Hybrid ink jet printer with alignment of scanning printheads to

Details Hybrid ink jet printer with alignment of scanning printheads to Hybrid ink jet printer with alignment of scanning printheads to

1996-03-29

1998-05-12

Tso, Edward

Incremental printing of symbolic information

Ink jet

Ejector mechanism

B41J 221

Patent

active

057513112

ABSTRACT:
An ink jet printer is configured in a hybrid architecture wherein a full width printbar is combined with a partial width color scanning assembly to provide the capability of selectively printing in black only or, alternately, into producing color prints by operating the color scanning assembly exclusively. The cost of the hybrid system, when compared to a full width color system using four full width printbars, is greatly reduced. The partial width scanning assembly is mounted on a carriage which is stepped along a printing swath width, the sum of the incremental scan steps equaling the width of a full width printbar. A dimensional mismatch between the printbar and the scanning printhead in the direction perpendicular to paper motion (width direction) could result in image degradation because of misalignment of color drops to black drops. The mismatch could result in manufacturing errors in either the printhead width and/or the width of the carriage. It is proposed to identify the total mismatch as a distance .DELTA.l prior to print operation and to adjust the incremental steps of carriage scan motion so as to change each incremental step by .DELTA.l divided by the number of steps. Thus, the mismatch is effectively spread over the entire print swath and does not become visually perceptible in the output image.

REFERENCES:
patent: Re32572 (1988-01-01), Hawkins et al.
patent: 4774530 (1988-09-01), Hawkins
patent: 4829324 (1989-05-01), Drake et al.
patent: 4999077 (1991-03-01), Drake et al.
patent: 5057859 (1991-10-01), Ishimaru
patent: 5099256 (1992-03-01), Anderson
patent: 5136305 (1992-08-01), Ims
patent: 5160945 (1992-11-01), Drake
patent: 5192959 (1993-03-01), Drake et al.
patent: 5198054 (1993-03-01), Drake et al.
patent: 5221397 (1993-06-01), Nystrom
patent: 5257043 (1993-10-01), Kneezel
patent: 5270738 (1993-12-01), Takahashi et al.
patent: 5280308 (1994-01-01), Takahashi et al.
patent: 5343227 (1994-08-01), Hirosawa et al.
patent: 5365645 (1994-11-01), Walker et al.
patent: 5402527 (1995-03-01), Bigby et al.
patent: 5534895 (1996-07-01), Lindenfelser et al.
patent: 5581284 (1996-12-01), Hermanson
patent: 5587730 (1996-12-01), Karz

Affiliated with

Also associated with

Rating

Hybrid ink jet printer with alignment of scanning printheads to does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Hybrid ink jet printer with alignment of scanning printheads to , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hybrid ink jet printer with alignment of scanning printheads to will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-986070