SU1767473A1 - Electrographic magnetic carrier - Google Patents

Description

Liamines (PEPA) are curing agents for epoxy resin with a crosslinking action. (T 6-02- 594-85). Epoxy resin E-41 (TU 6 101316-77). .

The manufacture of a carrier with the proposed coating is carried out as follows:. /, ..; .. .L-

Iron powder PZH82 (GOST 9849-86) 3 is used as ferromagnetic particles and has a fraction of particles of 60-200 µG in size. To prepare the working solution for

the coatings in Yoshalka with acetone pour in epoxy resin and mix for 20-30 minutes, Indulin is shifted about acetone for 3-4 hours until complete dissolution. Let's start

in roshor-mixer; Rabthor ZP-resin, acetone and solution are fed and blew on,

and stirred for 10–15 Shi, the hardener is loaded with hardener and the mixer is mixed for 10–1 min. h . A weighed amount of a direct powder of 40 kg is loaded into the mixer and, with a Constantly operating mixer, fill 6 ml of the epoxy resin solution with a stirrer. Stirring lasts for 30 minutes, then the temperature rises to 60 ° C. 1 h Heat treatment.

is completed and the carrier is held at 90 ° C for 30 minutes,

; ... The table shows examples of the manufacture of samples of the carrier, containing the boundary and average values of the introduced components.

Y v

An increase in the PEP content of more than 6.0% leads to a deterioration of adhesion to healthy particles, and the film itself becomes more fragile, which lowers the durability of the coating and eliminates it after the floor - 32 thousand cats become unaffected. Reducing the PEPA content to less than 3.0% does not allow a complete, hardened epoxy resin 4tb to be used for the strength of the coating and leads to a decrease in optical density of the image with increased background and positive effect on the circulation, the same applies to the accelerator-catalyst curing .v

An increase in the dye content of more than 3.6% leads to an undesirable significant increase in the specific charge, which makes it difficult for the toner to detach from the surface of the carrier during the development process.

A decrease in the dye content below 2.2% makes it possible to lower the triboelectric charge and reduce the quality of the copy. .

The use and quality of the hardener polyethylene ethylene together with the accelerator allows heat treatment to be carried out with a shorter time and with more tinsKOfi feMrtepaType, which affects the properties of the stick. The dye and the used openings allow to exclude the silicone resin from the coating composition, and thus ensure the penetration of the main features of the epoxy resin related to the adhesion strength to the iron base and stability. Image density. ; , The carrier is used in the operation of electrographic apparatuses, e-620K4 and other devices manufactured by the Grozny Office Equipment software, using the AG tool, as well as the ER-620P1-1 apparatus. . . Form u l a and z o b p. et e and

Electrographic magnetic, a carrier consisting of ferromagnetic particles coated with an epoxy resin coating and a hardener, which differs with that in order to improve the quality of the carrier in order to improve the optical density of the image. tri-electric characteristics; strong adhesion of the coating to the ferromagitic copper; coating; additional dye and primary removal catalyst. , about the quality of the platen pbye tylen polyamip at the next 6oF of the coating components, May. %one : ;: . . Dye ", .., 2,2-3,6 The main curing catalyst 1,8-3,5

Polyethylenepolyamine 3.0 - 6.0 Epoxy resinOstal.

90.67

80, 0

M

16,0

MB 2.6

2.2

Z.O-IG "10

0.9 0.02

2.2-10 More

50

Claims (3)

Claim An electrographic magnetic carrier consisting of ferromagnetic particles coated with an epoxy resin coating with a hardener, elastomer and 3 liamines (PEPA) are crosslinking epoxy hardeners. (TC 6-02594-85). Epoxy resin E-41 (TU 6 * 101316-77). · The manufacture of the carrier with the proposed coating is as follows, G,,: As ferromagnet particles, iron powder ПЖВ2 (GOST 9849-86) is used, from which a fraction of particles with a size of 60 - 200 microns is divided with pyosDyyanyem. To prepare the working solution for the lem, it is possible to heat-treat the coatings into • a stirrer with acetone. shorter time and at a lower epoxy resin and stirred at 20 - 30 / · temperature, which affects the properties of mines, Indulin for 3 to 4 hours of mixing 15 films. The colorant and cure used are cured in acetone until completely dissolved. Then, yours is allowed to be excluded from the composition according to,, a solution of подают Coating silicone resin is fed into the mixing reactor, and thereby; a resin, acetone and a solution of inductiv. . ensure the manifestation of the basic • and mix for 10 - 15 Min .. the properties of the epoxy resin, concerning ^: '' then load the hardener YyuShtel 20 adhesion strength to the iron base and,; · and mix for 10 - 15 min; .. stability in Time 'triboelectric Weighted amount of Sifted charge, which improves the optical powder, 40 kg are loaded into the mixer at · image density. . Constantly working stirrer in portions. The carrier is used when 6 liters of epoxy resin is used. 2'5 ounces of electrographic apparatus, brand 'Stirring lasts 30 minutes, for the ER-620K4 and other apparatuses, the temperature rises to 60 ° C and produced by Grovnensky Office Equipment, it takes 1 hour to heat-treat the manifestation of magnetic with a brush, а ,, ends with keeping the carrier at, '' ----- 90 ° С for 30 min. . . . thirty . The table shows examples of the manufacture of media samples, • Containing the boundary and average values of the introduced components. 35 ys ή τ6'Μ: ν (6 ·; Τ№δΛ ^ Λ · ρ6Μΐή ^ Η · νΐΛ'χ343ότϋ8. An increase in the content of the PEPA carrier of the carrier to improve the optical density of 6.0% leads to a deterioration of adhesion to the Image Hardness 'g by increasing the hundred' Leznov chastitsam.'3sama film becomes bylnosti .. triboelehtricheskih more Crunch Coy, which reduces the longevity 'harakteristiki'prochnosti clutch po- -. _to p _{YTI I} ferromagnetic particles pokrytio further comprises a dye and a basic curing catalyst , as a hardener - polyethylepolyamine 'in the following ratio to . Coatings nents, wt%: Dye The main catalyst for curing ¹ 'PolyethylenePolyamine Epoxy resin coating and its use after accustoming 32 thousand pounds becomes impossible. A decrease in the NEPA content of less than 3.0% does not completely cure the epoxy resin, which results in a lower optical density of the image with an increased background and negatively affects the print run. The same applies to the curing accelerator-catalyst NII. 2.2-3.6 1.8-3.5 3.0 - 6.0 The rest. I Example Binder, us Hardener, usL The curing catalyst UP .606 / 2, wt.% Dye Indin, ma e L Specific Earld, C / g Resource, thousand copies Optical density epoxy resin silicone resin hardened. connections with them Power line Images the background 1 92.10 - - 3.0 1.8 3,1 2.7 · 10 ^β 20 0.9 0.02 2 89.77 - - 6.66 2.67 3,1 6.7.10 ** More fifty 1.15 0.01 3 87, “(O - - 6.0 3,5 3.1 6.110 * 32 1,0 0.01 6 89.27 -. - 6.66 2.67 3.6 6.2-10 ** 25 1,0 0.01 5 90.67 - 6.66 2.67 2.2 3.0-10 ** 60 0.9 0.02 Pro- Type 80.0. 6.0 16.0 - -. 2.210 ** More fifty ' ' - \. ’Ηϋ o ,. about