JPH04263146A - Magneto-optical recorder and magnetic head - Google Patents

Abstract

PURPOSE:To provide a magneto-optical recorder and a magnetic head which facilitate alignment between an optical head and the magnetic head and recording on both the surfaces of a magneto-optical recording medium. CONSTITUTION:Through-holes 8 through which a converged light is passed are provided in the cores 5 of magnetic heads 3A and the magnetic heads 3A are attached to optical heads 2 so as to handle the optical head 2 and the magnetic head 3A as one unit. Therefore, for instance, information can be recorded on both sides of a magneto-optical recording medium 1A.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic field modulation writing type magneto-optical recording device and a magnetic head used in this device.

0002

2. Description of the Related Art FIG. 4 is a schematic diagram showing a conventional magnetic field modulation writing type magneto-optical recording device disclosed in, for example, Japanese Unexamined Patent Publication No. 2-165449. An optical head 2 and a magnetic head 3 face each other with a magneto-optical recording medium 1 to be recorded sandwiched therebetween. During writing, a light spot focused by the objective lens 4 of the optical head 2 is irradiated onto the magneto-optical recording medium 1, while a magnetic field is applied from the magnetic head 3 to the recording bit, thereby writing information. The magnetic head 3 includes a magnetic core 5, a coil 6, and a slider 7 that generates lift.

0003

Problems to be Solved by the Invention As described above, the conventional magnetic field modulation writing type magneto-optical recording device
Since the optical head 2 and magnetic head 3 face each other with There was a problem in that the recording capacity of the magneto-optical recording medium 1 was small because it could only record on one side.

The present invention was made in order to solve these problems, and it is an optical system that facilitates alignment of an optical head and a magnetic head, and that can record on both sides of a magneto-optical recording medium, increasing the recording capacity. The purpose is to obtain a magnetic recording device. Another object of the present invention is to obtain a magnetic head for a magneto-optical recording device that enables the integration of an optical head and a magnetic head.

[0005]

[Means for Solving the Problems] A magneto-optical recording device according to the present invention is such that a through hole through which focused light passes is provided in the magnetic core of a magnetic head, and this magnetic head is attached to an optical head.

In the magnetic head according to the present invention, a through hole is provided in the magnetic core for passing the light focused by the objective lens of the optical head.

[0007]

According to the present invention, a through hole is provided in the magnetic core of the magnetic head, and this magnetic head is attached to the optical head, so that the optical head and the magnetic head can be handled as an integrated head.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1 and 2. FIG. 1 is a schematic diagram of the apparatus, and FIG. 2 is a perspective view showing the magnetic head of FIG. 1. Parts that are the same as or corresponding to those of the prior art are designated by the same reference numerals, and their explanation will be omitted. In the figure, 3A is a magnetic head, 8 is a through hole provided in the magnetic core 5 of the magnetic head 3A, 9 is a spring plate that applies a load to balance the lift generated in the magnetic head 3A, and 10 is a spring plate 9 This is an arm for attaching the optical head 2 to the optical head 2.

In the magneto-optical recording device configured as described above, during writing, the light focused by the objective lens 4 of the optical head 2 passes through the through hole 8 of the magnetic core 5 and irradiates the magneto-optical recording medium 1. On the other hand, a magnetic field is applied to the recording bit from the magnetic head 3A to write information.

Next, another embodiment of the present invention will be described with reference to FIG. The magneto-optical recording medium 1A in FIG. 3 has films on both sides that allow magneto-optical recording. An optical head 2 and a magnetic head 3A are provided on both sides of the magneto-optical recording medium 1A. According to this embodiment, the recording capacity can be doubled by recording on both sides of one magneto-optical recording medium 1A.

Furthermore, since the magnetic head 3A of the present invention has a through hole 8 in the magnetic core 5 as shown in FIG. 2, it is possible to integrate the optical head 2 and the magnetic head 3A as shown in FIG. enable.

0012

[Effects of the Invention] As described above, according to the present invention, the optical head and the magnetic head can be integrated by providing a through hole in the magnetic core through which focused light passes, so that alignment between the optical head and the magnetic head is easy. It is easy to record, and furthermore, it is possible to record on both sides of the magneto-optical recording medium, resulting in an effect of doubling the recording capacity.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram showing a magnetic field modulation type magneto-optical recording device according to an embodiment of the present invention.

FIG. 2 is a perspective view showing the magnetic head of FIG. 1;

FIG. 3 is a schematic diagram showing another embodiment of the invention.

FIG. 4 is a schematic diagram showing a conventional magnetic field modulation type magneto-optical recording device.

[Explanation of symbols]

1,1A magneto-optical recording medium 2 Optical head 3A magnetic head 4 Objective lens 5 Magnetic core 6 Coil 8 Through hole

Claims (2)

[Claims] 1. A magnetic field modulation type magneto-optical recording device, comprising a magnetic head having a through hole in a magnetic core through which light focused by an objective lens of an optical head passes, and the light focused by the objective lens passes through the through hole. A magneto-optical recording device characterized in that the magnetic head is attached to the optical head so as to pass through the optical head. 2. A magnetic head used in a magnetic field modulation type magneto-optical recording device, characterized in that a through hole is provided in the magnetic core for passing light focused by an objective lens of the optical head.