DE1995344U - CAMERA FOR FILM ASSEMBLED IN CASSETTES. - Google Patents

Description

RA.288 590-18.5-68

AGFA-GEVAiiRT AKTIENGESELLSCHAFT 7.

Leverkusen lo-

Camera door in cassettes made up of film

Me innovation concerns a cinematographic or photographic « Camera for film assembled in cassettes, the is scanned by an electrically conductive guide, with a control circuit for a motor that can be automatically controlled if there is no film.

Bs sxnä already known cameras in which the gripper strikes a contact element on the camera side when there is no ski lift or opens a switch arranged on the camera side and thereby switches off the drive motor for the film transport. Here, however, the switch or a contact mat ... ·. ·:; .- 'I ^. r. jnuitable edges of the gripper arranged · '- ■ -. r _, r _i: aie. _{depending on the} unfamiliar arrangements either not fir ... i. ^ -. oc-.te .. ■ 'cr.fektionierteri film are usable or in - eiiernane aer r ± s.tz- ; for a switch;:. ^ . λ '^ ο ii _U ,. ": ruk; ^ i' · senr Can be difficult.

-d-

MK 591 - 2-

The innovation is based on the task of designing a camera of the type mentioned above so that there is the greatest possible freedom in terms of accommodating the required parts on the camera side. According to the invention, this object is achieved in that a contact plate is provided in the cassette _? which "can be brought into connection with the circuit comprising the sensor when the cassette is inserted into the camera, and that if there is no film in the cassette's image window, the sensor touches the contact plate and thus forms a switch for the circuit." Such a camera is particularly simple if the contact plate can be connected to the circuit via a camera-fixed centering pin that fixes the cassette in its position opposite the camera and / or if the sensor is formed by the Filsitrans = · port gripper. Furthermore, it is advantageous if a carrier plate Establishes the conductive connection between, the gripper and the circuit for the image web, whereby the centering pin can be mounted in an isolated manner in the image web carrier plate.

Other advantages and details of the innovation are explained in more detail with reference to drawings. Show it :

FIG. 1 parts of a camera according to the invention in a vertical section to the film transport direction, Figure 2 shows a further embodiment of the Kaiaera according to Figure *.

MK 591 - 3 -

In Figure 1 9ind a camera-side film web carrier plate made of conductive material with 1, the film web with 2, a film cassette with 3, the film pressure plate with 4 »the film nit 5 and its perforation holes with 5 a and a conductive bit of the film web carrier plate 1 connected gripper with 6 be - ponds. A conductive cassette centering device 7 is insulated in the film web carrier plate 1. In the camera there is a circuit for a motor 8 which drives the gripper 6 and a rotary shutter (not shown). This circuit comprises a battery 9 and a switch 10 which interacts with a camera release (not shown) and is bridged via the film web carrier plate 1. A relay 11 and a signal lamp 12 are located parallel to the motor 8, this branch of the circuit being conductively connected to the centering pin 7. If the circuit between the G tire 6 and the centering pin 7 is bridged, the relay 11 responds and opens a switch 13, so that the motor circuit is opened and the motor 8 is switched off, even if the switch 10 is still closed. At the same time, the signal lamp 12 lights up. Of course, it would also be possible to provide either the relay 11 with the switch 13 or the signal lamp 12.

Now is in the cassette 3 below the pressure plate 4 a contact plate 14 is provided. This comes when inserting the cassette 3 in the Kazaera in contact with the centering

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MK 591 - 4 -

pin 7. If there is film in the area of the filmbato 5 », the gripper 6 falls into each perforation hole 5a and transports the film *. It cannot, however, touch the contact plate 14. Only when the end of the film has the film web 2 • happens, the Sreifer 6 is no longer retained by fen film and falls in the direction of arrow 15 through and contacts dis Kontäktplafet-e H = Now will oils conductive .Filmbahnträgerplatte 1, the gripper 6, the Kon'feaktplatte 14 and the centering pin 7 of the circuit of the heater 11 are closed, so that the motor 8 is automatically switched off in the absence of the film 5 in the film path 2. The device according to the innovation thus serves as a film end switch and / or film end indicator and has the advantage that, in addition to the gripper that is already present, only one contact plate 14 has to be provided in the cassette in the gripper area. The remaining parts such as battery 9, motor 8, relay 11 can be accommodated in any free space in the camera that is separate from this.

According to the design according to. Figure 2 can take the place of Relay 11 and switch 13, a transistor 16 kick in, the 55ctoretromkreis when touching G-mature 6 and contact plate 14 de-energizes.

Of course, the fire is not on what is shown Embodiment · limited. So the contact with the contact plate 14 does not have to be made by the gripper 6, but could also be caused by a sensor scanning the film.

1995 ^ 44

Claims (6)

RA.28Ö 590 * 18.5. MK 591-5 - Protection claims 1. Cinematographic or photographic camera for in cassettes made-up film, which is scanned by an electrically conductive sensor, with a control circuit for a motor which can be automatically controlled when there is no film, characterized in that in the cassette (3) a contact plate (14) is provided, which when the cassette (3) is inserted into the camera (1) with the sensor (6) comprehensive circuit can be brought into connection, and that in the image window of the cassette (3. \ missing film (5) the The sensor (6) touches the contact plate (14) and thus forms a container for the electrical circuit. 2. Camera according to claim 1, characterized in that the contact plate (14) via a camera-fixed, the cassette (3) centering pin (7) which fixes it in position with respect to the camera (1) Eit can be connected to the circuit. 3. Camera according to one of the preceding claims, characterized characterized in that the pressure spring (15) for the FiIn? .- pressure plate (4) is designed as a contact plate. 4. Camera according to one of the preceding claims, characterized in that the sensor through the film transport gripper (6) formed v: ird. -6- MK 591 - 6 - 5. Camera according to one of the preceding claims, characterized characterized in that a carrier plate (1) for the image web (2) is the conductive connection between the gripper (6) and the circuit establishes. 6. Camera according to one of the preceding claims, characterized in that the centering pin (7) isolated in the image carrier plate (1) is mounted. For this purpose a sheet of drawings