Adaptive control of second page printing to reduce smear in an i

Details Adaptive control of second page printing to reduce smear in an i Adaptive control of second page printing to reduce smear in an i

1993-04-30

1996-02-06

Fuller, Benjamin R.

Incremental printing of symbolic information

Ink jet

Controller

347102, 101488, B41J 201, B41J 1142

Patent

active

054899265

ABSTRACT:
A high density graphics image can be printed without smearing by contact with a second page, without any unnecessary reduction of throughput. Throughput enhancement logic is inhibited during the printing of the second page for a variable delay related to the image density of the first page. The variable delay is calculated as a linear function of both the density (relative to a predetermined grid size) and the location if the densest portion of the first page, using coefficients which are different for different print modes. In one preferred embodiment, a maximum density is calculated by counting drops of ink in each of several overlapping grids, and the magnitude and location of the maximum density grid on a prior page is used to limit the throughput of a next page until a sufficient delay has elapsed to ensure that ink on the prior page will not be smeared when it comes into contact with the next page.

REFERENCES:
patent: 4469026 (1984-09-01), Irwin
patent: 4566014 (1986-01-01), Paranjpe et al.
patent: 5214442 (1993-05-01), Roller

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