JPH05297490A - Silver halide photographic sensitive material with which image quality and gradation are selectable so as to meet purpose of photographing and its image forming method - Google Patents
Silver halide photographic sensitive material with which image quality and gradation are selectable so as to meet purpose of photographing and its image forming methodInfo
- Publication number
- JPH05297490A JPH05297490A JP16295792A JP16295792A JPH05297490A JP H05297490 A JPH05297490 A JP H05297490A JP 16295792 A JP16295792 A JP 16295792A JP 16295792 A JP16295792 A JP 16295792A JP H05297490 A JPH05297490 A JP H05297490A
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- Prior art keywords
- density
- maximum density
- sensitivity
- fog
- intensifying screen
- 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.)
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Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、１種類のフィルムで撮
影目的に合わせた特性を得ることができるＸ線用ハロゲ
ン化銀写真感光材料及びその画像形成方法に関するもの
である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a silver halide photographic light-sensitive material for X-rays and a method for forming an image thereof, which enables one type of film to obtain characteristics suited to the purpose of photography.
【０００２】[0002]
【発明の背景】現在、医療用の直接撮影用Ｘ線フィルム
は撮影部位や目的に応じて数多くの品種が販売されてい
る。例えばコニカ〔株〕の例を挙げると一般用としてSR
-G 、造影撮影などの高感度用としてSR-V、高コントラ
スト用としてSR-Hや、SR-HG、消化器撮影用として低コ
ントラストのSR-L、胸部撮影用としてワイドラチュード
用のSR-C、さらに***撮影などの超高鮮鋭性が求められ
る部位用としてはnew-CMなど（以上いづれもコニカ
〔株〕の商品名）数多くの品種を揃えている。BACKGROUND OF THE INVENTION Currently, a large number of types of X-ray films for direct imaging for medical use are sold depending on the site and purpose of imaging. For example, to give an example of Konica Corporation, SR for general use
-G, SR-V for high sensitivity such as contrast imaging, SR-H and SR-HG for high contrast, low contrast SR-L for gastrointestinal imaging, SR-for wide latitude for chest imaging For C, and for parts that require ultra-high sharpness such as mammography, we have a large number of varieties such as new-CM (all of which are product names of Konica Corporation).
【０００３】このように数多くのフィルム品種を、それ
ぞれ撮影用途別に取り揃えることは、使用者の在庫管理
が非常に繁雑なばかりでなく、フィルム品種を誤って使
用する危険性もあり、その場合には診断に重大な障害を
及ぼす結果となる。As described above, assembling a large number of film types for each shooting purpose not only makes the user's inventory management very complicated, but also has the risk of erroneously using the film type. In that case, This results in serious damage to the diagnosis.
【０００４】またフィルムメーカー側及び販売側として
も、このような多品種を製造、販売することはコストア
ップや物流を困難にすることから好ましいことではな
く、その改善が強く望まれていた。Also, on the film manufacturer side and the sales side, it is not preferable to manufacture and sell such a large variety of products because it increases costs and makes distribution difficult, and improvement thereof has been strongly desired.
【０００５】[0005]
【発明の目的】従って本発明の第一の目的は、１種類の
フィルムで撮影目的に合わせた特性を得ることができる
Ｘ線用ハロゲン化銀写真感光材料を提供することであ
る。SUMMARY OF THE INVENTION It is, therefore, a first object of the present invention to provide a silver halide photographic light-sensitive material for X-rays, which can obtain the characteristics suited to the purpose of photographing with one kind of film.
【０００６】本発明の第二の目的は、フィルムの両面に
用いるフロント用とバック用の２枚の増感紙のそれぞれ
の組み合わせを変えることにより高感度で、高鮮鋭性の
画像が得られるＸ線用ハロゲン化銀写真感光材料および
その画像形成方法を提供することである。その他の目的
は以下の明細から明らかとなる。A second object of the present invention is to obtain an image with high sensitivity and high sharpness by changing the combination of two front and back intensifying screens used on both sides of the film. A silver halide photographic light-sensitive material for lines and an image forming method thereof. Other objects will be apparent from the following specification.
【０００７】[0007]
【発明の構成】本発明者等は鋭意検討の結果、これらの
目的が以下により達成されることを見いだし本発明を成
すに至った。As a result of intensive studies, the present inventors have found that these objects can be achieved by the following, and have completed the present invention.
【０００８】即ち、 （１）透明支持体の両面に有する乳剤面のそれぞれから
形成された画像の最高濃度が異なり、最高濃度の高い面
の最高濃度は1.80以上であり、該最高濃度の高い面側か
ら現像後の最高濃度の高い面の濃度がカブリ＋1.10の濃
度となる露光量で露光した場合に、最高濃度の低い面の
濃度がカブリ＋0.20以下であるハロゲン化銀写真感光材
料であり、最高濃度が高い面の感度（ＳH）が裏面
（ＳL）より低感度であり、最高濃度の高い面側から蛍
光増感紙を用いて露光した場合の最高濃度の高い面のカ
ブリ＋0.5の濃度とカブリ＋1.3の濃度の２点を結ぶ直線
のコントラスト（ＧH）が1.50以上、2.90以下であり、
最高濃度の低い面から蛍光増感紙を用いて露光した場合
の最高濃度の低い面の特性曲線のカブリ＋0.3の濃度と
カブリ＋0.6の濃度の２点を結ぶ直線のコントラストが
1.10以上であるハロゲン化銀写真感光材料。That is, (1) the maximum density of the image formed from the emulsion surfaces on both sides of the transparent support is different, and the maximum density of the surface with the highest density is 1.80 or more. The silver halide photographic light-sensitive material in which the density of the surface with the lowest maximum density is fog +0.20 or less when exposed from the side so that the density of the surface with the highest density becomes fog + 1.10. The sensitivity ( SH ) of the surface with the highest maximum density is lower than that of the back surface ( SL ), and the sensitivity of the surface with the highest density when exposed using a fluorescent intensifying screen from the side with the highest density is high. The contrast ( GH ) of the straight line connecting the two points of fog +0.5 density and fog +1.3 density is 1.50 or more and 2.90 or less,
The contrast of the straight line connecting the two points of fog +0.3 density and fog +0.6 density of the characteristic curve of the surface with the lowest maximum density when exposed with a fluorescent screen from the surface with the lowest maximum density is
A silver halide photographic light-sensitive material which is 1.10 or more.
【０００９】ＳH、ＳLともに次の式の濃度を得るのに必
要な露光量の逆数として求めた値である。Both S H and S L are values obtained as the reciprocal of the exposure amount required to obtain the density of the following equation.
【００１０】 [（最高濃度−カブリ濃度）×0.4］＋カブリ濃度 （２）前記最高濃度の高い面から蛍光増感紙を用いて露
光した場合の最高濃度の低い面の感度ＳL′と、該最高
濃度の低い面から蛍光増感紙を用いて露光した場合の感
度ＳLの比である（ＳL′／ＳL）値が0.12以上である
（１）記載のハロゲン化銀写真感光材料。[(Maximum density-fog density) × 0.4] + fog density (2) Sensitivity S L ′ of the surface having the lowest maximum density when exposed from the surface having the highest maximum density using a fluorescent intensifying screen, The silver halide photographic light-sensitive material according to (1), wherein the (S L ′ / S L ) value, which is the ratio of the sensitivity S L when exposed using a fluorescent intensifying screen from the surface having the lowest maximum density, is 0.12 or more. ..
【００１１】（３）前記最高濃度の高い面から蛍光増感
紙を用いて露光した場合の最高濃度の低い面の感度
ＳL′と、該最高濃度の低い面から蛍光増感紙を用いて
露光した場合の感度ＳLの比（ＳL′／ＳL）が0.12以上
であり、前記最高濃度の低い面から蛍光増感紙を用いて
露光した場合の最高濃度の高い面の感度ＳH′と、該最
高濃度の高い面から蛍光増感紙を用いて露光した場合の
感度ＳHの比（ＳH′／ＳH）が0.35以下である（２）記
載のハロゲン化銀写真感光材料。(3) Sensitivity S L ′ of the surface with the lowest maximum density when exposed with the fluorescent screen from the surface with the highest maximum density, and using the fluorescent screen from the surface with the lowest maximum density The ratio (S L ′ / S L ) of the sensitivity S L when exposed is 0.12 or more, and the sensitivity S H of the surface having the highest maximum density when exposed using a fluorescent intensifying screen from the surface having the lowest maximum density. 'And the sensitivity S H ratio (S H ′ / S H ) when exposed by using a fluorescent intensifying screen from the surface having the highest maximum density is 0.35 or less (2). ..
【００１２】（４）前記最高濃度の高い面のみに蛍光増
感紙を用いて露光した場合に最高濃度の高い面と最高濃
度の低い面の合計で形成する特性曲線が、カブリ＋0.25
の濃度とカブリ＋2.0の濃度の２点を結ぶ直線のコント
ラスト（ＧW）が2.10以上、2.90以下である（２）記載
のハロゲン化銀写真感光材料。(4) The characteristic curve formed by the sum of the surface with the highest maximum density and the surface with the lowest maximum density when the fluorescent intensifying screen is used to expose only the surface with the highest maximum density is the fog +0.25.
The silver halide photographic light-sensitive material according to (2), which has a contrast (G W ) of a straight line connecting two points of the density of 2 and the density of fog +2.0 is 2.10 or more and 2.90 or less.
【００１３】（５）前記最高濃度の高い面のみに蛍光増
感紙を隣接させて露光する（２）記載のハロゲン化銀写
真感光材料の画像形成方法。(5) The method for forming an image of a silver halide photographic light-sensitive material according to (2), wherein the fluorescent intensifying screen is exposed adjacent to only the surface having the highest maximum density.
【００１４】（６）前記（１）又は（２）記載のハロゲ
ン化銀写真感光材料の両面にそれぞれ各１枚の蛍光増感
紙を隣接させて露光する画像形成方法。(6) An image forming method in which one sheet of fluorescent intensifying screen is adjacently exposed on each side of the silver halide photographic light-sensitive material described in (1) or (2) above.
【００１５】（７）前記（３）記載の感光材料の最高濃
度の低い面に高感度蛍光増感紙を隣接させ、最高濃度の
高い面に低感度蛍光増感紙を隣接させて露光するハロゲ
ン化銀写真感光材料の画像形成方法。(7) Halogen which is exposed by adhering a high-sensitivity fluorescent intensifying screen to the surface of the light-sensitive material having the highest density and adjoining a low-sensitivity fluorescent intensifying screen to the surface of the highest density. Image forming method for silver halide photographic light-sensitive material.
【００１６】（８）前記（３）記載の感光材料の最高濃
度の高い面に高感度蛍光増感紙を隣接させ、最高濃度の
低い面に低感度蛍光増感紙を隣接させて露光するハロゲ
ン化銀写真感光材料の画像形成方法。(8) A halogen which is exposed by adhering a high-sensitivity fluorescent intensifying screen to the surface having the highest density and adjoining a low-sensitivity fluorescent intensifying screen to the surface having the lowest maximum density in the light-sensitive material described in (3) above. Image forming method for silver halide photographic light-sensitive material.
【００１７】（９）最高濃度の高い面および最高濃度の
低い面に投影面積の50％以上がアスペクト比３以上の平
板状のハロゲン化銀粒子で形成される乳剤層を有する
（１）、（２）及び（３）記載のハロゲン化銀写真感光
材料。(9) An emulsion layer having tabular silver halide grains having an aspect ratio of 3 or more in 50% or more of the projected area is provided on a surface having a high maximum density and a surface having a low maximum density (1), ( The silver halide photographic light-sensitive material described in 2) and (3).
【００１８】（10）蛍光増感紙の蛍光体としてガドリニ
ウムサルファオキサイド：テルビウム（Ｇd2Ｏ2Ｓ:Ｔ
b）を用いた増感紙を用いた場合に前記最高濃度の高い
面から蛍光増感紙を用いて露光した場合の最高濃度の低
い面の感度ＳL′と、該最高濃度の低い面から蛍光増感
紙を用いて露光した場合の感度ＳLの比（ＳL′／ＳL）
が0.12以上であり、前記最高濃度の低い面から蛍光増感
紙を用いて露光した場合の最高濃度の高い面の感度
ＳH′と、該最高濃度の高い面から蛍光増感紙を用いて
露光した場合の感度ＳHの比（ＳH′／ＳH）が0.35以下
である（４）記載のハロゲン化銀写真感光材料。(10) Gadolinium sulfoxide: terbium (Gd 2 O 2 S: T) as a fluorescent material for fluorescent intensifying screens
When the intensifying screen using b) is used, the sensitivity S L ′ of the surface with the lowest maximum density when exposed with the fluorescent intensifying screen from the surface with the highest maximum density, and Ratio of sensitivity S L when exposed with fluorescent intensifying screen (S L ′ / S L )
Is 0.12 or more, and the sensitivity S H ′ of the surface with the highest maximum density when exposed with the fluorescent screen from the surface with the lowest maximum density, and the sensitivity S H ′ from the surface with the highest maximum density, The silver halide photographic light-sensitive material according to (4), wherein the ratio of sensitivity S H (S H ′ / S H ) when exposed is 0.35 or less.
【００１９】（11）最高濃度の低い面の感度（ＳL）が
最高濃度の高い面の感度（ＳH）よりも1.05倍以上、1.9
0以下である（４）記載のハロゲン化銀写真感光材料。(11) The sensitivity (S L ) of the surface with the lowest maximum density is 1.05 times or more than the sensitivity (S H ) of the surface with the highest maximum density, 1.9
The silver halide photographic light-sensitive material according to (4), which is 0 or less.
【００２０】（12）支持体の両面に少なくとも１層の感
光性ハロゲン化銀乳剤層を有し、かつ支持体の両面の写
真特性が異なる乳剤層を有する感光材料において、支持
体の片側の面の少なくとも１層に、545nmの波長の光よ
りも560nm以上、700nm以下の波長の光に高い吸収を持つ
物質を多く含有するハロゲン化銀写真感光材料。(12) In a light-sensitive material having at least one photosensitive silver halide emulsion layer on both sides of a support and emulsion layers having different photographic characteristics on both sides of the support, one side of the support A silver halide photographic light-sensitive material containing in at least one layer thereof a large amount of a substance having a higher absorption for light having a wavelength of 560 nm or more and 700 nm or less than light having a wavelength of 545 nm.
【００２１】により達成される。Is achieved by
【００２２】以下、本発明を詳述する。The present invention will be described in detail below.
【００２３】１種類のフィルムで、片面撮影（１枚の増
感紙で撮影）と増感紙の組み合わせを変えて両面撮影す
る特性を持たせるには、最高濃度の高い面を透過して最
高濃度の低い面と支持体の界面に到達する光量［＝（Ｓ
L′／ＳL）］が12％以上50％以下であることが好まし
く、特に好ましくは14％以上、35％以下である。In order to have the characteristic of shooting both sides by changing the combination of single-sided shooting (shooting with one intensifying screen) and intensifying screen with one type of film, it is best to pass through the surface with the highest density Amount of light reaching the interface between the low-density surface and the support [= (S
L '/ S L )] is preferably 12% or more and 50% or less, and particularly preferably 14% or more and 35% or less.
【００２４】この透過光量が10％以下のように極端に少
ないと低濃度面を形成するための高濃度面を透過してく
る光量が非常に少ないために、最高濃度の高い面のみの
増感紙を用いて撮影する場合に撮影濃度の低い面の画像
形成効率が非常に劣化するからである。撮影濃度の低い
面の画像形成効率が悪いと最高濃度の低い面が形成する
高濃度部位の濃度低下が大きく、最高濃度の高い面が形
成する特性曲線とのつながりが悪くなるからである。従
って片面撮影専用としてはこの透過率が大きい方が有利
である。If the amount of transmitted light is extremely small, such as 10% or less, the amount of light transmitted through the high-density surface for forming the low-density surface is very small, so that only the surface with the highest maximum density is sensitized. This is because the image forming efficiency of the surface having a low image density is extremely deteriorated when an image is taken using paper. This is because if the image forming efficiency of the surface having a low image density is poor, the density of the high density area formed by the surface having a low maximum density is large, and the connection with the characteristic curve formed by the surface having a high maximum density becomes poor. Therefore, it is advantageous that the transmittance is large for single-sided photography only.
【００２５】一方、透過光量が50％を越えると両面撮影
した場合にクロスオーバー光の増大により鮮鋭性の劣化
が顕著になり画質が低下したり、それぞれの面に適用し
た増感紙の特性が忠実に得られなくなるなど好ましくな
い。従って、本発明の目的である１枚のフィルムで片面
撮影と両面撮影で高い画質と任意の特性曲線を得るに
は、最高濃度の高い面を透過して最高濃度の低い面と支
持体の界面に到達する光量と最高濃度の低い面を透過し
て最高濃度の高い面と支持体の界面に到達する光量とも
12％以上、50％以下、特に好ましくは14％以上、35％以
下である。On the other hand, when the amount of transmitted light exceeds 50%, the sharpness deterioration becomes remarkable due to the increase of the crossover light when the both sides are photographed, the image quality is deteriorated, and the characteristics of the intensifying screen applied to each surface are It is not preferable because it cannot be obtained faithfully. Therefore, in order to obtain high image quality and an arbitrary characteristic curve in single-sided shooting and double-sided shooting with one film, which is the object of the present invention, the interface between the surface having the highest maximum density and the surface having the lowest maximum density is transmitted through the surface having the highest maximum density. And the amount of light that reaches the interface between the surface with the highest density and the support after passing through the surface with the lowest density.
It is 12% or more and 50% or less, particularly preferably 14% or more and 35% or less.
【００２６】一方、最高濃度の低い面を透過して最高濃
度の高い面と支持体の界面に到達する光量は０％〜35％
が好ましく、特に好ましくは12％〜30％である。On the other hand, the amount of light transmitted through the surface having the lowest maximum density and reaching the interface between the surface having the highest maximum density and the support is 0% to 35%.
Is preferable, and particularly preferably 12% to 30%.
【００２７】最高濃度の低い（高感度）面に高感度増感
紙を用い、裏面に低感度増感紙を用いた場合、仕上がり
写真として中高濃度部位を形成することになる最高濃度
の高い面が高い鮮鋭性を得るためには、出来る限り最高
濃度の低い面から裏面への透過光量が少ない方が良いか
らである。When a high-sensitivity intensifying screen is used for the surface with the lowest maximum density (high sensitivity) and a low-sensitizing screen is used for the back surface, the surface with the highest maximum density that will form medium-high density areas as a finished photograph. In order to obtain high sharpness, it is preferable that the amount of transmitted light from the surface having the lowest maximum density to the back surface is small.
【００２８】しかし、最高濃度の低い面の乳剤層の下に
クロスオーバー光をカットする層を設けたり、最高濃度
の低い面の乳剤層に多量の染料などを添加して最高濃度
の低い面を透過して最高濃度の高い面と支持体の界面に
到達する光を10％以下となるような極端に少なくした場
合は、増感紙を最高濃度の高い面のみに用いて撮影する
場合に、最高濃度の低い面の画像形成の効率が非常に低
下してしまい好ましくない。However, a layer for cutting crossover light is provided below the emulsion layer having the lowest maximum density, or a large amount of dye or the like is added to the emulsion layer having the lowest maximum density to remove the surface having the lowest maximum density. When the amount of light that passes through and reaches the interface between the highest density surface and the support is reduced to 10% or less, when intensifying screen is used only on the highest density surface for shooting, This is not preferable because the efficiency of image formation on the surface having the lowest maximum density is significantly reduced.
【００２９】本発明において、最高濃度の低い面から最
高濃度の高い面への光透過率である（ＳH′／ＳH）値
は、0.35以下が好ましいが、この値を小さくするために
最高濃度の低い面もしくは最高濃度の高い面の乳剤層よ
り支持体に近い側のクロスオーバー光を大きくカットす
る層を設けることは、最高濃度の高い面にのみ増感紙を
用いる撮影方法の場合、感度低下を引き起こし好ましく
ない。もし設ける場合でもクロスオーバー光の透過光量
は、（ＳH′／ＳH）値で0.12未満にならないことが好ま
しい。クロスオーバー光のカットは乳剤層自体の光吸収
率を向上して達成することが好ましい。In the present invention, the (S H ′ / S H ) value, which is the light transmittance from the surface having a low maximum density to the surface having a high maximum density, is preferably 0.35 or less, but the maximum value is required to reduce this value. Providing a layer that largely cuts the crossover light on the side closer to the support than the emulsion layer on the low-density surface or the high-density surface is the case in the case of a shooting method that uses an intensifying screen only on the high-density surface. It is not preferable because it causes a decrease in sensitivity. If the transmitted light amount of the cross-over light, even when providing is preferably not less than 0.12 (S H '/ S H) value. It is preferable to cut the crossover light by improving the light absorption rate of the emulsion layer itself.
【００３０】本発明の感光材料は、最高濃度の高い面に
のみ蛍光増感紙を用いて撮影する方法、もしくは最高濃
度の低い面に高感度増感紙を用い、最高濃度の高い面に
低感度増感紙を用いることが好ましい。The light-sensitive material of the present invention can be photographed by using a fluorescent intensifying screen only on the surface with the highest maximum density, or by using a high-sensitivity intensifying screen on the surface with the lowest maximum density. It is preferable to use a sensitivity intensifying screen.
【００３１】しかし、高いコントラストの写真を得たい
用途には、最高濃度の高い面に高感度増感紙を用い、最
高濃度の低い面に低感度増感紙を用いることができる。
また濃度最高の低い面にのみ蛍光増感紙を用いて撮影す
る方法ではコントラストの低い写真、または広いラチュ
ードを得たい場合に行うことができる。However, for applications where it is desired to obtain a high-contrast photograph, a high-sensitivity intensifying screen can be used on the side having a high maximum density and a low-sensitizing intensifying screen can be used on the side having a low maximum density.
Further, a method of taking a picture with a fluorescent intensifying screen only on the surface with the lowest density can be performed when a photograph with a low contrast or a wide latitude is desired.
【００３２】本発明の感光材料は支持体の両面の写真特
性が異なるので使用する際には、面の識別が必要であ
る。従来の片面感材に実施されているような"ノッチ"を
設けることは有効であるが、暗室のセーフライト光の反
射量の違いで表裏を識別できることは更に有効である。
本発明の感光材料は蛍光体にガドリニウムサルファオキ
サイド：テルビウムを使用することが好ましいので、感
度の低下を防止するために、この蛍光体の発光強度の最
も強い545nmに対する吸収が少なく、通常560nm以上の波
長が主成分であるセーフライト光に対する吸収が高い物
質を用いることが好ましい。素材としては、赤色の補色
であるシアン発色したカプラーや545nmの光の吸収が少
ない青緑〜緑色染料を添加することが好ましい。Since the light-sensitive material of the present invention has different photographic characteristics on both sides of the support, it is necessary to identify the sides when it is used. It is effective to provide a "notch" as used in the conventional single-sided photosensitive material, but it is more effective to be able to identify the front and back sides by the difference in the reflection amount of safelight light in a dark room.
Since the light-sensitive material of the present invention preferably uses gadolinium sulfoxide: terbium for the phosphor, in order to prevent a decrease in sensitivity, the phosphor has little absorption at 545 nm, which is the strongest emission intensity, and usually has a wavelength of 560 nm or more. It is preferable to use a substance having a high absorption for safelight light, which has a wavelength as a main component. As a material, it is preferable to add a coupler that develops cyan, which is a complementary color of red, or a blue-green to green dye that absorbs less light at 545 nm.
【００３３】この560nm以上、700nm以下の波長の光に高
い吸収を持つ物質は、片側に用いることが好ましいが、
添加量を変えて両側に用いることもできる。The substance having a high absorption for light having a wavelength of 560 nm or more and 700 nm or less is preferably used on one side,
It is also possible to change the addition amount and use it on both sides.
【００３４】この560nm以上の波長の光を吸収する物質
の添加量は、560nm以上の光の反射量を低下させたい面
側に、反対面に対して反射光量を30％以上低減するよう
に添加することが好ましい。The amount of the substance that absorbs light having a wavelength of 560 nm or more is added so that the amount of reflected light of 560 nm or more is desired to be reduced and the amount of reflected light is reduced by 30% or more with respect to the opposite surface. Preferably.
【００３５】560nm以上の波長を吸収する物質はとくに
限定されないが、写真性能に悪影響を及ぼさないものが
好ましく、カプラーの発色体もしくはアントラキノン系
の染料を高沸点有機溶媒に分散したものを添加する方法
や水溶性でハロゲン化銀に吸着性の少ないオキソノール
系などの染料を水に溶解して乳剤層、保護層、中間層、
下引層等に添加することが好ましい。A substance absorbing a wavelength of 560 nm or more is not particularly limited, but a substance which does not adversely affect photographic performance is preferable, and a method of adding a coupler color former or an anthraquinone dye dispersed in a high boiling organic solvent is added. Or a water-soluble dye having a low adsorptivity for silver halide, such as an oxonol dye, is dissolved in water to form an emulsion layer, a protective layer, an intermediate layer,
It is preferably added to the undercoat layer or the like.
【００３６】本発明のハロゲン化銀写真感光材料は、最
高濃度の高い面には多くのハロゲン化銀が必要な場合が
あり、この様な場合には現像、定着、水洗処理で流出す
る親水性ポリマー（例えばポリビニルアルコール、ポリ
アクリル酸、ポリアクリルアミド、デキストラン等）を
0.1〜2.5［ｇ／ｍ2］添加することが好ましい。The silver halide photographic light-sensitive material of the present invention may require a large amount of silver halide on the side having the highest maximum density. In such a case, the hydrophilicity which flows out during the development, fixing and washing treatments. Polymers (eg polyvinyl alcohol, polyacrylic acid, polyacrylamide, dextran, etc.)
It is preferable to add 0.1 to 2.5 [g / m 2 ].
【００３７】ハロゲン化銀の付き量は、迅速処理適性の
面から支持体の片面当たり4.0［ｇ／ｍ2］以下が好まし
い。The amount of silver halide applied is preferably 4.0 [g / m 2 ] or less per one side of the support from the viewpoint of suitability for rapid processing.
【００３８】支持体の両側の個々の感度値は、それぞれ
の面の最高濃度からカブリ濃度を引いた値に0.4を乗
じ、さらにカブリ濃度を足した値の濃度を得るのに必要
なＸ線量の逆数として求めた。The individual sensitivity values on both sides of the support were calculated by multiplying the value obtained by subtracting the fog density from the maximum density of each surface by 0.4 and then adding the fog density to obtain the X-ray dose required. It was calculated as the reciprocal.
【００３９】本発明においては、ＨＳ面（高濃度乳剤
面）の最高濃度が1.80以上あることが好ましい。ＨＳ面
側のみに蛍光増感紙を用いて撮影する場合、本発明試料
では濃度1.80近くまでＨＳ面のみの画像であり、診断に
必要な濃度域の大部分がＨＳ面のみで形成することがで
き、非常に高い鮮鋭性が得られるからである。In the present invention, the maximum density on the HS surface (high-concentration emulsion surface) is preferably 1.80 or more. When a fluorescent intensifying screen is used only on the HS surface side, the sample of the present invention has an image of only the HS surface up to a density of about 1.80, and most of the density range necessary for diagnosis can be formed only on the HS surface. This is because it is possible to obtain extremely high sharpness.
【００４０】しかしＨＳ面のみで濃度1.80近くまで形成
させるには、ＨＳ面からＬＳ面（低濃度乳剤面）へのク
ロスオーバー光量が35％以下が好ましい。However, in order to form a density close to 1.80 only on the HS surface, the crossover light amount from the HS surface to the LS surface (low density emulsion surface) is preferably 35% or less.
【００４１】本発明のハロゲン化銀写真感光材料に用い
られる乳剤は、沃臭化銀、沃塩化銀、沃塩臭化銀などい
ずれのハロゲン化銀であってもよいが、特に高感度のも
のが得られるという点では、沃臭化銀であることが好ま
しい。The emulsion used in the silver halide photographic light-sensitive material of the present invention may be any silver halide such as silver iodobromide, silver iodochloride and silver iodochlorobromide, but is particularly high sensitive. Silver iodobromide is preferred from the standpoint of obtaining
【００４２】写真乳剤中のハロゲン化銀粒子は、立方
体、８面体、14面体のような全て等方的に成長したも
の、あるいは球形のような多面的な結晶型のもの、面欠
陥を有した双晶から成るもの、あるいはそれらの混合型
または複合型であってもよい。これらハロゲン化銀粒子
の粒径は、0.1μm以下の微粒子から20μmに至る大粒子
であってもよい。The silver halide grains in the photographic emulsion were all isotropically grown such as cubes, octahedrons and tetrahedra, or were polyhedral crystals such as spheres, and had plane defects. It may be composed of twins, or a mixed type or a mixed type thereof. The grain size of these silver halide grains may be from fine grains of 0.1 μm or less to large grains of 20 μm.
【００４３】本発明のハロゲン化銀写真感光材料に用い
られる乳剤は、公知の方法で製造できる。例えば、リサ
ーチ・ディスクロージャー（ＲＤ）No.17643（1978年12
月）・22〜23頁の１・乳剤製造法（Emulsion Preparatio
n and types）及び同（ＲＤ）No.18716（1979年11月）
・648頁に記載の方法或はT.H.James著“Thetheory ofth
e photographic process”第４版、Macmillan社刊（197
7年）38〜104頁に記載の方法、G.F.Dauffin著「写真乳
剤化学」“Photographic emulsion Chemistry”、Focal
press 社刊（1966年）、P.Glafkides著「写真の物理と
化学“Chimieet physique photographique”Paul Monte
l 社刊（1967年）、V.L.Zelikman 他著「写真乳剤の製
造と塗布」“Making and Coating photographic Emulsi
on”Focal press 社刊（1964年）などに記載の方法によ
り調製される。The emulsion used in the silver halide photographic light-sensitive material of the present invention can be produced by a known method. For example, Research Disclosure (RD) No.17643 (1978 12
Mon. ・ Pages 22-23 1. Emulsion Preparatio
n and types) and the same (RD) No.18716 (November 1979)
・ The method described on page 648 or “The theory ofth” by TH James
e photographic process "4th edition, published by Macmillan (197
7 years) Method described on pages 38-104, "Photographic emulsion Chemistry" by GF Dauffin, Focal
Published by press (1966), P. Glafkides “Physics and Chemistry of Photography“ Chimieet physique photographique ”Paul Monte
VL Company (1967), VL Zelikman et al. “Making and Coating photographic Emulsi”
It is prepared by the method described in on ”Focal press (1964).
【００４４】本発明に好ましく用いられるハロゲン化銀
乳剤としては、例えば特開昭59-177535号、同61-802237
号、同61-132943号、同63-49751号などに開示されてい
る内部高沃度型単分散粒子が挙げられる。結晶の晶癖は
立方体、14面体、８面体及びその中間の｛111｝面と｛1
00｝面が任意に混在していてもよい。The silver halide emulsions preferably used in the present invention are, for example, JP-A-59-177535 and 61-802237.
No. 61-132943, No. 63-49751, and the like, and internal high iodine type monodisperse particles are disclosed. The crystal habit is cubic, tetradecahedron, octahedron, and {111} face and {1} in the middle.
00} planes may be arbitrarily mixed.
【００４５】ここで言う単分散粒子とは、常法により例
えば平均粒子直径を測定したとき、粒子数または重量で
少なくとも95％の粒子が、平均粒子径の±40％以内、好
ましくは±30％以内にあるハロゲン化銀粒子である。ハ
ロゲン化銀の粒径分布は、狭い分布を有した単分散乳剤
或は広い分布の多分散乳剤のいずれであってもよい。The monodisperse particles referred to herein mean, for example, when the average particle diameter is measured by a conventional method, at least 95% of the particles by number or weight are within ± 40% of the average particle diameter, preferably ± 30%. It is within the range of silver halide grains. The grain size distribution of silver halide may be either a monodisperse emulsion having a narrow distribution or a polydisperse emulsion having a wide distribution.
【００４６】本発明に使用できる単分散乳剤の製法は公
知であり、例えばJ.Phot.Sci.12.242〜251頁(1963)、特
開昭48-36890号、同52-16364号、同55-142329号、同58-
49938号、英国特許1,413,748号、米国特許3,574,628
号、同3,655,394号などの公報に記載されている。The method for producing the monodisperse emulsion which can be used in the present invention is known, and for example, J. Phot. Sci.12.242 to 251 pages (1963), JP-A-48-36890, 52-16364, 55-. No. 142329, 58-
49938, British Patent 1,413,748, U.S. Patent 3,574,628
No. 3,655,394 and the like.
【００４７】上記の単分散乳剤としては種晶を用い、こ
の種晶を成長核として銀イオン及びハライドイオンを供
給することにより、粒子を成長させた乳剤が特に好まし
い。なおコア／シェル乳剤を得る方法としては、例えば
英国特許1,027,146号、米国特許3,505,068号、同4,444,
877号、特開昭60-14331号などの公報に詳しく述べられ
ている。A seed crystal is used as the monodisperse emulsion, and an emulsion in which grains are grown by supplying silver ions and halide ions with the seed crystal as a growth nucleus is particularly preferable. As a method for obtaining a core / shell emulsion, for example, British Patent 1,027,146, U.S. Patents 3,505,068, 4,444,
It is described in detail in the publications such as 877 and JP-A-60-14331.
【００４８】さらに本発明には特開昭63-151618号記載
の単分散状粒子を好ましく用いることができる。Further, the monodisperse particles described in JP-A-63-151618 can be preferably used in the present invention.
【００４９】本発明に用いられるもう１つの粒子形態と
してのハロゲン化銀乳剤は、投影面積の50％以上が平均
アスペクト比が３以上、15以下の平板状粒子であること
が好ましい。The silver halide emulsion as another grain form used in the present invention is preferably tabular grains in which 50% or more of the projected area has an average aspect ratio of 3 or more and 15 or less.
【００５０】アスペクト比とは特開平1-99345号に記載
の方法で求めたものである。The aspect ratio is determined by the method described in JP-A-1-99345.
【００５１】平板状粒子は、分光増感色素の添加量の調
整でクロスオーバー光量を調整できる。In the tabular grains, the amount of crossover light can be adjusted by adjusting the addition amount of the spectral sensitizing dye.
【００５２】かかる平板状粒子の利点は、分光増感効率
の向上、画像の粒状性及び鮮鋭性の改良などが得られる
として例えば、英国特許2,112,157号、米国特許4,439,5
20号、同4,433,048号、同4,414,310号、同4,434,226
号、特開昭58-113927号、同58-127921号、同63-138342
号、同63-284272号、同63-305343号などで開示されてお
り、乳剤はこれらの公報に記載の方法により調製するこ
とができる。The advantage of such tabular grains is that the spectral sensitization efficiency can be improved and the graininess and sharpness of images can be improved. For example, British Patent 2,112,157 and US Pat.
No. 20, 4,433,048, 4,414,310, 4,434,226
No. 58-113927, No. 58-127921, No. 63-138342
No. 63-284272, No. 63-305343, etc., and the emulsion can be prepared by the method described in these publications.
【００５３】さらに本発明の感光材料は片面のみに増感
紙を用いて撮影する場合でも、高いコントラストが得ら
れるように沃化銀含有率が2.5モル％以下で臭化銀含有
率が95.5モル％以上の粒子であり、粒径は分散性は、変
動係数が0.30以下が好ましい。Further, the light-sensitive material of the present invention has a silver iodide content of 2.5 mol% or less and a silver bromide content of 95.5 mol so that a high contrast can be obtained even when an intensifying screen is used for photographing on only one side. % Or more of the particles, and the dispersion coefficient of the particle diameter is preferably 0.30 or less.
【００５４】上述した乳剤は、粒子表面に潜像を形成す
る表面潜像型あるいは粒子内部に潜像を形成する内部潜
像型、表面と内部に潜像を形成する型のいずれの乳剤で
あってもよい。これらの乳剤は、物理熟成あるいは粒子
調製の段階でカドミニウム塩、鉛塩、亜鉛塩、タリウム
塩、イリジウム塩又はその錯塩、ロジウム塩またはその
錯塩、鉄塩又はその錯塩などを用いてもよい。乳剤は可
溶性塩類を除去するためにヌーデル水洗法、フロキュレ
ーション沈降法などの水洗方法がなされてよい。好まし
い水洗法としては、例えば特公昭35-16086号記載のスル
ホ基を含む芳香族炭化水素系アルデヒド樹脂を用いる方
法、又は特開昭63-158644号記載の凝集高分子剤例示Ｇ
３、Ｇ８などを用いる方法が特に好ましい脱塩法として
挙げられる。The above-mentioned emulsion is either a surface latent image type that forms a latent image on the surface of the grain, an internal latent image type that forms a latent image inside the grain, or a type that forms a latent image on the surface and inside. May be. In these emulsions, a cadmium salt, a lead salt, a zinc salt, a thallium salt, an iridium salt or a complex salt thereof, a rhodium salt or a complex salt thereof, an iron salt or a complex salt thereof, or the like may be used at the stage of physical ripening or grain preparation. The emulsion may be subjected to a water washing method such as a Noudel water washing method or a flocculation sedimentation method in order to remove soluble salts. As a preferable washing method, for example, a method using an aromatic hydrocarbon aldehyde resin containing a sulfo group described in JP-B-35-16086, or an aggregation polymer agent Ex. G described in JP-A-63-158644
A particularly preferable desalting method is a method using 3, G8 or the like.
【００５５】本発明に係る乳剤は、物理熟成または化学
熟成前後の工程において、各種の写真用添加剤を用いる
ことができる。公知の添加剤としては、例えばリサーチ
・ディスクロージャー（ＲＤ）No.17643（1978年12
月）、同No.18716（1979年11月）及び同No.308119（198
9年12月）に記載された化合物が挙げられる。これら三
つのリサーチ・ディスクロージャーに示されている化合
物種類と記載箇所を以下に掲載した。The emulsion according to the present invention can use various photographic additives in the steps before and after physical ripening or chemical ripening. Known additives include, for example, Research Disclosure (RD) No. 17643 (December 1978).
No. 18716 (November 1979) and No. 308119 (198)
The compound described in December, 9) is mentioned. The types of compounds and the places where they are described in these three Research Disclosures are listed below.
【００５６】 添加剤 RD-17643 RD-18716 RD-308119 頁 分類 頁 分類 頁 分類 化学増感剤 23 III 648 右上 996 III 増感色素 23 IV 648〜649 996〜8 IV 減感色素 23 IV 998 Ｂ 染料 25〜26 VIII 649〜650 1003 VIII 現像促進剤 29 XXI 648 右上 カブリ抑制剤・安定剤 24 IV 649 右上 1006〜７ VI 増白剤 24 V 998 V 硬膜剤 26 X 651 左 1004〜５ X 界面活性剤 26〜７ XI 650 右 1005〜６ XI 帯電防止剤 27 XII 650 右 1006〜７ XIII 可塑剤 27 XII 650 右 1006 XII スベリ剤 27 XII マット剤 28 XVI 650 右 1008〜９ XVI バインダー 26 XXII 1003〜４ XXII 本発明に係る感光材料に用いることのできる支持体とし
ては、例えば前述のRD-17643の28頁及びRD-308119の100
9頁に記載されているものが挙げられる。これら支持体
の表面は塗布層の接着をよくするために、下塗層を設け
たり、コロナ放電、紫外線照射などを施してもよい。Additive RD-17643 RD-18716 RD-308119 Page Classification Page Classification Page Classification Chemical sensitizer 23 III 648 Upper right 996 III Sensitizing dye 23 IV 648-649 996-8 IV Desensitizing dye 23 IV 998 B Dye 25-26 VIII 649-650 1003 VIII Development accelerator 29 XXI 648 Upper right fog inhibitor / stabilizer 24 IV 649 Upper right 1006-7 VI Whitening agent 24 V 998 V Hardener 26 X 651 Left 1004-5 X Surfactant Agent 26-7 XI 650 Right 1005-6 XI Antistatic agent 27 XII 650 Right 1006-7 XIII Plasticizer 27 XII 650 Right 1006 XII Sliding agent 27 XII Matting agent 28 XVI 650 Right 1008-9 XVI Binder 26 XXII 1003-4 XXII Supports that can be used in the light-sensitive material of the present invention include, for example, RD-17643, page 28 and RD-308119, 100 pages.
Examples include those described on page 9. The surface of these supports may be provided with an undercoat layer, corona discharge, ultraviolet irradiation or the like in order to improve adhesion of the coating layer.
【００５７】[0057]
【実施例】以下本発明の実施例について説明する。但し
当然のことではあるが、本発明は以下述べる実施例によ
り限定されるものではない。EXAMPLES Examples of the present invention will be described below. However, as a matter of course, the present invention is not limited to the examples described below.
【００５８】実施例１ ハロゲン化銀乳剤の作成 ハロゲン化銀粒子（Ａ）は、沃素1.4モル％、臭素98.6
モル％からなる平均粒子径1.4μm、平均粒子厚さ0.34μ
mであり、粒径の分散性は変動係数で0.23であった。Example 1 Preparation of Silver Halide Emulsion The silver halide grains (A) were 1.4 mol% iodine and 98.6 bromine.
Average particle size consisting of mol% 1.4μm, average particle thickness 0.34μ
The particle size dispersibility was 0.23 in terms of coefficient of variation.
【００５９】粒子（Ｂ）は、沃素1.2モル％、臭素98.8
モル％からなる平均粒子径1.2μm、平均粒子厚さ0.27μ
mであり、粒径の分散性は変動係数で0.22であった。The particles (B) consisted of 1.2 mol% iodine and 98.8 bromine.
Average particle size consisting of mol% 1.2μm, average particle thickness 0.27μ
The particle size dispersibility was 0.22 in terms of coefficient of variation.
【００６０】また、粒子（Ａ）、（Ｂ）ともに全投影面
積の90％以上がアスペクト比が３以上の平板状粒子で占
めていた。In both grains (A) and (B), 90% or more of the total projected area was occupied by tabular grains having an aspect ratio of 3 or more.
【００６１】（変動係数：特開昭60-162244号記載の方
法による。） 試料の調製、処理及び評価 得られた乳剤（Ａ）及び（Ｂ）のそれぞれのハロゲン化
銀乳剤に銀１モル当たりの容積が500mlになるよう純水
を加えてから50℃とし、後掲の分光増感色素ＡとＢを15
0：1の重量比で合計の量をハロゲン化銀１モル当たり
（Ａ）が300mg、（Ｂ）が450mgになるよう添加した。(Coefficient of variation: according to the method described in JP-A-60-162244) Preparation, processing and evaluation of samples Per mol of silver in each silver halide emulsion of the obtained emulsions (A) and (B) To 50 ℃ after adding pure water so that the volume becomes 500 ml.
The total amount was added in a weight ratio of 0: 1 so that (A) was 300 mg and (B) was 450 mg per mol of silver halide.
【００６２】10分後にチオシアン酸アンモニウム塩を銀
１モル当り（Ａ）が4×10-3モル、（Ｂ）が3×10-3モル
加えて、さらに適当量の塩化金酸とハイポを添加し化学
熟成を開始した。[0062] 10 minutes per mol of silver of ammonium thiocyanate after (A) is 4 × 10 -3 mol, (B) is added 3 × 10 -3 mol, more appropriate amount of addition of the hypo chloroauric acid Then chemical ripening was started.
【００６３】このときのpＨは6.15、銀電位は80mVの条
件で行った。At this time, the pH was 6.15 and the silver potential was 80 mV.
【００６４】化学熟成終了15分前（化学熟成開始から70
分後）に沃化カリウムを銀1モル当たり300mg添加し、５
分後に10％(wt/vol)の酢酸を添加して、pＨを5.6に低下
させ５分間そのpＨ値を保ち、その後水酸化カリウムの
0.5％（wt/vol）液を添加してpＨを6.15に戻し、その後
4-ヒドロキシ-6-メチル-1,3,3a,7-テトラザインデンを2
500mg添加し化学熟成を終了した。15 minutes before the end of chemical ripening (70 minutes from the start of chemical ripening
Minutes later), 300 mg of potassium iodide is added per mol of silver, and 5
After 10 minutes, 10% (wt / vol) acetic acid was added to lower the pH to 5.6 and maintain the pH value for 5 minutes.
Add 0.5% (wt / vol) solution to return pH to 6.15, then
2-hydroxy-6-methyl-1,3,3a, 7-tetrazaindene
The chemical ripening was completed by adding 500 mg.
【００６５】得られた乳剤の（Ａ）及び（Ｂ）に後掲の
乳剤用添加剤を加えて調製液とした。The following emulsion additives were added to (A) and (B) of the obtained emulsion to prepare a preparation liquid.
【００６６】なお、写真乳剤塗布液調製後のpＨは6.2
0、銀電位は80mV（35℃）となるように炭酸ナトリウム
と臭化カリウム液を用いて調整した。The pH after preparation of the photographic emulsion coating solution was 6.2.
0, the silver potential was adjusted to 80 mV (35 ℃) using sodium carbonate and potassium bromide solution.
【００６７】この乳剤塗布液を用いて、次のように試料
を調製した。即ち、写真乳剤層はゼラチン量として高感
度乳剤層側も低感度乳剤層側も2.1g/m2となるように、
ハロゲン化銀量は銀換算値で表１に示す量となるように
した。A sample was prepared as follows using this emulsion coating solution. That is, the photographic emulsion layer has a gelatin amount of 2.1 g / m 2 on both the high-speed emulsion layer side and the low-speed emulsion layer side,
The amount of silver halide was adjusted to the amount shown in Table 1 in terms of silver.
【００６８】又、後掲の添加物を用いて保護層液を調製
した。該保護層はゼラチン付量として1.20g/m2となるよ
うに前記に調製した乳剤層と共に、２台のスライドホッ
パー型コーターを用い毎分85ｍのスピードで支持体上に
両面同時塗布を行い、２分20秒で乾燥し試料を得た。支
持体としては、グリシジルメタクリレート50wt％、メチ
ルアクリレート10wt％、ブチルメタクリレート40wt％の
３種モノマーからなる共重合体の濃度が10wt％になるよ
うに希釈して得た共重合体水性分散液を下引き液として
塗設した厚みが175μmのＸ線フィルム用の濃度0.15に青
色着色したポリエチレンテレフタレートフィルムベース
を用いた。A protective layer solution was prepared using the additives described below. The protective layer, together with the emulsion layer prepared as described above so as to have a gelatin coating amount of 1.20 g / m 2 , was simultaneously coated on both sides of the support using two slide hopper type coaters at a speed of 85 m / min. A sample was obtained by drying in 2 minutes and 20 seconds. As the support, a copolymer aqueous dispersion obtained by diluting the copolymer consisting of three kinds of monomers of glycidyl methacrylate 50 wt%, methyl acrylate 10 wt% and butyl methacrylate 40 wt% to 10 wt% was prepared. A polyethylene terephthalate film base colored as blue with a concentration of 0.15 for an X-ray film having a thickness of 175 μm and applied as a drawing liquid was used.
【００６９】用いた分光増感色素は下記のものである。The spectral sensitizing dyes used are as follows.
【００７０】〈分光増感色素Ａ〉 5,5′-ジクロロ-9-エチル-3,3′-ジ-（3-スルホプロピ
ル）オキサカルボシアニンナトリウム塩の無水物 〈分光増感色素Ｂ〉 5,5′-ジ-（ブトキシカルボニル）-1,1′-ジエチル-3,
3′-ジ-（4-スルホブチル）ベンゾイミダゾロカルボシ
アニンナトリウム塩の無水物 又、乳剤 (感光性ハロゲン化銀乳剤塗布液) に用いた添
加剤は次のとおりである。添加量はハロゲン化銀１モル
当たりの量で示す。<Spectral sensitizing dye A>5,5'-dichloro-9-ethyl-3,3'-di- (3-sulfopropyl) oxacarbocyanine sodium salt anhydride <Spectral sensitizing dye B> 5 , 5'-di- (butoxycarbonyl) -1,1'-diethyl-3,
Anhydrate of 3'-di- (4-sulfobutyl) benzimidazolocarbocyanine sodium salt The additives used in the emulsion (light-sensitive silver halide emulsion coating solution) are as follows. The addition amount is indicated by the amount per mol of silver halide.
【００７１】 1,1-ジメチロール-1-ブロム-1-ニトロメタン 70mg t-ブチル-カテコール 400mg ポリビニルピロリドン(分子量10,000) 1.0g スチレン-無水マレイン酸共重合体 2.5g ニトロフェニル-トリフェニルホスホニウムクロリド 50mg 2-アニリノ-4,6-ジメルカプトトリアジン 60mg 1,3-ジヒドロキシベンゼン-4-スルホン酸アンモニウム 4g 2-メルカプトベンゾイミダゾール-5-スルホン酸ナトリウム 1.5mg C4H9OCH2CH(OH)CH2N(CH2COOH)2 １g 1-フェニル-5-メルカプトテトラゾール
１５ｍｇ1,1-Dimethylol-1-bromo-1-nitromethane 70 mg t-butyl-catechol 400 mg Polyvinylpyrrolidone (molecular weight 10,000) 1.0 g Styrene-maleic anhydride copolymer 2.5 g Nitrophenyl-triphenylphosphonium chloride 50 mg 2 -Anilino-4,6-dimercaptotriazine 60 mg 1,3-dihydroxybenzene-4-ammonium sulfonate 4 g 2-mercaptobenzimidazole-5-sodium sulfonate 1.5 mg C 4 H 9 OCH 2 CH (OH) CH 2 N (CH 2 COOH) 2 1g 1-phenyl-5-mercaptotetrazole
15 mg
【００７２】[0072]
【化１】 [Chemical 1]
【００７３】 ＊（染料乳化分散液）
１．２ｇ ＊＊（表裏識別用染料）表１のフィルムNo.II〜XIIのＬＳ面にのみ添加 50mg 又保護層液に用いた添加物は次のとおりである。添加量
は塗布液１ｌ当たりの量で示す。* (Dye emulsion dispersion)
1.2 g ** (dye for identifying front and back) Addition only to the LS side of the film Nos. II to XII in Table 1 50 mg The additives used in the protective layer liquid are as follows. The added amount is shown as an amount per 1 l of the coating liquid.
【００７４】 石灰処理イナートゼラチン 68g 酸処理ゼラチン 2g ナトリウム-i-アミル-n-デシルスルホサクシネート 0.3g ポリメチルメタクリレート （面積平均粒径3.5μmのマット剤） 1.1g 二酸化ケイ素粒子 （面積平均粒径1.2μmのマット剤） 0.5g ルドックスAM (デュポン社製) (コロイダルシリカ) 30g 2,4-ジクロロ-6-ヒドロキシ- 1,3,5-トリアジンナトリウム塩の２％水溶液 (硬膜剤) 10ml グリオキサール40％水溶液 (硬膜剤) 1.5ml (CH2＝CHSO2CH2)2O (硬膜剤)
３００ｍｇLime-treated inert gelatin 68g Acid-treated gelatin 2g Sodium-i-amyl-n-decylsulfosuccinate 0.3g Polymethylmethacrylate (matting agent having an area average particle size of 3.5 μm) 1.1g Silicon dioxide particles (area average particle size Matting agent of 1.2 μm) 0.5 g Ludox AM (DuPont) (colloidal silica) 30 g 2,4-dichloro-6-hydroxy-1,3,5-triazine sodium salt 2% aqueous solution (hardener) 10 ml Glyoxal 40% aqueous solution (hardener) 1.5 ml (CH 2 = CHSO 2 CH 2 ) 2 O (hardener)
300 mg
【００７５】[0075]
【化２】 [Chemical 2]
【００７６】＊染料乳化分散液は以下のように調製し
た。* The dye emulsion dispersion was prepared as follows.
【００７７】下記の染料をそれぞれ１０ｋｇ秤量し、ト
リクレジルホスフェート28ｌと酢酸エチルの85ｌからな
る溶媒に55℃で溶解した。これをオイル系溶液と称す
る。10 kg of each of the following dyes was weighed and dissolved at 55 ° C. in a solvent consisting of 28 l of tricresyl phosphate and 85 l of ethyl acetate. This is called an oil-based solution.
【００７８】一方、アニオン性界面活性剤（下記ＡＳ）
を1.35kg含み、45℃で溶解した9.3％ゼラチン水溶液270
ｌを調製した。これを水系溶液と称する。On the other hand, an anionic surfactant (AS described below)
Containing 1.35kg of 9.3% gelatin aqueous solution dissolved at 45 ℃ 270
1 was prepared. This is called an aqueous solution.
【００７９】上記オイル系と水系の溶液を分散釜に入
れ、液温を40℃に保つようコントロールしながら混和分
散した。The above oil-based and water-based solutions were placed in a dispersion pot and mixed and dispersed while controlling the liquid temperature to 40 ° C.
【００８０】得られた分散物に下記添加剤（Ｃ）を８g
と、フェノールの2.5％水溶液16ｌ及び水を加えて240kg
に仕上げた後、冷却し固化した。8 g of the following additive (C) was added to the obtained dispersion.
And 16 kg of 2.5% phenol aqueous solution and water, 240 kg
After finishing, it was cooled and solidified.
【００８１】[0081]
【化３】 [Chemical 3]
【００８２】得られた分散物の面積平均粒径はすべて0.
12〜0.14μmの範囲内に入っていた。The area average particle diameters of the obtained dispersions are all 0.
It was within the range of 12 to 0.14 μm.
【００８３】＊＊表裏識別用染料 下記の染料を用いた。染料は赤色と補色関係にある青緑
色の水溶液を使用した。** Dyes for distinguishing between front and back The following dyes were used. As the dye, a blue-green aqueous solution having a complementary color relationship with red was used.
【００８４】[0084]
【化４】 [Chemical 4]
【００８５】得られた試料No.１の感度測定に際して
は、蛍光増感紙SRO-250のバック用（コニカ〔株〕製）
を用いてシングルバック法（増感紙を片面にのみ用いた
もの）にて高感度乳剤層側（Ａ面）に該蛍光増感紙を当
接させて撮影したものと、低感度乳剤層側（Ｂ面）に当
接させて撮影したものとを共に現像処理してそれぞれ試
料（ｌ−I）と（ｌ−II）を得た。When measuring the sensitivity of the obtained sample No. 1, a fluorescent intensifying screen SRO-250 was used for the back (manufactured by Konica Corporation).
And a low-sensitivity emulsion layer side of the high-sensitivity emulsion layer side (A side) photographed with the fluorescent intensifying screen side by a single back method (using the intensifying screen only on one side) Samples (l-I) and (l-II) were obtained by developing together with those photographed by contacting with (B side).
【００８６】この際、カセッテの増感紙の存在しないフ
ロント側には、光吸収率の高い黒塗装を施した。At this time, a black coating having a high light absorption rate was applied to the front side of the cassette where the intensifying screen was not present.
【００８７】撮影は、管電圧80KVP，20mAで0.08秒間の
Ｘ線を照射し、距離法にてセンシトメトリーカーブを作
成し感度、最高濃度及びガンマを求めた。For the photographing, X-rays were irradiated for 0.08 seconds at a tube voltage of 80 KVP and 20 mA, and a sensitometric curve was created by the distance method to determine the sensitivity, maximum density and gamma.
【００８８】なお、現像は、自動現像機SRX-502（コニ
カ〔株〕製）で下記組成の現像液及び定着液を用い、現
像温度が35℃、定着温度が33℃、水洗水は温度18℃で毎
分５ｌを供給し、全処理工程を４５秒モードで処理し
た。For the development, an automatic developing machine SRX-502 (manufactured by Konica Corporation) was used with a developing solution and a fixing solution having the following composition. The developing temperature was 35 ° C., the fixing temperature was 33 ° C., and the washing water was at a temperature of 18 ° C. The entire process was processed in a 45 second mode, supplying 5 l / min at 0 ° C.
【００８９】試料（ｌ−I）からＢ面側の感光層を蛋白
分解酵素で除去することによってＡ面の感度を求め、同
様に試料（ｌ−II）からＡ面側の感光層を除去すること
によってＢ面の感度が求められる。The sensitivity of the A side was obtained by removing the photosensitive layer on the B side from the sample (l-I) with a protease, and the photosensitive layer on the A side was similarly removed from the sample (l-II). Therefore, the sensitivity of the B side is required.
【００９０】感度の値は、最高濃度からカブリを引いた
値に0.4を乗じ、さらにカブリを足した値の濃度を得る
に必要なＸ線量の逆数として求めた。The sensitivity value was determined as the reciprocal of the X-ray dose required to obtain the density obtained by multiplying the maximum density minus the fog by 0.4 and then adding the fog.
【００９１】但し、試料No.１は通常の両面Ｘ線フィル
ムと同一の乳剤構成層のため蛍光増感紙を両面用いて通
常露光を施した。However, since Sample No. 1 had the same emulsion constitutional layer as a normal double-sided X-ray film, it was subjected to normal exposure using both sides of a fluorescent intensifying screen.
【００９２】各試料No.１〜20の画質の評価として、鮮
鋭性を下記のフンクテストチャート撮影にて評価する。As the evaluation of the image quality of each sample No. 1 to 20, sharpness is evaluated by the following Funk test chart photography.
【００９３】シングルバック法及び表２に記載の蛍光増
感紙を組み合わせ、管電圧80KVPで撮影した。処理は前
記センシトメトリーと同一処理（同一の自動現像機、処
理剤、処理温度、処理時間での処理）をした。The single back method and the fluorescent intensifying screens shown in Table 2 were combined and photographed at a tube voltage of 80 KVP. The treatment was the same as the above-mentioned sensitometry (treatment with the same automatic developing machine, treating agent, treating temperature and treating time).
【００９４】鮮鋭性はフンクテストチャートＳＭＳ5853
（コニカメディカル〔株〕販売）を用いて、表２のよう
な増感紙とフィルムの組み合わせで撮影し前記処理条件
で処理した。Sharpness is Funk test chart SMS5853
Photographs were taken with a combination of intensifying screen and film as shown in Table 2 using (Konica Medical Co., Ltd.) and processed under the above processing conditions.
【００９５】露光量はフンクテストチャートによりでき
る濃淡の平均濃度が0.8±0.02になるよう各試料とも露
光した。As for the exposure amount, each sample was exposed so that the average density of light and shade formed by the Funk test chart was 0.8 ± 0.02.
【００９６】 〔現像液組成〕 亜硫酸カリウム 60.0g ハイドロキノン 25.0g 1-フェニル-3-ピラゾリドン 1.5g ホウ酸 10.0g 水酸化カリウム 23.0g トリエチレングリコール 17.5g 5-メチルベンゾトリアゾール 0.04g 5-ニトロベンゾイミダゾール 0.11g 1-フェニル-5-メルカプトテトラゾール 0.015g 氷酢酸 16.0g 臭化カリウム 4.0g 水を加えて１ｌに仕上げる。[Developer composition] Potassium sulfite 60.0 g Hydroquinone 25.0 g 1-Phenyl-3-pyrazolidone 1.5 g Boric acid 10.0 g Potassium hydroxide 23.0 g Triethylene glycol 17.5 g 5-Methylbenzotriazole 0.04 g 5-Nitrobenzimidazole 0.11g 1-phenyl-5-mercaptotetrazole 0.015g glacial acetic acid 16.0g potassium bromide 4.0g Add water to make 1 liter.
【００９７】 〔定着液組成〕 チオ硫酸ナトリウム 45g エチレンジアミン四酢酸２ナトリウム 0.5g チオ硫酸アンモニウム 150g 無水亜硫酸ナトリウム ８g 酢酸カリウム 16g 硫酸アルミニウム18水塩 27g 硫酸（50wt％） ６g クエン酸 １g ホウ酸 ７g 氷酢酸 ３g １ｌの水溶液に仕上げて氷酢酸でpＨを4.6（25℃）に調整した。[Fixer composition] Sodium thiosulfate 45g Ethylenediaminetetraacetic acid disodium 0.5g Ammonium thiosulfate 150g Anhydrous sodium sulfite 8g Potassium acetate 16g Aluminum sulfate 18-hydrate 27g Sulfuric acid (50wt%) 6g Citric acid 1g Boric acid 7g Glacial acetic acid 3g The pH was adjusted to 4.6 (25 ° C.) with glacial acetic acid after finishing the solution to 1 liter.
【００９８】尚、現像液、定着液は作成から24時間後に
自動現像機に入れて用いた。The developing solution and the fixing solution were put into an automatic developing machine 24 hours after preparation and used.
【００９９】鮮鋭性の評価 Ａ：ルーペで10LP／mmまで識別できる。 Evaluation of sharpness A: It is possible to identify up to 10 LP / mm with a magnifying glass.
【０１００】Ｂ：ルーペで８LP／mmまで識別できる。B: Can be identified up to 8 LP / mm with a magnifying glass.
【０１０１】Ｃ：ルーペで６LP／mmまで識別できる。C: It is possible to identify up to 6 LP / mm with a magnifying glass.
【０１０２】Ｄ：ルーペで５LP／mmまで識別できる。D: It is possible to identify up to 5 LP / mm with a magnifying glass.
【０１０３】Ｅ：ルーペで４LP／mmまで識別できる。E: Can be identified up to 4 LP / mm with a magnifying glass.
【０１０４】粒状性の評価 粒状性は、20段階で厚みを持つアルミニウム製ペネトロ
メーターの格段に直径３mmのアクリル製ビーズと直径３
mmのアルミニウム製球を密着させて管電圧90KVPで撮影
し、前記センシトメトリーと同一の処理条件で現像し
た。得られた試料について粒状性の目立つ濃度0.5から
1.2の範囲の粒状性を目視評価した。 Graininess Evaluation Graininess is significantly different from that of an aluminum penetrometer having a thickness of 20 levels and acrylic beads of 3 mm diameter and 3 diameters.
mm aluminum spheres were brought into close contact with each other, photographed at a tube voltage of 90 KVP, and developed under the same processing conditions as in the above sensitometry. For the obtained sample, from the density 0.5 where the granularity is noticeable
The graininess in the range of 1.2 was visually evaluated.
【０１０５】Ａ：表２の試料No.１と同等で粒状性は非
常に良好 Ｂ：試料No.１に対して若干の劣化が認められるが実用
上の支障はない Ｃ：高コントラスト両面フィルムを用いた試料No.５と
同等であり、明らかに粒状性の劣化が認められる Ｄ：粒状性の劣化が顕著で、濃度差の僅かなアクリル製
ビーズの識別が困難になるが、アルミニウム製の濃度差
の大きい画像識別には影響がない Ｅ：粒状性の劣化が著しく、アルミニウム製球の画像識
別にも支障をきたしており、実用にならない 上記でＡが最も優れ、Ｅが優れないことを示す。A: Same as sample No. 1 in Table 2 and very good in graininess. B: Some deterioration is observed with respect to sample No. 1, but no problem in practical use. C: High contrast double-sided film. It is equivalent to sample No. 5 used, and the deterioration of the graininess is clearly observed. D: The deterioration of the graininess is remarkable, making it difficult to identify acrylic beads with a small difference in concentration, but the concentration of aluminum There is no effect on image discrimination with a large difference E: Graininess is remarkably deteriorated, which also hinders image discrimination of aluminum balls, which is not practical. In the above, A is the best and E is not good. ..
【０１０６】次に塗布したフィルムの内訳及び特性を表
１に示す。Table 1 shows the details and characteristics of the applied film.
【０１０７】[0107]
【表１】 [Table 1]
【０１０８】なお、塗布したXII種のフィルムは以下の
写真性能を有していた。The coated XII type film had the following photographic properties.
【０１０９】・塗布フィルムNo.Ｉは支持体の両側の乳
剤面の特性は同一であり、ＨＳ面、ＬＳ面とも相対感度
ＳH，ＳLは88であった。The coating film No. I had the same emulsion surface characteristics on both sides of the support, and the relative sensitivities S H and S L were 88 on both the HS and LS surfaces.
【０１１０】カブリ＋0.5の濃度とカブリ＋1.3の濃度を
結ぶコントラストＧHは1.29 カブリ＋0.3の濃度とカブリ＋0.6の濃度を結ぶコントラ
ストＧLは1.21 ＨＳ面に現像後の濃度がカブリ＋1.1の濃度となる露光
量を露光した場合のＬＳ面の濃度はカブリ＋0.29であっ
た。塗布フィルムNo.Iは、支持体の両面が同一特性であ
り、ＨＳ面に現像後の濃度がカブリ＋1.1の濃度となる
露光量を露光した場合のＬＳ面の濃度はカブリ＋0.20を
越えている。従って、本発明試料には該当しない。[0110] Concentration after development contrast G L is 1.21 HS plane contrast G H connecting the density of the density and fog + 1.3 of fog +0.5 connecting density of the density and fog +0.6 1.29 fog +0.3 The density of the LS surface was fog +0.29 when the exposure amount was such that the density of fog was +1.1. The coating film No.I has the same characteristics on both sides of the support, and when the HS surface is exposed to an exposure amount such that the density after development is a density of fog +1.1, the density of the LS surface is fog +0.20. Is over. Therefore, it does not correspond to the sample of the present invention.
【０１１１】・塗布フィルムNo.IIは支持体の両側の乳
剤面の特性は同一であり、ＨＳ面、ＬＳ面とも相対感度
ＳH，ＳLは85であった。The coating film No. II had the same emulsion surface characteristics on both sides of the support, and the relative sensitivities S H and S L were 85 on both the HS and LS surfaces.
【０１１２】カブリ＋0.5の濃度とカブリ＋1.3の濃度を
結ぶコントラストＧHは1.75 カブリ＋0.3の濃度とカブリ＋0.6の濃度を結ぶコントラ
ストＧLは1.51 ＨＳ面に現像後の濃度がカブリ＋1.1の濃度となる露光
量を露光した場合のＬＳ面の濃度はカブリ＋0.25であっ
た。塗布フィルムNo.IIは、支持体の両面が同一特性で
あり、ＨＳ面に現像後の濃度がカブリ＋1.1の濃度とな
る露光量を露光した場合のＬＳ面の濃度はカブリ＋0.20
を越えている。従って、本発明試料には該当しない。The contrast GH connecting the density of fog +0.5 and the density of fog +1.3 is 1.75, and the contrast GL connecting the density of fog +0.3 and the density of fog +0.6 is the density after development on the 1.51 HS surface. The density of the LS surface when the exposure amount was such that the density was fog + 1.1 was fog + 0.25. The coating film No. II has the same characteristics on both sides of the support, and when the HS surface is exposed to an exposure amount such that the density after development is fog +1.1, the density on the LS surface is fog +0.20.
Is over. Therefore, it does not correspond to the sample of the present invention.
【０１１３】・塗布フィルムNo.IIIは支持体の両側の乳
剤面の特性は異なり、ＨＳ面の相対感度ＳHは95、ＬＳ
面の相対感度ＳLは68であった。The coating film No. III has different emulsion surface characteristics on both sides of the support, and the relative sensitivity S H on the HS surface is 95, LS
The relative sensitivity S L of the surface was 68.
【０１１４】ＨＳ面:カブリ0.5の濃度とカブリ＋1.3の
濃度を結ぶコントラストＧHは１．９５ ＬＳ面：カブリ＋0.3の濃度とカブリ＋0.6の濃度を結ぶ
コントラストはＧLは1.30 ＨＳ面に現像後の濃度がカブリ＋1.1の濃度となる露光
量を露光した場合のＬＳ面の濃度はカブリ＋0.06であっ
た。塗布フィルムNo.IIIは、ＨＳ面の相対感度がＬＳ面
の相対感度より高い。従って、本発明試料には該当しな
い。[0114] HS surface: Contrast G H is 1.95 LS surface connecting the density of the density of fog 0.5 and fog + 1.3: the contrast G L connecting the density of the density and fog +0.6 of fogging + 0.3 1.30 When the HS surface was exposed to an exposure amount such that the density after development was a density of fog +1.1, the density of the LS surface was fog +0.06. The relative sensitivity of the HS surface of the coating film No. III is higher than that of the LS surface. Therefore, it does not correspond to the sample of the present invention.
【０１１５】・塗布フィルムNo.IVは支持体の両側の乳
剤面の特性は異なり、ＨＳ面の相対感度ＳHは97、ＬＳ
面の相対感度ＳLは103であった。The coating film No. IV has different emulsion surface characteristics on both sides of the support, and the relative sensitivity S H on the HS surface is 97, LS
The relative sensitivity S L of the surface was 103.
【０１１６】ＨＳ面:カブリ＋0.5の濃度とカブリ＋1.3
の濃度を結ぶコントラストＧHは2.05 ＬＳ面:カブリ＋0.3の濃度とカブリ＋0.6の濃度を結ぶ
コントラストＧLは1.25 ＨＳ面に現像後の濃度がカブリ＋1.1の濃度となる露光
量を露光した場合のＬＳ面の濃度はカブリ＋0.08であっ
た。本発明試料に該当する。HS surface: Fog +0.5 density and fog +1.3
The contrast G H connecting the densities is 2.05 LS surface: The contrast G L connecting the densities of fog +0.3 and fog +0.6 is the exposure amount at which the density after development is the fog +1.1 on the 1.25 HS surface. The density of the LS surface when exposed to light was fog +0.08. It corresponds to the sample of the present invention.
【０１１７】・塗布フィルムNo.Vは支持体の両側の乳剤
面の特性は異なり、ＨＳ面の相対感度ＳHは68、ＬＳ面
の相対感度ＳLは104であった。The coated film No. V had different emulsion surface characteristics on both sides of the support, and the relative sensitivity S H on the HS surface was 68 and the relative sensitivity S L on the LS surface was 104.
【０１１８】ＨＳ面:カブリ＋0.5の濃度とカブリ＋1.3
の濃度を結ぶコントラストＧHは1.28 ＬＳ面:カブリ＋0.3の濃度とカブリ＋0.6の濃度を結ぶ
コントラストＧLは1.20 ＨＳ面に現像後の濃度がカブリ＋1.0の濃度となる露光
量を露光した場合のＬＳ面の濃度はカブリ＋0.33であっ
た。塗布フィルムNo.Vは、ＨＳ面に現像後の濃度がカブ
リ＋1.1の濃度となる露光量を露光した場合のＬＳ面の
濃度はカブリ＋0.20を越えている。従って、本発明試料
には該当しない。HS surface: Fog +0.5 density and fog +1.3
The contrast G H connecting the densities is 1.28 LS surface: The contrast G L connecting the densities of fog +0.3 and fog +0.6 is the exposure amount at which the density after development on the 1.20 HS surface is the fog +1.0 density. The density of the LS surface when exposed to light was fog +0.33. In the coating film No. V, the density of the LS surface exceeds the fog +0.20 when the HS surface is exposed to an exposure amount such that the density after development becomes the density of fog +1.1. Therefore, it does not correspond to the sample of the present invention.
【０１１９】・塗布フィルムNo.VIは支持体の両側の乳
剤面の特性は異なり、ＨＳ面の相対感度ＳHは99、ＬＳ
面の相対感度ＳLは104であった。The coating film No. VI has different emulsion surface characteristics on both sides of the support, and the relative sensitivity S H on the HS surface is 99, LS
The relative sensitivity S L of the surface was 104.
【０１２０】ＨＳ面:カブリ＋0.5の濃度とカブリ＋1.3
の濃度を結ぶコントラストＧHは1.75 ＬＳ面:カブリ＋0.3の濃度とカブリ＋0.6の濃度を結ぶ
コントラストＧLは１．６５ ＨＳ面に現像後の濃度がカブリ＋１．１の濃度となる露
光量を露光した場合のＬＳ面の濃度はカブリ＋0.09であ
った。本発明試料に該当する。HS surface: Fog +0.5 density and fog +1.3
The contrast GH connecting the densities is 1.75 LS surface: The contrast GL connecting the densities of fog +0.3 and fog +0.6 is 1.65 HS surface and the density after development is fog +1.1. When the exposure amount was exposed, the density on the LS surface was fog +0.09. It corresponds to the sample of the present invention.
【０１２１】・塗布フィルムNo.VIIは支持体の両側の乳
剤面の特性は異なり、ＨＳ面の相対感度ＳHは99、ＬＳ
面の相対感度ＳLは66であった。The coating film No. VII has different emulsion surface characteristics on both sides of the support, and the relative sensitivity S H on the HS surface is 99, LS
The relative sensitivity S L of the surface was 66.
【０１２２】ＨＳ面:カブリ＋0.5の濃度とカブリ＋1.3
の濃度を結ぶコントラストＧHは1.75 ＬＳ面:カブリ＋0.3の濃度とカブリ＋0.6の濃度を結ぶ
コントラストＧLは1.45 ＨＳ面に現像後の濃度がカブリ＋ 1.1の濃度となる露光
量を露光した場合のＬＳ面の濃度はカブリ＋0.05であっ
た。塗布フィルムNo.VIIは、ＨＳ面の相対感度がＬＳ面
の相対感度より高い。従って、本発明試料には該当しな
い。HS surface: Fog +0.5 density and fog +1.3
The contrast GH connecting the densities is 1.75 LS surface: The contrast GL connecting the densities of fog +0.3 and fog +0.6 is the exposure amount at which the density after development is the fog +1.1 on the 1.45 HS surface. When exposed, the density of the LS surface was fog +0.05. The relative sensitivity of the coated film No. VII on the HS surface is higher than that on the LS surface. Therefore, it does not correspond to the sample of the present invention.
【０１２３】・塗布フィルムNo.VIIIは支持体の両側の
乳剤面の特性は異なり、ＨＳ面の相対感度ＳHは66、Ｌ
Ｓ面の相対感度ＳLは105であった。The coating film No. VIII has different characteristics on the emulsion side on both sides of the support, and the relative sensitivity S H on the HS side is 66, L
The relative sensitivity S L of the S surface was 105.
【０１２４】ＨＳ面:カブリ＋0.5の濃度とカブリ＋1.3
の濃度を結ぶコントラストＧHは1.75 ＬＳ面:カブリ＋0.3の濃度とカブリ＋0.6の濃度を結ぶ
コントラストＧLは1.15 ＨＳ面に現像後の濃度がカブリ＋1.1の濃度となる露光
量を露光した場合のＬＳ面の濃度はカブリ＋0.05であっ
た。本発明試料に該当する。HS surface: Fog +0.5 density and fog +1.3
The contrast G H connecting the densities is 1.75 LS surface: The contrast G L connecting the densities of fog +0.3 and fog +0.6 is 1.75 HS surface and the exposure amount that the density after development is the fog +1.1 density When exposed to light, the density on the LS surface was fog +0.05. It corresponds to the sample of the present invention.
【０１２５】・塗布フィルムNo.IXは支持体の両側の乳
剤面の特性は異なり、ＨＳ面の相対感度ＳHは88、ＬＳ
面の相対感度ＳLは105であった。The coating film No. IX has different emulsion surface characteristics on both sides of the support, and the relative sensitivity S H on the HS surface is 88 and LS.
The relative sensitivity S L of the surface was 105.
【０１２６】ＨＳ面:カブリ＋0.5の濃度とカブリ＋1.3
の濃度を結ぶコントラストＧHは1.38 ＬＳ面:カブリ＋0.3の濃度とカブリ＋0.6の濃度を結ぶ
コントラストＧLは1.15 ＨＳ面に現像後の濃度がカブリ＋1.10の濃度となる露光
量を露光した場合のＬＳ面の濃度はカブリ＋0.19であっ
た。ＧHが本発明試料に該当しない。従って本発明試料
に該当しない。HS surface: Fog +0.5 density and fog +1.3
Contrast G H that connects the densities is 1.38 LS surface: Contrast G L that connects the densities of fog +0.3 and fog +0.6 is 1.15 HS surface and the exposure amount that the density after development is the fog +1.10 density The density of the LS surface when exposed to light was fog +0.19. G H does not correspond to the sample of the present invention. Therefore, it does not correspond to the sample of the present invention.
【０１２７】・塗布フィルムNo.Xは支持体の両側の乳剤
面の特性は異なり、ＨＳ面の相対感度ＳHは87、ＬＳ面
の相対感度ＳLは103であった。The coating film No. X had different emulsion surface characteristics on both sides of the support, and the relative sensitivity S H on the HS surface was 87 and the relative sensitivity S L on the LS surface was 103.
【０１２８】ＨＳ面:カブリ＋0.5の濃度とカブリ＋1.3
の濃度を結ぶコントラストＧHは1.51 ＬＳ面:カブリ＋0.3の濃度とカブリ＋0.6の濃度を結ぶ
コントラストＧLは1.15 ＨＳ面に現像後の濃度がカブリ＋1.1の濃度となる露光
量を露光した場合のＬＳ面の濃度はカブリ＋0.17であっ
た。本発明試料に該当する。HS surface: Fog +0.5 density and fog +1.3
Contrast G H that connects the densities is 1.51 LS surface: Contrast G L that connects the densities of fog +0.3 and fog +0.6 is 1.15 The exposure amount that makes the density after development on the HS surface fog +1.1. The density of the LS surface when exposed to light was fog +0.17. It corresponds to the sample of the present invention.
【０１２９】・塗布フィルムNo.XIは支持体の両側の乳
剤面の特性は異なり、ＨＳ面の相対感度ＳHは87、ＬＳ
面の相対感度ＳLは103であった。The coating film No. XI has different emulsion surface characteristics on both sides of the support, and the relative sensitivity S H on the HS surface is 87, LS
The relative sensitivity S L of the surface was 103.
【０１３０】ＨＳ面:カブリ＋0.5の濃度とカブリ＋1.3
の濃度を結ぶコントラストＧHは1.51 ＬＳ面:カブリ＋0.3の濃度とカブリ＋0.6の濃度を結ぶ
コントラストＧLは1.15 ＨＳ面に現像後の濃度がカブリ＋1.1の濃度となる露光
量を露光した場合のＬＳ面の濃度はカブリ＋0.17であっ
た。本発明試料に該当する。HS surface: Fog +0.5 density and fog +1.3
Contrast G H that connects the densities is 1.51 LS surface: Contrast G L that connects the densities of fog +0.3 and fog +0.6 is 1.15 The exposure amount that makes the density after development on the HS surface fog +1.1. The density of the LS surface when exposed to light was fog +0.17. It corresponds to the sample of the present invention.
【０１３１】・塗布フィルムNo.XIIは支持体の両側の乳
剤面の特性は異なり、ＨＳ面の相対感度ＳHは66、ＬＳ
面の相対感度ＳLは105であった。The coating film No. XII has different emulsion surface characteristics on both sides of the support, and the relative sensitivity S H on the HS surface is 66, LS
The relative sensitivity S L of the surface was 105.
【０１３２】ＨＳ面:カブリ＋0.5の濃度とカブリ＋1.3
の濃度を結ぶコントラストＧHは1.75 ＬＳ面:カブリ＋0.3の濃度とカブリ＋0.6の濃度を結ぶ
コントラストＧLは0.85 ＨＳ面に現像後の濃度がカブリ＋1.1の濃度となる露光
量を露光した場合のＬＳ面の濃度はカブリ＋0.15であっ
た。塗布フィルムNo.XIIは、ＬＳ面の相対感度がＨＳ面
の相対感度より高い。また、ＨＳ面に現像後の濃度がカ
ブリ＋1.1の濃度となる露光量を露光した場合のＬＳ面
の濃度はカブリ＋0.20以下である。しかし、ＬＳ面のＧ
Lは1.10未満であるので本発明試料には該当しない。HS surface: Fog +0.5 density and fog +1.3
The contrast G H connecting the densities is 1.75 LS surface: The contrast G L connecting the densities of fog +0.3 and fog +0.6 is the exposure amount at which the density after development on the 0.85 HS surface is the fog +1.1 density. The density of the LS surface when exposed to light was fog +0.15. Coating film No. XII has a relative sensitivity on the LS surface higher than that on the HS surface. Further, when the HS surface is exposed to an exposure amount such that the density after development becomes a density of fog + 1.1, the density of the LS surface is fog + 0.20 or less. However, G on the LS side
Since L is less than 1.10, it does not correspond to the sample of the present invention.
【０１３３】これらのフィルムを用い、次の表２に示し
た如く蛍光増感紙を用いて感度、コントラストを求め
た。Using these films, the sensitivity and contrast were determined by using a fluorescent intensifying screen as shown in Table 2 below.
【０１３４】なお、コニカ〔株〕販売の蛍光増感紙SRO-
125，SRO-250およびSRO-500はフロント用とバック用で
１組となっている。表１において支持体の両面に同一性
能を持ったフィルムNo.ＩおよびIIはフロント面にはフ
ロント用を、バック面にはバック用を用いた。支持体の
両面に異なる特性を持ったフィルムNo.III〜XIIは何れ
も全てバック用を用いた。Fluorescent intensifying screen SRO- sold by Konica Corporation
125, SRO-250 and SRO-500 are one set for front and back. In Table 1, film Nos. I and II having the same performance on both sides of the support were used for the front side and for the back side. Film Nos. III to XII having different properties on both sides of the support were all used for the back.
【０１３５】〈システム感度とシステムガンマの求め
方〉得られた試料の感度測定は試料の片面および両面に
感度（発光度）の異なる増感紙を組み合わせて露光し
た。得られた試料の相対感度は、カブリ＋1.0の濃度を
得るに必要なＸ線量の逆数として求めた。表２の試料１
の感度を80とした場合の相対感度で表している。又、コ
ントラスト（システムガンマ）は（カブリ＋濃度0.25）
と（カブリ＋濃度2.0）を与えるＸ線量の逆数の対数の
差に（１／(2.00−0.25)）を乗じた数値の逆数から求め
た。<Method of Obtaining System Sensitivity and System Gamma> For sensitivity measurement of the obtained sample, exposure was performed by combining intensifying screens having different sensitivities (luminosity) on one side and both sides of the sample. The relative sensitivity of the obtained sample was obtained as the reciprocal of the X-ray dose required to obtain the density of fog + 1.0. Sample 1 in Table 2
It is expressed as relative sensitivity when the sensitivity of is set to 80. Also, the contrast (system gamma) is (fog + density 0.25)
And the reciprocal of the logarithm of the reciprocal of the X-ray dose that gives (fog + concentration 2.0) was multiplied by (1 / (2.00−0.25)).
【０１３６】〈ＳL′、ＳL、ＳH′およびＳHの求め方〉
最高濃度の高い面から蛍光増感紙を用いて露光した場合
の最高濃度の低い面の感度ＳL′および、該最高濃度の
低い面から蛍光増感紙を用いて露光した場合の感度ＳL
は、最高濃度の高い面の感光層を蛋白質分解酵素で除去
することで求めた。また、最高濃度の低い面から蛍光増
感紙を用いて露光した場合の最高濃度の高い面の感度Ｓ
H′と、該最高濃度の高い面から蛍光増感紙を用いて露
光した場合の感度ＳHは、最高濃度の低い面の感光層を
蛋白質分解酵素で除去することで求めた。<How to obtain S L ′, S L , S H ′ and S H >
Sensitivity S L 'and the highest concentrations of low surface when the light exposure using the fluorescent intensifying screen from the highest concentration of high surface, from a low surface of highest-density in the case of exposure using a fluorescent intensifying screen sensitivity S L
Was determined by removing the photosensitive layer on the surface with the highest concentration with a proteolytic enzyme. The sensitivity S of the surface with the highest maximum density when exposed with a fluorescent intensifying screen from the surface with the lowest maximum density
And H ', the sensitivity S H in the case of exposure using a fluorescent intensifying screen from a higher highest-density surface was determined by removing the photosensitive layer of the lower surface of the highest concentration in protease.
【０１３７】ＳL′、ＳL、ＳHは、最高濃度からカブリ
濃度を引いた値に0.4を乗じ、さらにカブリ濃度を足し
た値の濃度を得るのに必要なＸ線量の逆数として求め
た。S L ′, S L and S H were obtained as the reciprocal of the X-ray dose required to obtain the density obtained by multiplying the maximum density minus the fog density by 0.4 and further adding the fog density. ..
【０１３８】[0138]
【表２】 [Table 2]
【０１３９】表２から明らかなように本発明の試料は、
ＨＳ面のみに増感紙を用いて撮影すれば鮮鋭性の高い画
像が得られ、ＬＳ面に高感度増感紙を、ＨＳ面に低感度
増感紙を用いて撮影することで鮮鋭性と粒状性が改良さ
れ、高感度が得られる。又、ＬＳ面に低感度増感紙を、
ＨＳ面に高感度、低感度増感紙を用いて撮影することで
高いコントラストの写真が得られ、粒状性と鮮鋭性のい
ずれも良好であることが分かる。As is clear from Table 2, the samples of the present invention are:
An image with high sharpness can be obtained by shooting with an intensifying screen only on the HS side, and sharpness can be obtained by shooting with a high-sensitizing intensifying screen on the LS side and a low-sensitizing intensifying screen on the HS side. The graininess is improved and high sensitivity is obtained. Also, a low-sensitivity intensifying screen on the LS side
It can be seen that a high-contrast photograph can be obtained by photographing with a high-sensitivity and low-sensitivity intensifying screen on the HS surface, and that both graininess and sharpness are good.
【０１４０】ＨＳ面の最高濃度が1.80に満たないフィル
ムNo.Vを用いて撮影した試料No.14は、ＨＳ面にのみ増
感紙を用いて撮影する場合に濃度1.6以上の画像の鮮鋭
性が悪く、ＨＳ面の最高濃度が1.80以上のフィルム試料
VIIIを用いた試料No.18に対して濃度1.7以上の部位の鮮
鋭性が劣っていた。The sample No. 14 photographed using the film No. V whose maximum density on the HS side was less than 1.80 was sharp when the image was recorded only on the HS side using the intensifying screen. Is bad and the film sample has a maximum HS surface density of 1.80 or more.
The sharpness of the parts with a concentration of 1.7 or more was inferior to that of sample No. 18 using VIII.
【０１４１】ＨＳ面が感度の高いフィルムNo.IIIをＨＳ
面のみに増感紙を密着して撮影した試料No.６はＬＳ面
の感度が低いためにＨＳ面からの透過光で画像形成する
ＬＳ面の濃度が得にくく、ＬＳ面が形成する高濃度部の
濃度が低下してしまうために濃度1.7以上のコントラス
トが低くなり表２のシステムコントラストが低い値にな
ってしまった。同様にＨＳ面の方が感度の高いフィルム
No.VIIもＨＳ面のみに増感紙を密着して撮影した場合、
濃度1.8以上のコントラストが低くなってしまった。Film No. III with high sensitivity on the HS surface
Sample No. 6 photographed with the intensifying screen in close contact with only the surface has a low sensitivity on the LS surface, so it is difficult to obtain the density of the LS surface for image formation with the transmitted light from the HS surface, and the high density formed by the LS surface Since the density of the part is reduced, the contrast of the density of 1.7 or more becomes low, and the system contrast in Table 2 becomes a low value. Similarly, the film with higher sensitivity on the HS side
For No.VII, when the intensifying screen is attached to the HS side only,
The contrast of density 1.8 or higher is low.
【０１４２】試料No.19は、本発明の試料であるがＨＳ
面のコントラストが低いためにＬＳ面に高感度増感紙
を、ＨＳ面に低感度増感紙を用いて撮影した場合、濃度
1.2以下写真のコントラストが低くなってしまい、鮮鋭
性が悪く見えてしまった。Sample No. 19 is the sample of the present invention,
When the high-sensitivity screen is used for the LS surface and the low-sensitivity screen is used for the HS surface because the contrast of the surface is low, the density
1.2 or less The contrast of the photograph became low and the sharpness looked bad.
【０１４３】尚、表裏の乳剤の構成が異なるフィルムN
o.III〜XIIにはＨＳ面とＬＳ面を暗室のセーフライト光
下で視覚的に識別するために先に記載の染料をＬＳ面に
添加したが、ハイライト（コニカ〔株〕販売のセーフラ
イト）を使用の下でＬＳ面が黒く見えることによりＬＳ
面を識別できた。Film N having different emulsion structures on the front and back sides
In o.III to XII, the above-mentioned dye was added to the LS surface in order to visually distinguish the HS surface and the LS surface under the safelight light in a dark room. LS surface looks black under the use of LS)
The faces could be identified.
【０１４４】このように本発明のフィルムでは、１種類
のフィルムで発光強度の異なる増感紙を目的に合わせて
選択して撮影することで様々なコントラストの写真が得
られる。従って、撮影部位や目的に合わせて多くの種類
のフィルムを所有する必要がなく、在庫管理が容易でフ
ィルム品種の誤使用も避けられる。As described above, with the film of the present invention, photographs of various contrasts can be obtained by selecting intensifying screens having different light emission intensities with one kind of film according to the purpose and photographing. Therefore, it is not necessary to own many kinds of films according to the photographed part and the purpose, inventory management is easy, and misuse of film types can be avoided.
【０１４５】本発明の感光材料は、医用診断機器のハー
ドコピーを撮影するためのイメージングカメラ撮影用感
光材料、レーザーイメジャー撮影用感光材料や間接Ｘ線
撮影用感光材料などにも適用でき、高感度化や迅速処理
適性を付与させながらも従来の片面乳剤感光材料と何等
変わりのない画質が得られる。The light-sensitive material of the present invention can be applied to a light-sensitive material for photographing with an imaging camera for photographing hard copies of medical diagnostic equipment, a light-sensitive material for laser image measurement, a light-sensitive material for indirect X-ray photography, and the like. While imparting sensitivity and suitability for rapid processing, an image quality that is no different from conventional single-sided emulsion light-sensitive materials can be obtained.
【０１４６】[0146]
【発明の効果】本発明により、一つのフィルムで撮影目
的に合わせた特性が得られるＸ線用ハロゲン化銀写真感
光材料を得られた。又、本発明によりフィルムの両面に
用いるフロント用とバック用の２枚の増感紙のそれぞれ
の組み合わせを変えることにより高感度、高鮮鋭性で、
かつ粒状性の優れた画像が得られるＸ線用ハロゲン化銀
写真感光材料およびその画像形成方法を提供することが
できた。Industrial Applicability According to the present invention, a silver halide photographic light-sensitive material for X-ray can be obtained which can obtain the characteristics suitable for the purpose of photographing with one film. Further, according to the present invention, by changing the combination of each of the front and back intensifying screens used on both sides of the film, high sensitivity and high sharpness,
Further, it was possible to provide a silver halide photographic light-sensitive material for X-rays and an image forming method thereof, which can obtain an image with excellent graininess.
Claims (12)
ぞれから形成された画像の最高濃度が異なり、最高濃度
の高い面の最高濃度は1.80以上であり、該最高濃度の高
い面側から現像後の最高濃度の高い面の濃度がカブリ＋
1.10の濃度となる露光量で露光した場合に、最高濃度の
低い面の濃度がカブリ＋0.20以下であることを特徴とす
るハロゲン化銀写真感光材料であり、最高濃度が高い面
の感度（ＳH）が裏面（ＳL）より低感度であり、最高濃
度の高い面側から蛍光増感紙を用いて露光した場合の最
高濃度の高い面のカブリ＋0.5の濃度とカブリ＋1.3の濃
度の２点を結ぶ直線のコントラスト（ＧH）が1.50以
上、2.90以下であり、最高濃度の低い面から蛍光増感紙
を用いて露光した場合の最高濃度の低い面の特性曲線の
カブリ＋0.3の濃度とカブリ＋0.6の濃度の２点を結ぶ直
線のコントラストが1.10以上であることを特徴とするハ
ロゲン化銀写真感光材料。ＳH、ＳLともに次の式の濃度
を得るのに必要な露光量の逆数として求めた値である。 [（最高濃度−カブリ濃度）×0.4］＋カブリ濃度1. The maximum density of an image formed from each emulsion surface on both sides of a transparent support is different, and the maximum density of the surface having a high maximum density is 1.80 or more, and development is performed from the surface side having a high maximum density. Fog on the surface with the highest maximum density after
This is a silver halide photographic light-sensitive material characterized in that the density of the surface with the lowest maximum density is fog +0.20 or less when exposed with an exposure amount of 1.10, and the sensitivity of the surface with the highest maximum density ( S H ) has lower sensitivity than the back surface (S L ), and when exposed using a fluorescent intensifying screen from the side with the highest density, the surface with the highest density has a fog of +0.5 and a fog of +1.3. The contrast ( GH ) of the straight line connecting the two density points is 1.50 or more and 2.90 or less. Fog of the characteristic curve of the surface with the lowest maximum density when exposed with a fluorescent intensifying screen from the surface with the lowest density. A silver halide photographic light-sensitive material characterized in that the contrast of a straight line connecting two points of +0.3 density and fog +0.6 density is 1.10 or more. S H, is a value determined as a reciprocal of the exposure amount necessary for S L together to obtain the concentration of the following formula. [(Maximum density-fog density) x 0.4] + fog density
用いて露光した場合の最高濃度の低い面の感度ＳL′
と、該最高濃度の低い面から蛍光増感紙を用いて露光し
た場合の感度ＳLの比である（ＳL′／ＳL）値が0.12以
上であることを特徴とする請求項１記載のハロゲン化銀
写真感光材料。2. The sensitivity S L ′ of the surface having the lowest maximum density when exposed from the surface having the highest density using a fluorescent intensifying screen.
2. The (S L ′ / S L ) value, which is the ratio of the sensitivity S L when exposed using a fluorescent intensifying screen from the surface having the lowest maximum density, is 0.12 or more. Silver halide photographic light-sensitive material.
用いて露光した場合の最高濃度の低い面の感度ＳL′
と、該最高濃度の低い面から蛍光増感紙を用いて露光し
た場合の感度ＳLの比（ＳL′／ＳL）が0.12以上であ
り、前記最高濃度の低い面から蛍光増感紙を用いて露光
した場合の最高濃度の高い面の感度ＳH′と、該最高濃
度の高い面から蛍光増感紙を用いて露光した場合の感度
ＳHの比（ＳH′／ＳH）が0.35以下であることを特徴と
する請求項２記載のハロゲン化銀写真感光材料。3. The sensitivity S L ′ of the surface having the lowest maximum density when exposed from the surface having the highest maximum density using a fluorescent intensifying screen.
And the ratio (S L ′ / S L ) of the sensitivity S L when exposed using a fluorescent intensifying screen from the surface with the lowest maximum density is 0.12 or more. 'the ratio of the sensitivity S H when the were exposed with a fluorescent intensifying screen from a higher highest-density surface (S H' sensitivity S H of the highest concentrations of high surface when the light exposure using the / S H) Is 0.35 or less, and the silver halide photographic light-sensitive material according to claim 2, wherein
を用いて露光した場合に最高濃度の高い面と最高濃度の
低い面の合計で形成する特性曲線が、カブリ＋0.25の濃
度とカブリ＋2.0の濃度の２点を結ぶ直線のコントラス
ト（ＧW）が2.10以上、2.90以下であることを特徴とす
る請求項２記載のハロゲン化銀写真感光材料。4. The characteristic curve formed by the sum of the surface with the highest maximum density and the surface with the lowest maximum density when a fluorescent intensifying screen is used to expose only the surface with the highest density is fog +0.25 density. 3. The silver halide photographic light-sensitive material according to claim 2, wherein the contrast (G W ) of a straight line connecting two points of density of fog +2.0 is 2.10 or more and 2.90 or less.
を隣接させて露光することを特徴とする請求項２記載の
ハロゲン化銀写真感光材料の画像形成方法。5. The method of forming an image of a silver halide photographic light-sensitive material according to claim 2, wherein the fluorescent intensifying screen is exposed adjacent to only the surface having the highest maximum density.
写真感光材料の両面にそれぞれ各１枚の蛍光増感紙を隣
接させて露光することを特徴とする画像形成方法。6. An image forming method comprising exposing one side of each of the silver halide photographic light-sensitive materials according to claim 1 or 2 to a fluorescent intensifying screen adjacent thereto.
の低い面に高感度蛍光増感紙を隣接させ、最高濃度の高
い面に低感度蛍光増感紙を隣接させて露光することを特
徴とするハロゲン化銀写真感光材料の画像形成方法。7. A light-sensitive material according to claim 3, wherein a high-sensitivity fluorescent intensifying screen is adjacent to a surface having a low maximum density, and a low-sensitive fluorescent intensifying screen is adjacent to a surface having a high maximum density. A method for forming an image on a silver halide photographic light-sensitive material, which is characterized.
の高い面に高感度蛍光増感紙を隣接させ、最高濃度の低
い面に低感度蛍光増感紙を隣接させて露光することを特
徴とするハロゲン化銀写真感光材料の画像形成方法。8. A light-sensitive material according to claim 3, wherein a high-sensitivity fluorescent intensifying screen is adjacent to a surface having a high maximum density, and a low-sensitive fluorescent intensifying screen is adjacent to a surface having a low maximum density. A method for forming an image on a silver halide photographic light-sensitive material, which is characterized.
面に投影面積の50％以上がアスペクト比３以上の平板状
のハロゲン化銀粒子で形成される乳剤層を有することを
特徴とする請求項１、２及び３記載のハロゲン化銀写真
感光材料。9. An emulsion layer having tabular silver halide grains having an aspect ratio of 3 or more in an area of 50% or more of the projected area is provided on a surface having a high maximum density and a surface having a low maximum density. Item 3. A silver halide photographic light-sensitive material according to items 1, 2 and 3.
ムサルファオキサイド：テルビウム（Ｇd2Ｏ2Ｓ:Ｔb）
を用いた増感紙を用いた場合に前記最高濃度の高い面か
ら蛍光増感紙を用いて露光した場合の最高濃度の低い面
の感度ＳL′と、該最高濃度の低い面から蛍光増感紙を
用いて露光した場合の感度ＳLの比（ＳL′／ＳL）が0.1
2以上であり、前記最高濃度の低い面から蛍光増感紙を
用いて露光した場合の最高濃度の高い面の感度ＳH′
と、該最高濃度の高い面から蛍光増感紙を用いて露光し
た場合の感度ＳHの比（ＳH′／ＳH）が0.35以下である
ことを特徴とする請求項４記載のハロゲン化銀写真感光
材料。10. A gadolinium sulfoxide: terbium (Gd 2 O 2 S: Tb) as a phosphor of a fluorescent intensifying screen.
When the intensifying screen using the above is used, the sensitivity S L ′ of the surface with the lowest maximum density when exposed with the fluorescent intensifying screen from the surface with the highest maximum density, and the fluorescence enhancement from the surface with the lowest maximum density. The ratio of sensitivity S L (S L ′ / S L ) when exposed using a sensitive paper is 0.1
2 or more, and the sensitivity S H ′ of the surface with the highest maximum density when exposed using a fluorescent intensifying screen from the surface with the lowest maximum density
5. The halogenation according to claim 4, wherein the ratio (S H ′ / S H ) of the sensitivity S H when exposed using a fluorescent intensifying screen from the surface of the highest maximum density is 0.35 or less. Silver photographic light-sensitive material.
高濃度の高い面の感度（ＳH）よりも1.05倍以上、1.90
以下であることを特徴とする請求項４記載のハロゲン化
銀写真感光材料。11. The sensitivity (S L ) of the surface having the lowest maximum density is 1.05 times or more than the sensitivity (S H ) of the surface having the highest maximum density, which is 1.90.
The silver halide photographic light-sensitive material according to claim 4, wherein:
性ハロゲン化銀乳剤層を有し、かつ支持体の両面の写真
特性が異なる乳剤層を有する感光材料において、支持体
の片側の面の少なくとも１層に、545nmの波長の光より
も560nm以上、700nm以下の波長の光に高い吸収を持つ物
質を多く含有することを特徴とするハロゲン化銀写真感
光材料。12. A light-sensitive material having at least one light-sensitive silver halide emulsion layer on both sides of a support, and emulsion layers having different photographic characteristics on both sides of the support. A silver halide photographic light-sensitive material, characterized in that at least one layer contains a large amount of a substance having a higher absorption of light having a wavelength of 560 nm or more and 700 nm or less than light having a wavelength of 545 nm.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18641491 | 1991-07-25 | ||
| JP3344892 | 1992-02-20 | ||
| JP4-33448 | 1992-02-20 | ||
| JP3-186414 | 1992-02-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05297490A true JPH05297490A (en) | 1993-11-12 |
Family
ID=26372135
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16295792A Pending JPH05297490A (en) | 1991-07-25 | 1992-06-22 | Silver halide photographic sensitive material with which image quality and gradation are selectable so as to meet purpose of photographing and its image forming method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05297490A (en) |
-
1992
- 1992-06-22 JP JP16295792A patent/JPH05297490A/en active Pending
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