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0. Complete issue
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- 1. The influence of surface tension on wetting in dampening solution and sustainability of printing: A review
- Pages: 5-11
- Cem Aydemir, Semiha Yenidoğan
- Abstract | Download | View
Abstract
Offset is defined as a printing technique using a system of two-fluids
(ink + dampening solution) that requires a constant monitoring
and a balancing system due to the physical-chemical features of the
process. Ink and dampening solution on the printing plate surface
should not be intergraded during the chemical interaction. Image and
non-image areas on the plate surface can be separated from each other
only through the interaction of dampening solution and ink.
The dampening solution is responsible for the wetting of non-image
areas on a printing plate, and are applied to the entire plate. In the wetting
process, the amount of the dampening solution on the plate should
be at the lowest level. This can be provided only by lowering the surface
tension of the dampening solution. Thus, quality printing results,
such as edge sharpness, high color intensity and high print gloss are
achieved with a small amount of wetting on the printing plate surface.
In this study, the wetting of the printing plate surface is investigated
under the effects of surface tension of dampening solution
and its angle of contact with the printing plate and current
studies related to the subject are reviewed and discussed.
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2. Consumers’ preferences for visual elements on chocolate packaging
- Pages: 13-18
- Antonija Kovač, Dorotea Kovačević, Josip Bota, Maja Brozović
- Abstract | Download | View
Abstract
Many recent researches focused on packaging elements as two separate
groups: visual and informative elements. This study goes deeper into the
group of visual elements on food packaging (i.e. strawberry chocolate
packaging) in order to investigate their ability to attract attention. The
elements tested in the study were: typeface, graphics, pattern and
colour. The study included 90 people who participated by filling out
an online questionnaire. The participants’ task was to choose, among
packaging designs with the manipulated visual elements, the one they
preferred. According to the results, typeface did not affect participants’
preferences. On the contrary, graphics, patterns and colours had a
significant impact on the choices. Participants preferred photography
over illustration, concrete pattern over abstract and vivid colours over
dull. These results can be used as guidelines in marketing and design.
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3. Electronic and microscopic analysis of offset imprints of barcodes on cardboards
- Pages: 19-24
- Svitlana Havenko, Oleksandr Konyukhov, Ivanna Konyukhova
- Abstract | Download | View
Abstract
The results of analysis of offset imprints of barcodes on cardboards
have been offered in this article. The influence of the imprints
surface structure on the ink adhesion and the influence of additional
varnishing on the barcodes stability to abrasion have been researched.
Electronic and microscopic analysis was carried out and their quality
parameters were determined - roughness, contrast, optical density.
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- 4. Colour fastness of screen printed polyamide knitwear to chlorinated water
- Pages: 25-34
- Đorđe Vujčić
- Abstract | Download | View
Abstract
Two polyamide knitwear used in the production of swimwear were analysed.
This paper examines the water retention value, the water absorption value
and the colour difference after the repeated exposure of the polyamide knitted
fabrics, printed with screen printing technique, to the chlorinated water.
Screen printing of the samples results in an increase of the water retention
value and reduction of the water absorption value for both materials. The
colour difference after the series of exposures to the chlorinated water (ΔE)
showed that the trend is the same for all reproduced colours (CMYK), i.e.
that the increase in the number of exposures to the chlorinated water results
in the increase of the difference between the reproduced colours, for both
materials.
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