System and method for variable toner output in output devices

Details System and method for variable toner output in output devices System and method for variable toner output in output devices

1997-04-25

1999-01-12

Lee, S.

Electrophotography

Image formation

Exposure

347131, 347254, 358298, 395109, G03G 1504, G06F 1500, B41J 2385

Patent

active

058600477

ABSTRACT:
A pixel matrix preferably containing nine pixels is analyzed to determine whether or not all of the image values for the pixels in the pixel matrix correspond to a full saturation level. If the image values do correspond to full saturation level, preferably the center pixel is produced using a variably reduced toner output. If all of the image values do not correspond to full saturation level, the center pixel is produced using conventional methods. The system of the preferred embodiment is comprised of an input buffer for storing the image values, a comparator for comparing the image values with a toner modification value to determine if the pixel or pixels should be produced using a variably reduced toner output. The pixels are then preferably stored temporarily in an output buffer and then sent to a memory to be produced.

REFERENCES:
patent: 4963989 (1990-10-01), Morton
patent: 5023632 (1991-06-01), Yamamoto et al.
patent: 5245355 (1993-09-01), Morton
patent: 5321430 (1994-06-01), Barnstead et al.
patent: 5381221 (1995-01-01), Mizoguchi et al.

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