JPS5826008B2 - photo processing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to photography, and more particularly to an improved film advancing and fluid stretching photographic processing apparatus for use in self-developing photographic machines.

There are many conventional fluid extension devices used in self-developing photographic machines.

There are various photographic devices in which each film unit in a mechanism including a series of photographic film units is passed between a pair of pressure members after exposure to release processing components contained in each film unit and disperse the components within the film unit. The format has been proposed.

Passing a series of photographic film units between the pressure members can be accomplished by hand pulling or by drawing out each film unit using guide means or similar means attached to the camera.

When feeding each film unit, a pair of pressure members receives a portion of the film unit between them, and the portion of the film unit can be grasped and manually pulled out of the camera from between the pair of pressure members. It is now possible to do so.

Although such a device is basically sufficient, it requires a plurality of guide means to be placed outside the camera;
It becomes necessary to provide means for manual operation, which inevitably complicates the structure of the camera.

The inherent disadvantage of this type of fluidic extension device is that the photographic film unit must be manually pulled out from between the pressure members at a constant speed in a straight line so that the processing components are evenly distributed over the photosensitive layer of the film. It is a certain thing.

If this is not done, the processing components will not be uniformly dispersed, and the exposed portions of the photosensitive layer that are not in contact with the processing components will not be developed.

In another type of fluid extension device, U.S. Pat.
As seen in Nos. 7324 and 2873658,
It includes means that engages near the rear end of the film unit and feeds the film between a pair of non-rotating pressure members.

The main disadvantage of this type of device disclosed in the two patents is that in the case of U.S. Pat. No. 2,477,324, the film unit is substantially The film unit of U.S. Pat. No. 2,873,658 must have high rigidity or be thick, and in the case of the film unit of U.S. Pat. It must be substantially stiffer or thicker so that it can be used.

Increasing the thickness and/or stiffness of the film increases material and manufacturing costs, and increasing the thickness increases the bulk of the cassette that houses each film unit and the camera housing used to house the cassette.

A new fluid extension device is introduced in which the film unit is transported and processed by a motorized mechanism after exposure.

In this mechanism, when a signal indicating that exposure of the film unit inside the camera is completed is received, the film unit is automatically fed between a pair of pressure members, and this pressure member receives the film unit. Moving it out of the camera at a constant speed while spreading the processing components between the elements of the film unit is as shown in US Pat. No. 3,776,118.

The electric motor provided in this device is connected to one of the pressure members through a gear mechanism, and transmits rotational movement in a predetermined direction to it, feeding the film unit between the pressure members and releasing the processing components during the processing process. Spread throughout the film unit.

Although this device eliminates some of the undesirable drawbacks of the fluid extension devices previously discussed, it is not a convenient method for manually rotating the pressure member to remove residual treatment components.

An even more important case is when the processing process is interrupted due to a failure of the electric mechanism, with the film unit being partially processed and still stuck between the pressure members, and the film unit is manually pulled out from between the pressure members. This is not a convenient method.

Manually rotating the pressure member places an extra load on each member of the device, including the electric motor, because the mechanical advantages built into the design of the device must be offset.
Transferring energy in the opposite direction through this device would be a mechanical drawback and could cause considerable damage to the device.

As can be seen from the above description, the drive mechanism for the fluid extension device has at least one rotatable pressure member, and energy is transmitted to the pressure member to rotate it in a predetermined direction. First, when the pressure member is rotated by hand,
It is necessary that substantially no energy be transferred in the opposite direction through the drive mechanism.

The purpose of this invention is to provide a photographic apparatus, in particular U.S. Pat.
The object of the present invention is to provide a film feeding and fluid stretching device for use with films of the type described in No. 770.

The film mechanism described in said patent includes a unitary film cassette having spaced apart front and rear walls, a pair of side walls and a front end. and a rear end wall which house a plurality of thin resilient film units of the type detailed in U.S. Pat. No. 3,415,644.

The front wall of the film cassette has a generally square exposure opening having an area approximately equal to the area of the film unit to be exposed and extending rearwardly along one side of the front wall at least halfway up the rear end wall of the cassette. and at least one elongated hole.

One elongated ejection hole is provided in the front end wall of the cassette,
The film units move one sheet at a time through this elongated hole.

That is, the width of this elongated hole is
As shown in detail in No. 70, the thickness is slightly larger than the thickness of one film unit and smaller than the thickness of two film units.

A leaf spring is provided between the stacked film units and the battery adjacent the rear wall of the cassette.

This plate is for pressing the foremost film unit against the front wall so that its photosensitive layer is in an exposed position and the leading or other end of the film unit is aligned with the delivery slot.

The film mechanism is located inside the camera so that the foremost film unit is exposed.

A film transport device is provided inside the camera, and the film transport device includes a film engaging member that extends into slots in the front end wall and the rear end wall of the cassette, and extends into the slots of the front end wall and the rear end wall of the cassette. engages with or near the rear end of the film unit before passing through the ejection slot of the cassette and moving between the pair of pressure members.

Incidentally, the pressure member is provided adjacent to the front end of the foremost film unit.

The pressure member receives the film unit when it passes through the elongated delivery hole and comes out to the exposure position, and simultaneously delivers the film unit to the outside of the camera and spreads the processing component between predetermined layers of the film unit. It has become.

The camera has an electric motor that is driven by a battery provided inside the cassette, and when in operation, power is transmitted through a power mechanism.

One end of the power mechanism is coupled to an electric motor, and the other end is adapted to be coupled to a pinion which is axially coupled to one of the pressure members to move the exposed film unit inside the cassette. It is continuously moved from the exposure position to a position between the pressure member and the outside of the camera.

The power mechanism consists of an energy transmission mechanism and a ratchet mechanism.
The ratchet mechanism limits rotational movement to only one direction, so that energy is transferred from the electric motor to the pinion, causing the pressure member to rotate in the predetermined direction, but when the electric motor and power mechanism complete their driving motion, the pinion is rotated. If an attempt is made to drive the device by manually rotating the pressurizing member in a predetermined direction, transmission of power in the direction toward the electric motor via the power mechanism, that is, in the opposite direction, will be prevented.

Rotation of the pressure member continues to move the film unit toward the outside of the camera, simultaneously rupturing a pouch containing the processing ingredients located near the tip of the film unit, spreading the processing ingredients between the layers of the film unit, and forming a film. It is well known to form a visible image within a unit.

After the processing components have spread between the layers, the film unit leaves the pressure member and moves to the outside of the camera, where the user can grasp the film unit and after a predetermined period of time obtain a positive image of the photographed scene. .

In the preferred embodiment, in the unlikely event that the electric motor or power transmission mechanism fails or the battery is low on energy and cannot drive the electric motor, the The pressure member can be operated manually.

It is desirable that the initial spacing of the pressure members is determined in advance by the film engagement member such that the leading end of the foremost film unit occupies a position between the pressure members.

The spacing between the pressure members defined by this prespacing setting is substantially thinner than the thickness of the film unit, increases when the film unit is fed between them, and returns to the original prespacing position after the film unit has passed. Adjust the pressure member to .

Manual rotation of the pressure member can be done by rotating the pressure member with a pinion when the electric motor and energy transmission mechanism fail and are not in the driving state, or else by grasping the tip of the film unit and rotating the film unit. This is done by pulling it out from between the pressure members.

By doing so, the pressure member continues to rotate in the predetermined direction, advancing the film unit toward the outside of the camera while simultaneously spreading the processing components between the predetermined layers of the film unit.

The ratchet mechanism included in the power mechanism consists of a ratchet wheel and a pawl, the ratchet wheel has saw teeth arranged around its rotation axis, and the pawl engages with the saw teeth, and the power mechanism and electric motor are driven. In this state, the pawl is caught between the sawtooth teeth on one side of the ratchet wheel and rotates with the ratchet wheel.

When the power mechanism and the electric motor are not in a driving state, the pressure member having a pinion in the axial direction is manually rotated in the predetermined direction, the film unit is fed between the pressure members, and the processing component is simultaneously spread, and the pinion is rotated. Exercise is
It is transmitted in the opposite direction, towards the ratchet mechanism, so that the pawl rotates and away from the sawtooth of the ratchet wheel.

During this time, the ratchet wheel remains stationary, so no mechanical energy is transmitted from the pressure member to the energy transmission mechanism connected to the electric motor.

Therefore, the electric motor and the energy transmission mechanism are not subjected to excessive forces that may damage them.

The power mechanism is designed to drive the pinion in one direction, each member of which has a specific relationship with each adjacent member.

Therefore, when manufacturing it, due consideration must be given to factors known to those skilled in the art as mechanical advantages of this design.

The factor is expressed as the ratio of the force exerted by each member to the force acting on that member.

Any attempt to reverse the operating state from the pinion to the electric motor through the power mechanism when the power mechanism is not operating is a mechanically disadvantageous operation and requires a certain amount of energy in each member of such a transmission mechanism. This will add a load.

This load may exceed the permissible load determined from the durability of each member and may cause considerable damage to all or part of the member.

Due to the provision of a ratchet mechanism in the film advance device, the transmission of energy from the pinion to the energy transfer mechanism and the electric motor is interrupted, thus allowing the film unit to be pressurized without significant damage to the entire device or the electric motor. It can be pulled out from between the members to the outside of the camera, the pressure member can be rotated in a predetermined direction, and foreign objects can be removed from the pressure member.

An object of the present invention is to provide a film feeding liquid stretching device, an electric motor, a power mechanism connected to the electric motor, and a ratchet wheel mechanism included in the power mechanism, and in a driving state, after exposure by the power mechanism, a film unit is is fed from the tip into a pair of juxtaposed pressure mechanisms where the film unit is processed and moved from the exposure position to a second location outside the camera, and a ratchet mechanism is coupled to one of the pressure members. It is configured to transmit energy from the power transmission mechanism to the pinion and rotate the pressure member in a predetermined direction, and when the pressure member is rotated in a predetermined direction, energy is transmitted from the pressure member to the power mechanism. It is an object of the present invention to provide a photographic device characterized by substantially blocking energy transmission to a mechanism.

Another object of the present invention is to provide a film feeding fluid extension device in which manually rotating one of a pair of pressure members automatically separates the pressure member from the energy transmission device. The transmission device is used to transfer energy from the motor to the pressure member when the motor is in the driving state. The pressure member can be rotated in a predetermined direction to remove foreign objects or to deal with a failure of the power mechanism and/or electric motor.

In addition, even if the film unit is partially processed and gets caught between the pressure members, the energy transmission mechanism and/or Or the process can be completed without damaging the electric motor.

The photographic apparatus according to the present invention is particularly useful in processing photographic film systems containing all the materials necessary to complete positives.

The film mechanism has at least one photosensitive imaging layer that is exposed to form an image and is adapted to overlap the photosensitive layer to disperse and facilitate contact with the exposed photosensitive layer, at least during the processing step, and a viscous processing component. and a rupturable container or pouch containing a viscous processing component adapted to form a positive image when dispersed and in contact with the exposed photosensitive layer.

Film mechanisms of this type can take many forms.

For example, one or more positives can be obtained from a photosensitive plate and a separate plate, or a pair of plates, each with their surfaces aligned, can be exposed and processed to form a single positive. It is also possible to use a film unit adapted to produce positive images.

The viscous treatment component is held in a rupturable pouch connected to one or both plates and is adapted to pass with the superimposed plates between a pair of juxtaposed pressure members spaced at a predetermined distance. It is composed of

Alternatively, the treatment components may be fed between the elements from a source separate from the superimposed plates and then spread out in a thin layer as the elements pass between the pressure members.

Each film mechanism or film unit is processed by applying pressure to the rupturable pouch and expelling its contents as it passes between the pressure members, rupturable pouch first.

Accordingly, the film unit is configured such that it can be exposed immediately after the viscous processing components have been dispersed within it and exit the photographic device.

Therefore, the spreading of the processing components must be complete and exposure of the photosensitive element immediately after spreading must be prevented.

A more detailed explanation will be given below using FIGS. 1 and 2.

The apparatus of the present invention includes a film feeding and fluid stretching apparatus 10 that is used to pass a film unit 12 between an upper pressure member 14 and a lower pressure member 16, and with the tip 18 of
The lower pressure member 1 is fed between the pressure members 14 and 16.
6 in a predetermined direction, the viscous treatment component is spread.

By driving the lower pressure member 16 in a predetermined direction,
The upper pressure member 14 is frictionally engaged with the film unit 12 and rotates in the opposite direction S1.

The lower pressure member 16 is supplied with electrical energy from a suitable power source such as one or more batteries (not shown);
Gives rotational force.

A drive pinion 22 coupled to one end of a shaft 24 provided on the electric motor 20 is connected to an energy transmission mechanism and a ratchet mechanism 2.
Acts as the first member of a power mechanism consisting of 6.

The energy transmission mechanism includes a drive pinion 22 and a plurality of gears 2.
8.30 and 32, these gears engage each other and positively transmit mechanical energy from the electric motor 20 to the ratchet pinion 34 when the device 10 is in the driving state, so that the pawl The wheel mechanism 26 rotates in a predetermined direction.

The ratchet mechanism 26 engaged with and was driven by the gear 32 of the energy transmission mechanism and had a ratchet pinion 34 axially coupled to the shaft 36 and further had a plurality of saw teeth 40. It has a ratchet wheel 38.

The sawtooth 40 is located within the recess 54 of the ratchet wheel 38.
It faces the ratchet mechanism pinion 34.

Sawtooth 40 engages substantially resilient first and second arms 42 and 44 of pawl 46, thereby causing pawl 46 to rotate with ratchet wheel 38 when device 10 is in the driven state. , is retained within the sawtooth 40.

A ratchet pinion 48 is axially coupled to the pawl 46 and drives a pressure member pinion 50 .

A pinion 50 is axially coupled to the lower pressure member 16 and rotates the upper pressure member 14 at a constant speed in the opposite direction when the film unit is present between the pressure members.

The film transport fluid extension device 10 is configured to apply a rotational force in a predetermined direction and a uniform output angular velocity to the pressure member pinion 50, thereby producing a unidirectional mechanical force.

The electric motor 20 can provide sufficient force to the energy transfer mechanism, ratchet mechanism 26 and pressure member pinion 50 with minimal input energy available from the power source.

As a result, film unit 12 has the advantage of being fed at a rate that completely disperses the processing components into its exposed photosensitive layers.

Therefore, the electric motor 20 must be provided with sufficient force from the battery to force the film unit 12 to pass between the pressure members 14, 16 at a substantially constant predetermined speed.

The lower pressure member 16 constitutes a driving part for the pressure members 14 and 16, and a pressure member pinion 50 is coupled in the axial direction to the lower pressure member 16, and the pinion 50 is used to transmit energy within the power mechanism. The electric motor 2 through the mechanism and ratchet wheel 26
0.

The pressure members 14 and 16 are configured to gradually pass the film unit 12 between the pressure members 14 and 16, and the pressure applied by the pressure members 14 and 16 to the film unit first removes the viscous treatment component. A containing rupturable pouch (not shown) is ruptured and the processing components flowing from the bag are gradually dispersed into the exposed photosensitive layer of the film unit 12 while the film unit is then advanced between the two members.

After exposure, the foremost film unit among a plurality of film units housed in a film cassette in a camera body (not shown) is fed between pressure members 14 and 16.

Energy is sent to the power mechanism by the electric motor 20 in the driven state and transmitted to the pressure member pinion 50 to drive the lower pressure member 16 in a predetermined direction (schematically shown in FIG. 3).

The electric motor 20 causes the shaft 24 and the drive pinion 22 axially connected thereto to transmit energy from the gear 28 30 , 32 and the ratchet pinion 34 to the ratchet mechanism 26 and to the pressure member pinion 50 As a result, the lower pressure member 16 rotates in a predetermined direction.

As will be apparent to those skilled in the art, the energy transfer mechanism
0 to the pressure member pinion 50, it can be composed of one or more gears or rotating surfaces necessary for transmitting energy from the pressurizing member pinion 50,
The ratchet pinion 34 can also be removed from the power mechanism and the gear 32 can be engaged directly with the teeth 52 on the outer periphery of the ratchet 38.

By arranging the sawtooth 40 as shown in FIGS. 1 and 2 about the axis of rotation of the ratchet wheel, the sawtooth 40 from the center of the axis of rotation engages the first and second arms 42 and 44. The moment arm extending to the point of mating contact provides the line of action of the force that rotates pawl 46 and ratchet pinion 48.

This saw-tooth arrangement not only creates a suitable moment arm, but also increases the diameter of the ratchet wheel to allow for such an arrangement, as well as the gear 32 for rotation of the pressure member pinion 50. Direct engagement between the ratchet wheel 38 and the teeth 52 caused by undesirable speed ratios is prevented.

The first thing to consider when configuring the device 10 is to obtain sufficient rotational speed and rotational force to pass the film unit 12 between the pressure members 14 and 16, and to reduce the processing capacity to the exposure sensitivity of the film unit 12. It is to extend the entire layer.

The camera includes a mechanism that automatically engages the rear end 56 of the exposed film unit 12 and feeds it from inside the cassette between the rotating pressure members 14 and 16.
(not shown), which allows the film unit 12 to pass between the pressure members 14, 16 and out of the camera so that it can be grasped by the user.

It is imperative that the power transmission mechanism operate continuously during the processing process in which the exposed film unit 12 is passed between the pressure members 1416 and the viscous processing components are dispersed throughout the exposed photosensitive layer of the film unit 12. It is.

During this process, for example, if the electric motor 20 breaks down,
If the operation of the film feeding fluid stretching device 10 is stopped due to the drive state being stopped or the power source such as a battery being unable to provide sufficient power to the electric motor 20 to complete the processing process,
The film unit 12 is in a partially processed state (the fourth
(as shown in the figure), the pressurizing member 14, 16 may stop.

If the film unit 12 cannot be pulled out from between the pressure members after such a stop, the exposed photographs on the film will be wasted.

In order to complete the processing process, the tip 18 of the film unit 12 must be grasped by hand and the film unit 12 must be immediately pulled out from between the pressure members 14 and 16, but this operation reverses the driving state. Since the direction changes from the pressure member pinion 50 receiving energy to the electric motor 20 supplying energy, the pressure member pinion 50 is forced to operate mechanically disadvantageously.

In other cases, the device 10 is in the opposite direction, that is, the pressure member pinion 3
The obstacles when operating from 8 to the electric motor 20 are as follows:
initial losses due to gear tooth formation and placement errors;
There is potential inertia involved in the energy transfer mechanism, as well as frictional losses and mechanical resistance when the motor 20 is not operating at rest.

By changing the driving state in the opposite direction, that is, from the pressure member pinion 50 to the electric motor 20, the actual dynamic load on each component of the film transport fluid stretching device 10 required to substantially transport the film unit 12 is reduced. Even if generous safety factors are taken into account in the design of each component, the design load of the equipment can be exceeded and the components can sustain significant damage and require extensive repairs. , the film transport fluid extension device 10 may become completely inoperable.

Therefore, in the present invention, the electric motor 20 is operated to transmit energy to the pressure member pinion 50 via the power mechanism having the energy transmission device and the ratchet mechanism 26, and the pressure member pinion 50 presses the lower part. It is configured to be coupled to the member 16 in the axial direction and to rotate the lower pressure member 16 in a predetermined direction.

As schematically illustrated in FIGS. 3 and 4, the pressure member 16 is rotated by hand in a predetermined direction, and the film unit 1 is
When the second processing step is continued, energy transmission from the pressure member 16 to the energy transmission mechanism is prevented.

In FIG. 3, the ratchet mechanism 26 transmits the energy received from the electric motor 20 through the energy transmission mechanism in the operating state to the pressure member pinion 50, causing the pinion 50 to rotate, so that the lower pressure member 16 Rotate in a predetermined direction.

When the device 10 is in the driving state, the ratchet pinion 34 is engaged with the energy transmission member, i.e. the gear 32.
is driven to rotate a ratchet wheel 38 which is axially coupled to the pinion 34.

substantially resilient first and second arms 42 fully engaged with sawtooth teeth 40 formed within ratchet wheel 38;
and 44 are driven in the same direction (clockwise in FIG. 3) by ratchet wheel 38 as a result of such engagement.

A ratchet pinion 48 axially coupled to the pawl 46 rotates together with the pawl 46 and rotates the pressure member pinion 50, thereby causing the lower pressure member 16 to rotate in a predetermined direction;
Film unit 12 moves between pressure members 14 and 16.

Sawtooth 40 has a ramped surface 58 and a drive surface 60, with ramped surface 58 supporting ends 66 and 68 of substantially resilient first and second arms 42 and 44 of pawl 46. In addition, the drive surface 60 is connected to the first and second arm portions 42.
and the first end 62 and the second end 64 of 44, thereby applying a rotational force to the pawl 46 which acts as a driven part of the ratchet mechanism 26, so that the ratchet mechanism 26 operates as a main driving part. Rotation of the ratchet wheel 38 causes rotation in only one direction.

Ratchet mechanism 26 thus acts as an energy transfer mechanism by actively engaging drive portion 60 with pawl 46 and rotating pawl 46 when device 10 is in the driven state.

The lower pressure member 16 is used to manually pull out the film unit 12 and remove remaining processing components from the pressure member 16.
When rotating the pressure member pinion 50 by hand, first rotate the pressure member pinion 50 by hand in a predetermined direction, and the rotational force is applied to the ratchet pinion 4.
8 and pawl 46.

The ratchet wheel 38 remains stationary, and the substantially resilient first and second arms 42 and 44 move away from the drive surface 60 past the sawtooth 40 to engage the drive portion or pawl. Contact is made with the inclined surface 58 of the sawtooth 40 of the wheel 38.

Initial ends 62 of first and second arms 42 and 44
The corner end 70 of the second end 64 and the corner end 72 of the second end 64 rotate in a constant direction determined by the operation of the device 10 when in the driven state, and at the same time rotate the inclined surface 58 of each sawtooth 40. Sliding.

At the same time, the substantially resilient first and second arms 4
The ends 62 and 64 of 2 and 44 are serrated 40
The ratchet wheel 3 moves in the direction away from the drive surface 60 of the
8 remains stationary.

As a result of the ratchet wheel 38 remaining stationary, no energy is transferred to the ratchet pinion 34 and therefore when the film unit 12 is manually pulled out from between the pressure members 14 and 16, energy is transferred to the electric motor through the energy transfer mechanism. The processing step is completed.

A modified example of the invention is shown in FIGS. 5, 6 and 7.

In the figure, the ratchet pinion 48 is connected to the upper pressure member 14.
The pressure member pinion 50 is axially coupled to the pressurizing member pinion 50 .

In FIG. 5, the ratchet mechanism 74 and gear 32 of the energy transmission mechanism are in a driven state, and the rotational motion transmitted from the ratchet pinion 48 causes the film unit 12 to
moves between the upper pressure member 14 and the lower pressure member 16.

In this case, the electric motor 20 (first
(as shown in the figure) to the pressure member pinion 50, and as a result, the upper pressure member 14 rotates in a predetermined direction.

The ratchet pinion 48 and the pressure member pinion 50 are coupled to the upper pressure member 14 so that the upper pressure member 14 can move the film unit 12 between the upper pressure member 14 and the lower pressure member 16.
In order to pass the ratchet wheel 76 in a predetermined direction, the ratchet wheel 76, which is driven by the rotation of the ratchet pinion 34 which is axially connected to the ratchet wheel 76, is moved in the sixth direction, which is the opposite direction to the direction shown in FIG.
It must be rotated in the direction shown in the diagram.

Furthermore, by changing the structure of the sawtooth T8 of the ratchet wheel 76,
First and second arms 88 of the substantially resilient ratchet wheel 92 change the direction of inclination of the ramped surface 80 of the sawtooth 78 and oppose the drive surface 82 coupled to one end of the ramped surface 80.
and 90 rotates ratchet wheel 92 and ratchet pinion 48, so that in the drive condition of the device, FIGS. The upper pressure member 14 of the film transport fluid extension device 100 shown in FIGS. and 7 must rotate in the opposite predetermined direction.

The operation of the previously described embodiments of the invention and the previously described variants is similar, and there is no difference between the other embodiments when the pressure member pinion 50 is axially coupled to the upper or lower pressure member. .

The above-mentioned modification example merely shows an example in which the present invention can be applied to any pressure member, and by transmitting energy from the electric motor to the pressure member pinion 50, any pressure member can be applied. It rotates in any predetermined direction.

When the film unit 12 is manually pulled out or the upper pressure member 14 having a pressure member pinion axially coupled to the upper pressure member 14 is manually rotated, the pressure member pinion 50 is rotated in the opposite direction to the predetermined direction. The rotational force is transmitted in the opposite direction to the pawl 92, as shown in FIG.

The ratchet wheel T6 remains stationary, but the substantially resilient first and second arms 88 and 90 move past the sawtooth 78 in a direction away from the drive surface 92.

This is substantially the same operation as described above for manual rotation of the lower pressure member 16 when the lower pressure member 16 is coupled to the device 10 of the present invention.

Although gears have been shown as the means for transmitting energy from the electric motor to one of the rollers, it will be clear that other suitable rotating surfaces could be used for the same purpose, such as, for example, friction wheels.

The electric motor 20 can also be operated by a battery, manually or by a spring in order to drive the power transmission mechanism in the driving state.

It will be apparent to those skilled in the art that ratchet wheels 3B and 76 can be formed integrally with ratchet pinion 34 and pawls 46 and 92 can be integrally formed with ratchet pinion 48.

Furthermore, the ratchet mechanisms 26 and 74 can be configured so that the pressure member axially coupled to the pressure member pinion 50 is oriented in one predetermined direction by providing the ratchet mechanisms 26 and 74 at different locations within the power mechanism. When rotated, energy continues to be transmitted from the motor to the pressure member pinion 50, and the transmission of energy from the pressure member pinion 50 to the motor 20 is interrupted.

[Brief explanation of the drawing]

FIG. 1 is an enlarged perspective view of a film feeding fluid extension device showing a partial cross section of a power mechanism operatively coupled to one of a pair of pressure members in a driving state, and FIG. 2 is a diagram showing the relationship between each member of the present invention. 3rd exploded perspective view of the device of the present invention showing the position in perspective;
The figure is an enlarged side view schematically showing the ratchet mechanism of the power mechanism operatively coupled in the electrically driven state, and Figure 4 shows the power mechanism driven by manually rotating one of a pair of pressure members. FIG. 5 is a side view schematically showing the ratchet mechanism, in an electrically driven state, one member of the energy transmission mechanism of the power mechanism and the second member of a pair of pressurizing members operatively coupled to each other are operated. FIG. 6 is an enlarged side view schematically illustrating a ratchet mechanism within a power mechanism operatively coupled to a second member in an electrically driven state; FIG. This figure and FIG. 7 are side views schematically showing the ratchet mechanism shown in FIG. 6. Explanation of symbols: 10...Film feeding fluid extension device, 12...Film unit, 14...
... Upper pressure member, 16 ... Lower pressure member, 2
0... Electric motor, 26... Pawl wheel mechanism,
40... Sawtooth, 50... Pressure member pinion, 74... Rattle mechanism, 78...
...Sawtooth, 92...Claw, 100...
...Film feeding fluid stretching device.

Claims (1)

[Scope of Claims] 1. A photographic processing apparatus configured to process and feed out an exposed film unit from inside the camera by continuous operation of a drive device by an electric motor, the apparatus comprising: a pair of juxtaposed pressure members; the pressure member including at least one roller rotatably disposed between the pressure members for receiving and delivering the exposed film unit; and at least one roller coupled to the roller. a drive device including a gear; an energy supply device that supplies energy to rotate the drive device; and a transmission device that transmits the energy from the energy supply device to the drive device, the drive device comprising: a shaft; a transmission device that is interposed between the device and the transmission device and includes a drive member that is rotated about the shaft and a driven member that is rotatably provided around the shaft; and the ratchet wheel load cooperates with the transmission device to transmit the energy from the energy supply device to the drive device when the energy supply device is in operation, thereby transmitting the energy from the energy supply device to the drive device. causing the roller to rotate in a first predetermined direction, while if the energy supply device is inoperable and the roller is manually rotated in the predetermined direction, energy is transferred from the drive device to the energy transfer. A photographic processing apparatus, wherein transmission of energy to the apparatus in a second direction opposite to the first direction is substantially prevented.