Magnetic recording image developing apparatus

An apparatus for developing a latent magnetic image on a moving magnetic recording medium, comprising:

• a moving magnetic recording medium having a uniformly magnetized background and reversal magnetized image regions;
• a developing magnet positioned adjacent said magnetic recording medium, the magnetic field produced by said developing magnet at the point of closest approach to said magnetic recording medium being the same direction as the magnetic field at the leading edge boundary between the background regions and the image regions on said magnetic recording medium in the direction of movement of said magnetic recording medium;
• a rotating nonmagnetic sleeve positioned around said developing magnet with a gap between an outer surface of said sleeve and said magnetic recording medium;
• means for supplying magnetic toner to said sleeve so that the toner forms a magnetic brush on the surface of the nonmagnetic sleeve and a toner chain extending from the magnetic recording medium;
• and
• means for inclining the extending toner chain in a direction opposite the direction of movement of the magnetic recording medium by maintaining a difference in the speed of movement of the magnetic brush and the magnetic recording medium.

An apparatus for developing a latent magnetic image on a moving magnetic recording medium, comprising:

• a moving magnetic recording medium having a uniformly magnetized background and reversal magnetized image regions;
• a developing magnet positioned adjacent said magnetic recording medium, the magnetic field produced by said developing magnet at the point of closest approach to said magnetic recording leading medium being the same direction as the magnetic field at the leading edge boundary between the background regions and the image regions on said magnetic recording medium in the direction of movement of said magnetic recording medium;
• a rotating nonmagnetic sleeve positioned around said developing magnet with a gap between an outer surface of said sleeve and said magnetic recording medium;
• means for supplying magnetic toner to said sleeve so that the toner forms a magnetic brush on the surface of the nonmagnetic sleeve and a toner chain extending from said leading edge boundary of the magnetic recording medium;
• and
• means for inclining the extending toner chain in a direction opposite the direction of movement of the magnetic recording medium by maintaining a difference in the speed of movement of the magnetic brush and the magnetic recording medium.