Alles wichtige zum Flachdruckverfahren: Geschichte & Prinzip des Offsetdrucks ✓ Funktionsweise & Aufbau einer Offsetdruckmaschine verständlich erklärt.
www.print24.com/de/blog/2017/01/offsetdruck-der-umfassende-gesamtueberblick/
O documento descreve o processo de flexografia, incluindo sua definição como um processo de impressão rotativo direto usando placas de borracha em relevo alto e tintas líquidas. Detalha as características das matrizes de borracha, tintas, suportes impressos, equipamentos e mercados alvo.
The document discusses various digital printing technologies, focusing on inkjet printing methods. It describes two main inkjet technologies: continuous inkjet (CIJ) and drop-on-demand (DOD). CIJ uses a continuous stream of ink broken into droplets through pressure, while DOD only deposits ink droplets when needed in response to digital signals. Common DOD methods are thermal bubble jet and piezoelectric, with the latter providing higher resolution and suitability for wider ranges of inks. The technologies each have advantages and limitations for different applications like textile printing.
This document discusses different types of surface entities used in CAD/CAM systems. It describes analytic surface entities like planes, ruled surfaces, surfaces of revolution, and tabulated cylinders. It also covers synthetic surface entities, including bicubic Hermite spline surfaces, B-spline surfaces, rectangular and triangular Bezier patches, rectangular and triangular Coons patches, and Gordon surfaces. Plane surfaces are defined by three points, ruled surfaces interpolate between two boundary curves, and surfaces of revolution rotate a curve around an axis. Bezier and B-spline surfaces can approximate input data without passing through all points.
WORKSHOP TECHNOLOGY-Lathe and operation.Learnwithus2
1. A lathe is a machine tool that removes metal from a workpiece to create a desired shape and size by rotating the workpiece against various cutting tools. It operates on the principle of a rotating workpiece and a fixed cutting tool.
2. The main parts of a lathe include the bed, headstock, tailstock, and carriage. The bed provides the foundation, the headstock holds and rotates the workpiece, the tailstock supports the other end of the workpiece, and the carriage supports the cutting tool.
3. Common lathe operations include turning, facing, tapering, contouring, threading, boring, drilling, chamfering, cutoff,
O documento discute vários tipos de acabamentos gráficos que podem ser aplicados em materiais impressos para melhorar a qualidade visual e durabilidade, incluindo verniz UV, relevo seco, laminação, gofragem e tintas raspadinhas.
The document discusses CNCMachine Reference Point, which refers to a fixed point inside the CNC machine whose position values are stored. When the CNC machine is turned on, it does not know its current axis position. Performing a CNC Zero Return or Reference Point Return takes the machine axes to the fixed Reference Point, where limit switches signal the reached position and allow the control to update the current position values. The G28 G-code command can be used in Fanuc CNC controls to automatically return all axes to the Reference Point.
A rotogravura é um processo de impressão direta onde a matriz cilíndrica de baixo relevo transfere tinta para o papel por meio de rotação. É usado principalmente para impressão de revistas, jornais e embalagens flexíveis devido à alta velocidade e qualidade de impressão. A história da rotogravura moderna remonta aos trabalhos de Karl Klic em meados do século XIX e seu aperfeiçoamento por Thomas Bell na década de 1780.
This document provides an overview of fluid kinematics. It defines fluid kinematics as the study of fluid motion without considering pressure forces. It describes Lagrangian and Eulerian methods for analyzing fluid flow, and defines different types of flows including steady/unsteady, uniform/non-uniform, laminar/turbulent, compressible/incompressible, rotational/irrotational, and one-dimensional/two-dimensional/three-dimensional flows. It also discusses flow visualization techniques like streamlines, pathlines, and streaklines.
O documento descreve o processo de flexografia, incluindo sua definição como um processo de impressão rotativo direto usando placas de borracha em relevo alto e tintas líquidas. Detalha as características das matrizes de borracha, tintas, suportes impressos, equipamentos e mercados alvo.
The document discusses various digital printing technologies, focusing on inkjet printing methods. It describes two main inkjet technologies: continuous inkjet (CIJ) and drop-on-demand (DOD). CIJ uses a continuous stream of ink broken into droplets through pressure, while DOD only deposits ink droplets when needed in response to digital signals. Common DOD methods are thermal bubble jet and piezoelectric, with the latter providing higher resolution and suitability for wider ranges of inks. The technologies each have advantages and limitations for different applications like textile printing.
This document discusses different types of surface entities used in CAD/CAM systems. It describes analytic surface entities like planes, ruled surfaces, surfaces of revolution, and tabulated cylinders. It also covers synthetic surface entities, including bicubic Hermite spline surfaces, B-spline surfaces, rectangular and triangular Bezier patches, rectangular and triangular Coons patches, and Gordon surfaces. Plane surfaces are defined by three points, ruled surfaces interpolate between two boundary curves, and surfaces of revolution rotate a curve around an axis. Bezier and B-spline surfaces can approximate input data without passing through all points.
WORKSHOP TECHNOLOGY-Lathe and operation.Learnwithus2
1. A lathe is a machine tool that removes metal from a workpiece to create a desired shape and size by rotating the workpiece against various cutting tools. It operates on the principle of a rotating workpiece and a fixed cutting tool.
2. The main parts of a lathe include the bed, headstock, tailstock, and carriage. The bed provides the foundation, the headstock holds and rotates the workpiece, the tailstock supports the other end of the workpiece, and the carriage supports the cutting tool.
3. Common lathe operations include turning, facing, tapering, contouring, threading, boring, drilling, chamfering, cutoff,
O documento discute vários tipos de acabamentos gráficos que podem ser aplicados em materiais impressos para melhorar a qualidade visual e durabilidade, incluindo verniz UV, relevo seco, laminação, gofragem e tintas raspadinhas.
The document discusses CNCMachine Reference Point, which refers to a fixed point inside the CNC machine whose position values are stored. When the CNC machine is turned on, it does not know its current axis position. Performing a CNC Zero Return or Reference Point Return takes the machine axes to the fixed Reference Point, where limit switches signal the reached position and allow the control to update the current position values. The G28 G-code command can be used in Fanuc CNC controls to automatically return all axes to the Reference Point.
A rotogravura é um processo de impressão direta onde a matriz cilíndrica de baixo relevo transfere tinta para o papel por meio de rotação. É usado principalmente para impressão de revistas, jornais e embalagens flexíveis devido à alta velocidade e qualidade de impressão. A história da rotogravura moderna remonta aos trabalhos de Karl Klic em meados do século XIX e seu aperfeiçoamento por Thomas Bell na década de 1780.
This document provides an overview of fluid kinematics. It defines fluid kinematics as the study of fluid motion without considering pressure forces. It describes Lagrangian and Eulerian methods for analyzing fluid flow, and defines different types of flows including steady/unsteady, uniform/non-uniform, laminar/turbulent, compressible/incompressible, rotational/irrotational, and one-dimensional/two-dimensional/three-dimensional flows. It also discusses flow visualization techniques like streamlines, pathlines, and streaklines.
There are two main types of mottling that can occur in printing:
1. Optical mottling, usually seen with high brightness glossy papers, makes the paper look dirty due to unwanted variations in optical properties.
2. Water induced mottling occurs when water from previous printing units does not fully absorb into the coating before ink transfer, or when ink cannot fully emulsify surface water.
Backtrap mottling is caused by an uneven pore structure in the coating layer, resulting in variations in the thickness of set and unset ink that follows the coating profile. It is always present to some degree but usually well controlled.
This document discusses section views in engineering drawings. It begins with an introduction and overview of section views and their purposes. Then it discusses terminology and common practices used in section views, including cutting planes, cutting plane lines, and section lines. It describes different types of section views such as full sections, offset sections, half sections, broken-out sections, revolved sections, and removed sections. Examples are provided to illustrate these different types of section views. The document concludes with guidelines for dimensioning features in section views.
This document provides information about leveling and the equipment used for a leveling fieldwork. It begins with definitions of leveling terms and descriptions of leveling methods. It then outlines the key pieces of leveling equipment including an automatic level, tripod, optical plummet, level rod, and plumb bob. The objectives and site for the leveling fieldwork are introduced. The document provides details on performing leveling using both the height of collimation and rise/fall methods. It concludes with a brief discussion and references section.
This document provides an overview of milling machines, including their basic functions, classifications, and applications. It discusses the purposes of milling machines in producing flat and contoured surfaces. Milling machines are classified based on their purpose, configuration, spindle orientation, and degree of automation/production rate. Common types include knee type, bed type, planer type, and rotary table type machines. CNC milling machines offer increased flexibility, reduced changeover times, and ability to machine complex geometries compared to conventional machines.
Este documento habla sobre los diferentes tipos de rasquetas, sus ángulos de operación, presión y colocación adecuadas. También cubre la variación de dosificación, rasquetas especiales, el estado de desgaste de las rasquetas y causas comunes de defectos como rayas. Recomienda seleccionar el tipo de rasqueta adecuado, mantener la viscosidad de la tinta controlada y filtrar la tinta para obtener buenos resultados de impresión.
El huecograbado es una técnica de impresión donde las imágenes se tallan en planchas de metal. Las zonas impresoras están formadas por celdillas pequeñas que atrapan la tinta líquida. El proceso utiliza un cilindro grabado con el diseño y tintas no grasas que se transfieren a la superficie de impresión.
Contours are lines on a map connecting points of equal elevation above sea level. They provide information about the height of land, difference in height between contours, slope of land determined by contour spacing, and shape of landforms. Contour patterns indicate slope - steep slopes have close contours, gentle slopes have widely spaced contours, and concave and convex slopes have variable spacing that reveals the landform shape.
There are two main types of mottling that can occur in printing:
1. Optical mottling, usually seen with high brightness glossy papers, makes the paper look dirty due to unwanted variations in optical properties.
2. Water induced mottling occurs when water from previous printing units does not fully absorb into the coating before ink transfer, or when ink cannot fully emulsify surface water.
Backtrap mottling is caused by an uneven pore structure in the coating layer, resulting in variations in the thickness of set and unset ink that follows the coating profile. It is always present to some degree but usually well controlled.
This document discusses section views in engineering drawings. It begins with an introduction and overview of section views and their purposes. Then it discusses terminology and common practices used in section views, including cutting planes, cutting plane lines, and section lines. It describes different types of section views such as full sections, offset sections, half sections, broken-out sections, revolved sections, and removed sections. Examples are provided to illustrate these different types of section views. The document concludes with guidelines for dimensioning features in section views.
This document provides information about leveling and the equipment used for a leveling fieldwork. It begins with definitions of leveling terms and descriptions of leveling methods. It then outlines the key pieces of leveling equipment including an automatic level, tripod, optical plummet, level rod, and plumb bob. The objectives and site for the leveling fieldwork are introduced. The document provides details on performing leveling using both the height of collimation and rise/fall methods. It concludes with a brief discussion and references section.
This document provides an overview of milling machines, including their basic functions, classifications, and applications. It discusses the purposes of milling machines in producing flat and contoured surfaces. Milling machines are classified based on their purpose, configuration, spindle orientation, and degree of automation/production rate. Common types include knee type, bed type, planer type, and rotary table type machines. CNC milling machines offer increased flexibility, reduced changeover times, and ability to machine complex geometries compared to conventional machines.
Este documento habla sobre los diferentes tipos de rasquetas, sus ángulos de operación, presión y colocación adecuadas. También cubre la variación de dosificación, rasquetas especiales, el estado de desgaste de las rasquetas y causas comunes de defectos como rayas. Recomienda seleccionar el tipo de rasqueta adecuado, mantener la viscosidad de la tinta controlada y filtrar la tinta para obtener buenos resultados de impresión.
El huecograbado es una técnica de impresión donde las imágenes se tallan en planchas de metal. Las zonas impresoras están formadas por celdillas pequeñas que atrapan la tinta líquida. El proceso utiliza un cilindro grabado con el diseño y tintas no grasas que se transfieren a la superficie de impresión.
Contours are lines on a map connecting points of equal elevation above sea level. They provide information about the height of land, difference in height between contours, slope of land determined by contour spacing, and shape of landforms. Contour patterns indicate slope - steep slopes have close contours, gentle slopes have widely spaced contours, and concave and convex slopes have variable spacing that reveals the landform shape.
1. Der Offsetdruck – Grundlagen
Aufbau- und Funktionsweise von Offsetdruckmaschinen
2. Inhalt
1. Der Begriff – Erklärung Offsetdruck
2. Aufbau Offsetdruckmaschine
3. Prinzip Offsetdruckverfahren
4. Funktionsweise Offsetdruck
5. Links – Wissenswertes zum Offsetdruck
ODER Klick hier → Umfassender Gesamtüberblick zum Druckverfahren Offsetdruck
3. Früher: Offsetdruck basiert auf dem Steindruckverfahren (Lithografie)
›› Englisch “to set off” = absetzen/ übertragen
›› Funktioniert nach dem Prinzip der Abstoßung von Wasser und Öl
›› Entwickelt sich vom direkten zum indirekten Flachdruckverfahren
›› Schnelle Vervielfältigung in hoher Qualität
Heute: Mit ca. 60 % das meistgenutzte Verfahren der Druckbranche
1. Erklärung Offsetdruck
7. Druckform wird zuerst aufgeraut und hat eine hydrophile Oberfläche
›› hydrophil = Wasser annehmend und Öl abstoßend
›› dies werden die nicht druckenden Bereiche auf der Druckplatte
Druckform wird dann mit einer lipophilen Fotopolymerschicht überzogen
›› lipophil = Wasser abstoßend und Öl annehmend
›› dies werden die druckenden Bereiche auf der Druckplatte
Flachdruck → Hydrophile und lipophile Bereiche liegen in einer Ebene
3. Prinzip Offsetdruckverfahren
9. Vierfarbdruck → subtraktive Farbmischung aus den Prozessfarben CMYK
›› je ein Druckwerk bzw. Druckturm pro Farbe
›› bei mehr als 4 Druckfarben zusätzliche Sonderfarben möglich
Rotationsdruckverfahren → Druckzylinder- oder Druckwalzen-System
›› je ein Druckwerk bzw. Druckturm pro Farbe
›› Papierzufuhr: Papierbögen (Bogenoffset) oder Papierbahn (Rollenoffset)
3. Prinzip Offsetdruckverfahren
10. 4. Funktionsweise Offsetdruck
1 ... mit eingespannter Druckplatte
2 ... mit Feuchtmittel, Feuchtwanne und -walzen
3 ... mit Druckfarbe, Farbwanne und -walzen
4 ... nimmt Farbe und Feuchtmittel auf
5 Bedruckstoff (z. B. Papier) nimmt Druckfarbe auf
6 ... läuft entgegengesetzt zu 4
→ 5 durchläuft nacheinander alle Druckwerke
Druckwerk der Offsetdruckmaschine
2
3
5
4
1
6
11. Benetzen der Druckplatte auf dem Druckformzylinder (1)
›› mit Feuchtmittel in 2 → haftet nur auf hydrophilen Bereichen der Platte
›› mit Druckfarbe in 3 → haftet nur auf lipophilen Bereichen der Platte
Indirekter Druck
›› Übertragung der Druckfarbe von 1 auf 4 und danach erst auf 5
›› Farbauftrag nur möglich durch den Gegendruck von 6
›› dabei wird 5 durch die gegenläufige Rotation von 4 und 6 transportiert
4. Funktionsweise Offsetdruck
12. 5. Links – Wissenswertes zum Offsetdruck
Neugierig geworden? Hier findest du weitere Themen zum Offsetdruck
›› Offsetdruck – Der Umfassende Gesamtüberblick
→ Geschichte, Merkmale, Vorteile, Raster, Bogen- vs. Rollenoffset ...
›› Wie sind Farben für den Offsetdruck anzulegen?
›› Von der Bildschirmdarstellung bis zum Druck – was ist zu beachten?
›› Welche Drucklacke gibt es und wie wirken sie?