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Staedtler's products include: Noris, Mars Lumograph (pencils); Mars plastic (erasers); 925-series (mechanical pencils), Mars micro (pencil leads); Triplus (fineliners); Textsurfer (highlighters); Lumocolor (markers, colored pencils etc.). The following chart contains all the Staedtler product lines: [12] Staedtler's Mars plastic eraser product
A mechanical pencil or clutch pencil is a pencil with a replaceable and mechanically extendable solid pigment core called a "lead" / ˈ l ɛ d /. The lead , often made of graphite , is not bonded to the outer casing, and the user can mechanically extend it as its point is worn away from use.
That same year Rotring launched its first drawing board, and the "Tikky" mechanical pencil was released in 1979. The "Art Pen", a fountain pen suitable for calligraphy , was launched in 1984. During the decade, Rotring set new subsidiaries in other European countries, while the "600" mechanical pencil was introduced in 1989.
Attached eraser on the left; Pencil lead on the right. On 30 March 1858, Hymen Lipman received the first patent for attaching an eraser to the end of a pencil. [35] In 1862, Lipman sold his patent to Joseph Reckendorfer for $100,000, who went on to sue pencil manufacturer Faber-Castell for infringement. [36] In Reckendorfer v.
Erasers may be free-standing blocks (block and wedge eraser), or conical caps that can slip onto the end of a pencil (cap eraser). A barrel or click eraser is a device shaped like a pencil, but instead of being filled with pencil lead , its barrel contains a retractable cylinder of eraser material (most commonly soft vinyl).
In 1979, Paper Mate introduced the Eraser Mate or Erasermate brand. [6] In the 1980s, Paper Mate invented the Replay 2000 pen, with erasable ink and a rubber at one end. In 2010, Paper Mate introduced "environmentally friendly" biodegradable pens, pencils and erasers. [7] In 2012, Paper Mate introduced the brand InkJoy. [8]