Recorders – Printing – dotting – or punching marker – Ink transfer support or moving means
Patent
1984-05-17
1986-11-25
Miller, Jr., George H.
Recorders
Printing, dotting, or punching marker
Ink transfer support or moving means
316108, 316154, 358300, G01D 1514, G01D 942, H04N 123
Patent
active
046252223
ABSTRACT:
Print enhancement circuits for an electrophotographic printing machine are placed between the character generator and the printhead to modify drive signals for the printhead. Modifications include smoothing the digitized edges of slanted lines; broadening single pel width lines in the direction perpendicular to the scan direction as well as in the direction parallel to scan. Inhibiting circuits are provided to prevent passage of enhancement signals under certain conditions. Generally, leading and trailing edge gray signals are provided next to all black data in a direction parallel to scan while expanded black signals are provided for the single pel data in a direction perpendicular to scan by adding to the black signal on both its leading and trailing edges.
When a single picture element (pel) area contains two added black signals, both are passed; when a single pel area contains one added black signal and one gray signal, both are passed; when a single pel area contains two gray signals, only the leading gray signal is passed; and when a single pel area contains two added black signals and a gray signal, only the gray signal is passed.
REFERENCES:
patent: 4365275 (1982-12-01), Berman et al.
patent: 4395721 (1983-07-01), Ohno et al.
patent: 4396928 (1983-08-01), Abe et al.
patent: 4437122 (1984-03-01), Walsh et al.
patent: 4460909 (1984-07-01), Bassetti et al.
patent: 4463364 (1984-07-01), Tamura
IBM Technical Disclosure Bulletin, "Improving Resolution of a Laser Beam Printer", R. J. Froess & F. L. Wade, vol. 26, No. 3B, Aug. 83, pp. 1572-1573.
Bassetti Larry W.
Kantor Sherwood
Richert Janis K.
International Business Machines - Corporation
Miller Jr. George H.
Peco Linda M.
Rohrer Charles E.
LandOfFree
Interacting print enhancement techniques does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Interacting print enhancement techniques, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Interacting print enhancement techniques will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1160996