Method for enhanced print quality on print engines with at least

Facsimile and static presentation processing – Facsimile – Recording apparatus

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

358447, 358455, 358457, 395107, 395108, 347252, H04N 140, G06F 1500, G01D 942

Patent

active

057514704

ABSTRACT:
Information or data in the form of a mathematical representation of an area to be covered by a desired gray level, is sent, for example in floating point format, to a printer, e.g. a laser printer, for processing by the printer processor. The area to be covered is converted to a representation of pixels with the gray level converted to a digital value such as an eight bit value. Supercell representations with a gray level threshold matrix is provided, with each of the supercell array cells having threshold levels associated therewith whereby if the selected gray level is either above or below the threshold, one of print
o-print conditions are met for that pixel. Alternatively, if the level is the opposite and greater than a preselected range of values, the print
o-print condition will be opposite. If the gray level selected is in the direction of print, relative to the threshold level but is less than the full print level but within the range of values, then a look up table is entered corresponding to that threshold value and range and a length of time for laser turn on, corresponding to time slices, is selected dependent upon the difference between the gray level value and the threshold level. Pixel growth may proceed from either the left or right or some combination of both depending upon the coding. For example, the threshold level may include a range of value's in either direction causing growth to occur from either the left or the right edge of the cell.

REFERENCES:
patent: 4816863 (1989-03-01), Lee
patent: 4868587 (1989-09-01), Loce
patent: 4924301 (1990-05-01), Surbrook
patent: 5109283 (1992-04-01), Carley
patent: 5134495 (1992-07-01), Frazier
patent: 5170261 (1992-12-01), Cargill et al.
patent: 5185852 (1993-02-01), Mayer
patent: 5245355 (1993-09-01), Morton
patent: 5359423 (1994-10-01), Loce
patent: 5387985 (1995-02-01), Loce
patent: 5426519 (1995-06-01), Banton et al.
patent: 5446550 (1995-08-01), Maekawa
patent: 5455681 (1995-10-01), Ng
patent: 5467422 (1995-11-01), Itihara et al.
patent: 5479263 (1995-12-01), Jacobs et al.
patent: 5528384 (1996-06-01), Metcalfe et al.
patent: 5631476 (1997-05-01), Overall

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Method for enhanced print quality on print engines with at least does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for enhanced print quality on print engines with at least, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for enhanced print quality on print engines with at least will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-987603

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.