DE2611487A1 - TREATMENT OF IRON POWDER WITH PERFLUORINE COMPOUNDS - Google Patents

Description

Patent attorneys

DIpL-ir ;. Ζί'ΓίΓΓ.ίΊΏαηη
Dipi.-to3. v. VVr -., Rsrsky

8 Munich -, Rossntal 7
Tel. 2603989

March 18, 1976

FI ^ iL) T-307 / US, IaC. Stamford, Connecticut C6904 USa

Be h a η dlung_ vo η ^ i se η jj ul ve r_mi t _P e rji'l uo r ve rb i η du nge η

They aanehnendfe use, "of ^ .infa has brought with it that developer _{powder in the 7th 6 is} enjoying increasing popularity nowadays with liquid toners In the case of the developer powders used for the Ivlagnet Brush Units, an iron powder is usually used as the carrier material. Cheap, untreated iron powders cannot be used in Tlagnet Brush Systems because this hit does not have sufficient rust resistance and because its color and the properties of its triboelectric charge are adversely affected by deviating humidity conditions.

rB ± -eii according to the state of the art known developers, which see in r-utcr.:?.ti copy τϊλζ ·. machines find use, immerse «θ _en der mechanical Reibun-v e'er ^m r; -. ^: £; e robb rf 1 Genuine nit d ^ n soft 'V. non-resinous rrüblarne der Trä ^ erfil "!" Formation on. The gradual accumulation of its permanently adhering ulm affects the normal t-riboelectrics. Charging of the toner particles in the toner attachment. As a result, the toner is then either less strongly charged or, alternatively, charged in the opposite direction, which results in a lower copy with a high degree of brightness brings with it.

I /. The Jachliteratur can find Εχητ / ice in different ways Possibilities of plastic coating and electroplating of the Carrier material s to eliminate the problems of formation of film. Most the "known 3rd layering methods are expensive and also, in others see disadvantageous, "for example, in that this is unsuitable .; »Ierigeiisehaften triboelectric charging can result and thereby de:.: Wearer a very high electrical V / i conveyed the status will, v; as its effect as intvd. cklungselektro de demolition does u '.'- d results in poorly filled image areas.

UELs technique see elektrostatographi illumination ^ ve down based on the fact that ^r on the recording surface of a photoconductor; in electrostatic latent image generated Tdrd. The electrostatic image can then develop with the help of finely divided toner particles which adhere electrostatically to the surface of the carrier particles. The Tr & ^: distribute before η are preferably u: .i iron powder or spherical Si senteilchen.

It has now been shown that a simple treatment of iron powder for adsorption of a perfluor compound can be used With a fine solvent, a treated iron can be obtained that has good resistance to rust even at high relative humidity and in a mixture with the usual toners under all conditions has a constant triboelectric charge behavior, being the "dustiness of the sounder in a magnetic brush unit" very much is small and can be operated with a lower reverse bias in the development, which makes the machine work more reliable power.

By

BAD ORIGJNAL

Through the use of the Trc Particles lead to a better, own electrophotographic Procedure. In the lame way of this very own process rs v, ird one raits a latent electrostatic image .; Untwickl £ .rgei .: isch in Brought into contact, the carrier particles treated according to the invention contains.

With the η figure given as a single sheet of drawings it is a graphic representation of the effect of the Gshe.lt saute ils the perfluorocomponent ir. The solvent on the Charge weight ratio of the treated iron powder.

IIκ will now be described oil preferred embodiment forms. Any desired material which is able to react chemically with the ferfluorine compounds used in the context of the invention can be used as the core of the backing particles according to the invention. For example, the core material of the carrier particles can be sand / glass spheres, lethal spherical foils or metal powder. The terms "metallic" and "metallic" are to be understood here and in the claims to include both the metallic elements present in elemental form and their oxides, carbides and metallic compounds of other types and alloys which were present in solid form . ^ e η.

The core of the carrier particles is in the preferred embodiment a ferromagnetic fabric such as iron or steel. Also other suitable ferromagnetic substances such as magnetic ones Oxides and, for example, alloys of copper-Fickel-iron can be used. The size of the core can be between 40 and 1000 Keep microns, but the size range between 50 and 400 HLkrön the gate move given.

For the selection of the perfluorocompound there are substance classes into consideration such as perfluoroalkanes, perfluoroalkyl ethers, perfluoroalcohols , Perf luo rami ne, Perfluoramides, Perfluore ster, perfluoric acid η and the like

Perfluoroalkanes of the formula F. (CF _p ) · ΊΡ, in which η is 6 or greater than 6, can be used. Compounds of the type 1H-perfluoroalkane, HOF ₀ - (CF ₂ ) «CF, can also be used. Beisudele

9 ^ _{0/1010 BAD 0R (G (NAL} "

of substances of the first IZ class are perfluorhexane, perfluorheptane, P-.rfluoralks.n-70, Perfluoralkan-80, Perfluorelkan-115, Perfluoralkan-195 j P & rfluorkerson-L,? e rfluo rker so n-H etc. As examples of that IE-Pe rf luo ralkan are IH-perfluoroheptane, lH-Perfluorooctari etc. too to name.

The commercially available ones come as examples of perfluoroalkyl polyethers fluorinated oils into consideration.

Fluoroalcohols suitable for making the treatment are perfluoroalcohols of the formula

i '• (CF ₂ -CF ₂ ) _n - CH ₂ OH or H. (CF ₂ -CP ₂ ) _n • ^GE 2 ^0E

"..orin η = 1-7 _} so for example ΙΗ, ΙΗ-Peiitadecafluorooctanol-l, IK, IE, 9H-Hexaf luor-1 -nonanol ο <?. er IH, 1H, 11H-Eicasafluor-1 -undecanol. Also suitable are fluoroalcohols de s ü ^ ps F- (CF ") · (CH ₉ ) -CH ₀ OH, where rc is an integer from 2 to 10, for example about Gmega- αγ drope rf luo räthylcarbinol-1, Omega - Hydrope rfluo rbu tylcarbi no 1-1, Omega-hydrope rf luorde cyl carbinol-1 etc. and double-chain s Omegahy drope rfluo ro ctyl-2, roethyl -2-ethylenol, H (CF). CEOH- (CH ,) so / ie H. (CPg) ₄ -COH. (CH ₅ ) ₂ etc.

Fluoroamines suitable for undertaking the treatment are the primary, secondary and tertiary perfluoro rand ne, for example Perfluorotributylamine.

Fluoramides of the structural composition can also be used F «(CF») -COKHp, where η = 4-10, for example perfluoroc tanami d. Two-chain amides as well as amides with - CKp - Se que nze η are also suitable.

Partly fluorinated aliphatic diesters can also be used with a surface-active structure that either has the formula

(CH ₂ ) _x CHS [COOCH ₂ (CF ₂ ) _m F] ₂

where R can denote a hydrogen atom, a straight-chain alkyl C to C_ ₂ , a straight-chain alkenyl group C ₂ to C_ ₂ and a phenyl group and where m is an integer from 5 to .11 and χ is an integer from 1 to 7 is, or the formula

[C00CH ₂ (CF ₂ ) _m H] ₂

wherein

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.before E and χ have the abovementioned Be de u door ^ and m is a whole number from 4 to 10. In the Sture part of the diesters ^l "crn it, for example, st is a succinyl, glutaryl, adipyl, Pimelyl-, Suberyl-, Azelayl- or Sebacylre act further to an I '^ thyl-, n-propyl-n -butyl-, n-dodecyl-, n-octenyl- or r.- JXKtecer.ylsuccinylrest or a phenyl sue ei nylre st, um. a 5-Ivieth; / l-, 3-3utyl-, 3-dodecyl- or 3 -0ctenylglutarylre st, a 3-Phenylglutarylrest, a 4-Eethyl-, 4-Octyl- or 4-Phenyladipylre st, a 7-Ilsthyl- or 7-Xthyl azelaylrest, a 7-Phenylazelajlrest etc. The fluoroalcohol part the diester can be the residue of a perfluoroalcohol of the formula

where m is an integer from 5 to 11, or one partially fluorinated alcohol of the formula

where m is an integer from 4 "to 10. These include the stars e.g. 3is (perfluorooctyl) -n-dodecenyl succinate, bis (perfluorohexyl) -3-me ethyl glutarate, bis (perfluorooctyl) -3-methyl glutarate, Bis (hj droperfluoroheptyl) -3-methylglutarate and -3-phenylglutarate etc.

The fluoric acid compounds suitable for carrying out the treatment Findings are the perfluoroalkyl monocarboxylic acid η of the formula

P (OPg) _n COOH

where η is an integer from 1 to 13, for example trifluoroacetic acid, hepafluorobutter acid, perfluoro reap ri η acid, perfluoro-n-caprylic acid, etc., also two-chain perfluoroalkylmonocarboxylic acids of the formulas (CP,) g.CP (CPg) _n . COOH and (CPjg. (CP ₂ Cl) ^ CP. (CPg) _n .COOH

where η is an integer from 1 to 11, including 3-Ti "ifluoromethylperfluorobutyric acid , 3-difluorochloromethyl perfluorobutyric acid, 13-trifluoromethyl perfluoromyristic acid etc., also partially fluorinated monocarboxylic acids of the formula

P- (CPg) _n - (CHg) _n -COOH

where η is an integer from 1 to 10 and m is an integer from 2 to 16 are, for example, 4-trifluoromethylbutyric acid, 11 (heneicofluorodecyl) undecylic acid , 17 (pentadecafluoroheptyl) heptadecylic acid etc /. and partly

fluorinated

fluorinated Ho no carbon acid re η of the formula

.vorin η is an integer from 1 to 14, for example 2H-difluoro ssigsüure, 7H-Do de cafluo rö nan th acid, 11H-Ei co safluo round cylsL'ure etc.

The above classification of the i:.: Usable within the scope of the invention perfluorocompounds is not in a limiting sense To make sense of it. Other perfluorocompounds can also be used, ivii. like ketones. Aldehydes, nitriles and suIfo compounds.

The perfluoroalkanes and ethers protect the wearing robe apparently only temporarily. IiLe perfluoramines, -amides and -esters however, seem to give the wearer a fairly long life. The longest life can be achieved with the acids and alcoholic cr achieve.

The typical carrier material was a commercially available powder with a particle size corresponding to the B 3 rs i between the, lT £ i- ^c : t - .: idard seven x ± t £ 0 and with 23C meshes per row (ce .. C, 18 to G, 06 mi lichte!? I ^ bchen »v ^ ite) used. »Vurds also uses a commercially available iron powder with spherical particles.

In connection with the pe rfiuorbe acted η iron powder can work with commercially available toners. As not commercially available Töner was traded together with the pe rfiuorbe η iron one Mass used, in addition to 45.5 parts of a copolymer η styrene-buty 1 methacrylate nor 54 »5 parts of other commercially available chemicals contained that servants are not commercially available toners in the following as 3_.ezialtöner. The applied toner content is in that ! »Ntv.ückler mix between 1 and 3 percent, with the He stan part of the perfluorinated powder.

The perfluorine treatment of the carrier particles is carried out in dec: the Kexnmaterial about 30 to 45 minutes in a suitable Circulating solution containing one of the perfluorocompounds listed above. IT after the; The solution is decanted and agitated filtered and the core material is in a heating cabinet for example heated to dryness at 50-75 C ^ i s. The treated core material

+ namelyB; 45.5 parts Pliolite YTI (Goodyear Ohamicals ) , rial β parts Mogul-L (Ga / bot Corp.) and 3 parts Uigrosine base ITB (GAF Corp.)

809S40 / 1QIG

rial can then be used as a carrier part in a developer powder be used.

Suitable volatile solvents for the liquid batches according to the invention are the halogenated carbons such as liquid perfluoroalkanes and fully fluorinated bromo- and chloroalkanes, for example perfluoropentane, pe rfluorhexane, trichlorofluoromethane, dibromodifluoromethane, tribromofluoromethane, 1,1,2 -Trichlor-l, 2 , 2-trifluoroethane, 1,2-dibromo-l, 1 ·, 2.2- te met luo rä than, 1,1,1-trichloro-2,2,3,3,3- pentafluoropropane, 1,1,1,3-itetrachloro-2,2,3,3-tetrafluoropropane and 2,2,3-trichloro-1,1,1,3,4> 4j4 ~ l ^ie P "t ^a i ' l ^uo:!: 'T ^{:) U-} t ^ari ·, mixtures thereof as well as 1,1,2,2-! tetrachloro-1,2-difluoroethane, melting point 26 ⁰ G, in liquid form or in solution in one of the liquid perfluoroalkanes or the liquid fully fluorinated bromine or chloroalkanes.

Other solvers that can also be used are, among others _o Methyläthylke ton, acetone, white spirit, naphtha, etc.. Ls, it was found that these latter solver sultate to Srzielung be sserer Beschichtungsre can be mixed with less effort with the aforementioned halocarbon solvers.

A typical range of levels for the perfluorocompound content in the solver that is from 0.01 to 10 percent, with the range of 0.1 to 0.2 percent being preferred.

The following are commercially available perfluorinated compounds has been used successfully for the treatment of iron powders, which serve as inert materials: perfluorocerosene-L, IH, IH, 9H-hexadecafluoro-1-nonanol, lHjlH-pentadecafluoro-l-octanol, perfluoro reap ric acid , 11H-Ei casafluo round cylic acid, perfluoro-n-caprylic acid, perfluoro ο tanami d, Perfluo rtribu tylami η, IH, IH, 11H-Ii casafluor-1-unde canol and perfluoroesters, for example bis (2,4'rpentoxytetrafluoropropyl) -5-methylglutarate. The same also applies to commercially available perfluoro ralkyl ethers.

Preferably, the perfluorinated iron is treated with a Drivers mixed in the ratio of 98 to 2. It is here the weight ratio, as well as all other ratio and percentages are based on weight. To evaluate the developer powder

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• do you use the following tests?

Α. Faraday measurement: is carried out as a function of the perfluorine treatment and exposure to different Humidity conditions. A measured value of charge per unit of mass is obtained, which is an indication of the Effectiveness of treatment gives.

B. Step tablet measurements: this gives an indication the tint properties of the developer powder. Electric isolated spots 1 cm in diameter are recharged in increasing voltage steps of 10 T each. These Dots are applied to the developing with the help of a hand-held magnetic brush rpul ve rn developed to completion. The polka dots will after filling in the blackening density and after others visually perceptible properties are assessed.

C. Machine evaluation of the developer powder in a commercial practice before η plain paper copier device.

In Table 1, the Faraday He ssungen are listed. It turns out that the burnishing influences the triboelectric behavior of the iron surface, so that any desired specific charge can consequently be achieved by choosing the appropriate perfluorocompound. In the third column is the remaining Y / ert of the specific charge given after the developer for a period of three to four days at a temperature of 20 ⁰ C at a relative humidity of 75 percent were suspended. The last column shows the percentage decrease in the specific charge when the developer powder is exposed to high relative humidity.

Ideally, the specific charge should also be high relative humidity does not drop.

Tabel

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5 -

Tabel

link

see speci Charge "under room conditions,

pc / g

see speci

Charge after

3-4 days,

75> o relative charge

Moisture waste,

at 20 ° C,

untreated eggs washed with solvent Pe rf luo rke ro si η-L

trade sübli marriage

Perfluoroalkyl ethers

IH, 1H, 9H-hexad caf luoro-1-nonanol IH, IH-Pe nta de cafluo r-1-o ctanol Perfluo reap ric acid 11H-Ui ca saf luo round cylic acid Pe rf luo r- η - cap ryl acid pe rfluo ro c tanami d Perfluorotributylamine IH, IH, 11H-Ii ca saf luo r-1 -und canol

4.8 3.4 29.7 4.0 3.3 16.0 4.6 2.4 32.6 6.4 5.0 22.4 5.6 4.0 23 7.8 6.3 15.6 11.9 9.3 21.6 9.1 9.2 + 1.4 Load reversal r 10.9 9.5 12.8 5.0 4.0 19.4 7.8 6.5 19.5

The perfluorine content in the solution was consistent to 0.2 percent, apart from position 5? v / o er 0.05 percent fraud.

The graph illustrates the typical Effect of the perfluorocompound content on the specific Charge. This curve was obtained for iron powder made with HH-Si ca safluo round cylic acid had been treated.

It should be noted that the value of the specific charge initially increases rapidly, whereupon a flattening occurs until higher concentrations are reached at which the Yfert of the specific Charge then decreased again.

Execution example

09840/1010

Example 1

A Lien gene content of C.05 g of IIH-Kicasefluorunde cyl acid .vurde dissolved in a mixture of 20 ml of its commercially available trichloroheptafluorobutane and 10 ml of diethyl ethyl ketone. 30 g of a commercially available iron powder with a particle size corresponding to the range between the US standard sieves with 80 and 2JO meshes per inch (approx. 0.18 to 0.06 mm clear flap opening) were added to this solvent. The contents were mixed for half an hour and the supernatant was then decanted. The remaining treated iron powder was dried in a heating cabinet at 100 ° C. for two hours. The iron powder treated in this way was mixed with a commercially available toner A ^{in a ratio of 98 to 2.} The developing powder was used several times over a six-month period and was found to retain its excellent properties. When used to produce plain paper copies in a commercially available copier, good results have been obtained.

Embodiment 2

.iin Kengenanteil of 0.05 S-L perfluorokerosene was dissolved in a mixture of 20 nl Trichlorheptafluorbutan and IQ ml Iiethyläthylketon. 30 S of a commercially available iron powder with a particle size corresponding to the range between the US standard sieves with 80 and 230 mesh per inch were added to this dissolver. The contents were mixed for half an hour and the supernatant was then decanted. The remaining treated sisen powder was dried in a heating cabinet at 100 ° C. for two hours. The iron powder thus treated was in proportion before. 98 to 2 mixed with deiVi commercial A-type speakers.

Embodiment 3

A small part of 0.05 g of a commercially available perfluoroalkylene ether was in a mixture of 20 ml of trichloroheptafluorobutane and 10 nl IvIe thy la thy Ike ton solved. To this solver, 30 g de s commercial iron powder (particle size corresponding to a light

th mesh size of approx. 0.18 to 0.06 ram) was added. The content was mixed for half an hour and then the supernatant became decanted. The remaining treated iron powder was dried for two hours at 100 ° C. in a heating cabinet. Treated like that Bisenpulver was in the ratio of 98 to 2 with the commercial one Toner A mixed. The developer powder became over the course of a six month period Used several times for this period of time, and it was found that it retained its excellent properties. When used in good results have been obtained using a commercially available copier.

Implementation example 4

A proportion of 0.05 g of 1H, 1H, 9H-hexadecafluoro-1-nonanol was dissolved in 30 ml of a solvent mixture of 67 parts of a commercially available trichlorofluoromethane and 33 parts of methyl ethyl ketone. JO g of commercially available iron powder were added to this solution. The contents were mixed for half an hour and the supernatant was then decanted. The remaining treated iron powder was dried in a heating cabinet at 100 ° C. for two hours. The iron powder treated in this way is mixed with the commercially available toner A in a ratio of 98 to 2. The developer powder was used several times over a six-month period and was found to retain its excellent properties. Excellent plain paper copies were produced by a commercially available copier using this developer powder.

Example 5

A proportion of 0.05 g of perfluorocapric acid was used in 30 ml of a mixture of 67 parts of the commercially available trichlorofluoromethane and 33 parts of methyl ethyl ketone dissolved. To this solver 30 g of the commercially available iron powder with the particle size mentioned were obtained added. The contents were mixed for half an hour and the supernatant was then decanted. The remaining treated Iron powder was dried in a heating cabinet at 100 ° C. for two hours. The iron powder thus treated was in proportion - mixed from 98 to 2 with the commercially available A-type speaker. This ent- '

wi ekle rpul ve r

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v / ickle.rpulver was used several times over the course of a six month period used in a commercially available copier and provided good ee sul ta te.

Embodiment 6

A quantity of 0.05 g perfluorine-n-capric acid was dissolved in 30 ml of a mixture of 6 parts of the commercially available trichlorofluoromethane and 33 parts of methyl ethyl ketone. 30 g of commercial iron powder with the particle size mentioned were added to this solvent. The contents were mixed for half an hour and the supernatant was then decanted. The remaining treated iron powder was dried in a heating cabinet. The iron powder treated in this way was mixed in a ratio of 98 to 2 with the commercially available toner A, and the developing powder obtained in this way was tested. It had good properties.

Execution example 7

An Ilengenantsil tone 0 _? 05 g of perfluorooctanic acid was dissolved in a mixture of 67 parts of the commercially available trichlorofluoromethane and 33 parts of methyl ethyl ketone. 30 g of the commercially available iron powder with the particle size mentioned were added to this solvent. The contents were mixed for half an hour and the supernatant was then decanted. The remaining treated iron powder was dried in a heating cabinet at 100 ° C. for two hours. The iron powder treated in this way was mixed with the commercially available toner A in a ratio of 98 to 2. The developing powder was used several times over a six month period in a commercially available copier and gave good results.

Example 8

A proportion of 0.05 8 perfluorotributylamine was dissolved in a commercially available halocarbon. 30 g of the commercially available egg powder with the particle size mentioned were added to this solvent. The contents were mixed for half an hour, the supernatant was decanted and the remaining treated iron powder

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powder was dried. The iron powder thus treated was in proportion from 98 to 2 mixed with the commercially available A-driver. at the testing of the developer powder revealed good properties.

Embodiment 9

An amount of 0.05 S IHjlHjllH-Sicasafluor-l-undectnol was dissolved in 30 ml of the commercially available halocarbon. 100 g of the commercially available iron powder with the particle size range mentioned were added to this solvent. The contents were mixed and mixed for half an hour The supernatant was then decanted. The remaining treated iron powder was dried in a heating cabinet for two hours at 100 ° C. The iron powder treated in this way was ^{mixed in a ratio of 98 to} 2 with the commercially available toner A. The developer powder was repeatedly in the course of a six-month period in tested on a commercially available copier and gave good results, showing that it retained its excellent properties.

Execution in game 10

A proportion of 0.05 S 11H-Ei oasafluo round cylic acid was dissolved in a mixture of 20 ml of a commercially available trichloroheptafluorobutane and 10 ml of Methjrläthylketon. 50 g of another commercially available iron powder with the particle size range mentioned were added to this solvent. 2 percent of the commercially available toner A was admixed with the iron and the evaluation is carried out in a commercially available copier. The contents were mixed for half an hour and then the supernatant was decanted. The remaining treated iron powder was dried in a heating cabinet at 100 ° C. for two hours. 2 percent of the commercially available toner A were mixed into this treated iron powder. The developer powder was inserted into a commercially available copier and used several times over a six-month period. Excellent results have been obtained.

river guidance bej apiel

Embodiment 11

A Kengenanteil of 0.05 E HH egg casafluorundecylsäure v / urde in a mixture of 20 ml of the commercial Trichlorhepta-'fluorbutans and 10 al Lie thy la thy! Ketone dissolved. 100 g of the first-mentioned commercial iron powder (particle size distribution corresponding to the clear mesh size of approx. 0.18 to 0.06 mm) were added to this loser. The contents were mixed for half an hour and then the supernatant was decanted. The remaining treated iron powder was dried in a heating cabinet at 100 ° C. for two hours. This treated iron powder was mixed with the special toner in a ratio of 97.6 to 2.4. The developer powder thus obtained was tested several times in a commercially available copier over a period of six months and excellent results were obtained.

Implementation example 1 12

An amount ranging from 0.05 S HH-Eicasafluorundecylsäure v / urde dissolved in a mixture of 20 el of the commercial Trichlorheptafluorbutans and 10 ml LIethylathylketon. 30 g of the first-mentioned commercial iron powder with the mentioned particle size range were added to this solvent. The contents were mixed for half an hour and the supernatant was then decanted. The remaining treated iron powder was dried in a heating cabinet for two and a half hours at 100.degree. This treated iron powder was mixed with a commercially available toner B in a ratio of 97> 6 to 2.4. The physical properties of the developer powder were tested and proved to be very satisfactory.

Embodiment IJ

A proportion of Q ₉ O5 g of HH-eicasafluorundecylic acid was dissolved in a mixture of 20 ml of the commercially available trichloroheptafluorobutane and 10 ml of methyl ethyl ketone. 100 g of the first-mentioned commercial iron powder with the particle size range mentioned were added to this solvent. The contents were mixed for half an hour and the supernatant was then decanted.

8 0 s

The remaining treated iron powder was dried in a heating cabinet at 100 ° C. for two hours. This treated iron powder ■ was used in a ratio of 98 to 2 with a standard C mixed.

The copies made in those of the above tests with the developer powder in a copier was used showed a good filling, a good resolution and a low G-rundhell.e. The copier was used in each case -100 ToIt gate voltage operated instead of the usual level of ToIt. The lower gate voltage is made possible by the perfluorine treatment resulting properties. Besides, it was also iron discharge on 10 percent that. Value that one previously without perfluorinated carrier particles had to expect.

It should be noted that in the above embodiments Said proportion of the iron powder and toners apply to re-wrapping a copier with developer powders and that a corresponding proportionate addition to the tweeter and the carrier particles must be made in the developer powder to the same extent that it is used up.

Claims

609 ^ 40/1010

Claims (1)

Claims .J Carrier parts for a developer powder with one made of He tall, sand ode :. Glass existing core, characterized by the coating of the core with a perfluoro compound, which is a Perfluoroalkane, a perfluoroalkyl polyether, a perfluoro alcohol, a perfluoramine, a perfluoramid, a perfluoroester or a perfluoric acid. 2. carrier particles according to claim 1, characterized in that the Core is made of iron. j ,. Carrier particles according to Claim 2, characterized in that the size of the hern is from 40 to 1000 Ivlikron. 4.! Z; "- ÄgBrteilchen according to claim J, characterized in that the Core is 50 to 400 microns in size. 5. Carrier particles according to claim 2, characterized in that the perfluoro compound is peifluorohexane, perfluoroheptane, perfluoroalkane-70, perfluoroalkane-80, perfluoroalkane-195 , perfluorokeroein-L, perfluorkerc-siii-E, IE-perfluoroheptane or 1H-perfluorooctane acts. 6. Carrier particles according to claim 2, characterized in that the perfluoro compound is ΙΗ, ΙΕ-pentadeeafruooctanol-l, lH, lE, 9H-hexafluoro-l-nonanol, ΙΗ, ΙΗ, ΙΙΗ-sicasafluor-l-undecanol, omega -hydroperfluoroethylcarbinol-1, omega-hydroperfluorobutylcarbinol-1, omega-hydroperfluorodecylcaibinol-l, omega-hydroperfluoro c tyl-2-methyl-2-ethanol, E ■ (CF ₂ ) ..CHOE (OEL), ο de r H CF ₂ ). · COH (CE ₅ ) ₂ . 7. Carrier particles according to claim 2, characterized in that the perfluoro compound is a fluoramide of the composition F- (CF ₂ ) ^ - COM ₂ , where η = 4 to 10, is a partially fluorinated aliphatic diester of the formula (CE ₂ ) _x CHE [C00CH ₂ (CF ₂ ) _m F] ₂ where E is a hydrogen atom, a straight-chain alkyl radical C ₁ to C ₁₂ , a straight-chain ÜJsnyl radical C ₂ to C ₁₂ or a phenyl radical, m is an integer from 5 to 11 and χ is an integer from 1 to 7, or a partially fluorinated beast of the formula 609840/1010 (CH ₂ ) _x CHR [COGCE ₂ (CP ₂ ) _n H] ₂ where R is a hydrogen atom, a straight-chain alkyl radical G, Mc C ₂ , a straight-chain alkenyl radical C ₂ Ms C ₁₂ or a phenyl radical, χ an integer from 1 to 7 ^and η a g, number of 4 Ms. Carrier particles according to claim 2, characterized in that it the perfluoro compound is a perfluoroalkyliaonocarbon- of the formula F (CF ₉ ) · COOII, in which η is an integer from 1 to 13, is a two-chain perfluoroalkyl ^ onoctrboxylic acid of the formulas (GFj ₉ -CF (CF ₉ ) - .COOE or (CF,) · (CF Cl ) -CF- (CP-) -COOH where η is an integer from 1 to 11, a partially fluorinated ilonocarboxylic acid of the formula F- (CFp) - (CH ₂ ) -COOH, where η is an integer from 1 to 10 and m is an integer from 2 to 16, or us a partially fluorinated monocarboxylic acid of the formula H (CF ₀ ) -CCOE, where η is an integer from 1 to 14. 9 · support part before η according to claim 1, characterized in that it the perfluoro compound is a perfluoroalkyl ether. 10. carrier te ilchen according to claim 1, characterized in that it in the perfluoro compound around 1H ", 1H, 9H-hexadecafluoro-1-nonane-! acts. 11. carrier particles according to claim 1, characterized in that it the perfluorocompound is 1HflH-pentadecafluoro-1-octanol acts. 12. carrier te ilchen according to claim 1, characterized in that it the perfluoro compound is perfluorocapric acid. 13. carrier particles according to claim 1, characterized in that it the perfluorocompound is about 11H-Ed casaf luo round cylic acid acts. 14. Trägerteileohen according to claim 1, characterized in that it the perfluoro compound is perfluoro-n-caprylic acid. 15 · carrier particles according to claim 1, characterized in that it the perfluoro compound is perfluorooctanamide. 60SS40 / 1010 -c. Inertia rtei lohe η according to claim 1, characterized in that it
sicli "the perfluorocompound is perfluorotributylainin. 17. Carrier particles according to claim 1, characterized in that it
the perfluoro compound is ΙΗ, ΙΞ, ΙΙΗ-eicasafluor-lundecanol. 13. Terf & hxbn eui- production of perfluorinated carrier particles for
A developing powder, characterized by the process steps ^ a] of the melting of a perfluoro compound, that is to say a perfluoroalkane, a perfluoroalkyl polyether, a perfluoroalcohol, a perfluoroamine, a perfluoroamine, a perfluoric acid or a perfluoric acid , with a solvent in one
Content from 0.01 "to 10 percent, [b] the contribution of the
Eernmaterials in .this solution, where it is "the core material is metallic, sand or glass, [c] the decanting of the solution and [d] the drying of the treated carrier particles. 19. The method according to claim 18, characterized in that it is.
the core material is iron. 20. The method according to claim 19 5, characterized in that the Ke rnaaterial has a particle size of 40 to 1000 IvÜkron. 21. The method according spoke 20, characterized in that the core material, rial has a particle size of 50 to 400 microns. 22. The method according to claim 19? characterized in that it is
the perfluoro compound is perfluorohexane, perfluoroheptane, perfluoroalkane-70, perfluoroalkane-80, perfluoroalkane-195, perfluoro kerosene-L, perfluoro kerosene-H, IH-perfluoroheptane or IH-perfluorooctane. 23. The method according to claim I9, characterized in that it is
the perfluorocompound is IHjlH-pentadecafluorooctanol-l, IH, IH, 9H-hexafluoro-1-nonanol, lHjlHjllH-bicasafluor-l-undecanol »Ome ga-hy drope rf luo räthyl oarbinol -1, Ome ga -hy drope rf luorbutyl carbinol-1, Ome ga-hy drope rfluordecylcarbi no 1-1, Ome ga-hy droperf luor octyl-2-methyl-2-ethanol, H- (CF ₂ ). -CHOH (CH,) or H- (CF ₂ ) ^
acts. 24. Terfahren according to claim I9, characterized in that "the perfluoro compound is a fluoramide of the composition F- (CF ₉ )» COKilp, where η = 4 to 10, is a partially fluorinated aliphatic beast of the formula (CH ₀ ) CHR [COOCH ₉ (CF ₉ ) F] ₉ , where R is a hydrogen atom, a straight-chain alkyl radical C ₁ to C ₁₉ , a straight-chain alkenyl radical C ₉ to G. " or a phenyl radical, m is an integer from 5 to 11 and χ are an integer from 1 to, or a partially fluorinated diester of the formula ■ '(CE ₂ ) CHR [COOCH ₂ (CF ₂ ) _n H] ₂ , where R is a hydrogen atom, a straight-chain alkyl radical C to C ₂ , a straight-chain alkenyl radical C ₂ to C. "■ or a phenyl radical, χ is an integer from 1 to 7 and η is an integer from 4 to 10. 25. The method according to claim 19, characterized in that the perfluoro compound is a perfluoroalkylmonocarboxylic acid of the formula F (CF ₂ ) -COOH, where η is an integer from 1 to 13, a two-chain perfluoroalkylmonocarboxylic acid of the formulas ( CF) ₂ · CF (CFg) _n -COOH or (CF,) ₂ - (CF ₂ Cl) · CF- (CF ^ -COOH, where η is an integer from 1 to 11, to a partially fluorinated monocarboxylic acid of the formula F - (CF ₀ ) - (CH ₀ ) -COOH, where η is a whole ^v 4'n £ 'm Number from 1 to 10 and m is an integer from 2 to 16, or a partially fluorinated monocarboxylic acid of the formula H (CF ₉ ) -COOH, where η is an integer from 1 to 14. 26. Terfahren according to claim 18, characterized in that it is the perfluoro compound is a perfluoroalkyl ether. 27. The method according to claim 18, characterized in that it is the perfluorocompound is IH, IH, 9H-hexadecafluoro-1-nonanol acts. 28. The method according to claim 18, characterized in that it is the perfluoro compound is ΙΗ, ΙΗ-pentadecafluoro-l-octanol. -29. Method according to claim 18, characterized in that it is the perfluoro compound is perfluorocapric acid. 30. The method according to claim 18, characterized in that it is attached the perfluoro compound is 11H-eicasafluorundecylic acid. 609840/1010 31. The method according to claim 18, characterized in that it is "The perfluoro compound is perfluoro-n-caprylic acid. 32. The method according to claim 18, characterized in that it is the perfluoro compound is perfluorooctanamide. 33 · The method according to claim 18, characterized in that it the perfluoro compound is perfluorotributylamine. 34 · The method according to claim 18, characterized in that it in the case of the perfluorocompound it is ΙΗ, ΙΕ, ΙΙΙΙ-eicasafruor-l-undecanol acts. 35 · The method according to claim 18, characterized in that it the solvent is a halocarbon solvent. 36. The method according to claim 18, characterized in that it is in the solvent to methyl ethyl ketone, acetone, white spirit or Naphtha acts. 37 · Elektro statographi see imaging process with the process steps of generating a latent electrostatic image on a recording surface and the application of an electrostatic finely powdered particles adhering to the surface of carrier particles Developer powder containing toner particles on the latent electrostatic image characterized by a structure of the Carrier particles with a core that is metal, sand or glass, this core containing a perfluorocompound is coated, which is a perfluoroalkane, a perfluoroalkyl polyether, a perfluoroalcohol, a perfluoroamine Perfluoramide, a perfluoro ester or a perfluoric acid is. 609840/1010