Printing Methods Printing presses are variously configured, depending on the print method and on whether the machine is sheet fed or web fed light materials and those that are extensible or have poor dimensional stability must be web fed; the material is supplied from a roll and is usually rewound into a roll after it is printed Web-fed machines typically run faster, and large runs may be better on a Web-fed machine Some types of filling machines must be supplied with packaging material from a roll
Printing Methods Printing presses are variously configured, depending on the print method and on whether the machine is sheet fed or web fed. Light materials and those that are extensible or have poor dimensional stability must be web fed; the material is supplied from a roll and is usually rewound into a roll after it is printed. Web-fed machines typically run faster, and large runs may be better on a web-fed machine. Some types of filling machines must be supplied with packaging material from a roll
Printing Methods Most papers can be either web or sheet fed, in which case other factors must be considered for instance corrugated board and other stiff or rigid materials that cannot wrap around feed rolls must be sheet fed While in principle most art can be printed with four stations, printing presses with eight or more printing stations are not unusual. the added stations allow the printer more options and flexibility on how to produce exacting designs of the highest quality. The added stations have many uses, including these printing situations
Printing Methods Most papers can be either web or sheet fed, in which case other factors must be considered. For instance, corrugated board and other stiff or rigid materials that cannot wrap around feed rolls must be sheet fed. While in principle most art can be printed with four stations, printing presses with eight or more printing stations are not unusual. The added stations allow the printer more options and flexibility on how to produce exacting designs of the highest quality. The added stations have many uses, including these printing situations:
Printing Methods o fluorescent and metallic colors that cannot be printed with standard cmyK inks Line art, or process art combined with line art, that requires a large number of Pms colors Double applications of the same color needed to develop desired depth Corporate colors that are often specified pms or proprietary formulations Protective or decorative coatings such as high-gloss lacquers or varnishes Fluorescent and metallic colors that cannot be printed with standard cmyK inks
Printing Methods ⚫ Fluorescent and metallic colors that cannot be printed with standard CMYK inks ⚫ Line art, or process art combined with line art, that requires a large number of PMS colors. ⚫ Double applications of the same color needed to develop desired depth ⚫ Corporate colors that are often specified PMS or proprietary formulations ⚫ Protective or decorative coatings such as high-gloss lacquers or varnishes·Fluorescent and metallic colors that cannot be printed with standard CMYK inks
Printing Methods o Difficult to duplicate colors such as orange, dark browns and some greens o Exceptionally bright color, if needed o Large solid (line art) areas Pattern-applied adhesives The printing process that is selected for a particular task is dependent on many factors o The volume or number of impressions desired(10,000 or 10 million impressions)
Printing Methods ⚫ Difficult to duplicate colors such as orange, dark browns and some greens ⚫ Exceptionally bright color, if needed ⚫ Large solid (line art) areas ⚫ Pattern-applied adhesives. The printing process that is selected for a particular task is dependent on many factors: ⚫ The volume or number of impressions desired (10,000 or 10 million impressions)
Printing Methods o The art type and desired effect (line art, process color, vignettes, metallic sheen) The substrate(paper, plastic film, surface quality, colored, porous, flexible, rigid) o The physical shape of the substrate(roll stock, sheets discrete items, round irregular shape) e Special package process or use conditions(chemical resistance, thermal resistance)
Printing Methods ⚫ The art type and desired effect (line art, process color, vignettes, metallic sheen) ⚫ The substrate (paper, plastic film, surface quality, colored, porous, flexible, rigid) ⚫ The physical shape of the substrate (roll stock, sheets, discrete items, round, irregular shape) ⚫ Special package process or use conditions (chemical resistance, thermal resistance)