Key Concepts, Methods, and Principles of Print Production
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Flexographic Printing – High Throughput Technology for Fine Line Seed Layer Printing on Silicon Solar Cells
Presented at the 28th European PV Solar Energy Conference and Exhibition, 30 September – 04 October 2013, Paris, France FLEXOGRAPHIC PRINTING – HIGH THROUGHPUT TECHNOLOGY FOR FINE LINE SEED LAYER PRINTING ON SILICON SOLAR CELLS Andreas Lorenz1, Andre Kalio1, Gunter Tobias Hofmeister1, Sebastian Nold1, Lorenz Friedrich1, Achim Kraft1, Jonas Bartsch1, Dietmar Wolf2, Martin Dreher2, Florian Clement1, Daniel Biro1 1Fraunhofer Institute for Solar Energy Systems ISE, Heidenhofstr. 2, 79110 Freiburg, Germany 2Deutschsprachiges Flexodruck-Technologiezentrum DFTA-TZ, Nobelstraße 10, 70569 Stuttgart, Germany Phone: +49 761 4588 5299, email: [email protected] ABSTRACT: Within this work, seed layer grids for solar cell front side metallization were applied using flexographic printing which represents an innovative, high-throughput approach for solar cell front side metallization. Fine line seed layer contact grids with a silver consumption lower than 10 mg per cell could be realized on alkaline textured Czochralski-grown silicon wafers with an edge length of 156 mm. Subsequently, the seed layer has been reinforced with silver using light induced plating (LIP). In order to determine the optimum LIP process, three groups were plated with different amounts of silver deposition. The results were analyzed before and after plating regarding silver consumption, contact finger geometry and interruptions. Solar cell parameters were determined after plating. It was demonstrated, that a homogeneous front side seed layer metallization without interruptions down to a line width of 25 µm can be realized using flexographic printing. The best cell reached a conversion efficiency of 18 % after silver LIP which is comparable to standard screen printed cells on the used Si wafer material. -
COMMERCIAL PRINTING GUIDE a Guide to Color Reproduction and Print Quality for The
COMMERCIAL PRINTING GUIDE A guide to color reproduction and print quality for the GENERAL INFORMATION The Jackson Hole News&Guide strongly suggests that a high-end page layout program be used for file creation. These include, but are not limited to, Quark XPress and Adobe InDesign. These programs allow vector & raster elements to be used, and each to be recognized, by the systems used, including RIPS and preflight software. Creating files completely in raster applications such as Photoshop, may result in vector elements being downsampled by one of the processes used. The Jackson Hole News&Guide, as is customarily the case with newspapers, does not have true bleed pages (Double Truck pages do use ‘gutter’ space, so an exception to this rule). The dimensions given will always be for the ‘live’ area. PDFs are the preferred file format. The preferred job option setting Press Quality. DOT GAIN/LOSS DOT GAIN The Jackson Hole News&Guide is in line with the industry standards regarding dot gain for offset printing. This is not a linear increase and may vary from 20% to 30% depending on tonal range. The important items to remember are: 1) Images will generally print darker than what you see on the monitor. 2) B/W gain will be limited to Black, while process color images gain on all 4 colors. 3) Shadow detail will generally be lost. 4) Dot gain from ‘unwanted’ colors will change the hue of a color. Unwanted colors are those colors not used to create the primary color wanted; for example, cyan is the unwanted color in red, magenta is the unwanted color in yellow, etc. -
Image Carrier Poster
55899-11_MOP_nwsltr_poster_Winter11_v2_Layout 1 2/11/11 2:25 PM Page 1 The Museum of Printing, North Andover, MA and the Image Carrier www.museumofprinting.org Relief printing Wood cuts and wood engravings pre-dated moveable type. Called “xylographic printing,” it was used before Gutenberg for illustrations, playing cards, and small documents. Moveable type allowed corrections and editing. A wood engraving uses the end grain, where a wood cut uses the plank grain. Polymer plates are made from digital files which drive special engraving machines to produce relief plates. These plates are popular with many of today’s letterpress printers who produce invitations, and collectible prints. Metal relief cylinders were used to print repetitive designs, such as those on wrap - ping paper and wall paper. In the 1930s, the invention of cellophane led to the development of the anilox roller and flexographic printing. Today, flexography prints most of the flexible packaging film which accounts for about half of all packaged products. Hobbyists, artists, and printmakers cut away non-printing areas on sheets of linoleum to create relief surfaces. Wood cut Wood engraving and Metal plate Relief cylinder Flexographic plate Linoleum cut Foundry type began with Gutenberg and evolved through Jenson, Garamond, Moveable type Caslon and many others. Garamond was the first printer to cast type that was sold to other printers. By the 1880s there were almost 80 foundries in the U.S. One newspaper could keep one foundry in business. Machine typesetting changed the status quo and the Linotype had an almost immediate effect on type foundries. Twenty-three foundries formed American Type Founders in 1890. -
Printing Technology (Offset, Flexo, Gravure, Screen, Digital, 3D Printing)
Printing Technology (Offset, Flexo, Gravure, Screen, Digital, 3D Printing) (Noncontact Printing ,Commercial Printing, Gravure Printing, Letterpress Printing, Offset Printing, Screen Printing, Offset Lithography, Lanography ,Flexography, Rotogravure, Digital Printing,3D Printing, 3D Printing Machinery, Blanket Cylinder, Plate Cylinder, Impression Cylinder, Web Offset Machines, printing press) Introduction Printing is a process of producing copies of text and pictures. Modern technology is radically changing the way publications are printed, inventoried and distributed. There are a wide variety of technologies that are used to print stuff. The main industrial printing processes are: Offset Lithography, Flexography, Digital Printing (Inkjet & Xerography), Gravure, Screen Printing. 3D printing which is also referred as additive printing technology that enables manufacturers to develop objects using a digital file and variety www.entrepreneurindia.co of printing materials. Global market for 3D printing material includes polymers, metals and ceramics. In addition, 3D printing offers a wide array of applications in various industries, namely consumer products, industrial products, defense & aerospace, automotive, healthcare, education & research and others. In India, the market for printing technology is at its nascent stage however offers huge growth opportunities in the coming years. Digital printing is now taking much more share, particularly in graphics (i.e. non- packaging applications). www.entrepreneurindia.co Digital's share of the whole market doubles in constant value terms from 9.5% to 19.7% and 3D printing market is estimated to garner $8.6 billion in coming years. The print technology in use is also changing. Digital printing is now taking much more share, particularly in graphics (i.e. non-packaging applications). Digital's share of the whole market doubles in constant value terms from 9.5% in 2008 to 19.7% by 2018, when packaging is excluded this share is 23.5% in 2012 to 38.1% by 2018. -
Other Printing Methods
FLEXO vs. OTHER PRINTING METHODS Web: www.luminite.com Phone: 888-545-2270 As the printing industry moves forward into 2020 and beyond, let’s take a fresh look at the technology available, how flexo has changed to meet consumer demand, and how 5 other popular printing methods compare. CONTENTS ● A History of Flexo Printing ● How Flexo Printing Works ● How Litho Printing Works ● How Digital Printing Works ● How Gravure Printing Works ● How Offset Printing Works ● What is Screen Printing? ● Corrugated Printing Considerations ● Flexo Hybrid Presses ● Ready to Get Started with Flexo? 2 A History of Flexo Printing The basic process of flexography dates back to the late 19th century. It was not nearly as refined, precise, or versatile as the flexo process today -- and can be best described as a high-tech method of rubber stamping. Printing capabilities were limited to very basic materials and designs, with other printing methods greatly outshining flexo. Over the past few decades flexo technology has continuously evolved. This is largely thanks to the integration of Direct Laser Engraving technology, advancements in image carrier materials, and in press technologies. These innovations, among others, have led to increased quality and precision in flexo products. These technological improvements have positioned flexography at the helm of consumer product and flexible packaging printing. Flexo is growing in popularity in a variety of other industries, too, including medical and pharmaceutical; school, home, and office products; and even publishing. How Flexo Printing Works Flexo typically utilizes an elastomer or polymer image carrier such as sleeves, cylinders, and plates. The image carrier is engraved or imaged to create the design for the final desired product. -
Aspects of Flexographic Print Quality and Relationship to Some Printing Parameters
Faculty of Technology and Science Chemical Engineering Johanna Johnson Aspects of Flexographic Print Quality and Relationship to some Printing Parameters DISSERTATION Karlstad University Studies 2008:28 Johanna Johnson Aspects of Flexographic Print Quality and Relationship to some Printing Parameters Karlstad University Studies 2008:28 Johanna Johnson. Aspects of Flexographic Print Quality and Relationship to some Printing Parameters DISSERTATION Karlstad University Studies 2008:28 ISSN 1403-8099 ISBN 978-91-7063-187-0 © The Author Distribution: Faculty of Technology and Science Chemical Engineering 651 88 Karlstad 054-700 10 00 www.kau.se Printed at: Universitetstryckeriet, Karlstad 2008 Abstract Flexographic printing is a common printing method in the packaging field. The printing method is characterized primarily by the flexible printing plate and the low viscosity inks which make it suitable for use on almost any substrate. The object of this study was to obtain further knowledge of some important mechanisms of flexographic printing and how they influence the print quality. The thesis deals with printing primarily on board and liner but also on newsprint with water-borne ink using a full- scale flexographic central impression (CI) printing press. Several printing trials have been performed with a focus on the chemical interaction between the ink and substrate and the physical contact between the ink- covered printing plate and the substrate. Multicolour printing exposes the substrate to water from the water- containing ink. The emphasis was to investigate the relation between print quality and water-uptake of the paper surface with heat and water. Printing trials was carried out on substrates possessing a hydrophobic, and also a rather hydrophilic surface using a regular commercial water-borne ink. -
Printing Industry Is the Large Proportion of Very Small Firms
The printing sector is a diversified industry sector composed of firms who perform printing as well as firms who render services for the printing trade, such as platemaking and bookbinding. One of the most significant characteristics of the printing industry is the large proportion of very small firms. The Census Bureau reported that in 2002 nearly half of the 37,538 printing companies had fewer than five employees; approximately 80 percent employed fewer than 20 workers. Processes used in printing include a variety of methods used to transfer an image from a plate, screen, film, or computer file to some medium, such as paper, plastics, metal, textile articles, or wood. The most prominent of these methods is to transfer the image from a plate or screen to the medium (lithographic, gravure, screen, and flexographic printing). A rapidly growing new technology uses a computer file to directly "drive" the printing mechanism to create the image and new electrostatic and other types of equipment (digital or nonimpact printing). Four Main Segments The printing industry can be separated into four main segments: Lithography Flexography Gravure Screen printing Lithography Lithography is a planographic printing system where the image and non-image areas are chemically differentiated with the image area being oil receptive and non-image area water receptive. Ink film from the lithographic plate is transferred to an intermediary surface called a blanket, which, in turn, transfers the ink film to the substrate. Fountain solution is applied to maintain the hydrophilic properties of the non-image area. Ink drying is divided into heatset and non- heatset. -
I. INTRODUCTION and BACKGROUND the Printing Industry Is One of the Largest Manufacturing Industries in the United States
I. INTRODUCTION AND BACKGROUND The printing industry is one of the largest manufacturing industries in the United States. The industry is dominated by small and medium-sized businesses, most of them with fewer than 20 employees. In 2002, according to the Bureau of Census, approximately 83 percent of the screen printing industry was comprised of small businesses. The Info USA Power Business Database estimates the number of screen printers in 2002 in the U.S. at 16,341. California has 1,886 screen printing establishments. Volatile Organic Compound (VOC) emissions from solvent cleaning operations contribute significantly to the South Coast Air Basin’s emission inventory. The South Coast Air Quality Management District (SCAQMD or District) periodically adopts an Air Quality Management Plan (AQMP). This AQMP calls for significant reductions in VOC emissions from cleaning and degreasing operations by 2010 to achieve attainment status. The SCAQMD regulates VOC emissions from businesses located in the four county area including Los Angeles County, Orange County, San Bernardino County and Riverside County. One of the SCAQMD rules, Rule 1171 “Solvent Cleaning Operations,” regulates the VOC content of screen printing cleanup solvents. The VOC content of screen printing cleanup solvents is currently set at 500 grams per liter. The District plans to reduce the allowed VOC content to 100 grams per liter on July 1, 2006. Lowering the VOC content to 100 grams per liter would reduce emissions of these solvents by about 1.3 tons per day. By July 1, 2006, screen printers in southern California must convert to alternative low-VOC cleanup materials. -
Introduction to Printing Technologies
Edited with the trial version of Foxit Advanced PDF Editor To remove this notice, visit: www.foxitsoftware.com/shopping Introduction to Printing Technologies Study Material for Students : Introduction to Printing Technologies CAREER OPPORTUNITIES IN MEDIA WORLD Mass communication and Journalism is institutionalized and source specific. Itfunctions through well-organized professionals and has an ever increasing interlace. Mass media has a global availability and it has converted the whole world in to a global village. A qualified journalism professional can take up a job of educating, entertaining, informing, persuading, interpreting, and guiding. Working in print media offers the opportunities to be a news reporter, news presenter, an editor, a feature writer, a photojournalist, etc. Electronic media offers great opportunities of being a news reporter, news editor, newsreader, programme host, interviewer, cameraman,Edited with theproducer, trial version of Foxit Advanced PDF Editor director, etc. To remove this notice, visit: www.foxitsoftware.com/shopping Other titles of Mass Communication and Journalism professionals are script writer, production assistant, technical director, floor manager, lighting director, scenic director, coordinator, creative director, advertiser, media planner, media consultant, public relation officer, counselor, front office executive, event manager and others. 2 : Introduction to Printing Technologies INTRODUCTION The book introduces the students to fundamentals of printing. Today printing technology is a part of our everyday life. It is all around us. T h e history and origin of printing technology are also discussed in the book. Students of mass communication will also learn about t h e different types of printing and typography in this book. The book will also make a comparison between Traditional Printing Vs Modern Typography. -
Embodied Community and Embodied Pedagogy
ZINES, n°2, 2021 MATERIAL MATTERS: EMBODIED COMMUNITY AND EMBODIED PEDAGOGY Kelly MCELROY & Korey JACKSON Oregon State University Libraries and Press [email protected] [email protected] Abstract: In this essay, we outline how materiality can be a tool of critical pedagogy, leading to pleasure, vulnerability, and embodied learning in the classroom. Over the past four years, we have taught an honors colloquium to undergraduate students focused on self-publishing as a means to create social change. As we explore various publishing media, genres, and activist movements with our students, we combine traditional academic activities like scholarly reading and written analysis with informal hands-on craft time. Our students make collages, learn to use the advanced features on a photocopier, and collaborate on hectograph printing among other crafts, all as they begin to put together their own final DIY publication. Students regularly report that the hands-on activities are crucial to their learning, giving them new appreciation for the underground publications they read, through embodied experiences that can’t be replicated with a reading or a quiz. It also builds our community of learners, as we share ideas, borrow glue sticks, and chit-chat as we put our zines together. We will outline how we built and teach this course, placing it within our critical pedagogy – informed by bell hooks, Kevin Kumashiro, and Paulo Freire, among others – and how teaching this course has helped us incorporate embodiment into our other teaching. Keywords: embodied pedagogy, teaching, publishing. 58 Material Matters: Embodied Community and Embodies Pedagogy ZINES, n°2, 2021 INTRODUCTION Alison Piepmeier has argued that, “Zines’ materiality creates College, this course is one of a suite of course offerings community because it creates pleasure, affection, allegiance, and that highlight exploratory discovery and deep dives vulnerability” (2008, 230). -
Glossary of Flexographic Printing Terms
GLOSSARY OF FLEXOGRAPHIC PRINTING TERMS AA: Authors Alterations, changes other than corrections, made by a client after the proofing process has begun. AA's are usually charged to a client as billable time. Abrasion: Process of wearing away the surface of a material by friction. Abrasion marks: Marks on a photographic print or film appearing as streaks or scratches, caused by the condition of the developer. Can be partially removed by swabbing with alcohol. Abrasion resistance: Ability to withstand the effects of repeated rubbing and scuffing. Also called scuff or rub resistance. Abrasion test: A test designed to determine the ability to withstand the effects of rubbing and scuffing. Abrasiveness: That property of a substance that causes it to wear or scratch other surfaces. Absorption: In paper, the property which causes it to take up liquids or vapors in contact with it. In optics, the partial suppression of light through a transparent or translucent material. Acceptance sampling or inspection: The evaluation of a definite lot of material or product that is already in existence to determine its acceptability within quality standards. Accelerate: In flexographic printing, as by the addition of a faster drying solvent or by increasing the temperature or volume of hot air applied to the printed surface. Electrical - To speed rewind shafts during flying splices, and in taking up web slackness. Accordion Fold: Bindery term, two or more parallel folds which open like an accordion. Acetone: A very active solvent used in packaging gravure inks; the fastest drying solvent in the ketone family. Activator: A chemistry used on exposed photographic paper or film emulsion to develop the image. -
The Color Episode
Ask Gamblin - The Color Episode Antrese: Robert and Scott, thank you so much for being on the show. Robert Gamblin: It's great to be here. Thanks for having us back, Antrese. Scott Gellatly: Great to be here. Absolutely. Antrese: I'm super excited to have you guys on to answer these questions about color. And our first one is from James, and James has heard that modern oil paints actually have too much pigment as compared to traditional historic pigments. What are your thoughts on this? Robert Gamblin: Antrese, I love this question. I'm really glad that James brought it up. It gives us a chance at the beginning of this conversation to sort of put everything into kind of a historical perspective. It's true. The formula of today's colors have more pigment in them than at any time in the history of oil painting. That's true. Now the formula for the colors of today and the colors from historical periods. Both of those reflect what is expected of them. Now 200 years ago, or more, color was made and used in very close proximity. Perhaps it was made and used in the same room. The color was made to the texture that it was going to be used at. Robert Gamblin: So there was no need to make that paint any stiffer than the, very smooth painting that was done at that time paints were paintings were generally thinner than they are today. Multiple layers, those layers with very thin. And so the paint was made exactly to how the painter was going was going to use them.