Compatibility with an operating system is maintained, and a high-quality print image is efficiently previewed with a simple arrangement and small memory area. A printer driver program executed by a host computer (15) which controls the operation of a printer (7) adopts a processing arrangement in which a print processor (5) is interposed between a preview request from a previewer (8) and generation of image data by a printer graphic driver (6). This processing arrangement causes the printer graphic driver (6) to create image data for a preview display. The created image data is transferred to the previewer (8) in accordance with an instruction from the print processor (5).

 
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> Method of beveling an ophthalmic lens blank, machine programmed therefor, and computer program

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