JP2646500B2 - Camera and magnetic head holding device - Google Patents
Camera and magnetic head holding deviceInfo
- Publication number
- JP2646500B2 JP2646500B2 JP6251390A JP6251390A JP2646500B2 JP 2646500 B2 JP2646500 B2 JP 2646500B2 JP 6251390 A JP6251390 A JP 6251390A JP 6251390 A JP6251390 A JP 6251390A JP 2646500 B2 JP2646500 B2 JP 2646500B2
- Authority
- JP
- Japan
- Prior art keywords
- film
- magnetic head
- pad
- pressing
- pressure plate
- 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.)
- Expired - Fee Related
Links
Description
【発明の詳細な説明】 （発明の利用分野） 本発明は、フィルムに備わった磁気記憶部に対し、情
報の書き込み或いは読み出しを行う磁気ヘッドを有す
る、磁気記憶部付フィルムを使用することのできるカメ
ラ等の装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Application of the Invention) The present invention can use a film with a magnetic storage unit having a magnetic head for writing or reading information to or from a magnetic storage unit provided in the film. It relates to a device such as a camera.
（発明の背景） 近年、磁気記憶部を有するフィルムを使用し、この磁
気記憶部にシャッタ秒時，絞り値，年月日，タイトル等
の撮影情報を磁気ヘッドにより書き込み、かつ必要に応
じてこの情報を読み出すようにしたカメラが米国特許第
4864332号等にて提案されている。(Background of the Invention) In recent years, a film having a magnetic storage unit has been used, and photographing information such as a shutter time, an aperture value, a date, a title, and the like are written into the magnetic storage unit by a magnetic head. US Patent No.
It is proposed in 4864332 and others.
しかしながら、この種のカメラにおいて、第７図に示
す様に、磁気ヘッド22を圧板21に固定してフィルム24に
対する情報の書き込みや読み出しを行おうとすると、フ
ィルム24が圧板21の穴部21aのエッジ21b,21cに引っ掛か
ったり、この為にフィルム24に傷がついてしまう恐れが
あった。However, in this type of camera, as shown in FIG. 7, when the magnetic head 22 is fixed to the pressure plate 21 to write or read information on or from the film 24, the film 24 moves to the edge of the hole 21a of the pressure plate 21. There was a risk that the film 24 would be caught on the films 21b and 21c and that the film 24 would be damaged.
（発明の目的） 本発明は、以上の事情に鑑みなされたもので、磁気記
憶部を有するフィルムが引っ掛かったり、傷がついたり
することを防止し、更にはフィルム給送負荷の増大をな
くすことのできるカメラを提供しようとするものであ
る。(Objects of the Invention) The present invention has been made in view of the above circumstances, and prevents a film having a magnetic storage unit from being caught or scratched, and further prevents an increase in film feeding load. The aim is to provide a camera that can do it.
また、本発明は、磁気記憶部を有する写真フィルムが
引っ掛かったり、傷がついたりすることを防止し、更に
は写真フィルム給送負荷の増大をなくすことのできる磁
気ヘッド保持装置を提供しようとするものである。Another object of the present invention is to provide a magnetic head holding device capable of preventing a photographic film having a magnetic storage unit from being caught or scratched, and further eliminating an increase in photographic film feeding load. Things.
（発明の特徴） 上記目的を達成するために、本発明は、露光位置でフ
ィルムの平面性を確保するためのフィルム押さえ手段
と、該フィルム押さえ手段に保持される磁気ヘッドと、
該磁気ヘッドと対向する位置に設けられ、フィルムの磁
気記憶部を前記磁気ヘッド側に押圧する押圧手段と、前
記フィルム押さえ手段のフィルムと対向する側で前記磁
気ヘッド近傍のフィルム走行方向前後に設けられる、前
記磁気ヘッドに向かってフィルムから離れる方向に滑ら
かに傾斜する傾斜部とを有するカメラとするものであ
る。(Features of the Invention) In order to achieve the above object, the present invention provides a film holding means for securing the flatness of a film at an exposure position, a magnetic head held by the film holding means,
A pressing means provided at a position facing the magnetic head, for pressing a magnetic storage portion of the film toward the magnetic head; and a pressing means provided on the side of the film pressing means facing the film, in front of and behind the magnetic head in the film running direction. And a slant portion that is smoothly slanted in a direction away from the film toward the magnetic head.
また、上記目的を達成するために、本発明は、露光位
置で写真フィルムの平面性を確保するためのフィルム押
さえ手段と、該フィルム押さえ手段に保持される磁気ヘ
ッドと、該磁気ヘッドと対向する位置に設けられ、写真
フィルムの磁気記憶部を前記磁気ヘッド側に押圧する押
圧手段と、前記フィルム押さえ手段の写真フィルムと対
向する側で前記磁気ヘッド近傍の写真フィルム走行方向
前後に設けられる、前記磁気ヘッドに向かって写真フィ
ルムから離れる方向に滑らかに傾斜する傾斜部とを有す
る磁気ヘッド保持装置とするものである。Further, in order to achieve the above object, the present invention provides a film holding means for securing the flatness of a photographic film at an exposure position, a magnetic head held by the film holding means, and a magnetic head opposed to the magnetic head. A pressing means for pressing a magnetic storage portion of a photographic film toward the magnetic head, and a pressing means provided on the side of the film pressing means facing the photographic film, which is provided before and after the photographic film running direction near the magnetic head. A magnetic head holding device having an inclined portion which is smoothly inclined in a direction away from the photographic film toward the magnetic head.
（発明の実施例） 第１乃至第３図は本発明の第１の実施例を示すもので
あり、第１図は圧板及び磁気ヘッドを示す斜視図、第２
図は第１図Ａ−Ａ断面を含むカメラの要部断面図、第３
図は第１図Ｂ−Ｂ断面を含むカメラの要部断面図であ
る。(Embodiment of the Invention) FIGS. 1 to 3 show a first embodiment of the present invention. FIG. 1 is a perspective view showing a pressure plate and a magnetic head.
FIG. 1 is a sectional view of an essential part of the camera including a section taken along the line AA in FIG.
FIG. 1 is a cross-sectional view of a main part of the camera including a cross section taken along a line BB in FIG.
これらの図において、１は圧板、２は磁気ヘッド、３
はフィルム４を前記磁気ヘッド２に押し付けるためのパ
ッド、５はカメラ本体で、６はパッド移動用プランジャ
ー、７はアパーチャである。In these figures, 1 is a pressure plate, 2 is a magnetic head, 3
Is a pad for pressing the film 4 against the magnetic head 2, 5 is a camera body, 6 is a pad moving plunger, and 7 is an aperture.
磁気ヘッド２はそのフィルム接触面2aと圧板１のフィ
ルム接触面1bとが同一面上となるように該圧板１に固定
されており、圧板１は面取り部1aを有している。また、
圧板１はカメラ本体５の外レール5aに接触しており、フ
ィルム４はカメラ本体５の内レール5bと該圧板１の間で
形成される寸法l3を持つトンネル内を通過する。The magnetic head 2 is fixed to the pressure plate 1 such that its film contact surface 2a and the film contact surface 1b of the pressure plate 1 are flush with each other, and the pressure plate 1 has a chamfered portion 1a. Also,
The pressure plate 1 is in contact with the outer rail 5a of the camera body 5, and the film 4 passes through a tunnel having a dimension l3 formed between the inner rail 5b of the camera body 5 and the pressure plate 1.
フィルム４の厚み寸法はl4であり、前記寸法l3との関
係は「l3＞l4」となっているが、通常l3＝0.21mm、l4＝
0.14mmで、その差は0.07mmしかない。よって圧板１から
少しでも磁気ヘッド２が出っ張ると、フィルム４がカメ
ラ本体５と該磁気ヘッド２との間でつまってしまう為、
フィルム給送が遅くなったり、平面性が悪くなる。よっ
て、本実施例では、前述したように磁気ヘッド２のフィ
ルム接触面2aは圧板１のフィルム接触面1bより出っ張ら
ないように、つまり同一平面としている。但し、ここで
言う同一平面とは、諸々の物の公差等でわずかに出っ張
ることはあり、0.01mm前後の誤差は殆ど問題ないため、
これを含むものである。The thickness dimension of the film 4 is l4, and the relationship with the dimension l3 is “l3> l4”, but usually l3 = 0.21 mm, l4 =
0.14mm, the difference is only 0.07mm. Therefore, if the magnetic head 2 protrudes from the pressure plate 1 even a little, the film 4 is clogged between the camera body 5 and the magnetic head 2.
Film feeding is slow or flatness is poor. Therefore, in the present embodiment, as described above, the film contact surface 2a of the magnetic head 2 is formed so as not to protrude from the film contact surface 1b of the pressure plate 1, that is, to be on the same plane. However, the same plane here may protrude slightly due to tolerances of various things, and an error of about 0.01 mm is almost no problem,
Including this.
パッド３は前述したようにフィルム４を磁気ヘッド２
に押し付ける為のものであるが、これはフィルム４に備
わった磁気層（不図示）に磁気ヘッド２を密着させない
と情報の読み取り、及び書き込みが正確に行えないから
である。このパッド３のフィルム４への押し付けはパッ
ド移動用プランジャー６により行っている。なお、撮影
時等はフィルム４の平面性確保の為、該パッド３はフィ
ルム４面から退避させられている。As described above, the pad 3 is formed by attaching the film 4 to the magnetic head
This is because information cannot be read and written accurately unless the magnetic head 2 is brought into close contact with a magnetic layer (not shown) provided on the film 4. The pressing of the pad 3 against the film 4 is performed by a pad moving plunger 6. Note that the pad 3 is retracted from the surface of the film 4 to secure the flatness of the film 4 during photographing or the like.
ここで、前記パッド３と磁気ヘッド２が配置される圧
板１の面取り部1aの関係を第３図により説明すると、磁
気ヘッド２を固定する穴部を含む面取り部1aの寸法l6は
パッド３のフィルム給送方向の寸法l5より大きく（l5＜
l6）なっており、面取り部1aは磁気ヘッド２の全周に渡
って形成されている。言い換えると、パッド３の押圧面
の面積を、穴部を含む面取り部1aの面積より小さくして
いる。よって、フィルム４が圧板１に引っ掛かるといっ
たことがなくなると共に、情報の書き込み、読み出しが
確実に行えることになる。Here, the relationship between the pad 3 and the chamfered portion 1a of the pressure plate 1 on which the magnetic head 2 is arranged will be described with reference to FIG. 3. The dimension l6 of the chamfered portion 1a including the hole for fixing the magnetic head 2 is equal to that of the pad 3. Larger than l5 (l5 <
l6), and the chamfered portion 1a is formed over the entire circumference of the magnetic head 2. In other words, the area of the pressing surface of the pad 3 is smaller than the area of the chamfered portion 1a including the hole. Therefore, the film 4 does not get caught on the pressure plate 1 and information can be written and read reliably.
第４図は第３図の状態からフィルム４を給送し、パッ
ド３でフィルム４を磁気ヘッド２に押し付けた状態を示
すものであり、フィルム４は磁気ヘッド２の曲面（Ｒ
面）に添い、かつ圧板１が面取られている為、滑らかに
変形する。この時パッド３も弾性部材でできている為に
変形し、確実に情報の読み取り、書き込みが可能とな
る。FIG. 4 shows a state in which the film 4 is fed from the state of FIG. 3, and the film 4 is pressed against the magnetic head 2 by the pad 3, and the film 4 has a curved surface (R) of the magnetic head 2.
Surface) and the pressure plate 1 is chamfered, so that it is smoothly deformed. At this time, since the pad 3 is also made of an elastic member, it is deformed, so that it is possible to reliably read and write information.
第５図は本発明の第２の実施例における主要部を示す
断面図である。FIG. 5 is a sectional view showing a main part in a second embodiment of the present invention.
この実施例におけるパッド10にはフィルム４の接触面
が滑らかとなるようにテフロンシート11が張り付けられ
ており、且つその部分の形状はＲ面となっている。この
ことにより、フィルム４が該パッド10に引っ掛かった
り、傷付けられてしまうことがなくなる。A Teflon sheet 11 is attached to the pad 10 in this embodiment so that the contact surface of the film 4 is smooth, and the shape of the portion is an R surface. This prevents the film 4 from being caught or damaged by the pad 10.
第６図は本発明の第３の実施例における主要部を示す
断面図であり、これも第２の実施例と同様に、パッド12
にはフィルム４の接触面が滑らかとなるようにテフロン
シート13が張り付けられており、且つ角部13a,13bの形
状はＲ面となっている。このことにより、フィルム４が
該パッド12に引っ掛かったり、傷付けられてしまうこと
がなくなる。FIG. 6 is a sectional view showing a main part of a third embodiment of the present invention.
A Teflon sheet 13 is adhered so that the contact surface of the film 4 is smooth, and the corners 13a and 13b are rounded. This prevents the film 4 from being caught or damaged by the pad 12.
上記各実施例によれば、磁気ヘッドの周囲の圧板を斜
面に削り（面取り部を形成）、かつパッドの押圧面の面
積を、磁気ヘッド固定部である穴部の面積より小さくす
るようにしている為、フィルムをパッドで磁気ヘッドに
押し付けた状態でも、フィルムは圧板に引っ掛かること
なくスムーズに磁気ヘッドと密着したまま移動する為、
フィルム給送負荷も増えず、傷がつけられるといったこ
ともなく、確実な情報の書き込み及び読み出しを行え
る。また、磁気ヘッドは圧板面より出っ張っていない
為、フィルムの平面性を損なうこともない。さらに、パ
ッドにテフロンシートを貼り、その先端部にエッジ部が
無い構造（Ｒ面）としている為、該パッドによりフィル
ムが傷つけられることもなくなる。According to each of the above-described embodiments, the pressure plate around the magnetic head is cut into a slope (a chamfered portion is formed), and the area of the pressing surface of the pad is made smaller than the area of the hole serving as the magnetic head fixing portion. Therefore, even when the film is pressed against the magnetic head with the pad, the film moves smoothly and closely with the magnetic head without being caught on the pressure plate.
It is possible to reliably write and read information without increasing the film feeding load and without damaging the film. Further, since the magnetic head does not protrude from the pressure plate surface, the flatness of the film is not impaired. Further, since a Teflon sheet is attached to the pad and the end portion has no edge portion (R surface), the pad does not damage the film.
（発明と実施例の対応） 以上の実施例において、圧板１が本発明のフィルム押
さえ手段に、磁気ヘッド２が本発明の磁気ヘッドに、パ
ッド3,10又は12が本発明の押圧手段に、面取り部1aが本
発明の傾斜部に、それぞれ相当する。(Correspondence between the invention and the embodiment) In the above embodiment, the pressure plate 1 serves as the film pressing means of the present invention, the magnetic head 2 serves as the magnetic head of the present invention, and the pads 3, 10 or 12 serve as the pressing means of the present invention. The chamfered portions 1a respectively correspond to the inclined portions of the present invention.
（発明の効果） 以上説明したように、本発明によれば、磁気記憶部を
有するフィルムが引っ掛かったり、傷がついたりするこ
とを防止し、更にはフィルム給送負荷の増大をなくすこ
とのできるカメラを提供できるものである。(Effects of the Invention) As described above, according to the present invention, it is possible to prevent a film having a magnetic storage unit from being caught or damaged, and further to prevent an increase in film feeding load. A camera can be provided.
また、本発明によれば、磁気記憶部を有する写真フィ
ルムが引っ掛かったり、傷がついたりすることを防止
し、更には写真フィルム給送負荷の増大をなくすことの
できる磁気ヘッド保持装置を提供できるものである。Further, according to the present invention, it is possible to provide a magnetic head holding device that can prevent a photographic film having a magnetic storage unit from being caught or damaged, and can further prevent an increase in photographic film feeding load. Things.
第１図は本発明の第１の実施例における圧板と磁気ヘッ
ドを示す斜視図、第２図は第１図Ａ−Ａ断面を含むカメ
ラの要部断面図、第３図及び第４図は第１図Ｂ−Ｂ断面
を含むカメラの要部断面図、第５図は本発明の第２の実
施例における圧板と磁気ヘッド及びパッドを示す断面
図、第６図は本発明の第３の実施例における圧板と磁気
ヘッド及びパッドを示す断面図、第７図は従来の圧板と
磁気ヘッド及びパッドを示す断面図である。 １……圧板、２……磁気ヘッド、３……パッド、４……
フィルム、10,12……パッド、11,13……テフロンシー
ト。FIG. 1 is a perspective view showing a pressure plate and a magnetic head according to a first embodiment of the present invention, FIG. 2 is a sectional view of an essential part of a camera including a section AA in FIG. 1, and FIGS. 1 is a cross-sectional view of a main part of a camera including a cross section taken along line BB, FIG. 5 is a cross-sectional view showing a pressure plate, a magnetic head, and a pad according to a second embodiment of the present invention, and FIG. FIG. 7 is a sectional view showing a pressure plate, a magnetic head, and a pad in the embodiment, and FIG. 7 is a sectional view showing a conventional pressure plate, a magnetic head, and a pad. 1 ... Pressing plate, 2 ... Magnetic head, 3 ... Pad, 4 ...
Film, 10,12 ... pad, 11,13 ... Teflon sheet.
Claims (2)
めのフィルム押さえ手段と、該フィルム押さえ手段に保
持される磁気ヘッドと、該磁気ヘッドと対向する位置に
設けられ、フィルムの磁気記憶部を前記磁気ヘッド側に
押圧する押圧手段と、前記フィルム押さえ手段のフィル
ムと対向する側で前記磁気ヘッド近傍のフィルム走行方
向前後に設けられる、前記磁気ヘッドに向かってフィル
ムから離れる方向に滑らかに傾斜する傾斜部とを有する
ことを特徴とするカメラ。1. A film holding means for ensuring the flatness of a film at an exposure position, a magnetic head held by the film holding means, and a magnetic storage portion of the film provided at a position facing the magnetic head. Pressing means for pressing the magnetic head side, and the film pressing means provided on the side facing the film in the film running direction near the magnetic head, and smoothly inclined in a direction away from the film toward the magnetic head. A camera comprising:
るためのフィルム押さえ手段と、該フィルム押さえ手段
に保持される磁気ヘッドと、該磁気ヘッドと対向する位
置に設けられ、写真フィルムの磁気記憶部を前記磁気ヘ
ッド側に押圧する押圧手段と、前記フィルム押さえ手段
の写真フィルムと対向する側で前記磁気ヘッド近傍の写
真フィルム走行方向前後に設けられる、前記磁気ヘッド
に向かって写真フィルムから離れる方向に滑らかに傾斜
する傾斜部とを有することを特徴とする磁気ヘッド保持
装置。2. A film holding means for securing the flatness of a photographic film at an exposure position, a magnetic head held by the film holding means, and a magnetic head provided at a position facing the magnetic head. Pressing means for pressing the storage unit toward the magnetic head; and a film pressing means provided on the side facing the photographic film, which is provided in the vicinity of the magnetic head before and after the running direction of the photographic film, moving away from the photographic film toward the magnetic head. A magnetic head holding device having an inclined portion that is smoothly inclined in a direction.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6251390A JP2646500B2 (en) | 1990-03-15 | 1990-03-15 | Camera and magnetic head holding device |
| DE69129915T DE69129915T2 (en) | 1990-03-15 | 1991-03-14 | Camera for using a magnetic layer memory |
| US07/669,644 US5097278A (en) | 1990-03-15 | 1991-03-14 | Camera using a film with a magnetic memory |
| EP91103932A EP0446916B1 (en) | 1990-03-15 | 1991-03-14 | Camera using a film with a magnetic memory |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6251390A JP2646500B2 (en) | 1990-03-15 | 1990-03-15 | Camera and magnetic head holding device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03264934A JPH03264934A (en) | 1991-11-26 |
| JP2646500B2 true JP2646500B2 (en) | 1997-08-27 |
Family
ID=13202335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6251390A Expired - Fee Related JP2646500B2 (en) | 1990-03-15 | 1990-03-15 | Camera and magnetic head holding device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2646500B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0764168A (en) * | 1993-08-26 | 1995-03-10 | Olympus Optical Co Ltd | Camera capable of magnetic recording |
| JPH09222661A (en) * | 1996-02-15 | 1997-08-26 | Olympus Optical Co Ltd | Film pressing plate of camera for film provided with magnetic information recording part |
-
1990
- 1990-03-15 JP JP6251390A patent/JP2646500B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03264934A (en) | 1991-11-26 |
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| LAPS | Cancellation because of no payment of annual fees |