1. What is grammage?
Paper grammage refers to the paper density, i.e. the thickness of the sheets. Grammage is expressed in grams per square meter (g/m2) or GSM. Typical office paper has 80 g/m2
2. What is typesetting?
Typesetting is simply explained as the physical arrangement of text and images in preparation for print. Typesetting usually involves a designer or a typesetter to ensure that the arrangement and size of the text is consistent and appropriate. Not typesetting correctly can result in obvious and unappealing flaws.
3. What is a vector image?
There are two different types of images – vector and raster. Raster images use many coloured blocks (pixels) to form a complete image. JPEGs, GIFs and PNGs are the most used raster image types. Most images you see on the web like photos are raster images. Because they are built up using a set number of pixels, if you were to try and make the image bigger you will lose quality – the pixels will become big and your image will be distorted.
Vector images, on the other hand, are built using a mathematical formula instead of fixed colour blocks. This allows the image to expand to any size without loss of quality. Common vector file types are .AI, .PDF and .PSD. Vectors are ideal for images such as your company logo and brand graphics – having these stored as vector means they can be printed at any size – from business cards to billboards.
4. What is high-resolution?
Non-vector images use many coloured blocks (pixels) to form a complete image. JPEGs, GIFs and PNGs are the most common types. Resolution refers to the number of coloured blocks per inch of image. This is referred to as Dots Per Inch (DPI). The higher the number of dots, the clearer an image will be and the larger it can be printed without distortion. The average print resolution is 300DPI.
5. What is a continuous or dot-matrix printer?
A dot-matrix printer is a specific type of printer that uses a print head that moves back-and-forth on the page and prints by impact – striking an ink-soaked cloth ribbon against the paper (Similar to a typewriter). The paper is a continuous perforated sheet that is fed through the printer using the holes on the sides of the ream.
Although dot-matrix printers are often seen as old fashioned or out of date, they are very durable and are perfect for invoicing and warehouse packing/picking slips where multiple copies are required.
6. What is the difference between Litho and Digital Printing?
Litho printing uses wet ink that is applied to printing plates to print. Digital printing uses toners on a press – similar to the office printers you already know. Digital printing is better suited to shorter print runs while litho printing is ideal for longer runs and higher quantities of print. The setup costs for litho printing are generally higher than digital as plates need to be prepared, but once this is done the cost per copy is usually lower.