Printability of Synthetic Papers by Electrophotography

This paper deals with the printability of synthetic papers by the electrophotography technique. Prints of cmyk colour fields from 20% to 100% raster tone values were printed on three types of synthetic papers (one film synthetic paper and two fiber synthetic papers). The investigation of the appearance included densitometric measurement of the cmyk prints. The results have shown differences in the optical density and optical tone value between cmyk prints made on various synthetic papers. The highest optical density and the increase of the optical tone value were observed on the film synthetic paper, where cmyk prints were more saturated. The highest abrasion resistance of cmyk prints was obtained from the fibre synthetic paper

Rethinking Gender and Politeness

In this present thesis I am going to take a theoretical as well as empirical approach to question the relationship between gender identity and politeness. I would also like to challenge previous researches on stereotypical parallel between politeness and femininity and impoliteness and masculinity.régi képzésangol nyelv és irodalom szakos tanár (távoktatás

Ideális testek, avagy a testet öltött ideálok A testképzavarok az orvostudományban

Minden kornak megvolt a maga „divatos” betegsége, melyek egyfajta indikátorként, az adott korra jellemző társadalmi problémákat jelezték, rájuk válaszként alakultak ki. Jelenleg az evészavarok sokoldalúvá válása (különösen a női populációban) és az újabb, inkább a testképzavarok irányába tendáló betegségek megjelenése jellemző. Ezek az újonnan felbukkanó zavarok az okai, hogy az utóbbi időben a testképzavaros kórképek gyakorisági mutatóiban a nemek közötti különbség csökkenő tendenciát mutat, tehát a férfiak határozott felzárkózása figyelhető meg. Mindezek mellett egyre gyakoribb azon szubklinikai zavarok előfordulása, amik ugyan nem illeszthetők be egyetlen diagnosztikai kritériumrendszerbe sem, betegségként egyelőre még nem definiálhatók, mégis a személy életminőségét jelentős mértékben csökkentik. Mielőtt belekezdenék a téma kifejtésébe, nem árt tisztázni, hogy mit is értünk testképzavarral összefüggő rendellenesség alatt. Véleményem szerint Ujfalussy Dorottya Júlia által megfogalmazott definíció ad erről a legpontosabb képet: „Minden olyan viselkedészavart ide sorolunk, amelyben a páciens nem tudja helyesen megítélni saját testét, illetve azt, hogy mi a normális, hanem abbeli igyekezetében, hogy egy természetellenes ideálhoz hasonlítson, egészségére ártalmas szokásokat vesz fel. Minden ilyen zavarra jellemző a megszállottság és a kényszeresség, a szociális elszigetelődés, ráadásul fokozott megfelelési vágy, illetve beteges lelkifurdalás jelentkezik a hibás viselkedés elhagyása esetén.” A testképzavaros kórképek korunk eddig megoldatlan orvosi, illetve népegészségügyi problémái. Az utóbbi években hatalmas érdeklődés övezte őket mind a laikus, mind a szakmabeli emberek részéről. Szinte nem telik el úgy nap, hogy ne hallanánk róluk a tömegtájékoztatáson keresztül, s a tudományos cikkek publikálása is folyamatosan és rohamtempóban bővül. Előtérbe kerülésük több okra vezethető vissza. Az egyik okot nagy gyakoriságuk adja: az evészavaros kórképek, mint az anorexia vagy a bulimia prevalenciája 2-3%. Másrészt folyamatosan növekszik a morbiditásuk: a bulimiában például ma már több beteget tartanak számon, mint az anorexiában, pedig a kórkép csak néhány évtizedes múltra tekint vissza. Harmadrészt minduntalan újabb és újabb formák jelennek meg és terjednek el, amiben a jelen fogyasztói társadalom nagy segítségükre van. Továbbá az sem elhanyagolható szempont, hogy ezeknek a kórképeknek a mortalitása meglehetősen magas (az anorexiáé a betegségkezdet után egy évtizeddel 8% körüli). Ilyen szempontból a pszichológiai betegségek között az első helyen állnak.egységes, osztatlanáltalános orvosmagyarnappal

Quality Of Electrophotographic Prints On Foil Substrates

Electrophotographic printing uses many types of substrates, our study focuses on plastic substrates. Six types ofregular and self-adhesive foil substrates were chosen to be printed using two electrophotographic presses: XeroxColour 1000 Press and Canon imagePress C7000VP. A test chart containing tone value scales and a set of samplesfor profiling was created, spectrophotomety and densitometry was applied to obtain the optical and colorimetricproperties of the substrates investigated. Xerox Color 1000 Press produced larger densities and tone value increaseon every type of substrate. The largest TVI values and reproducible colour gamut was observed on the smoothestfoil in case of both presses. Large colour differences were found between patches of full tone process colors on thedifferent substrates investigated

Creativity and interactive solutions in the graphic communications

The application of traditional forms was common while printed products were dominating the exchange of information. New solutions only emerged gradually. However, competition with electronic communication gave new momentum to creativity in graphic communication. Authors now structure and summarize the needs and expectations that ‘smartphone-using’ consumers have of printed products. They portray creative solutions that were designed to live up to these expectations – solutions that stimulate multiple sensory organs simultaneously and are capable of interactive communication

Investigation of factors influencing tone reproduction in screen printing

Screen printing is one of the oldest printing processes. While its theory and tools did not change significantly, the technology underwent a considerable improvement during its history, and continues to develop in the 21st century as well. Screen printing allows deposition of a thick layer of ink onto the substrate, enabling the use of ideally any kind of substrate. In the case of this technology it is increasingly important to choose the right screen ruling according to the estimated viewing distance. Despite the significant technological development, halftone screen printing remains a challenge. Factors influencing quality are in close interaction with each other. For the optimal output it is necessary to control these factors more or less independently to produce high density screen prints in high quality. Tone values of the screen print are primarily influenced by the density of the mesh and thread weight. In practice the smallest dot will determine the usable highest screen ruling. In our research we investigated the effect of screen ruling on print quality. Test charts were printed on PVC and PP substrates using 36 l cm–1 and 60 l cm–1 screens ruling. Optical measurements were performed to determine density values, TVI curves, gamut volume to investigate the factors influencing tone reproduction quality. Magnified images were used to evaluate substrate-ink interaction

Lean and green printing … the new attitude of printers

The exploration of the human–machine environment principally calls for the methods of organizational studies. Lean management is a systemic methodology that identifies, eliminates all forms of losses, as well as all such activities that do not represent any added value for the customer, client. the lean work methodology has been applied by several companies involved in graphic communication. The fundamental principle of lean is to avoid waste. The first principle of environmental improvement is the same. 80% of common actions provide mutual benefits. It means the lean and green printing have the same aims. The author introduces the movements and events of the lean and green printing in the different countries, over the world at the last 5–7 years

An influence of accelerated ageing on distinctness of image for coated offset prints

The accelerated ageing is a test method used to simulate the long term effects of heat, oxygen, sunlight, moist etc. over the short period of time. The influences of external parameters are mimicked within the environmental chambers by strictly defined, standard test conditions. Printed products are, as any other material, very susceptible to ageing. This is even more emphasized if they are exposed outdoor. In order to prevent mechanical and chemical damages, products are usually varnished or laminated. In this paper we investigated the influence of accelerated ageing of offset papers coated with different types of coating, with regard to distinctness of image. Since the distinctness of image describes the deviation of the spread of the light reflected at the specular angle, it is a better indicator of a product surface quality than specular gloss. As a samples for this study we used papers printed with conventional and hybrid inks and coated with aqueous and UV coatings. Distinctness of image was assessed for primary process colours before and after ageing, where ageing is performed in accordance to ISO 12040-1997 and ISO 4892-2:2006. From the obtained results it was concluded that the accelerated ageing leads to the increase of surface roughness of coated papers and hence to the decrease of distinctness of image. The same trend is found for each of the primary process colours