publ., 2002. 304 p. (In Russian).
  4. Shakhkel’dyan B. N., Zagarinskaya L. A. Poligraficheskiye materialy [Polygraphic materials]. Moscow, Kniga Publ., 1988. 330 ɪ. (In Russian).
  5. Kulak M. I., Nichiporovich S. A., Medyak D. M. Metody teorii fraktalov v tekhnologicheskoy mekhanike i protsessakh upravleniya: poligraficheskiye materialy i protsessy [Methods of the theory of fractals in technological mechanics and control processes: printing materials and processes]. Minsk, Belaruskaya navuka Publ., 2007. 419 p. (In Russian).
  6. Piotukh I. G., Plaskonnaya N. V., Medyak D. M. Taking into account the fractal features of the paper micro-structure when calculating the ink transfer coefficient. Izdatel’sko-poligraficheskiy kompleks na poroge tret’yego tysyacheletiya: materialy Mezdunarodnoy nauchno-tekhnicheskoy konferentsii [Publishing and Printing Complex on the threshold of the third millennium: materials of the International Scientific and Technical Conference]. Minsk, 2001, pp. 118–121 (In Russian).
  7. Piotukh I. G., Plaskonnaya N. V., Medyak D. M. The influence of fractal features of the surface microstructure on the ink capacity of printed paper. Izdatel’sko-poligraficheskiy kompleks na poroge tret’yego tysyacheletiya: materialy Mezdunarodnoy nauchno-tekhnicheskoy konferentsii [Publishing and Printing Complex on the threshold of the third millennium: materials of the International Scientific and Technical Conference]. Minsk, 2001, pp. 110–117 (In Russian).
  8. Kulak M. I., Bobrova O. P., Piotukh I. G. Fractals in the studies of the interaction of paper and ink in the printing process. Avtomaticheskiy kontrol’ i avtomatizatsiya proizvodstvennykh protsessov: materialy Mezdunarodnoy nauchno-tekhnicheskoy konferentsii [Automatic control and automation of production processes: materials of the International Scientific and Technical Conference]. Minsk, 2001, pp. 249–251 (In Russian).
  9. Gromyko I. G., Rusova Yu. Yu. The use of an information approach to assess the quality of printed prints. Trudy BGTU [Proceedings of BSTU], 2006, series IX, Publishing and Printing, issue XIV, pp. 64−67 (In Russian).
  10. Gromyko I. G., Titov D. A. Influence of technological and operating parameters of the baking process on the quality of sheet offset printing prints. Noveyshiye dostizheniya v oblasti importozameshcheniya v khimicheskoy promyshlennosti i proizvodstve stroitel’nykh materialov: materialy Mezdunarodnoy nauchnotekhnicheskoy konferentsii [The latest achievements in the field of import substitution in the chemical industry and the production of construction materials: materials of the International Scientific and Technical Conference]. Minsk, 2012, pp. 215–218 (In Russian).
  11. Gromyko I. G., Macueva S. D. Informational evaluation of reproduction of digital and polygraphic originals by offset printing method. Trudy BGTU [Proceedings of BSTU], 2014, series IX, Publishing and Printing, no. 9, pp. 18−22 (In Russian).
  12. Gromyko I. G. Influence of the speed of the printing process on the amount of information capacity losses of offset printing prints. Trudy BGTU [Proceedings of BSTU], 2015, series IX, Publishing and Printing, no. 9, pp. 7−11 (In Russian).
  13. Gromyko I. G., Aleshauskas V. A. Determination of the loss of information capacity of the clutches in the process of printing the circulation. Skorinovskiye chteniya 2015: knigoizdaniye i knigorasprostraneniye v kontekste krosskul’turnykh kommunikatsiy XXI veka: materialy Mezdunarodnogo foruma [Skorinovsky readings 2015: book publishing and book publishing in the context of cross-cultural communications of the XXI century: materials of the International Forum]. Minsk, 2015, pp. 173–179 (In Russian).
  14. Babakhanova H. A., Galimova Z. K., Gromyko I. G. Information assessment of print quality. Trudy BGTU [Proceedings of BSTU], 2020, issue 4, Print- and Mediatechnologies, no. 1 (231), pp. 5–10 (In Russian).
  15. Gromyko I. G. Comparative characteristics of information capacity losses of sheet and roll offset printing. Trudy BGTU [Proceedings of BSTU], 2016, series IX, Publishing and Printing, no. 9, pp. 5−10 (In Russian).
10.01.2021