Moving up to Level 2
Article Abstract:
Adobe Systems' release of the PostScript Level 2 page description language (PDL) brings new features and full compatibility to publishing software users. The first major revision of the PDL includes the entire PostScript Level One language but also provides new means of handling color, better file compacting, and faster ways of printing. Level 2 incorporates the cyan, magenta, yellow and black (CMYK) color model, new font technology, Display PostScript extensions, color image support for red, green, and blue (RGB) and CMYK images. New features include device-independent color models, improved half-toning algorithms for color separation, dynamic memory allocation, forms and form caching, patterns and pattern caching, filters for data compression and decompression, and improved support for printer-specific features such as duplex printing and multiple paper trays. Overall, users need not rush out and buy Level 2 machines, but Level 2 printer drivers may enhance performance for Level 1 machines.
Publication Name: Publish
Subject: Publishing industry
ISSN: 0897-6007
Year: 1991
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Honey, I shrunk the TIFFS: JPEG products cut Mac files down to size
Article Abstract:
Several Joint Photographic Experts Group (JPEG)-compliant products, already on the market, are described and compared. Products mentioned include Adobe Photoshop 2.0.1, $895, from Adobe Systems Inc; Alice-DOS 1.2, $195, or $1,645 with an H350 Accelerator, from Telephoto Communications Inc; Colorsqueeze, $179, from Eastman Kodak Co; ImagePak, $399, from RasterOps; ImagePrep 4.0, $149, Computer Presentations Inc; ImpressIt, $159, from Radius Inc; LeadView 1.7, $129, from Lead Technologies; LeadView 255, $1,495, also from Lead Technologies; PicturePress 2.0, $199, or $999 with an accelerator, from Storm Technologies; Picture Packer 3.5, $99, or $595 with an accelerator; SuperSqueeze, $899, from SuperMac Technology; and VT-Compress for Windows 1.1, $259, from Xing Technology Corp. Photoshop 2.0.1, PicturePress 2.0 and ImpressIt 1.1 are especially recommended.
Publication Name: Publish
Subject: Publishing industry
ISSN: 0897-6007
Year: 1992
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Compressed for time; compressing images for the World Wide Web is easy if you know your options
Article Abstract:
Image compression is essential for publishing high density data images such as color photographs on the World Wide Web. Web browsers currently support Joint Photographic Expert Group (JPEG) and CompuServe Graphics Interchange Format (GIF) image formats. GIF typically performs loseless compression, which means that the compressed image is identical to the original image. JPEG performs lossy compression, meaning that the compressed image permanently drops some of the image data, usually in undetectable amounts. JPEG can be used to send larger files faster but at the sacrifice of quality. GIF has the advantage of being a de facto standard. All graphical Web browsers support and can therefore download GIF images. JPEG is an International Standards Organization-certified standard but is largely unused since it is not necessarily the best technique.
Publication Name: Publish
Subject: Publishing industry
ISSN: 0897-6007
Year: 1996
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