Typewriting machines – Including control of format by programmed-control-system
Patent
1988-01-19
1990-05-29
Sewell, Paul T.
Typewriting machines
Including control of format by programmed-control-system
400 61, 400121, B41J 302
Patent
active
049290991
ABSTRACT:
A predetermined window height at least three times the height of the normal printed characters can be printed in a single horizontal sweep of the printhead across the page. A page of character oriented data is first sorted vertically; the data is then sequentially processed into a "print window" of horizontally sorted characters until a character is reached that will not fit within the current print window. The symbolic data in the print window is converted into bit mapped image data only slightly in advance of the current printhead position. The average throughout is increased by permitting the velocity of the printhead to vary as a function of the complexity of the image formation process. For a thermal process, this is accompanied by an appropriate adjustment in the current passing through the activated printhead electrodes. The vertical positioning of the pixels within the print window is varied to better distribute head wear.
REFERENCES:
patent: 3938641 (1976-02-01), Fulton
patent: 3990559 (1976-11-01), Martin
patent: 4103066 (1978-07-01), Brooks et al.
patent: 4345845 (1982-08-01), Bohnhoff et al.
patent: 4400100 (1983-08-01), Aviram et al.
patent: 4539653 (1985-09-01), Bartlett
patent: 4627749 (1986-12-01), Meo
patent: 4655622 (1987-04-01), Aoki
patent: 4660029 (1987-04-01), Houda et al.
patent: 4674895 (1987-06-01), Tanaka
patent: 4707153 (1987-11-01), Nishi
patent: 4740092 (1988-04-01), Applegate et al.
IBM Tech. Disc. Bulletin, by R. E. Pence, vol. 21, No. 12, May 1979, p. 4892, 400-121.
IBM Journal of Research and Development, vol. 29, No. 5, Sep. 1985 pp. 442-477; 494-542.
Darr Duane R.
Ewing Kenneth R.
Graham Scott M.
Trackman Marshall H.
Qume Corporation
Sewell Paul T.
LandOfFree
Multi-line serial printer does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Multi-line serial printer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multi-line serial printer will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-517686