CA1089276A - Hybrid liquid toners including an amphipathic polymer, a charge director, a thermoplastic fixer and a dispersant - Google Patents

Abstract

Abstract of the Disclosure A hybrid liquid toner composed of a mixture of two different types of liquid toner. One type is a liquid toner that includes a complex amphipathic molecule of which at least a fixer and a dispersant are polymeric moieties and which additionally includes a charge director and optionally includes a color agent, all of these being carried by a volatile organic solvent of high electrical resistivity. The other type of liquid toner is one that includes a fixer and a dispersant as separate chemical entities and further includes a charge director, a pigment type color agent and a carrier solvent such as mentioned above. The two toners can be mixed in a very wide range of proportions and when so mixed have several advantages which makes -the hybrid toner particularly useful in connection with preparation of lithographic masters and microfiche reproductions by electrostatography as well as useful as an all purpose liquid toner.

Description

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This invention relates to hybrid liquid toner composed of a mixture of two toners, one of which includes an amphipathic molecule composed of vari-ous polymeric moieties having different functions at least one of which is a fixing function and another is a dispersant function, and a second liquid toner which includes no amphipathic molecule but does include a fixer and a dispersant as separate chemical entities, preferabLy at least one of the toners including a color agent. The hybrid toner further includes a charge director, and an organic volatile liquid carrier solvent of high electrical resistivity A conventional prior art liquid toner typically was composed of a volatile organic liquid solvent system of high electrical resistivity in which thoro were carricd several constituents, some being ~ispersed and others being llsporso~ or solvated. Exempli~icatively, these oth~r constituents wero: a thermoplastic fixer, a dispersant, a pigmcnt which frequently was carbon black, and a charge director, all of these being separate chemical entities. This type of prior art toner will be referred to hereinafter as the "first" liquid toner A second type of liquid toner has been proposed in United States Patent 3,753,760. This latter liquid toner will hereinafter be referred to as the "second" liquid toner. The second liquid toner was characteri~ed by the presence therein of an amphipathic molecule. At least one polymeric moiety thereof included a thermoplastic fixer, and at least another polymeric moiety thereof included a dispersant. Thus these two moieties formed part of a single chemical entity whirh was a complex molecule The amphipathic molecule could also include as another moiety thereof a color agent or the color agent could be a chemically separate entity in the second liquid toner. Furthermore, the second liquid toner included a charge director which was not part of the amphi-pathic molecule Like the first liquid toner, the second liquid toner addi-tionally included a liquid carrier which was a volatile organic solvent system of high electrical resistivity. Of the said one polymeric moiety and the said _ 1 --1~8g27~

ano~her polymeric moiety, at least one is thermopLastic. The said one poly-meric moiety is soluble in the solvent system and a portion thereof is a fixative and a dispersant. The said another pol~neric moiety is insoluble in the solvent system and has a particle size between 25m~ and 25~, a portion of said another polymeric moiety being a fixative. Thereby the second type of liquid toner has a continuous phase constituting the solvent system with the said polymeric moiety dissolved therein and a dispersed phase constituting the said another polymeric moiety so that the amphipathic molecule acts as a mono-dispersed particle phase, a fixative and a dispersant.
Each of these two liquid toners had certain advantages and each had certain disadvantages, the disadvantages of the second liquid toner being com-paratively minor but nev0rtheloss 0xistont. 'Iheso disadvantages, and particu-larly the disadvantages of tl~e socond liquid toner, were not importallt factors in the use of the second liquid toner for most electrostatographic purposes such, for instance, as one of the most widespread applications thereof which constituted its employment in an office copying machine. Ilowever, the minor disadvantag0s of the second liquid toner did to some extent hinder its use in connection with the preparation of lithographic masters and of reproductions or microfiche purposes by an electrostatographic process.
Thus, it has been found that where the second liquid toner was used for making a lithographic master, although the master could be used for a large number of runs, for instance over 15,000, when the runs were considerably longer there was a tendency for the electrostatographically deposited image to deteriorate.
Electrostatographic lithographic masters are prepared by electrosta-tographically depositing a toner either with or without a color agent on a flexible base which is covered with a photoconductor coating that has had formed therein a latent electrostatic image and subsequently is developed by applying a liquid toner thereto. Both the photoconductor coati.ng and the de-posited toner image are oleophilic and to render the image and its carrier 11~89Z76 useful as a master the background areas having no deposits thereon must be rendered oleophobic which is accomplished by making them hydrophilic. This transformation is effected by a swabbing technique which, for example, employs a water solution of ferrocyanide or ferricyanide as an etchant that attacks the portion of the photoconductor coating which does not bear the electrosta-tographically deposited image. The photoconductor conventionally used in this technique is zinc oxide in a resin binder, this being a commercial electrosta-tographic paper.
In connection with the preparation of lithographic masters (as well as for general purposes) with the use of the first liquid toner, a serious disadvantagc was present which occurred where the original to be reproduced contained onc or more colored ~non-white) areas oE appreciable size, for ins-tance in excoss of 1/~" in any dimension, In such cases ther~ was a marked tendency for th~ deposit o~ toner on the area to be of groater density adja-cent the periphery than at the cen~er. Ihis drawback did not attend the use of the second liquid toner.
As to electrostatographic microfiche reproductions there was a minor disadvantage accompanying the use of the second liquid toner which was that there was a tendency, which might be caused by the large size of the complex molecule, for the boundary line of the image to waver slightly, i.e. to devi-ate slightly and almost unnoticeably from a faithful reproduction of the boun-dary line of the original. This disadvantage affected the ability to form a good enlargement of the microfiche image.
A far more serious disadvantage associated with the use of electro-statographic reproduction of microfiche images and which was inherent in the use of the first liquid toner was the difficulty in fixing the electrostatogra-phically deposited image on the carrier. The carrier included a transparent thermoplastic film-forming material containing a transparent photoconductor which was utilized to form the latent electrostatic image, the same subsequent-ly being developed. One such photoconductor which was widely used was a poly-1~5'Z76 N-vinyl carbazole. After the image had been deposited it had to be fixed.
This fixing was accomplished by heating, but, since the film-~orming material tended to become dimensionally unstable at approximately the temperature em-ployed for fusing the image, there was a marked tendency for the image to dis-tort which was unacceptable for microfiche uses.
This invention seeks to provide an unique hybrid liquid toner which is not subject to any of the foregoing defects This invention also seeks to provide a hybrid liquid toner which is capable of being employed in electrostatographic formation of a lithographic master that is capable of extended runs, well in excess of 15,000 reproduc-tions, without deterioration, The hybrid liquid toner of this invention provides a "fill" of solid-colorecl areas and yet is capablo of providing images which can be used as a lithographic mastor, The hybrid liquid toners of this invention also provide a toner which is particularly useful for the preparation of microfiche images by elec-trostatographic processes and wherein the resolution is exceedingly good, and in which heat fixing can be achieved without disturbing the dimensional stabi-lity of the transparent thermoplastic which constitutes the support for the developed image.
Furthermore, the hybrid liquid toners of this invention, in addition to being useful for the aoresaid purposes, can, without any modification whatsoever, be employed for conventional office copying purposes in any type of equipment using a liquid toner, thereby enabling the same toner to be em-ployed universally for all kinds and types of purposes.
Thus in a first embodiment this invention provides a liquid electro-statographic toner consisting essentially of a combination of:
~A) a first liquid toner including (i) a solvent system having an evaporation rate at least as fast as that of kerosene, but slower than that of hexane, and a Kauri-_ ~ _ 92'~6 butanol number less than 35, is substantially aromatic-liquid-free, has an electrical resistivity of at least about 109 ohm centimeters, a dielectric constant of less than three and one half and a Tagliabue closed cup flash point of at least 100F, is non-toxic and non-polar, has no objectionable odor, and has a viscosity of between 0.5 and 2.5 centipoises at room temperature, (ii) a solid synthetic thermoplastic fixer dissolved in the solvent system and (iii) a dispersant;
(B) a second liquid toner including (i) a solvent system compatible with the ~irst liquid toner and which has an evaporation rate at least as fast as that of kerosene, but slower than that of hoxano, and a Kauri-butanol number l~ss tllan 35, is substantlally aromatic-liquid-free, has an electrical resisti-vity of at least about 109 ohm centimeters, a dielectric constant of less than three and one half and a Tagliabue closed cup flash point of at least lOO~F, is non-toxic and non-polar, has no objectionable odor, and has a viscosity of between 0,5 and 2.5 centipoises at room temperature, (ii) an amphipathic polymeric molecule of the graft type having a polymeric backbone part and a polymeric graft part on said backbone part, said molecule being composed of two polymeric moieties of which at least one is thermoplastic, said first polymeric moiety, which is one of said parts, being solvated by said systems, a portion of said first polymeric moiety being a fixative and a dispersant, and a se-cond polymeric moiety, which is the other o-f said parts, being insol-uble in said systems, said second polymeric moiety having a particle size between 25m~ and 25~, a portion of said second polymeric moiety being a fixative, so that there is provided a continuous phase con-stituting the solvent systems with the first polymeric moiety dis-~ 5 -Z'7~;

solved therein and a dispersed phase constituting the non-solvated polymeric moiety whereby said molecule acts as a mono-dispersed par-ticle phase, a fixative and a dispersant;
(C) the first liquid toner being present in an amount of from 0.5% to 99.5%, the balance of the liquid electrostatographic toner being the second liquid toner; and (D) at least one of said liquid toners including a charge di:rector.
In the second embodiment this invention provides in a method of creating an image, the improvement comprising: applying under electrostatic control to a substrate so as to selectively deposit a coating thereon, a liquid electrostatographic toner essentially comprising a combination o:
tA) a ~irst liquid toner includin~
ti) a solvent systom having an ovaporation rate at least as fast as that of kerosene, but slower than that of hexane, and a Kauri-butanol number less than 35, is substantially aromatic-liquid-free, has an electrical resistivity of at least 109 ohm centimeters, a dielectric constant of less than three and one half and a Tagliabue closed cup flash point of at least 100F, is non-toxic and non-polar, has no objectionable odor, and has a viscosity of between 0.5 and 2.5 centipoises at room temperature, (ii) a solid synthetic thermoplastic fixer fully soluble in the solvent system and ~iii) a dispersant;
(B) a second liquid toner including ~i) a solvent system compatible with the first liquid toner and which has an evaporation rate at least as fast as that of kerosene, but slower than that of hexane, and a Kauri-butanol number less than 35, is substantially aromatic-liquid-free, has an electrical resis-tivity of at least about 109 ohm centimeters, a die:Lectric constant of less than three and one half and a Tagliabue closecl cup flash l~9Z76 point of at least 100F, is non-toxic and non-polar, has no objec-tionable odoT, and has a viscosity of between 0.5 and 2.5 centi-poises at room temperature, ~ii) an amphipathic polymeric molecule of the graf~ type having a polymeric backbone part and a polymeric graft part on said backbone part, said molecule being composed of two moieties of which at least one is thermoplastic, said first moiety, which is one o:F said parts, being solvated by said systems, a portion of said first moiety be-ing a fixative and a dispersant, and a second moiety, which is the other of said parts, being insoluble in said systems, said second moiety having a particle size between 25m~ and 251J, a portion of said second moiety being a Eixative, so that thero is provided a continuous phase constituting the solvent systems with the f:irst moiety dissolved therein and a dispersed phase constituting the non-solvated moiety whereby said molecule acts as a mono-dispersed par-ticle phase, a fixative and a dispersant;
(C) the first liquid toner being present in an amount of from 0.5% to 99.5%, the balance of the liquid electrostatographic toner being the second liquid toner; and (D) at least one of said liquid toners including a charge director, In general, the invention is carriecl out by combining two liquid toners utilizing, basically, functionally different systems, the two toners being admixable in an extremely wide range of proportions, exemplificatively as little as 0.5% of either the first or second liquid toner with the balance of the hybrid toner constituting the other liquid toner. As will be pointed out in the specific description, there are various advantages to be gained by adjusting these proportions in either direction.
The first toner is the type which, as of the date of this applica-tion, is known as a "conventional" toner and it includes as a liquid carrier a volatile organic solvent system of high electrical resistivityJ e.g. at least lQ1~9276 about 10 ohms centimeters. This liquid carrier has therein a fixer which may either be dispersed or solvated, a dispersant which usually is solvated, a charge director which may be solvated or dispersed and a pigment such, for instance, as carbon black which conventionally is dispersed.
The second liquid toner is of the type disclosed in United States Patent 3,753,760. These generally include a solvent system such as the one used for the first toner. The solvent system has therein a complex amphipa-thic molecule that at least includes aSpolymeric moieties thereof a fixer and a dispersant and which may include as an additional moiety a color agent. The color agent may also be present in the second toner as a separate chemical entity, i.e. not part of the complex amphipathic molecule. The color agent is not necessarily present in oither tho first or the second liquid koner, al-though it is desirably employed. ~or oxample, it ~oes not hav~ ~o bo includod if the hybrid toner is to be used exclusively in the formation of a lithogra-phic master although, even under such circumstances, its presence is desirable.
Furthermore, the second toner includes a charge director which is not part of the amphipathic molecule.
When the two toners are admixed with the use of any conventional mixing equipment such~ for instance, as a blender, a ball mill, a batch stir-rer or a homo~enizer, or even manually stirred,a hybrid toner is created whichis particularly useful for forming lithographic masters and ~icrofiche repro-ductions electrostatographically and is also useful as a general purpose elec-trostatographic developer both in ordinary business copy machines of all kinds and in the special type of equipment herein before briefly alluded to, to wit, ink jet printers, cathode ray tube printers, light beam writing printers and transfer printers, Instead of preparing the two toners separately and then combining them, the ingredients for both toners can be mixed at the same time The hybrid toner preferably includes a common solvent system and may include a common charge director(s) and color agent(s). Furthermore, the amphipathic molecule of the second liquid toner may be used as the dispersant for the first 1~8gZ76 liquid toner.
The various features of the hybrid liquid toners, and their methods of use will now be described in detail.
Any conventional prior art first liquid 1;oner can be employed. Such a toner includes a volatile organic liquid solvent system having a high elec-trical resistivity of at least about lO9 ohm-centirneters.
~ Preferably, the solvent system includes one or more solvents of the petroleum type such a solvent commonly being referred to as a "petroleum frac-tion", This includes distillation fractions, catalytically cracked fractions and polymers of aliphatic monomers derived eitller synthetically or by distil-lation or cracking fractionatian, Petroleum ractions are particularly useful in connection with the first toner because of tllo following attributes, ~a) quick evaporation, o,g., a thill ~ilm o~ tlle carr:ior will evaporato in a few seconds at a temperature below the char point of paper, so as to permit fast drying;
(b) non-toxicity;
(c) low odor;
(d) the characteristic that when employed with soluble solid film-forming agents it will fully escape therefrom so as to leave the solid film deposited by such agent tack-free and not subject to evaporation over protracted periods of time ater the deposited image is seemingly dry;
(e) sufficient fluidity to allow the particles of pigment to migrate therethrough with ease so that the pigment is capable of being quickly electrostatically attracted to and coupled with the pattern of electrosta-tic charges which is to be developed, (f) not attacking the coating binders on a base sheet and not attacking other ingredients of the sheet;
(g) not bleeding the electrostatic charges before the pigment is deposi-ted so as to maintain any desired degree of contrast; and (h) inexpensiveness~

In order to obtain these beneficial attributes, the plstroleum frac-tion, i.e., paraffinic solvent, should have an e~lporation rate at least as fast as that of kerosene, but slower than that of hexane. Thereby, the evapo-ration of the liquid from a film will be rapid, e g.> two seconds, at a tem-perature slightly below the char point of paper, it being frequently customary to raise the temperature of the film of liquid developer ~o this level for the purpose of evaporating the developer after the opaque electroscopic particles of pigment have been deposited by attraction on the electrostatically charged pattern. The petroleu~ fraction should have a low K. B. (Kauri-butanol) num-ber, preferably less than 35, and preferably between 26 and 35. This low K. B.
number minimizes the possibility that the petroleum fraction will attack the coat~ng b~nder, e.g., the binder for the zinc oxide, or will attack any sizing on the sheet, e.g" paper, upon which the coating is applicd. The petroleum fraction also should be substantially free o~ aromatic liquid constituents, i.e., it should be substantially aromatic-liquid-free. This term, as used herein, connotes that the proportion of aromatic liquids in the organic liquid carrier should not be in excess of two per cent by we~ght. The aromatic liquids have a strong tendency to attack tho coating binders, e.g., the coating binders for zinc oxide, but in concentrations of less than two per cent this tendency is 50 negligible as to be unnoticeable. The petroleum fraction must have a high electrical resistivity, e.g., in thc order of at least about 10 ohm centime-ters, and a dlelectric constant of less than three and one-half, so that the liquid carrier ~ill not dissipate the pattern of electrostatic charges which are *o be developed. The TCC (Tagliabue closed cup) flash point of the liquid carrier should be at least 100F and preferably about 120F to 152F, whe~eby under the conditions of use the liquid is considered non-flammable. The paraf-finic solvent also is non-toxic. It possesses no objectionablls odor and pre-ferably is odor-free, this being denoted by the term ~low odor". Consonant with its low dielectric constant and high resistivity, the liquid carrier is non-polar. The solvent system should have a low viscosity for th~s purpose, as indicated above, of permitting rapid migration therethrough of opaque electro-scopic charged pigment particles which are to be a1:tracted in large number to the electrostatically charged image which is to be developed. Such viscosity should be between 0.5 and 2.5 centipoises at room temperature. The petroleum fraction also i5 inexpensive.
Examples of petroleum fraction organic liquid carriers having physi-cal charac~eristics which fall within the foregoing criteria are Shell Sol 71 , * *
manufactured by Shell Oil Company; Isopar G , Isopar H , Isopar K , and Isopar L , manufactured by Humble Oil and Refining Company; Amsco OMS , Amsco 460 Solvent and Amsco Odorless Insecticide Base manufactured by American Mineral Spirits Company; and odorless kerosene. All o the foregoing are low odor paraffinic solvents, The dielectric constant of Shell Sol 71 is 2,06 at room temperatures, The other solvents have dielectric constants of the same order to magnitude, Other physical characteristics of Shell Sol 71, Isopar G, Isopar H, Isopar K, Isopar L, Amsco OMS, Amsco 460 Solvent and Amsco Odorless Insecticide Base which fingerprint these solvents and denote the presence of several of the above listed attributes are set forth below:
Distillation Flash Pt.
IBP Dry End F/ K.B. Aniline Sp.Gr.
F. Pt. F, TCC No, Pt, F, 60/60F, Shell Sol 71 345 398 12126.5 183 0,7563 Isopar G 318 347 10528.0 178 0.748 Isopar H 350 371 12326.9 183 0.7571 Isopar K 349 383 12626.5 185 0.7587 Isopar L 372 406 144 - 187 0.7674 Amsco OMS 352 386 12527.0 184.5 0.7608 Amsco 460 375 456 15034.5 146.5 0.8108 Amsco Odorless Insecticide Base 375 482 15226.5 175.0 0.7711 Initial Boiling Point; ASTM D-1078 Trademark ~(:1139276 The second constituent of the first liquid toner is the fixer which may be dispersible or soluble in the organic solvent system. The fixer acts as a film-forming agent in the developed image, holding the pigment bound to the carrier sheet. The fixing agent is solid at Ioom temperatures and in the absence of a solvent therefor. The fixing agent, if soluble in the solvent system, preferably is fully soluble therein and has a good so}vent release charac~eristic, which is to say, it must permit the solvent system to evapo-rate completely and quickly through a solid coherent film-like deposit left as a residue after solvent evaporation. The film left by the fixer either with or without heating of the deposited fixer, as the case may be, must be tack-fre0, tough and coherent so that th~ developed image will not ~mear or shred and will be resistant to deterioration, Moreover, thc fix~r should be compatible with the binder for the photoconductor coating, e.g. with the bin-der for a photoconductor zinc oxi~e coating, and should bond well to said coating in order to avoid any tendency of the finished image to separate or peel from the coated sheet. The following consti~ute excellent fixers, some of these being of the solvatable type and others being of the non-solvatable typo:
Rosin NC 11 , manufactured by ~lercules Powder Company. This is a pale thermoplastic acidic wood rosin that has boen both polymerized and hydro-genated. It has a softening point of 85C to 93C by the Hercules drop method and an acid number of 145 -65. Its density at 20C is 1.065. It has a saponification number of 155 - 165. Its degree of hydrogenation is about 90%
and it has an average molecular weight of 360. About 20% of the rosin acids are polymerized, Other useful fixers are:

Acid Softening Resin Manufacturer Description No. Pt. C

Lewisol 7 Hercules Glycerol ester of modified wood resin 8 168 HDM

Pentalyn A Hercules Pentaerythritol ester of wood rosin 12 111 HDM

Trademark - 12 _ 1~89276 Acid So~tening Resin Manufacturer Description No. Pt. C (1) -Pentalyn C Hercules Pentaerythritol ester of poly-merized wood rosin 14 135 HDM
*

Pentalyn G Hercules Modified penta-erythritol ester of wood rosin 14 135 HDM

Pentalyn H Hercules Pentaerythritol ester of hydro-genated wood rosin 13 104 HDM

Pentalyn K Hercules Pentaerythritol ester of dimeric resin aclds }4 192 HDM

Pentalyn X Hercules Modified penta-erythritol estcr of wood rosln 14 lS9 HDM

Pentalyn 860 Hercules Pentaerythritol ester of dimerlc resln acids 15 172 HDM
*

Polypale Hercules Glycerol ester Ester 10 of polymerized wood rosin 6 112 HDM

Staybelite Hercules Hydrogenated Resin wood rosin 165 76 HDM

Krumbhaar 484 Lawter Pentaerythrltol ~1 180 - 190 MM
Chemlcals, ester of modi-Inc., ~rum- ~led wood rosln bhaar Resin Division Nevchem 100 Neville Chemical Company ~A thermoplastic petrQleum hydrocaTbon resin in which the units in the polymer are predominantly aromatic or cyclic in structure. It is prepared by the polymerization of unsaturated hydrocarbon ~ractions boiling bet~ween about 125C and about 250C, having a Sp. Gr. (15.6/15.6C) of between 0.90 and 0.95. The polymerizable constituents comprise between about 30% to 90% by weight and the principal polymerizable monomers are:

Trademark (1) HDM - Hercules Drop Method MM - Mercury Method R~B - Ring and Ball ~8~276 cyclodiene dimers (2) 5 - 30%
indene 5 - 20%
vinyl toluene 5 - 25%
styrene O - 10%
The balance dry weight of the hydrocarbon fraction is constituted of essential-ly unpolymerizable paraffins, napthenes and aromatics containing 8 or more carbon atoms per molecule and boiling within ~he aforementioned range, i.e., between about 125 and 250C. The unsaturated hydrocarbon fractions from which the resin is obtained come from high temperature and low pressure pyrolysis of normally liquid or gaseous hydrocarbons having 2 or more carbon atoms per mole-cule. The cracking operation may be by-products of pyrolytic processes in which tho principal products sought are low boillng olefines and dienes such as ethylene, propylene, butenes, butadlene, otc, which are widely used base hydrocarbons in the petrochemical and plastics fields including elastomers.
Pyrolysis of both liquid and gaseous hydrocarbons for such purposes is well known and need not be described in detail.

Nevchem 100 Test Propert~ tTYpical Properties) 1. Softening Point (R~B) C. 100

2, Molecular Weight (No. Ave) 800

3. C/H Weight ratio 10 5

4 Sp Gr 25/25C. 1.090

5. Refr. Index 25C/D 1.602

6. Iodine Number 65

7. Acid Number <1 List of Test Method_:
1. ASTM E-28-58-T
2. Osmotic 3. Combustion Analysis 4. ASTM D-71-52 (2) Such as dicyclopentadiens (Cl ); di-me~hylcyclopentadiene (C12) codimer of cyclopentadiene an~ methylcyclopentadiene (Cll).

List of Test Me~hods (Cont'd) 5. Neville Method (toluene solution, extrapolated to solid resin) 6. ASTM D-555 Acid Softening Resin Manufacturer Description No. Pt C
.
Foral 85 Hercules Fuly hydro-genated glycerol ester of wood rosin 9 82 HDM
Cellolyn 104 Hercules Internally plasticized pentaerythritol ester of wood rosin 30 101 HDM
Dymerex Hercules Dimerlc resin acids 143 152 HDM
Pliolite~ Goodyear Vlnyl toluene/
VTAC L acrylate copolymer 6.1 47 R~B
Neocryl B-707 Polyvinyl Vinyl toluene/
Chemicals n-butyl metha-crylate/stearyl methacrylate tsee United States Patent 3,378,513;
Example 23) 115 R~B
All the foregoing fixers except the last two ure solvat~ble in one or more o the above listed organic solvents; the last two are not solvatablo in most o said solvents but can be employed therewith in disperse form for the first liquid toner.
The third constituent of the first liquid toner is a dispersant which may either be solvatable in the solvent system or non-solvatable; conventional-ly the dispersant is solvatable in said solvent system. The function of the dispersant, as is well known, is to disperse the pigment particles of sub-micron range in the non-polar solvent system that is employed. The dispersant must be compatible with the fixer and desirably is or includes a fixer in its own right. Desirably, also, the dispersant will augment the charge direction of the pigment particles.
Examples of solid dispersants having the foregoing phys,ical charac-Trademark ~(~89;276 teristics are: Lube Oil 564 and FOA 2 . Lube Oil 564 is manufactured by du Pont and is composed of 50% of methacrylate polymer and 50% of kerosene.
Insofar as the above examples of dispersan~s are concerned, it is the solid constituents that constitutes the dispersant, the liquid carrier merely ~orm-ing a convenient vehicle therefor. Other dispersa}lts include: Alkanol DOA
manufactured by duPont and constituting an oil additive constituting a ter-plymer prepared from a weight mixture of 50 parts of octadecenyl methacry-late, 10 parts diethylaminoethyl methacrylate, and 40 parts styrene, the same being polymerized by conventional bulk, solution or dispersion polymerization methods invol~ing known initiators including oxygen-yielding compounds, such as benzoyl peroxide, and azo compounds such as alpha, alpha' azodiisobutyro-nitrile, The polymdrization process preferably is carried out in an inert atmosphere, for example, nitrogen or carbon dioxide, at conventional tempera-tures ranging, as is well known, from 30C. to 150C, dependlng on the cata-lyst used, and generally between 50 to 70C where the catalyst is alpha, alpha' azodiisobutyronitrile. The polymerization is carried substantially to completion to eliminate substantially all of the unpolymerized nomers, it being understood that "substantially to completion" as used herein denotes that there is a remainder of from 0% to 15% of total monomers. The aforesaid terpolymer is dissolved in kerosene in proportions of 50~ by weight of the terpolymcr to 50% by weight of kerosene. The terpolymer constitutes,as is seen several completely organic compounds combined in proportions to effect the optimum balance between polar-active and oil-soluble groups. The said terpolymer is large and has an average molecular weight of 50,000.
Still other dispersants that may be used are those disclosed in United States Patent 3,048,544, namely alkyl methacrylate maleic anhydride polymer, maleimide polymer, a polymer constituting the reaction product of alkyl methacrylate, polyethylene glycol methacrylate and maleic anhydride, and a polymer constituting the reaction produc~ of alkyl methacrylate, polyethylene glycol methacrylate and imide of maleic anhydride, and tetrael~hylene pentamine;

Trademark 9Z7~

the polyglycol substituted polyesters disclosed in United States Patent 3,083,187; and the polyglycol substitu~ed polyamicles disclosed in United States Patent 3,083,188. The methods of preparation of these latter disper-sants are detailed in said patents.
The fourth constituent of the first liquid toner is a pigment.
The pigment employed can be any one of the many now kno~m to the art in connection with liquid electros~atographicdevelopers. As is well-known, these pigments essentially constitutevery fine solid particles the size of which is in the submicron range, which are opaque in mass and which are capable of acquiring an electroscopic charge. They are insoluble in the liquid carrier, So many different kinds and species of pigments are known that only typical representativc examples will be mentioned. These are:
powdered metals, e.g., powdered aluminum; powdered metal oxides, e.g., pow-dered magnetic iron oxide; powdered metal salts, e.g., powdered cadmium sele-nide (CdSe), powdered lead iodide (PbI2), powdered lead chromate (PbCrO4);
Cyan Blue GT 55-3295 (American Cyanamid Company, Pigments Division) (74160) described in United States Letters Patent No. 2,486,351; Cibacron Black BG (Ciba Company, Inc,); Cibacron Turquoise Blue G (Ciba); Cibalon Black BGL (Ciba); Orasol Black BRG (Ciba); Orasol Black RBL (Ciba); Acetamine Black CBS (E. I, du Pont de Nemours and Company, Inc ); Crocein Scarlet N ~x ~duPont) (27290); Fiber Black VF (duPont) (30235); Luxol Fast Black L (duPont) (Solv, Black 17); Nigrosine Base No. 424 ~duPont) (50415 B); Oil Black BG (duPont) (Solv. Black 16); Rotalin Black RM (duPont); Sevron Brilliant Red 3 B ~duPont);
Basic Black DSC tDye Special~ies, Inc.~; Hectolene Black (Dye Specialties);
Azosol Brilliant Blue B (General Aniline and Film Corporation, Dyestuff and Chemical Division) (Solv. Blue 9); Azosol Brilliant Green BA (General Aniline) (Solv. Green 2); Azosol Fast Brilliant Red (General Aniline); Azosol Fast Orange RA Conc. (General Aniline) (Solv. Orange 20); Azosol Fast Yellow GRA

It is to be noted that most, if not all, of these names although those generally used co~mercia}ly for the specified dyes, are also Trademarks of the dye manufacturer, material in irst parantheses indicates name of manufacturer.
material in second parenthese indicates Color Index number.

- 17 _ lQ~276 Conc. (General Aniline) (13900 A); Basic Black KMPA ~General Aniline); Benzo-fix Black CW-CF ~General Aniline) (35435); Cellitazol BNFV Ex Soluble CF
~General Aniline) (Disp. Black 9); Celliton Fast 131ue AF Ex Conc (General Aniline) ~Disp. Blue 9); Cyper Black IA (General Aniline) (Basic Blk. 3);
Diamine Black CAP Ex Conc (General Aniline) (30235); Diamond Black EAN Hi Con~
CF (General Aniline) (15710); Diamond Black PBBA Ex ~General Aniline) (16505);
Direct Deep Black ~A Ex CF (General Aniline) (30235); Hansa Yellow G (General Aniline) (11680); Indanthrene Black BBK Powd. (General Aniline) (59850);
Indocarbon CLGS Conc. CF (General Aniline) (53295); Katigen Deep Black NND Hi Conc. CF tGeneral Aniline) (53190): Nyliton Black B (General Aniline); Pala-tine Past Black WANA Conc. CF (General Aniline) (15711); Rapidogen Black 3 G
(General Aniline) ~Azoic Blk. 4); Sulphon Cyanine Black BA-CP (General Aniline) t26370); Zambezi Black VD Ex Conc, (General Aniline) (30015); Azo 011 Ulack tNational Aniline Division of Allied Chemical and Dye Corporation (Solv. Blk, 12); Iosol Blue 6 G (National Aniline) (Solv, Blue 30); Spirit Nigrosine SSB
(National Aniline) (50~15); Methyl Violet T Lake (N. Y. Color and Chemical Co,) (42535); Rubanox Red CP-1495 (The Sherwin-Williams Company) (15630); Victoria Blue Molybdate Lake (Standard Ultramarine and Color Co.) (42595); Black M
Toner (General Aniline) a mixture of carbon black and black dye precipitated on a lake; Toner 8100 (Paul Uhlich and Company, Inc.) a mixture oE carbon black and black dye precipitated on a lake; Raven 11 (Columbian Carbon Company) carbon black aggregates with a particle size of about 25m~, Statex B-12 (Columbian Carbon Co.) a furnace black of 33m~ average particle size and chrome green.
The fifth constituent of the first liquid toner is a charge director.
The charge directors which are ~ se well known in the field of liquid electrostatographic image developers must be soluble or dispersible in the paraffinic solvent system and must create or augment an electrostatic charge on the sub-micron pigment particles. Examples of useable charge direc-tors are:

- 18 _ 1~P89Z~

Aerosol OT* which is di-2-ethylhexyl sodium sulfosuccinate;
Aerosol TR* which is di-tridecyl sodium sulfosuccinate, the aluminum, chromium, zinc and calcium salts of 3,5-dialkyl-salicylic acid, wherein the alkyl group is propylJ isopropyl, butyl, isobutyl, tertiary butyl, amyl, isoamyl and other alkyl groups up to C-18;
the aluminum, chromium, zinc and calcium salts of dialkyl gamma-resorcylic acid, wherein the alkyl is as above;
the isopropylamine salt of dodecylbenzene sulfonic acid;
aluminum, vanadium and tin dresinates ~the metal dres;nates are prepared by adding a solution of the metal sulfate to a solution of the sodium salt of Dresinate 731* manufactured by Hercules Powder Co.);
cobalt, iron, lithium, tin and man~unesc octoatcs;
OLOA 1200~ whlch ls a product of the Oronite Divlsion of Cali~ornin Chemical Co., ~he same being a par~ially imidized poly~mine with lubricating oil soluble polyisobutylene chains and free secondary amines, its specifica-tions are: gravity at 60F. API 22.9, specific 0.92 flash point by the Cleve-land open cup method, 425~., viscosity at 210F., ~00 SSU, color ~ASThl D-1500) L55D, nitrogen, percentage by weight 2.0, and alkalinity value, tSM-205-15) 43;
soya bean lecithin;
an aluminum salt of 50 - 50 by weight mixture of the mono- and di-2-ethylhexyl esters of phosphoric acid;
zinc, lead, copper~ cadmium, calcium, aluminum and iron stearates;
zinc and aluminum palmitates;
aluminum oleate;
copper, manganese, cobalt and lead linoleates;
manganese linoresinate; and Nalcamine G-14*, manufactured by Nalco Chemical Co., this being 1[2-hydroxyethyl]-2-1mixed pentadecyl and heptadecyl]-2-imidazoline.
The linoresinates are metal soaps of tall oil.

*Trade Mark R

9~76 The various constituents of the first liquid toner are almost invariably chemically inert to one anotheT at ambient temperatures and are inert to the various constituents of the second liquid toner at like tempera-tures. All of the constituents of the first liquid toner are selected and admixed solely for their physical characteristics and generally not for chemi-cal interaction. The constituents are heat stable under conditions of use and at temperatures to l~hich they are exposed in transit and in storage. An electrostatographic developing bath solely constituting the first liquid toner will not gel under the operating conditions prevailing in a liquid electrostatographic developing apparatus, i.e, at a temperature up to as high as 125~. Moreover, such heat stahility and non-gelling ch~racteristics carry over into the second liquid developor component of tho hybrid llquid developor of the presont invention.
The following are ~xamples of liquid electrostatographic first toners in concentrated form:

gs. Krumbhaar 484 gs. Toner 8100 gs. Spirit Nigrosine SSB
gs. Raven 11*
gs. Alkanol DOA
150 mls, Shell Sol 71 2 gs, Manganese linoleate 2 gs, Aluminum stearate EXAMPLE II
gs Nevchem 100 9 gs. Toner 8100 9 gs. Spirit Nigrosine SSB
120 gs. Shell Sol 71 0.25 g. Aluminum dresinate*
17.5 gs. Alkanol DOA

*Trade Mark - 20 -B

EXAMPLE III
gs. Resin NC-ll 17.5 gs. Alkanol DOA
182 gs. Shell Sol 71 0.5 g Aluminum S~earate 28 gs. Cyan Blue GT 55-3295 EXAMPLE IV
gs. Staybelite gs. Alkanol DOA
gs. Mineral oil ~U.S,P,) gs, Toner 8100 9 gs, Statex B-12*
100 gs. Isopar K
1 g, Tin octoate The mineral oil is employecl to slightly increase viscos.lty and thereby reduce the settling for insoluble constituents and to inhibit the tendency of the concentrate to dry out and form a crust in the feeder valve.
EXAMPLE V
gs. Resin NC~ll 17.5 gs. Lube Oil 564 1 g Aluminum stearate 182 gs. Isopar H
gs, Powdered cadmium selenide EXAMPLE VI
gs. Nevchem 100 gs, Alkanol DOA
gs. Polymerized castor oil gs. Black M Toner 9 gs. Statex B-12*
100 gs. Isopar K
0,5 g. Cobalt octoate ~12% solution in mineral) *Trade Mark B

The polymerized castor oil is used for the same purpose as the mine-ral oil.
EXAMPLE VII
gs. Floral 85 gs. Alkanol DOA
gs. Polymerized casltor oil gs. Toner 8100 9 gs. Statex B-12 100 gs. Isopar G
0.5 g. Aluminum stearate EXAMPLE VIII
gs. Nevchem 100 gs. Alkanol DOA
gs. Polymerized castor oil gs. Toner 8100 9 gs, Statex B-12 100 gs. Isopar ~
0.5 g. Cobalt Octoate ~12% solution in mineral) EXAMPLE IX
gs. Staybelite Resin gs. Alkanol DOA
gs. Polymerized castor oil gs. Toner 8100 9 gs, Statex B-12 100 gs. Isopar G
5 drops Aluminum dresinate (10~ solution in Isopar G) EXAMPLE X
25 gs. Staybelite Resin 20 gs. Alkanol DOA
gs. Polymerized castor oil gs. Statex B-12 4 gs. Cyan Blue GT
l g. Aluminum stearate lO0 gs. Isopar K
Each of the foregoing concentra~ed liquid electrostatographic deve-lopers is formed by introducing all of the recitecl ingredients into a ball mill and milling the same ~herein at room tempera1:ure or above, e.g. 110F, for an extended period of time, e.g. 24 hours.
The second liquid toner used in the hybrid toner of the present invention is described in detail in United States Patent No. 3,753,760, but is summarised below for the sake of completeness. The second liquid toner essentially consists of a solvent system, optionally a coloring agent, and a complex molecule including plural polymeric moieties of which at least one is solvated by the solvent system and at least one is non-solvated by the solvent ~ystem, the color agent optionally being in the form of a moiety of the mole-cule in the nature of a color agent. At least one of the polymeric moieties isofaresinous nature and serves as a fixative. The non-solvated polymeric moiety provides a solid particle in the solvent system tthe continuous phase) enabling the desired size of particles between 25m~ and 25~ to be fo med and permitting electrophoretic deposition to take place in the formation of a patterned deposit on a substrate, e g., enabling electrostatic attraction to take place between a particle and a latent electrostatic image on a copy sheet.
The solvated polymeric moiety functions to maintain the complex molecule in suspension, that is to say, to prevent settling of the molecule and hence, in effect, operates as a dispersing agent. Thus, in the complex molecule, seve-ral functions of constituents of conventional (first type) toners are amalga-ma~ed. It should be observed that the polymer~c moiety or moie~ies ~hich impart the resinous characteristic to the complex molecule may be either the solvent solvated polymeric moiety or the solvent non-solvated polymeric moiety or both. This complex molecule is a so-called "tailored" molecule, that is to say, it is an artificially created molecule which in a single compound pro-vides plural functions requiring in a toner of the first type the presence of plural chemically separate constituents. A charge director is an additional most desirable component of the second liquid tone:r.
The basic building block of the second liquid toner is the solvent system The term "basic building block" is not used in the sense that the solvent system is the core of the complex molecule which is employed, but rather that the nature of the solvent system influences the particular type complex molecule that is to be employed. Once the solvent system has been chosen, certain parame*ers of the second liquid toner developer constituents, and specifically of the complex molecule, are indicated. Any type of solvent system can be used which is compatible with the first liquid toner, indeed the two liquid toners are mutually compatible, and with the particular appara-tus and mcthod u~ing any specific form o~ a hybrid liquid toner embodying the present lnvention. Pre~erably both the first and the second liquid toners employ the same solvent system. Both liquid toners of the two toners whose admixture consti~utes the present invention preferably are based upon a non-polar solvent system such as is conventionally employed presently in the cre-ation of most patterned deposits and is currently widely used in electrosta-tographic toners. Nevertheless, the second liquid toner is not limited to a non-polar solvent system and can be equally w~ll employed with a polar solvent system, whero such a system is practical in sny specific apparatus or method that can make use of such a toner and where the first liquid toner uses the same or a compatible solvent system. Because the present large-scale commer-cial use of liquid toners is with apparatuses and methods that utilize non-polar solvents, the following description of the second liquid as to the par-ticular examples and compositions stresses a non-polar continuous phase, i.e., solvent system. Such a non-polar solvent system includes an organic non-polar liquid having the characteris~ics of those previously m~entioned above and referred to in particular under subdivisions ta) - (h) above which are ~(~89;~76 incorporated here by reference. Examples of such solvent systems are identi-cal to those described with respect to the solvent systems of the first liquid toner and, indeed, it is preferred to use identical solvent systems for both the first and the second liquid toners so that the hybrid toner utilizes a single solvent system.
The second liquid toner uses with the solvent system a complex mole-cule having the polymeric moieties mentioned above. Hence, the second liquid toner is basically a latex toner, which is to say, a toner that looks like a natural latex in that it constitutes aliquid continuous phase having the de-sired attributes for use in a patterned deposition system, together with a dispersed phase which is an amphipathic polymer. The term "latex" as used herein refers to a colloidal suspension of a synthetic polymer in any liquid, for instance, as prepared by emulsion or suspension polymerization. An "amphipathic" substance is one that has an affinlty for two ~ifferent materi-als, for instance, oil or water, or two diff0ront phases, so that one poly-meric moiety of the amphipathic polymer, which is the foregoing complex le-cule, will be solvated by the phase for which it has an affinity, which in this instance, is the solvent system, and another polymeric moiety will not be solvated by this same phase, that is to say, will be insoluble in this phase, so that the phenomenon is created when the amphipathic polymer is contained in the solvent system of at least one polymeric moiety of the poly~er being sol-vated by tho solv~nt system and at least one polymeric moiety being non-solva-ted by the solvent system, The amphipathic polymer combines in one complex molecule the fixing agent, which i5 one or more of the polymeric moieties, the dispersing agent, which is one or more of the polymeric moieties, and option-ally, a color agent, which is one or more of the-moieties. This complex mole-cule, i.e., amphipa~hic polymer, by virtue of the fact that it is a molecule rather than a composition including a mixture of pigment particles, creates a narrow range of size distribution of the non-solvated particles which ultimate-ly are deposited on a substrate, e.g., a copy sheet, as by electrostatographic 1~8g276 development, to create a patterned deposition. Desirably the particle size distribution of the non-solvated particles in the second liquid toner is wi~h-in two orders of magnitude and preferably is within about one order of magni-tude. The foregoing ranges are what is denoted by the term "mono-dispersed".
The second liquid toner is created generally as follows. Firstly, the solvent system for the second toner is chosen, for example, a non-polar solvent such as a petroleum fraction like the ones mentioned above, although as previously observed, other solvents could be used, e.g. polar solvents such as water.
It is appropriate to reiterate at this point that patt~rned deposi-tions utilizing electrostatic phenomena, e.g., electrophoresis, do not neces-sarily involve the use of non-polar solvent systems for either of the first and the second liquid toners. Thus an eloctrostatic method using water as the carrier system in electrostatography is shown in United States Patent No.
3,425,829, issued February 4, 1969. Other suitable solvent systems, by way o example, i.e., solvent systems other than petroleum fractions and water, include alcohols, e.g., those having 1 to 6 cærbon atoms, such as ethylene glycol; ethers, including ethyl isobutyl ether, methyl isopropyl ether, the (Cl - C4) alkyl mono ethers of ethylene glycol, and dioxane; ketones, includ-ing acetone, methyl ethyl ketone, methyl isopropyl ketone, and ethyl isobutyl ketones; esters, including ethyl ac~tate, amyl acetate, butyl propionate, and the acetates o~ the mono- tCl - C4) - alkyl ethers o ethylene glycol; and halogenated hydrocarbons, such as chloroform, ethylene dlchloride, monochloro benzene and certain Freons.
After selection of the solvent system a polymeric backbone mo}ecule is chosen for the second liquid toner, which is solvated by the selected sol-vent system, i.e., which is fully soluble to the limit of its solubility.
Next a graft or block polymerization or copolymerization is carried out in such a manner hereinafter described, that non-solvated poly~eTic chains, which is to say, polymeric chains which are not solvated by the chosen solvent sys-- ~6 -lQ89;~76 tem, are created in the solvent system and are chemically joined with, i.e., to, the solvated polymeric backbone molecule. The mechanism by which the chains are created and chemically joined is not of critical impor~ance. For example, the chains first can be formed and then grafted onto the polymeric backbone molecule or a molecule of a gra~ting monomer can be first reacted with the polymeric backbone molecule and subsequently this first monomer can be polymerized with the other grafting monomers present in the solvent system.
The non-solvated polymeric moiety, i.e., fraction or chains, origi-nates as a monomer which usually and preferably is solvated by the solvent system for convenience in carrying out the reaction and to minimize the time required for the reaction and also to eliminate the need for solubilized or multi-solvent systems in the second liquid toner. However, as the reaction for the formation of the chains proceeds, the addition to the backbone polymer, which is to say, ~he newly formed chains, become progressively non-solvated and eventually becomos a non solvated polymeric moiety tportion) which consti-tutes a dispersed phase, this, despite the fact that the polymeric backbone still is solvated by the solvent system. It is interesting to observe that the reaction as it takes place initially causes a transformation of the clear solution of the solvated backbone polymer and of the solvated monomer first into a slightly hazy stage and then becomes more turbid as the minutes pass until ultimately a latex is formed.
It is also possiblo to use a reverse process in which a non-solvated polymeric backbono is partially solvated by graft or block polymerization.
As mentioned previously, the largest present-day commercial use for liquid toners is in electrostatography such as is used in the so-called "liquid" xerographic copying machines. The solvent system used in liquid to-ners for such purpose is usually a petroleum fraction such as described hereto-fore with respect to the first liquid toner and, hence, in dctailing various process steps in the manufacture of the complex molecule this particular sol-vent system wi}l be employed, although it is understood that the second liquid _ 27 -~Q~3927Çi toners can employ any solvent system whatsoever.
Assuming, then, that the solvent system for the second liquid toner is a petroleum fraction, a polymeric backbone material is selected which is solvated by such petroleum fraction. A popularly employcd petroleum fraction is odorless mineral spirits (hereinafter OMS). There are many polymeric ma-~erials which are solvated by OMS. These include, e.g., polymeric materials derived from natural sources such as crepe rubber; refined oxidized linseed oil and degraded rubber, and synthetic polymers such as alkyd resins; poly-isobutylene; polybutadiene; polyisoprene; polyisobornyl methacrylate; acrylic polymers of long chain esters of acrylic or methacrylic acids such as stearyl lauryl, isodecyl, octyl, 2-ethylhexyl ~nd hexyl; butyl esters of acrylic or methacrylic acids; polymeric vinyl esters of long chain acids such as vinyl stearate, vinyl laurate, vinyl palmitate and vinyl myristate; polymeric vinyl alkyl ethers, including poly ~vinyl ethyl ether) sold under the trademark Bakelite EDBM by Union Carbide Corp., poly (vinyl isopropyl ether), poly tvinyl i50butyl ether) and poly (vinyl n-butyl ether). As can be seen from the examples give, the polymers chosen have a structure similar to that of the solvent which is going to solvate them, i.e., the polymers and the solvent system have a similar degree of polarity. As long as this similar polarity is maintained copolymers, e.g., lauryl methacrylate-butyl acrylate, t-octyl methacrylate-butyl methacrylate, lauryl methacrylate-glycidyl methacrylate, 2-ethyl hoxyl acrylate-acrylic acid, isodecyl methacrylate-diethylaminoethyl ~ethacrylate and vinyl toluene-butatiene terpolymers, e.g., lauryl methacTylata_ isodecyl methacrylate-methyl methacrylate, stearyl methacrylate-cyclohexyl acrylate-methacrylic acid, octyl acrylate-crotonic acid-dodecyl methacrylate, glycidyl methacrylato-stearyl methacrylate-lauryl mathacrylate, lauryl methac-rylate-octyl methacrylate-glycityl methacrylate and isodecyl methacrylate-stearyl methacryla*e-acrylic acid; and te~rapolymers, e.g., N-vinyl pyrrolidone-butyl acrylate-lauryl methacrylate-stearyl methacrylate and acl~lic acid-stearyl acrylate-methyl methacrylate-isodecyl acrylate, may be used, as well ~89276 as block and graft copolymers, block and graft terpolymers, block and graft tetrapolymers and multi-type monomer/polymers in general as the backbone structure.
If desired, the backbone structure with or without added chains can be created in a solvent other than that in which it is ultimately to be used, i.e., in a solvent other than the solven~ system of the second liquid toner.
The original solvent in which the backbone structure with or without added chains is created can either be extracted or it can be part of a multi-solvent system in the second liquid toner. Many monomers which it might be desirable to employ in building a backbone structure are not sufficiently solvated by OMS or other solvent system o the second liquid toner to enable the polymeri-zation of the desired structure to be effected in OMS. In such a case, a copolymerization utilizing such insufficiently solvated monomors may be carried out in a solvent of higher K. B. number with another monomer which is solvated by OMS, as long as the rosultant coplymer contains enough of the second mono-mer so that the backbone can be solvated by OMS. Such a copolymerization, for example, could be carried out in benzene, the resulting copolymers precipita-ted by the addition of methanol, freed from solvent, and dissolved in GMS to function as the backbone during the subsequent graft or block polymerization or graft or block copolymerization.
The discussion above of synthetic polymeric materials suitable for use as the backbone, also often hereinafter sometimes referred to as the "precursor", in an oMS-based electrostatographic toner system is not limited to addition polymers; synthetic condensation polymers can also serve as the backbone or precursor in this system as long as they can be solvated by the chosen solvent medium, e.g., the self-condensation polymer of 12-hydroxystearic acid.
Inasmuch as the second liquid toner is not limited to the use of any particular solvent system, there is no limitation on the monomers that can be used to fabricate the polymeric constituents of such system. In the particular _ 29-1~9276 system being discussed, however, that base on oMs~ the following list of backbone polymers is exemplificative but not exclusive: .
(a) the homopolymers of the C4 - C22 esters of acrylic and methacrylic acid, such as polyhexyl methacrylate and acrylate polyisodecyl methacry-late and acrylate, polylauryl methacrylate a~d acrylate, polytetradecyl methacrylate and acrylate, and polystearyl methacrylate and acryla~e, all in the molecular wieght range of about 103 to about 106, but preferably not smaller than 104;
(b) copolymers, with each other, of any of the above monomers used to form the homopolymers under (a), and also with the methyl, ethyl, iso-- propyl and propyl esters of acrylic and methacrylic acid, provided that the ratios of non-solvated to solvated monomers are kept in a proportion such as to insure solvation of the resulting copolymer by OMS;
(c) copolymer~ of the above mentioned methacrylic and acrylic acid es-ter~ wlth monomors containing other functional groups as, for example, acrylic acid, methacrylic acid, crotonic acid, maleic acid, atropic acid, fumaric acid, itaconic acid, citraconic acid, acrylic anhydride, methac-rylic anhydride, maleic anhydride, acryloyl chloride, methacryloyl chlo-ride, acrylonitrile, methacrylonitrile, acrylamide and derivatives there-of, methacrylamide and derivatives thereof, hydroxyethyl methacrylate and acrylate, hydroxypropyl methacrylate and acrylate, dimethylaminome-thyl methacrylate and acrylate, dimethylaminoethyl methacrylate and acry-late, diethylaminomethyl methacrylate and acrylate, diethylaminoethyl methacrylate and acrylate, t-butylaminoethyl methacrylate and acrylate, allyl alcohol and derivatlves thereof, cinnamic acid and derivatives thereof, styrene and derivatives thereof, methallyl alcohol and deriva-tives thereof, propargyl alcohol and derivatives thereof, indene and derivatives thereof, norbornene and derivatives thereo~, vinyl ethers, vinyl esters snd other vinyl derivatives, glycidyl methacrylate and acry-late, m~no- and dimethyl maleate, mono- and diethyl maleate, mono-n-butyl 1~927~i maleate, mono-sec-butyl maleate,mono-ter-butyl maleate, monobenzyl maleate, mono-2-ethylhexyl maleate, mono-n-octyl maleate, mono- and dimethyl fumarate and mono- and diethyl fumarate;
~d) homopolymers of olefins such as butadiene, isoprene and isobutylene, and copolymers of these monomers with any of the nomers listed above consistent with the solvation limitation as described under (b);
(e) terpolymers and tetrapolymers of the above;
(f~ polycarbonates, polyamides, polyurethanes and epoxies.
With the backbone, i.e., precursor, chosen, there are added on to this backbone polymeric chains of a different degree of polarity from that of the solvent so that these chains although grafted on or block polymerized to the sol~ated backbone, will themselves be non-solvated by tho solvent system and, hence, form a dispersed phase. This addition o such chains is carried out via either a block or gra~t polymorization as iu5t noted. Suitable mono-mers which form polymers that are too polar to be solvated by the GMS solvent medium are vinyl acetate, methyl acrylate and methacrylate, ethyl acrylate and methacrylate, propyl acrylate and methacrylate, isopropyl acrylato and methac-rylato, hydroxy ethyl acrylate and methacrylate, hydroxy propyl acrylate and methacrylate, acrylonitril, methacrylonitrile, acrylamide, mathacrylamide, acrylic acid and anhydride, methacrylic acid and anhydride, mono methyl ma-leate, mono ethyl maleate mono-n_butyl maleate, mono-sec-butyl maleate, mono-ter-butyl maleato, monobenzyl maleate, mono-2-ethylhexyl maleate, mono-n-octyl maleate, mono methyl fumarate, mono ethyo fumarate, styrene, vinyl toluene, maleic acid and anhydride and crotonic acid and its anhydride. The invention is not limited to ho~opolymers in this further polymerization procedure; co-polymers and terpolymers or polymers of greater degrees of complexity, but of the proper polarity, could be joined to the chosen solvated backbone structure to form the latex When a grafting procedure is chosen for the latex forming step, and there are no ethylenic or other unsaturated bonds available in the backbone for 1~9~6 accepting the graft, polymeric chains can be grafted onto a saturated back-bsne, nevertheless, through the use of activating methods known to those skilled in the art. This method, however, although useful, leads to a hap-hazard activa~ion by the initiator employed of a site or sites in the back-bone molecule which subsequently serve to initiate the polymerization of the grafting monomer A preferred method, rather than haphazard activation, is to construct the backbone molecule of the second liquid toner in such a way as to produce ethylenically unsaturatcd double bonds or other unsaturated bonds con-taining pendant moieties to serve as sites to be activated by the initiator for in situ graft polymerization. Thus, there may be employed an oMS solvated backbone molecule consisting of a copolymer ofstearyl mathacrylate-glycidyl methacrylate of the proper (27:1) monomer ratio and molecular weight, e.g., 10,000 to 150, 000. Methacrylic acid can be reacted with this polymer in the presence of a polymerization inhibitor to provide ethyleneically unsaturated double bond containing sites through an estcrification reactlon for activation and subsequent in situ polymerization or co~polymerization. In such a manner, precursors for a graft polymerization or copolymerization can be made. The term '~recursor" as used herein denotes a backbone such as described, as well as a treated tactivated) backbone, which is to be used as the base for reac-tion to form a latex.
Many different reactions can be utilized to introduce these ethyleni-cally unsaturatet double bond containing pendant groups into the precursor.
If the monomer used in the backbone chain is called Monomer 1 tsaid monomer is at least one of two monomers which forms the backbone chain and which is pre-sent in a minority proportion by weight and which includes an unsaturated bond before copolymerization, said bond having been reacted in the formation of the copolymer but still contains a reactive group and the additional monomer used to form the precursor is called Monomer 2 tthe latter monomer is specifically selected to be reactive with the reactive group of Monomer 1), the following are illustrative examples:

927~

............ . .
~on~mer 1 Monomer 2 Acrylic acid ¦ Methacrylic acid Glycidyl methacrylate or l _ J Maleic acid acrylate ~ ~ Fumaric acid ¦ Atropic ac:id Allylamine Vinyl amine Hydroxyethyl methacrylate and ¦ acrylate ¦ ¦ Hydroxypropyl methacrylate and ~ J acrylate Acryloyl or ' - ~ Acrylamide methacryloyl chloride I Methacrylamide ¦ Allyl alcohol ¦ Allylamine \Vinyl amine Acrylic acid ~ ~Vinyl pyridines Methacrylic acid I IGlycidyl methacrylate Maleic acid ~ ) Vinylamine Crotonic acid ~ ~ ~ Allylamine Alkyl hydrogen maleates I IDialkylaminoalkyl methacrylates and Aryl hydrogen maleates I ~acrylates Alkyl hydrogen fumarates J
~ ¦Allylamine Vinyl isocyanate ~ - - 1 Vinylamine ) ~Methacrylyl acetone Cyanomethylacrylate ~ Vinylamine Allylamine 1 Allylamine Vinyl ~-chloroethylsulphone~ Vinylamine I I Allyl alcohol J ~llydroxyalkyl methacrylates ~Glycidyl methacrylate Methacrylic anydride 1 JVinylamine Acrylic an~ydride ~ Allylamine Maleic anydride I IHydroxyalkyl methacryla~es ~ ~Allyl alcohol Vinyl sulphonic acid ~ ~N-hydroxymethyl methacrylamides Vinyl phosphoric acid ~ Alkoxymethyl methacryla~ides 1~92~6 The reverse reactions can also be utilized, ie.e. Monomer 2 can be copolymerized into the backbone and subsequently condensed with Monomer 1 to create the precursor.
With the precursor formed, the latex is prepared by carrying out in a liquid system wherein the precursor or additional fraction polymeric moiety is fully solvated and the other fraction polymeric moiety not fully solvated~ the polymerization of the monomer or comonomers chosen for the add-itional fraction which preferably is the dispersed phase in the presence of and in conjunction with the precursor. In the preferred form of the second liquid toner, the monomer or monomers chosen polymerize to a material which is nonsolvated by the solvent system employed in the second liquid toner. For example, in an OMS-based system using the stearyl methacrylate-glycidyl metha-crylate-methacrylic acid precursor, typical useful monomers for th~ aclditional fraction include methyl methacrylate, methyl acrylate, ethyl methacrylate, ethyl acrylate, isopropyl methacrylate, styrene, vinyl acetate, vinyl chloride, vinyl toluene, acrylonitrile and methacrylonitrile, as homopolymers or copo-lymers, or any one or more of the above with maleic anydride, crotonic acid, acrylic acid, mono methyl maleate, mono ethyl maleate, mono-n-butyl maleate, mono-sec-butyl maleate, mono-ter-butyl maleate, monobenzyl maleate, mono-2-ethylhexyl maleate, mono-n-octyl maleate, mono methyl fumarate, mono ethyl fumarate, methacrylic acid, dimethylaminomethyl methacrylate, or terpolymers or tetrapolymers of any of the foregoing. When this polymerization is carried out, part of the monomer polymerizes with the precursor molecule ~solvated backbone) to form a graft copolymer which is one form of complex tailored molecule for the second liquid toner, and this serves to stabilize any disperse polymer particles which are not grafted.
It will be appreciated that the dispersed phase which, in prin-ciple, is the non-solvated pol~meric moiety of the complex amphipathic resin molecule~ also may include dispersed non-grafted nonsolvated polymer particles. Although the latter are not particularly desirable by virtue of S'Z'~6 their non-solvation, they are aggregatable and9 moreover, are able to be-having electrophoretically so that they are capable of being selectively attracted to differentially electrostatically charged areas, whereby to form a graphic representation by electrostatography.
With a latex of the fcregoing character constituting the complex tailored amphipathic resin molecule as thus far described, the fixative (substrate bonding) and dispersant functions are combined into a single molecule which will behave properly in an electrostatographic system That is to say, this molecule, of which there are a great number in any particular second liquid toner, will be capable of charge direction and fixation and yet will not, because of the solvated moiety,tend to settle so that it has a "built-in" dispersing ability.
This complex tailored mo~ecule, together with the solvent system, is cnpable, by itself, in conjunction with a charge director, of use as a second liquid toner because it need not form a visible selective deposition on a differentially electrostatically charged substrate, e.g. when used to deposit an image that will be used as a lithographic master. However, it is additionally desirable for the second liquid toner to contain a color rang-ing from black to white through all of the various hues. Phrased different-ly, it is desirable to color the suspended latex particles to that when theyare preferentially attracted to differentially electrostatically charged regions of a substrate and deposited thereon, the films left by the deposit ("film" is here used in a sense not of a broad continuous layer but, rather, of a coating ~hich may cover only a physically small portion of an area and may have any type of peripheral configuration depending upon the image that is to be produced) will likewise be cfflnred so that they can be readily visible and also, if desired, so that a specific color can be created.
One way of imparting the color is by using either pigments or dyes added to the latex and physically dispersing them therein as by ball ?89Z76 milling or high shear mixing.
The pigment employed in the second liquid toner can be any one of the many now known to the art in connection with liquid electrostato-graphic developers. As is well known, t~lese pigments essentially constitute very fine solid particles the size of which is in the submicron range and which are opaque en masse. They are insoluble in the liquid system. Typical pigments are those listed hereinabove with respect to the first liquid toner.
When the dispersed phase is colored by pigment, such preferably are non-reactive with the amphipathic polymer of the second toner and with the constituents of the first liqu.d toner. It is believed that pigment particles are held to the non-solvated latex polymeric moietyby second order forces onlyJ i.e., are thus held to the dispersed phase of the complex amphipatic resin molecule.
In another form of the second liquid toner pigments or dyes are employed which are chemically bonded to the latex, that is to say, which become chemically bonded to and are part of the complex molecule. The che-mical bonding can be to the precursor before the graft or block polymeriza-tion of the added chains or it can be to the chains added by graft or b}ock polymerization.
As to the dyes, as distinguished from pigments, these may be used to color the specific complex amphipathic resin polymer molecule of the second liquid toner and specifically to color the dispersed non-solvated phase thereof by being held thereto by second order or surface adsorption forces or the dyes can be chemically reacted with the complex tailored molecule, either after its formation, or to the precursor, or to the chain as it is being or after it has been grafted or block polymerized.
The dyes are incorporated in the second liquid toner by second order or surface adsorption forces, as by heating the latex and dye together for a sufficient time, for example, one to twelve hours. One type of example 39~7~

o such dyes is disperse dyes for dyeing polyester and copoly~ers of acry-lonitrile and vinyl chloride where the dispersed phase is a polyester or a copolymer of acrylonitrile and vinyl chloride. Such dyes include: Latyl Orange 3R (DuPont) (C.I. Disperse Orange 26~; Calcosperse Yellow GL (American Cyanamid) (C.I. Disperse Yellow 57); Calcospers Blue B ~American Cyanamid) (C.I. Disperse Blue 77); Foron Blue BGL (Sandoz Inc.) ~C.I. Disperse Blue 73);
Latyl Brown MS (DuPont) (C.I. Disperse Brown 2); and Latyl Violet BN ~DuPont) (C.I, Violet 27). Other examples of such dyes are basic dyes for polyacrylic~, where the dispersed phase is a polyacrylic. Typical o~ such dyes are: Sevron Blue BGL (Dupont) (C~I. Basic Violet 15);Deorlene Brilliant Red 3B (Ciba) (C.I.
Basic Red 26); Calcozine Acrylic Blue G (American Cyanamid) (C.I. Basic Blue 38); Astrazon Yellow Brown GGL (Farbenfabriken Bayer) (C.I. Basic Orange 30);
and Astrazon Red SBL (Parbenfabriken Bayer) ~C,I. Basic Red 24), A better approach and one which is preerred in a more sophisticated ~orm of the secon~ liquid toner is to create a dispersed (non-solvated) phase of a copolymer containing reactive groups which will react with reactive groups of a chromophoric nature, for example, a dispersed phase of a copolymer containing basic groups which can be reacted with acid dyes. An example of a dispersed phase of a latex which can be used in the foregoing manner is a ter-polymer of acrylonitrile, 2-methyl-5-vinyl pyridine and vinyl acetate. Such terpolymer can be reaction dyed Wit}l dyes containing acid groups of which ex-amples are : Pontacyl Brilliant Blue A tDuPont) ~C.I. Acid Blue 7); Calcocid Brilliant Blue PFR (American Cyanamid) ~C.I. Acid Blue 104); Pemazo Brown N
(General Aniline) (C.I. Acid Brown 14); Crocein Scarlet N ~DuPont) tC.I. Red 73); Oxanal Yellow I ~Ciba) ~C.I. Acid Yellow 63); and Benzyl Black 4BN (Ciba) ~C.I, Black 26A).
Such a complex tailored molecule is tri-functional. It contains not only the dispersant and fixative functions but also the coloring functions. Suc~
a second liquid toner has an essentially mono-dispersed phase, i.e., a small range of variation of particle size.

The names given are those used in commerce; many, if not all, are Trademarks ~89Z7~

An alternate method of creating the more sophisticated complex tri-functional amphipathic resin molecule which embodies the aforesaid three func-tions of fixing, dispersing and coloring is to create a dispersed phase of a copolymer containing acid groups which then are rcacted with basic dyes (in-stead of with the aforesaid acid dyes). An example of a dispersed phase of such a latex is a copolymer of vinyl acetate-maleic acid. This is dyeable with dyes containing basic groups of which examples are : Magenta (C.I. Sol-vent Red 41, C.I. No. 42510B), Crystal Violet (C.I. Solvent Violet 9, C.I. No.
42555B), Bismarck Brown ~C.I. Solven~ Brown 12, C.I. No. 21010B), Victoria Blue BA (C.I. Solvent Blue 4, C.I. No. 44045B), Victoria Blue R (C.I. Solvent Blue 6, C.I. No 44040R), Victoria Blue 4R (C I. Solvent Blue 2, C.I. No, 43563B), Copying Black SK (C.I. No 11975), Janus Green B (C.l. No. 11050), Auramine 0 tC,I. Solvent Yellow 34, C.I. No. 41000B), Victoria Green (C.I.
Solvent Green 1, C.I. No. 42000B), and Rhodamine (C.I. Solven~ Red ~9, C.I.
No, ~5170B) Still another method of creating a tri-functional complex tailored amphipathic resin molecule for the second liquid toner by virtue of a chemical reaction for bonding the color agent to the block or graft modified precursor is to create a dispersed phase of a copolymer containing electron acceptor groups, for example, maleic acid or crotonic acid which are Lewis acids and which are then reacted with color precursors that are well known to the art.
An example of this latter trl-functional sophisticated complex molecule is a terpolymer of maleic anhydride-vinyl acetate-styrene (on a solvated backboT~e) and reacted with a color precursor such for instance as bis (p-dimethylamino-phenyl)-benzotriazyl methane. A second liquid toner embodying the foregoing complex molecule will, ~ se, produce a deep blue colored deposit.
Where the pigment or dye is reacted with the added group in the dis_ persed phase, the amount of pigment employed can fluctuate from as low as 5%
to a theoretica} 100% of the calculated stoichiometric amount in the second liquid toner. Nevertheless, it is preferred to have the amount of dye or The names given are those used in commerce; many, if not all, are Trademarks - 38 _ 1C~8~27~;

pigment thus incorporated vary between about 10% and 50% of the stoichiometric amount, with best results having been obtained at about 25~ of the stoichio-metric figure.
There is yet another way for coloring latexes of the second liquid toners. This is to color the precursor itsel, which is to say, the backbone that is the solvated phase rather than to color the dispersed unsolvated phase.
Although there could be used for coloring the precursor some of the methods recited above to color the dispersed phase by chemical reaction or by second order bonds or surface adsorption or even by chemical reactions of color agents with the precursor, a highly preferred method is to employ a dye which is co-polymerized into the precursor itself, that is to say, the solvated backbone, before the backbone is grafted or block polymerized with the non-solvated moieties (chains). An example of such a process is set forth below tEXAMPLE
XVIII) along with many other examples of methods of manufacturing the complex amphipathic resin molecule of the second liquid toner.
It should be observed, moreover, that, if desired, both the dispersed phase and the solvated precursor can be dyed by any of the manners above dis-cussed in detail.
As thus far described, there has been provided a stable latex which constitutes practically all of the necessary ingredients of the second liquid toner, these including the liquid solvent system with the complex amphipathic resin molecule having solvated and non-solvated polymeric moieties and which is tri-functional as to the fixative, dispersant and colorant or includes a separate (non-reacted) color agent. It still is, nevertheless, extremely de-sirab}e to include in the second liquid toner a charge director or directors~
the same adding greatly to the depth of color obtained and aiding in contrast.
~ence, there preferably is included in the second liquid toner as a constitu-ent over and above the solvent system, the complex molecule and a separate colorant, if one is not included as a moiety of the complex ~olecule, a charge director in a useful concentration. In electrostatographic development a 1~892~6 charge director present in a suitable concentration is to all inten~s and purposes a necessity. The charge director or directors chosen for the second liquid toners may be any of ~hose mentioned with respect to the first liquid toner and, indeed, the same charge director or directors are preferably used for both the first and the second liquid toners wbich are mixed to form the hybrid liquid toner of the present invention.
The amounts ofthe different non-carrier constituents of the first and the second liquid toners are capable of extremely wide variation, indeed, so wide that assigning specific figures thereto of the extreme ranges which function satisfactorily in the hybrid toner is largely meaningless. For ex-ample, the amounts will vary with the type of machine, climate, machine speeds, types of paper and experience of the operator, to mention but a few. Also, particularly in the case of the coloring material, the amounts wi}l vary with the intensity of the dye or pigment and the desired de8ree of intensity o the image, Generally speaking, moreover, the amounts of the individual non-carrier constituents will increase or decrease together, although not in strict proportion. Bearing all of this in mind and in order to assist workers in the art in the preparation of hybrid ~oners embodying the present invention, the following represent approximately maximum and minimum amounts of the vari-ous non-carrier constituents per liter of the first and second liquid toners in a wor~ing toner bath.
Por the fixer of the first liquid toner from about 0 05 g. to about 5.0 gs.
For the dispersant of the first liquid toner from about 0.025 g. to about 5.0 gs.
For the pigment of the first liquid toner from abaut 0.025 g. to about 5.0 gs.
For the charge director of the first liquid toner from about 0.0005 g. to about 0.5 g~
For the complex amphipathic molecule of the second liquid toner l~9Z76 wherethe same includes a dye or pigment either chemically reacted therewith or bonded thereto or affiliated therewith by surface adsorption forces from about 0.03 g. to about 30 g.
For the complex amphipathic molecule of the second li~uid toner where the same does not include a color agent reacted or associated therewith from about 0,03 g. to about 30 g.
For the coloring agent of the second liquid toner where the same is not reacted or bound to the complex amphipathic molecule from about 0.03 g.
to about 30 g.
For the charge director of the second li~uid toner from about 1 x 10 6 g. to about 10 g.
The balance of each toner constitutes the liquid carrier.
Examples of di~ferent specific embodiments of the second liquid toners ollow:
The first nine examples are examples of precursors, i.e. examples of the formation of the backbone, that is to say, the spine, of the amphipathic molecule with which a subsequent reaction will later be described in further examples which deal with the formation of the latices from the precursors and toners from the latices.
EXAMPLE XI
In a clean dry 8 oz, glass jar is placed 100 gs. of 2-ethylhexyl-acrylate and 1 g. of AZBN (axobisisobutyronitrile), a polymerization initiator.
The ~ar is placed in a water bath maintained at 75~2C. After about 30 mi-nutes an exothermic polymerization takes place. The temperature reaches a maximum of 120C. in about 5 minutes after the start of the exotherm. After it cools down to 90C. the jar is removed from the water bath, loosely coveTed and placed in a hot air oven at 90C. overnight to complete the polymerization.
The product is a nearly water-white heavy syrup.
EXAMPLE XII
Four hundred grams of petroleum ether (b.p. 90 - 120C) is placed in _ 41 -1(~89Z76 a 1 liter reaction flask equipped with a stirrer, a thermometer, a reflux con-denser, and a dropping funnel and heated to a gentle reflux at atmospheric pressure. A solution of 1.2 g. AZBN in 200 g. of 2-ethylhexyl-acrylate and 6 g. of glycidyl methacrylate is placed in the dropping funnel and allowed to drip into the reflux stream at such a rate that the addition takes 3 hrs. The mixture is refluxed at atmospheric pressure for an additional 2 hrs. at which time 4 g. of acrylic acidJ 0,14 g. of 2, 6-di-tertiary butylphenol and 1 g.
of lauryl dimethyl amine is added. The mixture is refluxed at atmospheric pressure for 12 more hours under a nitrogen blanket to esterify ca. 25% of the glycidyl rings of the copolymer. The product is a straw-colored somewhat vis-cous liquid.
EXAMPLE XIII
In a 500 ml. resin reactor equipped with a stirrer, a thermometer, a re1ux condenser and a dropping unnel is placed 250 gms. of Isopar E. The solvent is heated to 93ilC, and 250 gs, of 2-ethylhexyl acrylate containing 1.5 gs. of AZBN is added dropwise to the hot solvent over a period of 3 hrs.
The mixture is maintained at 93ilC for 3 additional hours to complete poly-merization. All reactions take place in the reactor at atmospheric pressure.
The product is a slightly viscous straw-colored liquid.
EXAMPLE XIV
In a 1 liter reaction flask equipped with a stirrer, a thermometer and a re1ux condenser is placed 400 gs. of petroleum ether (b.p. 90 - 120C.) and the same is then heated at atmospheric pressure to a moderate rate of re-flux. A solution is made of 194 gs. lauryl methacrylate, 6.0 gs. of glycidyl methacrylate and 3 0 gs. of benzoyl peroxide paste (60% by wt. in dioctyl phthalate) and placed in a 250 ml. dropping funnel attached to the reflux con-denser The monomer mixture is allowed to drip into the refluxing solvent at such a rate that it requires 3 hrs, for the total amount to be added. After refluxing 40 minutes at atmospheric pressure beyond the final addition of mono-mer, 0,5 gs. of lauryl dimethyl amine is added and the ref}uxing is continued t39Z76 at atmospheric pressure for another hour. Then 0.1 g hydroquinone and 3.0 gs.
methacrylic acid are added and refluxing continued under a nitrogen blanket until ca. 52% esterification of the glycidyl groups is effected (about 16 hours). The resulting product is a slightly viscous straw-colored liquid.
EXAMPLE XV
Example XIV is repeated except that final refluxing is concluded when ca. Z5% esterification of the glycidyl groups has been effected.
EXAMPLE XVI
In a 5 liter jacketed glass reactor open to the atmosphere and equipped with a stirrer, a thermometerJ a nitrogen bubbler and a reflux con-denser is placed 2400 gs. of Isopar G. The solvent is heated to 110~1C. by circulating hot triethylene glycol through the jacket. The temperature of the glycol is controlled by a proportional heating unit with its temperature sensor in a reservoir of the heating fluid from which the hot liquid is pumped to th~ reactor and subsequently returned to the reservoir for f~rther heating.
A three-way valve arrangement allows tl~e glycol heating system to be isolated from the jacketed reactor so that cold water can be immediately supplied to the jacketed reactor to keep the temperature constant during the polymeriza-tion exotherm when necessary. When the solvent reaches the foregoing tempera-ture, a mixture of 1035.7 gs. isodecyl methacrylate, 36.0 gs, glycidyl meth~
acrylate and 18.0 gs. Luperco ANS-50* (a paste consisting of 50% benzoyl per-oxide by weight in dioctyl phthalate) is added at a constant rate over a 3hr.
period through a dropping funnel attached to the condenser After all of the monomer solution has been added, the reaction mixture is held at 110~1C. for another 30 min. Then 3.0 gs. lauryl dimethyl amine is added and the reaction mixture again held at said temperature for 1 hr. At this point 0.6 gs hydro-quinone is added and the nitrogen bubbler is started to provide a nitrogen blanket during the esterification. Then 18.0 gs. of methacrylic acid is added and the reaction temperature is maintained until an acid drop indicates that 25% of the glycidyl rings have been esterified ~ca. 8 hrs.). The product that results *Trade Mark B

1~92~6 is a slightly viscous straw-colored liquid.
EXAMPLE XVII
Using the same apparatus as described in EXAMPLE XVI, 1440 gs. of Isopar G is warmed to 110+1C. To this hot solvent, a solution of 1278.~ gs.
stearyl methacrylate, 32.4 gs. glycidyl methacrylate, and 16. 2 gs. Luperco ANS 50 in 720 gs. of Isopar G is added through a dropping funnel attached to the condenser over a 3 hr. period, the temperature being maintained at 110+1C.
After all of the monomer solution has been added, the reaction mixture is held at llOilC. for another 40 mins. Then 2.8 gs. lauryl dimethyl amine is added and the reaction mixture again held at said temperature for 1 hour. At this point 0.54 gs. hydroquinone is added and the nitrogen bubbler is started to provide a nitrogen blanket during the esterification. Then 16.2 gs. methacry-lic ac~d is adde~ and the reaction temperature i5 m~intained until an acid drop indicates that 24% of the glycidyl rings have been esterifle~ ~ca. 7 hrs.).
The product is a slightly viscous straw-colored liquid.
EXAMPLE XVIII
In a 500 ml. 3-neck round-bottom reaction flask open to the atmos-phere and equipped with a stirrer, a thermometer, a thermocouple for a thermo-regulator and a reflux condenser, is placed 197.8 g. Isopar G. The solvent is warmed to 110+1C, with stirring. A mixture of 96.0 g. lauryl methacrylate 3,0 g, glycidyl methacrylate, 0,74 ~s. benzoyl peroxide (99%), S0 mls, of benzene and 5,0 gs. of p -phenylazoacrylanilide is prepared by stirring on a magnetic mixer for 30 minutes at room temperature. Most but not all of the p-phenylazoacrylanilide dissolves. This mixture is added in 5 ml. increments at 5 min.intervalso~er a period of 3 hrs. to the solvent in the flask. The mixture is kept well stirred so that each addition will be identical in compo-sition, After the last addition, the mixture is allowed to react at llOilC.
for 45 minutes and then 0.25 gs. lauryl dimethyl amine is added. After one more hour of reaction time, 0.05 g hydroquinone is added and a nitrogen sparge is started. Then 1.49 g. methacrylic acid is added and the temperature of the 27~;

reaction mixture is maintained at 110_1C. until the drop in acid value indi-cates that 25% of tho glycidyl rings have been esterified tca. 6 hrs.). The batch is cooled to 50C. and added slowly to 2700 mls. of m0thyl alcohol with continuous ~igorous agitation. The precipitated polymer is allowed to ssttle for 24 hours and is recovered by decantation. The polymer is air-dried at room temperature for 48 hours and then for 4 hours at 50C. This polymer is then dissolved in 300 gs. of Isopar G giving a deep clear orange solution to be used in latex production.
EXA~PLB XIX
In a 500 ml. resin reactor equipped with a stirrer, a thermometer, a reflux condenser open to the atmosphere, a nitrogen bubbler and a dropping funnel is placed 197.8 gs. Isopar K and warmed to 110+1C. A mixture of 86.0 gs. lauryl methacrylate, 9.9 gs. N-l, 1, 3, 3-tetramethyl butyl mflthacrylamide, 2.97 ~s. glycidyl methacrylate and 0.74 gs. benzoyl peroxide is placed in the dropping funnel and added to the hot solvent at a constant rate over a 3 hr.
period, the temperature being maintained at 110+1C. The polymerization is allowed to continue for 6 more hours after the last of the monomer mixture has been added (a sample of the mixture analyzed at this time reveals a 96.4% poly-merization). Then 0.12 gs. lauryl dimethyl amine is added to the mixture and it is heated for another hour at which time 0.05 g. hydro~uinone is added and a nitrogen sparge begins. Next 1.49 gs. methacrylic acid is added and the temperature of the mixture maintained a~ 110+1C until a chcck of the acid con-tent indicates that 25% of the glycidyl rings have been esteri~ied (ca. 9 hrs.).
The product is a somewhat viscous, straw-colored liquid.
LATICES
The following are examples of latices for the second liquid toner employing those of the foregoing precursors which yield better results.
EXAMPLE XX
In a 500 ml. resin reactor open to the atmosphere, and equipped with a stirrer, a thermometer and a reflux condensor, is placed 360 g. Isopar K;

_ 45 -Z'7~i 185 gs, vinyl acetate, 30 gs. of the precursor prepared according to EXAMPLE
XIV, 15 gs. methyl hydrogen maleate and 4 gs. AZBN. The temperature of the reaction mixture is raised to 85+2C. and held there for 4 hours. An additio-nal 2 gs. of AZBN is then added to the mixture and the polymerization is car-ried out for another 4 hours at 85+2C. A thin blue white latex is obtained with a particle size of 0.04 to 0.2 microns.
EXAMPLE XXI
A Mixture of 27.5 gs. of the precursor solution prepared according to EXAMPLE XV, 30 g. me~hyl methacrylate, 0.5 g. methacrylic acid and 0.4 g.
AZBN is charged along with 134 g. petroleum ether (b.p. 60 - 90C.) and 29.5 g.
Isopar G into a 500 ml. resin reactor open to the atmosphere and is gently refluxed for 20 minutes. Then 1.4 g. of a 10% solution by weight of n-octyl mercaptan in Isopar K is added to the reactor. A mixture of 166. g. methyl methacrylate, 3.4 g. methacrylic acid, 3.0 g. of the 10% solution of n-octyl mercaptan in Isopar K, and 0.4 g. AZBN is dripped at a constant rate into the stream of the gently refluxing condenser over a period of 2-1/2 hours. Gentle reflux is continued for another 1/2 hour and the batch is then cooled to room temperature. The resulting product is a smooth, white, slightly Yiscous latex with a particle size of 0.4 - 1.0 microns.
EXAMPLE XXII
In a 2 liter 3-neck round bottom ~lask open to the atmosphere and equipped with a stirrer, a ~hermometer, and a reflux condenser is placed 848.5 g. Isopar K, 70.7 g. of the precursor solution prepared according to EXAMPLE XVIII, 471.4 gs. vinyl acetate and 9.4 g. A2BN. The reaction mixture is heated with constsnt agitation to 86C. and the temperature is maintained for 4 hours. The resulting product is a light lemon yellow latex with a par-ticle size less than 0.2 micron and a solids content of 31.7S.
EXAMPEE-XXIII
A mixture of 18 g. of ~he precursor solution prepared according to EXAMPLE XV, 110 g, hydroxypropyl methacrylate, 3 g. AZBN and 200 g. Isopar K

is placed into a 500 ml. resin r0actor open to the atmosphere and heated with constant agitation. The exotherm begins at 78 - 80C. and the temperature rises to a maximum of 120C. and then drops back to 80C. Polymerization is complete in 30 minutes. A slight amount of over-size large particle material is removed by pouring the mixture through a 200 mesh nylon screen. A white latex of 0.5 micron particle size is obtained.
EXAMPLE XXIV
A solution of 15 g. of Bakelite* Union Carbide poly ~vinyl ethyl ether) (Vinylite* EDBM, a poly(vinyl ethyl ether) with a reduced viscosity of 4.0~0.5 as determined by using 0.1 g. polymer in 100 mls. benzene at 20C., sp.
gr. 0.968 at 20C.) in 285 g of Isopar G is made in a 500 ml. resin reactor open to the atmosphere through a reflux condenser by shaving the resin into small particles and agitating it in the solvent at 90C. for 20 hours. The solution is cooled to room temperature and 1~5 g. vinyl acetate and 2.0 g. ben-zoyl peroxi~e (g9%) is added. Th~ batch is heated until reflux occurs ~ca, 95C.) and the temperature is maintained for 4 hours. After 45 minutes of haating at said temperature, the solution becomes turbid. After 1 hr. 15 mins.
of heating at said temperature the batch becomes so viscous that although the stirrer continues to run, no agitation is visible and the product appears to be a thick white cream. After 2 hours of heating at said temperature the batch begins to thin and at the end of 3 hours of such continued heating it thins to the consistency of heavy cream where it remains. At the end of the 4 hours, the dropwise addition of a solution of 1.5 g. lauroyl peroxide in 30 gs. Isopar G is begun and completed over a 3 hour period while the temperature of the sys-tem is maintained at 95+2C. The mixture is held at this ~emperature for 3 -more hours after the last of the lauroyl peroxide solution has been added.
The result is a white latex of 0.7 - 1.5 micron particle size.
EXAMP~E XXV
A mixture of 180 g, Isopar K, 100 gs. vinyl acetate, 15 gs, precur-sor solution prepared according to Example XVI, and 2 gs. AZBN is placed in a *Trade Mark B

500 ml. reaction flask equipped with a thermometer, a stirrer, a reflux con-denser and an internal cooling coil. The reacting mixture is heated to and maintained at 86+2C. for 4 hours with continuous agitation. The flask is open to the atmosphere through the cooled reflux condenser. Occasionally it is necessary to cool the reacting mixture by running water through the cooling coil during the early stages of the reaction. The resulting product is a thin white to blue-white latex whose particles are too small to be viewed in an optical microscope. The latex contains 33% solids.
EXAMPLE XXVI
In a 5 liter jacketed glass reactor equipped with a thermometer, a stirrer and a reflux condenser (the apparatus of EXAMPLE XVI) is placed 2160 gs. Isopar K; 180 gs. precursor prepared according to EXAMPLE XV, 1140 gs.
vinyl acetate, 60 gs. N-vinyl-2-pyrrolidone and 2~ gs. AZBN. The reaction mixturo is heated to and maintained at 86~2C. ~or 4 hours. The resulting product is a thin white to blue-white latex whose particles are too small to be viewed in an optical microscope.
EXAMPLE XXVII
In a 500 ml. resin reactor open to the atmosphere and equipped with a stirrer, a thermometer and a reflux condenser is placed 360 gs. Isopar K, 190 gs. vinyl acetateJ 30 gs. of the precurscr prepared according to EXAMPLE
XV, lO gs. crotonic acid and 4 gs. AZBN. The temperature of the reaction mix-ture is raised to 85~2C. and held ther~ for 4 hours. An additional 2 gs. o~
~ZBN is then added to the mixture and the polymerization is carried out for another 4 hours at 85+2C. A thin white latex is obtained.
EXAMPLE XXVIII
In a 500 ml. resin reactor open to the atmosphere and equipped with a stirrer, a thermometer, a thermoregulator, a re~lux condenser and an inter-nal cooling coil is placed 40 gs. Lube Oil Additive 564, 284, gs. Isopar K
and 2.2 gs. benzoyl peroxide ~99%). With continuous agitation, the batch is heated to 80C. and maintained at that temperature for 2 hours. At this time a mixture of 10 gs. crotonic acid and 190 gs. vinyl acetate is added aI1 at once to the reacted precursor which has become a dark amber. When the temp-erature of the reaction mixture has returned to 80C., AZBN is added to the mixture in 0.5 g. increments at 10 min. intervals until a total of 4.6 gs.
has been added (3 hrs. 40 min.). The reaction mixture is maintained at 80+ 2C. for 2 hours after the addition of the AZBN is complete. A white latex is obtained of 35.7% solids with a particle size <0.3 micron.

EXAMPLE XXIX
An example of a dyeing procedure for a latex in which it is be-lieved that the dye does not react with the latex (although it is possible that it may be associated therewith by hydrogen bonding) is a mixture of 10%
by weight Sudan Orange RA (Solvent ~ellow 14, C.I. No. 12055) in Isopar K
the same being ball milled for 4 hours. Twenty gs. of this dispersion is added to 100 gs. of the latex prepared according to EXAMPLE XXVII and the mixture is heated at 130-135F. for 8 hours with constant mechanical agita-tion. The mixture is filtered ~hrough a 200 mesh nylon cloth and allowed to cool to room temperature. A golden orange-colored latex is obtained.
SECOND LIQUID TONERS
The following are typical examples of second liquid toners in con-centrated form employing some of the foregoing latices.
EX~MPLE XXX
One hundred gs. of the latex produced in EXAMPLE XXVIII
is placed in a 500 ml. 3-neck round-bottom open top flask equipped with a stirrer, a reflux condenser and a thermometer, and 2 gs. of Victoria Blue Base BA (C.I. ~o. 44045B) is added to it. The tem-~9Z716 perature is raised to 80'5C. and held ~here for 2 hours. The blus latex which results is cooled and filtered through a 200 mesh nylon cloth to remove residual dye. To this colored latex there is added 2.5 gs. of a 1% by weight solution of aluminum 3,5-diisopropylsalicylate in Isopar K to form a toner concentrate. Four gs. of this dyed latex is dilu~:ed with 2000 mls. Isopar K
to form a working toner bath. This latex is a ~on~lex molecule including in addition to the solvated and non-solvated polymeric moieties (in the liquid solvent system) a color agent moiety. The charge director is a separate com-pound. When used by itself as a toner bath in a Dennison Standard Book Copier, blue prints are obtained.
FXAMPL XXXI
To the batch of latex as prepared in EXAMPLE XXVII is added 13.65 gs. Victoria Blue Base BA and the temperature of the mix~ure is maintained at 85~2C. fo~ 3 hours. The dark blue latex is filtered through n 200 mesh nylon cloth and cooled to room temperature. To this colored latex there is added 25 gs. of a 1% solution of the aluminum salt of 3,5-di-t-butyl gamma resorcylic acid in Isopar G to form a toner concentrate. This toner concent-rate likewise represents an example of a color agent moiety which is part of a complex amphipathic polymeric molecule. Four gs. of this concentrate is added to 2000 mls. Isopar G to form a working toner bath. This toner bath in a Dennison Standard Book Copier, gives intense, bright blue images.
EXAMPLE XXXII
To the batch of latex as prepared in EXAMPLE XX is added 6.8 gs.
Auramine 0 and 6.8 gs. Rhodamine and the temperature of the mixture is main-tained at 85~2C. for 3 hours. The now bright yellow-orange latex is filtered through a 200 mesh nylon cloth and cooled to room temperature~ To this colored latex there is added 10 gs. of a 1% solution of the aluminum salt of 3,5 di-butyl gamma resorcylic acid in Isopar G to form a toner concentrate. This toner concentrate likewise represents an example of a color agent moiety which is part of a complex amphipathic polymeric molecule. Ten gs. of this concent-92~6 rate is added to 2000 mls. Isopar G to form a working toner bath. This mix-ture, when used by itself as a toner bath in a Scott 3D Copier, gives extreme-ly bright orange images.
EXAMPLE XXXIII
To the bath of latex as prepared in EXAMPLE XX is added 13.65 gs.
Victoria Green and the temperature of the mixture is maintained at 85~2C.
for 3 hours. The now dark bluish green latex is filtered through a 200 mesh nylon cloth and cooled to room temperature. To this colored latex there is added 40 gs. of a 1% solution of the aluminum salt of 3,5-di-t-butyl gamma resorcylic acid in Isopar G to form a toner concentrate. This toner concent-~ate likewise represents an example of a color agent moiety which is part of a complex amphipathic polymeric molecule, Four gs. o~ thia concentrate is added to 2000 mls, Isopar G to form a working toner bath. This mixture, when used by itself as a toner bath in a Dennison Standard Book Copier, gives in-tense, bright bluish green images.
EXAMPLE XXXIV
Three gs. of the latex prepared according to EXAMPLE XXV are ground together with 0.25 gs, of Raven 11 in a mortar and pestle, has added to it 30 drops of a 1% solution of the aluminum salt of 3,5-di-t-butyl gam~l resorcylic acid and is thinned with a little Isopar K to form a toner concentrate, The concentrate is diluted to a volume of 2000mls, with Isopar K to form a working toner bath When this suspension is used by itself as a toner bath in a Dennison Standard Book Copier, good black prints are obtained.
EXAMPLE XXXV
To the batch of latex as prepared in EXAMPLE XXVII is added 13.65 gs. Crystal Violet (C.I. No, 42555B) and the temperature of the reaction mix-ture is maintained at 85~2C. for 3 hours. The colored latex is filtered through a 200 mesh nylon cloth and cooled to room temperature. To this colored latex there is added 0 05 gs. aluminum dresinate to form a toner concentrate.
This toner concentrate likewise represents an example of a color agent moiety _ 51 _ which is part of the complex amphipathic polymeric moleculeO Three gs of this latex is added to 2000 mls Isopar K to form a working ~oner bath. This~
bath, when used by itself in an A-M Sunbeam 500 Copier, gives very good viole~
prints.
EXAMPLE XXXVI
To the batch of latex as prepared in E~LE XXVII is added 13.65 gs. Magenta (C.I. No. 42510B) and the temperature of the reaction mixture is maintained at 85+2C. for 3 hours. The colored latex is filtered through a 200 mesh nylon cloth and cooled to room temperature. To this colored latex there is added 0.05 g. aluminum dresinate and 20 gs. of a 10% solution of Aerosol OT in Isopar K to form a toner concentrate. This toner concentrate likewise represents an example of a color agent moiety which is part of the complex amphipathic polymeric molecule. Three gs, of this latex is added to 2000 mls, Isopar G to orm a working toner bath. When used by itself as a toner bath in a DeM ison Standard Book Copier, magenta prints are obtained.
EXAMPLE XXXVII
Four gs. of the latex produced according to the EXAMPLE XXIX has added to it 20 drops of a 1% solution of aluminum diisopropyl salicylate in Isopar G to form a toner concentrate. Said concentration when diluted with 2000 mls. Isopar K forms a working toner bath. This mixture, when used by itself as a toner bath in a Dennison Standard Book Copier, gives yellowish-orange images.
All but one of the foregoing examples o$ second liquid toners have but a single color agent. Optionally, plural color agents may be used, and it is usually preferred to employ two or more color agents, the conjoint ac-tion of which is to produce a deep color such, for example, as a brown~ black, blue-black or purple-black.

~9276 The preparation of the second liquid toner can be carried out in still another fashion, although it still involves, of course, the use of a multi-functional complex polymeric molecule having a polymeric moiety solvated by and a polymeric moiety unsolvated by the liquid solvent system; this is to form the amphipathic polymer polymeric molecule in a solvent in which such molecule is completely solva~ed and then by adding another solvent which is a non-solvent for a polymeric moiety of the polymer but is miscible with the first solvent, and desolvating this polymeric moiety of the amphipathic poly-mer polymeric molecule while said desolvated polymeric moiety remains bonded tothesolvated polymeric moiety of the polymer, i.e., remains as a part of the polymer. If desired, all or a part of the first solvent can then be with-drawn. This is an extremely easy general way for obtainlng a block amphipa-thic polymer as the dispersed phase in accordance with the present invention.
As an example of the foregolng a block polymer of polyisoprene-polystyrene-polyisoprene is formed by anionic polymerization.
EXAMPLE XXXVIII
9.2 gs, of styrene are added to 60 cc. of tetrahydrofuran contain-ing 3.3 x 10 4 mole of sodium naphthalene (a catalyst at -80C. in a three-neck round bottom flask equipped with a mechanical stirrer, a thermometer and a nitrogen inlet in a dry ice bath. The reaction is completed in 15 minutes, resulting ln the formation of a "living" polystyrene polymer. Upon completion of polymerization 6.3 gs. of isoprene is added (still at -80C.) and the is~prene polymerizes on the living ends of the polystyrene to form a block polymer. The now living ends of this block polymer, which block polymer is solvated by the tetrahydrofuran, are ~hen grafted on to a suitable backbone _ 53 -polymer as by reacting at room temperature with 3 gs. of the precursor solution of EXAMPLE XVIII to form the amphipathic polymer. Said backbone (precursor) polymer likewise is solvated by the tetrahydrofuran and such poly-mer is made the solvated phase of a non-solvent for the block polymer of the system. Thereby the block polymer moiety is desolvatedO The non-solvent employed is OMS which is added at room temperature to the solvated poly ~styrene/isoprene)/poly(lauryl methacrylate - glycidyl methacrylate - meth-acrylic acid - p-phenylazoacrylanilide) amphipathic polymer to form a latex.
To this colored (golden-yellow) latex is added 2 gs. of a 1% solution of the aluminum salt of 3,5-di-t-butyl gamma resorcylic acid to form a toner concen-trate. Fifteen gs. of the concentrate is diluted with 2000 mls. oE OMS to form a working toner bath. When this toner is employed by itself as a toner bath in a Dennison Standard Book Copier good yellow prints are obtained.
EXAMPL~ XXXIX
_ One hundred grams of the latex produced in EXAMPLe XXVII is placed in a 500 mls. 3-neck round bottom open top 1ask equipped with a stirrer, a reflux condenser and a thermometer, and 1.2 gsO of Victoria Green (C.I. No.
42000B), 2.4 gs. Bismarck Brown (C.I. No. 21010B) and 0.3 g. Rhodamine Base (C~Io No. 45170B) are added to it. The temperature is raised to 80 ~ 5C. and held there for two hours. The black latex which results is cooled and filtered through a 200 mesh nylon cloth to remove residual dye. To this colored latex is added 5 mls o aluminum dresinate solution, 10% by weight in isopar H, to form a toner concentrate. To form a working toner bath, six grams of this concentrate is diluted uith 2000 mls. Isopar H. When used by itself as a toner bath in a Dennison (Trademark) Standard Book Copier, dense black prints are obtained.
EXAMPLE_XL
To one hundred grams of the latex prepared in EXA~PLE XXV is added 5 mls of a 1% solution by weight of aluminum 3,5-diisopropylsalicylate in Isopar G to form a toner concentrate. To use this concentrate as a developer, - 5~ -2t7~

4 grs. thereof are added to 2000 mls. Isopar G. When tested in a copierJ such as the Scott 3D, images are obtained which are shiny and visible by light reflected at an acute angle from the image.
To prepare a hybrid toner embodying the present invention either of two procedures preferably is employed. One is, as indicated previously, simply to mix together a previously prepared liquid toner and a previously prepared second liquid toner. Said liquid toners can be incorporated in the hybrid toner over a wide range of proportions varying from about 1/2% to 99.5%
of either liquid toner with the remainder being the other liquid toner. Any suitable mixing equipment, either mechanical or manual, can be employed. The other method of preparation is to mix together with a suitable liquid carrier all of the various constituents which, if properly segregated, would form the first and second liquid toners.
At this time, it should be reiterated that the hybrid toner pre-ferably utilizes a liquid carrier which is common to both the first and the second liquid toners, although this is not an absolute necessity, and if two separate solvent systems, are employed they should be compatible. Moreover, preferably, although not necessarily, the same charge director(s) is ~are) used or both toners. This makes it less likely that the two toners will be non-compatible and also simplifies procedure where the hybrid toner is made by directly mixing together all of the constituents thereof rather than by first preparing the first liquid toner and the second liquid toner separately and then mixing them together. In addition, it should be observed that certain charge directors,when used in combination, exert a synergistic effect. These haYe been found to be charge directors which are solvated in the solvent system. The synergism is not necessarily desirable inasmuch as the effect of the charge director peaks on the density vs. concentration of charge director curve and, thereforeJ because of the synergism the amounts of charge director, where two or more of these are employed, should be adjusted downwardly, such adjustment being within the skill of workers in the art and having to be ~(?8~?~76 selected differently for every mixture of such charge directors and being further dependent upon the concentration and kinds of pigments and color agents employed. In the ~xamples given subsequently where plural charge directors are given for a single hybrid toner, such adjustment to take syner-gistic effects into account always has been made.
There are other considerations which should be taken into account, to wit, that the amphipathic molecule ~latex) of the second liquid toner is capable of functioning, at least in part, as a dispersant for the first liquid toner so that it is within the ambit of this invention to omit or reduce the amount of any other dispersant for the first liquid toner, said complex mole-cule being sufficient with certain other constituents of the first liquid toner to supply all or part of the necessary dispersing capability. The color agent of either o the two liquid toners can be omitted even if a visible developed image is Tequired inasmuch as one color agent can suffice to supply the neces-sary visibility. ~lowever, it usually is desirable for both toners to contain color agents which, in the case of the amphipathic molecule, may be polymeric moiety of the complex molecule. The same color agent can serve as the color agent for the two toners, e.g. as the color agent for the hybrid toner.
Set forth below in two sections are examples of hybrid toners embodying the present invention, the first section of examples constituting mixtures of the first toner and the second toner which are prepared by mixing together pre-prepared fiTst and second liquid toners. The second section constitutes examples of hybrid toners prepared by mixing together the con-stituents desired to be present in the finished hybrid toner but without the previous preparation of the first and second liquid toners separately from one another.
The amounts of the different non-carrier constituents of the hybrid toners are, like those of the first and the second liquid toners, cap-able of so wide a variation that it is not meaningful to give any specific ranges ~lowever, as a guide, the following represent approximately maximum and minimum amounts of the various non-carrier constituents per liter of liquid toner in a working hybrid toner bath.
For the fixer (as hereinbefore described) which is a separate chemical compound or composition ~a chemical entity separate from the disper-sant) from about 0.0025 g. to about 5 gs.
For the dispersant ~as hereinbefore described) which is a chemical compound or composition that is chemically separate from the fixer from about 0.5 g. to about 5 gs. As to this dispersant it should be noted that it may embrace the amphipathic molecule alone or in combination with other disper-sants.
For the color agents from about zero g. to about 1.0 g. It should be noted that the absence of color agents is not particularly desirable but is envisioned that no color agents be present in the hy~r.id toner when the same is used in the preparation oE a lithographic master.
Por the charge director ~rom about 1 x 10 6 g, to about 10 gs.
For the complex amphipathic polymeric molecule from about 0.05 g.
to about 30 gs.
The balance of the hybrid toner constitutes the solvent system.

EXAMPLES OF HYBRID TONERS FORMED BY MIXING PREVIOUSLY FORMED
FIRST AND SECOND LIQUID TONER CONCENTRATES AND DILUTING SAME
EXAMPLE XLI
~.5 gs. of the ~irst liquid toner concentrate of EXAMPLE VIII and 0.5 g. of the second liquid toner concentrate o EXAMPLE XXX are addad to 2000 mls of Isopar G. The developer bath is either prepared manually and then added to a copying machine or the components thereof are added separately to the developing tray of a copying machine such as, e.g. the SCM 44 Copier and mixed by the action of the circulating pump. Black dense prints are obtained, free from background.

EXAMPLE XLII
0.5 g. of the first liquid toner concentrate of EXAMPLE VIII and 4.5 gs. of the second liquid toner concentrate of EXAMPLE XXX are added to 2000 mls. of Isopar G to form a working toner bath. When tested in the SCM44 Copier, dense blue black prints are obtained.
EXAMPLE XLIII
In order to obtain a developer for use in the preparation of litho-graphic masters, add 8.0 gs. of the second liquid toner concentrate of EXAMPLE
XXXIX and 0.04 g. of the first liquid toner concentrate of EXAMPLE IX to 2000 mls. Isopar G. This developer gives excellent results in an office copy machine, such as the Scott 3-D copier.
_XAMPLE XLIV
In order to obtain a developer for use in the preparation of micro-fiche images, add 4.0 gs. each of the first and second liquid toner concent-rates mentioned in EXAMPLE XLIII to 2000 mls. Isopar G.
EXAMPLE XLV
Th~ addition of 0.04 gs. of the first llquid toner concentrate of FXAMPLE X and 8.0 gs. of the secon~ liquid toner concentrate of EXAMPLE XL to 2000 mls of Isopar H gives a developer for the Toshiba BD-32 Copier which gives excellent lithographic masters.

EXAMPLES OF ~NBRID TONERS FORMED BY MIXING CONSTITUENTS
WITH A SOLVENT SYSTEM DIRECTLY WITHOUT THE INTERMEDIATE
STEPS OF INDEPENDENTLY FORMING THE FIRST AND SECOND
LInuID TONERS
EXAMPLE XLVI
Ball mill the following ingredients together for 23 hours at 90F.
100 gs. Dymerex 50 gs. Pliolite VlAC-L
60 gs. Toner 8100 500 gs. Solvent 460 Then add 100 gs. Solvent 460 and ball mill at the same temperature for an additional hour. To 145 gs. of the foregoing add 60 gs. of the latex of EXAMPLE XXV (in addition to its functions as a major constituent of the second liquid toner component, this latex acts as a dispersant for the constitutents of the first liquid toner component) and 0.75 g. of aluminum stearate and ball mill for 18 hours at 90F. to form a hybrid toner concentrate. 5 gs. of the 2'76 hybrid concentrate is diluted with 2000mls. Isopar K to form a working hybrid toner bath which ~hen used in a Dennison Mark I Book Copier produces dense black prints, free from background.
Although in this specific example, the two toner components are ball milled together at a somewhat elevated temperature the majority of hybrid toners formed by blending of mixtures of first and second liquid toners are prepared by simple manual or automatic agitation means at ambient temperatures.
EXAMPLE XLVII
20 gs. Dymerex 10 gs. Pliolite VTAC-L

8 gs. GAF Black M Toner 120 gs. Solvent 460 1 g. Aluminum stearate 30 gs. Latex o EXAMPLE XXV
The above ingredients are ball milled at 90~. or 18 hours to form a hybrid toner concentrate. To prepare the working hybrid toner bath, 5 gs. of hybrid toner concentrate is dispersed in 2000 mls. Isopar K. When used in a Dennison Mark I Book Copier, dense black prints are obtained free from background. Note that the latex also acts as a dispersant for the pigment and the charge director.
EXAMPLE XLVIII
20 gs. Dymerex 10 gs. Pliolite VTAC-L
15 gs. GAF Black M Toner 120 gs. Solvent 460 2 gs. Lube Oil 564 1 g. Aluminum stearate 30 gs. Latex of EXAMPLE XXV
The above ingredients are ball milled at 90F. for 18 hours to form a hybrid toner concentrate. When used at a concentration of 5 gs./2000 1~9;~6 mls. Isopar G in a Savin 220 Copier, dense black prints are obtained free from background.
. EXAMPLE XLIX
25 gs. Staybelite 80 gs. Latex of EXAMPLE XXXIX
12 gs. Toner 8100 3 gs. Spirit Nigrosine SSB
6 gs. Raven 11 1 g. Aluminum stearate ~20 gs. Alkanol DOA
50 gs. Isopar G
The above ormula is ball milled for ~0 hours at amb:ient tempera-ture to form a hybrld toner concentrate. When us0d in a Scott 3D Copier at a concenkration of ~ gs./2000 mls. Isopar G, dense black background-free prints a-re obtained.
EXAMPLE L
25 gs. Staybelite 6 gs. Latex of EXAMPLE XXXIX
12 gs. Toner 8100 3 gs. Spirit Nigrosine SSB
6 gs. Raven 11 2 gs. Aluminum stearate 20 gs. Alkanol DOA
50 gs. Isopar G
The above formula îs ball milled for 40 hours at ambient tempera-ture to fo~m a hybrid toner concentrate. ~hen used in a Savin 200 Copier at a concentration of 6 gs./2000 mls. Isopar G dense black background-free prints are obtained.
EXAMPLE LI

25 gs. Staybelite 1(?89276 80 gs. Latex of EXAMPLE XX dyed with Victoria Blue BA Base, 4% by weight 8 gs. Toner 8100 2 gs. Spirit Nigrosine SSB
4 gs. Statex B-12 10 gs. Alkanol DOA
10 gs. Polymerized castor oil The above ingredients are ball milled at 98F. for 39 hours. The output is cut with a mixture of:
0.75 g. Aluminum stearate - 10 10 gs. Polymerized castor oil 50 gs. Isopar K
and ball milled for an additional hour to form a hybrid toner concentrate.
When used at a concentration of 3 gs./2000 mls. Isopar K ln a Dennison Mark I
Book Copler, dense black background free prints are obtained.
EXAMPLE LII
950 gs. Latex of EXAMPLE XX dyed with Victoria Blue BA Base, 4% by weight 20 gs. Staybelite 8 gs. Toner 8100 2 gs. Spirit Nigrosine SSB
~ gs. Raven 11 8 gs. Alkanol DOA
8 gs. Polymerized castor oil The above ingredients are ball milled at 100F. for 40 hours.
~hen used at a concentration of 25 gs./2000 mls. Isopar G with the addition of 10 drops of a 1% solution by weight in Isopar G of the aluminum salt of 3, 5 diisoprop~lsalicylic acid, in a Toshibafax BD-32 Copier, excellent litho-graphic masters are produced.
~ith the use of the novel hybrid toner three unusual effects have been observed in connection with the preparation of developed images which are to be used as lithographic masters after etching.

The first of these concerns the "fill" which is the uniformity of electrostatographic deposit over a solid colored area in such a propoTtion that it is a reasonable facsimile of the original image densitywise. It will be recalled that, using the first liquid toner alone, the fill inwardly of the peripher~ of a colored zone of reasonably large size was poor. However, when even small amounts, e.g. as low as 1/2%, of the constituents of the second liquid toner are present in the hybrid liquid toner the fill is sharply better-ed. The rate of improving the fill tapers off as larger amounts of the con-Stituents of the second liquid toner are employed, and if this were the sole desideratum, it would be desirable not to include predominant amounts or even large amounts of the second liquid toner or its constituents in the hybrid liquid toner for economical reasons solely, inasmuch as the cost of the amphi-path:ic molecule cxceeds the cost of the fixer and dispersant of the first liquid toner. ~lowevor, there are other considerations which will be mentioned below which govern the ratio of the constituents of the two liquid toner in the hybrid toner and it is observed that the use of larger amounts of the constituents of the second liquid toner in the hybrid toner do not lessen the effect of improvement in fill. ~leretofore it has been proposed to use various types of mechanical approaches to the solution of this problem such, for in-stance, as the addition of development electrodes submerged in the bath and adjacent the path of travel of the immersed sheet carrier, but the results obtained thereby were largely unsatisfactory, and the fact that such small amounts of a second liquid toner in the hybrid toner so easily provides the desired fill was entirely unexpected. There is no explanation for such pheno-menon, that is to say, the in1uence of the amphipathic polymeric molecule on the density of deposit of the pigment particles of the first liquid toner on an electrostatic latent image.
Another important improvement resulting from the combination of the two toners and, specifically, the addition of the constituents of the second liquid toner to the first liquid toner, is the lengthening of the life lQ~39Z76 of the developed image when employed as a lithographic master. It has been found that, despite the short life of lithographic masters prepared with the first type of liquid toner, the life of a lithographic master prepared with the hybrid toner is ver~ substantially greater and, indeed, at least as great as the life of the lithographic master prepared solely with the second liquid toner; in other words, the mixing together of the two liquid toners for the purpose of increasing fill does not degrade the life of the lithographic master prepared with the hybrid toner below the life of the lithographic master pre-pared with the second liquid toner alone so that by this invention, both the fill and the length of life of a lithographic master can be bettered. In order to secure usable results insofar as the length of the life of a lithographic master is concerned, it is desirable to employ not less than about 1 part of the constituents of the second liquid toner to about 20 parts of the constit-uents of the first liquid toner. In connection with the Eoregoing it will be appreciated that these proportions ma~ be adjusted depending upon the length of life desired and the cost factors involved; that is to say, if it is known that for a particular use a less than ver~ lengthy life is required of a litho-graphic master, it would be a needless extravagance to use more of the constituents of the second liquid toner than will produce such an extended life.
An additional advantage observed by employing the constituents of both the irst and the secondliquid toners in a hybrid toner either Eor use in proparing a lithographic master or Eor general office copying purposes is that the presence o even small amounts of the constituents of the first liquid toner ver~ substantiall~ increases the edge contrast of a developed image, in other words, the sharpness or snappiness of the developed image. Such improve-ment in edge contrast is noticeable with even amounts as small as 1/2% of the constituents of the first liquid toner in the hybrid toner. ~owever, again, the matter of economical considerations usually will preclude the employment of very large amounts of the constituents of the second liquid toner. Never-theless, this increase in sharpness is not destroyed by using larger amounts of the constituents of the first liquid toner in the hybrid toner.
A further advantage has been observed which results rom the pre-sence of even small amounts of the constituents of the second liquid toner in the hybrid toner, this relating to the resistance of the deposited image to the etching solvent. It is characteristic of images deposited through employ-ment of the irst liquid toner that unless the original is extremely even in density the etch tends to attack lighter portions of the image and this results in portions of the image becoming less oleophilic than other portions so that the copies prepared with the lithographic master experience loss of quality in comparison with the original. But the addition of even very small amounts of the constituents of the second liquid toner overcomes this drawback and it will be obsorved that the developed :images prepared wlth the hybrld toner have a substantial uniformity of resistance to transformation by the etching solution from the oleophilic state to the hydrophilic state. This effect is not de-creased by the presence of larger amounts of the constituents of the second liquid toner in the hy~rid toner.
The second special increased utility ensuing from the use of the hybrid toner concerns the electrostatographic preparation of microficheimages.
Heretofore there has been no widely commercially acceptable toner for electro-statographic creation of microfiche images. When the first liquid toner was employed it was subject to the aforementioned difficulty that the fixer had to be raised to such elevated temperature during fusing that it rendered the transparent thermoplastic carrier for the transparent photoconductor dimension-ally unstable. This resulted in the running together or blurring of adjacent supposedly spaced portions of the reproduced image with such a high loss of resolution that such image had no commercial value. On the other hand, where the second liquid toner was employed the edges of image portions were not faithful reproductions of the corresponding edges of the original so that here, too, there was a tendency to lose resolution due to a wavering of the edges of 1¢~9Z76 the reproduction that was not present in the original. One other toner had been proposed for electrostatic creation of microfiche images, which toner required several minutes or setting after development. In the interim pre-ceding hardening of the image, the toner could not be touched and this was an impractical approach under modern-day labor conditions and particularly where high speed reproductions were involved. All of these defects have been over-come when ~he first and second liquid toners are conjointly used in a hybrid toner. For an unexplainable reason or reasons the presence of the constituents of the first liquid toner has been found to cause the edge portions of the developed image to be faithful facsimiles of the edge portions of the original, this being true where even the minimal amounts above mentioned of the first liquid toner are employed. Conversely, the presence of even the minimal amounts o~ the second liquid toner have been found to enable the image to be ~ixed quickly and firmly at temperatures below those necessary ~or ~ixing the first liquicl toner and below that which will render the thermoplastic trans-parent carrier for an organic transparent photoconductor dimensionally un-stable. It is known whether this decrease in setting temperature is due to a lower fusing point for the fixative moiety of the amphipathic molecule or to the ability of the amphipathic molecule to form a solvent-induced bond with the aforesaid thermoplastic carrier, or for some other reason not known, but, be that as it may, the physical result is present and for the first time enables a microfiche image to be created speedily and at a low enough tempera-ture not to affect resolution so that the resolution capability of the final electrostatographically produced image will be a function solely of the resolution obtainable with the original at the optical reduction ratio employ-ed and will in no wise be deleteriously affected by the reproduction process.
Itthus will be seen that there is provided a system which achieves the various objects of the invention and which is well adapted to meet the conditions of practical use.
As various possible embodiments might be made of the above inven-~ 9Z76 tion, and as various changes might be made in the embodiments above set forth, it is to be understood that all matter herein described is to be interpreted as illustrative and not in a limiting sense.

Claims (17)

THE EMBODIMENTS OF THE INVENTION IN WHICH AN EXCLUSIVE
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:

1. A liquid electrostatographic toner consisting essentially of a combination of:
(A) a first liquid toner including (i) a solvent system having an evaporation rato at least as fast as that of kerosene, but slower than that of hexane, and a Kauri-butanol number less than 35, is substantially aromatic-liquid-free, has an electrical resistivity of at least about 109 ohm centimeters, a dielectric constant of less than three and one half and a Tagliabue closed cup flash point of at least l00°F, is non toxic and non-polar, has no objectionable odor, and has a viscosity of between 0.5 and 2.5 centipoises at room temperature, (ii) a solid synthetic thermoplastic fixer dissolved in the solvent system and (iii) a dispersant;
(B) a second liquid toner including (i) a solvent system compatible with the first liquid toner and which has an evaporation rate at least as fast as that of kerosene, but slower than that of hexane, and a Kauri-butanol number less than 35, is substantially aromatic-liquid-free, has an electrical resisti-vity of at least about 109 ohm centimeters, a dielectric constant of less than three and one half and a Tagliabue closed cup flash point of at least 100°F, is non-toxic and non-polar, has no objectionable odor, and has a viscosity of between 0.5 and 2.5 centipoises at room temperature, (ii) an amphipathic polymeric molecule of the graft type having a polymeric backbone part and a polymeric graft part on said backbone part, said molecule being composed of two polymeric moieties of which at least one is thermoplastic, said first polymeric moiety, which is one of said parts, being solvated by said systems, a portion of said first polymeric moiety being a fixative and a dispersant, and a second polymeric moiety, which is the other of said parts, being insoluble in said systems, said second polymeric moiety having a particle size between 25mµ and 25µ, a portion of said second polymeric moiety being a fixative, so that there is provided a continuous phase constituting the solvent systems with the first polymeric moiety dissolved therein and a dispersed phase constituting the non-solvated polymeric moiety whereby said molecule acts as a mono-dispersed par-ticle phase, a fixative and a dispersant;
(C) the first liquid toner being present in an amount of from 0.5% to 99.5%, the balance of the liquid electrostatographic toner being the second liquid toner; and (D) at least one of said liquid toners including a charge director.

2. A liquid electrostatographic toner as claimed in claim 1 wherein the second liquid toner further includes a color agent.

3. A liquid electrostatographic toner as claimed in claim 2 wherein the color agent is a moiety of the amphipathic molecule.

4. A liquid electrostatographic toner as claimed in claim 2 wherein the color agent is a compound other than the amphipathic molecule.

5. A liquid electrostatographic toner as claimed in claim 1 wherein the amphipathic molecule includes a solvated polymeric moiety selected from the group consisting of: crepe rubber; refined linseed oil; degraded rubber; alkyd resins; polyisobutylene; polybutadiene; polyisoprene, polyisobornyl methacry-late; homopolymeric vinyl esters of long chain fatty acids; homopolymeric vinyl alkyl ethers; homopolymers of the C4-C22 alkyl esters of acrylic and methacrylic acid in a molecular weight range of about 103 to about 106; copolymers of the aforesaid C4-C22 alkyl esters with one another; coplymers of the aforesaid C4-C22 alkyl esters with one another and with methyl, ethyl, isopropyl and propyl esters of acrylic and methacrylic acids; copolymers of the C4-C22 alkyl esters of acrylic and methacrylic acids with monomers containing acry-lic acid, methacrylic acid, crotonic acid, maleic acid, atropic acid, fumaric acid, itaconic acid, citraconic acid, acrylic anhydride, methacrylic anhydride, maleic anhydride, acryloyl chloride, methacryloyl chloride, acrylonitrile methacrylonitrile, N-vinyl pyrrolidone, acrylamide and derivatives thereof, methacrylamide and derivatives thereof, hydroxyethyl methacrylate, hydroxy-ethyl acrylate, hydroxypropyl methacrylate, hydroxypropyl acrylate, dimethyl-aminomethyl methacrylate, dimethylaminomethyl acrylate, dimethylaminoethyl, methacrylate, dimethylaminoethyl acrylate, diethylaminomethyl methacrylate, diethylaminomethyl acrylate, diethylaminoethyl methacrylate, diethylaminoethyl acrylate, t-butylaminoethyl methacrylate, t-butylaminoethyl acrylate, cyclo-hexyl acrylate, allyl alcohol and derivatives thereof, cinnamic acid and deri-vatives thereof, styrene and derivatives thereof, butadiene, methallyl alcohol and derivatives thereof, propargyl alcohol and derivatives thereof, indene and derivatives thereof, norbornene and derivatives thereof, vinyl ethers, vinyl esters, vinyl derivatives other than vinyl ethers and vinyl esters, glycidyl methacrylate and acrylate, mono- and dimethyl maleate, mono- and diethyl maleate, mono-n-butyl maleate, mono-sec-butyl maleate, mono-ter-butyl maleate, monobenzyl maleate, mono-2-ethylhexyl maleate, mono-n-octyl maleate, mono- and dimethyl fumarate and mono- and diethyl fumarate; copolymers of butadiene, isoprene and isobutylene with C4-C22 alkyl esters of acrylic and methacrylic acids; polycarbonates; polyamides; polyurethanes and epoxies, and the non-solvated polymeric moiety comprises homopolymers and copolymers formed from monomers selected from the group consisting of vinyl acetate, vinyl chloride, methyl acrylate, methyl methacrylate, ethyl acrylate, ethyl methacrylate, propyl acrylate, propyl methacrylate, isopropyl acrylate, isopropyl methacry-late, hydroxy ethyl acrylate, hydroxy ethyl methacrylate, hydroxy propyl acry-late, hydroxy propyl methacrylate, acrylonitrile, methacrylonitrile, acrylamide, methacrylamide, acrylic acid, acrylic anhydride, methacrylie acid, methacrylic anhydride, mono methyl maleate, mono ethyl maleate, mono-n-butyl maleate, mono-sec-butyl maleate, mono-ter-butyl maleate, mono-2-ethylhexyl maleate, mono-n-octyl maleate, mono methyl fumarate, mono-ethyl fumarate, styrene, vinyl toluene, maleic acid, maleic anhydride, crotonic acid, crotonic anhydride, fumaric acid, atropic acid, allylamine, vinyl amine, allyl alcohol, vinyl pyridines and derivatives thereof, glycidyl acrylate, glycidyl methacrylate, dialkylaminoalkyl methacrylate, dialkylaminoalkyl acrylate, methacrylyl ace-tone, N-hydroxymethyl methacrylamides, alkoxymethyl methacrylamides, acryloyl chloride, methacryloyl chloride, vinyl isocyanate, cyanomethylacrylate, vinyl .beta.-chloro-ethylsulphone, vinyl sulphonic acid, monobenzyl maleate and vinyl phosphoric acid.

6. A liquid electrostatographic toner as claimed in claim 1 wherein the amphipathic molecule includes a backbone chain of comonomers and attached chains having attached sites of a precursor monomer derived from monomers selected from the affiliated monomer groups set forth below:

Attached site precursor monomer (one or more non-mutually react-ive radicals to be selected from Comonomer of backbone chain each group}
Acrylic acid Methacrylie acid Glycidyl methacrylate or acrylate Maleic acid Fumaric acid Atropic acid Allylamine Vinyl amine Hydroxylethyl methacrylate and acrylate Hydroxypropyl methacrylate and acrylate Acryloyl or methacryloyl Acrylamide chloride Methacrylamide Allyl alcohol Allylamine Vinyl amine Attached site precursor monomer (one or more non-mutually react-ive radicals to be selected from Comonomer of backbone chain each group) Acrylic acid Vinyl pyridines Methacrylic acid Glycidyl methacrylates Maleic acid Vinylamine Crotonic acid Allylamine Alkyl hydrogen maleates Dialkylaminoalkyl methacrylates Alkyl hydrogen fumarates and acrylates Allylamine Vinyl isocyanate Vinyl amine Methacrylyl acetone Cyanomethylacrylate Vinyl amine Allylamine Allylamine Vinyl .beta.-chloroethylsulphone Vinyl amine Allyl alcohol Hydroxyalkyl methacrylates Glycidyl methacrylate Methacrylic anhydride Vinyl amine Acrylic anhydride Allylamine Maleic anhydride Hydroxyalkyl methacrylates Allyl alcohol Vinyl sulphonic acid N-hydroxymethyl methacrylamidesVinyl phosphoric acid Alkoxymethyl methacrylamides.

7. A liquid electrostatographic toner as set forth in claim 1 wherein the charge director is selected from the group consisting of: di-2-ethyl-hexyl sodium sulfosuccinate; di-tridecyl sodium sulfosuccinate; aluminum, chromium, zinc and calcium salts of 3,5-dialkylsalicylic acid, wherein the alkyl group is propyl, isopropyl, butyl, isobutyl, tertiary butyl, amyl, iso-amyl and other alkyl groups up to C-18; aluminum, chromium, zinc and calcium salts of dialkyl gamma-resorcylic acid, wherein the alkyl is as above; iso-propylamine salt of dodecylbenzene sulfonic acid; aluminum, vanadium and tin dresinates; cobalt, iron, lithium, tin and manganese octoates; a partially imidized polyamine with lubricating-oil soluble polyisobutylene chains and free secondary amines, gravity at 60°F. API 22.9, specific 0.92, flash point by the Cleveland open cup method, 425°F , viscosity at 210°F., 400 SSU, color (ASTM D-1500) L55D, nitrogen percentage by weight 2.0, and alkalinity value, (SM-205-15) 43; soya bean lecithin; aluminum salt of 50-50 by weight mixture of the mono- and di-2 ethylhexyl esters of phosphoric acid; zinc, lead, cop-per, cadmium, calcium, aluminum and iron stearates; zinc and aluminum palmi-tates; aluminum oleate; copper, manganese, cobalt and lead linoleates; manga-nese linoresinate; and l-[2-hydroxyethyl]-2-[mixed pentadecyl and heptadecyl]-2-imidazoline.

8. A liquid electrostatographic toner as set forth in claim 1 wherein the solid synthetic thermoplastic fixer is selected from the group consisting of: polymerized and hydrogenated thermoplastic acidic wood rosin, glycerol ester of modified wood rosin, pentaerythritol ester of wood rosin, pentaery-thritol ester of polymerized wood rosin, modified pentaerythritol ester of wood rosin, pentaerythritol ester of hydrogenated wood rosin, pentaerythritol ester of dimeric resin acids, modified pentaerythritol ester of wood rosin, glycerol ester of polymerized wood rosin, a thermoplastic petroleum hydrocar-bon resin in which the units of the polymer are predominantly selected from the group consisting of aromatic and cyclic units, having an acid number of less than l and a softening point of l00°C by the ring and ball method, fully hydrogenated glycerol ester of wood rosin, internally plasticized pentaery-thritol ester of wood rosin, dimeric resin acids, a vinyl toluene/acrylate copolymer, and a vinyl toluene/n-butyl methacrylate/stearyl methacrylate polymer.

9 In a method of creating an image, the improvement comprising:
applying under electrostatic control to a substrate so as to selectively de-posit a coating thereon, a liquid electrostatographic toner essentially com-prising a combination of:
(A) a first liquid toner including (i) a solvent system having an evaporation rate at least as fast as that of kerosene, but slower than that of hexane, and a Kauributanol number less than 35, is substantially aromatic-liquid-free, has an electrical resistivity of at least 109 ohm centimeters, a dielectric constant of less than three and one half and a Tagliabue closed cup flash point of at least 100°F, is non-toxic and non-polar, has no objectionable odor, and has a viscosity of between 0.5 and 2.5 centipoises at room temperature, (ii) a solid synthetic thermoplastic fixer fully soluble in the solvent system and (iii) a dispersant;
(B) a second liquid toner including (i) a solvent sysstem compatible with the first liquid toner and which has an evaporation rate at least as fast as that of kerosene, but slower than that of hexane, and a Kauri-butanol number less than 35, is substantially aromatic-liquid-free, has an electrical resistivity of at least about 109 ohm centimetes, a dielectric constant of less than three and one half and a Tagliabue closed cup flash point of at least 100°F, is non-toxic and non-polar, has no objectionable odor, and has a viscosity of between 0.5 and 2.5 centipoises at room temperature, (ii) an amphipathic polymeric molecule of the graft type having a polymeric backbone part and a polymeric graft part on said back-bone part, said molecule being composed of two moieties of which at least one is thermoplastic, said first moiety, which is one of said parts, being solvated by said systems, a portion of said first moiety being a fixative and a dispersant, and a second moiety, which is the other of said parts, being insoluble in said systems, said second moiety having a particle size between 25 mµ and 25µ, a portion of said second moiety being a fixative, so that there is provided a continuous phase constituting the solvent systems with the first moiety dissolved therein and a dispersed phase constitut-ing the non-solvated moiety whereby said molecule acts as a mono-dispersed particle phase, a fixative and a dispersant;
(C) the first liquid toner being present in an amount of from 0.5% to 99.5%, the balance of the liquid electrostatographic toner being the second liquid toner; and (D) at least one of said liquid toners including a charge director.

10. In a method of creating an image, the improvement comprising:
applying on a substrate an electrostatic charge in the configuration of an electrostatic latent image and thereafter applying to said substrate over the area of said latent image to selectively deposit a coating thereon a liquid electrostatographic toner essentially comprising a combination of:
(A) a first liquid toner including (i) a solvent system having an evaporation rate at least as fast as that of kerosene, but slower than that of hexane, and a Kauri-butanol number less than 35, is substantially aromatic-liquid-free, has an electrical resistivity of at least 109 ohm centimeters, a dielectric constant of less than three and one half and a Tagliabue closed cup flash point of at least 100°F, is non-toxic and non-polar, has no objectionable odor, and has a viscosity of between 0.5 and 2.5 centipoises at room temperature, (ii) a solid synthetic thermoplastic fixer fully soluble in the solvent system and (iii) a dispersant;
(B) a second liquid toner including (i) a solvent system compatible with the first liquid toner and which has an evaporation rate at least as fast as that of kerosene, but slower than that of hexane, and a Kauri-butanol number less than 35, is substantially aromatic-liquid-free, has an electrical resistivity of at least about 109 ohm centimeters, a dielectric constant of less than three and one half and a Tagliabue closed cup flash point of at least 100°F, is non-toxic and non-polar, has no objectionable odor, and has a viscosity of between 0.5 and 2.5 centipoises at room temperature, (ii) an amphipathic polymeric molecule of the graft type having a polymeric backbone part and a polymeric graft part on said backbone part, said molecule being composed of two moieties of which at least one is thermoplastic, said first moeity, which is one of said parts being solvated by said systems, a portion of said first moiety being a fixative and a dispersant, and a second moiety, which is the other of said parts, being insoluble in said systems, said second moiety having a particle size between 25 mµ
and 25 µ, a portion of said second moiety being a fixative, so that there is provided a continuous phase constituting the sol-vent systems with the first moiety dissolved therein and a dispers-ed phase constituting the non-solvated moiety whereby said mole-cule acts as a mono-dispersed particle phase, a fixative and a dispersant;
(C) the first liquid toner being present in an amount of from 0.5%
to 99.5%, the balance of the liquid electrostatographic toner being the second liquid toner; and (D) at least one of the said liquid toners including a charge direc-tor.

11. A method as set forth in claim 10 wherein the second liquid toner further includes a color agent.

12. A method as set forth in claim 11 wherein the color agent is a moiety of the amphipathic molecule.

13. A method as set forth in claim 12 wherein the color agent is a compound other than the amphipathic molecule.

14. A method as set forth in claim 10 wherein the amphipathic molecule includes a solvated moiety selected from the group consisting of: crepe rubber; refined linseed oil, degraded rubber; alkyd resins, polyisobutylene;
polybutadiene; polyisoprene, polyisobornyl methacrylate; homopolymeric vinyl esters of long chain fatty acids; homopolymeric vinyl alkyl ethers; homopoly-mers of the C4-C22 alkyl esters of acrylic and methacrylic acid in a molecu-lar weight range of about 103 to about 106; copolymers of the aforesaid C4-C22 alkyl esters with one another; copolymers of the aforesaid C4-C22 alkyl esters with one another and with methyl, ethyl, isopropyl and propyl esters of acry-lic and methacrylic acids; copolymers of the C4-C22 alkyl esters of acrylic and methacrylic acids with monomers containing acrylic acid, methacrylic acid, crotonic acid, maleic acid, atropic acid, fumaric acid, itaconic acid, citra-conic acid, acrylic anhydride, methacrylic anhydride, maleic anhydride, acry-loyl chloride, methacryloyl chloride, acrylonitrile, methacrylonitrile, N-vinyl pyrrolidone, acrylamide and derivatives thereof, methacrylamide and de-rivatives thereof, hydroxyethyl methacrylate, hydroxyethyl acrylate, hydroxy-propyl methacrylute, hydroxypropyl acrylate, dimethylaminomethyl methacrylate, dimethylaminomethyl acrylate, dimethylaminoethyl methacrylate, dimethylamino-ethyl acrylate, diethylaminomethyl methacrylate, diethylaminomethyl acrylate, diethylaminoethyl methacrylate, diethylaminoethyl acrylate, t-butylaminoethyl methacrylate, t-butylaminoethyl acrylate, cyclohexyl acrylate, allyl alcohol and derivatives thereof, cinnamic acid and derivatives thereof, styrene and derivatives thereof, butadiene, methallyl alcohol and derivatives thereof, propargyl alcohol and derivatives thereof, indene and derivatives thereof, norbornene and derivatives thereof, vinyl ethers, vinyl esters, vinyl deriva-tives other than vinyl ethers and vinyl esters, glycidyl methacrylate and acrylate, mono- and dimethyl maleate, mono- and diethyl maleate, mono-n-butyl maleate, mono-sec-butyl maleate, mono-ter-butyl maleate, monobenzyl maleate, mono-2-ethylhexyl maleate, mono-n-octyl maleate, mono- and dimethyl fumarate and mono- and diethyl fumarate; copolymers of butadiene, isoprene and isobuty-lene with C4-C22 alkyl esters of acrylic and methacrylic acids; polycarbonates poly-amides, polyurethanes and epoxies, and the non-solvated moiety comprises homopolymers and copolymers formed from monomers selected from the group con-sisting of vinyl acetate, vinyl chloride, methyl acrylate, methyl methacry-late, ethyl acrylate, ethyl methacrylate, propyl acrylate, propyl methacry-late, isopropyl acrylate, isopropyl methacrylate, hydroxy ethyl acrylate, hydroxy ethyl methacrylate, hydroxy propyl acrylate, hydroxy propyl methacry-late, acrylonitrile, methacrylonitrile, acrylamide, methacrylamide, acrylic acid, acrylic anhydride, methacrylic acid, methacrylic anhydride, mono methyl maleate, mono ethyl maleate, mono-n-butyl maleate, mono-sec-butyl maleate, mono-ter-butyl maleate, mono-e-ethylhexyl maleate, mono-n-octyl maleate, mono ethyl fumarate, mono-ethyl fumarate, styrene, vinyl toluene, maleic acid, maleic anhydride, crotonic acid, crotonic anhydride, fumaric acid, atropic acid, allylamine, vinyl amine, allyl alcohol, vinyl pyridines and derivatives thereof, glycidyl acrylate, glycidyl methacrylate, dialkylaminoalkyl metha-crylate, dialkylaminoalkyl acrylate, methacrylyl acotone, N-hydroxymethyl methacrylamides, alkoxymethyl methacrylamides, acryloyl chloride, methacry-loyl chloride, vinyl isocyanate, cyanomethylacrylate, vinyl .beta.-chloroethylsul-phone, vinyl sulphonic acid, monobenzyl maleate and vinyl phosphoric acid.

15. A method as set forth in claim 10 wherein the amphipathic molecule includes a backbone chain of comonomers and attached chains having attached sites of a precursor monomer derived from monomers selected from the affili-ated monomer groups set forth below.

Attached site precursor monomer (one or more non-mutually react-ive radicals to be selected from Comonomer of backbone chain each group) Glycidyl methacrylate or Acrylic acid acrylate Methacrylic acid Maleic acid Fumaric acid Atropic acid Allylamine Vinyl amine Attached site precursor monomer (one or more non-mutually react-ive radicals to be selected from Comonomer of backbone chain each group) Hydroxylethyl methacrylate and acrylate Hydroxypropyl methacrylate and acrylate Acryloyl or methacryloyl Acrylamide chloride Methacrylamide Allyl alcohol Allylamine Vinyl amine Acrylic acid Vinyl pyridines Methacrylic acid Glycidyl methacrylate Maleic acid Vinylamine Crotonic acid Allylamine Alkyl hydrogen maleates Dialkylaminoalkyl methacrylates Alkyl hydrogen fumarates and acrylates Allylamine Vinyl isocyanate Vinylamine Methacrylyl acetone Cyanomethylacrylate Vinylamine Allylamine Allylamine Vinyl .beta.-chloroethylsulphone Vinylamine Allyl alcohol Hydroxyalkyl methacrylates Glycidyl methacrylate Methacrylic anhydride Vinylamine Acrylic anhydride Allylamine Maleic anhydride Hydroxyalkyl methacrylates Allyl alcohol Vinyl sulphonic acid N-hydroxymethyl methacrylamides Vinyl phosphoric acid Alkoxymethyl methacrylamides

16. A method as set forth in claim 10 wherein khe charge director is selected from the group consisting of: di-2-ethylhexyl sodium sulfosuccin-ate; di-tridecyl sodium sulfosuccinate; aluminum, chromium, zinc and calcium salts of 3,5-dialkylsalicylic acid, wherein the alkyl group is propyl, iso-propyl, butyl, isobutyl, tertiary butyl, amyl, isoamyl and other alkyl groups up to C-18; aluminum, chromium, zinc and calcium salts of dialkyl gamma-resorcylic acid, wherein the alkyl is as above; isopropylamine salt of dodecylbenzene sulfonic acid; aluminum, vanadium and tin dresinates; cobalt, iron, lithium, tin and manganese octoates; partially imidized polyamine with lubricating-oil soluble polyisobutylene chains and free secondary amines, gravity at 60°F. API 22.9, specific 0.92, flash point by the Cleveland open cup method, 425°F., viscosity at 210°F., 400 SSU, color (ASTM
D-1500) L55D, nitrogen percentage by weight 2.0, and alkalinity value, (SM-205-15) 43; soya bean lecithin; aluminum salt of 50-50 by weight mixture of the mono-and di-2 ethylhexyl esters of phosphoric acid; zinc, lead, copper, cadmium, calcium, aluminum and iron stearates; zinc and aluminum palmitates;
aluminum oleate; copper, manganese, cobalt and lead linoleates; manganese linoresinate; and 1-(2-hydroxyethy) -2-(mixed pentadecyl and heptadecy)-2-imidazoline.

17. A method as set forth in claim 10 wherein the solid synthetic ther-moplastic fixer is selected from the group consisting of: polymerized and hydrogenated thermoplastic acidic wood rosin, glycerol ester of modified wood rosin, pentaerythritol ester of wood rosin, pentaerythritol ester of polymerized wood rosin, glycerol ester of polymerized wood rosin, a thermo-plastic petroleum hydrocarbon resin in which the units of the polymer are predominantly selected from the group consisting of aromatic and cyclic units, having an acid number of less than 1 and a softening point of 100°C by the ring and ball method, fully hydrogenated glycerol ester of wood rosin, inter-nally plasticized pentaerythritol ester of wood rosin, dimeric resin acids, a vinyl toluene/acrylate copolymer, and a vinyl toluene/n-butyl methacrylate/
stearyl methacrylate polymer.