Printing is on a ‘silver coloured’ tinplate steel or on a ‘grey coloured’ TFS steel using the OFFSET printing method. To reach best print quality send scalable vector graphic files (*.ai, *.fh, *.eps). This means the graphics consist of vectors or paths. Vector graphics being scalable make possible a clean high quality print. When using Photoshop separate layers for every colour should be created. Embedded images and files should be sent with the document. When working with Corel Draw the file should be exported in the illustrator format (*.ai). When only images or scans are available these should be saved as in *.tiff or *.eps format with a resolution of 330ppi. Monochrome images or line art should have a resolution of 1200ppi. Photorealistic graphics should have a minimum 300ppi in four colour CMYK mode. The print layouts to prepare artwork for ring pull bottle caps and crown caps are available by clicking the links below: Fonts that are used in the artwork must be sent with the files. Send the font suitcase or save the fonts as pathes or curves or outlines depending on software used. Colours are printed as spot colours or process colours or a combination of spot & process. Describe the spot colours with a Pantone PMS colour number and inform the process colours using the 4-colour system CMYK. Colours are printed either as an opaque ink (like on paper) or as a transparent ink (metalic / grain of metal visible). Let us know how the decoration is to be printed. A text, not higher than 2 mm, may be stationed around the cap skirt. Click the photo to see an enlarged image. Ring Crown caps and crown corks with inside printings for market promotions is an option. Please do contact us with your questions. Source.