CA1168074A - X-ray film cassette - Google Patents
X-ray film cassetteInfo
- Publication number
- CA1168074A CA1168074A CA000400100A CA400100A CA1168074A CA 1168074 A CA1168074 A CA 1168074A CA 000400100 A CA000400100 A CA 000400100A CA 400100 A CA400100 A CA 400100A CA 1168074 A CA1168074 A CA 1168074A
- Authority
- CA
- Canada
- Prior art keywords
- cassette
- ray film
- film
- lid
- pressure plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B42/00—Obtaining records using waves other than optical waves; Visualisation of such records by using optical means
- G03B42/02—Obtaining records using waves other than optical waves; Visualisation of such records by using optical means using X-rays
- G03B42/04—Holders for X-ray films
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radiography Using Non-Light Waves (AREA)
- Apparatus For Radiation Diagnosis (AREA)
Abstract
PHD 81.043 7 ABSTRACT:
An X-ray film cassette with a lid which is pivotable with respect to a bottom; therebetween an X-ray film which bears on a pivotable film pressure plate can be introduced, the film being retained clear of the bottom and the lid by means of springs which bear against the bottom as well as against the lid. The X-ray film comprises an edge region which projects from the film pressure plate so that it can be engaged by transport rollers. In the X-ray film cassette in accordance with the invention, sticking of the X-ray film is avoided.
An X-ray film cassette with a lid which is pivotable with respect to a bottom; therebetween an X-ray film which bears on a pivotable film pressure plate can be introduced, the film being retained clear of the bottom and the lid by means of springs which bear against the bottom as well as against the lid. The X-ray film comprises an edge region which projects from the film pressure plate so that it can be engaged by transport rollers. In the X-ray film cassette in accordance with the invention, sticking of the X-ray film is avoided.
Description
1 1680~4 PHD 81~043 l 1.3.1982 X-ra~ film cassette.
The invention relates to an X-rav film cassette, comprising a storage space for an X-rav film which is situated between a bottom and a lid which is pivotabl~
connected thereto 7 the cassette comprising a locking mechanism which defines the mutual positi~n of the bottom and the lid in the open as well as in the closed condition of the cassette, the cassette comprising spring means which retain the X-ra~ film in a fixed position with respect to the bottom and the lid in the closed condition of the cassette and which release the X-ra~ film for transp~t from the cassette in the open condition of the cassette.
For the unloading of a known X-ra~ film cassette of the kind set forth (British Patent Specification 1~5~,75O)~ the cassette is coupled, with i-ts side which is to be opened direoted downwards~ to a film development apparatus which also opens the cassette. To this end, the X-.ra~ film should become loose in the cassette so that it drops between transport rollers of the film developrnent apparatus under the influence of gravity.
It is a drawback of the known X ray film cassette that it cannot be unloaded in the horizontal position. A further drawback consists in that after the opening of the cassette, the X-ray film is liable to adhere to an intensifier screen contacted under pressure by the X-ra~ film in the closed condition of the cassette.
It is an obJect of the invention to provide an X-ray film cassette in which said drawbacks are mitigated.
To this end, an X-ra~v film cassette in accordance with the invention is characterized in that the bottom of the cassette comprises at least one spring which brings the X-ra~ film in the vicinit~ of its transport position~
.
, 1 ~68~74 P~ID 81.043 2 1.3. 1982 the lid comprising at least one spring for disengaging a combina-tion consisting of the X-ray film and a film pressure plate from a further film pressure plate, connected to the lid, and an intensifier screen, the 5 dimensions of the X-ra~ film being larger than the dimensions of the film pressure plate~ an edge region of the X-ray film thus remaining free to be engaged b~
transport means.
The in~ention will be described in detail hereinafter with reference to the drawing~ Therein:
Figure 1 is a longitudinal sectional view of an X-ra~ film cassette in accordance with the invention, and Figure 2 is a perspective view of a part of the X-ra~ film cassette shown in Flgure 1.
The X_rar film cassette 1 whose opening side is placed in a defined position in the figures (at the right) during loading and unloading~ for example, b~
pressing against an abutment 3 ( see Figure 2) by means of a spring 2~ comprises a lower portion 4 and a lid 5. The lower portion 4 comprises a peripheral rectangular U-profile 7a which has an open upper side and which is closed in a light-tight manner in the downwards direction b~ a bottom 7b. The lid 5 comprises a rectangular cover plate 6a which is enclosed b~ a wall 7 which is perpendi-cular to the plate. In the closed condition of the cassette, the wall 7 is situated between the U-profile 6 and the U-profile 7a, so that a so-called lab~rinth is formed and ingress of light is precluded (see figure 2).
l`he lid 5 is pivotably connected to the lower portion 4 b~ means of a hinge 8 which is secured to the lower portion 4 an~ to the lid 5 opposite the opening side of the cassette (i.e. at -the left in Figure 1). A plate-shaped member 9 of an elastic materialq for example, a foam~ plastics is connected to the inner side of the lid 5, the side of said member which faces the lower por-tion 4 of the cassette comprising an intensifier screen 9a 1 16~07~
PHD 81.043 3 1~3.1982 (see Figure 1) whereagainst an X~ray film 21 is pressed in the closed condition of the cassette.
For the opening and closing of the cassette, a locking mechanisrn is provided between the U-profile 6 and the U-profile 7a on each of the two oppositely situa-ted sides (the ~igures show only the front mechanism), said locking mechanism comprising a slide 9c ~hich is coupled to an arm 10 which is pivotably connected $o the lid 5and the slide 9c. 1~hen the slide 9c is displaced, the lid is opened or closed. To this end, two guide pins 11 and l2 (Figure 2) which are rigidly connected to the lower portion 4 engage in two slotted holes 13 and 14 of the slide 9c. Therefore, the slide 9c can be displaced only in the direc-tion perpendicularly to the pivot axis of the lid. ~hen the cassette is closed~ the slide 9c is slid forwards (to the right in Figure 2) by a spring 15, a locking cam 16 on the front end of the slide 9c then engaging behind a pin 17 on the lid 5.
For the opening o~ the cassette, each o~ the two pins 18 (only one of which is shown in Figure 2)~ is slid into an opening 26 in the U-profile 7a, ~or example, by means of a pneurnatic drive cylinder, so that the slide 9c i9 moved ~rom the opening side towards the pivot axis of the lid 5 agalnst the force of the spring 15. During this movement~ ~irst a pin 19 which is mounted on the arm lO
is displaced in a ~urther slotted hole 20 in the slide 9c until the pin l9 contacts the right end wall of the slotted hole 20, the lid 5 being pivoted upwards about the axis of the hinge 8 when the slide 9c is displaced ~urther.
In the closed condition of the cassette~ the X-ray film 21 is situated in -the part of the lo~er portion 4 which is enclosed by the U-profile 6 and rests on a pressure plate (22, 23) which comprises a plate-shaped body 22 of, for example, a ~oamy plastics which is glued on to a plate 23. The plate 23 is pivotable at the left-hand side (in a manner not shown for the sake of clarity) about an axis which is parallel to the pivot axis 1 168~74 PHD 81.043 ~ 1.3.1982 of the lid 5. The film pressure plate consisting o~ the plate 23 and the plate-shaped body 22, preferably compri-sing an intensifier screen (not shown)~ is shorter than the X-ray film 21, so that at the right-hand side (~igure 1) of the X-ray film an edge region 23a remains which does not bear on the pressure plate (22~ 23).
Between the lower portion 4 and the pressure plate consisting of the. parts 22 and 23 there are provided spring means which comprise several blade springs 27~ so . l that in the opened condition of the cassette the pressure plate (22, 23) is pivoted forwards, with the result that the pressure plate and notably the projecting edge region (23a) of the X-ray film 21 disengage from the bottom 7b of the lower portion 4 or the lid 5. l'he freely projec-lS ting edge region 23a of the X-ray ~ilm 21 can then be readily engaged by a set o~` transport rollers 25. The rotatable transport rollers 25 are arranged on a preferably wedge-shaped positioning device 2l~ which can he introduced~ guided by the lower portion L~, into the opening side o~ the cassette so t:hat the pressure plate (22~ 23) is p:l.aced in a defined position in which the X-ray film 21 ex-tends exactly between the two transport rollers 25.
In order to preven-t the X-ray film 21 from aclhering to the intensifier screen 9a, connected to the pressure plate 9~ when the cassette is opened~ the portion of the lid 5 which is situated opposite the edge region 23a of the X-ray film comprises a helical spring 28 which presses against the edge region 23a and which ensures that the X-ray ~ilm 21 indeed disengages from the intensifier screen 9a~ Be¢ause in -the closed condition of the cassette the edge region 23a of the X-ray film is not contacted by the pressure plates (9; 22, 23) or the intensifier screens 9a present thereon, the edge region 23a is (substantially) not exposed during an X-ray exposurc. This offers the advantage that patient data or other data can be recorded on the edge region 23a in a ~ 1~80~4 PHD 81.043 5 1~3.1982 further station. In order to prevent direct exposure o~' the X-ray ~ilm 21 to gamma quanta~ the lid 5 may be covered with a lead plate at the area of the edge region 23a.
In the same position in ~hich the cassette is unloaded by removal of the iY-ray film~ it can b~ loaded again by introduc-tion of another ~Y-ray film. For this purpose it is merely necessary to reverse the drive direction of the transport rollers 25.
The invention relates to an X-rav film cassette, comprising a storage space for an X-rav film which is situated between a bottom and a lid which is pivotabl~
connected thereto 7 the cassette comprising a locking mechanism which defines the mutual positi~n of the bottom and the lid in the open as well as in the closed condition of the cassette, the cassette comprising spring means which retain the X-ra~ film in a fixed position with respect to the bottom and the lid in the closed condition of the cassette and which release the X-ra~ film for transp~t from the cassette in the open condition of the cassette.
For the unloading of a known X-ra~ film cassette of the kind set forth (British Patent Specification 1~5~,75O)~ the cassette is coupled, with i-ts side which is to be opened direoted downwards~ to a film development apparatus which also opens the cassette. To this end, the X-.ra~ film should become loose in the cassette so that it drops between transport rollers of the film developrnent apparatus under the influence of gravity.
It is a drawback of the known X ray film cassette that it cannot be unloaded in the horizontal position. A further drawback consists in that after the opening of the cassette, the X-ray film is liable to adhere to an intensifier screen contacted under pressure by the X-ra~ film in the closed condition of the cassette.
It is an obJect of the invention to provide an X-ray film cassette in which said drawbacks are mitigated.
To this end, an X-ra~v film cassette in accordance with the invention is characterized in that the bottom of the cassette comprises at least one spring which brings the X-ra~ film in the vicinit~ of its transport position~
.
, 1 ~68~74 P~ID 81.043 2 1.3. 1982 the lid comprising at least one spring for disengaging a combina-tion consisting of the X-ray film and a film pressure plate from a further film pressure plate, connected to the lid, and an intensifier screen, the 5 dimensions of the X-ra~ film being larger than the dimensions of the film pressure plate~ an edge region of the X-ray film thus remaining free to be engaged b~
transport means.
The in~ention will be described in detail hereinafter with reference to the drawing~ Therein:
Figure 1 is a longitudinal sectional view of an X-ra~ film cassette in accordance with the invention, and Figure 2 is a perspective view of a part of the X-ra~ film cassette shown in Flgure 1.
The X_rar film cassette 1 whose opening side is placed in a defined position in the figures (at the right) during loading and unloading~ for example, b~
pressing against an abutment 3 ( see Figure 2) by means of a spring 2~ comprises a lower portion 4 and a lid 5. The lower portion 4 comprises a peripheral rectangular U-profile 7a which has an open upper side and which is closed in a light-tight manner in the downwards direction b~ a bottom 7b. The lid 5 comprises a rectangular cover plate 6a which is enclosed b~ a wall 7 which is perpendi-cular to the plate. In the closed condition of the cassette, the wall 7 is situated between the U-profile 6 and the U-profile 7a, so that a so-called lab~rinth is formed and ingress of light is precluded (see figure 2).
l`he lid 5 is pivotably connected to the lower portion 4 b~ means of a hinge 8 which is secured to the lower portion 4 an~ to the lid 5 opposite the opening side of the cassette (i.e. at -the left in Figure 1). A plate-shaped member 9 of an elastic materialq for example, a foam~ plastics is connected to the inner side of the lid 5, the side of said member which faces the lower por-tion 4 of the cassette comprising an intensifier screen 9a 1 16~07~
PHD 81.043 3 1~3.1982 (see Figure 1) whereagainst an X~ray film 21 is pressed in the closed condition of the cassette.
For the opening and closing of the cassette, a locking mechanisrn is provided between the U-profile 6 and the U-profile 7a on each of the two oppositely situa-ted sides (the ~igures show only the front mechanism), said locking mechanism comprising a slide 9c ~hich is coupled to an arm 10 which is pivotably connected $o the lid 5and the slide 9c. 1~hen the slide 9c is displaced, the lid is opened or closed. To this end, two guide pins 11 and l2 (Figure 2) which are rigidly connected to the lower portion 4 engage in two slotted holes 13 and 14 of the slide 9c. Therefore, the slide 9c can be displaced only in the direc-tion perpendicularly to the pivot axis of the lid. ~hen the cassette is closed~ the slide 9c is slid forwards (to the right in Figure 2) by a spring 15, a locking cam 16 on the front end of the slide 9c then engaging behind a pin 17 on the lid 5.
For the opening o~ the cassette, each o~ the two pins 18 (only one of which is shown in Figure 2)~ is slid into an opening 26 in the U-profile 7a, ~or example, by means of a pneurnatic drive cylinder, so that the slide 9c i9 moved ~rom the opening side towards the pivot axis of the lid 5 agalnst the force of the spring 15. During this movement~ ~irst a pin 19 which is mounted on the arm lO
is displaced in a ~urther slotted hole 20 in the slide 9c until the pin l9 contacts the right end wall of the slotted hole 20, the lid 5 being pivoted upwards about the axis of the hinge 8 when the slide 9c is displaced ~urther.
In the closed condition of the cassette~ the X-ray film 21 is situated in -the part of the lo~er portion 4 which is enclosed by the U-profile 6 and rests on a pressure plate (22, 23) which comprises a plate-shaped body 22 of, for example, a ~oamy plastics which is glued on to a plate 23. The plate 23 is pivotable at the left-hand side (in a manner not shown for the sake of clarity) about an axis which is parallel to the pivot axis 1 168~74 PHD 81.043 ~ 1.3.1982 of the lid 5. The film pressure plate consisting o~ the plate 23 and the plate-shaped body 22, preferably compri-sing an intensifier screen (not shown)~ is shorter than the X-ray film 21, so that at the right-hand side (~igure 1) of the X-ray film an edge region 23a remains which does not bear on the pressure plate (22~ 23).
Between the lower portion 4 and the pressure plate consisting of the. parts 22 and 23 there are provided spring means which comprise several blade springs 27~ so . l that in the opened condition of the cassette the pressure plate (22, 23) is pivoted forwards, with the result that the pressure plate and notably the projecting edge region (23a) of the X-ray film 21 disengage from the bottom 7b of the lower portion 4 or the lid 5. l'he freely projec-lS ting edge region 23a of the X-ray ~ilm 21 can then be readily engaged by a set o~` transport rollers 25. The rotatable transport rollers 25 are arranged on a preferably wedge-shaped positioning device 2l~ which can he introduced~ guided by the lower portion L~, into the opening side o~ the cassette so t:hat the pressure plate (22~ 23) is p:l.aced in a defined position in which the X-ray film 21 ex-tends exactly between the two transport rollers 25.
In order to preven-t the X-ray film 21 from aclhering to the intensifier screen 9a, connected to the pressure plate 9~ when the cassette is opened~ the portion of the lid 5 which is situated opposite the edge region 23a of the X-ray film comprises a helical spring 28 which presses against the edge region 23a and which ensures that the X-ray ~ilm 21 indeed disengages from the intensifier screen 9a~ Be¢ause in -the closed condition of the cassette the edge region 23a of the X-ray film is not contacted by the pressure plates (9; 22, 23) or the intensifier screens 9a present thereon, the edge region 23a is (substantially) not exposed during an X-ray exposurc. This offers the advantage that patient data or other data can be recorded on the edge region 23a in a ~ 1~80~4 PHD 81.043 5 1~3.1982 further station. In order to prevent direct exposure o~' the X-ray ~ilm 21 to gamma quanta~ the lid 5 may be covered with a lead plate at the area of the edge region 23a.
In the same position in ~hich the cassette is unloaded by removal of the iY-ray film~ it can b~ loaded again by introduc-tion of another ~Y-ray film. For this purpose it is merely necessary to reverse the drive direction of the transport rollers 25.
Claims
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. An X-ray film cassette, comprising a storage space for an X-ray film which is situated between a bottom and a lid which is pivotably connected thereto, the cas-sette comprising a locking mechanism which defines the mutual position of the bottom and the lid in the open as well as in the closed condition of the cassette, the cas-sette comprising spring means which retain the X-ray film in a fixed position with respect to the bottom and the lid in the closed condition of the cassette and which release the X-ray film for transport from the cassette in the open condition of the cassette, characterized in that the bottom of the cassette comprises at least one spring which brings the X-ray film in the vicinity of its trans-port position, the lid comprising at least one spring for disengaging a combination consisting of the X-ray film and film pressure plate from a further film pressure plate, connected to the lid, and an intensifier screen, the dimensions of the X-ray film being larger than the dimen-sions of the film pressure plate, an edge region of the X-ray film thus remaining free to be engaged by transport means.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP3113793.8 | 1981-04-04 | ||
| DE19813113793 DE3113793A1 (en) | 1981-04-04 | 1981-04-04 | X-RAY FILM CASSETTE |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1168074A true CA1168074A (en) | 1984-05-29 |
Family
ID=6129447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000400100A Expired CA1168074A (en) | 1981-04-04 | 1982-03-31 | X-ray film cassette |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JPS57178234A (en) |
| CA (1) | CA1168074A (en) |
| DE (1) | DE3113793A1 (en) |
| FR (1) | FR2503398A1 (en) |
| GB (1) | GB2096354B (en) |
| IT (1) | IT1150516B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3125397A1 (en) * | 1981-06-27 | 1983-01-13 | Philips Patentverwaltung Gmbh, 2000 Hamburg | X-RAY EXAMINATION DEVICE WITH AT LEAST ONE FILM STOCK MAGAZINE |
| JPS59133500A (en) * | 1983-01-21 | 1984-07-31 | 富士写真フイルム株式会社 | Cassette for storage phosphor sheet |
| EP0236904B1 (en) * | 1986-03-12 | 1991-06-05 | Minnesota Mining And Manufacturing Company | X-ray film feeding magazine usable in film handling automatic apparatus |
| JPH0316149U (en) * | 1989-06-30 | 1991-02-18 | ||
| US5379997A (en) * | 1992-03-31 | 1995-01-10 | Fuji Photo Film Co., Ltd. | Cassette |
| TWI330488B (en) * | 2006-12-08 | 2010-09-11 | Primax Electronics Ltd | Clamp capable of fixing a positive film and a negative film |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB840007A (en) * | 1956-07-27 | 1960-07-06 | Gevaert Photo Prod Nv | X-ray film cassette |
| DE1814305U (en) * | 1959-11-18 | 1960-06-30 | Karl Gollwitzer | LOCKING DEVICE ON AN X-RAY FILM CASSETTE. |
| US3364835A (en) * | 1965-07-12 | 1968-01-23 | Polaroid Corp | Photographic apparatus and method |
| CH520948A (en) * | 1969-03-29 | 1972-03-31 | Minnesota Mining & Mfg | X-ray cassette |
| BE792707A (en) * | 1971-12-29 | 1973-06-14 | Agfa Gevaert Nv | X-RAY FILM CASSETTE |
| GB1454750A (en) * | 1973-08-10 | 1976-11-03 | Ciba Geigy Ag | Film cassette |
| DE2758981A1 (en) * | 1977-12-30 | 1979-07-05 | Agfa Gevaert Ag | DEVICE FOR UNLOADING AND LOADING CASSETTES |
| JPS55100547A (en) * | 1979-01-26 | 1980-07-31 | Fuji Photo Film Co Ltd | X-ray photographic cassette |
-
1981
- 1981-04-04 DE DE19813113793 patent/DE3113793A1/en not_active Withdrawn
-
1982
- 1982-03-31 CA CA000400100A patent/CA1168074A/en not_active Expired
- 1982-03-31 GB GB8209504A patent/GB2096354B/en not_active Expired
- 1982-04-01 IT IT20547/82A patent/IT1150516B/en active
- 1982-04-02 FR FR8205778A patent/FR2503398A1/en active Granted
- 1982-04-05 JP JP57055537A patent/JPS57178234A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| IT8220547A0 (en) | 1982-04-01 |
| DE3113793A1 (en) | 1982-10-28 |
| JPS57178234A (en) | 1982-11-02 |
| IT1150516B (en) | 1986-12-10 |
| FR2503398B1 (en) | 1984-02-10 |
| GB2096354A (en) | 1982-10-13 |
| GB2096354B (en) | 1984-08-30 |
| FR2503398A1 (en) | 1982-10-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |