[go: up one dir, main page]

JPS5981671A - Magnetic recording medium - Google Patents

Magnetic recording medium

Info

Publication number
JPS5981671A
JPS5981671A JP19203782A JP19203782A JPS5981671A JP S5981671 A JPS5981671 A JP S5981671A JP 19203782 A JP19203782 A JP 19203782A JP 19203782 A JP19203782 A JP 19203782A JP S5981671 A JPS5981671 A JP S5981671A
Authority
JP
Japan
Prior art keywords
recording
characteristic
medium
magnetic
area
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP19203782A
Other languages
Japanese (ja)
Inventor
Teruyuki Onuma
大沼 照行
Nobuo Mochizuki
望月 延雄
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ricoh Co Ltd
Original Assignee
Ricoh Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP19203782A priority Critical patent/JPS5981671A/en
Publication of JPS5981671A publication Critical patent/JPS5981671A/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/36Monitoring, i.e. supervising the progress of recording or reproducing
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • G11B11/10Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
    • G11B11/105Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
    • G11B11/10595Control of operating function

Landscapes

  • Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)

Abstract

PURPOSE:To easily optimize recording condition against variance in medium characteristic during manufacture and to secure invariably constant recording characteristic by recording the medium characteristic other than in a normal recording area. CONSTITUTION:Medium characteristic is recorded previously in an area III of the magnetic disk 1 of an optomagnetic memory device and the medium characteristic read by a magnetic head 18 is inputted to a control circuit 20, which controls a power source 17 for a coil 16 and a laser light source 3 according to the medium characteristic to secure optimum recording condition. Thus, the recording characteristic is recorded other than in the normal recording area, so the recording condition is optimized automatically even when characteristic has variance during the manufacture, so the need for complicate operation by a service man, etc., is eliminated to secure the invariably constant recording characteristic.

Description

【発明の詳細な説明】 本発明は、磁気プリンタ、磁気メモリ装置等の磁気記録
装置において使用される磁気記録媒体に関する。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a magnetic recording medium used in magnetic recording devices such as magnetic printers and magnetic memory devices.

一般に、記録媒体の製造につき、十分な工程管理が行々
われていてもロットによシ多少の特性のバラツキが生ず
る。この場合、従来の電子写真複写機、プリンタにおい
ては、感光体の交換時にサービスマンがコロナ放電条件
、露光条件等の種々の条件を調整していたので、極めて
コストが高くて作業も煩雑で時間のかかるものである。
In general, even if sufficient process control is carried out in the production of recording media, there will be some variation in characteristics from lot to lot. In this case, in conventional electrophotographic copying machines and printers, service personnel had to adjust various conditions such as corona discharge conditions and exposure conditions when replacing the photoreceptor, which was extremely costly, complicated, and time-consuming. It takes a lot of effort.

一方、磁気記録媒体を用いる磁気プリンタや磁気メモリ
装置では、感光体以上に特性のバラツキが大きく、かつ
、記録特性への影響も大きい。しかも、特に磁気メモリ
装置では記録媒体の交換が頻繁に行なわれるので、記録
媒体のバラツキに対する対策は極めて重要である。
On the other hand, in magnetic printers and magnetic memory devices that use magnetic recording media, variations in characteristics are greater than in photoreceptors, and the influence on recording characteristics is also greater. Furthermore, especially in magnetic memory devices, recording media are frequently replaced, so it is extremely important to take measures against variations in recording media.

本発明は、このような点に鑑みなされたもので、製造時
の媒体特性のバラツキに対し、記録条件の適正化が容易
で常に一定した記録特性の確保に寄与しつる磁気記録媒
体金得ることを目的とする。
The present invention has been made in view of the above points, and provides a magnetic recording medium that can easily optimize recording conditions and always contribute to ensuring constant recording characteristics against variations in medium characteristics during manufacturing. With the goal.

本発明の一実施例を図面に基づいて説明する。An embodiment of the present invention will be described based on the drawings.

本実施例は、工場で磁気記録媒体を製造する際、たとえ
ば各ロット毎に6柚のn体特性ffi f1号化して正
規の記録領域外の領域に磁気潜仰として記Oしたもので
ある。たとえば、第1図に示すように磁気記録媒体が磁
気ディスク(1)の場合には、斜υで示す正規の記録領
域H外の内周部■または外周部■に媒体特性が記録され
るものである。また、第2図に示すように磁気記録媒体
が(磁気ドラム(2)(磁気ベルトでも同様)の場合に
は、そのlY、端部I、■が媒体特性記録領域とされる
。そして、記録すべき媒体特性としては、種々あるが、
特に保磁力He s残留磁化Mr (または飽和磁化M
s )、キュリ一温度Tcs膜厚dなどが記録される。
In this embodiment, when a magnetic recording medium is manufactured in a factory, for example, 6 pieces of n-body characteristics ffi f1 are encoded for each lot and recorded as magnetic latency in an area outside the regular recording area. For example, when the magnetic recording medium is a magnetic disk (1) as shown in Fig. 1, the medium characteristics are recorded on the inner circumference ■ or the outer circumference ■ outside the regular recording area H indicated by the diagonal υ. It is. In addition, as shown in FIG. 2, when the magnetic recording medium is a magnetic drum (2) (same for a magnetic belt), its lY, end I, and ■ are the medium characteristic recording area. There are various media characteristics that should be used, but
In particular, coercive force He s residual magnetization Mr (or saturation magnetization M
s), Curie temperature Tcs, film thickness d, etc. are recorded.

これらの媒体特性のデータは符号化してそのfま記録し
てもよいが、これらの媒体特性に基づいて記録装置側の
諸条件を変える動作を行なわせるような情報に変換して
記録してもよい。
The data of these medium characteristics may be encoded and recorded up to f, but it is also possible to convert it into information that causes the recording device to change the conditions based on these medium characteristics and record it. good.

このように磁気記録媒体自体にその媒体特性が記録され
ているので、磁気記録媒体を交換する際、この媒体特性
を読取って、この媒体特性に基づき第   1   表 記録条件を適正化できるように諸条件を変更すれば、磁
気記録媒体の特性のバラツキに関係なく常に安定した記
録特性が得られることになる。ここで、記録された媒体
特性の胱取りとしては、通常の磁気ヘッドによるもので
よいが、カー(Kerr )効果、ファラデー()’a
raday )効果を利用した光WR。
In this way, the medium characteristics are recorded on the magnetic recording medium itself, so when replacing the magnetic recording medium, it is possible to read the medium characteristics and optimize the recording conditions in Table 1 based on the medium characteristics. By changing the conditions, stable recording characteristics can always be obtained regardless of variations in the characteristics of the magnetic recording medium. Here, a normal magnetic head may be used to determine the characteristics of the recorded medium, but the Kerr effect, Faraday's
raday) Optical WR using the effect.

取υ方式でもよい。また、軌取った1)l]報による記
録諸条件の変更は、96録傳8体への人力方法が異なれ
ば変わってくるので、今、磁気ヘッドによる記録方式を
A方式、レーザー光+バイアス4+ti ifによる記
録方式をB方式として、変更方式’tc 81〜1表に
示す。
It is also possible to use the take method. In addition, changes in the recording conditions according to the 1) l] report will differ depending on the manual method used to record the 8 bodies of 96 recordings, so we have decided to change the recording method using the magnetic head to method A, laser light + bias. The recording method based on 4+ti if is set as B method and is shown in Table 81-1 of the modified method.

ここで、今、磁気ディスク(1)を用いた光磁気メモリ
装置への適用例を第3図に示す。この第3図において、
(3)はレーザー光源、(4)は偏光器、(5)&;J
、集光レンズ、(6)は光変調器、(7)は偏光器、(
8) t/J: ノ・−フミラー、(9)は集光レンズ
、0(鳥は)・−フミラー、090勺は検光器、α1α
4は光検出器、θ1は差動増幅器、0υはバイアス磁界
用のコイル、(1乃はilt、 i片である。
Here, an example of application to a magneto-optical memory device using a magnetic disk (1) is shown in FIG. In this figure 3,
(3) is a laser light source, (4) is a polarizer, (5) &;
, a condensing lens, (6) a light modulator, (7) a polarizer, (
8) t/J: no-fu mirror, (9) is a condensing lens, 0 (bird)-fu mirror, 090 is an analyzer, α1α
4 is a photodetector, θ1 is a differential amplifier, 0υ is a bias magnetic field coil, (1 and ilt are i pieces.

しかして、磁気ディスク(1)の領域■に位置さぜた磁
気ヘッド0→で読取った媒体特性が増幅器θ樟で増幅さ
れて制御回路−に入力される。そして、この制御回路(
イ)により媒体特性に応じてコイルoQ用の電源α乃と
レーザー光源(3)とが制御され、適正な記録条件が確
保されることになる。このように記録条件の適正化が自
動的に行なわれるので、サービスマン等による煩雑な作
条が不要となる。なお、特別に磁気ヘッドα稗を設けず
、正規の記録情報を読取る光検出器を利用して媒体特性
を読取るようにしてもよい。
Thus, the medium characteristics read by the magnetic head 0→ located in the area (1) of the magnetic disk (1) are amplified by the amplifier θ and input to the control circuit -. And this control circuit (
By b), the power supply α for the coil oQ and the laser light source (3) are controlled according to the medium characteristics, thereby ensuring proper recording conditions. Since the recording conditions are automatically optimized in this way, there is no need for complicated preparation by a service person or the like. Note that the medium characteristics may be read using a photodetector that reads regular recorded information without providing a special magnetic head α.

また、磁気ドラム(2)を用いた磁気プリンタへの適用
例を第4図に示す。このプリンタは、磁石Q1)で磁気
ドラム(2)を一様に磁化し、磁石(イ)でバイアス磁
界を印加しながら熱ヘッド翰で画像信号を入力して磁気
潜像を形成し、これを現像ローラ(ハ)で現像し、転写
ローラ(ハ)で転写紙(ハ)に転写するものである。な
お、(イ)はクリーニング部である。しかして、磁気ド
ラム(2)全交換する際に、磁気ヘッド(ハ)で媒体特
性情報を読取シ、増幅器に)で増幅して制御回路−に入
力する。そして、この制御回路(ト)によシ媒体特性に
応じて電源Gカ、モータ6のを制御1熱ヘッドのに流す
電流あるいは現像ローラ?、Aに対するドクター03の
角度を変えてトナー供給バ1が変えられ、記録第件の適
正化が図らiする。なお、トナー供給量を袈える方式と
しては、現像ローラ(ハ)中の磁石をブロック状にして
磁気ドラム(2)との距離を変えるようにしてもよい。
Further, an example of application to a magnetic printer using a magnetic drum (2) is shown in FIG. This printer uniformly magnetizes a magnetic drum (2) with a magnet Q1), and inputs an image signal with a thermal head while applying a bias magnetic field with a magnet (A) to form a magnetic latent image. The image is developed by a developing roller (C) and transferred onto transfer paper (C) by a transfer roller (C). Note that (a) is a cleaning section. When the magnetic drum (2) is completely replaced, the medium characteristic information is read by the magnetic head (c), amplified by the amplifier (c), and inputted to the control circuit. Then, depending on the characteristics of the medium, this control circuit (G) controls the power supply G, motor 6, and current flowing through the thermal head or the developing roller. , by changing the angle of the doctor 03 with respect to A, the toner supply bar 1 is changed, and the recording condition is optimized. As a method for limiting the amount of toner supplied, the magnets in the developing roller (c) may be shaped like blocks and the distance from the magnetic drum (2) may be varied.

′!tた、磁石Q→と磁気ドラム(2)との距離を変え
ること、ある171け111゜磁石にすることによりバ
イアス(直昇を袈えるようにしてもよい。
′! In addition, by changing the distance between the magnet Q→ and the magnetic drum (2), or using a certain 171-111° magnet, it is possible to overcome the bias (straight rise).

本発明は、上述したように正規のic: 銘仙域外り)
領域にその媒体特性を記録したのて、製造11Kにnl
;録媒体の特性のバラツキがあっても、L fJさ11
.−Cいる媒体特性情報に基づき容易にMl、−10条
件全適i1E化することができ、よって、常に一定した
in−: f t・’l!+性を確保することができる
ものである。
As mentioned above, the present invention applies to regular ICs (outside the Meisen area).
After recording the media characteristics in the area, the nl
; Even if there are variations in the characteristics of the recording medium, L fJ is 11
.. Based on the medium characteristic information in -C, it is possible to easily make Ml, -10 conditions all suitable i1E, so that in-: f t・'l! is always constant. It is possible to ensure positive characteristics.

【図面の簡単な説明】[Brief explanation of drawings]

図面は本発明の一実施例を示すもので、2+S l l
>4は磁気ディスクの平面図、第2図は磁気1゛ラノ・
の斜視図、第3図は光磁気メモリ装置1′tへのi’4
 ノIJ filJンξ示す側面図、第4図は磁気プリ
ンタへの:n”A JIJ (+Ilを示す側面図であ
る。 l・・・磁気ディスク(4f1気記録媒体)、2・・・
磁気ドラム(磁気記録媒体) 出 願 人   株式会社リコー 一:・ご」1・・: 」J 図   17図 曇Fs、30 593−
The drawing shows one embodiment of the present invention, and 2+S l l
>4 is a plan view of the magnetic disk, and Figure 2 is a magnetic disk.
FIG. 3 is a perspective view of i'4 to the magneto-optical memory device 1't.
Fig. 4 is a side view showing :n''A JIJ (+Il) to the magnetic printer.l...magnetic disk (4f1 recording medium), 2...
Magnetic drum (magnetic recording medium) Applicant: Ricoh Co., Ltd.

Claims (1)

【特許請求の範囲】[Claims] 正規の記録領域外の領域にその媒体特性を記録してなる
ことを特徴とする磁気記録媒体。
A magnetic recording medium characterized in that medium characteristics are recorded in an area outside the regular recording area.
JP19203782A 1982-11-01 1982-11-01 Magnetic recording medium Pending JPS5981671A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19203782A JPS5981671A (en) 1982-11-01 1982-11-01 Magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19203782A JPS5981671A (en) 1982-11-01 1982-11-01 Magnetic recording medium

Publications (1)

Publication Number Publication Date
JPS5981671A true JPS5981671A (en) 1984-05-11

Family

ID=16284548

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19203782A Pending JPS5981671A (en) 1982-11-01 1982-11-01 Magnetic recording medium

Country Status (1)

Country Link
JP (1) JPS5981671A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5182734A (en) * 1988-06-24 1993-01-26 Sony Corporation Magneto-optical recording apparatus with pulse driven light beam and variable delay of magnetic field reversals based on recording medium characteristics
US5303225A (en) * 1989-10-30 1994-04-12 Matsushita Electrical Industrial Co., Ltd. Multi-layered optical disk with track and layer identification
US5367509A (en) * 1991-02-12 1994-11-22 Sony Corporation Method for reproducing information recorded on a magneto-optical recording medium including servo controlling the dimension of the reproduction region of the recording medium by means of a recorded signal
US5410527A (en) * 1985-05-14 1995-04-25 Canon Kabushiki Kaisha Information recording/reproducing apparatus including setting optimum recording condition or reproducing condition
JPH0927147A (en) * 1996-04-22 1997-01-28 Sanyo Electric Co Ltd Production of disk

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5410527A (en) * 1985-05-14 1995-04-25 Canon Kabushiki Kaisha Information recording/reproducing apparatus including setting optimum recording condition or reproducing condition
US5182734A (en) * 1988-06-24 1993-01-26 Sony Corporation Magneto-optical recording apparatus with pulse driven light beam and variable delay of magnetic field reversals based on recording medium characteristics
US5303225A (en) * 1989-10-30 1994-04-12 Matsushita Electrical Industrial Co., Ltd. Multi-layered optical disk with track and layer identification
US5428597A (en) * 1989-10-30 1995-06-27 Matsushita Electric Industrial Co., Ltd. Multi-layered optical disk with track and layer identification
US5367509A (en) * 1991-02-12 1994-11-22 Sony Corporation Method for reproducing information recorded on a magneto-optical recording medium including servo controlling the dimension of the reproduction region of the recording medium by means of a recorded signal
JPH0927147A (en) * 1996-04-22 1997-01-28 Sanyo Electric Co Ltd Production of disk

Similar Documents

Publication Publication Date Title
ATE300085T1 (en) OPTICAL SCANNING DEVICE, LENS LENS, APPARATUS FOR REPRODUCING AND/OR RECORDING AN OPTICAL INFORMATION RECORDING MEDIUM
JPS5981671A (en) Magnetic recording medium
US3277244A (en) Magnetic recorder-reproducer
US4520409A (en) Thermal and magnetic recording head
US4480258A (en) Magnetic recording medium
TWI223793B (en) Method and apparatus for reading from a domain expansion recording medium
WO2001084233A3 (en) Method for reproducing photographic images
US6195512B1 (en) Camera adapted for films provided with magnetic storage portions
JPS5859848A (en) Driving method for semiconductor laser
US4395470A (en) Process of forming magnetic latent images
JP4006195B2 (en) Manufacturing method of magnetic head
JPS604194Y2 (en) developing device
Albin Standardization of sound negatives and prints
Maurer Photographic sound for 8mm film
JPS5764273A (en) Magnetic photographing device
JPH0449551A (en) magneto-optical display device
JPS603860U (en) magnetic brush developing device
JP3069459B2 (en) Thermomagnetic recording method and thermomagnetic printing apparatus
JPH0431871A (en) Thermomagnetic recording medium
JPS60181770A (en) Magnetic transferring device
JPS59177583A (en) Magnetic latent image forming method
JPS58125073A (en) Developing device
JPS5814771A (en) Recording head for thermomagnetic writing
Bull A four-track magnetic transducer with replaceable working gaps
JPS60170874A (en) Magnetic recording device