Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
81 words
In apparatus having a movable magnetizable medium capable of carrying latent magnetic images, magnetically attractable toner particles capable of developing the magnetic images of said medium and magnetic roll means for bringing said toner particles from a relatively remote location into continuous operative contact with said medium, the improvement comprising an eccentrically mounted and operated rake arrangement having a center wire stem and a plurality of transversely oriented curved wire tines, for urging toner particles into contact with said magnetic roll.
Claim 2
Dependent Claim
81 words
In apparatus having a movable magnetizable medium capable of carrying latent magnetic images, magnetically attractable toner particles capable of developing the magnetic images of said medium and magnetic roll means for bringing said toner particles from a relatively remote location into continuous operative contact with said medium, the improvement comprising an eccentrically mounted and operated rake arrangement having a center wire stem and a plurality of transversely oriented curved wire tines, for urging toner particles into contact with said magnetic roll.
Claim 3
Dependent Claim
81 words
An apparatus according to claim 1 wherein said rake arrangement is disposed in a toner bin and further including channel means shaped to conform to said magnetic roll and positioned to accept toner urged toward said magnetic roll by said rake arrangement, for providing a predeterminably shaped and dimensioned funneled channel for permitting the toner particles in the toner bin to reach said magnetic roll and be deposited thereon in a band dimensioned relative to the width dimension of the medium.
Claim 4
Dependent Claim
26 words
An apparatus according to claim 2 wherein said channel means includes adjustable metering means for controlling the depth of toner particles transported on the magnetic roll.
Claim 5
Dependent Claim
327 words
In a system for developing latent magnetic images on a movable magnetizable medium with magnetically attractable toner particles in which the toner particles are caused to be transported via a magnetic roller which consists of a core having a plurality of stationary magnets radially arranged relative to a center point of said core with each of said magnets being oriented to provide a pole face away from the center point and the outward pole faces are of alternate polarity, and which also consists of a non magnetic shell normally rotating about said core to carry toner particles held against said shell by the magnetic fields of said magnets from a toner reservoir to a toning zone next to said medium whereas said toner is brought into intimate contact with the magnetic images to develop same, the improvement comprising: Magnetic enhancing means arranged proximate to said toning zone and to said magnetic roll such that said magnetizable medium is disposed between said shell and said enhancing means, said enhancing means effecting a concentration of the magnetic field pattern between the two of said plurality of magnets closest to said medium, which two magnets are positioned such that a radial line extending from the center of said core to each said two magnets each form an angle with respect to another radial line which is perpendicular to said medium, and said last mentioned magnetic field pattern is concentrated in two relatively narrow bands substantially perpendicular to said medium, one band from each of said two magnets, wherein the space between said two concentrated magnetic field bands defines said toning zone which has very little magnetic field therein to affect said toner, and said toner in said concentrated magnetic field bands form stable bristles that resist mechanical disturbance, to thereby confine said toner in said toning zone and collect loose toner that is deposited on non magnetized background around said magnetic images as said developed images exit said toning zone.
Claim 6
Dependent Claim
327 words
In a system for developing latent magnetic images on a movable magnetizable medium with magnetically attractable toner particles in which the toner particles are caused to be transported via a magnetic roller which consists of a core having a plurality of stationary magnets radially arranged relative to a center point of said core with each of said magnets being oriented to provide a pole face away from the center point and the outward pole faces are of alternate polarity, and which also consists of a non magnetic shell normally rotating about said core to carry toner particles held against said shell by the magnetic fields of said magnets from a toner reservoir to a toning zone next to said medium whereas said toner is brought into intimate contact with the magnetic images to develop same, the improvement comprising: Magnetic enhancing means arranged proximate to said toning zone and to said magnetic roll such that said magnetizable medium is disposed between said shell and said enhancing means, said enhancing means effecting a concentration of the magnetic field pattern between the two of said plurality of magnets closest to said medium, which two magnets are positioned such that a radial line extending from the center of said core to each said two magnets each form an angle with respect to another radial line which is perpendicular to said medium, and said last mentioned magnetic field pattern is concentrated in two relatively narrow bands substantially perpendicular to said medium, one band from each of said two magnets, wherein the space between said two concentrated magnetic field bands defines said toning zone which has very little magnetic field therein to affect said toner, and said toner in said concentrated magnetic field bands form stable bristles that resist mechanical disturbance, to thereby confine said toner in said toning zone and collect loose toner that is deposited on non magnetized background around said magnetic images as said developed images exit said toning zone.
Claim 7
Dependent Claim
55 words
The system in accordance with claim 4 wherein said magnetic enhancing means comprises a member made of a relatively high magnetic permeability material for effecting the concentration of said magnetic field pattern between said two magnets closest to said medium to define said toning zone which in itself is relatively free of said magnetic field.
Claim 8
Dependent Claim
37 words
The system in accordance with claim 4 wherein said magnetic enhancing means comprises magnet means for effecting the concentration of said magnetic field pattern between said two magnets closest to said medium to define said toning zone.
Claim 9
Dependent Claim
106 words
The system in accordance with claim 6 wherein said magnet means comprises a magnet having at least two poles with one pole thereof being closest to a first one of said two magnets on said core closest to said medium where the polarity of said one pole is opposite the polarity of the pole of said first magnet which is closest to said medium, and the other pole of said magnet means being closest to the second one of said two magnets where the polarity of said other pole is opposite the polarity of the pole of said second magnet which is closest to said medium.
Claim 10
Independent Claim
110 words
The system in accordance with claims 5 and 7 including scavenger means proximate to said medium and downstream from said toning zone to remove excess toner from said medium, and wherein said enhancing means is elongated and extends from said toning zone along said magnetizable medium in the direction of movement of the medium to the vicinity of said scavenger means to effect a continued attracting magnetic influence on the toner already in contact with the magnetic images on said medium to both minimize degradation of the toner image as said medium moves away from said toning zone and to minimize any of said toner on said medium becoming airborne.
Claim 11
Independent Claim
92 words
The system in accordance with claims 4 and 7 wherein said magnetic enhancing means further comprises a plurality of permanent magnets between said toning zone and said scavenger means, with like poles of said last mentioned magnets being adjacent to each other causing the magnetic fields created thereby to be substantially normal to the surface of said magnetic medium and thereby exert a continued attracting magnetic influence on the toner already in contact with said magnetic medium and thereby minimize degradation of the toner image and to substantially suppress said airborne toner.