Method of and system for reproducing or transmitting half-tone images
Method of processing medium tone picture
Method and apparatus for generating a gray scale with a high speed thermal ink jet printer Patent #: 4503444
ApplicationNo. 06/899358 filed on 08/25/1986
US Classes:358/3.02, Print element property varied to represent gray level347/131, Dot density or dot size control (e.g., halftone)347/15, Creating plural tones358/3.03Error diffusion in gray level or halftone generation
ExaminersPrimary: Goldberg, E. A.
Assistant: Foster, Patrick W.
Attorney, Agent or Firm
International ClassH04N 1/405 (20060101)
AbstractThe capability of varying sizes of a dot in a printer is fully exploited to provide a gray scale image of superior quality. Errors in gray level are used to modulate the sizes of the dots in producing the image.