JP2702508B2 - Shading device for instant photographic equipment - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a light shielding device of a peel apartment type instant photographic device.

2. Description of the Related Art Conventionally, in a peel apartment type instant photographic apparatus, a negative sheet is exposed to light and a latent image is formed through an optical system, and the negative sheet and the positive sheet are stacked with a developer interposed therebetween. The image is transferred and fixed on the upper side.

Here, as shown in FIG. 7, on the side of the main body case 1 in the peel-apart type instant photographic apparatus, a negative sheet 2 in a state of being overlapped with a developer is interposed.
And a discharge port 4 for discharging the positive sheet 3. An upper end is fixed to a side surface of the main body case 1 and a lower end is a free end, and
A flexible light-shielding member 5 is attached so as to open and close freely. In some cases, a non-flexible light-shielding member coupled to a spring may be attached instead of the flexible light-shielding member 5.

Problems to be Solved by the Invention When the negative sheet 2 and the positive sheet 3 are not discharged, the discharge port 4 is closed by the flexible light-blocking member 5, and the light is reliably blocked. However, negative sheet 2
When the lower end of the flexible light-shielding member 5 is pushed out at the time of discharging the sheet and the positive sheet 3, a substantially triangular gap 6 is formed at both ends of the flexible light-shielding member 5. There is a disadvantage that the light enters the main body case 1 to expose the negative sheet 2.

Means for Solving the Problems In a peel-apart type instant photographic apparatus, a concave portion having a predetermined depth is formed on a side surface of a main body case for accommodating a transport unit, and a negative sheet and a positive sheet are discharged in an overlapping state. An outlet is formed in the inner surface of the recess, the upper end is connected to the main body case, and the lower end split is a free end, so that the outlet can be deformed within the depth of the recess so as to cover the discharge opening freely. A flexible light shielding member is provided,
The flexible light-blocking member was disposed in the recess with both side edges of the flexible light-blocking member close to the side surface of the recess.

Further, an annular projection projecting outward was formed on the peripheral edge of the outlet, and the tip of the projection was brought into contact with the inner surface of the flexible light-shielding member.

When the negative sheet and the positive sheet are discharged from the discharge port in a state where they overlap with each other, the lower end portion of the flexible light-shielding member is pushed outward, thereby forming a substantially triangular shape on both sides of the flexible light-shielding member. However, both sides of the flexible light-shielding member are close to the side surface of the concave portion, and the degree of deformation of the flexible light-shielding member is within the range of the depth of the concave portion. The substantially triangular gap on both sides of the flexible light-shielding member is in a state of being covered by the side surface of the concave portion.
Light entering into the main body case from the gap portion through the discharge port is greatly reduced, and it is not necessary to provide a special space in the main body case for light shielding.

In addition, by forming an annular protrusion on the periphery of the discharge port, in a state where the negative sheet and the positive sheet are not discharged, the front end of the protrusion and the inner side surface of the light shielding member are in line contact with each other, and the negative sheet The light-shielding property in a state where the sheet and the positive sheet are not discharged is improved.

Embodiment An embodiment of the invention described in claim 1 will be described with reference to FIGS. 1 to 4. The same parts as those described in FIG. 7 are denoted by the same reference numerals, and description thereof will be omitted. First, a peel apartment type instant photographic apparatus comprises an optical unit 7 for forming an image at a predetermined exposure position while irradiating a document surface with illumination light, transporting the negative sheet 2 to the exposure position and exposing the negative sheet. The transfer unit 8 is configured to position and overlap the positive sheet 3 with the positive sheet 3 and to interpose a developer therebetween to transfer and form an image on the positive sheet 3. The transport unit 8 is housed in the main body case 1.

Next, the transport unit 8 will be described. Light-shielding container 9 for accommodating negative sheet 2 wound in a roll shape
The outlet of the container 9 is provided with a draw roller 10 for drawing the negative sheet 2 and a cutter 11 for cutting the drawn negative sheet 2 to a predetermined length. A transport path 1 for transporting the negative sheet 2 cut to a predetermined length toward the exposure drum 12
3, and a transport path 15 for transporting the negative sheet 2 having been subjected to exposure and line image formation at the exposure position on the outer peripheral portion of the exposure drum 12 toward the developing roller 14. A positive sheet supply unit 16 for manually feeding the positive sheets 3 one by one below the conveyance path 15, and a conveyance path 17 for conveying the supplied positive sheet 3 toward the developing roller 14.
Is provided. A roller 18 and a sensor 19 for transport are provided on the transport path 17, and a sensor 20 is also provided on the transport path 15.

Next, a concave portion 21 which is depressed toward the inside of the main body case 1 is formed in a portion of the side surface of the main body case 1 facing the developing roller 14. Deep part 22 of the recess 21
Is formed with a discharge port 23 from which the negative sheet 2 and the positive sheet 3 are discharged in an overlapping state. In the recess 21, a flexible light-shielding member 24, which is a light-shielding member whose upper end is fixed and whose lower end is a free end, covers the discharge port 23 so as to be openable and closable. The both ends of the flexible light-shielding member 24 are close to the side surface 25 of the concave portion 21.

In such a configuration, first, the positive sheet supply unit 16
When the positive sheet 3 is supplied from the printer 1, the positive sheet 3 is conveyed through the conveying path 17 by the rotation of the roller 18.
The rotation of the roller 18 is stopped when the leading end of the sheet abuts on the nip of the developing roller 14. At the leading end of the positive sheet 3 in the transport direction, a pot 26 containing the developer as shown in FIG. Affixed. After the leading end of the positive sheet 3 hits the nip of the developing roller 14 and the conveyance is stopped,
The negative sheet 2 is pulled out of the container 9 and cut by the cutter 11 into a predetermined length. The negative sheet 2 cut to a predetermined length is transported along a transport path 13 and
Exposure and formation of a latent image are performed at the exposure position on the outer peripheral portion. Further, the negative sheet 2 is transported along the transport path 15 to a position where the leading end of the negative sheet 2 collides with the nip of the developing roller 14. Negative sheet 2
And the positive sheet 3 are aligned, the developing roller 14 starts rotating,
The sheets 2 and 3 bite between the developing rollers 14, and the pressure breaks the pod 26 and the developer inside flows out. The developer flowing out of the pod 26 is uniformly spread between the sheets 2 and 3, and the latent image formed on the negative sheet 2 is transferred and fixed onto the positive sheet 3 by the developer.

The negative sheet 2 and the positive sheet 3 overlapped with the developer interposed therebetween are discharged from the discharge port 23 to the outside of the main body case 1 after passing through the developing roller 14. At the time of this discharge, when the leading ends of the sheets 2 and 3 abut against the flexible light shielding member 24, the lower ends of the flexible light shielding members 24 are pushed outward, and both ends of the flexible light shielding members 24 A substantially triangular gap 27 is created. However, on both sides of the gap 27, the side face 25 of the concave portion 21 is positioned close to the gap 27.
Light penetration into the interior is greatly reduced. Because of this, the outlet
Negative sheet 2 due to intrusion of light into body case 1 from 23
Is prevented from being exposed to light. In a state where the sheets 2 and 3 are not discharged, the flexible light-shielding member 24 is in contact with the peripheral edge of the discharge port 23, and light is prevented from entering through the discharge port 23.

Next, a first embodiment of the invention described in claim 2 will be described with reference to FIG. The same parts as those described in FIGS. 1 to 4 are denoted by the same reference numerals, and description thereof will be omitted (the same applies hereinafter). In the present embodiment, a discharge port 23 is formed in the inner surface 22 of the concave portion 21 of the main body case 1, and an annular protrusion 28 protruding outward is formed on a peripheral edge of the discharge port 23, and thus the flexible case is formed. The inner light-shielding member 24 has the inner side surface in contact with the tip of the projection 28. Accordingly, the flexible light-shielding member 24 and the projection 28 come into line contact with each other, and the light-shielding property in a state where the sheets 2 and 3 are not discharged is improved.

Next, a second embodiment of the invention described in claim 2 will be described with reference to FIG. In the present embodiment, an annular protrusion 29 protruding outward at a peripheral portion of the discharge port 23 is provided.
In addition to the above, the protrusion 29 is inclined so that the skirt expands outward. Therefore,
The state of contact between the inner side surface of the flexible light-shielding member 24 and the tip of the protrusion 29 is strengthened, and the light-shielding property in a state where the sheets 2 and 3 are not discharged is further improved.

According to the first aspect of the present invention, as described above, in a peel apartment type instant photographic apparatus, a concave portion having a predetermined depth is formed on a side surface of a main body case for storing a transport unit.
A discharge port for discharging the negative sheet and the positive sheet in an overlapped state is formed in a deep portion of the concave portion, and an upper end side is connected to the main body case and a lower end side is a free end so as to be within the depth of the concave portion. A flexible light-shielding member is provided to cover the discharge port so as to be openable and closable, and both sides of the flexible light-shielding member are brought close to side surfaces of the concave portion so that the flexible light-shielding member is located in the concave portion. When the negative sheet and the positive sheet are discharged from the discharge port in a state where the negative sheet and the positive sheet overlap with each other, the lower end of the flexible light-shielding member is pushed outward, and thereby, both sides of the flexible light-shielding member are pushed out. Has a substantially triangular gap, but both side edges of the flexible light shielding member are close to the side surface of the concave portion, and the degree of deformation of the flexible light shielding member is within the depth range of the concave portion. Because there is a substantially triangular shape on both sides of the flexible light shielding member Is in a state covered by the side surface of the concave portion, whereby the penetration of light from the gap portion into the main body case through the discharge port is greatly reduced, and a special There is an effect that there is no need to provide a space.

According to the second aspect of the present invention, an annular projection projecting outward is formed on the periphery of the discharge port, and the tip of the projection is brought into contact with the inner surface of the flexible light shielding member. So
In a state where the negative sheet and the positive sheet are not discharged, the tip of the protrusion and the inner surface of the light shielding member are in line contact with each other, so that the light shielding property in a state where the negative sheet and the positive sheet are not discharged is improved. It has the effect of.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram of a peel-apart type instant photographic apparatus showing one embodiment of the invention described in claim 1, FIG. 2 is a vertical sectional side view showing an enlarged portion of a discharge port, FIG. FIG. 3 is an enlarged front view showing the discharge port, and FIG.
FIG. 5 is a perspective view showing a positive sheet, FIG. 5 is a vertical sectional side view showing a discharge port in the first embodiment of the invention described in claim 2, and FIG. 6 is a claim. Item 2 is a vertical sectional side view showing a discharge port portion in the second embodiment of the invention described in Item 2, and FIG. 7 is a vertical sectional side view showing a discharge port portion in a conventional example. 1 ... Main body case, 2 ... Negative sheet, 3 ... Positive sheet, 8 ... Conveying unit, 21 ... Concave part, 22 ... Back part,
23 ... outlet, 24 ... light blocking member, 28 ... projection, 29 ...
protrusion

Claims (2)

(57) [Claims] In a peel apartment type instant photographic apparatus, a concave portion having a predetermined depth is formed on a side surface of a main body case for accommodating a transport unit, and an outlet for discharging a negative sheet and a positive sheet in an overlapping state is formed in the concave portion. A flexible light-shielding member formed on the back surface portion, the upper end side being connected to the main body case and the lower end side being a free end, deforming within the depth of the concave portion and covering the discharge port so as to be openable and closable. A light-shielding device for an instant photographic device, wherein the flexible light-shielding member is disposed in the concave portion such that both side edges of the flexible light-shielding member are close to side surfaces of the concave portion. 2. A method according to claim 1, wherein an annular projection projecting outward is formed on a peripheral portion of the discharge port, and an end of the projection is brought into contact with an inner surface of the flexible light-shielding member. Claim 1
The light-shielding device of the instant photographic device according to the above.