US4859550A — Smear resistant magnetic image character recognit…

Claim 1

Independent Claim 82 words

An electrophotographic process which comprises the generation of a latent image; developing the image with a toner composition comprised of resin particles, magnetite particles, and an additive component comprised of an aliphatic hydrocarbon or a polymeric alcohol of the formula (CH.sub.3 (CH.sub.2).sub.n CH.sub.2 OH wherein n is a number of from about 30 to about 500; and subsequently providing the developed image with magnetic ink characters thereon to a reader/sorter device whereby toner offsetting and image smearing is minimized in said device.

Claim 2

Dependent Claim 82 words

An electrophotographic process which comprises the generation of a latent image; developing the image with a toner composition comprised of resin particles, magnetite particles, and an additive component comprised of an aliphatic hydrocarbon or a polymeric alcohol of the formula (CH.sub.3 (CH.sub.2).sub.n CH.sub.2 OH wherein n is a number of from about 30 to about 500; and subsequently providing the developed image with magnetic ink characters thereon to a reader/sorter device whereby toner offsetting and image smearing is minimized in said device.

Claim 3

Dependent Claim 88 words

An electrophotographic process which comprises the generation of a latent image in an electronic printing MICR apparatus; thereafter developing the image with a toner composition comprised of resin particles, magnetite particles, and an aliphatic hydrocarbon, or an additive component comprised of polymeric alcohol of the formula CH.sub.3 (CH.sub.2).sub.n CH.sub.2 OH wherein n is a number of from about 30 to about 500; and subsequently providing the developed image with magnetic ink characters thereon to a reader/sorter device whereby toner offsetting and image smearing is minimized in said device.

Claim 4

Dependent Claim 88 words

An electrophotographic process which comprises the generation of a latent image in an electronic printing MICR apparatus; thereafter developing the image with a toner composition comprised of resin particles, magnetite particles, and an aliphatic hydrocarbon, or an additive component comprised of polymeric alcohol of the formula CH.sub.3 (CH.sub.2).sub.n CH.sub.2 OH wherein n is a number of from about 30 to about 500; and subsequently providing the developed image with magnetic ink characters thereon to a reader/sorter device whereby toner offsetting and image smearing is minimized in said device.

Claim 5

Dependent Claim 14 words

A process in accordance with claim 1 wherein the toner composition contains pigment particles.

Claim 6

Dependent Claim 14 words

A process in accordance with claim 2 wherein the toner composition contains pigment particles.

Claim 7

Dependent Claim 43 words

A process in accordance with claim 1 wherein the toner composition contains magnetite particles in an amount of from about 30 to about 70 percent by weight, and pigment particles in an amount of from about 2 to about 10 percent by weight.

Claim 8

Dependent Claim 43 words

A process in accordance with claim 2 wherein the toner composition contains magnetite particles in an amount of from about 30 to about 70 percent by weight, and pigment particles in an amount of from about 2 to about 10 percent by weight.

Claim 9

Dependent Claim 22 words

A process in accordance with claims 1 or 2 wherein a soft roll fuser is selected for affixing the developed latent images.

Claim 10

Dependent Claim 21 words

A process in accordance with claims 1 or 2 wherein n is a number of from about 30 to about 300.

Claim 11

Dependent Claim 27 words

A process in accordance with claims 1 or 2 wherein the polymeric alcohol wax has a number average molecular weight of from about 475 to about 1,400.

Claim 12

Dependent Claim 27 words

A process in accordance with claims 1 or 2 wherein the polymeric alcohol wax has a number average molecular weight of from about 475 to about 750.

Claim 13

Dependent Claim 19 words

A process in accordance with claims 1 or 2 wherein the polymeric alcohol is present as an internal component.

Claim 14

Dependent Claim 31 words

A process in accordance with claims 1 or 2 wherein the polymeric alcohol is present in an amount of from about 1 percent by weight to about 20 percent by weight.

Claim 15

Dependent Claim 31 words

A process in accordance with claims 1 or 2 wherein the resin particles are selected from the group consisting of polyesters, styrene butadiene copolymers, styrene acrylate copolymers, and styrene methacrylate copolymers.

Claim 16

Dependent Claim 26 words

A process in accordance with claim 13 wherein the styrene butadiene copolymer contains 91 percent by weight of styrene, and 9 percent by weight of butadiene.

Claim 17

Dependent Claim 27 words

A process in accordance with claims 1 or 2 wherein the magnetite is present in an amount of from about 30 to about 70 percent by weight.

Claim 18

Dependent Claim 30 words

A process in accordance with claims 1 or 2 wherein the magnetite is acicular and is present in an amount of from about 15 to about 40 percent by weight.

Claim 19

Dependent Claim 30 words

A process in accordance with claims 1 or 2 wherein the magnetite is cubic and is present in an amount of from about 50 to about 60 percent by weight.

Claim 20

Dependent Claim 18 words

A process in accordance with claims 1 or 2 wherein the toner composition contains a charge enhancing additive.

Claim 21

Dependent Claim 32 words

A process in accordance with claim 18 wherein the charge enhancing additive is selected from the group consisting of distearyl dimethyl ammonium methylsulfate, cetyl pyridinium halides, and stearyl phenethyl dimethyl ammonium tosylates.

Claim 22

Dependent Claim 26 words

A process in accordance with claim 18 wherein the charge enhancing additive is selected from the group consisting of Spilon TRH, or a potassium tetraphenyl borate.

Claim 23

Dependent Claim 32 words

A process in accordance with claim 18 wherein the charge enhancing additive is present in an amount of from about 0.05 percent by weight to about less than 5 percent by weight.

Claim 24

Dependent Claim 96 words

A process for processing personal checks which comprises generating images in an electronic printing device; developing the images with a developer composition comprised of a toner containing resin particles having dispersed therein pigment particles, and a component comprised of polymeric alcohols of the formula CH.sub.3 (CH.sub.2).sub.n CH.sub.2 OH wherein n is a number of from about 30 to about 500, and carrier particles; transferring the images to a substrate; fusing the images thereto; and subsequently providing the checks with magnetic ink characters thereon to a reader/sorter device whereby toner offsetting and image smearing is substantially avoided.

Claim 25

Dependent Claim 96 words

A process for processing personal checks which comprises generating images in an electronic printing device; developing the images with a developer composition comprised of a toner containing resin particles having dispersed therein pigment particles, and a component comprised of polymeric alcohols of the formula CH.sub.3 (CH.sub.2).sub.n CH.sub.2 OH wherein n is a number of from about 30 to about 500, and carrier particles; transferring the images to a substrate; fusing the images thereto; and subsequently providing the checks with magnetic ink characters thereon to a reader/sorter device whereby toner offsetting and image smearing is substantially avoided.

Claim 26

Dependent Claim 32 words

A process in accordance with claim 22 wherein the resulting checks are utilized in the IBM 3890 or NCR 6780 reader/sorter device, and wherein image smearing and image offsetting is substantially avoided.

Claim 27

Dependent Claim 33 words

A process in accordance with claim 22 wherein the resulting checks are utilized in a reader/sorter device, and wherein image smearing and image offsetting to the read and write heads is substantially avoided.

Claim 28

Dependent Claim 37 words

A process in accordance with claim 22 wherein the resulting checks are utilized in a reader/sorter device, and wherein image smearing and image offsetting to a protective foil present on the read and write heads is avoided.

Claim 29

Dependent Claim 23 words

A process in accordance with claim 22 wherein the reject rate in the reader/sorter device is less than one half of one percent.

Claim 30

Dependent Claim 89 words

A xerographic process which comprises generating latent images with high or low speed electronic printing devices; thereafter developing the image with a developed composition comprised of a toner composition containing resin particles, magnetite particles, and a component comprised of aliphatic hydrocarbons, or polymeric alcohols of the formula (CH.sub.3 (CH.sub.2).sub.n CH.sub.2 OH wherein n is a number of from about 30 to about 500, and carrier particles; and subsequently providing the checks with magnetic ink characters thereon to a reader/sorter device whereby toner offsetting and image smearing is substantially avoided.

Claim 31

Dependent Claim 89 words

A xerographic process which comprises generating latent images with high or low speed electronic printing devices; thereafter developing the image with a developed composition comprised of a toner composition containing resin particles, magnetite particles, and a component comprised of aliphatic hydrocarbons, or polymeric alcohols of the formula (CH.sub.3 (CH.sub.2).sub.n CH.sub.2 OH wherein n is a number of from about 30 to about 500, and carrier particles; and subsequently providing the checks with magnetic ink characters thereon to a reader/sorter device whereby toner offsetting and image smearing is substantially avoided.

Claim 32

Dependent Claim 16 words

A process in accordance with claim 27 wherein the carrier particles contain a polymeric coating thereover.

Claim 33

Dependent Claim 50 words

A process in accordance with claim 28 wherein the carrier particles are comprised of a steel or a ferrite core with a coating thereover selected from the group consisting of polychlorotrifluoroethylene-covinylchloride copolymer, a polyvinylidene fluoropolymer, or a terpolymer of styrene, methacrylate, and an organo silane, fluorinated ethylenepropylene copolymers, and polytetrafluoroethylene.

Claim 34

Dependent Claim 15 words

A process in accordance with claim 28 wherein the toner contains a charge enhancing additive.

Claim 35

Dependent Claim 18 words

A process in accordance with claim 30 wherein the charge enhancing additive is distearyl dimethyl ammonium methyl sulfate.

Claim 36

Dependent Claim 43 words

A process in accordance with claims 1 or 2 wherein the read/write heads are free of image smearing after the documents generated are passed through a magnetic ink character recognition sorter, and the reject rate is less than one half of one percent.

Claim 37

Dependent Claim 25 words

A process in accordance with claim 28 wherein toner offsetting is avoided after the documents generated are passed through a magnetic ink character recognition sorter.

Claim 38

Dependent Claim 116 words

A process which comprises the formation of a latent image on a photoconductive member in an electronic imaging apparatus; developing the image with a toner composition comprised of resin particles having dispersed therein magnetitie particles, and a component comprised of aliphatic hydrocarbons or polymeric alcohols of the formula CH.sub.3 (CH.sub.2).sub.n CH.sub.2 OH wherein n is a number of from about 30 to about 500; subsequently transferring the image to a supporting substrate; fixing the image; and applying to the developed image during or subsequent to fusing a layer of said polymeric alcohol; and a subsequently providing the documents with magnetic ink characters thereon to a reader/sorter device whereby toner offsetting and image smearing is substantially avoided.

Claim 39

Dependent Claim 116 words

A process which comprises the formation of a latent image on a photoconductive member in an electronic imaging apparatus; developing the image with a toner composition comprised of resin particles having dispersed therein magnetitie particles, and a component comprised of aliphatic hydrocarbons or polymeric alcohols of the formula CH.sub.3 (CH.sub.2).sub.n CH.sub.2 OH wherein n is a number of from about 30 to about 500; subsequently transferring the image to a supporting substrate; fixing the image; and applying to the developed image during or subsequent to fusing a layer of said polymeric alcohol; and a subsequently providing the documents with magnetic ink characters thereon to a reader/sorter device whereby toner offsetting and image smearing is substantially avoided.

Claim 40

Dependent Claim 93 words

A xerographic process which comprises forming a latent image on an imaging member; developing the image with a toner composition comprised of resin particles, magnetite particles, and optional additive particles; subsequently transferring the image to a suitable substrate; fixing the image thereto; thereafter applying to the developed image a polymeric alcohol of the formula CH.sub.3 (CH.sub.2).sub.n CH.sub.2 OH wherein n is a number of from about 30 to about 500; and subsequently providing the documents with magnetic ink characters thereon to a reader/sorter device whereby toner offsetting and image smearing is substantially avoided.

Claim 41

Dependent Claim 93 words

A xerographic process which comprises forming a latent image on an imaging member; developing the image with a toner composition comprised of resin particles, magnetite particles, and optional additive particles; subsequently transferring the image to a suitable substrate; fixing the image thereto; thereafter applying to the developed image a polymeric alcohol of the formula CH.sub.3 (CH.sub.2).sub.n CH.sub.2 OH wherein n is a number of from about 30 to about 500; and subsequently providing the documents with magnetic ink characters thereon to a reader/sorter device whereby toner offsetting and image smearing is substantially avoided.

Claim 42

Dependent Claim 34 words

A process in accordance with claims 1 or 2 wherein the additive is an aliphatic hydrocarbon with functional groups thereon selected from the group consisting of aldehyde, carboxylic acid, carboxylic ester, and an amide.

Claim 43

Dependent Claim 14 words

A process in accordance with claim 36 wherein the additive is a Bareco wax.

Claim 44

Dependent Claim 19 words

A process in accordance with claims 1 or 2 wherein there is added to the toner composition carrier particles.

Claim 45

Dependent Claim 16 words

A process in accordance with claims 1 or 2 wherein the toner composition contains pigment particles.

Claim 46

Dependent Claim 17 words

A process in accordance with claim 21 wherein there is added to the toner composition carrier particles.

Claim 47

Dependent Claim 19 words

A process in accordance with claim 21 wherein a soft fuser roll is selected for affixing the developed image.

Claim 48

Dependent Claim 13 words

A process in accordance with claim 27 wherein the toner contains pigment particles.

Claim 49

Dependent Claim 86 words

A xerographic process which comprises generating latent images with high or low speed electronic printing devices; thereafter developing the image with a developer composition comprised of a toner composition containing resin particles, magnetite particles, and a component comprised of aliphatic hydrocarbons, or polymeric alcohols of the formula CH.sub.3 (CH.sub.2).sub.n CH.sub.2 OH wherein n is a number of from about 30 to about 300; and subsequently providing the checks with magnetic ink characters thereon to a reader/sorter device whereby toner offsetting and image smearing is substantially avoided.

Claim 50

Dependent Claim 86 words

A xerographic process which comprises generating latent images with high or low speed electronic printing devices; thereafter developing the image with a developer composition comprised of a toner composition containing resin particles, magnetite particles, and a component comprised of aliphatic hydrocarbons, or polymeric alcohols of the formula CH.sub.3 (CH.sub.2).sub.n CH.sub.2 OH wherein n is a number of from about 30 to about 300; and subsequently providing the checks with magnetic ink characters thereon to a reader/sorter device whereby toner offsetting and image smearing is substantially avoided.

Claim 51

Dependent Claim 19 words

A process in accordance with claim 34 wherein n is a member of from about 30 to about 300.

Claim 52

Dependent Claim 26 words

A process in accordance with claim 34 wherein carrier particles are added to the toner composition, or the toner composition is added to the carrier particles.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1992-08-21	1993-02-20	1993-08-22	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1996-08-21	1997-02-20	1997-08-22	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	2000-08-21	2001-02-20	2001-08-22	$7700.00	Window Closed / Lapsed

Smear resistant magnetic image character recognition processes

Abstract

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