JPH0363061B2 - - Google Patents

Info

Publication number
JPH0363061B2
JPH0363061B2 JP56019636A JP1963681A JPH0363061B2 JP H0363061 B2 JPH0363061 B2 JP H0363061B2 JP 56019636 A JP56019636 A JP 56019636A JP 1963681 A JP1963681 A JP 1963681A JP H0363061 B2 JPH0363061 B2 JP H0363061B2
Authority
JP
Japan
Prior art keywords
contact
sensitivity
display
film
contacts
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 - Lifetime
Application number
JP56019636A
Other languages
Japanese (ja)
Other versions
JPS5785053A (en
Inventor
Yoshiaki Nakayama
Katsuji Muramatsu
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.)
Fujifilm Holdings Corp
Original Assignee
Fuji Photo Film 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 Fuji Photo Film Co Ltd filed Critical Fuji Photo Film Co Ltd
Priority to JP1963681A priority Critical patent/JPS5785053A/en
Priority to DE19813150284 priority patent/DE3150284C2/en
Publication of JPS5785053A publication Critical patent/JPS5785053A/en
Publication of JPH0363061B2 publication Critical patent/JPH0363061B2/ja
Granted legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03CPHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C3/00Packages of films for inserting into cameras, e.g. roll-films, film-packs; Wrapping materials for light-sensitive plates, films or papers, e.g. materials characterised by the use of special dyes, printing inks, adhesives

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Exposure Control For Cameras (AREA)

Description

【発明の詳細な説明】[Detailed description of the invention]

本発明はフイルム感度を設定する手段を備えた
フイルムマガジン、さらに詳しくは電気的にフイ
ルム感度を検知可能なコード化された電気接点を
備えたフイルムマガジンに関するものである。 フイルムマガジン(カメラに装填されるフイル
ムの容器には、パトローネと称される一般の35mm
フイルム用の容器の他に、特殊なカメラ用のマガ
ジン、カートリツジ、フイルムパツク等種々のも
のが知られており、また国によつて同種のものを
別の呼称で呼ぶなど統一されていない点もある
が、これらを総称して、ここではフイルムマガジ
ンあるいはマガジンと称することとする)に、そ
の中に収容されたフイルムの感度を設定する手段
を機械的あるいは電気的に検知可能な方法で設け
ることは古くから知られている。しかしながら、
検知のための機構がそれぞれ異なり、カメラ側の
感度検知装置をマガジン毎に変えて製作しなけれ
ばならないため、特殊なマガジンと、これに合わ
せて製作した特殊な型式のカメラとからなる特殊
な方式でのみ実用化されたり、8ミリカメラのよ
うな特殊なマガジンを使用するものに限られたり
している。 最近、一般用のカラ−フイルムにISO400の高
感度のフイルムが開発され普及するに従い、
ISO100のフイルムとISO400のフイルムをカメラ
側で自動的に検知すべくフイルムマガジンに電気
的に検知可能な感度表示を付したものが開発さ
れ、実用化されている。 これは普通感度のISO100のフイルムと、高感
度のISO400のフイルム間での自動感度セツトを
可能にするものであるが、他の感度のフイルムは
自動感度セツトができない。現在国内では、この
2種のフイルムが主流であつてこのような感度検
知ができれば実用上ある程度までは便利である
が、これでは広くISO感度系列の感度をもつた各
種のフイルムに対応して国際的に使用可能なカメ
ラを作ることもできないし、使用するフイルムも
特定のものに制限されてしまうという問題があ
る。そこで、広くISO感度系列の感度を網羅した
方式が望まれる。 広く各種の感度を網羅し、電気的に検知可能な
感度設定接点を備えたフイルムマガジンとして、
実公昭53−31539号(米国特許第4024557号)に記
載されたものが知られている。これは5つの電気
接点からなるコード化された感度表示によつて
ASA16からASA1000までの感度を表示するよう
にしたものであるが、この方式も実用化されてい
ない。 これらのフイルム感度表示方式が広く普及して
いない理由には、各種の要因が考えられるが、大
きな理由はその方式が国際的に統一された規格に
までなつておらず、多種の方式が単に別々に発表
されただけのものである上、規格化に適していな
いからである。そこで、国際的な規格化に適する
優れた方式が望まれる。 規格化を実現するためには、ISO感度系列を満
たす感度、即ち市販されているフイルムの感度お
よび将来市販される可能性の高いフイルムの感度
を広く網羅し、かつ検知機構も実現の容易なもの
でなければならない。広く各種の感度を網羅し、
電気的に検知可能な感度設定接点を設けたものと
して知られる上述の方式の1つの例(実公昭53−
31539号の第6図)は、ASA16から1000までの
ISO感度系列の中でASA25、250、500の3つの
感度が抜けている。これを埋めるためには接点の
数を5から6に1つ増加しなければならず、全て
の感度に対応するためにはカメラ側にも6つの接
点検知手段を設けなければならなくなる。6つの
接点を検知する機構は回路的にも複雑であり、コ
スト的にも高くなるので全ての機種のカメラにこ
の検知装置を設けるのは実用上困難である。 本発明は広くISO感度系列の感度を網羅し、構
造の簡単な検知機構によつて検知することができ
るフイルム感度設定接点を備えたフイルムマガジ
ンを提供することを目的とするものである。 すなわち、本発明の目的は規格化に適するフイ
ルム感度設定方式を提供することにある。 さらに本発明は感度表示用の接点を粗表示用と
精密表示用の2つのグループに分け、少数の接点
で粗い表示を可能にし、簡易型カメラあるいは普
及機では多数の感度をいくつかの段階に分けて粗
い感度セツトを可能にし、高級機では多数の接点
で精密な表示をして精密な感度セツトを可能にし
て、全てのカメラに高価な感度検知装置を備える
必要をなくしたフイルムマガジンを提供すること
を目的とするものである。 本発明のフイルムマガジンは、精密感度検出用
手段を備えた高級カメラまたは粗感度検出用手段
を備えた普及型カメラに装填されるもので、共通
電気接点と、感度表示を3つの位置に選択的に設
けられた粗表示用の電気接点と、2つの位置に選
択的に設けられた精密表示用の電気接点とをもつ
て構成し、共通電気接点と3つの粗表示用電気接
点をもう1つのグループとして隣接して配し、2
つの精密表示用電気接点をさらにもう1つのグル
ープとして隣接して配し、後者を前者に並べて配
してカメラによつては共通電気接点と粗表示用電
気接点のみを検知の対象とする小型の構造の簡単
な検知装置を設けるだけで全ての感度の検知がで
きるようにしたことを特徴とするものである。高
級機では共通接点と並んだ5つの両グループの接
点を検知の対象として、精密な感度セツトを可能
にすることができる。 すなわち本発明のフイルムマガジンは、フイル
ム感度設定接点付フイルムマガジンであつて、カ
メラ内の第1、第2、第3、第4、第5および第
6の6つの位置に電気接点を有し、第1の位置の
接点を共通接点とし、第2、第3および第4の3
つの位置には装填されるフイルムマガジンに設け
られた感度の粗表示接点検知用の第1接点、第2
接点および第3接点をそれぞれ有し、第5および
第6の2つの位置には装填されるフイルムマガジ
ンに設けられた感度の精密表示接点検知用の第4
接点および第5接点をそれぞれ有し、前記第1接
点を感度2倍表示検知用接点とし、第2接点を感
度4倍表示検知用接点とし、第3接点を感度16倍
表示検知用接点とし、前記第4接点と第5接点
を、感度21/3倍と感度22/3倍の表示検知用に使用す
るようにした精密感度検出用手段を備えたカメラ
または、 カメラ内の第1、第2、第3および第4の4つ
の位置に電気接点を有し、第1の位置の接点を共
通接点とし、第2、第3および第4の3つの位置
には装填されるフイルムマガジンに設けられた感
度の粗表示接点検知用の第1接点、第2接点およ
び第3接点をそれぞれ有し、前記第1接点を感度
2倍表示検知用接点とし、第2接点を感度4倍表
示検知用接点とし、第3接点を感度16倍表示検知
用接点として使用するようにした粗感度検出用手
段を備えたカメラに装填されるもので、 中に所定の感度のフイルムを収容し、外部から
電気的に接触しうる所定の複数位置に前記フイル
ムの感度に応じて選択的に配された複数の電気的
接点からなるフイルム感度設定接点を備えたフイ
ルムマガジンにおいて、 前記所定の複数位置が前記カメラの第1、第
2、第3、第4、第5および第6の位置に対応す
る位置からなり、第1の位置には感度表示用接点
の共通接点を設け、第2から第4までの3つの位
置には感度の粗表示用接点の第2接点から第4接
点を、第5および第6の2つの位置には感度の精
密表示用接点の第5接点および第6接点をそれぞ
れ設け、前記第2接点を感度2倍表示用接点と
し、第3接点を感度4倍表示用接点とし、第4接
点を感度16倍表示用接点とし、前記第5接点と第
6接点を、感度21/3倍と感度21/3倍の表示用に使用
するようにしたことを特徴とするものである。 これによつて、21/3倍、22/3倍の接点を使用しな
いときは基本感度の2n倍の感度の22/3倍(1段上
の感度)および22/3倍(2段上の感度)の感度も
2n倍として検知することになり、2n倍の感度とし
て露出制御手段が作動することとなる。 このように、1段上、2段上の感度のフイルム
に対して1段下、2段下の感度のフイルム用の露
出をするということは、フイルムに対して1段オ
ーバー、2段オーバーの露出を与えることにな
る。しかしながら、この程度の露出誤差は実用上
問題とならない。したがつて、上記5つの感度設
定接点の中で、第2から第4の3つの接点のみを
使用した場合でも現在最も多く使われているカラ
ーネガフイルムでは実用上問題のない適正露出制
御が可能となる。 したがつて、普及機には簡単な感度検知装置を
設け、高級機には精密な感度検知装置を設けるこ
とが可能になる。 また、上記感度設定接点によればISO感度系列
にある19種類のフイルム感度を全て網羅すること
ができる。 以下、図面によつて本発明の1実施態様による
フイルムマガジンを詳細に説明する。 第1図は本発明のフイルムマガジンを35mm用ロ
ールフイルム(J135)用のパトローネ
(JISK7528)に応用した例を示す正面図で、第2
図はその一部拡大−線断面図である。このフ
イルムマガジン10は円筒状本体11の、フイル
ム取出スリツト12の鋭角(断面で)側に隣接す
る表面部分13に6個の電気的接点1,2,3,
4,5,6を選択的に設けるようにしたものであ
る。この電気的接点1〜6は、マガジン本体11
の導電性のある金属面の表面に塗布した樹脂等か
らなる絶縁層14を除去して形成することができ
る。 上記電気的接点1〜6は、共通の第1接点1、
感度2倍表示用接点2、感度4倍表示用接点3、
感度16倍表示用接点4からなる粗表示用接点グル
ープ1〜4と、感度21/3倍表示用接点5、感度22/3
倍表示用接点6からなる精密表示用接点グループ
5,6とからなり、仮に基本感度をISO25とする
と、下記の第2表に示すようにISO25から1600ま
での感度を表示することができる。 なお、ISO感度には算数表示と対数表示があ
り、前者は従来のASA感度と同じ値をもち、後
者は従来のDIN感度と同じ値をもつ。本明細書
では感度として算数表示のISO感度を採用して説
明する。すなわち、本明細書で、ISO感度、もし
くは感度とは、算数表示の感度を意味するもの
で、2倍、4倍等の倍数表示は算数表示のISO感
度の値が倍数の系列になることに基づいている。
したがつて、感度の値が等差的に増加する対数表
示の系列の場合には、上記倍数は差と読み替える
ことになる。 なお、第2表中、ISO感度1600の接点は、共通
×4×16すなわち1,3,4となつているが、こ
れは共通×2×16×21/3×22/3としてもよい。同様
に、ISO感度100の共通×4は共通×2×21/3×
22/3としてもよいが、実用上は接点の少ない前者
の方が好ましい。ただし、カメラの検出側の特殊
な要請から、後者の方が望ましい場合は後者のよ
うにすることができる。
The present invention relates to a film magazine with means for setting film sensitivity, and more particularly to a film magazine with coded electrical contacts capable of electrically detecting film sensitivity. Film magazine (The film container loaded into the camera is a general 35mm cartridge called a cartridge.
In addition to film containers, there are various other types of magazines, cartridges, and film packs for special cameras, and they are not standardized, with the same type of product being called by different names depending on the country. However, these are collectively referred to as film magazines or magazines here) to be provided with means for setting the sensitivity of the film stored therein using a mechanically or electrically detectable method. has been known since ancient times. however,
The detection mechanism is different for each magazine, and the sensitivity detection device on the camera side must be manufactured differently for each magazine. Therefore, a special method consisting of a special magazine and a special model of camera manufactured to match it is used. It is only put into practical use in Japan, and is limited to those that use special magazines such as 8mm cameras. Recently, with the development and widespread use of high-sensitivity ISO400 color films for general use,
In order to automatically detect ISO 100 film and ISO 400 film on the camera side, a film magazine with an electrically detectable sensitivity display attached to the film magazine has been developed and put into practical use. This allows automatic sensitivity setting between normal sensitivity ISO 100 film and high sensitivity ISO 400 film, but automatic sensitivity setting is not possible for films with other sensitivities. Currently, these two types of films are the mainstream in Japan, and it would be useful to some extent in practice if such sensitivity detection could be done, but this is not enough to accommodate various films with a wide range of ISO sensitivity. There are problems in that it is not possible to make a camera that can be used in general, and the film that can be used is also limited to certain types. Therefore, a method that covers a wide range of sensitivities in the ISO sensitivity series is desired. As a film magazine that covers a wide range of sensitivities and is equipped with electrically detectable sensitivity setting contacts,
The one described in Utility Model Publication No. 53-31539 (US Pat. No. 4,024,557) is known. This is achieved by a coded sensitivity display consisting of five electrical contacts.
It was designed to display sensitivities from ASA16 to ASA1000, but this method has not been put into practical use either. There are various possible reasons why these film sensitivity display methods are not widely used, but the main reason is that the methods have not yet reached the level of an internationally unified standard, and the various methods are simply different. This is because it was only announced in 2007 and is not suitable for standardization. Therefore, an excellent method suitable for international standardization is desired. In order to achieve standardization, it is necessary to cover a wide range of sensitivities that satisfy the ISO sensitivity series, that is, the sensitivities of commercially available films and films that are likely to be commercially available in the future, and to have a detection mechanism that is easy to implement. Must. Covering a wide variety of sensitivities,
One example of the above-mentioned method is known as having an electrically detectable sensitivity setting contact.
Figure 6 of No. 31539) is for ASA16 to 1000.
Three sensitivities are missing in the ISO sensitivity series: ASA25, 250, and 500. To compensate for this, the number of contacts must be increased by one from 5 to 6, and in order to accommodate all sensitivities, six contact detection means must be provided on the camera side as well. The mechanism for detecting the six contacts is complex in terms of circuitry and increases in cost, so it is practically difficult to provide this detection device in all types of cameras. SUMMARY OF THE INVENTION An object of the present invention is to provide a film magazine equipped with a film sensitivity setting contact that covers a wide range of sensitivities in the ISO sensitivity series and can be detected by a detection mechanism with a simple structure. That is, an object of the present invention is to provide a film sensitivity setting method suitable for standardization. Furthermore, the present invention divides the contacts for sensitivity display into two groups, one for rough display and one for precise display, and enables rough display with a small number of contacts. We provide a film magazine that eliminates the need for every camera to have an expensive sensitivity detection device. The purpose is to The film magazine of the present invention is loaded into a high-end camera equipped with a precision sensitivity detection means or a popular camera equipped with a coarse sensitivity detection means, and has a common electrical contact and a sensitivity display that can be selectively displayed in three positions. The structure has an electrical contact for coarse display provided at one position, and an electrical contact for precision display selectively provided at two positions, and a common electrical contact and three electrical contacts for coarse display are connected to another electrical contact for coarse display. Arranged adjacently as a group, 2
Another group of two precision display electrical contacts are arranged adjacent to each other, and the latter is arranged side by side with the former, so that some cameras can detect only the common electrical contact and the coarse display electrical contact. The present invention is characterized in that detection of all sensitivities can be performed simply by providing a detection device with a simple structure. In high-end models, it is possible to set the sensitivity precisely by detecting the common contacts and the five contacts in both groups. That is, the film magazine of the present invention is a film magazine with film sensitivity setting contacts, and has electrical contacts at six positions: first, second, third, fourth, fifth, and sixth within the camera. The contact at the first position is used as a common contact, and the second, third and fourth contacts
The two positions are the first contact for detecting the coarse sensitivity contact provided on the loaded film magazine, and the second contact.
It has a contact point and a third contact point, respectively, and the fifth and sixth two positions have a fourth contact point for precision display contact detection of the sensitivity provided on the film magazine to be loaded.
and a fifth contact, wherein the first contact is a contact for detecting a display with double sensitivity, the second contact is a contact for detecting a display with quadruple sensitivity, and the third contact is a contact for detecting a display with 16 times sensitivity, A camera equipped with precision sensitivity detection means in which the fourth contact point and the fifth contact point are used for display detection with a sensitivity of 2 1/3 times and a sensitivity of 2 2/3 times; It has electrical contacts at four positions, second, third, and fourth, with the contact at the first position serving as a common contact, and the three positions, second, third, and fourth, connecting to the film magazine to be loaded. A first contact, a second contact, and a third contact are respectively provided for rough display contact detection of the sensitivity provided, the first contact is a contact for double sensitivity display detection, and the second contact is used for quadruple sensitivity display detection. This device is loaded into a camera equipped with means for coarse sensitivity detection, with the third contact used as a contact for display detection with 16 times the sensitivity. In a film magazine comprising a film sensitivity setting contact consisting of a plurality of electrical contacts selectively arranged in accordance with the sensitivity of the film at a plurality of predetermined positions that can be electrically contacted, the plurality of predetermined positions are connected to the camera. The first position corresponds to the first, second, third, fourth, fifth, and sixth positions, and the first position is provided with a common contact for the sensitivity display contact, and the second to fourth positions are The three positions are provided with second to fourth contacts for rough sensitivity display, and the fifth and sixth two positions are provided with fifth and sixth contacts for precision display of sensitivity, respectively. The second contact is a contact for displaying 2x sensitivity, the third contact is a contact for displaying 4x sensitivity, the fourth contact is a contact for displaying 16x sensitivity, and the fifth and sixth contacts are a contact for displaying 2x sensitivity. The device is characterized in that it can be used for display with a sensitivity of /3 times and a sensitivity of 2 1/3 times. As a result, when the 2 1/ 3x or 2 2 / 3x contacts are not used, the sensitivity is 2 2/3 times the basic sensitivity (one step higher) and 2 2/3 times the basic sensitivity. (2 steps higher sensitivity)
It will be detected as 2n times more sensitive, and the exposure control means will operate as 2n times more sensitive. In this way, exposing for a film with a sensitivity one or two steps lower than a film with a sensitivity one or two steps higher means that the film is one or two steps over. It will give you exposure. However, this level of exposure error does not pose a practical problem. Therefore, even if only the second to fourth three contacts among the five sensitivity setting contacts mentioned above are used, it is possible to achieve appropriate exposure control without any practical problems with color negative film, which is currently the most commonly used film. Become. Therefore, it becomes possible to provide a simple sensitivity detection device in a popular model, and to provide a precise sensitivity detection device in a high-end model. Furthermore, the sensitivity setting contact described above can cover all 19 types of film sensitivity in the ISO sensitivity series. DESCRIPTION OF THE PREFERRED EMBODIMENTS A film magazine according to one embodiment of the present invention will be explained in detail below with reference to the drawings. Figure 1 is a front view showing an example in which the film magazine of the present invention is applied to a cartridge (JISK7528) for 35mm roll film (J135);
The figure is a partially enlarged cross-sectional view taken along the line. This film magazine 10 has six electrical contacts 1, 2, 3,
4, 5, and 6 are selectively provided. These electrical contacts 1 to 6 are connected to the magazine body 11
It can be formed by removing the insulating layer 14 made of resin or the like applied to the surface of the conductive metal surface. The electrical contacts 1 to 6 have a common first contact 1,
Contact 2 for double sensitivity display, contact 3 for quadruple sensitivity display,
Rough display contact groups 1 to 4 consisting of contact 4 for displaying 16x sensitivity, contact 5 for displaying 2 1 /3x sensitivity, and 2 2/3 sensitivity
It consists of contact groups 5 and 6 for precision display consisting of contact 6 for double display, and if the basic sensitivity is set to ISO25, it is possible to display sensitivities from ISO25 to 1600 as shown in Table 2 below. Note that there are two types of ISO sensitivity: arithmetic and logarithmic display; the former has the same value as conventional ASA sensitivity, and the latter has the same value as conventional DIN sensitivity. In this specification, the sensitivity will be explained using ISO sensitivity expressed in arithmetic terms. That is, in this specification, ISO sensitivity or sensitivity means the sensitivity in arithmetic display, and multiple display such as 2x, 4x, etc. means that the ISO sensitivity value in arithmetic display is a series of multiples. Based on.
Therefore, in the case of a logarithmically expressed series in which sensitivity values increase arithmetic, the above-mentioned multiple can be read as a difference. In Table 2, the contact points for ISO sensitivity 1600 are common x 4 x 16, or 1, 3, 4, but this can also be written as common x 2 x 16 x 2 1/3 x 2 2/3 . good. Similarly, ISO sensitivity 100 common × 4 is common × 2 × 2 1/3 ×
Although 2 2/3 may be used, the former is preferable in practice since it has fewer contact points. However, if the latter is more desirable due to special requirements on the detection side of the camera, the latter can be used.

【表】【table】

【表】 上記第2表に示されたフイルムのISO感度中、
※印を付した320、640、8001250、1600について
は、まだ市販されたフイルムが存在しないが、感
度系列から当然この中に入るか、これに続くもの
であり、将来の可能性を考慮して含めたものであ
る。 上記のような感度設定用電気接点1〜6は、電
気的にこれらの中の4個1〜4あるいは全部1〜
6の有無(組合せ)を検知する手段によつて容易
に検知することができ、これによつてカメラの自
動露出装置にフイルム感度情報を与えることがで
きる。そのための検知装置としては種々のものが
考えられ、いかなる形式のものも使用することが
できる。このような装置の簡単な例を第3図に示
す。 第3図は、フイルム感度情報を一対の端子X,
Y間の抵抗値として与えるフイルム感度情報入力
手段を示す。一方の端子Xは共通接点の第1接点
1に直結され、他方の端子Yは第2〜第6接点2
〜6の各接点にそれぞれ異なつた抵抗R2〜R6
を介して接続されている。また、端子X,Y間に
は基本感度用の抵抗R1が接続されている。各接
点1〜6は互いにフイルムマガジン本体11の導
電性金属部で直結しているから、表面が導電性と
なつている部分すなわち接点のあるところを通し
て各抵抗R1〜R6は互いに並列に接続され、こ
れらの抵抗を通つて端子XY間を流れる電流が抵
抗の大きさ(フイルム感度)に応じて制御され
る。すなわち、各抵抗の大きさを変えることによ
つて端子XY間を流れる電流を感度に応じて変え
ることができ、これをもつて感度の電気的検知を
行なうことができる。 上記のように、本発明のフイルムマガジンを使
用すれば、その感度設定用の接点を使つて露出の
制御が簡単に行なわれる。 また、本発明のフイルムマガジンは、上述のよ
うに第1から第4までの4つの接点1〜4のみに
よつても露出が2段階オーバーになる範囲の誤差
内でフイルム感度を設定するから、カメラ側に4
つの接点検知装置を設けただけでもたとえば
ISO25から1600までの19種類のフイルム感度を検
知することができる。したがつて、カメラに6つ
全部の接点を検知する装置を設けた高級機の他
に、4つの接点を検知する装置を設けた普及機を
製作することもでき、実用化に適する。 さらに、この例の場合には広くISO25から1600
まで19種類ものフイルム感度を網羅しているか
ら、国際的に広く、現在市販されている全てのフ
イルムのみならず、今後開発され発売される可能
性のあるフイルムの多くまでを対象として感度表
示が可能であり、国際規格にも適している。 なお、第3図の例では、フイルムマガジンに全
く接点が設けられていない場合にも露出制御装置
が自動的に作動するように調整用抵抗Rを常に時
定数回路に接続するようになつているが、この場
合はISO感度が基本感度である場合と同じ状態で
露出制御がされてしまう。したがつて、この場合
には調整用抵抗Rを可変抵抗とし、手動でRの大
きさ感度に応じて変えるようにするとよい。ある
いは、この場合には接点なしの警告信号を生ずる
ようにして、別に手動で可変抵抗を上記抵抗網と
切替えて接続するようにしてもよいし、上と同様
に、調整用抵抗Rを可変として手動でセツトする
ようにしてもよい。
[Table] Among the ISO sensitivities of the films shown in Table 2 above,
Regarding 320, 640, 8001250, and 1600 marked with *, there are no commercially available films yet, but based on the sensitivity series, they naturally fall within this range or follow them, and we have considered future possibilities. It is included. The electrical contacts 1 to 6 for setting the sensitivity as described above are electrically connected to 4 of them 1 to 4 or all 1 to 4.
The presence or absence (combination) of 6 can be easily detected by a means for detecting the presence or absence (combination) of 6, thereby providing film sensitivity information to the automatic exposure device of the camera. Various detection devices can be considered for this purpose, and any type of detection device can be used. A simple example of such a device is shown in FIG. Figure 3 shows film sensitivity information being sent to a pair of terminals X,
A means for inputting film sensitivity information provided as a resistance value between Y is shown. One terminal X is directly connected to the first contact 1 of the common contact, and the other terminal Y is connected to the second to sixth contacts 2.
-6 different resistances R2 to R6 for each contact
connected via. Further, a resistor R1 for basic sensitivity is connected between terminals X and Y. Since the contacts 1 to 6 are directly connected to each other through the conductive metal part of the film magazine body 11, the resistors R1 to R6 are connected in parallel to each other through the conductive surface, that is, the contact point. The current flowing between terminals XY through these resistors is controlled according to the magnitude of the resistors (film sensitivity). That is, by changing the size of each resistor, the current flowing between the terminals XY can be changed according to the sensitivity, and with this, the sensitivity can be electrically detected. As described above, by using the film magazine of the present invention, exposure can be easily controlled using its sensitivity setting contacts. Further, the film magazine of the present invention sets the film sensitivity within the range of overexposure by two steps even by using only the first to fourth contacts 1 to 4 as described above. 4 on the camera side
For example, if only one contact detection device is installed,
It can detect 19 different film sensitivities from ISO25 to 1600. Therefore, in addition to a high-end model in which the camera is equipped with a device for detecting all six contact points, a popular model in which the camera is equipped with a device for detecting four contact points can also be manufactured, which is suitable for practical use. Furthermore, in this example case widely ISO25 to 1600
Since it covers 19 types of film sensitivity, it is widely used internationally, and the sensitivity display covers not only all films currently on the market, but also many films that may be developed and released in the future. possible, and also suitable for international standards. In the example shown in Fig. 3, the adjustment resistor R is always connected to the time constant circuit so that the exposure control device operates automatically even when the film magazine is not provided with any contacts. However, in this case, the exposure will be controlled in the same way as when the ISO sensitivity is the basic sensitivity. Therefore, in this case, it is preferable to use a variable resistor as the adjusting resistor R, and manually change the magnitude of R according to the sensitivity. Alternatively, in this case, a warning signal without contact may be generated, and a variable resistor may be manually switched and connected to the above resistance network, or the adjustment resistor R may be made variable in the same manner as above. It may also be set manually.

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

第1図は本発明のフイルムマガジンの一実施態
様を示す正面図、第2図はその−線に沿つた
一部拡大断面図、第3図は本発明のフイルムマガ
ジンの感度表示を電気的に検知する抵抗回路の一
例を示す回路図である。 1……共通接点、2,3,4……フイルム感度
粗表示用接点、5,6……フイルム感度精密表示
用接点、10……フイルムマガジン、11……マ
ガジン本体、12……フイルム取出スリツト。
FIG. 1 is a front view showing an embodiment of the film magazine of the present invention, FIG. 2 is a partially enlarged sectional view taken along the - line, and FIG. 3 is an electrical sensitivity display of the film magazine of the present invention. FIG. 2 is a circuit diagram showing an example of a resistance circuit for detection. 1... Common contact, 2, 3, 4... Contact for coarse film sensitivity display, 5, 6... Contact for precise film sensitivity display, 10... Film magazine, 11... Magazine body, 12... Film ejection slit .

Claims (1)

【特許請求の範囲】 1 カメラ内の第1、第2、第3、第4、第5お
よび第6の6つの位置に電気接点を有し、第1の
位置の接点を共通接点とし、第2、第3および第
4の3つの位置には装填されるフイルムマガジン
に設けられた感度の粗表示接点検知用の第1接
点、第2接点および第3接点をそれぞれ有し、第
5および第6の2つの位置には装填されるフイル
ムマガジンに設けられた感度の精密表示接点検知
用の第4接点および第5接点をそれぞれ有し、前
記第1接点を感度2倍表示検知用接点とし、第2
接点を感度4倍表示検知用接点とし、第3接点を
感度16倍表示検知用接点とし、前記第4接点と第
5接点を、感度21/3倍と感度22/3倍の表示検知用に
使用するようにした精密感度検出用手段を備えた
カメラまたは、 カメラ内の第1、第2、第3および第4の4つ
の位置に電気接点を有し、第1の位置の接点を共
通接点とし、第2、第3および第4の3つの位置
には装填されるフイルムマガジンに設けられた感
度の粗表示接点検知用の第1接点、第2接点およ
び第3接点をそれぞれ有し、前記第1接点を感度
2倍表示検知用接点とし、第2接点を感度4倍表
示検知用接点とし、第3接点を感度16倍表示検知
用接点として使用するようにした粗感度検出用手
段を備えたカメラに装填され、 中に所定の感度のフイルムを収容し、外部から
電気的に接触しうる所定の複数位置に前記フイル
ムの感度に応じて選択的に配された複数の電気的
接点からなるフイルム感度設定接点を備えたフイ
ルムマガジンにおいて、 前記所定の複数位置が前記カメラの第1、第
2、第3、第4、第5および第6の位置に対応す
る位置からなり、第1の位置には感度表示用接点
の共通接点を設け、第2から第4までの3つの位
置には感度の粗表示用接点の第2接点から第4接
点を、第5および第6の2つの位置には感度の精
密表示用接点の第5接点および第6接点をそれぞ
れ設け、前記第2接点を感度2倍表示用接点と
し、第3接点を感度4倍表示用接点とし、第4接
点を感度16倍表示用接点とし、前記第5接点と第
6接点を、感度21/3倍と感度22/3倍の表示用に使用
するようにしたことを特徴とするフイルム感度設
定接点付フイルムマガジン。
[Claims] 1. Electrical contacts are provided at six positions: first, second, third, fourth, fifth and sixth within the camera, with the contact at the first position being a common contact, and the contact at the first position being a common contact. The 2nd, 3rd, and 4th three positions have a first contact, a second contact, and a third contact, respectively, for detecting a rough display contact of the sensitivity provided on the film magazine to be loaded, and a fifth and a third contact, respectively. 6 has a fourth contact and a fifth contact for detecting a sensitivity precision display contact provided on the loaded film magazine, respectively, and the first contact is a contact for detecting a double sensitivity display, Second
The contact is a contact for display detection with 4 times the sensitivity, the third contact is a contact for display detection with 16 times the sensitivity, and the fourth and fifth contacts are used for display detection with 2 1/3 times the sensitivity and 2 2/3 times the sensitivity. A camera equipped with means for detecting precision sensitivity adapted for use in a camera, or having electrical contacts at four positions, first, second, third and fourth, in the camera, the contact at the first position being connected to the camera; A common contact is provided, and a first contact, a second contact, and a third contact are respectively provided at the second, third, and fourth positions for detecting the rough display contact of the sensitivity provided in the loaded film magazine. , means for coarse sensitivity detection, wherein the first contact is used as a contact for detecting a display with double sensitivity, the second contact is used as a contact for detecting display with quadruple sensitivity, and the third contact is used as a contact for detecting display with sixteen times sensitivity. A plurality of electrical contacts are loaded into a camera equipped with a camera, a film having a predetermined sensitivity is housed therein, and a plurality of electrical contacts are selectively arranged at a plurality of predetermined positions that can be electrically contacted from the outside according to the sensitivity of the film. In a film magazine equipped with a film sensitivity setting contact made of A common contact for the sensitivity display contact is provided at the position, the second to fourth contacts of the rough sensitivity display contact are provided at the three positions from the second to the fourth, and the two contacts for the fifth and sixth contact points are provided. A fifth contact and a sixth contact for precision display of sensitivity are respectively provided at the position, the second contact is used as a contact for displaying double sensitivity, the third contact is used as a contact for displaying quadruple sensitivity, and the fourth contact is used as a contact for displaying quadruple sensitivity. With a film sensitivity setting contact, characterized in that the contact is for displaying 16 times the sensitivity, and the fifth and sixth contacts are used for displaying 2 1/3 times the sensitivity and 2 2/3 times the sensitivity. film magazine.
JP1963681A 1980-12-19 1981-02-13 Film magazine with sensitivity setting contact Granted JPS5785053A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP1963681A JPS5785053A (en) 1981-02-13 1981-02-13 Film magazine with sensitivity setting contact
DE19813150284 DE3150284C2 (en) 1980-12-19 1981-12-18 Exposure control device in a photographic camera

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1963681A JPS5785053A (en) 1981-02-13 1981-02-13 Film magazine with sensitivity setting contact

Related Child Applications (2)

Application Number Title Priority Date Filing Date
JP2035504A Division JPH0666020B2 (en) 1990-02-16 1990-02-16 Camera-film system
JP17070992A Division JPH05196987A (en) 1992-06-29 1992-06-29 Camera with automatic sensitivity setting device

Publications (2)

Publication Number Publication Date
JPS5785053A JPS5785053A (en) 1982-05-27
JPH0363061B2 true JPH0363061B2 (en) 1991-09-27

Family

ID=12004694

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1963681A Granted JPS5785053A (en) 1980-12-19 1981-02-13 Film magazine with sensitivity setting contact

Country Status (1)

Country Link
JP (1) JPS5785053A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57202524A (en) * 1981-06-08 1982-12-11 Minolta Camera Co Ltd Equipment for automatically setting sensitivity of film
JPS58219536A (en) * 1982-06-14 1983-12-21 Minolta Camera Co Ltd Camera capable of setting automatically film sensitivity
US4853721A (en) * 1986-12-24 1989-08-01 Minolta Camera Kabushiki Kaisha Automatic film information reading method and device
JP2647926B2 (en) * 1988-10-18 1997-08-27 オリンパス光学工業株式会社 Endoscope film cassette
JPH0719012B2 (en) * 1991-07-26 1995-03-06 ミノルタ株式会社 camera
JP2583995Y2 (en) * 1991-11-26 1998-10-27 旭光学工業株式会社 Connecting piece and circuit connection structure

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5531539U (en) * 1978-08-17 1980-02-29

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5531539U (en) * 1978-08-17 1980-02-29

Also Published As

Publication number Publication date
JPS5785053A (en) 1982-05-27

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