Mohammed Wahid Siddiqui

US Patent:

6747072, Jun 8, 2004

Filed:

Jan 22, 1997

Appl. No.:

08/787405

Inventors:

Mohammed W. Siddiqui - Carol Stream IL

Assignee:

Marconi Data Systems Inc. - Wood Dale IL

International Classification:

C09D 1110

US Classification:

523161, 523100, 523101, 523160, 524389, 524497, 524555, 424 7824, 424481, 424482, 426302, 426383

Abstract:

The present invention provides an ink composition for use in ink jet printing on food items, candy, particularly dark candy, such as chocolate, and to a method of forming printed images on such food items by use of the ink compositions. The compositions of the present invention comprise a pigment, a binder, and an aqueous carrier.

US Patent:

58006010, Sep 1, 1998

Filed:

Mar 14, 1997

Appl. No.:

8/814987

Inventors:

Wan Kang Zou - Northbrook IL
Mohammed W. Siddiqui - Carol Stream IL
Fengfei Xiao - Mount Prospect IL
Arsenia C. Morelos - Glendale Heights IL
Jose G. Vega - Chicago IL
Qiao Qiao Dong - Northbrook IL
Josephine Aguilar - Elk Grove Village IL

Assignee:

Videojet Systems International, Inc. - Wood Dale IL

International Classification:

C09D 1102
C09D 1108

US Classification:

106 3165

Abstract:

The present invention provides jet ink compositions that are free or substantially free of sedimentation, have good image adhesion and rub resistance, and that are suitable for printing messages on food items such as fruits, vegetables, chocolate, candies, confectioneries and pharmaceuticals such as tablets, and other edible or ingestible materials. The jet ink compositions comprise a surface modified or coated colorant. The surface modified or coated food grade colorant comprises a food grade colorant of particle size in the range of from about 0. 01 micron to about 25 microns, a colorant carrier, and a surface modifying or coating agent. The surface modifying or coating agent comprises at least one binder resin, and preferably two or more binder resins.

US Patent:

62511750, Jun 26, 2001

Filed:

Aug 6, 1998

Appl. No.:

9/130675

Inventors:

Linfang Zhu - Naperville IL
Mohammed Siddiqui - Carol Stream IL

Assignee:

Marconi Data Systems Inc. - Wood Dale IL

International Classification:

C09D 1100

US Classification:

106 3158

Abstract:

The present invention provides a jet ink composition and a method of jet printing onto non-porous substrates such as glass, metal, ceramics, and plastics images which have improved adhesion. The jet ink composition, which has short dry times, comprises an organic solvent, colorant, and a hydroxyaromatic resin with its hydroxyaromatic units being linked by a linkage other than alkylene ether linkage. The hydroxyaromatic units of the hydroxyaromatic resin are linked by, for example, an alkylene linkage. An example of a suitable hydroxyaromatic unit is a phenol. An example of the organic solvent is ethanol. The jet ink composition provides short dry times on non-porous substrates. In some embodiments of the ink composition, the image adhesion can be further improved by the use of an adhesion promoter such as a silane, a dendrimer, or a combination thereof.

US Patent:

59353082, Aug 10, 1999

Filed:

Jul 31, 1998

Appl. No.:

9/127243

Inventors:

Mohammed W. Siddiqui - Carol Stream IL
Bruce A. Lent - Oak Park IL

Assignee:

Videojet Systems International, Inc. - Wood Dale IL

International Classification:

C09D 1100

US Classification:

106 3114

Abstract:

A latent image printing process by applying to a substrate a latent image ink composition containing zinc bromide with an ink jet printer. Subsequently, the latent image is activated to render it visible, by application of an activator.

US Patent:

6010564, Jan 4, 2000

Filed:

Oct 16, 1997

Appl. No.:

8/951898

Inventors:

Linfang Zhu - Naperville IL
Mark A. Chamerlik - Elk Grove Village IL
Mohammed W. Siddiqui - Carol Stream IL
Jose F. Ezpeleta - Glendale Heights IL

Assignee:

Videojet Systems International, Inc. - Wood Dale IL

International Classification:

C09D 1114
C09D 1108
B41J 201

US Classification:

106 3137

Abstract:

The present invention provides a jet ink composition suitable for printing on substrates such as plastics messages having abrasion resistance, the composition comprising an organic solvent, a colorant, a cellulose nitrate resin, and a rosin resin. For example, the messages printed on untreated low density polyethylene and polypropylene substrates have improved rub resistance and scratch resistance. The present invention further provides a method for printing abrasion resistant messages on a surface comprising projecting a stream of droplets of the jet ink composition to the surface, controlling the direction of the stream so that the droplets are caused to form the desired printed messages, and allowing the messages to dry.

US Patent:

59394684, Aug 17, 1999

Filed:

Jul 26, 1996

Appl. No.:

8/686191

Inventors:

Mohammed W. Siddiqui - Carol Stream IL

Assignee:

Videojet Systems International, Inc. - Wooddale IL

International Classification:

C09D 500

US Classification:

523161

Abstract:

Disclosed are jet ink compositions suitable for producing marks on objects that are invisible to the unaided eye and are visible only when excited by an exciting radiation comprising a solvent, a fluorescent colorant, a binder resin, and a plasticizer having a vapor pressure of about 15 mm Hg or less at 240. degree. C. Examples of suitable binder resins include an acrylic resin, a toluenesulfonamide resin, and a sulfonamide-formaldehyde resin. An example of a suitable plasticizer is o-butyl benzyl phthalate. The marks are blush resistant when exposed to water at 150. degree. F. and above for 5 minutes. Also disclosed is an improved method of identifying objects, the improvement comprising providing a blush resistant identifying mark using the inventive jet ink compositions. A system for identifying objects with a blush resistant identification mark is also disclosed.

US Patent:

53954319, Mar 7, 1995

Filed:

Jun 22, 1993

Appl. No.:

8/079980

Inventors:

Mohammed W. Siddiqui - Carol Stream IL
Snehal S. Desai - Lombard IL

Assignee:

Videojet Systems International, Inc. - Wood Dale IL

International Classification:

C09D 1102

US Classification:

106 20R

Abstract:

An ink composition suitable for ink jet printing operations, comprising a colorant, water, and surfactant, said composition having a surface tension of less than about 30 dynes/cm.