Choosing paper

The LaserWriter 12/640 PS prints on standard laser-quality paper (16- to 28- pound stock). For the best results, Apple recommends 20-pound stock. The printer can accept stock of up to 32 pounds from the multipurpose tray. You can also expect excellent results on most colored and textured papers.

The LaserWriter 12/640 PS produces high-quality transparencies for overhead projection. Medium-weight photocopier transparencies work best. If you experience difficulties when attempting to print transparencies with automatic feed, use manual feed instead.

WARNING Do not use heat-transfer (thermal) transparencies in the LaserWriter 12/640 PS. They will not print properly and may separate in the printer.

To avoid paper problems, keep the following potential trouble sources in mind:

mTemperature Some letterheads are printed with low-temperature dyes that vaporize and smear at the temperatures inside the printer. Some glossy, coated letterheads may lose their coating in the printer. Similarly, some envelopes may seal or come unglued during printing. Using high-quality stationery and envelopes should ensure satisfactory results.

mPaper texture The LaserWriter 12/640 PS may not print well on rough or highly textured paper. Try a few sheets to test the quality.

mPaper finish The LaserWriter 12/640 PS may not print well on some papers with a glossy finish. Again, test a few sheets of any unusual paper stock you wish to use.

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Apple 12/640PS manual Choosing paper