fig1 shows a schematic sectional view of a preferred embodiment of an inventive developer station , a mixing and conveying means 3 and a stationary deflection housing 2 being accommodated in the housing 100 thereof . a magnet rotor 1 is driven in the deflection housing 2 via a drive shaft 10 . with the exception of a toner transfer area 2b described in greater detail with reference to fig2 the area of the deflection housing 2 shown at the top left in fig1 is fashioned as part of a generated cylinder surface . at about the level of a stripper ledge 6 attached to the housing 100 , the generated cylinder surface merges tangentially into a planar developer transfer area 2a . at its other end , the generated cylinder surface likewise merges tangentially into a toner return area 2c . the two areas 2a and 2c are connected to one another via a curved region 2d whose radius of curvature at the outside at least corresponds to the radius of the mixing and conveying means 3 . further , the transition between the two areas 2c and 2d of the deflection housing 2 is fashioned in the form of a tip 2e that is preferably composed of anti - static material . the magnet rotor 2 provided in the deflection housing 2 comprises magnets 11 along its circumference whose n poles are respectively adjacent to a s pole of a neighboring magnet 11 and vice versa . interspaces 12 between the magnets 11 are preferably filled with fiberglass - reinforced plastic 12 , so that an extremely stiff rotor is created as a result thereof . the magnet rotor 1 , which is driven via the drive shaft 10 , is displaceable via an adapter part 13 in a slideway 14 , being displaceable perpendicular to the rotational axis 10 in the direction of an arrow g . for example , the distance between the developer transfer area 2a of the deflection housing 2 and the magnet rotor 1 can be easily set by displacing the magnet rotor 1 in the direction of the arrow g . the mixing and conveying means 3 , whose mixing function shall be explained in greater detail later with reference to fig3 comprises paddles 30 with an l - shaped cross section whose inner paddle parts 30a are secured to a shaft 31 . in the sectional view in fig1 outer paddle parts 30b extend , for example , perpendicular to the inner paddle parts 30a in the rotational sense of the mixing and conveying means 3 indicated by the arrow a . for conveying toner , the paddles 30 comprise projections 30c at the outer end of the inner paddle parts 30a , these being preferably arranged parallel and outside the outer paddle parts 30b in a radial direction or , as can be seen from fig1 as an extension of the outer paddle parts 30b . by turning the mixing and conveying means 3 in the direction of the arrow a , developer material 7 -- which is accommodated in the lower part of the housing 100 of the developer station is picked up by the projections 30c in the direction of the developer transfer area 2a of the deflection housing 2 both due to centrifugal force as well as due to the magnetic attraction of the magnet rotor 1 . an alternating magnetic field arises due to the rotation of the magnet rotor 1 in the direction of the arrow b . the developer that is transported to the developer transfer area 2a by the mixing and conveying means 3 aligns itself along the magnetic field lines , as a result whereof what are referred to as toner brushes are formed . due to the alternating magnetic field caused by the rotation of the magnet rotor 1 , the carrier with the toner moves on the deflection housing 2 in the direction of the arrow c up to the toner transfer area 2b . fig2 shows an enlargement of the region referenced z in fig1 . as described above , the developer is transported on the deflection housing 2 in the direction of the arrow c . in order to enlarge the toner transfer area 2b between the deflection housing 2 and a photoconductive drum 4 , the deflection housing 2 is shaped to be complementary to the photoconductive drum 4 in the toner transfer area 2b . the toner that is not transferred onto the photoconductive drum 4 as well as the carrier particles of the developer are further conveyed in the direction of an arrow d on the deflection housing 2 by the alternating magnetic field following the toner transfer area 2b that is generated with the magnet rotor 1 . the housing 100 of the developer station comprises a channel 101 charged with underpressure via which toner particles but particularly toner dust are suctioned off from the photoconductor 4 and conducted via a conduit ( not shown in fig2 ) such as , for example , a hose or a pipe into a collecting vessel ( likewise not shown ) or , potentially , are also returned into the developer station . as can be seen from fig1 the residual toner and the carrier particles are transported in the direction of the arrow d along the deflection housing 2 up to a toner return area 2c . toner and carrier particles fall from the toner return area 2c back into a developer mixing space 5 since , on the one hand , the magnetic field generated by the magnet rotor 1 becomes weaker and weaker in the toner return area 2c due to the increasing spacing between the magnet rotor 1 and the deflection housing 2 in the conveying direction of the toner and carrier ( arrow d ), and the force of gravity due to the earth &# 39 ; s attraction additionally acts on the toner and the carrier particles . the preferably anti - static tip 2e between the two areas 2c and 2d prevents toner and / or carrier from being transported along the deflection housing 2 from the area 2c into the area 2d . it is thus assured that only developer that has been mixed by the mixing and conveying means 3 and which has a predetermined ratio of toner to carrier particles is transported to the developer transfer area 2a . the structure of the mixing and conveying means 3 will be described in greater detail below with reference to fig1 and fig3 which shows a sectional view of the mixing and conveying means 3 along the line iii -- iii in fig1 . the mixing and conveying means 3 preferably comprises an even - numbered plurality of paddles 30 that are uniformly arranged along the circumference of the shaft 31 . each paddle 30 comprises a plurality of deflection plates 33 that are arranged at the inner paddle part 30a of each paddle 30 on that side of an inner paddle part 30a facing away from the rotational direction a of the shaft 31 . as can be seen from fig3 each inner paddle part 30a comprises a plurality of recesses 32 , five such recesses 32 being provided in the device shown in fig3 . the deflection plates 33 ( fig1 ) are connected to the inner paddle parts 30a at sides 33b . the end edges 33a of the deflection plates 33 that preferably are projecting from the inner paddle part 30a at an acute angle are emphasized with a thick stroke in fig3 . in fig3 the deflection plates 33 of the paddles 30 shown above the shaft 31 in fig3 extend upward from the plane of the drawing at an acute angle , whereas the deflection plates 33 of the paddles 30 shown below the shaft in fig3 project downward from the plane of the drawing , likewise at an acute angle . given a rotation of the mixing and conveying means 3 in the direction of the arrow a , the toner passes through the recesses 32 and , for example , is transported in the direction of the arrows e by the deflection plates 33 of the paddles 30 shown above the shaft 31 in fig3 and is transported in the direction of the arrows f by the deflection plates of the paddles which are shown below the shaft 31 . given a rotation in the direction of the arrow a in the illustration of the mixing and conveying means 3 in fig1 the deflection plates 33 either transport developer 7 into the plane of the drawing which is indicated by a circle with a cross -- or out of the plane of the drawing -- which is indicated by a circle with a dot . as can also thus be seen from fig1 the developer 7 is conveyed in opposite directions by two neighboring paddles 30 and is thereby mixed . it can also be seen from fig3 that developer repellers 34 are provided at the mixing and conveying means 3 in the region of the shaft ends 31a and 31b of the shaft 31 , so that developer that is transported in the direction toward the shaft bearings 35a or , respectively , 35b is kept away from the bearings 35a and 35b by the developer repellers 34 . although other modifications and changes may be suggested by those skilled in the art , it is the intention of the inventors to embody within the patent warranted hereon all changes and modifications as reasonably and properly come within the scope of their contribution to the art .