JPH04299320A - Instant photographing device - Google Patents

Abstract

PURPOSE:To prevent image quality (color reproduction) from being deteriorated in the case of printing a positive sheet even when printing actions are not started for a while after the positive sheet is inserted into a device in an assembly state. CONSTITUTION:When a fixed time elapses without performing the printing actions after a positive sheet assembly 10 is inserted into a machine from above a guiding plate 61, the assembly 10 is ejected to an ejection tray 47 outside of the machine. The fixed time for ejecting the assembly 10 is set in accordance with a detected temperature by providing a sensor which detects the temperature in the machine in the device.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a peel-apart type instant photographic apparatus in which a negative film and a positive sheet containing a developer are separated and set at different positions in the apparatus.

0002

2. Description of the Related Art In a peel-apart type instant photographic device, development is carried out in a bonded body made by combining a negative film and a positive sheet. In such an instant photographic device (camera), when the negative film and positive sheet (supply) used are small in size, they are combined in advance and used as a pack film.

However, in the case of a large-sized instant photographic device, the negative film and positive sheet become large in size, making them difficult to handle. Therefore, in the case of an instant photographic apparatus that uses a relatively large positive sheet, a method is adopted in which the negative film and the positive sheet are separated and set into the apparatus independently.

[0004] The positive sheet used in this way is
In normal cases, it is used in the form of a positive sheet assembly with accessories such as a pod containing developer and a trap mask to retain excess developer after spreading. Further, roll type negative film is generally used, and the negative film is loaded into a cartridge and set in an instant photographic device.

[0005]

[Problems to be Solved by the Invention] In this peel-apart type instant photography device in which the negative film and positive sheet assembly are used separately and set at different positions in the device, the positive sheet assembly is inserted into the device. If the printer is left in a heated state without starting the printing operation, the temperature inside the device will be high due to heat generated by the power supply, etc., and the developer and positive sheet will be warmed up, and printing will continue in this warmed state. There was a problem in that the image quality (color reproduction) deteriorated when the process started.

The present invention has been made in view of the above-mentioned problems, and even if a positive sheet is inserted in an assembled state into an apparatus and the printing operation is not started for a while, the image quality ( The purpose is to prevent deterioration of color reproduction.

[0007]

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a peel-apart type instant photographic apparatus as described above, in which a certain period of time elapses without any printing operation after a positive sheet is inserted into the machine. When this occurs, a means is provided to discharge the positive sheet outside the machine.

Further, the instant photographic apparatus is provided with a temperature detection means for detecting the internal temperature of the apparatus, and also provided with means for setting the above-mentioned predetermined time according to the temperature detected by the temperature detection means.

[0009]

[Function] According to the instant photographic device configured as described above, if a positive sheet is inserted into the device and the printing operation is not started for a while, it will be ejected outside the device after a certain period of time has elapsed. Positive sheets cannot be heated to a temperature that degrades image quality when printed.

[0010] Furthermore, if a temperature detection means for detecting the temperature inside the machine is provided in the apparatus, and means for setting the above-mentioned fixed time according to the temperature detected by the temperature detection means is provided, the time for ejecting the positive sheet is determined by the temperature inside the machine. It can be changed depending on the
Positive sheets are ejected out of the machine in a more optimal time.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is an overall configuration diagram showing an instant photographic device according to an embodiment of the present invention, FIG. 2 is a perspective view showing a positive sheet assembly used in the instant photographic device, and FIG. 3 is a side view of the positive sheet assembly. be.

As shown in FIGS. 2 and 3, this instant photographic device includes a pod 13 in which a developer De is sealed in a positive sheet (image receiving sheet) 11, a trap mask 16 for retaining the surplus developer after spreading, and the like. A positive sheet assembly 10 with attached parts is used.

The positive sheet assembly 10 includes a black leader 12 attached to the tip of the image receiving surface side (upper side) of the positive sheet 11, and a developer De stored inside the leader 12 as shown in FIG. The pod 13 pasted on top of the pod 13, and the tip masks 14 each disposed to improve the image at each end of the image area (area axb in FIG. 2) of the positive sheet 11. side mask 15,15
and each mask such as the track mask 16, and the rail members 17 and 1 affixed on both side masks 15, respectively.
7.

The developer De is sealed in the pod 13 in an amount larger than that required for image formation so that the developer De is sufficiently distributed to the rear end of the image area on the right side in FIG. After the developer has uniformly spread to the rear end of the image area, the excess developer is removed from the trap mask 16 and a negative film 20 (D' in FIG. 4), which will be described later.
).

[0015] This prevents excess developer from scattering inside the apparatus and adhering to and contaminating the developing roller, conveyance path, etc. As shown in FIG. 5, the reader 12 has three mark sections M1 with positive sheet type identification codes.
, M2, and M3.

The mark portions M1, M2, and M3 are formed by punching holes, for example, and forming a positive sheet type identification code by combining the presence or absence of the holes, or by printing it with a reflectance different from that of the reader 12. It can be formed with In this embodiment, the mark portion M1
, M2, and M3 are formed by punching.

In this embodiment, since the pod 13 is pasted on the reader 12, the mark portions M1 and M2
, M3 with a hole, this hole part is the pod 13
will be covered by. Therefore, the reader 12
The detection accuracy is improved by making the color black and contrasting it with the color of the pod 13 (usually white).

In this embodiment, the negative film 20 is shown in FIG.
Use a film material wound into a roll as shown in the figure. The negative film 20 is made of a long (for example, long enough to photograph 36 images) photosensitive strip material, and has a latent image forming surface (
The film is wound into a roll with the photosensitive surface facing inside, and is housed in a negative film cartridge 21 as shown in FIG.

The negative film cartridge 21 is molded of resin into a cylindrical shape containing a roll of negative film 20, and is shown in the figure in order to facilitate molding and loading of the negative film 20. It is configured so that it can be divided into two sections along the axis.

[0020]Then, the negative film cartridge 2
As shown in FIG. 7, the upper container 21a and lower container 21b of 1 are provided with fitting portions 22 and 23 for coupling, respectively.
and a negative guiding section 24 for feeding out the negative film 20.
and a negative feeding section 25 is formed.

The fitting parts 22 and 23 are shaped so that the fitting part 22 covers the fitting part 23, and prevents the negative film 20 from being exposed to light due to disturbance light entering the cartridge. There is. Similarly, in order to prevent disturbance light from the negative feeding section 25, a light-shielding elastic member (one end of which is attached to the upper container 21a inside the negative guiding section 24, and the other end of which is brought into contact with the negative film 20 by its own elastic force) ( For example, a material made of Mylar with a flocked cloth attached) 26 is provided.

When storing the negative film 20 in the negative film cartridge 21, the tip of the roll-shaped negative film 20 is placed in the lower container 21b a few mm from the negative feeding section 25.
Set it so that it extends outward (see also Figure 7). Thereafter, the upper container 21a is placed on the upper container 21a, and the fitting portions 22 and 23 are fitted to connect the upper and lower containers 21a and 21b.

Note that legs 27, 27 are provided at the bottom of the lower container 21b to ensure that the negative film cartridge 21 is mounted in a fixed position in the main body of the apparatus. As shown in FIG. 7, mark portions M4, M5, and M6 indicating the type of negative film 20, etc. are provided on the side surface of the upper container 21a, respectively.

By the way, the negative film 20 has a photosensitive surface, but has a light shielding property against external light (irradiation) from the back surface. Since the negative film 20 wound into a roll is loaded into the negative film cartridge 21 in a bright room (semi-dark room), the leading and trailing ends of the film exposed during loading are exposed to light. The parts are usually tightly wound and are not exposed to light).

Therefore, the exposed area is wasted as it becomes an area where no latent image (image) can be formed, and moreover, negative film is expensive because it uses silver salt in normal cases. Waste of parts cannot be ignored from a cost perspective.

Therefore, in this embodiment, negative film backside light-shielding paper (an inexpensive material) having a length at least longer than the inner circumference of the negative film cartridge 21 is provided at the leading and trailing ends of the long negative film 20.

As shown in FIG.
A corresponding notch 21c is provided (for convenience, the pair of pull-out rollers 32 are shown separated), so that when the negative film cartridge 21 is installed in the apparatus main body, the pair of pull-out rollers 32 securely nip the negative film 20. It is configured so that

Next, a peel-apart type instant photographic apparatus using this positive sheet assembly 10 and negative film 20 will be explained with reference to FIG. 8 and subsequent figures.

This instant photographic apparatus can be broadly classified as shown in FIG. 1, and includes an optical system unit 1 that irradiates illumination light while scanning a document surface and forms an image at a predetermined position (exposure surface).
and a conveyance unit that conveys the negative film 20 to a predetermined position, exposes it, aligns it with the positive sheet assembly 10, overlaps it, and spreads the developer during this time to transfer and form an image on the positive sheet assembly 10. 2.

The optical system unit 1 includes a contact glass 3, a first traveling body 4 comprising a first mirror and a light source,
It is constituted by a second traveling body 5 consisting of a second mirror and a third mirror, a third traveling body 7 consisting of a lens 6, a fourth mirror and a fifth mirror, and a sixth mirror 8.

A fluorescent lamp is used as the light source of the first traveling body 4, and the fluorescent lamp irradiates the document placed face down on the contact glass 3 while scanning the document surface. At this time, the second running body 5 is 1/2 of the first running body 4.
By scanning in the same direction at a speed of , the optical path length is kept constant.

By moving the lens 6 and the third traveling body 7, the magnification and conjugate length during zooming are adjusted. The reflected light from the document illuminated by the fluorescent lamp is reflected by the first, second and third mirrors,
Further, the light passes through the lens 6, fourth, fifth, and sixth mirrors, and is subjected to slit exposure at exposure position A.

The conveying unit 2 includes a film feeding section 39 for feeding out a photosensitive negative film 20, a film cutter section 33 for cutting the fed-out negative film 20, and a negative film feeding section 33 for feeding and exposing the negative film 20. It is composed of a transport/exposure section 41, a positive sheet assembly transport section 42, a developing section 43, and a discharge section 44.

Hereinafter, each part will be explained in detail while explaining the conveyance operation of the negative film 20. In this instant photographic device, a negative film 20 stored in a roll in a negative film cartridge 21 is sent out by a pair of pull-out rollers 32, and then cut into a film cutter section 33 consisting of an upper rotating blade and a lower fixed blade. It is sent to the intermediate roller pair 35 through the gap.

At this time, when the leading edge of the negative film 20 is detected by the sensor S1 disposed at the exposure position A (or after a predetermined period of time after detection), the first traveling body 4 and the second traveling body 5 starts scanning, and after the negative film 20 is nipped by the pair of intermediate rollers 35, exposure and latent image formation are performed at the exposure position A.

Here, the conveying speed of the negative film 20 during exposure and latent image formation is Vn, and the traveling speed of the first traveling body 4 is V1.
, if the copy magnification is m, then the negative film 20
The transport speed Vn of is controlled according to the following relationship: V1 = Vn x 1/m.

Further, the circumferential speeds of the intermediate roller pair 35 and the pull-out roller pair 32 are approximately the same, and after a predetermined time after the negative film 20 is detected by the sensor S1 (after being nipped by the intermediate roller pair 35, or after exposure) is started), the drive of the pull-out roller pair 32 is stopped, and
It becomes free with an appropriate load.

As a result, the negative film 20 is moved to the exposure position A.
The negative film 2 can be transported while being stretched slightly on the top and in close contact with the guide plate on the transport path.
The optical path length up to the zero plane and the transport speed can be kept constant.

After the negative film 20 has been exposed to light and a latent image has been formed over a certain length, the conveyance is temporarily stopped, and then,
The upper rotary blade of the film cutter section 33 rotates while contacting the lower fixed blade, thereby cutting the film into sheets.

The stop timing of the negative film 20 is determined by counting the time elapsed since the sensor S1 detected the leading edge of the negative film 20. Therefore, the rear end portion of the cut negative film 20 is not exposed to light and no latent image is formed.

After the negative film 20 has been cut, its direction is changed by approximately 180° by the rollers 36a, 36b, 36b and the guide member 37, and the tip portion thereof is moved by the roller pair 52 to the roller pair 51 (at this time). The machine is transported until it hits a stop (which is in a stopped state).

Next, the positive sheet assembly conveying section 42
I will explain about it. Positive sheet assembly conveyance section 42
1 transports the positive sheet assembly 10 prior to the above-described transport, exposure, and cutting operations of the negative film 20, and moves from above the guide plate 61 provided at the lower right of the apparatus main body to the left in FIG. A non-photosensitive positive sheet assembly 10, which is inserted manually one by one, is conveyed. Therefore, this instant photographic apparatus does not require a paper feeding/separating device, a paper feeding cassette, etc., and is therefore not provided with them.

Then, when the positive sheet assembly 10 is inserted along the guide plate 61 of the positive sheet assembly conveying section 42 and the sensor S2 detects its tip, the insertion roller provided on the downstream side of the sensor S2 Pair 62 rotates.

The upper and lower rollers of the pair of insertion rollers 62 that are in pressure contact with each other are located outside of the developer pod 13 (see FIG. 3) attached to the tip of the positive sheet assembly 10 in order to avoid crushing the developer pod 13 (see FIG. 3). It is formed so as to hold only the both side edges of the.

The positive sheet assembly 10 conveyed by the pair of insertion rollers 62 stops after a predetermined period of time after its leading edge is detected by a sensor S3 provided downstream of the pair of insertion rollers 62, and starts the printing operation. is in a standby state where it is possible.

The transport path for the positive sheet assembly 10 is constructed by bending at least one point as shown in FIG. 1, so that external light from the insertion opening into which the positive sheet assembly 10 is inserted will not directly enter the inside of the machine. This prevents the negative film 20, which merges in front of the developing section 43, from being exposed to light.

Here, when a predetermined print switch is pressed, the negative film 20, which is in a stopped state in contact with the roller pair 51, is bent by a certain amount by the conveying force of the roller pair 52, and then the roller pair 51 is bent. It is conveyed by the rotation of the

By bending the negative film 20 in this manner, the leading edge of the negative film 20 is brought into contact with the roller pair 51.
is pressed against the nip, thereby correcting the skew. The leading edge of the negative film 20 conveyed by the pair of rollers 51 is detected by a sensor S4, and is conveyed toward the nip between the developing rollers 45a and 45b.

At this time, the pair of insertion rollers 62 rotates at a predetermined timing according to the detection signal from the sensor S4, and the positive sheet assembly 10, which is in a stopped state, is transferred to the developing rollers 45a, 45b, which are in a stopped state. The developing rollers 45a and 45b are first abutted against the negative film 20 between the nips thereof, the skew is corrected in the same manner as the negative film 20, and then the developing rollers 45a and 45b are rotated.

In this way, the positive sheet assembly 10 is conveyed first, and then the leading edge of the negative film 20 reaches the nip between the developing rollers 45a and 45b by the roller pair 51, and the two become a joined body. are transported together. At this time, a misalignment occurs between the positive sheet assembly 10 and the negative film 20, but this misalignment is caused by
The deviation is controlled to be at least smaller than the deviation c in FIG.

By doing this, the length of the negative film 20 to be cut by this amount of deviation can be reduced compared to a type in which the leading edge of the negative film 20 and the leading edge of the positive sheet assembly 10 are conveyed in alignment with each other. Can be shortened.

The bonded body (negative/positive bonded body) NP of the positive sheet assembly 10 and the negative film 20 thus bonded is conveyed while being pinched and pressed by the developing rollers 45a and 45b, thereby spreading the developer. After that, the discharge tray 4 is moved by the conveyor rollers 63a and 63b
7 and taken out by the operator after a predetermined time.

The developing roller of the developing section 43 of this instant photographic apparatus is composed of a pair of developing rollers 45a and 45b that can be brought into and out of contact with each other, as shown in FIG. The developer is spread by passing through the assembly NP, which is a combination of the positive sheet assembly 10 and the positive sheet assembly 10, while being clamped. These are separated by a separating mechanism 60, and the developing rollers 45a, 45
On the conveyance downstream side of b (on the left side in the figure), there is a sensor S5 that detects the bonded body NP, and a pair of conveyance rollers that grip the bonded body NP at both side edges and convey it onto the discharge tray 47. 63a and 63b are provided.

After the developing rollers 45a and 45b have spread the developer on the bonded body NP, the separating mechanism 60 separates the developing rollers 45a and 45b from each other in order to collect excess developer between the negative film 20 and the positive sheet assembly 10. , the rear end of the joined body NP is the developing roller 45a, 4
After the sensor S5 detects that the developing rollers 45a and 45b have passed through the rollers 5b, the developing rollers 45a and 45b are returned to the pressed state.

Further, this instant photographic apparatus has a discharge tray 47 on the conveying downstream side of the developing rollers 45a and 45b.
A conveyance roller separation mechanism 66 that forms a dark box portion 65 for storing the bonded body NP discharged upward, forms a pair of conveyance rollers 63a and 63b so as to be able to approach and separate, and separates them.
and a sensor S6 that detects the zygote NP in the dark box section 65.
After a predetermined time has elapsed since the sensor S6 detected the zygote NP, or when the door 67 for taking out the zygote NP in the dark box section 65 is opened in the direction of arrow A,
A pair of transport rollers 63 are separated by the transport roller separation mechanism 66.
a and 63b are spaced apart from each other.

When the bonded body NP is taken out from the dark box section 65 and the sensor S6 that had been detecting it no longer detects it, the conveying rollers 63a and 63b return to the pressed state. The upper developing roller 45a of the developing section 43 is rotatably supported by a pressure lever 69 that rotates around a shaft 68 fixed to a developing side plate 64, as shown in FIG.

As shown in FIG. 10, regulating members 71 and 72 for preventing the developer from spilling out are provided near the supporting shafts on both sides of the upper developing roller 45a and the developing roller 45b that presses against it from below. Negative film 2 when spreading the agent
This prevents the developer from spilling out from both ends of the 0 and positive sheet assembly 10 and staining the developing rollers 45a, 45b and the conveyance path.

The regulating member 71 is connected to the developing side plate 64 (FIG. 9).
) is supported rotatably around a pin 73 fixed to
The regulating member 72 is fixed to the developing side plate 64.

When the main body of the apparatus is in a standby state, the developing section 43 is in the state shown in FIG. Developing roller separation cams 75 are fixed at different positions in the axial direction (front and back in the figure).
The spacing cam 76 corresponding to the regulating member 71 is separated from the cam follower 77 which is rotatably supported on one end of the pressure lever 69 shown in FIG. The cams 76 are separated from each other, and the upper developing roller 45a is pressed against the lower developing roller 45b by the biasing force of the spring 78. Further, the regulating member 71 is biased and held toward the regulating member 72 by a spring 79 shown in FIG.

The regulating member 71 is set to maintain a gap G between it and the regulating member 72 during this pressurization.

On the other hand, the camshaft 74 to which the cams 75 and 76 are fixed is rotated by a spring clutch (not shown).
The cam 75 can be rotated one rotation at a time.
Each position of the cams 76 is detected by a sensor (not shown), and for example, if the cams 75, 76 are not in a predetermined standby position (the position shown in FIG. 10) when the power is turned on, they are controlled to be in the standby position.

When the positive sheet assembly 10 is inserted to the left on the guide plate 61 in FIG. 1 and the sensor S2 detects this, the cam shaft 74 moves 1/4 in the direction of arrow B from the position shown in FIG. Rotate to the position shown in FIG.

In this state, since the lever portion 71a is pushed by the cam 76, the regulating member 71 is separated from the regulating member 72, and the gap G widens. Therefore, the positive sheet assembly 10 is reliably conveyed to the nip portion between the developing rollers 45a and 45b without being stopped by the regulating member 71.

Then, when a predetermined time period has elapsed since the negative film 20 was conveyed, the developing rollers 45a and 45b rotated, and the negative film 20 was inserted between the regulating members 71 and 72, From the position shown in FIG. 11, the camshaft 74 is further rotated by 1/4 in the direction of arrow B to reach the position shown in FIG. Therefore, the regulating member 71 is at a position having a gap G similar to that shown in FIG. 10 (developer overflow regulating state).

The camshaft 74 rotates to the position shown in FIG. 12 at a predetermined timing after the sensor S4 shown in FIG. 1 detects the leading edge of the negative film 20. Then, when the negative film 20 continues to be conveyed and a predetermined period of time has elapsed after the rear end is detected by the sensor S4, the spreading of the developer by the developing rollers 45a and 45b is completed, and at that time the camshaft 74 is further rotated by 1/2. After four rotations, the position shown in FIG. 13 is reached.

[0066] Therefore, the cam 75 and the cam follower 77
, the developing roller 45a is separated from the developing roller 45b, and in the meantime, the bonded body N in which excess developer is accumulated on the rear end side of the negative film 20 and the positive sheet assembly 10.
A gap sufficient to allow P to pass is formed.

A pair of conveyance rollers 63a and 63b disposed on the conveyance downstream side of these developing rollers 45a and 45b are as follows:
As shown in FIG. 14, they are provided outside the width b of the image area of the bonded body NP, thereby preventing the roller from passing over the image forming area and adversely affecting the image. These are each rotated in the direction of the arrow in FIG. 8 by a drive source (not shown).

This pair of conveyance rollers 63a and 63b are as follows:
As shown in FIG. 8, the upper conveyance roller 63a is configured to be able to approach and separate from the lower conveyance roller 63b by means of a conveyance roller separation mechanism 66.

The conveyance roller separation mechanism 66 has a pin 82
A conveying roller 63a is rotatably attached to one end of a lever 81 that is swingably supported by a lever 81, and a spring (not shown) is attached to the end of the lever to rotate the conveying roller 63a.
The movable shaft of the solenoid 83 is attached to the other end of the lever 81, and the solenoid 83
When activated (turned on), the lever 81 moves the upper conveyance roller 63a away from the upper conveyance roller 63b.

The dark box section 65 provided on the downstream side of the conveyance rollers 63a and 63b is connected to the output tray 47 and a curled portion with the rear end side (right side in FIG. 8) protruding upward. It is rotatably supported by a support shaft 84 provided,
It also includes a removably attached light-shielding lid 85.

This dark box section 65 is shown in FIG. 8 with the lid 85 closed.
In the state shown in FIG. 3, the assembled body NP of the negative film 20 and the positive sheet assembly 10 is received in the space formed by the lid 85 and the discharge tray 47. This space then becomes a dark room where external light is blocked.

Therefore, for example, the positive sheet 11
In the case of a transparent material for HP or a thin paper-like material, transmitted light enters from the back side of the positive sheet 11 during the period from the developer spreading until the latent image on the negative film 20 is fixed. However, in this embodiment, since the dark box portion 65 can prevent such exposure, a good image can be obtained.

Since the lid 85 is rotatable and removable, it can be removed and cleaned easily when cleaning the top of the discharge tray 47. Further, the ejection tray 47 is also removably provided on the main body of the apparatus, and can be removed so as not to get in the way when transporting the main body of the apparatus or when replacing the negative film cartridge 21.

Furthermore, near the support shaft 84 of the lid 85,
A shielding plate (not shown) is provided that turns on a sensor S7 provided on the cover 86 side when the lid 85 is closed, thereby making it possible to detect whether the lid 85 is open or closed.

In this embodiment, a transmission type photosensor is used as the sensor S7, but a sensor such as a micro switch or a proximity switch may also be used.

Further, on the discharge side of the lid 85 (left side in FIG. 8), a rotatably supported door 67 is provided so as to be openable in the direction of arrow A. Alternatively, a weak spring or the like is used to close it in the normal state as shown in the figure.

As shown in FIGS. 15 and 16, the door 67 has a negative film 20 on the outside of the width b shown in FIG.
A protrusion 67a that comes into contact with the bonded body NP of the positive sheet assembly 10 is provided so that when the bonded body NP pushes open the door 67 and is ejected, the door 67 does not come into contact with a portion that adversely affects image quality. I have to.

The protrusions formed at both ends of the lower side of the door 67 are those protruding downward from the lower edge 67c of the door 67', like the protrusions 67b and 67b shown in FIGS. 17 and 18. You can.

As shown in FIG. 8, this door 67 has its position determined by the distance u from the nip between the developing rollers 45a and 45b to the contact area 88 with the discharge tray 47, as shown in FIG.
When P stops in the state shown in FIG.
When the distance T from the nip of 3b to the door 67 is shorter than the total length of the bonded body NP and the bonded body NP is conveyed by the conveyance rollers 63a and 63b, the tip of the bonded body will reach the door 6.
7 is pushed open so that it protrudes outside.

[0080] In this instant photographic device,
Joined body N transported by transport rollers 63a, 63b
When the sensor S5 detects the rear end of P (the detection signal changes), the developing rollers 45a and 45b return to the above-described pressure contact state and enter a standby state. Then, when the sensor S6 detects the bonded body NP on the discharge tray 47,
The next image forming operation is controlled to be prohibited.

In this embodiment, during the fixing time (approximately 30 to 40 seconds) after the developer is spread, the bonded body NP remains in the dark box 65.
After the fixing time has elapsed, the bonded body NP is transported by transport rollers 63a and 63b, and moved to a position where the operator can take it out of the dark box section 65 by pushing open the door 67 in the direction of arrow A. is discharged until

As described above, the instant photographic apparatus according to this embodiment is capable of forming the positive sheet assembly 10 by passing the assembled body NP of the negative film 20 and the positive sheet assembly 10 between the pair of developing rollers 45a and 45b that are in pressure contact with each other. The separating mechanism 60 spreads the developer provided on the pair of developing rollers 45a, 45a, and 45a.
45b are spaced apart from each other, excess developer accumulated on the rear end side of the assembly NP in the conveying direction is not crushed by the developing roller, and this prevents the developer from scattering inside the apparatus and contaminating the inside of the machine. Never happened.

[0083] Then, the bonded body NP is transferred to the developing roller 4.
The developing rollers 45a, 45 are transported by a pair of conveying rollers 63a, 63b provided on the downstream side of the developing rollers 5a, 45b.
When the sensor S5 detects the rear end of the bonded product NP, the separation mechanism 60 is driven to return the developing rollers 45a and 45b to a state of pressure contact with each other. Developing roller 45a,
Since they come into pressure contact after passing through the nip of 45b, the surplus developer accumulated on the rear end side in the conveyance direction after being spread is not crushed and scattered.

Further, a dark box portion 65 is formed on the conveyance downstream side of the developing rollers 45a and 45b, and the conveyance roller 63
a, 63b are also made to be able to approach and separate, and after the sensor S6 detects the bonded body NP discharged onto the discharge tray 47 and the fixing of the image is completed, for example, after a predetermined time of 30 to 40 seconds has elapsed, or when the dark box section 65 is closed. Since the conveying rollers 63a and 63b are separated from each other when the door 67 is opened, the transfer rollers 63a and 63b are moved away from each other when the above-mentioned predetermined time necessary for fixing the image after spreading the developer has elapsed or when the door 67 is opened. Since the transport rollers 63a and 63b are separated from each other, the bonded body NP with a good image fixed thereon can be easily taken out from the dark box section 65.

[0085] Then, when the sensor S6 no longer detects the bonded body NP by removing the bonded body NP from the discharge tray 47, the conveyance roller separation mechanism 66 returns the conveyance rollers 63a and 63b, which have been in the separated state, to a state in which they are pressed against each other. Therefore, the subsequent joined body NP of the negative film 20 and the positive sheet assembly 10 can be smoothly discharged.

By the way, in this instant photographic apparatus, the printing operation is performed when a certain period of time has elapsed without any printing operation after the positive sheet assembly 10 is inserted into the machine from above the guide plate 61 shown in FIG. Instead, it is automatically discharged to the discharge section 44. All of the control is performed by a control device 400 shown in FIGS. 19 and 20.

FIG. 19 is a circuit diagram showing the configuration of the control device 400. The CPU 1001 has RA in one chip.
M, 8-bit timer, 16-bit event counter, A
The RAM 1002 has a built-in lithium battery, has a capacity of 2 Kbytes, and stores individual data of the device and data such as the total number of sheets.

[0088] 8254 (1003) outputs pulses for driving a fluorescent lamp and a CD servo motor (main motor). The I/O expander 1004 drives each motor, electromagnetic clutch, solenoid, etc., and controls the operation section. Note that the other configurations are not directly related to the present invention, so they are only shown in the drawings and their explanations will be omitted.

As shown in FIG. 20, the control section 400 includes an operation section 500 for displaying various messages and performing key input, etc., a switching power supply 600 for supplying power to the main body of the apparatus, and an optical system unit. 1 fluorescent lamp 373 (
a fluorescent lamp ballast 372 for obtaining stable output of the fluorescent lamp, a fluorescent lamp heater 374, and a fluorescent lamp 37.
3, a main motor 361 that serves as a power source for conveying the negative film, the cutter, and each roller, and a scanner motor 362 that drives the scanner.
, a mirror motor 363 for moving the mirror when changing magnification, a lens motor 364 for moving the lens when changing magnification, various clutches 370, solenoids 371 for clutches, and various sensors except sensor S20 (S1 to sensor S7) is connected.

FIGS. 21 to 23 are flowcharts showing a standby processing routine, which is one of the routines executed by the control device 400. The standby process checks the device status (presence or absence of jam, etc.)
(door opening/closing, presence/absence of negative film cartridge loaded, etc.)
This is a process in which the printer checks the conditions of each part, receives commands from the print key, and moves on to the next copying process.

The control device 400 operates as shown in FIG. 2 at a predetermined timing.
When the routine 1 starts, first in step 1, it is checked whether the negative film 20 has been detected for a predetermined time or longer by each sensor arranged on the conveyance path of the negative film 20, and if the negative film 20 has been detected for a predetermined time or longer. If a jam is detected, it is determined that a jam has occurred, and the process proceeds to step 2, where the jam display is turned on and an error flag is set; otherwise, the process proceeds directly to step 3.

In step 3, the open/closed state of the door 67 is checked, and if the door 67 is open (OPEN), the process proceeds to step 4, where the door OPEN display is turned on and an error flag is set, and then step 5 At step 6, the presence or absence of the developing roller is checked, and if it is not present, the absence of the developing roller is displayed and an error flag is set at step 6.

At this time, although it is not described in the flowchart of FIG. 21, it is checked whether the door 67 of the dark box section 65 of FIG. Also set the error flag.

After that, in step 7, it is determined whether the variable magnification key of the operation unit 500 (FIG. 20) is turned on.
If it is turned on, the process proceeds to step 8, and after performing a magnification change operation according to the specified contents, the process proceeds to step 9. If it is not turned on, the process directly proceeds to step 9.

[0095] Then, in step 9, it is determined whether or not the temperature key is on, and if it is on, in step 10, a process is performed to display the temperature according to the specified content, and then step Proceed to step 11, and if it is not turned on, proceed directly to step 11.

In step 11, the negative film 20 provided on the side of the negative film cartridge 21 is removed.
A 3-bit black and white code (negative film type identification mark) indicating the type is read, the presence or absence of the negative film cartridge 21 and the type of negative film 20 are detected and displayed.

[0097] Thereafter, in step 12 it is determined whether or not an error flag has been set (error flag = 1), and if so, the process advances to step 13 to display a message etc. corresponding to the error, and also to display the error flag. The flag is initialized to zero, and if no error flag is set, the process proceeds to the routine shown in FIG.

In step 14 of FIG. 22, it is determined whether or not the negative film cartridge 21 is installed, and if it is installed (yes), the process advances to step 15.
Negative film 2 is detected from the signal of detecting the presence or absence of negative film 20.
It is determined whether 0 is a film portion or a light shielding portion, and it is also determined whether there is a negative film.

Next, in step 16, it is determined whether the detection signal of the sensor is from the light-shielding paper portion, and if so, the process proceeds to step 17, after which the light-shielding paper portion is ejected.
Return to Step 1 of 1.

Further, when it is determined in step 16 that it is not the light-shielding paper part, the process proceeds to step 18, where it is determined whether or not it is a negative film part, and if so (in the normal case, the light-shielding paper is the leading edge) (If the film section is detected next), the process proceeds to step 19 to turn off the no negative film display, and in step 20 the positive sheet standby flag (a flag indicating that the positive sheet is ready) is checked.

[0101] If it is not in the standby state, the process proceeds to step 22, but if it is in the standby state, the process proceeds to step 23, where it is determined whether the positive sheet ejection switch is on, and if it is on, the process proceeds to step 23. Proceed to step 25 in Figure 23, but if it is not on, step 2 in Figure 23
Proceed to step 6.

On the other hand, if no negative film is detected in step 18, such as when the light-shielding paper is on the rear edge side (NO
(judgment), the process proceeds to step 21 to display that there is no negative film, and then, in step 22, a positive sheet insertion check (judged based on the detection signal of sensor S3 in FIG. 1) and its corresponding actions are executed, and the next step is performed. After setting the fixed time T in the timer P in the CPU at step 24, the process returns to step 1 in FIG.

[0103] The certain period T is such that even if the positive sheet assembly 10 is left in the apparatus, the more the image deteriorates, the more the image deteriorates.
This is the longest period of time during which the temperature of the positive sheet assembly 10 does not rise, and is determined by taking into account the temperature of the environment in which the apparatus is used.

In step 26 of FIG. 23, 1 is subtracted from the set time of timer P, and in step 27 it is determined whether the set time of timer P has become 0. If the value is not 0, the process proceeds to step 28, and if it is 0, the process proceeds to step 25 to execute the discharge operation of the positive sheet assembly 10, which will be described next, and then returns to step 1 in FIG.

The discharge operation of the positive sheet assembly is carried out by the electromagnetic clutches 375 and 3 respectively installed on the insertion roller pair 62 and the conveyance roller 63b (drive side) in FIG.
76 together and rotate them in the forward direction,
After the positive sheet assembly 10 is discharged onto the discharge tray 47 of the discharge section 44, the process returns to step 1 in FIG.

Note that during this ejection, the pair of developing rollers 4
5a and 45b are kept separated from each other, so that the developer attached to the positive sheet assembly 10 passing between them will not be spread.

In step 28, it is determined whether or not the print key is on, and if not, the processes from step 1 in FIG. 21 are repeated until the print key is turned on. When the print key is turned on, the process proceeds to step 29, where it is determined whether the dark box section 65 is set in a normal state.

That is, the detection signal of the sensor S7 which detects the open/closed state of the lid 85 of the dark box section 65 in FIG. 8 is inputted to determine whether the lid 85 is open/closed or not. The process proceeds to step 30, where an LED (not shown) is turned on to indicate an abnormality in the discharge section, and then the process returns to step 28.

If the dark box section 65 is in a normal state at step 29, the process proceeds to step 31, where the LED is turned off, and the process ends. Note that the positive sheet ejection switch is turned on by pressing the positive sheet ejection switch provided on the operating section 500 in FIG. , the operator can freely discharge the positive sheet assembly 10 automatically.

FIG. 24 shows another embodiment of the present invention, in which parts corresponding to those in FIG. 1 are given the same reference numerals. This instant photographic apparatus is provided with a sensor S8 as a temperature detection means for detecting the temperature inside the apparatus in the vicinity of the positive sheet assembly transport section 42, and a printing operation is performed after the positive sheet assembly 10 is inserted into the apparatus. A certain period of time for discharging the liquid when it is not carried out for a certain period of time is set according to the temperature detected by the sensor S8.

That is, in this embodiment, when the positive sheet assembly 10 is inserted into the machine and no printing operation is performed, the certain period of time from when it is inserted into the machine is optimal depending on the temperature inside the machine. It is set (variable) to the time.

[0112] This means that if the time from when the positive sheet assembly 10 is inserted to when it is ejected is set as a fixed time, the highest operating environment temperature at which the device is normally used is assumed. However, if the expected usage environment temperature is high, the above fixed time may be shortened to 60 seconds or less, causing inconvenience in such cases. This is to prevent this from happening.

[0113] In other words, if it takes too long to set the original or set the print conditions after inserting the positive sheet assembly 10 into the machine, the above-mentioned period of time is fixed. If it is set to 60 seconds or less, there will be an inconvenience that if you try to start printing but a certain amount of time has elapsed, the print will be ejected without being printed. There was also a risk that the operator might mistakenly think that a malfunction had occurred.

However, in this embodiment, the fixed time is set to an optimal time depending on the temperature inside the machine, so the above-mentioned inconvenience does not occur. and,
The setting of the certain period T is determined by the control device (not shown because it has the same configuration as the control device 400 in FIG. 19) according to the diagram shown in FIG. 25 based on the temperature inside the aircraft detected by sensor S8. Therefore, the discharge time (fixed time T) of the positive sheet assembly 10 is set to become shorter as the temperature inside the machine becomes higher.

Although the diagram in FIG. 25 shows a smooth curve, the actual setting of the constant time T may be set in several steps separated by a predetermined width.

Furthermore, in each of the above embodiments, the developing roller 45
A pair of conveyance rollers 63a, 63 are provided on the conveyance downstream side of a, 45b.
Although an example of an instant photographic device is shown in which the transport rollers 63a and 63b are provided, the present invention can also be applied to an instant photographic device that is not provided with such conveyance rollers 63a and 63b. In that case, if no printing operation is performed for a certain period of time after the positive sheet assembly 10 is inserted into the machine, the positive sheet assembly 10 is discharged to a position where it is conveyed by the pair of insertion rollers 62 in FIGS. 1 and 24. It is discharged onto the tray 47.

[0117]

[Effects of the Invention] As explained above, according to the instant photographic device according to the present invention, if a positive sheet is inserted into the device and the printing operation is not started for a certain period of time, the positive sheet is automatically ejected from the device. As a result, the positive sheet is not heated to a temperature that would degrade the image when it is printed, so it is possible to always obtain stable and good image quality (color reproduction).

[0118] Furthermore, if a means is provided for setting the fixed time period for discharging the positive sheet outside the machine in accordance with the temperature detected by the temperature detecting means for detecting the temperature inside the machine, the time for discharging the positive sheet can be set according to the temperature inside the machine. Since it can be changed according to the time, positive sheets can be ejected in a more optimal time
This eliminates the need for positive sheets to be ejected out of the machine while it takes time to set print conditions, etc.

[Brief explanation of drawings]

FIG. 1 is an overall configuration diagram showing an instant photographic device which is an embodiment of the present invention.

FIG. 2 is a perspective view showing a positive sheet assembly used in the same instant photographic apparatus.

FIG. 3 is a side view of the positive sheet assembly of FIG. 2;

FIG. 4 is a perspective view showing a negative film 20 wound into a roll.

5 is a plan view showing a single positive sheet of the positive sheet assembly of FIG. 2; FIG.

6 is a sectional view showing a state in which the negative film 20 of FIG. 4 is housed in a negative film cartridge 21. FIG.

FIG. 7 is a perspective view showing the negative film cartridge and a pull-out roller provided in the vicinity thereof.

8 is a configuration diagram showing the vicinity of a developing section and a discharging section of the instant photographic apparatus shown in FIG. 1. FIG.

FIG. 9 is a configuration diagram showing a developing section of the instant photographic apparatus.

FIG. 10 is a schematic diagram showing a standby state of the developing section.

11 is a schematic view showing the developing section in a state where the camshaft 74 has rotated 1/4 from the state shown in FIG. 10. FIG.

[Fig. 12] Similarly, the developing section is further removed from the state shown in Fig. 11.
FIG. 4 is a schematic diagram showing a state in which it has been rotated by /4.

[Fig. 13] Similarly, the developing section is further removed from the state shown in Fig. 12.
FIG. 4 is a schematic diagram showing a state in which it has been rotated by /4.

FIG. 14 is a front view showing a pair of conveyance rollers provided on the conveyance downstream side of the developing section and the bonded body NP passing between them.

15 is a plan view showing an example of a door 67 provided in the dark box section of the instant photographic device shown in FIG. 1. FIG.

16 is a side view of the door 67 of FIG. 15. FIG.

FIG. 17 is a plan view similar to FIG. 15 showing a different example of the door.

FIG. 18 is a longitudinal cross-sectional view of the central portion of the door of FIG. 17;

19 is a block diagram showing the configuration of a control device 400 that controls the entire instant photographic device of FIG. 1. FIG.

FIG. 20 is a block diagram showing the control device 400 of FIG. 19 and its related configuration.

FIG. 21 is a flowchart showing a routine from step 1 to step 13 of a process for transitioning to a copying operation process similarly executed by the control device 400.

FIG. 22 is a flow diagram showing steps 14 to 24 of the same routine.

FIG. 23 is a flow diagram showing steps after step 25 of the same routine.

FIG. 24 is an overall configuration diagram similar to FIG. 1 showing another embodiment of the present invention.

25 is a diagram showing the relationship between the internal temperature of the instant photographic apparatus shown in FIG. 24 and the fixed time T for discharging the positive sheet assembly 10. FIG.

[Explanation of symbols]

11 Positive sheet
20 Negative film 41 Negative film transport/exposure section 42
Positive sheet assembly transport section 43 Developing section
44 Discharge section 45a, 45b Developing roller 47 Discharge tray 62 Insertion roller pair
63a, 63b Conveyance roller 65 Dark box section
S3 sensor S8 sensor (temperature detection means) 400 control device NP bonded body (negative/positive bonded body)

Claims (2)

[Claims] Claim 1: In a peel-apart type instant photographic device in which a negative film and a positive sheet with developer are set separately and set at different positions in the device, a printing operation is performed after the positive sheet is inserted into the device. An instant photographic apparatus, characterized in that the instant photographic apparatus is provided with means for ejecting the positive sheet outside the machine after a certain period of time has elapsed without the positive sheet being removed. 2. The instant photographic apparatus according to claim 1, further comprising a temperature detecting means for detecting an internal temperature within the apparatus, and means for setting the predetermined time according to the temperature detected by the temperature detecting means. An instant photographic device characterized by: