公开(公告)号：DE69901205T2

公开(公告)日：2002-08-08

申请号：DE69901205

申请日：1999-06-16

Applicant: XEROX CORP

Inventor： STEARNS RICHARD G ,  RICHLEY EDWARD A

IPC: B41J2/015 ,  B41J2/06 ,  B41J2/14

Abstract: A method and apparatus which laterally focusses aqueous ink drops onto a substrate, using electric fields. The drops are not charged, and focusing results from the forces on the uncharged dielectric drop that occur in a nonuniform electric field. It is shown that initial lateral velocity misdirection of the drops is corrected using electric fields. Lateral velocities which would produce drop displacements of -50 mu m from their intended positions, at a height of 1mm above the ink surface, may be corrected to produce displacements of less than 2.5 mu m.

公开(公告)号：DE69618691D1

公开(公告)日：2002-03-14

申请号：DE69618691

申请日：1996-02-28

Applicant: XEROX CORP

Inventor： STEARNS RICHARD G ,  NELSON STEVEN E

IPC: G01J1/04 ,  G03G15/00 ,  G03G15/01

公开(公告)号：CA2271608A1

公开(公告)日：1999-12-17

申请号：CA2271608

申请日：1999-05-13

Applicant: XEROX CORP

Inventor： STEARNS RICHARD G ,  RICHLEY EDWARD A

IPC: B41J2/015 ,  B41J2/06 ,  B41J2/14 ,  B41J2/045

Abstract: A method and apparatus which laterally focusses aqueous ink drops onto a substrate, using electric fields. The drops are not charged, and focusing results from the forces on the uncharged dielectric drop that occur in a nonuniform electric field. It is shown that initial lateral velocity misdirection of the drops is corrected using electric fields. Lateral velocities which would produce drop displacements of -50.mu.m from their intended positions, at a height of 1mm above the ink surface, may be corrected to produce displacements of less than 2.5.mu.m.

公开(公告)号：DE69230027D1

公开(公告)日：1999-10-28

申请号：DE69230027

申请日：1992-12-21

Applicant: XEROX CORP

Inventor： HECHT DAVID L ,  STEARNS RICHARD G ,  PRASADAM FLORES NOAH L

IPC: G06K1/12 ,  G06K19/06 ,  G06V30/224 ,  G06K9/18

Abstract: A self-clocking glyph code (23) is provided for encoding n-bit long digital values (where n>1) in a logically ordered sequence of composite glyphs (31a-31d) that are written, printed, or otherwise recorded on a hardcopy recording medium in accordance with a predetermined spatial formatting rule. As used herein, a "composite glyph" is a graphical symbol that has a plurality of predefined, substantially orthogonal, graphical characteristics; each of which is capable of assuming any one of a plurality of predefined graphical states. An n-bit long digital value is distributively encoded in a glyph of this type by decomposing its n-bits, prior to or during the encoding, into a plurality of shorter, ordered, non-overlapping bit strings. The digital values of these bit strings, in turn, are encoded in the states of respective graphical characteristics of the composite glyph in a predetermined logical order, thereby preserving the logical ordering of the bit strings.

公开(公告)号：DE69535456T2

公开(公告)日：2007-08-16

申请号：DE69535456

申请日：1995-10-18

Applicant: XEROX CORP

Inventor： STEARNS RICHARD G

IPC: G02F1/13 ,  G06F3/147 ,  G02F1/133 ,  G02F1/135 ,  G02F1/136 ,  G02F1/1368 ,  G06F3/033 ,  G06F3/048 ,  G09G3/36 ,  H04N1/00 ,  H04N1/028

公开(公告)号：DE69732168T2

公开(公告)日：2005-06-02

申请号：DE69732168

申请日：1997-10-08

Applicant: XEROX CORP

Inventor： JACKSON WARREN B ,  BIEGELSEN DAVID K ,  JARED DAVID A ,  STEARNS RICHARD G

IPC: G06K7/00 ,  G06K7/10 ,  G06T1/00

公开(公告)号：CA2271608C

公开(公告)日：2003-04-29

申请号：CA2271608

申请日：1999-05-13

Applicant: XEROX CORP

Inventor： RICHLEY EDWARD A ,  STEARNS RICHARD G

IPC: B41J2/015 ,  B41J2/06 ,  B41J2/14 ,  B41J2/045

Abstract: A method and apparatus which laterally focusses aqueous ink drops onto a substrate, using electric fields. The drops are not charged, and focusing results from the forces on the uncharged dielectric drop that occur in a nonuniform electric field. It is shown that initial lateral velocity misdirection of the drops is corrected using electric field s. Lateral velocities which would produce drop displacements of -50.mu.m from their intended positions, at a height of 1mm above the ink surface, may be corrected to produce displacements of less than 2.5.mu.m.

公开(公告)号：DE69618691T2

公开(公告)日：2002-08-14

申请号：DE69618691

申请日：1996-02-28

Applicant: XEROX CORP

Inventor： STEARNS RICHARD G ,  NELSON STEVEN E

IPC: G01J1/04 ,  G03G15/00 ,  G03G15/01

公开(公告)号：DE69430517D1

公开(公告)日：2002-06-06

申请号：DE69430517

申请日：1994-12-06

Applicant: XEROX CORP

Inventor： HECHT DAVID L ,  STEARNS RICHARD G

IPC: G06K1/12 ,  G06K7/00 ,  G06K19/06

Abstract: A self-clocking glyph code (31) is composed of data glyphs (34) which encode logically ordered data values, together with one or more multi-glyph synchronization code patterns (33). Each of the synchronization code patterns (33) is distinguishable from the data glyphs (34), but the synchronization code pattern (33) or patterns provide an explicit spatial reference for the data glyphs. To this end, the glyphs (37) of the synchronization code pattern (33) or patterns are written on the recording medium (35) in accordance with the same spatial formatting rule as the data glyphs (34), plus at least one additional formatting rule that establishes a predetermined geometric relationship between the glyphs of the synchronization code pattern or patterns (33) and corresponding ones of the spatially formatted data glyphs (34), such that the logical order of at least a significant number (>> 1)of the data glyphs (34) is inferable from the synchronization code pattern or patterns (33). Preferably, each of the synchronization code patterns (33) is composed of glyphs (37) that are selected from the same finite symbol set as the data glyphs (34), so the synchronization code pattern or patterns (33) typically are defined by glyph patterns that have a suitably high statistical probability of being unique with respect to any pattern of data glyphs.

公开(公告)号：DE69901205D1

公开(公告)日：2002-05-16

申请号：DE69901205

申请日：1999-06-16

Applicant: XEROX CORP

Inventor： STEARNS RICHARD G ,  RICHLEY EDWARD A

IPC: B41J2/015 ,  B41J2/06 ,  B41J2/14

Abstract: A method and apparatus which laterally focusses aqueous ink drops onto a substrate, using electric fields. The drops are not charged, and focusing results from the forces on the uncharged dielectric drop that occur in a nonuniform electric field. It is shown that initial lateral velocity misdirection of the drops is corrected using electric fields. Lateral velocities which would produce drop displacements of -50 mu m from their intended positions, at a height of 1mm above the ink surface, may be corrected to produce displacements of less than 2.5 mu m.