JPH0511327A - Film feeder for camera - Google Patents

Film feeder for camera

Info

Publication number
JPH0511327A
JPH0511327A JP3164611A JP16461191A JPH0511327A JP H0511327 A JPH0511327 A JP H0511327A JP 3164611 A JP3164611 A JP 3164611A JP 16461191 A JP16461191 A JP 16461191A JP H0511327 A JPH0511327 A JP H0511327A
Authority
JP
Japan
Prior art keywords
film
camera
signal
loaded
feeding
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.)
Granted
Application number
JP3164611A
Other languages
Japanese (ja)
Other versions
JP2825686B2 (en
Inventor
Hidetoshi Masuda
増田英歳
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP3164611A priority Critical patent/JP2825686B2/en
Publication of JPH0511327A publication Critical patent/JPH0511327A/en
Application granted granted Critical
Publication of JP2825686B2 publication Critical patent/JP2825686B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Exposure Control For Cameras (AREA)
  • Details Of Cameras Including Film Mechanisms (AREA)

Abstract

PURPOSE:To provide a film feeder for a camera without forcing a photographer to execute a troublesome operation even if the film of ISO25 and a film without having a DX code are loaded. CONSTITUTION:A rear cover state discriminating means, an electric film feeding means 4, and a film feed rate detecting means 9 are provided, and a constitution is adopted so that even if the film loaded on the camera has a discrimination impossible state in the absence of the film by a film sensitivity information reading means, a film winding action is executed accompanying with the completion of a photographing action when a rear cover is closed, and the film is fed by a prescribed quantity when a signal in response to the winding of the film is outputted front a film rate detecting means 9.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明はカメラのフィルム給送装
置に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a film feeding device for a camera.

【0002】[0002]

【従来の技術】これまで、カメラ本体内にセットされた
フィルムの感度情報を接片などを使用して読み取り、こ
の読み取った結果によって自動的にフィルムの給送を行
なうものは知られている。また、これらは多くの場合、
カメラの背蓋が開いているか閉じているかを検出するス
イッチ(以下にはスイッチをSWと略記する。)等の信
号と組み合わせて制御されている。
2. Description of the Related Art Up to now, there is known one in which sensitivity information of a film set in a camera body is read using a contact piece or the like, and the film is automatically fed according to the read result. Also, these are often
It is controlled in combination with a signal such as a switch (hereinafter, switch is abbreviated as SW) for detecting whether the back cover of the camera is open or closed.

【0003】この従来例を図3に示す。Z1は背蓋の開
閉に応じて変化するSWであり、ここでは開でon(H
レベル)、閉でoff(Lレベル)としている。給送制
御回路Z2でこの信号がLレベルだと、フィルム給送用
のモーターZ4への通電は行なわない。この例では、フ
ィルムの感度情報をISO3〜1の3本の接片SWで読
み取り、これらのSWの内少なくとも1本が導通状態で
あれば、インバータ(Z5〜7)、ORゲートZ8を介
してフィルム有り信号FILMがHレベルとなる構成に
なっている。このFILM端子がHレベルであり、か
つ、背蓋SW信号がoffであることを給送制御回路Z
2が検出すると、モーターZ4への通電を開始し、フィ
ルム送り量検出手段Z9からの信号を監視して、所定量
のフィルムを巻き上げたところでフィルム停止処理を行
なう。
This conventional example is shown in FIG. Z1 is a switch that changes according to the opening and closing of the back lid, and here it is open and on (H
Level) and closed (L level). If this signal is L level in the feeding control circuit Z2, the film feeding motor Z4 is not energized. In this example, the sensitivity information of the film is read by three contact pieces SW of ISO3 to 1, and if at least one of these SW is in a conductive state, it is passed through an inverter (Z5 to 7) and an OR gate Z8. The film presence signal FILM is set to the H level. When the FILM terminal is at H level and the back cover SW signal is off, the feeding control circuit Z
When 2 is detected, the energization of the motor Z4 is started, the signal from the film feed amount detecting means Z9 is monitored, and the film stop process is performed when a predetermined amount of film is wound up.

【0004】[0004]

【発明が解決しようとする課題】この従来例ではフィル
ムの感度情報を3本のSWで読み取って、これをフィル
ム在否情報として利用している。これは、カメラの構造
上の制約や製造上のコストの面の制約から、設置可能な
SW接片の数を減らす必要が生じたり、フィルム収納パ
トローネの在否を検出するSW等を新たに設けること等
が困難であるためである。この実施例では、3本のSW
接片の状態の組み合せによって8種類、すなわち、フィ
ルム無し、ISO50、100、200、400、80
0、1600、3200の区別が可能である。しかしな
がら、ISO25のフィルムやいわゆるDXコードのな
いフィルムを装填された場合には、フィルムが無い場合
との区別が出来ないので、上述したようなフィルムの自
動送りを行なうことは不可能である。
In this conventional example, the sensitivity information of the film is read by the three SWs and used as the film presence / absence information. This is because it is necessary to reduce the number of SW contact pieces that can be installed due to the structural restrictions of the camera and the manufacturing cost, and a new SW or the like for detecting the presence / absence of a film storage cartridge. This is because things are difficult. In this embodiment, three SWs
Eight types depending on the combination of contact pieces, that is, no film, ISO50, 100, 200, 400, 80
It is possible to distinguish 0, 1600, and 3200. However, when an ISO25 film or a film without a so-called DX code is loaded, it cannot be distinguished from the case without a film, and thus it is impossible to automatically feed the film as described above.

【0005】そこで、フィルム感度情報が検出されなく
ても撮影動作が行なわれると常にフィルム一駒分の巻き
上げ動作を行なうように構成されており、所定回数(例
えば4駒)撮影動作を行ない(空レリーズ)、巻き上げ
動作を正常に行なえばフィルム感度情報があるフィルム
を使用した場合と同様に使用できるように構成したカメ
ラも知られているが、所定回数空レリーズする必要があ
って操作が煩わしい。
Therefore, when the photographing operation is performed even if the film sensitivity information is not detected, the winding operation for one frame of film is always performed, and the photographing operation is performed a predetermined number of times (for example, 4 frames) (empty). There is also known a camera configured such that it can be used in the same manner as when a film having film sensitivity information is used if the release operation and the winding operation are normally performed, but the operation is cumbersome because it requires a predetermined number of empty releases.

【0006】また、このように感度情報を読み取れない
フィルムを初心者が装填した場合、空レリーズする必要
があることを知らなければ、撮影可能な所定位置に送っ
てないにも関わらず、撮影が始まっていると誤解しやす
い。さらに最悪の場合、フィルムの装填状態が悪く、上
述の一駒分の巻き上げ動作でフィルムが正常に送れなか
った場合には、全くフィルムが巻き上げられていないに
も関わらず、撮影者は巻き上げているものと錯覚してし
まい、結局何も撮影できていない、ということになる。
これらは、撮影者にとって撮影したいと思っていたもの
が撮影できていない、という致命的な問題である。
In addition, when a beginner loads a film whose sensitivity information cannot be read in this way, shooting starts even if he has not sent the film to a predetermined position where it can be shot, unless he knows that a blank release is necessary. Is easy to misunderstand. In the worst case, if the film is not loaded properly and the film cannot be fed normally by the winding operation for one frame, the photographer winds the film even though it has not been wound at all. I had the illusion that I couldn't shoot anything.
These are fatal problems that the photographer cannot capture what he / she wanted to photograph.

【0007】一方、このような致命的な事故を防ぐた
め、フィルム感度情報によらず、背蓋の開閉に応じた信
号だけに基づいて、背蓋が閉じられた場合にはいつでも
フィルム自動送り機構を作動させるものも知られてい
る。しかし、これではフィルムが装填されていなくても
背蓋を閉じると自動的にフィルム送り動作を行なうの
で、全く無駄な電力を消費してしまう。さらに、この時
正常なフィルムindex信号が来なければ撮影動作を
禁止するように構成されていたならば、フィルムを装填
していないときの作動チェックを行なうことも出来なく
なり、はなはだ使い勝手の悪いカメラになってしまう。
On the other hand, in order to prevent such a fatal accident, an automatic film feed mechanism is used whenever the back cover is closed based on only the signal corresponding to the opening / closing of the back cover, not depending on the film sensitivity information. It is also known to operate. However, in this case, even if no film is loaded, the film feeding operation is automatically performed when the back cover is closed, so that useless electric power is consumed. Furthermore, if the normal film index signal is not received at this time, if the shooting operation is prohibited, it will not be possible to check the operation when no film is loaded, which makes the camera extremely inconvenient. turn into.

【0008】本発明の目的は、従来のカメラにおける上
述の種々の問題点を解決し、従来よりも使いやすいカメ
ラを構成できる、改良されたフィルム給送装置を提供す
ることである。
SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned various problems in the conventional camera and to provide an improved film feeding apparatus capable of constructing a camera which is easier to use than the conventional one.

【0009】[0009]

【課題を解決するための手段】そこで、本発明では、背
蓋の状態判別手段と電動式フィルム給送手段とフィルム
送り量検出手段を設け、カメラに装填されたフィルムが
フィルム感度情報読み取り手段によってフィルム無し時
と判別不能な場合であっても、背蓋が閉じている場合に
撮影動作の完了に伴ってフィルム巻き上げ動作を行な
い、フィルム送り量検出手段からフィルムの巻き上げに
対応した信号が出力されると所定量フィルムを送るよう
に構成することにより、撮影者に煩わしい操作を強いる
ことなく、かつ、余分なフィルム自動送り動作を行なわ
ず、また、フィルムが正常に送られなければ、撮影動作
を禁止して撮影者に適確に警告することができる。カメ
ラのフィルム給送装置を提供するものである。
Therefore, in the present invention, the state determination means of the back cover, the electric film feeding means and the film feed amount detecting means are provided, and the film loaded in the camera is read by the film sensitivity information reading means. Even if it cannot be distinguished from the absence of film, the film winding operation is performed when the shooting operation is completed and the film feed amount detection means outputs a signal corresponding to the film winding, when the back cover is closed. By configuring to feed a predetermined amount of film, the photographer is not required to perform a troublesome operation, the extra automatic film feeding operation is not performed, and the filming operation is performed if the film is not fed normally. It can be prohibited and the photographer can be warned appropriately. A film feeding device for a camera is provided.

【0010】[0010]

【実施例】図1に本発明の一実施例を示す。1は背蓋の
開閉に応じて変化するSWであり、ここでは開でon
(Hレベル)、閉でoff(Lレベル)としている。給
送制御回路2でこの信号がLレベルだと、フィルム給送
用のモーター4への通電は行なわない。この例では、フ
ィルムの感度情報をISO3〜1の3本の接片SWで読
み取り、これらのSWの内少なくとも1本が導通状態で
あれば、インバータ5〜7、ORゲート8を介してフィ
ルム有り信号FILMがHレベルとなる構成になってい
る。このFILM端子がHレベルであり、かつ、背蓋S
W信号がoffであることを給送制御手段2が検出する
と、モーター4への通電を開始し、フィルム送り量検出
手段9からの信号を監視して、所定量(多くの場合3〜
4駒分)のフィルムを巻き上げたところでフィルム停止
処理を行なう。これは、図3に示した従来例と同様であ
る。
FIG. 1 shows an embodiment of the present invention. 1 is a switch that changes according to the opening and closing of the back lid, and here it is open and on
(H level) and closed (L level). If this signal is L level in the feeding control circuit 2, the film feeding motor 4 is not energized. In this example, the sensitivity information of the film is read by the three contact pieces SW of ISO 3-1 and if at least one of these SW is in the conductive state, the film is present through the inverters 5-7 and the OR gate 8. The signal FILM is set to the H level. This FILM terminal is at H level, and the back lid S
When the feed control means 2 detects that the W signal is off, the motor 4 is started to be energized, and the signal from the film feed amount detection means 9 is monitored to detect a predetermined amount (in many cases, 3 to
The film stop processing is performed when the film of 4 frames is wound up. This is similar to the conventional example shown in FIG.

【0011】一方、ISO3〜1の接片SWが全てof
fである場合、露出制御手段10からの撮影動作完了信
号AE_ANDが給送制御回路2に入力されると、モー
ター4への通電が開始され、フィルム送り量検出手段9
からの信号を監視する。そして、少なくともフィルム給
送状態検出手段9が検出可能なフィルム移動量以上の検
出信号を出力すると、信号変化カウンタ11の出力信号
FILMがアクティブになる。このFILM信号とIS
O3〜1のSW信号を入力信号とするANDゲート12
の出力信号がHレベルになる。このANDゲート12の
出力信号は給送制御回路2に入力され、この信号がアク
ティブであれば、更に所定量フィルム送り動作を行な
う。また、この動作はANDゲート12の出力がアクテ
ィブの場合のみ行なわれる。
On the other hand, all the contact pieces SW of ISO3 to 1 are of
In the case of f, when the photographing operation completion signal AE_AND from the exposure control means 10 is input to the feeding control circuit 2, the motor 4 is started to be energized and the film feed amount detection means 9
Monitor the signal from. When at least a detection signal equal to or larger than the film movement amount that can be detected by the film feeding state detection means 9 is output, the output signal FILM of the signal change counter 11 becomes active. This FILM signal and IS
AND gate 12 having the SW signal of O3-1 as the input signal
Output signal becomes H level. The output signal of the AND gate 12 is input to the feeding control circuit 2, and if this signal is active, the film feeding operation is further performed by a predetermined amount. Further, this operation is performed only when the output of the AND gate 12 is active.

【0012】このようにすれば、フィルム感度読取手段
で検出不能なフィルムであっても、フィルムを装填した
後で撮影者が1回撮影動作を行なえば、撮影可能な所定
位置までフィルムを自動的に給送することができる。し
かも、実際にフィルムが装填されていない場合には、上
述の信号変化カウンタ11の出力信号FILMはアクテ
ィブにならないので、ANDゲート12の出力信号もア
クティブにならず、所定の、例えば0.5秒程度の時間
が経過するとタイマ13から給送制御回路へ出力され、
これを受けてモーターへの通電も停止される。従って、
余分な長時間の通電を行なう必要もない。
With this arrangement, even if the film cannot be detected by the film sensitivity reading means, if the photographer performs one photographing operation after loading the film, the film is automatically moved to a predetermined photographing position. Can be delivered to. Moreover, when the film is not actually loaded, the output signal FILM of the signal change counter 11 described above does not become active, so that the output signal of the AND gate 12 does not become active either, and the output signal FILM has a predetermined value, for example, 0.5 seconds. When a certain amount of time has passed, the timer 13 outputs to the feeding control circuit,
In response to this, the power supply to the motor is also stopped. Therefore,
There is no need to energize for an extra long time.

【0013】また、ANDゲート12の出力がアクティ
ブな場合で更にフィルム送り動作を行なった場合に、万
一所定量フィルムを送れなかった場合には、所定時間
(例えば3秒)でタイマ14の出力がHレベルになり、
この信号とANDゲート12の出力を入力信号とするA
NDゲート15の出力がアクティブになり、これがOR
ゲート16に入力されると、撮影操作SW17の状態変
化が露出制御手段10に入力されなくなるため、撮影動
作が禁止される。こうして、正常にフィルムが送られな
いと撮影動作を受付なくなるように構成されているの
で、フィルムが正常に所定位置にないにも拘らず、撮影
者が撮影を行なっていると誤判断する事故も防ぐことが
出来る。
Further, when the output of the AND gate 12 is active and the film is further fed, if the film cannot be fed by a predetermined amount, the output of the timer 14 is output for a predetermined time (for example, 3 seconds). Becomes H level,
This signal and the output of the AND gate 12 are input signals A
The output of the ND gate 15 becomes active and this is OR
When input to the gate 16, the change in the state of the shooting operation SW 17 is not input to the exposure control unit 10, so the shooting operation is prohibited. In this way, if the film is not normally fed, the photographing operation is not accepted, and therefore, even if the film is not normally in the predetermined position, the photographer may mistakenly judge that the filming is being performed. It can be prevented.

【0014】なお、この撮影動作の禁止信号(ORゲー
ト16)は、背蓋SW信号がonであれば、ANDゲー
ト12、タイマの出力信号はリセットされる。従って、
背蓋を一度開ければ、撮影動作の禁止状態は解除され
る。
The output signal of the AND gate 12 and the timer is reset as the prohibition signal (OR gate 16) of the photographing operation when the back cover SW signal is on. Therefore,
Once the back lid is opened, the prohibition state of the shooting operation is released.

【0015】[他の実施事例]以上で述べてきた実施例
は、フィルム感度情報読み込みSWと背蓋SWと論理ゲ
ートを組み合わせて構成しているが、近年よく用いられ
ているマイクロプロセッサを集中制御回路として用いる
ならば、図2に示すようなフローチャートに従うソフト
ウエア(プログラム)をマイクロプロセッサのROMに
組み込むことによっても実現できる。
[Other Embodiments] The embodiments described above are constructed by combining the film sensitivity information reading SW, the back cover SW, and the logic gate, but the microprocessor which has been widely used in recent years is centrally controlled. When used as a circuit, it can also be realized by incorporating software (program) according to the flowchart shown in FIG. 2 into the ROM of the microprocessor.

【0016】このフローチャートの説明は省略する。The description of this flowchart is omitted.

【0017】[0017]

【発明の効果】以上述べてきたように、本発明では、背
蓋の状態判別手段と電動式のフィルム給送手段とフィル
ム送り量検出手段を設け、カメラに装填されたフィルム
がフィルム感度情報読み取り手段によってフィルム無し
時と判別不能な場合であっても、背蓋が閉じている場合
に撮影動作の完了に伴ってフィルム巻き上げ動作を行な
い、フィルム送り量検出手段からフィルムの巻き上げに
対応した信号が出力されると所定量フィルムを送るよう
に構成したので、カメラに装填されたフィルムがフィル
ム感度情報読み取り手段によってフィルム無し時と判別
不能な場合であっても撮影者に煩わしい操作を強いるこ
となく、かつ、余分なフィルム自動送り動作を行なわ
ず、また、フィルムが正常に送られなければ、撮影動作
を禁止して撮影者に適確に警告することができる、カメ
ラのフィルム給送装置を実現することができた。
As described above, in the present invention, the state determination means of the back cover, the electric film feeding means and the film feeding amount detecting means are provided, and the film loaded in the camera reads the film sensitivity information. Even if it is not possible to determine the absence of film by the means, the film winding operation will be performed when the shooting operation is completed when the back cover is closed, and a signal corresponding to film winding will be output from the film feed amount detection means. Since it is configured to send a predetermined amount of film when output, even if the film loaded in the camera is indistinguishable from the absence of film by the film sensitivity information reading means, without forcing the photographer to perform a troublesome operation, In addition, if the film is not fed normally without the extra automatic film feeding operation, the shooting operation is prohibited and the photographer is Can alert the probability, we were possible to realize a film feeding device for a camera.

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

【図1】本発明の一実施例のフィルム給送装置の制御系
の該略図。
FIG. 1 is a schematic diagram of a control system of a film feeding apparatus according to an embodiment of the present invention.

【図2】図1に示された構成において行なわれる動作を
ソフトウェアで実現する場合ののフローチャート。
FIG. 2 is a flowchart for realizing the operation performed in the configuration shown in FIG. 1 by software.

【図3】従来例の制御系の概略図。FIG. 3 is a schematic diagram of a conventional control system.

【符号の説明】[Explanation of symbols]

1…背蓋SW 2…給送制御装置 4…給送モータ 5〜7…インバータ 8…ORゲート 9…給送量検出手段 10…露出制御装置 17…撮影SW DESCRIPTION OF SYMBOLS 1 ... Back cover SW 2 ... Feed control device 4 ... Feed motor 5-7 ... Inverter 8 ... OR gate 9 ... Feed amount detection means 10 ... Exposure control device 17 ... Shooting SW

Claims (1)

【特許請求の範囲】 【請求項1】 背蓋の状態判別手段と、電動式フィルム
給送手段と、フィルム送量検出手段と、カメラに装填さ
れたフィルムの感度情報読み取り手段と、を有したフィ
ルム給送装置において、カメラに装填されたフィルムが
前記フィルム感度情報読み取り手段によってフィルム無
し時と判別不能な場合であって、かつ背蓋の状態判別手
段から背蓋が閉じている場合に対応した信号が出力され
ている場合において、撮影動作の完了に伴って前記電動
式フィルム給送手段によりフィルムの巻き上げ動作を行
ない、少なくとも前記フィルム送り量検出手段が検出可
能なフィルム移動量以上の検出信号を出力すると、所定
量フィルムを送るように構成されたカメラのフィルム給
送装置。
Claim: What is claimed is: 1. A back lid state determining means, an electric film feeding means, a film feeding amount detecting means, and a sensitivity information reading means of a film loaded in a camera. In the film feeding device, the case where the film loaded in the camera cannot be discriminated by the film sensitivity information reading means from the absence of the film and the back lid is closed from the back lid state determining means is dealt with. In the case where the signal is output, the film winding operation is performed by the electric film feeding means upon completion of the photographing operation, and at least a detection signal equal to or more than the film movement amount detectable by the film feeding amount detection means is detected. A film feed device for a camera configured to feed a predetermined amount of film when output.
JP3164611A 1991-07-04 1991-07-04 camera Expired - Fee Related JP2825686B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3164611A JP2825686B2 (en) 1991-07-04 1991-07-04 camera

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3164611A JP2825686B2 (en) 1991-07-04 1991-07-04 camera

Publications (2)

Publication Number Publication Date
JPH0511327A true JPH0511327A (en) 1993-01-22
JP2825686B2 JP2825686B2 (en) 1998-11-18

Family

ID=15796481

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3164611A Expired - Fee Related JP2825686B2 (en) 1991-07-04 1991-07-04 camera

Country Status (1)

Country Link
JP (1) JP2825686B2 (en)

Also Published As

Publication number Publication date
JP2825686B2 (en) 1998-11-18

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