Gregory Alan Chatham

US Patent:

48060976, Feb 21, 1989

Filed:

Mar 15, 1988

Appl. No.:

7/170075

Inventors:

Charles S. Palm - Norcross GA
Danny L. Slayton - Lilburn GA
Khosrow Lak - Doraville GA
Peter F. Sampson - Doraville GA
David R. Davis - Buford GA
Maurice S. Wheatley - Duluth GA
Gregory A. Chatham - Marietta GA
Wayne C. Jones - Duluth GA
Kirk W. Charles - Atlanta GA
Anthony J. Ireland - El Cerrito CA

Assignee:

Colorocs Corporation - Norcross GA

International Classification:

F27B 928
H05B 100

US Classification:

432 60

Abstract:

An improved full color electrophotographic print engine using flexible belts to carry a photosensitive electrostatic image developer and a transfer belt for building up composite developed images. Each belt, and an optical scanner, are driven by mechanically independent motors which are synchronized by an electronic digital controller implementing precise servos. The use of the flexible belts allows the machine to be relatively inexpensive, very small compared to previous full color print engines, and yet maintain precise registration of color composite images. An improved fuser mechanism with increased dwell time at constant machine speed is also shown. The fuser includes a pair of spaced-apart rollers, both of which urge a sheet of image receptor against the heated roller over a predetermined angular portion of the roller. The machine is specifically designed to be used interchangeably with an optical bench source as a copier or with a laser bench as a laser printer. Improved copy quality monitoring by sensing actual amounts of toner deposited on a photoreceptor belt is also shown.

US Patent:

47053852, Nov 10, 1987

Filed:

Nov 10, 1986

Appl. No.:

6/929268

Inventors:

Charles S. Palm - Norcross GA
Danny L. Slayton - Lilburn GA
Khosrow Lak - Doraville GA
Peter F. Sampson - Doraville GA
David R. Davis - Buford GA
Maurice S. Wheatley - Duluth GA
Gregory A. Chatham - Marietta GA
Wayne C. Jones - Duluth GA
Kirk W. Charles - Atlanta GA
Anthony J. Ireland - El Cerrito CA

Assignee:

Colorocs Corporation - Norcross GA

International Classification:

G03G 1501

US Classification:

355 4

Abstract:

An improved full color electrophotographic print engine using flexible belts to carry a photosensitive electrostatic image developer and a transfer belt for building up composite developed images. Each belt, and an optical scanner, are driven by mechanically independent motors which are synchronized by an electronic digital controller implementing precise servos. The use of the flexible belts allows the machine to be relatively inexpensive, very small compared to previous full color print engines, and yet maintain precise registration of color composite images. An improved fuser mechanism with increased dwell time at constant machine speed is also shown. The fuser includes a pair of spaced-apart rollers, both of which urge a sheet of image receptor against the heated roller over a predetermined angular portion of the roller. The machine is specifically designed to be used interchangeably with an optical bench source as a copier or with a laser bench as a laser printer. Improved copy quality monitoring by sensing actual amounts of toner deposited on a photoreceptor belt is also shown.

US Patent:

46979204, Oct 6, 1987

Filed:

Nov 10, 1986

Appl. No.:

6/929329

Inventors:

Charles S. Palm - Norcross GA
Danny L. Slayton - Lilburn GA
Khosrow Lak - Doraville GA
Peter F. Sampson - Doraville GA
David R. Davis - Buford GA
Maurice S. Wheatley - Duluth GA
Gregory A. Chatham - Marietta GA
Wayne C. Jones - Duluth GA
Kirk W. Charles - Atlanta GA
Anthony J. Ireland - El Cerrito CA

Assignee:

Colorocs Corporation - Norcross GA

International Classification:

G03G 1501
G03G 15048

US Classification:

355 14CH

Abstract:

An improved full color electrophotographic print engine using flexible belts to carry a photosensitive electrostatic image developer and a transfer belt for building up composite developed images. Each belt, and an optical scanner, are driven by mechanically independent motors which are synchronized by an electronic digital controller implementing precise servos. The use of the flexible belts allows the machine to be relatively inexpensive, very small compared to previous full color print engines, and yet maintain precise registration of color composite images. An improved fuser mechanism with increased dwell time at constant machine speed is also shown. The fuser includes a pair of spaced-apart rollers, both of which urge a sheet of image receptor against the heated roller over a predetermined angular portion of the roller. The machine is specifically designed to be used interchangeably with an optical bench source as a copier or with a laser bench as a laser printer. Improved copy quality monitoring by sensing actual amounts of toner deposited on a photoreceptor belt is also shown.

US Patent:

46521151, Mar 24, 1987

Filed:

Oct 25, 1985

Appl. No.:

6/791218

Inventors:

Charles S. Palm - Norcross GA
Danny L. Slayton - Lilburn GA
Khosrow Lak - Doraville GA
Peter F. Sampson - Doraville GA
David R. Davis - Buford GA
Maurice S. Wheatley - Duluth GA
Gregory A. Chatham - Marietta GA
Wayne C. Jones - Duluth GA
Kirk W. Charles - Atlanta GA
Anthony J. Ireland - El Cerrito CA

Assignee:

Colorocs Corporation - Norcross GA

International Classification:

G03G 1500

US Classification:

355 14TR

Abstract:

An improved full color electrophotographic print engine using flexible belts to carry a photosensitive electrostatic image developer and a transfer belt for building up composite developed images. Each belt, and an optical scanner, are driven by mechanically independent motors which are synchronized by an electronic digital controller implementing precise servos. The use of the flexible belts allows the machine to be relatively inexpensive, very small compared to previous full color print engines, and yet maintain precise registration of color composite images. An improved fuser mechanism with increased dwell time at constant machine speed is also shown. The fuser includes a pair of spaced-apart rollers, both of which urge a sheet of image receptor against the heated roller over a predetermined angular portion of the roller. The machine is specifically designed to be used interchangeably with an optical bench source as a copier or with a laser bench as a laser printer. Improved copy quality monitoring by sensing actual amounts of toner deposited on a photoreceptor belt is also shown.

US Patent:

46990798, Oct 13, 1987

Filed:

Nov 19, 1986

Appl. No.:

6/932407

Inventors:

Charles S. Palm - Norcross GA
Danny L. Slayton - Lilburn GA
Khosrow Lak - Doraville GA
Peter F. Sampson - Doraville GA
David R. Davis - Buford GA
Maurice S. Wheatley - Duluth GA
Gregory A. Chatham - Marietta GA
Wayne C. Jones - Duluth GA
Kirk W. Charles - Atlanta GA
Anthony J. Ireland - El Cerrito CA

Assignee:

Colorocs Corporation - Norcross GA

International Classification:

G03G 1509

US Classification:

118658

Abstract:

An improved full color electrophotographic print engine using flexible belts to carry a photosensitive electrostatic image developer and a transfer belt for building up composite developed images. Each belt, and an optical scanner, are driven by mechanically independent motors which are synchronized by an electronic digital controller implementing precise servos. The use of the flexible belts allows the machine to be relatively inexpensive, very small compared to previous full color print engines, and yet maintain precise registration of color composite images. An improved fuser mechanism with increased dwell time at constant machine speed is also shown. The fuser includes a pair of spaced-apart rollers, both of which urge a sheet of image receptor against the heated roller over a predetermined angular portion of the roller. The machine is specifically designed to be used interchangeably with an optical bench source as a copier or with a laser bench as a laser printer. Improved copy quality monitoring by sensing actual amounts of toner deposited on a photoreceptor belt is also shown.