Effective Graphing for Cartographers

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Map Production Techniques (The last 3 chapters in the book) This topic will cover the distribution of the map product to others, however it often affects the design of the map itself. Paper Online

Planning for Production Color Model CMYK for printing Most maps are designed on a computer screen Realize that a conversion must take place to convert screen colors to print.

Printing (Desktop) Types of Printers Laser Inkject Plotter Modestly priced Require a warm up period Laser diodes project an image onto a photoreceptor that creates a electrically charged latent image on the surface. The toner is applied to the charged surface and “sticks” due to the electric charge. Paper is then applied to the surface. Finally it is heated and pressed to fuse it to the paper. Each ink is applied separately as CMYK Dots are the smallest unit Inkject Plotter Dye-sublimation printers

Printing (Desktop) Types of Printers Laser Inkject Plotter Ink is propelled on the paper through a print head. Droplets of the color primaries as placed on the paper. Can bleed with low quality paper. Higher maintainace costs Plotter Dye-sublimation printers

Printing (Desktop) Types of Printers Laser Inkjet Plotter In the past, a plotter was a large format device that printed using a set of pens to draw the image on the paper Very good for CAD drawings Today it simply refers to a large format Inkjet printer. Dye-sublimation printers

Printing (Desktop) Types of Printers Laser Inkjet Plotter Dye-sublimation printers Used for high quality printers (less frequently on the desktop) Dye is stored in solid form, during printing it is heated to the point it turns directly into a gas. The gas is diffused onto the paper and solidifies. Usually uses a clear overcoat to prevent discoloration.

Commercial Printing Letterpress – relief printing Oldest printing method The printed surface is engraved as a mirror image of what needs to be printed. Wood was the primary medium originally Lines had to be thick Today metal is used Metal is coated in some places, exposed to special light. The areas that are not coated are washed away.

Commercial Printing Intaglio – Engraving Plate is etched Ink is placed on the plate and then cleaned Ink stays in wells Paper is applied to the plate

Commercial Printing Lithography - Planar Introduced in 1796 by Alois Senefelder This printing method relies on the fact that water and oil don’t mix Printing surface has some oil friendly places and some water friendly places Ink is applied and sticks to the oil friendly places.

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