1 Do one of the following:
• If the image is in color, choose Image > Mode > Grayscale. Then choose Image > Mode > Bitmap.
• If the image is grayscale, choose Image > Mode > Bitmap.
2 For Output, enter a value for the output resolution of the Bitmap-mode image, and choose a unit of measurement. By default, the current image resolution appears as both the input and the output resolutions.
3 Select one of the following bitmap conversion methods:
• 50% Threshold, Pattern Dither, or Diffusion Dither to use a predefined conversion method. (See "Specifying predefined Bitmap conversion methods" on page 95.)
• Halftone Screen to simulate the appearance of halftone dots in the converted image. (See "Specifying halftone screens for Bitmap-mode images" on page 96.)
• Custom Pattern to simulate the appearance of a custom halftone screen in the converted image. (See "Specifying custom halftone screens for Bitmap-mode images" on page 97.)
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