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US 4,739,348 AGranted
Recording head assembly using magnetic toner and image forming apparatus using the same
AssigneeCanon Kabushiki Kaisha
InventorsYujiro Ando, Haruo Fujii, Takashi Saito
Life of this patent
Estimating the term…
Abstract
A recording technique for causing a magnetic toner to pass through needle-like recording electrodes by a magnetic force and forming a toner image on a recording medium by a signal voltage applied to each recording electrode uses an arrangement to allow smooth flow of the toner near the recording electrodes; namely openings are formed in a wiring member along the recording electrodes, and the toner passes through the openings.
Claims30
A recording head assembly using a magnetic toner, comprising:
- recording electrodes arranged in a direction perpendicular to a moving direction of a magnetic field generated by moving magnetic field generating means;
- and
- a wiring member, having openings through which toner is moved by a magnetic force of said moving magnetic field generating means and conductive wires corresponding to said recording electrodes so as to electrically connect said recording electrodes with electrode drivers.
An image forming apparatus with a recording head using a magnetic toner, comprising:
- moving magnetic field generating means;
- recording electrodes arranged in a direction perpendicular to a moving direction of a magnetic field generated by said moving magnetic field generating means;
- a wiring member, having openings through which toner is moved by a magnetic force of said moving magnetic field generating means and conductive wires corresponding to said recording electrodes so as to electrically connect said recording electrodes with electrode drivers;
- recording electrode support means located between said recording electrodes and said moving magnetic field generating means, said recording electrode support means being adapted to support said recording electrodes and being arranged along said moving magnetic field generating means;
- and
- a recording member located opposite said recording electrodes, said recording member being adapted such that a toner image is formed thereon.
3 more elements
A magnetic head assembly using a magnetic toner, comprising:
- moving magnetic field generating means having opposite magnetic poles along a circumferential direction thereof and rotated about an axis thereof;
- recording electrodes arranged in a direction perpendicular to a moving direction of a magnetic field of said moving magnetic field generating means;
- a wiring member, having openings through which toner is moved by a magnetic force of said moving magnetic field generating means and conductive wires corresponding to said recording electrodes so as to electrically connect said recording electrodes with electrode drivers;
- nonmagnetic recording electrode support means located between said recording electrodes and said moving magnetic field generating means, said recording electrode support means being adapted to support said recording electrodes and being arranged along said moving magnetic field generating means;
- and
- a toner vessel located below said recording electrode support means.
3 more elements
A recording head assembly using a magnetic toner, comprising:
- recording electrodes arranged in series;
- and
- a wiring member, having openings through which toner is moved by a magnetic force of magnetic field generating means and conductive wires corresponding to said recording electrodes so as to electrically connect said recording electrodes with electrode drivers.
An image forming apparatus with a recording head using a magnetic toner, comprising:
- magnetic field generating means for conveying said toner;
- recording electrodes arranged in series;
- a wiring member, having openings through which toner is moved by a magnetic force of said magnetic field generating means and conductive wires corresponding to said recording electrodes so as to electrically connect said recording electrodes with electrode drivers;
- recording electrode support means located between said recording electrodes and said magnetic field generating means, said recording electrode support means being adapted to support said recording electrodes and being arranged along said magnetic field generating means;
- and
- a recording member located opposite said recording electrodes, said recording member being adapted such that a toner image is formed thereon.
3 more elements
A magnetic head assembly using a magnetic toner comprising:
- magnetic field generating means having opposite magnetic poles along a circumferential direction thereof;
- recording electrodes arranged in a direction perpendicular to a direction of a magnetic field of said magnetic field generating means;
- a wiring member, having openings through which toner is moved by a magnetic force of said magnetic field generating means and conductive wires corresponding to said recording electrodes so as to electrically connect said recording electrodes with electrode drivers;
- nonmagnetic recording electrode support means located between said recording electrodes and said magnetic field generating means, said recording electrode support means being adapted to support said recording electrodes and being arranged along said magnetic field generating means;
- and
- a toner vessel located below said recording electrode support means.
3 more elements
Dependencies are inferred from the claim text.