Paul L Jacobs

US Patent:

6359105, Mar 19, 2002

Filed:

Oct 26, 2000

Appl. No.:

09/695861

Inventors:

John James Ianni - Medina NY
J. Stephen Kittelberger - Rochester NY
Daniel Andrew Harrington - Walworth NY
Eugene Frederick Young - Rochester NY
Hui Chang - Pittsford NY
Nilmarie Santos-Roman - Penfield NY
Dennis J. OKeefe - Ontario NY
Joseph Louis Leonardo - Penfield NY
Paul Lynn Jacobs - Webster NY
Kiran B. Sheth - Penfield NY
Dongming Li - Fairport NY
Robert Edward Lutz - Webster NY
Yelena Lipovetskaya - Rochester NY

Assignee:

Xerox Corporation - Stamford CT

International Classification:

C08G 6302

US Classification:

528272, 528271

Abstract:

Cross-linked toner resin having linear portions and cross-linked portions of high density microgel particles, where the toner resin is an unsaturated polyester resin, is prepared using a liquid chemical initiator such as 1,1-bis(t-butyl peroxy)-3,3,5-trimethylcyclohexane so that the cross-linked resin achieved contains less than 0. 20 percent by weight of acids. In particular, the cross-linked toner resin is free of benzoic acid. The method of making the cross-linked toner resin includes (a) spraying the liquid chemical initiator onto the unsaturated polyester resin prior to, during or subsequent to melting of the unsaturated polyester resin to form a polymer melt; and (b) subsequently cross-linking the polymer melt under high shear to form the cross-linked toner resin.

US Patent:

6582866, Jun 24, 2003

Filed:

Aug 31, 2001

Appl. No.:

09/943958

Inventors:

Samir Kumar - Penfield NY
Juan A. Morales-Tirado - Rochester NY
D. Paul Casalmir - Sodus NY
Scott M. Silence - Fairport NY
Ying S. Molisani - Sherwood OR
James M. Proper - Webster NY
Paul L. Jacobs - Webster NY
Geraldine Baer - Davis CA

Assignee:

Xerox Corporation - Stamford CT

International Classification:

G03G 910

US Classification:

4301081, 4301101, 4301104

Abstract:

The present invention relates to a toner and process for making the improved toner. The improved toner comprises a toner resin comprising: at least one colorant; (b) at least one toner resin mixed with the colorant and formed into combined colorant and resin particles having an average size less than 15 microns; and (c) surface additive particles wherein the surface additives are adhered to the colorant and toner resin by an impaction process in a quantity greater than three (3) percent of the combined weight of resin and colorant in the toner. The invention also relates to an improved process for making toners, comprising: (a) forming toner particles averaging 4 to 10 microns in size and comprised of at least one toner resin and at least one colorant; and (b) blending sufficient surface additive particles and the toner particles in a high intensity blender for less than 10 minutes such that the weight of surface additives that become attached to toner particles is greater than three (3) percent of the weight of the classified particles.

US Patent:

6599673, Jul 29, 2003

Filed:

Dec 17, 2002

Appl. No.:

10/321967

Inventors:

Samir Kumar - Penfield NY
Juan A. Morales-Tirado - Rochester NY
D. Paul Casalmir - Sodus NY
Scott M. Silence - Fairport NY
Ying S. Molisani - Sherwood OR
James M. Proper - Webster NY
Paul L. Jacobs - Webster NY
Geraldine Baer - Davis CA

Assignee:

Xerox Corporation - Stamford CT

International Classification:

G03G 910

US Classification:

43013721, 4301081, 4301101, 4301104

Abstract:

The present invention relates to a toner and process for making the improved toner. The improved toner comprises a toner resin comprising: at least one colorant; (b) at least one toner resin mixed with the colorant and formed into combined colorant and resin particles having an average size less than 15 microns; and (c) surface additive particles wherein the surface additives are adhered to the colorant and toner resin by an impaction process in a quantity greater than three (3) percent of the combined weight of resin and colorant in the toner. The invention also relates to an improved process for making toners, comprising: (a) forming toner particles averaging 4 to 10 microns in size and comprised of at least one toner resin and at least one colorant; and (b) blending sufficient surface additive particles and the toner particles in a high intensity blender for less than 10 minutes such that the weight of surface additives that become attached to toner particles is greater than three (3) percent of the weight of the classified particles.

US Patent:

8411324, Apr 2, 2013

Filed:

Feb 3, 2010

Appl. No.:

12/699361

Inventors:

Paul L. Jacobs - Webster NY, US
W. Bradford Willard - Fairport NY, US
Brian R. Conrow - Webster NY, US

Assignee:

Xerox Corporation - Norwalk CT

International Classification:

H04N 1/40
B41J 2/47
G03G 15/00

US Classification:

358 301, 358 19, 358 302, 358 321, 358501, 358534, 347 19, 347115, 347118, 347240, 399 49, 399 72, 399 78

Abstract:

Line width of images marked by an image marking device is adjusted by reading a calibration patch marked by the marking device, and then adjusting one or more settings of the marking device, such as exposure intensity or cleaning field intensity, independent of the digital control of the tone reproduction curve so that the line width of subsequently marked images becomes closer to a target value. A digital control may be implemented to compensate for the impact of the modification of the one or more settings on the tone reproduction curve.

US Patent:

8442407, May 14, 2013

Filed:

Jul 27, 2010

Appl. No.:

12/844167

Inventors:

W. Bradford Willard - Fairport NY, US
Kimberly Anne Stoll - Penfield NY, US
David R. Stookey - Walworth NY, US
Paul L. Jacobs - Webster NY, US
Robert W. Phelps - Victor NY, US
Jyothsna Ram - Pittsford NY, US

Assignee:

Xerox Corporation - Norwalk CT

International Classification:

G03G 15/00

US Classification:

399 44, 399 94, 399 97, 399290

Abstract:

Disclosed are printing methods, apparatus and systems for developing a latent image recorded on a surface, for example, a photoreceptor with developer material. According to an exemplary embodiment, the development method applies a development field voltage between a development station donor member and a development station transport member as a function of a humidity measurement associated with the developer material, the humidity measurement providing a surrogate tribo measurement of the developer material.

US Patent:

20130002788, Jan 3, 2013

Filed:

Jun 29, 2011

Appl. No.:

13/171544

Inventors:

W. BRADFORD WILLARD - Fairport NY, US
Paul L. Jacobs - Webster NY, US
Brian Robert Conrow - Webster NY, US

Assignee:

Xerox Corporation - Norwalk CT

International Classification:

B41J 2/435

US Classification:

347224

Abstract:

The present disclosure provides a method of forming a toner image, comprising: electrically charging a photoreceptor by a charging roller being brought into contact with the photoreceptor, the photoreceptor comprises a photosensitive coating layer on a cylindrical conductive substrate; correcting line width variation using an exposure adjustment calculation (y); and, wherein the exposure adjustment calculation uses a factor based on a ratio (m) of a coefficient of line width variation due to toner ager divided by the coefficient of line width variation due to laser power.

US Patent:

48767417, Oct 24, 1989

Filed:

Aug 21, 1987

Appl. No.:

7/087914

Inventors:

Paul H. Jacobs - Fairport NY
Douglas P. Collette - Raleigh NC

Assignee:

General Signal Corporation - Stamford CT

International Classification:

H04B 116
H04B 148

US Classification:

455 47

Abstract:

A compressed single side band communication system and method in which the audio signal is compressed prior to pre-emphasis and thereafter summed with a pilot tone for further compression prior to transmission. Initially, only the pilot tome is transmitted at full rated power to aid in acquisition of the signal by the receiver. Thereafter, the transmitter ALC is disabled and the pilot tone is attenuated. The receiver adjusts the frequency characteristics of the pilot tone filter and phase lock loop filter in the detector as a function of lock-up. The delay after loss of lock-on in reverting to wide band pilot tone and wideband loop filters is varied as a function of signal strength. The pilot tone may be frequency modulated for tone coded squelch, with the modulating source being located in the return end of the phase lock loop filter. A unique filter is provided to insure acquisition of the pilot tone.

US Patent:

45732086, Feb 25, 1986

Filed:

Jan 26, 1984

Appl. No.:

6/558046

Inventors:

Paul H. Jacobs - Fairport NY
Douglas P. Collette - Stafford NY

Assignee:

Aerotron, Inc. - Raleigh NC

International Classification:

H04B 176
H04B 700

US Classification:

455 71

Abstract:

A compressed single side band communication system and method in which the audio signal is compressed prior to pre-emphasis and thereafter summed with a pilot tone for further compression prior to transmission. Initially, only the pilot tone is transmitted at full rated power to aid in acquisition of the signal by the receiver. Thereafter, the transmitter ALC is disabled and the pilot tone is attenuated. The receiver adjusts the frequency characteristics of the pilot tone filter and phase lock loop filter in the detector as a function of lock-on. The delay after loss of lock-on in reverting to wide band pilot tone and wideband loop filters is varied as a function of signal strength. The pilot tone may be modulated for tone coded squelch. The modulating source is located in the return end of the phase lock loop filter.