JP2001154259A - Instant printer and film pack used therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To record an image from the end of an exposing surface along a feeding direction. SOLUTION: A photosensitive sheet 32 is irradiated with linear printing light orthogonal to the feeding direction of a film unit 14 through an exposure aperture 18 by a light emitting head 60 synchronously with the feeding of the film unit 14 by a film feeding mechanism. The head 60 is arranged along one edge 18a of the aperture 18 nearer to a developing roller side.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an instant printer for exposing a film unit with a light emitting head which is driven in synchronization with the feeding of the film unit, and to a film pack used for the instant printer.

[0002]

2. Description of the Related Art JP-A-11-249239 discloses that
There has been proposed an instant printer that records an image on a self-developing film unit with a light emitting head. This light emitting head generates linear light parallel to the main scanning direction. In this printer, first, the light emitting head is reciprocated two times in the sub-scanning direction to record an image of two of the three primary colors. For the remaining one color, the light emitting head is fixed, and the film feeding mechanism is driven to record while the film unit is fed in the sub-scanning direction.

[0003] The film feeding mechanism comprises a scraping claw and a pair of developing rollers. These are the same as the mechanisms built into the well-known instant camera, and operate by driving a single motor. A plurality of film units are stored in a film pack. The scraping claw discharges the film unit from the film pack and sends the film unit toward the developing roller pair on the camera side. The film unit is provided with a pod portion containing a developing solution at the leading end in the feeding direction. The developing roller pair tears out the pod by feeding the film unit while nipping it, and uniformly develops the developing solution on the photosensitive surface.

Incidentally, as a light emitting head, a multi light emitting head in which three color light emitting arrays are arranged in the sub-scanning direction is known. When this head is used, a full-color image can be recorded on the film unit in the process of fixing the head and sending out the film unit, so that the head moving mechanism can be omitted and the time required for recording is greatly reduced. can do.

[0005]

However, depending on the position where the multi-light emitting head is fixed, there is a possibility that an image cannot be recorded at the end of the exposure surface of the film unit in the feeding direction. For example, when the exposure is started by the multi-light emitting head at the same time when the film unit is sent out, if the timing of the feeding of the film unit and the start of the exposure of the multi-light emitting head are shifted, an image is formed on an end of the exposure surface of the film unit in the sending direction. Can not record properly. Therefore, when the light emitting head is arranged in the sending direction, that is, in the direction of the developing roller pair,
There is a possibility that the developing solution is spread on the photosensitive surface earlier than the start of recording, and the exposure of the multi-light emitting head is blocked by the developing solution.

Exposure of the multi-light emitting head is performed through an exposure opening provided in the film pack. This exposure opening is an opening for full-surface exposure for exposure with an instant camera. Therefore, when the light emitting head is arranged in the direction of the developing roller pair, it can be moved only to the end of the exposure opening in the feed direction. Even if such a restriction on the mounting position of the multi-light emitting head occurs, there is a problem that the recording cannot be properly performed from the end of the exposure surface.

The present invention has been made in view of the above circumstances, and provides an instant printer in which an image is appropriately exposed from an end of an exposure surface. It is another object of the present invention to provide a film pack in which the mounting position of the light emitting head is not restricted.

[0008]

In order to achieve the above object, in the instant printer according to the present invention, a self-developing type film unit having a photosensitive sheet, a cover sheet, and a pod containing a developer is provided. A loading chamber for accommodating a plurality of sheets and a film pack provided with an exposure opening for exposing the photosensitive sheet to light and an outlet for discharging the exposed film unit; and a film for passing the exposed film unit through the outlet. While pressing the claw to be sent out of the pack and the film unit sent out from the discharge port to crush the pod,
A film feed mechanism including a pair of developing rollers for developing the developing solution flowing out of the pod portion between the photosensitive sheet and the cover sheet while pressing and sending the film unit; and an exposure opening near the developing roller. An exposure head that is arranged along one edge and irradiates the photosensitive sheet with linear print light perpendicular to the feeding direction of the film unit through the exposure opening; and the photosensitive sheet is loaded in the loading chamber. The exposure head is disposed so as to face between one end edge of the exposure opening closer to the discharge port than the effective exposure range of the photosensitive sheet and the effective exposure range of the photosensitive sheet.

In the instant printer according to the second aspect, the exposure head according to the first aspect is located at a position farther from the developing roller than an outflow end of the developing solution that has flowed out by crushing the pod portion with the developing roller. It is provided.

In the instant printer according to the present invention, a plurality of self-developing film units having a photosensitive sheet, a cover sheet, and a pod section containing a developing solution are housed, and the exposed film units are discharged. A first discharge opening for exposing the photosensitive sheet and a first exposure opening having substantially the same width as the first exposure opening;
A loading chamber for loading a film pack having a second exposure opening for partially exposing the outside of the effective exposure range of the photosensitive sheet at a position closer to the pack discharge port than the exposure opening; A claw that feeds out of the film pack through the pack outlet, and a pair of developing rollers that pressurizes the film unit sent out of the pack outlet to spread the developing solution flowing out of the pod between the photosensitive sheet and the cover sheet A film feeding mechanism including: a film pack loaded in the loading chamber, and disposed so as to face the second exposure opening, and linear print light orthogonal to the feeding direction of the film unit is passed through the second exposure opening. An exposure head for irradiating the photosensitive sheet.

In the instant printer according to the fourth aspect, the distance between the developing roller and the exposure head according to the third aspect is set to be greater than the distance between the leading end of the film unit in the feeding direction and the leading end of the effective exposure range of the photosensitive sheet. Is also shortened.

In the instant printer according to the fifth aspect, the interval from the developing roller according to the third aspect to the outflow range of the developing solution is shorter than the interval between the developing roller and the exposure head. The developing roller and the exposure head are arranged at a distance more than the distance between the leading end of the film unit in the feeding direction and the leading end of the effective exposure range of the photosensitive sheet.

In the film pack according to the present invention, the first exposure opening for exposing the effective exposure range of the photosensitive sheet and the width of the first exposure opening are substantially the same as those of the first exposure opening. And a second exposure opening for partially exposing the outside of the effective exposure range of the photosensitive sheet at a position close to the second exposure opening.

In the film pack of the present invention, the first and second exposure openings of the present invention are shielded from the inside by a light-shielding cover which is housed so as to be stacked on the front surface of a plurality of film units.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 1 showing the structure of a film pack according to the present invention, a film pack 10 has a vertically long rectangular shape, and includes a case body 11, a body cover 12, a light shielding cover 13, and a plurality of film units. 14 and a light shielding sheet 15.

Inside the case body 11, a vertically long rectangular light shielding cover 13 and a plurality of film units 14 are sequentially inserted. An exposure opening 18 for performing full-surface exposure with a well-known instant camera is provided on the front surface of the case body 11.
Are formed. A notch 19 into which a well-known scraping claw is inserted is provided below the exposure opening 18. A pack outlet 20 is formed on the upper surface of the case body 11. From the pack outlet 20, a rectangular film unit 14 is fed out in the longitudinal direction. The pack discharge port 20 is closed by a soft light-shielding seal 21 so as to be freely opened and closed from the outside. The light shielding cover 13 covers the exposure opening 18 from the inside of the film pack 10.

A tape 13a for closing the notch 19 is adhered to the light shielding cover 13. The body cover 12 covers the back of the case body. This body cover has two holes 12a, 12a.
b and two unit support protrusions 12c and 12d are provided. The push-up members provided on the camera side when loaded into the camera enter the holes 12a and 12b.

The unit support projections 12c and 12d are vertically elongated and have a shape protruding toward the exposure opening 18 in an arc shape. These unit support protrusions 12c and 12d are provided at both ends of the inner surface of the main body lid 12 along the short direction. These unit support projections 12c,
12 d pushes up the rear surface of the last stacked film unit 14 toward the exposure opening 18 so that the light shielding cover 13 or the film unit 14 is brought into close contact with the exposure opening 18.

The light shielding sheet 15 is composed of two elastic sheets 23 and 24. These sheets 23, 24
Are stored in the case body 11 in a stacked state. Each of the sheets 23 and 24 has such a length that its length in the short direction is set between the unit support protrusions 12c and 12d.

One sheet 23 has a central portion in the longitudinal direction attached to the lid 12. The sheet 23 normally covers the holes 12a and 12b, and when loaded into the camera, the upper and lower ends in the longitudinal direction are bent toward the exposure opening by a push-up member on the camera side. Abut the inner wall of the

The other sheet 24 has a lower end in the longitudinal direction attached to a lower end 23c (a hatched area) of the one sheet 23. Usually, the one sheet 23 is prevented from loosening to form the holes 12a, 12b. When the one sheet 23 is elastically bent, the film unit 14 is pushed substantially flatly toward the exposure opening.

As shown in FIG. 2, the film unit 14 includes a mask sheet 30, a transparent cover sheet 31, a photosensitive sheet 32, a pod 33 containing a developing solution,
The trap unit 34 that absorbs excess developer is a basic component. The mask sheet 30 has a front end 14a and a rear end 14b in the longitudinal direction (feeding direction) on the exposure surface 3 side.
5 is folded back toward the side of FIG. Tip 14a
A pod portion 33 is incorporated in the folded portion, and a trap portion 34 is incorporated in the folded portion at the lower end. Between these folded portions, a cover sheet 31 is supported on the exposure surface 35 side, and a photosensitive sheet 32 is supported on the image surface 36 side with a predetermined gap.

On the mask sheet 30, a rectangular exposure frame 37 for defining an exposure range is formed on the side of the exposure surface 35, and a rectangular screen frame 38 for defining a screen range on the side of the image surface 36 is formed. . The screen frame 38 has a size slightly smaller than the exposure frame 37. Thus, the image range of the film unit 14 becomes the effective exposure range because the image can be visually recognized only in the range defined by the screen frame. The photosensitive sheet 32 includes a photosensitive layer, a diffusion transfer layer,
And an image receiving layer. The photosensitive sheet 32 is set on the film pack 10 such that the photosensitive layer side faces the exposure opening 18.

The pod 33 is filled with a developing solution. The developing solution is spread between the cover sheet 31 and the photosensitive sheet 32 from the pod 33. When the developing solution is developed, the diffusion transfer layer of the photosensitive sheet 32 transfers the latent image recorded on the photosensitive layer to the image receiving layer. The image transferred to the image receiving layer is observed as a positive image through the screen frame 38. The trap unit 34 captures and hardens the developing solution remaining between the cover sheet 31 and the photosensitive sheet 32.

The film pack 10 is used not only for a well-known instant camera but also for an electronic still camera 39 with a printer shown in FIG. The camera 39 has a photographing lens 40, a shutter button 41, a finder objective window 42, and a loading lid 43 on the front surface, and a lid 44 on the upper surface. The lid 44 closes a discharge port from which the film unit 14 is discharged, and is pushed up by sending out the film unit 14, and returns to the closed position naturally after the discharge is completed. The upper side of the loading lid 43 opens toward the near side with the hinge provided on the lower side as a center by an operation from an operation unit (not shown) provided on the back side. When the loading lid 43 is opened, the internal film loading chamber is exposed. Although not shown, an LCD display panel is provided on the back surface.

Behind the taking lens 14, a CCD image sensor 46 is incorporated as shown in FIG. C
A subject image is formed on the photocathode by focusing the photographing lens 40 on the CD image sensor 46. CCD
The image sensor 46 converts an optical subject image into an electric imaging signal and outputs it by driving the CCD driver 47.

Micro color filters of R, G, and B are arranged in a matrix on the photoelectric surface of the CCD image sensor 40. An image signal output serially for each color is amplified to an appropriate level by an amplifier 48 and then converted to a digital signal by an A / D converter 49.

The A / D converter 49 digitally converts the image pickup signal to generate image data, and sequentially inputs the image data to the image data processing circuit 50. Image data processing circuit 50
Performs signal processing such as white balance adjustment and gamma correction on input image data. The image data processing circuit 50 further performs processing based on the processed image data.
A video signal corresponding to the NTSC composite signal is generated and sent to an LCD driver 53 via a D / A converter 51 and an amplifier 52. LCD driver 53 is L
By driving the CD panel 54, the captured image is displayed on the LCD panel 5.
4 is displayed.

The system controller 55 controls the electrical operation of the camera 39 as a whole, including the image data processing circuit 50. System controller 55
Monitors a signal from the operation unit 57 including the shutter button 41 and the like through the I / O port 56, and performs signal processing according to the input signal.

The memory 55a includes an image data processing circuit 50
Is stored for each screen. The motor driver 58 drives a film feeding motor 59 according to a command from the system controller 55.

As shown in detail in FIG. 5, the multi light emitting head 60 has a line light emitting head 61 of three colors and a selfoc lens 62. The three color line light emitting heads 61 are composed of red, green, and blue line light emitting heads 61a to 61c arranged side by side in the sub-scanning direction (the film unit sending direction). Each of these line light emitting heads 61a to 61c has a configuration in which minute light emitting diodes (LEDs) that emit light of each color are arranged in a line in the main scanning direction. One light emitting diode corresponds to one pixel when printing is performed. The selfoc lens 62 focuses the R, G, and B lights emitted from the three color line light emitting heads on the photosensitive layer of the photosensitive sheet 32 through the exposure openings 18 in one line. Code 6
0a indicates a focus position where the light emitting head 60 focuses the print light.

The multi-light emitting head 60 is fixed to a wall surface of the inside of the loading chamber 63 of the camera 39 facing the loading lid 43, and a line light emitting head 61 of the wall surface.
Exposure opening 1 in which a to 61c are closer to the pack discharge port 20 side
8 is disposed along the one edge 18a of the film 8 and between the one edge 18a of the exposure opening 18 and the front end 38a of the screen area with respect to the film unit 14 set in the film pack 10. They are arranged so that the in-focus position matches.

The head driver 64 drives each of the line light emitting heads 61a to 61c of the multi light emitting head 60 according to a command from the system controller 55. Image data is further sent to each of the line light emitting heads 61a to 61c from the line memory 65, and this image data is used for controlling the individual light emitting time of the light emitting diode.

The speed sensor 66 is connected to the film unit 14
The feed amount and feed speed are measured. This speed sensor 6
6 is a film unit 1 as shown in detail in FIG.
The roller 67 includes a roller 67 that is in rolling contact with the roller 4, a pulse encoder provided on the roller 67, and a signal processing circuit 70. The roller 67 is provided inside the loading chamber 63, and enters the inside of the exposure opening 18 when the film pack 10 is set in the loading chamber 63, and
8 contacts the film unit 14 set. The roller 67 is moved by the multi-light emitting head 60 to the photosensitive sheet 3.
2 is provided at a position where the contact is continued until the exposure is completed.

The pulse encoder is a slit rotating plate 68
And a sensor 69. The slit rotating plate 68 is provided with a number of slits radially about the rotation axis, and rotates coaxially with the roller 67. The sensor 69 detects the passage of the slit and outputs a one-pulse signal to the signal processing circuit 70 every time the slit passes. Signal processing circuit 7
0 detects the feed speed and feed amount of the film unit 14 by measuring the pulse detection interval based on the reference clock. The signal corresponding to the feed rate is
It is sent to the speed correction calculation unit 71 described with reference to FIG. Also, film unit 1
The signal corresponding to the feed amount of 4 is used as a timing signal for driving the multi light emitting head 60 by the system controller 5.
5 is used.

The speed correction calculating section 71 shortens the non-light emitting time between the light emitting time for each line and the next light emitting time when the film feeding speed increases, and increases the non-light emitting time when the film feeding speed decreases. The light emitting interval of the multi light emitting head 60 is controlled based on the signal of the feed speed. As a result, the length and density of the recorded pixel do not change regardless of the speed change.

A film feeding mechanism is arranged inside the loading chamber 63 of the camera 39. The film feeding mechanism
Deployment roller pair 72, scraping claw 73, and motor 5
9 and so on. The drive of the motor 59 is transmitted to the developing roller pair 72 and the reciprocation conversion mechanism 75 via the reduction gear train 74. Reciprocating motion conversion mechanism 75
Converts the rotational drive to reciprocal drive and
To communicate. In the process of reciprocating the film unit 14 in the feeding direction of the film unit 14, the claw 76 hooks the rear end 14 b of the film unit 14 through the notch 19, and the front end 14 a is applied to the developing roller pair 72 via the pack discharge port 20. And send it out. The unfolding roller pair 72 rotates longer than the time required for one reciprocation of the scraping claw 73. The unfolding roller pair 72 rotates longer than the time required for the sweeping claw 73 to move forward.

The developing roller pair 72 includes two rollers 77,
78, which are arranged to face each other. 2
One of the rollers 77, 78 is biased toward the other roller 78 by the bias of a spring 79.

As shown in FIG. 7, when the loading lid 43 is closed, the film pack 1 is placed inside the loading chamber 63.
First and second positioning members 80 and 81 are provided for abutting on and positioning the same. The first positioning member 80 fits between one end edge 18a of the exposure opening 18 and the front end 38a of the screen area of the film unit 14 set in the exposure opening 18 with respect to the focus position 60a of the multi-light emitting head 60. The film pack 10 is positioned in the feeding direction as described above. The second positioning member 81 holds the film pack 10 with the loading lid 43 so that the photosensitive surface of the photosensitive sheet 32 of the film unit 14 set in the exposure opening 18 matches the focus position 60a of the multi-light emitting head 60. The film unit 14 is positioned in the overlapping direction. Although not shown, the film pack 10 is positioned so that the width of the exposure opening 18 in the width direction of the exposure opening 18 (the direction perpendicular to the plane of FIG. 7) matches the width of the line light emitting head of the multi light emitting head 60. A positioning member to be used is also provided in the loading chamber 63.

A spreading control member 84 is fixedly disposed inside the loading chamber 63. Spreading control member 84
The tip 84a is disposed so as to slide between the developing roller pair 72 and the pack discharge port 20 so as to be in sliding contact with the image surface 36 of the film unit 14 coming out of the pack discharge port 20. The spreading control member 84 is provided with the developing roller pair 7.
2 controls the distribution of the developing solution flowing out of the pod 33 and controls the outflow of the developing solution so that the outflow end of the developing solution does not reach one edge 18a of the exposure opening 18 or the focusing position 60a. . Accordingly, it is possible to prevent a problem that the outflow end of the developing solution reaches the focus position 60a of the multi-light emitting head 60 and blocks the print light. Note that the spread control member 84 may be provided on the film pack 10. Reference numerals 86 and 87 shown in FIG. 7 are push-up members provided on the loading lid 43.

Next, the operation of the above embodiment will be briefly described. The film pack 10 can be handled alone since the exposure opening 18 is closed from the inside by the light shielding cover 13. This film pack 10 includes a camera 39
By operating the operation unit 57, the loading lid 43 is opened, and set in the loading chamber 63 inside. When the loading lid 43 is closed after setting, the film pack 10 is positioned by the positioning members 80 and 81.
Is positioned at a predetermined position in the loading chamber 63. Further, the push-up members 86 and 87 are connected to the holes 12a and
The lastly stacked film unit 14 entering from 12b is pushed toward the exposure opening 18 to push the first light shielding cover 13 inside the exposure opening 18.

The system controller 55 includes the loading lid 43
The motor driver 58 is controlled to drive the motor 59 for a certain time in response to the closing of the motor. This drive is transmitted to the developing roller pair 72 and the scraping claw 73. As a result, the light shielding cover 13 is automatically discharged to the outside of the camera 39. When the light-shielding cover 13 is ejected, the first film unit 14 is set in the exposure opening 18 by the push-up members 86 and 87, and the photographing preparation is completed.

At the time of photographing, the operation section 57 is operated to select a photographing mode. After that, the framing is performed by looking through the finder, and the shutter button 41 is operated. Then, the image data of the subject image captured by the CCD image sensor 46 at that time is written to the memory 55a. When photographing a plurality of subject images, the shutter release is repeatedly performed in the photographing mode as in the case of the photographic camera. By repeating the shutter release, a plurality of image data are stored in the memory 55a each time.

When printing the captured image,
The image data to be printed is displayed on the LCD panel 54. This operation is performed by first operating the operation unit 57 to operate the camera 39.
From the shooting mode to the playback mode. In the reproduction mode, the data of the image selected by the operation unit 57 is extracted from the memory 55a, and the data is stored in the image data processing circuit 50, the D / A converter 51, and the amplifier 52.
Is supplied to the LCD driver 53 through the LCD panel 5
4 is displayed.

After the image to be printed is displayed on the LCD panel 54, the print key of the operation unit 57 is operated. Then, the system controller 55 starts a printing operation. In this operation, first, the memory 55a is accessed, and among the image data relating to the image currently displayed on the LCD panel 54, the image data corresponding to the respective colors of R, G, and B are sequentially read, and this is read. The data is transferred to the line memory 65 for each color.

The system controller 55 drives a motor 59 via a motor driver 58. When the motor 59 is driven, the scraping claw 73 moves forward in the feeding direction of the film unit 14 simultaneously with the rotation of the developing motor pair 72. At this time, the scraping claw 76 is caught on the lower end 14 b of the film unit 14, and the film unit 14 is sent out toward the developing roller pair 72 as it is.

When the film unit 14 is sent out,
The roller 67 rotates, and the slit rotating plate 68 rotates together with the roller 67. The slit of the slit rotating plate 68 is detected by the sensor 69. The sensor 69 outputs a pulse signal corresponding to the passage through the slit to the signal processing circuit 70.
Send to The signal processing circuit 70 detects the feed amount of the film unit 14 by measuring the pulse detection interval based on the reference clock. The system controller 55 monitors the feed amount obtained from the signal processing circuit 70 in response to the operation of the print button, and immediately drives the head driver 64 when the feed amount exceeds zero.

The multi-light emitting head 60 has a focus position 60a.
Is attached to the loading chamber 63 so as to fit between the one edge 18a of the exposure opening 18 approaching the developing roller pair 72 and the leading end 38a of the screen area of the film unit 14 approaching the developing roller pair 72. ing. Therefore, the multi light emitting head 60 starts exposure from outside the screen range.

The distance A between the focusing position 60a and the leading end 14a of the film unit 14 in the feeding direction shown in FIG. The multi-light emitting head 60 is arranged so as to be shorter than the interval B along the feeding direction between the multi-light emitting head 60 and the front end 38a. As a result, the image is reliably recorded on the front end 38a of the screen range.

At this time, since the feeding of the developing solution has not yet started in the film unit 14 immediately after the start of feeding, there is a disadvantage that the first exposure is blocked by the developing solution. Never.

The film unit 14 is sent in the sending direction by the scraper 73 while being exposed.
The leading end 14a of the film unit 14 is
Through the developing roller pair 72. Deployment roller pair 7
2 nips the leading end 14a of the film unit 14, and tears the pod 33 in the process of sending the leading end 14a toward the outlet 89 of the camera 39 (see FIG. 7).
After the developing roller pair 72 nips the film unit 14, the forward movement of the scraping claw 73 ends.

The rotation of the unfolding roller pair 72 is continued even after the scraping claw 73 completes its forward movement. Pod part 33
When the developing solution 33a is cleaved, the cover sheet 31
And the photosensitive sheet 32 flows out in a direction opposite to the feeding direction. At this time, the leading end 84a of the spreading control member 84 is slid on the image surface 36 side of the film unit 14. The spreading control member 84 controls the outflow of the developing solution so that the outflow end of the developing solution 33a does not reach the one edge 18a of the exposure opening 18 or the in-focus position. This allows
There is no inconvenience that the developing solution 33a flows out to the focus position of the multi-light emitting head 60 at a time by the force of the splitting and interrupts the print light.

As described above, the film unit 14 is first fed to the developing roller pair 72 by the scraping claw 73, and thereafter, the camera 39 is moved by the developing roller pair 72.
Sent outside. The line light emitting heads 61a to 61c of the multi light emitting head 60 are driven in synchronization with the sending.

The feed speed of the film unit 14 is detected by the speed sensor 66, and based on the feed speed signal, the speed correction calculating section 71 makes the line light emitting heads 61a to 61a-6.
The light emission time control data 1c is obtained according to the speed change, and is sent to the head driver 64. Head driver 64
Drives the line light emitting heads 61a to 61c based on the corrected light emission time control data. As a result, when the speed decreases, the non-exposure time between the emission time corresponding to the exposure for one line and the next emission time is correspondingly increased. As the speed increases, the non-exposure time is correspondingly shortened. Therefore, even if speed fluctuations occur,
The exposure amount and exposure density per line are almost always constant, and the occurrence of density unevenness and color unevenness is suppressed.

When the developing solution 33a is developed, the latent image recorded on the photosensitive layer is transferred to the image receiving layer by the diffusion transfer layer of the photosensitive sheet 32. The image transferred to the image receiving layer is observed as a positive image from the image surface 36 side. Cover sheet 3
Developing processing solution 33a remaining between photosensitive sheet 1 and photosensitive sheet 32
Is captured and cured by the trap section 34.

The film unit 14 sent out by the developing roller pair 72 pushes up the lid 44 from the discharge port 89 of the camera 39 and is discharged to the outside. When several minutes have passed after the ejection, the subject image is fixed on the image receiving layer as a positive image, and the selected image appears on the image surface 36. Hereinafter, in the same manner, the film unit 14
Is sent out from the film pack 10, each color image data of each line is exposed in synchronization with the sending out, and then the developing solution 33 a is developed and discharged out of the camera 39.

In the above-described embodiment, for the film unit 14 set in the exposure opening 18, the front end 38 a of the screen range out of the screen range approaching the developing roller pair 72 and one edge of the exposure opening 18. The multi-light-emitting head 60 is arranged so as to face between the heads 18a. However, the present invention is not limited to this, and one end edge of the exposure opening is arranged at a position closer to the pack discharge opening 20 than the exposure range of the photosensitive sheet 32, and the film unit 14 is set in the exposure opening 18. In this case, it may be arranged so as to face between one end edge of the exposure opening and the screen area of the photosensitive sheet.

In this case, the size of the exposure opening of the film pack 10 may be changed, but it is preferable to provide another exposure opening in consideration of the dual use with an instant camera, the strength of the film pack, the light shielding performance, and the like. It is suitable. For example, FIG.
As shown in FIG.
A second exposure opening 91 is provided separately from the first exposure opening 18 exposing the second exposure range. This exposure opening 91
Has a width substantially equal to that of the first exposure opening 18 and partially exposes the mask sheet 30 outside the effective exposure range of the photosensitive sheet at a position closer to the pack discharge opening 20 than the first exposure opening 18 is. . The second exposure opening 91 is provided at a position facing the pod section 33 of the film unit 14, and is closed by the light shielding cover 13 together with the first exposure opening 18.

As shown in FIG. 9, the light emitting head 60 is set in the film pack 90 in the loading chamber 63, and
Are arranged so as to face the exposure opening 91 of the second
Exposure is given through the exposure opening 91.

The film unit 14 is moved out of the claw 7
3, when the leading end 14a is nipped by the unfolding roller pair 72, as shown in FIG. 10, it is fed by the length L in the feeding direction. At this time, the outside of the screen range approaching the developing roller pair 72 faces the multi-light emitting head 60, and exposure is started from this position.

The distance I between the rotation center of the developing roller pair 72 and the focus position 60a of the exposure head 60 along the feeding direction.
Is shorter than the distance J between the leading end 14a of the film unit 14 and the leading end 38a of the screen area in the feeding direction. Thereby, the front end 3 of the screen range
The image is reliably recorded on 8a.

The detecting means for detecting that the leading end 14a of the film unit 14 has been nipped by the unfolding roller pair 72 can be constituted by the speed sensor 60 described above.
The system controller 55 drives the head driver 64 by detecting that the film unit 14 has been fed by the length L in the feeding direction by the speed sensor 60. The detecting means is not limited to the means for detecting the amount of the film unit 14 fed by the speed sensor 66. For example, the feed length L of the film unit 14 in the feed direction corresponds to the forward movement length of the scraping claw 73. Therefore, by detecting the completion of the forward movement of the scraping claw 73, it is possible to recognize the exposure start timing.

When the film unit 14 has the developing roller pair 72
When the nip is sent out, as shown in FIG.
The pod 33 is torn. When the film is cleaved, the developing solution 33a flows between the cover sheet 31 and the photosensitive sheet 32 in a direction opposite to the discharge direction of the film unit 14. At this time, the spreading control member 84 restricts the outflow range of the developing solution 33a to a region H from the rotation center of the developing roller pair 72 to the outflow end in the direction in which the developing solution 33a flows. The outflow area H is shorter than an interval I between the rotation center of the developing roller pair 72 and the focus position of the exposure head 60 along the feeding direction. Thereby, the developing solution 3
The printing light is not blocked by 3a.

[0064]

【Example】

Since the film unit 14 is fed with the one end of the rear end 14b hooked to the scraping claw 73, the front end 14a on the hooked side of the rear end 14b is first nipped by the developing roller pair 72. Therefore, the image is exposed slightly obliquely to the outer shape of the film unit 14. Therefore, when the vertical length (length in the feeding direction) of the film unit 14 is smaller than the horizontal width (length in the direction orthogonal to the feeding direction), the degree of obliqueness increases. For this reason, it is preferable that the film unit 14 has a shape in which the vertical length is larger than the horizontal width.

The external dimensions (length and width) of the film unit 14 are JIS X 6301 or ISO / IE
It is preferably substantially the same as the ID-1 type card described in C 7810 from the viewpoint of the storage property after the development processing.

In consideration of the above, the dimensions of the film unit 14, such as the outer dimensions, the image surface size, and the margin, are determined by the width of the film unit 14 (the length indicated by D100 in FIG. 12) of 53.5 to 54. The vertical length of the film unit 14 (the length indicated by D101 in FIG. 12) is 85.1-86.1 mm, and the width of the image plane 36 (the length indicated by D20 in FIG. 12) is 44.5-4.5. The horizontal frame (the gap between the edge of the film unit 14 and the edge of the image plane 36 and the length indicated by D23 in FIG. 12) is 3.5 to 4.5 mm.
4.5 mm, frame of pod section 33 (tip 1 of film unit 14)
The gap between 4a and the edge of the image plane 36 is 10 to 18 mm in the length indicated by D22 in FIG. 12, and the area of the screen (the product of the length indicated by D20 and the length indicated by D21 in FIG. 12) is 2541. ３3306 mm ² , the area ratio of the screen to the film unit (the area ratio of the area of the screen divided by the area of the film unit) is 0.5
4 to 0.73.

The second exposure opening 9 described with reference to FIGS.
In consideration of the clearance of the film unit in the film pack and the clearance between the exposure opening and the head, the width of 1 is 45.5 to 51 obtained by adding 1 to 4 mm to the screen width indicated by D20 in FIG. 0.5 mm is preferred. Further, the width of the second exposure opening 91 (the length indicated by D4 in FIG. 13) is preferably 2 to 5 mm in consideration of the size and the irradiation angle of the exposure head.

Before and after the second exposure opening 91 in the film feeding direction, that is, between the second exposure opening 91 and the inner wall of the film pack 10 and the first exposure opening 18 on the film feeding direction side, the film pack Formability, strength,
In consideration of the light-shielding property, it is preferable that the bottom walls 90a and 90b whose lengths indicated by D3 and D5 in FIG. 13 are about 3 mm or more, preferably 4 mm or more are left. As a result, the frame of the pod portion of the film unit (the length of the folded back portion of the mask sheet 30 indicated by D22 in FIG.
(The length indicated by D6) is preferably 10 mm or more, and if it is too large, the screen becomes small and the visibility of the image is poor.

In each of the above embodiments, a film unit having an image surface on the side opposite to the exposure surface and having a smaller size on the image surface than on the exposure surface has been described. However, the present invention is not limited to this. For example, a self-developing film unit may be used in which the exposure surface and the image surface are the same and have the same size. In this case, since the exposure range and the screen range are the same size and this size is the effective exposure range, the leading end of the effective exposure range of the film unit in the feed direction or the pack discharge port side of the effective exposure range. The light emitting head 60 may be arranged so as to face a position close to the light emitting device. Although a multi-light emitting head that emits light of three colors simultaneously is used as the light-emitting head, the present invention is not limited to this, and a light-emitting head that emits light of each color may be used.

[0071]

As described above, in the instant printer of the present invention, since the light emitting head is disposed along one edge of the exposure opening near the developing roller, an image can be appropriately exposed over the entire screen. Further, according to the film pack of another invention, since the second exposure opening is provided separately from the first exposure opening, the light emitting head can be mounted without any limitation, whereby the exposure of the film unit to the screen edge can be performed. Can be performed reliably.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a film pack used in a printer of the present invention.

FIG. 2 is a sectional view of a film unit housed in a film pack.

FIG. 3 is a perspective view illustrating an appearance of a camera with a printer.

FIG. 4 is a block diagram showing an electrical structure of the camera with a printer.

FIG. 5 is an explanatory view showing a part of the inside of a loading chamber for loading a film pack.

FIG. 6 is a perspective view schematically showing a film feeding mechanism, a speed sensor, and a developing roller pair arranged in a loading chamber.

FIG. 7 is an explanatory view schematically showing the entire loading chamber.

FIG. 8 is a perspective view showing another embodiment in which a second exposure opening for a multi-light emitting head is provided in a film pack.

FIG. 9 is an explanatory diagram showing a main part in a state where the film pack described in FIG. 8 is set in a loading chamber.

FIG. 10 is an explanatory diagram showing a state in which exposure is started by a multi-light emitting head.

FIG. 11 is an explanatory view showing a state in which a pod portion is torn by a developing roller pair.

FIG. 12 is an explanatory view of the film unit as viewed from the image surface side.

FIG. 13 is a cross-sectional view of a main part, showing a second exposure opening of the film pack cut away.

[Explanation of symbols]

 10, 90 Film pack 14 Film unit 18, 91 Exposure opening 33 Pod 35 Exposure surface 36 Image surface 39 Electronic still camera with printer 46 CDD image sensor 60 Multi light emitting head 72 Expanding roller pair

Claims (7)

[Claims] 1. A self-developing type film unit having a photosensitive sheet, a cover sheet, and a pod portion containing a developing solution, a plurality of self-developing type film units, and an exposure opening for exposing the photosensitive sheet and an exposed film unit. A loading chamber for loading a film pack provided with a pack discharge port for discharging the film, a claw for feeding the exposed film unit out of the film pack through the pack discharge port, and a pressurizing of the film unit sent from the discharge port. A film feeding mechanism including a pair of developing rollers for crushing the pod portion and developing the developing solution flowing out of the pod portion between the photosensitive sheet and the cover sheet while pressing and sending the film unit, and the developing roller Is located along one edge of the exposure opening, An exposure head that irradiates the photosensitive sheet with a linear print light perpendicular to the scanning direction through the exposure opening, wherein one edge of the exposure opening is closer to the discharge opening than the effective exposure range of the photosensitive sheet, The instant printer, wherein the exposure head is disposed so as to face between the one end edge of the exposure opening and the effective exposure range of the photosensitive sheet when a film pack is loaded in the loading chamber. 2. The developing device according to claim 1, wherein the exposure head is provided at a position farther from the developing roller than an outflow end of the developing solution that has flowed out by crushing the pod portion with the developing roller. An instant printer as described. 3. A pack outlet for accommodating a plurality of self-developing film units having a photosensitive sheet, a cover sheet, and a pod portion containing a developing solution, and for discharging an exposed film unit, and a photosensitive sheet. A first exposure opening for exposing a portion of the photosensitive sheet outside the effective exposure range of the photosensitive sheet at a position having substantially the same width as the first exposure opening and closer to the pack discharge port side than the first exposure opening. (2) a loading chamber for loading a film pack provided with an exposure opening, a claw for feeding the exposed film unit out of the film pack through the pack discharge port, and a pod for pressurizing the film unit fed from the pack discharge port. A film feeding mechanism including a pair of developing rollers for developing the developing solution flowing out of the portion between the photosensitive sheet and the cover sheet, An exposure head that is arranged to face the second exposure opening with the film pack loaded in the loading chamber, and irradiates the photosensitive sheet with linear print light orthogonal to the film unit feeding direction through the second exposure opening; An instant printer, comprising: 4. The distance between the developing roller and the exposure head is shorter than the distance between the leading end of the film unit in the feeding direction and the leading end of the effective exposure range of the photosensitive sheet. Item 13. The instant printer according to Item 3. 5. The instant printer according to claim 3, wherein an interval from the developing roller to a developing solution outflow area is shorter than an interval between the developing roller and the exposure head. 6. A self-developing type film unit having a photosensitive sheet, a cover sheet, and a pod section containing a developing solution, a plurality of self-developing film units, an exposure opening for exposing the photosensitive sheet, and an exposed film unit. A first exposure opening for exposing an effective exposure range of the photosensitive sheet, and a film having a width substantially equal to the first exposure opening, wherein A second exposure opening for partially exposing the outside of the effective exposure range of the photosensitive sheet at a position close to the discharge opening; 7. The film pack according to claim 6, wherein the first and second exposure openings are shielded from the inside by a light-shielding cover housed on the front surface of the plurality of film units.