JP2005141269A - Film transfer preventing mechanism and film unit equipped with lens - Google Patents

Film transfer preventing mechanism and film unit equipped with lens Download PDF

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JP2005141269A
JP2005141269A JP2005041227A JP2005041227A JP2005141269A JP 2005141269 A JP2005141269 A JP 2005141269A JP 2005041227 A JP2005041227 A JP 2005041227A JP 2005041227 A JP2005041227 A JP 2005041227A JP 2005141269 A JP2005141269 A JP 2005141269A
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film
photographic
photographic film
unit
passage
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Osamu Noguchi
修由 野口
Hiroshi Sakata
弘 坂田
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Fujifilm Holdings Corp
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Fuji Photo Film Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To improve the quality of an image by preventing film transfer during exposure. <P>SOLUTION: In a film entrance 78a on the side next to a patrone holding chamber 76 in a film passage 78 going through the patrone holding chamber 76 of a film unit 75 with a lens and a film roll chamber 77, a pair of teremps 79a and 79b stretching to the widthwise direction of a picture film 22 are fixed on a back cover 81 and a body base 82 respectively so as to hold the picture film 22 from front and back. A pair of teremps 84a and 84b are installed in the film entrance 78b on the side next to the film roll chamber 77 of the film passage 78. Consequently, the picture film 22 set in the position of exposure is stabilized even in the case of shock caused by shutter's opening and closing, thus preventing the inferior quality of the picture due to the film transfer. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、露光中のフイルム移動を防止したフイルム移動防止機構及びこれを備えたレンズ付きフイルムユニットに関するものである。   The present invention relates to a film movement preventing mechanism that prevents film movement during exposure, and a lens-fitted photo film unit including the same.

簡単な露光機構を備えるとともに、予め未露光の写真フイルムとパトローネとが製造時に装填され、面倒なフイルム装填と巻戻し操作を不要にしたレンズ付きフイルムユニットとして、例えば「写ルンですSuper800(商品名)」等が本出願人より製造販売されている。このようなレンズ付きフイルムユニットでは、撮影ごとにパトローネのスプールに係合された巻上げノブを回転操作して露光済みの写真フイルムをパトローネ内に巻き上げ、このときの写真フイルムの移送を利用してシャッタチャージを行なった後、露光機構の係止レバーが巻上げノブの外周に形成された歯列に係合して巻上げノブのそれ以上の回転を阻止するようにしてある。   A film unit with a lens that has a simple exposure mechanism and is pre-loaded with unexposed photographic film and cartridges at the time of manufacture, eliminating the need for troublesome film loading and rewinding operations. ) "Etc. are manufactured and sold by the applicant. In such a lens-fitted photo film unit, an exposed photographic film is wound up in the patrone by rotating the winding knob engaged with the patrone spool each time shooting is performed, and the shutter of the photographic film is transferred by using the transfer of the photographic film at this time. After charging, the locking lever of the exposure mechanism engages with a tooth row formed on the outer periphery of the winding knob to prevent further rotation of the winding knob.

また、このようなフイルム巻上げ機構では、フイルム巻上げ操作の際に、巻上げノブをフイルム巻上げ方向とは逆の方向に回転操作すると、露光済みのコマがパトローネから引き出されてしまうため、巻上げノブの逆転操作を阻止する逆転操作防止機構が設けられている。この機構は、巻上げノブの外周に形成された歯列と、歯列に弾性自在に係合する逆転防止爪とから構成されている。この逆転防止爪は、巻上げノブのフイルム巻上げ方向への正転操作の際には弾性変形してその回転を許容し、また巻上げノブの逆転操作の際には歯列の谷に入り込んでその回転を阻止する。   Also, in such a film winding mechanism, when the film winding operation is performed, if the winding knob is rotated in the direction opposite to the film winding direction, the exposed frame is pulled out from the cartridge. A reverse operation preventing mechanism for preventing the operation is provided. This mechanism is composed of a tooth row formed on the outer periphery of the winding knob and a reverse rotation preventing claw that elastically engages the tooth row. The reversing prevention pawl elastically deforms to allow its rotation when the winding knob is rotated forward in the film winding direction, and enters the trough of the dentition when rotating the winding knob. To prevent.

一方、非特許文献1にも紹介されたAPS(Advanced Photo System )では、従来より小型化したパトローネ内により多くの撮影コマ数(例えば40コマ)を確保した写真フイルムを収納するため、このフイルムベースとして厚みを薄くしても剛性が高く十分な強度を有するアニールドポリエチレンナフタレート(A−PEN)を用いることが提案されている。
雑誌「写真工業」((株)写真工業出版社 1994年12月号 p.11 )
On the other hand, in the Advanced Photo System (APS) introduced in Non-Patent Document 1, this film base is used to store a photographic film having a larger number of frames (for example, 40 frames) in a smaller patrone. It has been proposed to use annealed polyethylene naphthalate (A-PEN) having high rigidity and sufficient strength even when the thickness is reduced.
Magazine "Photographic Industry" (Photographic Publishing Co., Ltd. December 1994 issue p.11)

ところが、上記のような新タイプの写真フイルムをレンズ付きフイルムユニットに用いた場合、撮影中に時として画面ブレが発生することが分かった。この原因としては、種々のケースが考えられる。例えば写真フイルムを巻き上げる際に写真フイルムに引っ張り力がかかっており、これが巻止め機構によって溜められた状態になっている。そして、レリーズ操作と同時に巻止めが解除されるから、この瞬間に写真フイルムにかかっていた引っ張り力が弛み、剛性が強い写真フイルムが振動する。   However, it has been found that when a new type of photographic film as described above is used in a lens-fitted photo film unit, screen blur sometimes occurs during shooting. There are various possible causes for this. For example, when a photographic film is rolled up, a tensile force is applied to the photographic film, and this is in a state where it is stored by a winding stop mechanism. Since the winding stop is released simultaneously with the release operation, the pulling force applied to the photographic film at this moment is loosened, and the photographic film having high rigidity vibrates.

また、シャッタチャージ時には、巻上げノブと従動スプロケットとの間の写真フイルムにはテンションがかかった状態になっており、これがレリーズ操作の瞬間に解除されると、剛性が強い写真フイルムが元のカール状態に戻ろうとするカール収縮が発生して振動する。また、シャッタチャージ時の巻上げノブの回転位置によっては、巻上げノブの歯列と逆転防止爪との噛み合わせにより、逆転防止爪が巻上げノブを巻上げ方向に回転させる方向に付勢する状態になる場合がある。このような状態のままレリーズ操作を行なうと、巻止めが解除された瞬間に写真フイルムがパトローネ側に移動して画面ブレが発生する。   Also, when the shutter is charged, the photographic film between the winding knob and the driven sprocket is in tension, and when this is released at the moment of the release operation, the rigid photographic film is in its original curled state. The curl contraction that tries to return to the position occurs and vibrates. Also, depending on the rotation position of the winding knob during shutter charging, the reverse rotation prevention claw may be biased in the direction of rotating the winding knob in the winding direction due to the meshing of the winding knob tooth row and the reverse rotation prevention claw. There is. If the release operation is performed in such a state, the photographic film moves to the patrone side at the moment when the winding is released, and screen blurring occurs.

また、新タイプのパトローネは、フイルム出入口に従来のようなテレンプを用いずに、回転式の遮光蓋を用いている。このため、遮光蓋が開き、写真フイルムがフイルム出入口から突出した状態では、フイルム出入口の開口サイズの範囲で写真フイルムが自由に移動可能となっている。したがって、シャッタ羽根の揺動に伴うショック等によって露光中の写真フイルムが動くことがある。   In addition, the new type of cartridge uses a rotating light-shielding lid without using a conventional temperament at the film entrance. For this reason, when the light shielding lid is opened and the photographic film protrudes from the film entrance, the photographic film can freely move within the range of the opening size of the film entrance. Therefore, the photographic film being exposed may move due to a shock caused by the swing of the shutter blades.

本発明は、上記課題を解決するためになされたもので、露光中のフイルム移動を防止して画質を向上させたフイルム移動防止機構及びレンズ付きフイルムユニットを提供することを目的とする。   The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a film movement prevention mechanism and a lens-fitted film unit that improve the image quality by preventing film movement during exposure.

本発明のフイルム移動防止機構は、フイルムベースにアニールドポリエチレンナフタレート(A−PEN)を用いた写真フイルムを装填するとともに、この写真フイルムを露光位置に案内するフイルム通路を備えたカメラのフイルム移動防止機構において、前記フイルム通路に設けられ、少なくとも写真フイルムへの露光中にフイルム通路にセットされた写真フイルムの面をほぼ垂直方向に押さえ、露光中のフイルム移動を防止することを特徴とする。   The film movement preventing mechanism of the present invention is a camera film movement having a film passage for guiding a photographic film to an exposure position while loading a photographic film using annealed polyethylene naphthalate (A-PEN) on the film base. The prevention mechanism is characterized in that it is provided in the film passage, and at least the surface of the photographic film set in the film passage is pressed in a substantially vertical direction during exposure of the photographic film to prevent movement of the film during exposure.

本発明のレンズ付きフイルムユニットは、フイルムベースにアニールドポリエチレンナフタレート(A−PEN)を用いた写真フイルムを予め装填するとともに、シャッタボタンのレリーズ操作により写真フイルムに露光を与える露光ユニットと、パトローネを収納するパトローネ室と、一端が前記パトローネのスプールに係止された前記写真フイルムをロール状に収納するフイルムロール室と、パトローネ室とフイルムロール室とを連絡するフイルム通路とが設けられたレンズ付きフイルムユニットにおいて、前記フイルム通路に少なくも写真フイルムへの露光中は写真フイルムを押さえて写真フイルムの振動を抑止するフイルム押さえ手段を設けたことを特徴とする。   The lens-fitted photo film unit of the present invention includes an exposure unit that pre-loads a photographic film using annealed polyethylene naphthalate (A-PEN) on a film base and exposes the photographic film by a shutter button release operation, and a cartridge. A cartridge chamber for storing the film, a film roll chamber for storing the photographic film, one end of which is locked to the spool of the cartridge, in a roll shape, and a film passage for connecting the cartridge chamber and the film roll chamber. The attached film unit is characterized in that a film pressing means is provided in the film passage for suppressing the vibration of the photographic film by pressing the photographic film during exposure to the photographic film.

また、前記フイルム押さえ手段は、前記フイルム通路のパトローネ室側及びフイルムロール室側の各フイルム出入口に設けられ、前記写真フイルムの表面及び裏面にそれぞれ接触するように写真フイルムの幅方向に延びた一対のテレンプであることを特徴とする。   Further, the film pressing means is provided at each film inlet / outlet on the cartridge chamber side and the film roll chamber side of the film passage, and extends in the width direction of the photographic film so as to come into contact with the front and back surfaces of the photographic film, respectively. It is characterized by being a telemp.

本発明のフイルム移動防止機構によれば、少なくとも写真フイルムへの露光中にフイルム通路にセットされた写真フイルムの面をほぼ垂直方向に押さえるようにしたので、露光中のフイルム移動を防止できる。   According to the film movement preventing mechanism of the present invention, since the surface of the photographic film set in the film passage is pressed almost vertically during exposure of the photographic film, movement of the film during exposure can be prevented.

本発明のレンズ付きフイルムユニットによれば、フイルム通路に少なくも写真フイルムへの露光中は写真フイルムを押さえて写真フイルムの振動を抑止するフイルム押さえ手段を設けたので、撮影時のフイルム移動を防止できる。また、フイルム押さえ手段として、写真フイルムの幅方向に延びた一対のテレンプを用い、これをフイルム通路のパトローネ室側及びフイルムロール室側の各フイルム出入口に設けたので、簡単かつローコストにフイルム移動を防止できる。   According to the lens-fitted photo film unit of the present invention, the film passage means is provided in the film passage to suppress the vibration of the photographic film by pressing the photographic film during the exposure to the photographic film, so that the film movement during the photographing is prevented. it can. In addition, a pair of telems extending in the width direction of the photographic film are used as the film pressing means, and these are provided at the entrances and exits of the film chamber side and the film roll chamber side of the film passage, so that the film can be moved easily and at low cost. Can be prevented.

本発明の実施形態を示す図1において、レンズ付きフイルムユニット75のパトローネ収納室76とフイルムロール室77との間を連絡するフイルム通路78のパトローネ収納室76と近接する側のフイルム出入口78aには、写真フイルム22の幅方向に延びた一対のテレンプ79a,79bが、写真フイルム22を表裏から押さえるように、後カバー81,本体基部82にそれぞれ固着して設けられている。また、同様に、フイルム通路78のフイルムロール室77と近接する側のフイルム出入口78bには、一対のテレンプ84a,84bが設けられている。これにより、露光位置にセットされた写真フイルム22はシャッタ開閉時のショック等でも安定しており、フイルム移動による画質の劣化が防止される。   In FIG. 1 showing the embodiment of the present invention, the film entrance / exit 78a on the side adjacent to the cartridge storage chamber 76 of the film passage 78 that communicates between the cartridge storage chamber 76 and the film roll chamber 77 of the lens-fitted film unit 75 is shown in FIG. A pair of telems 79a and 79b extending in the width direction of the photographic film 22 are fixed to the rear cover 81 and the main body base 82 so as to hold the photographic film 22 from the front and back sides. Similarly, a pair of telems 84a and 84b are provided at the film entrance / exit 78b of the film passage 78 on the side close to the film roll chamber 77. As a result, the photographic film 22 set at the exposure position is stable even by a shock at the time of opening and closing the shutter, and the deterioration of the image quality due to the movement of the film is prevented.

以上説明した実施形態では、フイルム押さえ手段としてテレンプを用いたが、例えば少なくとも巻上げ方向への給送時には写真フイルムに傷をつけないように写真フイルムの面をほぼ垂直方向に本体基部側に押しつける板バネをフイルム通路に設けてもよい。   In the embodiment described above, the telemp is used as the film pressing means. However, for example, a plate that presses the surface of the photographic film almost vertically to the base of the main body so as not to damage the photographic film at least when fed in the winding direction. A spring may be provided in the film passage.

また、上記実施形態は、新規な写真フイルムパトローネを装填したレンズ付きフイルムユニットであったが、従来の135タイプのパトローネとA−PENベースの写真フイルムを装填したレンズ付きフイルムユニットでもよい。また、本発明のフイルム移動防止機構は、コンパクトタイプ等のカメラに適用することができる。   In the above embodiment, the film unit with a lens loaded with a novel photographic film cartridge is used, but a film unit with a lens loaded with a conventional 135 type cartridge and an A-PEN-based photographic film may be used. The film movement prevention mechanism of the present invention can be applied to a compact type camera or the like.

本発明の実施形態の要部説明図である。It is principal part explanatory drawing of embodiment of this invention.

符号の説明Explanation of symbols

17 写真フイルムパトローネ
22 写真フイルム
75 レンズ付きフイルムユニット
79a,79b,84a,84b テレンプ
17 Photo film cartridge 22 Photo film 75 Lens unit with lens 79a, 79b, 84a, 84b Telemp

Claims (3)

フイルムベースにアニールドポリエチレンナフタレート(A−PEN)を用いた写真フイルムを装填するとともに、この写真フイルムを露光位置に案内するフイルム通路を備えたカメラのフイルム移動防止機構において、
前記フイルム通路に設けられ、少なくとも写真フイルムへの露光中にフイルム通路にセットされた写真フイルムの面をほぼ垂直方向に押さえ、露光中のフイルム移動を防止することを特徴とするフイルム移動防止機構。
In a film movement prevention mechanism of a camera having a film passage for guiding a photographic film to an exposure position while loading a photographic film using annealed polyethylene naphthalate (A-PEN) on a film base.
A film movement preventing mechanism provided in the film path, wherein at least a surface of the photographic film set in the film path is pressed in a substantially vertical direction during exposure of the photographic film to prevent film movement during exposure.
フイルムベースにアニールドポリエチレンナフタレート(A−PEN)を用いた写真フイルムを予め装填するとともに、シャッタボタンのレリーズ操作により写真フイルムに露光を与える露光ユニットと、パトローネを収納するパトローネ室と、一端が前記パトローネのスプールに係止された前記写真フイルムをロール状に収納するフイルムロール室と、パトローネ室とフイルムロール室とを連絡するフイルム通路とが設けられたレンズ付きフイルムユニットにおいて、
前記フイルム通路に少なくも写真フイルムへの露光中は写真フイルムを押さえて写真フイルムの振動を抑止するフイルム押さえ手段を設けたことを特徴とするレンズ付きフイルムユニット。
An photographic film using annealed polyethylene naphthalate (A-PEN) is loaded in advance on the film base, an exposure unit for exposing the photographic film by a shutter button release operation, a cartridge chamber for storing the cartridge, and one end In the film unit with a lens provided with a film roll chamber for storing the photographic film, which is locked to the spool of the cartridge, in a roll shape, and a film passage for connecting the cartridge chamber and the film roll chamber.
A film-fitted photo film unit comprising a film pressing means for pressing a photographic film to suppress vibration of the photographic film during exposure to the photographic film at least in the film passage.
前記フイルム押さえ手段は、前記フイルム通路のパトローネ室側及びフイルムロール室側の各フイルム出入口に設けられ、前記写真フイルムの表面及び裏面にそれぞれ接触するように写真フイルムの幅方向に延びた一対のテレンプであることを特徴とする請求項2記載のレンズ付きフイルムユニット。
The film pressing means is provided at a film chamber side and a film roll chamber side of the film passage, and a pair of telems extending in the width direction of the photographic film so as to contact the front and back surfaces of the photographic film, respectively. The film unit with a lens according to claim 2, wherein the film unit is a lens unit.
JP2005041227A 2005-02-17 2005-02-17 Film transfer preventing mechanism and film unit equipped with lens Pending JP2005141269A (en)

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JP2005041227A JP2005141269A (en) 2005-02-17 2005-02-17 Film transfer preventing mechanism and film unit equipped with lens

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JP01668596A Division JP3665124B2 (en) 1996-02-01 1996-02-01 Film movement prevention mechanism and film unit with lens

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