JPS61175054A - Recorder - Google Patents

Abstract

PURPOSE:To permit recording of high resolution, high density, and high contrast by laminating the conductive magnetic materials of a recording head and a sheet with interposition of an insulator layer in the direction of right angle to the relative moving direction with a sheet. CONSTITUTION:Conductive magnetic materials are laminated at an equal interval by using an insulator adhesive and joined with the upside of an insulator base plate 23. The tip 29 of a printing head is slantly polished in such a way as to make it a necessary width. The cross sectional shape of the conductive magnetic materials on the tips 29 of the printing head so formed becomes rectangular, whereby increasing magnetic forces at the tip of the printing head because the cross sectional area of the conductive magnetic materials near the magnet can be increased, and also increasing the attraction force of magnetic toners. Since the cross sectional shape of the conductive magnetic material is not trapezoidal, records capable of recording of high resolution and high contrast can be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a recording device such as printing, and particularly to a device for recording such as printing.
The present invention relates to a recording apparatus that performs recording with conductive magnetic toner using a recording head having a conductive magnetic material on a sheet capable of accumulating charges.

[Technical background of the invention and its problems]

Conventionally, as a recording device for this oak, one having a configuration as shown in Fig. 4 is known (Special Publication No. 55-30228, t\
f Publication No. 57-38899, etc.). A sheet 1 capable of storing static charges is constructed by forming an insulating layer 3 on a conductive sheet 2, and a gold recording head 4 on the sheet 1 moves relatively. As shown in FIG. 5, the recording head 4 includes a plurality of acicular conductive magnetic bodies 6f arranged in an array on a non-magnetic insulating substrate 5.
Further, a magnet 7 is arranged opposite to the conductive magnetic body 6.

At the time of recording, the insulating layer 3 of the sheet 1 is placed on the band 1 in advance, and the conductive magnetic toner 8 is uniformly attracted thereon by electrostatic force. When the sheet 1 is passed under the recording head 4 in this state, the magnetic toner 8 on the sheet 1 is attracted by the conductive magnetic body 6 of the recording head 4 by magnetic force, forming an electric circuit. When a DC pulsed pressure is applied between the conductive sheet 2 and the conductive magnetic body 6 from the pulsed upper pressure source 9, a current flows through the conductive magnetic body 6. flowing through the conductive magnetic toner 8;
A part of the insulator layer 3 is discharged. In the area discharged by this, the toner 8 that has adhered to the sheet 1 with a static force loses its adsorption force, and is detached by the magnetic force of the magnet 7.

Therefore, if the pulse voltage source 9 is modulated (turned on or off) according to the information to be recorded, the quaternary magnetic toner 8 is selectively deposited on the sheet 1 according to the information to perform recording 9. be able to.

By the way, the conductive magnetic body 6 in the recording head 4 has a thickness of about 50 μm so as to be able to attract a predetermined amount of toner, and is formed to have a width of about 50 μm to ensure recording resolution. Specifically, after a sheet-like conductive magnetic layer is bonded onto the non-magnetic insulating substrate 5, the conductive magnetic layer 6 is etched into needles with a width of about 50 μm at a density of, for example, 8 layers/mI. was forming.

However, when the conductive magnetic material 6 is formed by etching, the cross-sectional shape becomes trapezoidal as shown in FIG. 3 due to side etching, so that sufficient resolution cannot be obtained. On the other hand, if the conductive magnetic layer is made to have a full thickness groove, the degree of trapezoidal shape will be alleviated, but the cross-sectional area will decrease and the magnetic force necessary to attract the conductive magnetic toner will not be able to be obtained sufficiently. Once recorded, the problem of decreased contrast was encountered.

[Purpose of the invention]

SUMMARY OF THE INVENTION An object of the present invention is to provide a recording apparatus which has high resolution and is capable of recording 11 degrees and contrast leakage.

[Summary of the invention]

In order to achieve this object, the present invention provides an apparatus for recording with conductive magnetic toner on a sheet capable of accumulating silent charges using a recording head having a conductive magnetic body that moves relatively over the sheet. It is characterized by being laminated through the.

By adopting such a configuration, it is possible to manufacture a recording head without using an etching process, so that the problems that arise when conventional etching is used are solved.

[Embodiments of the invention]

Embodiments of the present invention will be described in detail below with reference to all the drawings.

FIG. 1 is a schematic diagram showing an example of the configuration of the present invention.

11 is a magnetically conductive sheet, 12 is an insulating layer, 15 is a magnetic toner, and 17 is a magnet. 13 is an insulating substrate.

14 is a conductive magnetic material, and 16 is a pulse voltage generation area source. The operating principle is the same as described above. FIG. 2 is a diagram illustrating the recording head section, which is a feature of the present invention, in more detail.

23 is an insulating substrate, 24 is a conductive magnetic material, and 28 is an insulating laminated material. The recording head is manufactured, for example, as follows. A conductive magnetic material (e.g. Fe-co, Fe-Ni kettle, etc.) with the required thickness (e.g. 50 μm) is coated with only the necessary layers using an insulating adhesive (organic adhesive, inorganic adhesive), etc. Laminated in the gap.

Next, this is bonded onto an insulating substrate 23. Furthermore, when the print head is manufactured as described above, the tip of the print head (
29) A conductive magnetic material having a rectangular cross-sectional shape can be obtained. Since it is possible to increase the cross-sectional area of the conductive magnetic material in the vicinity of the magnet, it is possible to increase the magnetic force at the tip of the print head, thereby increasing the magnetism and toner attraction force.

〔Effect of the invention〕

As explained above, according to the present invention, since the cross section of the conductive magnetic material does not become trapezoidal, it is possible to obtain a recording device with high resolution and high contrast.

[Brief explanation of drawings]

FIG. 1 is a schematic cross-sectional view of one configuration example according to the present invention. FIG. 2 is an enlarged view of the recording head section in the present invention. FIG. 3 is a sectional view showing a conventional example of a recording device. FIG. 4 is an enlarged view of the end of a conventional recording head. Agent: Patent Attorney Noriyuki Chika (1 other person)

Claims (1)

[Scope of Claim] In an apparatus for recording with conductive magnetic toner on a sheet capable of accumulating electrostatic charge using a recording head having a conductive magnetic material that moves relatively on the sheet, the recording head comprises: A recording device characterized in that conductive magnetic materials are laminated with an insulating layer interposed therebetween in a direction perpendicular to the direction of relative movement between the sheet and the recording head.