Image forming device

Details Image forming device Image forming device

1996-08-22

1998-04-14

Coles, Sr., Edward L.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358501, 358298, 358524, 358535, H04N 146

Patent

active

057403325

ABSTRACT:
The shift register 43Y is written with four bits of data for recording dots of yellow color, the shift register 43M is written with four bits of data for recording dots of magenta color, the shift register 43C is written with four bits of data for recording dots of cyan color, and the shift register 43Bk is written with four bits of data for recording dots of black color. The recording head 29 is scanned relative to the recording paper 33 in dot intervals D in a scanning direction. In the recording head 29, the recording units 30Y, 30M, 30C, and 30Bk for recording the four colors are aligned in the scanning direction with an interval P equal to a sum of one dot interval D and a multiple of four dot intervals 4D. With this arrangement, the shift registers 43 are supplied with the four bits of data at timings shifted from one another by an amount corresponding to one recording timing period T. Each recording unit will select and record one bit of data out of the four bits of data stored in the corresponding shift register. Positions in the shift registers, from which the respective recording units select their data, are shifted from one another. Accordingly, data processes for the four colors are distributed uniformly amongst all the recording timings.

REFERENCES:
patent: 4777536 (1988-10-01), Kato
patent: 4780006 (1988-10-01), Hamano
patent: 5111217 (1992-05-01), Zeise
patent: 5124726 (1992-06-01), Morton et al.
patent: 5300960 (1994-04-01), Pham et al.
patent: 5347617 (1994-09-01), Webb et al.

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