JPS63306147A - Wind-up spool - Google Patents

Abstract

PURPOSE:To facilitate the removal of a wound-up film by providing spool diameter adjusting shafts each having nearly tapered outer peripheral face which are fitted in both end parts of a spool shaft in which plural core members are arranged nearly in an annular form and a means of moving at least one of the adjusting shaft in its axial direction. CONSTITUTION:At the time of taking out a photosensitive film after the photosensitive film is wound up on a wind-up spool 18, first, a closing door 16 is moved to an opening position. Thereby, the opening part 15b of a film take-out part 15 is opened and since the spool covers 55, 56 are opened, a spool shaft 42 is opened from the covering of the covers 55, 56. At the same time, a spool diameter adjusting shaft 39 of the left side is moved to a diameter reducing position to make the diameter of the spool shaft 2 smaller than the diameter theretofore on which the photosensitive film was being wound up. thereby, since a gap is formed between the used-up photosensitive film which is wound up nearly into a roll form by the spool shaft 42 and the spool shaft 42, the wound up photosensitive film can be simply taken out of a film take-out part 15 to an outer case 7.

Description

[Detailed description of the invention] The take-up spool of the present invention will be explained according to the following items.

A. Industrial field of application B1 Overview of the invention C8 Background art D9 Problems to be solved by the invention E0 Means for solving the problems F. Example a Film cassette [Fig. 2, Fig. 3 Cob , Overview of the printer [Figures 2 and 3 b-1. Configuration-2, Operation C, Film winding section [Figures 1 to 6] c-1 Take-up spool [Figures 1 to 6] c-1-a, Rotating shaft [Figures 1 to 6] 2, FIGS. 4 to 6] c-1-b, spool diameter adjustment shaft [FIGS. 1 to 6] c-1-c, spool shaft [FIGS. 1 to 6] c-1 -d, Opening/closing ff1l [Fig. 1, Fig. 3, Fig. 5] c-1-e, Expansion/contraction of the diameter of the spool shaft [Fig. 1 (A), Fig. 1 (B)] c-2, Spool Cover [Figures 1 to 5] c-2-a, Structure c-2-b, Support to chassis - C-3, Winding of photosensitive film [Figure 2] c-3-a, Loading c -3-b, winding of photosensitive film c-4, spool cover opening/closing mechanism [Figures 1 to 5] C-4-a, configuration c-4-b-! I] Operation c-50 Removal of the film taken up on the take-up spool [Fig. 1 (B), Fig. 4] G1 Effects of the invention (A, industrial application field) The present invention is a novel take-up spool. Regarding. More specifically, it relates to a take-up spool for winding long films, paper, etc., and in particular, to a take-up spool that requires removing the wound film after winding of the film, etc. It is an object of the present invention to provide a novel take-up spool which allows a wound film to be easily removed without having to take it up through a cylindrical member for removal or the like.

(B. Summary of the Invention) The take-up spool of the present invention winds the film in a take-up spool that requires winding a long film and removing the wound film after winding of the film is completed. By configuring the diameter of the part so that it can be expanded or contracted, it is possible to unwind the wound film without having to unwind the film or unwinding the film through an external cylindrical member. It is designed so that it can be easily removed from the state where the winding is completed.

(C. Background Art) For example, in equipment that prints images or performs other prescribed operations using long printing films, ink ribbons, paper, etc. (hereinafter referred to as "films, etc."), Generally, the film or the like is wound around a predetermined spool (hereinafter referred to as the "supply spool") in a substantially roll shape and is mounted on a predetermined film mounting section, and is then pulled out from the supply spool. A take-up spool is provided for winding up the film, etc., and the film, etc. is moved by rotating the take-up spool in the film winding direction with the leading end of the film, etc. wound around the take-up spool. Therefore, a predetermined operation is performed with or on the film or the like at a position between the supply spool and the take-up spool.

By the way, many of these types of films are discarded after being used for a specific task, that is, they are disposable. Therefore, in devices that use such films, etc.,
After the use of the film, etc. is completed, the supply side spool is rotated in the film winding direction to rewind the film, etc. that has been wound onto the take-up spool onto the supply side spool, or a disposable spool is used as the take-up spool. After winding of a film or the like is completed using a device, the take-up spool is removed from the device together with the film or the like.

(D. Problem to be solved by the invention) However, when the film, etc. that has been wound up on the take-up spool is rewound onto the supply spool in order to take out the used film, etc. from the device, Rewinding takes a considerable amount of time and requires a mechanism to rotate the supply spool in the film winding direction and a clutch mechanism to disconnect the take-up spool from its drive means when rewinding the film. There's a problem.

Furthermore, when a disposable take-up spool is used, the take-up spool is literally disposable, which is extremely uneconomical, and there is a problem in that it takes time and effort to attach and detach the take-up spool to and from the device.

(E. Means for Solving the Problems) Therefore, in order to solve the above-mentioned problems, the take-up spool of the present invention is designed to take up a long film and to take up the film after the winding of the film is completed. In a take-up spool that requires removal of the film, the part where the film is wound, that is, the spool shaft, has a structure in which a plurality of core members are arranged in a substantially annular shape in a cross section perpendicular to the axial direction to form a substantially picture shape. a spool diameter adjusting shaft that is fitted into both ends of the spool shaft and has a substantially tapered outer peripheral surface; a resilient means that urges the plurality of core members toward the axial center of the spool shaft; and a moving means for moving at least one of the two spool diameter adjusting shafts in the axial direction.

Therefore, according to the take-up spool of the present invention, when the moving means moves the spool diameter adjusting shaft in the direction in which the distance between the two spool diameter adjusting shafts increases, the plurality of core members are moved by the resilient means. Since they are both displaced toward the axial center of the spool shaft, the diameter of the spool shaft becomes smaller, and as a result, an appropriate gap is created between the spool shaft and the film being wound around the spool shaft. can be easily removed from the spool shaft while winding on the spool shaft is complete.

(F. Embodiment) Details of the take-up spool of the present invention will be explained below according to the embodiment shown in the accompanying drawings.

In the embodiment shown in the drawings, the present invention is applied to a take-up spool for winding up the photosensitive film of a printer that prints images using the photosensitive film.

First, an example of a film cassette and an overview of a printer will be described, and then details of a film winding section having a winding spool will be described.

(a, film cassette) [FIGS. 2 and 3, 1 is a film cassette, and the film cassette 1 includes a substantially circular cassette case 2 and a long photosensitive film 3 wound in a substantially roll shape. The spool 5 has a light shielding flange 4.4' fixed to both ends in the axial direction, the light shielding flange 4.4' having a larger diameter than the outer diameter of the cassette case 2. The photosensitive film 3 is rotatably supported by the cassette case 2 with the openings at both ends closed, and the tip of the photosensitive film 3 wound around the spool 5 is formed on the outer periphery of the cassette case 2. The film is led out of the cassette case 2 through the film outlet 2a.

The photosensitive film 3 is formed by coating a photosensitive dye precursor on one side of a suitable film base material. For example, when the dye precursor is irradiated with ultraviolet light of a predetermined wavelength, the molecular bond structure changes and hardens. It is formed by enclosing a dye precursor, that is, a substance that forms a predetermined color by combining with a developing substance provided on the color developing paper, which will be described later.

(b. Overview of printer) [Figures 2 and 3] 6 is a printer.

(b-1, configuration) 7 is an outer casing of the printer 6, and the outer casing 7 is arranged in the front and back direction (
The direction to the right in FIG. 3 is defined as the front side, and the direction towards the left is defined as the rear side. Further, in the figure, the downward direction is the left side, and the upward direction is the right side. In the following description, when directions are indicated, this direction will be used.

), and most of the front surface near the upper end is a cassette loading/unloading port 8, and the cassette loading/unloading port 8 is provided with a front door 9 for opening and closing it.

Reference numeral 10 denotes a cassette mounting section, and the cassette mounting section 10 is located inside the outer casing 7 in a portion facing the upper part of the front door 9, and is connected to spool support walls 11 and 11 spaced apart from each other in the left and right direction. ' and the rear end of the spool support wall 11, 11', a case holding plate 12, and a cassette attachment/detachment plate 13-- rotatably supported by the left spool support wall 11. 13 and the right-hand spool support wall 11' are provided with spool support protrusions 14, 14' on each opposing surface.

The film cassette 1 has its film outlet 2a facing downward, and the spool support protrusion 14.14' is rotatable in a recess formed in the center of the light-shielding flange 4.4' of the spool 5. The cassette case 2 is fitted into the cassette mounting portion 10 by being held by the case holding plate 12.

Reference numeral 15 denotes a film take-out part, and the film take-out part 15 has an opening 15a at approximately the center of a portion of the left side wall 7a of the outer casing 7, which is about a quarter of the rear end, and extends slightly inward from the opening 15a. It has a certain depth, and the opening 1 on the back side
An opening/closing door 16 is provided at 5b.

Reference numeral 17 denotes a film winding section having a winding spool 18, and most of the film winding section 17 is located on the right side of the opening/closing door 16.

Reference numerals 19 and 19' refer to a pair of pressure rollers located approximately in the center of the outer casing 7 in the front-rear direction;
A film guide plate 21.21' is located close to the entrance side of the part where the film guide plate 9' contacts, and 21.21' is a pair of film feed rollers located close to the right end of the film guide plate 22.22.
' and 23 and 23' are film guides arranged between the exit side of the part where the pressure rollers 19 and 19' contact and the take-up spool 18, The photosensitive film 3 pulled out from the film is passed between film feed rollers 21 and 21', then extends along the upper surface of the film guide plate 20, and is passed between pressure rollers 19 and 19'. , between the opposing film guides 22, 22' and 23, 23' 5
j124.24' (hereinafter referred to as the "film running path").

), after which a path is passed to be wound up on the take-up spool 18.

Reference numeral 25 denotes a light source (hereinafter referred to as rFOTJ (fiber optical duplex)) consisting of a bundle of many optical fibers for exposing the exposure surface of the photosensitive film 3 in a pattern according to a predetermined image signal. The approximately middle portion of the film 3 between the cassette loading section 10 and the film feed rollers 21 and 21' is the FO.
It is in contact with the light emitting surface 25a of T25.

Reference numeral 26 denotes a color developer paper 27 which is printing paper, that is, a color developer paper 27 coated with a developing substance that combines with the dye precursor provided on the photosensitive film 3 to form a predetermined color.
27, . . . are paper feed trays in which a large number of color developing papers 27, 27, . . . It is supplied so as to be inserted into the inlet side of the contact part of .19'.

Reference numeral 29 denotes a paper discharge tray for receiving the printed color developer paper 27, 27, .

(b-2, operation) Therefore, the photosensitive film 3
A certain area is formed on the print film by traveling a predetermined distance while being exposed by being irradiated with light according to a predetermined image signal emitted from the FOT 25 at the position in contact with a, and from that state , developer paper 2
7 is supplied between the pressure rollers 19 and 19', and the supplied developer paper 27 and the portion of the photosensitive film 3 that is to be the printing film are superimposed, and the pressure roller 19.19 As a result, the unexposed capsules of the dye precursors in the photosensitive film 3 are destroyed, the dye precursors are encapsulated in the capsules, and the dye precursors are transferred to the developer paper 27. A predetermined image is printed on the color developer paper 27, and the color developer paper 27 that has been subjected to the printing force is sent out to the paper discharge tray 29 by the paper discharge belt 30.

(c, Film Winding Unit) [Figures 1 to 6] The film winding unit 17 consists of the opening/closing door 16, a spool cover covering the spool shaft, and a mechanism for opening/closing the spool cover.

(c-1, Take-up spool) [Figures 1 to 6] The take-up spool 18 has a rotating shaft rotatably supported by the outer casing 7 and two spool diameter adjusting shafts supported by the rotating shaft. It consists of a spool shaft whose both ends are individually supported by the spool diameter adjustment shaft, and the opening/closing door 16, etc., which engages one of the two spool diameter adjustment shafts.

(c-1-a, rotating shaft) [Figs. 1, 2, 4 to 6] 31 is a rotating shaft forming the axial center of the take-up spool 18;
The rotation shaft 31 has a length slightly longer than the distance between the right side wall 7b of the outer casing 7 and the opening 15b formed on the back surface of the film take-out section 15, and extends slightly from the center to the left side. A spring receiving portion 32 is formed at a closer position.

33 is a bearing housing formed in a substantially cylindrical shape, and the right end of the bearing housing 33 is connected to the right side wall 7b of the outer casing 7.
The rotating shaft 31 is fixed at a position substantially facing the center of the film take-out section 15, and bearings 34, 34' are provided at both ends thereof. By being rotatably supported by ', it is located in a position extending in the left-right direction from the central part in the height direction of the part near the rear end inside the outer casing 7 toward the stacking direction.

A pulley 35 is provided on a portion of the rotating shaft 31 that protrudes from the bearing housing 33 to the right side.
1 is configured to rotate in the film winding direction, that is, in the clockwise direction in FIG. 2, at a predetermined timing by transmitting the rotational force of a motor 36 to the pulley 35 through a drive mechanism 37. .

Further, the left end portion 31a of the rotating shaft 31 is formed to have a smaller diameter than other portions, and a stopper 38 is fixed to this portion.

(c-1-b, Spool diameter adjustment shaft) [Figures 1 to 6 39 and 40 are spool diameter adjustment shafts for expanding and contracting the diameter of the spool shaft, which will be described later.

Most of the outer peripheral surface 39a of the left spool diameter adjustment shaft 39, excluding the left end, is formed into a tapered surface having a substantially truncated conical shape whose diameter gradually decreases toward the right end, and the left end of the outer peripheral surface 39a, That is, an abutment flange 39b is provided protruding from the end with a larger diameter, and an insertion hole 39c is formed at the axial center of the abutment flange 39b.

The thickest diameter part of the outer circumferential surface 39a is approximately three times as thick as the rotating shaft 31, and the smallest diameter part is approximately half the diameter of the largest diameter part. It has a thickness of .

The left spool diameter adjustment shaft 39 is connected to its insertion hole 3.
The left end portion of the rotating shaft 31 is slidably inserted into the rotating shaft 9c, so that it is supported by the rotating shaft 31 so as to be movable in the axial direction, and the right end surface and the rotating shaft 3
Due to the elastic force of the compression coil spring 41 provided between the spring receiving portion 32 of No. 1, the coil spring 41 is always biased with a force to the left, and when it is not pressed toward the right. , as shown in FIG. 1(B), is held at a position where its left end surface abuts against the stopper 38 (hereinafter referred to as the "reduced diameter position").

□ The spool diameter adjustment shaft 39 is prevented from rotating in the periphery of the rotation shaft 31 by a key (not shown), and therefore the spool diameter adjustment shaft 39 is integrally connected to the rotation shaft 31. It will rotate.

The right spool diameter adjusting shaft 4o includes a disk-shaped regulating flange 40a, a boss portion 40b protruding from the center of the regulating flange 40a to the right, and an adjusting portion 40 protruding to the left.
c are integrally formed, and a hole 4 is formed in the axial center of the
0d, and the adjustment portion 40c has a length approximately half the length of the left spool diameter adjustment shaft 39, and its outer peripheral surface 40e has a generally truncated conical shape whose diameter gradually decreases toward the left. The portion of the outer peripheral surface 40e with the largest diameter has approximately the same thickness as the portion of the left spool diameter adjustment shaft outer peripheral surface 39a with the largest diameter, and the adjustment portion The thickness of the substantially middle portion of the spool 40c in the axial direction is approximately the same as the thickness of the portion of the outer peripheral surface 39a of the left spool diameter adjusting shaft 39 that is slightly to the right of the abutment flange 39b.

The right spool diameter adjusting shaft 40 is supported by the rotating shaft 31 by inserting a portion of the rotating shaft 31 near the left end of the bearing housing 33 into the hole 40d, and is also supported by the rotating shaft 31 by a key (not shown). 31 is prevented from rotating.

Therefore, the right spool diameter adjusting shaft 40 also rotates integrally with the rotating shaft 31.

Thus, the rotating shaft 31 has two spool diameter adjusting shafts 39.
40 are provided spaced apart from each other in the axial direction, and the distance between these two spool diameter adjustment shafts 39 and 40 changes as the left spool diameter adjustment shaft 39 moves.

Note that the contact flange 39 of the left spool diameter adjustment shaft 39 when the spool diameter adjustment shaft 39 is at the diameter reduction position
b and the regulation flange 40a of the right spool diameter adjustment shaft 40
The distance between the photosensitive film 3 and the photosensitive film 3 is slightly longer than the width of the photosensitive film 3.

(c-1-c, spool shaft) [FIGS. 1 to 6 42 is the spool shaft of the take-up spool, that is, the shaft for winding the photosensitive film 3, and the spool shaft 42 is approximately It consists of three core members arranged in a ring.

That is, 43, 43, 43 are core members, and these core members 43, 43, 43 have a length approximately equal to the width of the photosensitive film 3, and a cross-sectional shape perpendicular to the longitudinal direction thereof is a central angle. It is formed in the shape of a relatively thick gutter with an arc shape of approximately 120°, and both ends reach both edges in the circumferential direction at all three positions near the middle and both ends in the longitudinal direction of the outer peripheral surface. Relatively deep grooves 44, 44, . . . are formed.

These three core members 43, 43, 43 are arranged in grooves 44, 44, . Resilient members 45, 45, 45 each having a substantially rubber band shape are fitted into three consecutively positioned resilient members 45, 45, 45, respectively, so that they are combined to form one cylindrical body,
As a result, a spool shaft 42 having a substantially cylindrical shape is formed.

Further, the spool shaft 42 configured in this manner has both ends thereof in the axial direction fitted onto the tapered portion of the left spool diameter adjustment shaft 39 and the adjustment portion 40c of the right spool diameter adjustment shaft 40, respectively. It is supported by these two spool diameter adjustment shafts 39 and 40.

When the left spool diameter adjusting shaft 39 is at the diameter reducing position, the left end of the spool shaft 42 comes into contact with a portion of the outer peripheral surface 39a of the left spool diameter adjusting shaft 39 that is slightly to the right of the contact flange 39b. , the opening edge on the right side is in contact with the intermediate part in the axial direction of the outer circumferential surface 40e of the adjustment part 40c of the right spool diameter adjustment shaft 40, and in this state, the adjacent core members 43, 43, 43 are in contact with each other. The side end surfaces of each are substantially in contact with each other. Therefore, the spool shaft 4
The diameter of 2 is in this state, that is, the left spool diameter adjustment shaft 39
is the smallest when the diameter is at the reduced diameter position.

In addition, the core member 43.43.43 is the spool diameter adjustment shaft 39.
．． The spool shaft 42 is fitted onto the outside so that it can move relatively freely in the axial direction, but is prevented from rotating in the axial direction by a rotation means (not shown). The rotating shaft 31 and the spool diameter adjusting shaft 3
It will rotate integrally with 9.40.

(c-1-d, opening/closing door) [Figures 1, 3, and 5] The main part 16a of the opening/closing door 16 is connected to the film removal section 15.
It has a rectangular plate shape having approximately the same size as , and projecting pieces 16b and 16c are provided to project approximately horizontally toward the right side from both upper and lower edges, and the rear ends of the projecting pieces 16b and 16c are It is made wider than the rest.

A support member 46 having a substantially cylindrical shape that is short in the axial direction is rotatably supported at approximately the center of the right side surface of the main portion 16a, and the right spool diameter adjusting shaft 40 is connected to the tip of the support member 46. A regulating flange 47 having substantially the same size as the regulating flange 40a is integrally formed.

The diameter of the hole 46a of the support member 46 is such that the left end portion 39d of the left spool diameter adjusting shaft 39 fits therein almost exactly.

48 is located above the take-up spool 18 and is located above the outer casing 7.
Both left and right walls 7a, ? The rack is a chassis passed between b, 4
9 is a film ejection portion 15 on the inner surface of the rear wall 7C of the outer casing.
This is a door support piece that protrudes forward from a position slightly to the right from the bottom, and a door support shaft 50 is supported between the door support piece 49 and the chassis 48.

The opening/closing door 16 is rotatably supported by the door support shaft 50 at the right-hand side of the wide rear end of the projecting piece 16b116c, and as shown in FIG. A position located so as to close the opening 15b of the extraction section 15 (hereinafter referred to as the "closed position") and FIG. 1(B)
As shown in FIG. 2, the opening 15b of the film take-out section 15 is moved between a position where the opening 15b is completely opened (hereinafter referred to as the "open position").

The left end 31a of the rotary shaft 31 is mostly located within the hole 46a of the support member 46 provided in the door 16 when the door 16 is in the closed position.

51 is the opening/closing door 16 among the protrusions 18c on the lower side of the opening/closing door 16.
is located at the left front of the door support shaft 50 when the opening/closing door 16 is in the closed position, and protrudes downward from a portion located at the left rear of the door support shaft 50 when the opening/closing door 16 is in the open position. 52 is the door support piece 49
This is a spring-loaded pin that protrudes downward from the right side of the door support shaft 50, and a tension spring 53 is installed between these spring-loaded pins 51 and 52.

The tensile force of the tension spring 52 is greater than the repulsive force of the coil spring 41 that is fitted around the rotating shaft 31, that is, the coil spring 41 that constantly biases the left spool diameter adjustment shaft 39 toward the left. It's made stronger.

Therefore, the spring pin 51 of the opening/closing door 16 is connected to the door support shaft 50.
When it comes to the front side of the straight line passing through the spring-hung pin 52 of the door support piece 49, the turning force in the counterclockwise direction in Fig. 1 is applied to the opening/closing 5% 16. Then, the opening/closing door 16 is moved to the closed position.1. and,
When the spring-loaded pin 51 of the opening/closing door 16 is on the rear side of the straight line, the opening/closing door 16 is biased with rotational force in the clockwise direction in FIG. In this state, the opening/closing door 16 is moved to the open position and held at that position.

In addition, 54 is a handle of the opening/closing door 16, which is used when opening/closing the opening/closing door 16.

(c-1-e, expansion and contraction of the diameter of the spool shaft) [Figure 1 (A)
, FIG. 1(B)] Therefore, when the opening/closing door 16 is moved to the closed position from the state shown in FIG. Hole 46a of support member 46
The left end portion of the spool diameter adjusting shaft 39, that is, the portion 39 on the left side from the abutment flange 39b.
d fits perfectly into the tip of the hole 46a, and the spool diameter adjusting shaft 39 is supported by the opening/closing door 16.

At the same time, the regulating flange 47 of the support member 46 comes into contact with the left end surface of the contact flange 39b of the spool diameter adjusting shaft 39 and presses the spool diameter adjusting shaft 39 toward the right side. This causes it to move to the right against the elastic force of the spring 41. Then, the spool.

Tapered surface 39a of diameter adjustment shaft 39 and abutting flange 39
b comes into contact with the left end surface of the spool shaft 42 and the spool shaft 4
2 toward the right until its right end contacts or substantially contacts the regulating flange 40a of the right spool diameter adjusting shaft 40.

Therefore, the spool shaft 42 is moved slightly to the right and the spool shaft 42 is moved slightly to the right.
The two spool diameter adjustment shafts 39 and 40 are moved in a direction to relatively shorten the distance between them, and the left end of the spool shaft is fitted into the thickest diameter part of the tapered surface 39a of the left spool diameter adjustment shaft 39. Moreover, the right end fits into the thickest diameter part of the tapered surface 40e of the right spool diameter adjusting shaft 40.

Therefore, both ends of the three core members 43, 43, 43 constituting the spool shaft 42 are connected to the spool diameter adjusting shaft 39.4.
0 tapered surfaces 39a and 40e, the spool shaft 42
will be forced to move in a direction away from the axis of the
This increases the diameter of the spool shaft 42.

The position of the left spool diameter adjustment shaft 39 in this state is referred to as the "diameter expansion position."

Also, when the opening/closing 5'1116 is moved to the open position side,
Since the rightward pressure on the left spool diameter adjustment shaft 39 by the opening/closing door 16 is released, the spool diameter adjustment shaft 39 is moved to the reduced diameter position by the pressing force of the coil spring 41.

Therefore, the distance between the two spool diameter adjustment shafts 39 and 40 increases, and the largest diameter portion of the tapered peripheral surface 39a of the left spool diameter adjustment shaft 39 escapes to the left, so that the core members 43, 43. 43 has both left and right ends connected to the spool diameter adjusting shaft 39.43 by the resilient force of the resilient members 45, 45, and 45 which urge these toward the axial center of the spool shaft 42.
The spool shaft 4 is moved across the tapered surfaces 39a and 40e of
It will move towards the axis of 2, thereby,
The diameter of the spool shaft 42 will be reduced.

(c-2, spool cover) [Figures 1 to 5 (c-2-a, structure) 55 and 56 are spool covers provided to surround the spool shaft 42.

57 is a main part of the front spool cover 55, 58 is a main part of the rear spool cover 56, and the length of these main parts 57 and 58 in the left-right direction is slightly shorter than the length of the spool shaft 42. In addition, when viewed from the side, the main portion 57 of the front spool cover has a substantially inverted dogleg shape, and the portion below the bending point, excluding the upper end, is curved into an arc shape with the front side protruding. Further, the main portion 58 of the rear spool cover 57 is curved into an arc shape with the rear side protruding, and the lower end portion 58a is bent slightly outward.

Arms 59 and 59' project obliquely upward and forward from the left and right side edges of the upper half of the main part 57 of the front spool cover 55, and the upper end of the main part 58 of the rear spool cover 56 is Arms 60 and 60' project from both left and right edges toward the road.

Further, cutouts 57 a, 57 a, . . . reaching the lower edge of the main portion 57 are formed at a predetermined interval in the left-right direction in a portion of the front spool cover 55 near the lower edge of the main portion 57, Approximately ring-shaped support pieces 57b are provided on both left and right sides of each of these notches 578% 57a, .
57b, . . . are formed in a notch shape, and these support pieces 57b, 57b, . . . have notches 57a, 57a, .
...pressing roller 61.61 located inside
, . . , are supported at both ends of shafts 62, 62, . In addition, the rear spool cover 56
Similarly, pressing rollers 61', 61', . . . are rotatably supported in a portion near the lower edge of the main portion 58.

(c-2-b, Support to Chassis) 63.63' and 64.64' are cover supporting pieces that protrude downward from the chassis 48, and are arranged at an appropriate distance from the left and right. There is. An arm 59.59' of the front spool cover 55 is supported at the lower end of the front cover support piece 63.63' via a support pin 65.65' so as to be rotatable in the front and rear direction. Arms 60, 60' of the rear spool cover 56 are supported at the lower ends of the two side cover support pieces 64, 64' via support pins 66, 66' so as to be rotatable in the front and rear direction. .

67.67' is a link connecting the two spool covers 55 and 56, and the front end of the link 67.67' is connected to the support pin 65.65 of the arm 59.59' of the front spool cover 55. The arm 60, 60' of the spool cover 56 is rotatably connected to the connecting pin 68, 68', which is provided at a position rearward and upward from the position where the rear end is supported by the arm 60, 60'. A connecting pin 69. is provided at a position located backward and downward from the position supported by the pins 66 and 66'.
69' and is rotatably connected.

70.70' is the arm 59.5 of the front spool cover 55
9' is a spring hook protruding from a position substantially directly above the support pin 65, 65'; 71, 71' is a spring hook protruding downward from the front end of the chassis 48; A tension spring 72.72' is provided in a bow-long manner between the spring hanging piece 71.71' and the spring hanging pin 70.70'.

Therefore, since the front spool cover 55 is always biased with rotational force in the clockwise direction in FIG. 2, when no pressing force is applied to rotate it in the counterclockwise direction. As shown in FIG. 2, the pressing rollers 61, 61, . It will be positioned to cover it. Further, the links 67 and 67' are always biased with a forward and slightly upward moving force due to the rotational force biased by the front spool cover 56, so that the rear spool cover 56 is constantly biased. , the rotational force in the counterclockwise direction in FIG.
As shown in the figure, the pressing rollers 61', 61',...
- is in elastic contact with a portion of the outer circumferential surface of the spool shaft 42 that faces downward on the rear side, and most of the main portion 58 except for the lower end is positioned so as to cover half of the rear side path of the spool shaft 42. It turns out.

In this state, most of the spool shaft 42 is covered by the spool covers 55 and 56, and there is a space 7 between the outer peripheral surface and the spool covers 55 and 56.
3 is formed, and the tip of the lower end 58a of the main part 58 of the rear spool cover 56 is the rear end of the lower one 23' of the rear film guides 23 and 23'. from below, thereby causing the film running path 24' formed by the film guides 23, 23' to connect to the spool shaft 42 and the spool cover 55, 56.
It is connected to the space 73 formed between.

(c-3, Winding of Photosensitive Film) [Fig. 2] There, the winding of the photosensitive film 3 by the winding spool 18 is performed as follows.

Note that when the photosensitive film 3 is being wound, the opening/closing door 1 is closed.
6 is in the interlude position, and accordingly, the left spool diameter adjusting shaft 39 is in the enlarged diameter position, and the spool shaft 42 has its largest diameter.

(c-3-a, Loading) First, the photosensitive film 3 is loaded so as to pass through the above-mentioned bus. Incidentally, this coding involves pulling out an appropriate amount of the photosensitive film 3 from the film cassette 1 installed in the cassette loading section 10, inserting the tip end into the contact part of the film feed roller 21, 21', and issuing a loading command from this state. That is, the leading end of the photosensitive film 3 is moved by the film feed roller 21.
．． When the loading operation starts from the state where the film is inserted into the contact portion of the film feed roller 21. 19' is rotated counterclockwise, and the take-up spool 18 is rotated clockwise, so that the photosensitive film 3 is rotated counterclockwise and the take-up spool 18 is rotated clockwise.
0, while being guided in the running direction by film guides 22, 22', 23, 23', etc.,
After the tip exits the film guide 23, 23', the lower end 58a of the main part 58 of the rear spool cover 56
Guided by the spool cover 55, 56 and spool shaft 4
It is introduced into the space 73 between 2 and 2 from its lower end. The leading end of the photosensitive film 3 introduced into the space 73 is first sandwiched between the pressing rollers 61', 61', . . . provided on the rear spool cover 56 and the outer peripheral surface of the spool shaft 42. Then, the pressing roller 61 provided on the front spool cover 55 is pressed.
61, . . . and the outer circumferential surface of the spool shaft 42, so that it is tightly attached to the outer circumferential surface of the spool shaft 42, and thereby, it can be wound around the spool shaft 42 without slipping. Become.

When the leading end of the photosensitive film 3 has been wound around the spool shaft 42 several times, the take-up spool 18, pressure roller 19, 19', and film feed roller 21, 21'
rotation is stopped.

(c-3-b, Winding of Photosensitive Film) When the printing operation is performed after the photosensitive film 3 has been loaded in this manner, the film feed rollers 21, 21', the pressure roller 19. 19′,
The take-up spool 18 is rotated intermittently or continuously for a certain period of time in the rotational direction, thereby causing the photosensitive film 3 to travel and being wound around the spool shaft 42.

Note that as the winding of the photosensitive film 3 by the spool shaft 42 progresses, the amount of the photosensitive film 3 wound around the spool shaft 42 increases.
As the winding diameter of the spool cover 5 increases, the spool cover 5 becomes larger.
5 and 56 will be moved so that they are open to each other.

(c-4, Spool cover opening/closing mechanism) [Figures 1 to 5
Figure] 74 is a spool cover opening/closing mechanism, and the opening/closing ff1
It is composed of i16 and three levers to be described later.

(c-4-a, configuration) 75 is a slide lever, which has a plate shape elongated in the left-right direction, and has long holes 76, 76, . . . formed in the left-right direction at positions spaced apart in the left-right direction. At the same time, both left and right end portions thereof are formed wide, and most of the right side edge of the wide portion is formed into beveled edges 75a, 75b that gradually move rearward toward the right end.

The slide lever 75 has its elongated holes 76 and 76,
The guide bins 77, 77, . It is supported so that it can move freely left and right.

78 and 78' are the arms 60 of the rear spool cover 56;
These pressing levers 78 and 78' are formed into plate shapes that are long in the front-back direction, and have elongated holes 79, 79 and 79' that are long in the front-back direction at positions spaced apart in the front-back direction. , 79' are formed, and pressed bins 80, 80' projecting downward are provided at the rear end.

These pressing levers 78 and 78' have their long holes 78 and 78'.
Guide pins 81.81, 81', and 81' protrude downward from positions behind the cover support pieces 64 and 64' of the chassis 48 at 9.79, 79', and 79', so that they can slide freely. By being engaged, it is supported by the chassis 48 so as to be movable in the front and back direction within a certain range, and is constantly biased with a backward moving force by an elastic means (not shown). When not pressed forward, the front edges of the elongated holes 79.79 and 79', 79' are held in a position where they are in contact with the guide pins 81.81, 81', 81''.

Therefore, in this state, the pressing lever 78, 78'
The front end surface of the arm 60.80' of the spool cover 56 is on the rear side.
The slide lever 7 is located close to the rear edge.
5 has pressing levers 78 and 78' on its beveled edges 75a and 75b.
The pressed bottle 80, 80' of is contacted and its elongated hole 76
．． The right edge of 76,... is the guide bin 77.77,...
・It is prevented from moving to the left by coming into contact with .

Incidentally, when the opening/closing door 16 is in the closed position among the upper protruding pieces 16b of the opening/closing door 16, a press bottle 82 is provided to protrude upward from a position substantially directly to the left of the door support shaft 50.

(c-4-b, Operation) Then, when the opening/closing door 16 moves to the open position, the press bottle 82 is moved to the slide lever 7 as shown in FIG. 1(B).
As a result, the slide lever 75 is moved to the right and its beveled edges 75a, 75b press the pressed bin 80.80' of the press lever 78.78'. It will push you forward.

Therefore, the pressing levers 78 and 78' are moved forward, so that their front end surfaces move forward against the rear edge of the upper end of the arms 60 and 60' of the rear spool cover 56, as shown in Figure 'tS4. As a result, the rear spool cover 56 is rotated clockwise about the support pin 66, 66', and the rotation causes the link 67, 67' to rotate. Since the front spool cover 55 is pulled almost backward, the support bin 65.65'
It will be rotated counterclockwise around the center of rotation.

Thus, the two spool covers 55 and 56 open from each other so as to move away from the spool shaft 42 in the front-rear direction.

Note that this state is maintained by the opening/closing door 16 being held in the open position by the tensile force of the tension spring 53.

Further, when the opening/closing #16 moves from the open position to the closed position, the slide lever 75 becomes able to move to the left, so the pressing levers 78 and 78' are moved backward by the moving force applied thereto. As a result, the pressed bin 80, 80' is moved back to the slide lever 7.
5's beveled edge 75a1 Press the flap 5b to release the slide lever 7
5 to the left, the front spool cover 55 is rotated clockwise, and the rear spool cover 56 is rotated counterclockwise, whereby the pressing rollers 61 of these spool covers 55 and 56 are rotated. .61,
, 61', 61', . . . come into elastic contact with the outer peripheral surface of the spool shaft 42, either with the photosensitive film 3 in between or directly.

(c-5, Removal of the film taken up on the take-up spool) [Fig. After this is completed, the photosensitive film 3 is removed from the take-up spool 18 in the following manner.

First, the opening/closing door 16 is moved to the open position.

As a result, the opening 15b of the film take-out section 15 is opened, and the spool covers 55 and 56 are opened by the spool cover opening/closing mechanism 74, so that the spool shaft 4
2 is released from being covered by the spool covers 55 and 56, and the left spool diameter adjustment shaft 39 is moved to the reduced diameter position, so that the diameter of the spool shaft 42 becomes the diameter when the photosensitive film 3 was being wound up until then. becomes smaller.

As shown in FIG. 4, a gap is created between the used photosensitive film 3 that has been wound up into a roll shape by the spool shaft 42 and the spool shaft 42, so that a hand must be removed from the film removal section 15. The photosensitive film 3 wound up into a lever roll can be easily taken out of the outer casing 7.

(G. Effects of the Invention) As is clear from the above description, the take-up spool of the present invention requires the winding of a long film and the removal of the wound film after winding of the film is completed. The take-up spool includes a spool shaft having a substantially cylindrical shape in which a plurality of core members are arranged in a substantially annular shape in a cross-sectional shape perpendicular to the axial direction, and a substantially tapered spool shaft fitted inside both ends of the spool shaft. a spool diameter adjusting shaft having an outer circumferential surface; a resilient means for biasing the plurality of core members toward the axial center of the spool shaft; and movement for moving at least one of the two spool diameter adjusting shafts in the axial direction. The device is characterized in that the diameter of the spool shaft is reduced by increasing the distance between the two spool diameter adjusting shafts when removing the film wound around the spool shaft.

That is, according to the present invention, when the moving means moves the spool diameter adjusting shaft in a direction in which the distance between the two spool diameter adjusting shafts increases, the plurality of core members are moved toward each other by the elastic means. Since the spool shaft is displaced toward the side, the diameter of the spool shaft becomes smaller, which creates an appropriate gap between the spool shaft and the film wound on the spool shaft, so that the film can be easily removed from the spool shaft. can be removed.

According to the take-up spool of the present invention, it is not necessary to rewind the film already wound on the take-up spool to the supply-side spool, or to take up the film via an external cylindrical member. Also, the film taken up on the take-up spool can be removed from the take-up spool as it is.

In the above embodiment, a moving force is constantly applied to one of the two spool diameter adjustment shafts in a direction away from the other spool diameter adjustment shaft, and the force is applied when removing the film wound around the spool shaft. The operating member that is operated is provided with a pressing portion that presses the one spool diameter adjusting shaft toward the other spool diameter adjusting shaft, and the operating member is in a position other than when removing the film. When the pressure part presses one spool diameter adjustment shaft against the moving force, the distance between the two spool diameter adjustment shafts is maintained at an interval where the diameter of the spool shaft becomes thicker, and the operation is performed. When the member is moved to the position for film removal, one spool diameter adjustment shaft is automatically moved to a position farther away from the other spool diameter adjustment shaft by the moving force applied to it. However, by doing this, the diameter of the spool shaft can be changed to a size according to the predetermined work content without any special operation to change the interval between the two spool diameter adjustment shafts. be able to.

Further, in the above embodiment, the spool shaft was constructed of three core members, that is, the spool shaft was divided into three in the circumferential direction, but this division may be divided into two or four or more.
Furthermore, the outer shape of the spool shaft does not necessarily have to be cylindrical, and may have a polygonal cross-sectional shape, for example.

The elastic means for biasing the core member toward the axis of the spool shaft is not limited to the rubber band type shown in the embodiment.
Any device may be used as long as it biases the core member toward the axial center of the spool shaft. For example, it may have a structure that elastically draws the core member toward the axial center of the spool shaft. Also good.

Furthermore, in the above embodiment, when changing the diameter of the spool shaft, only one of the two spool diameter adjustment shafts is moved relative to the other spool diameter adjustment shaft, but in some cases, two spool diameter adjustment shafts may be moved. Both axes may be moved.

In the above embodiments, the present invention was applied to a take-up spool for winding up a photosensitive film for a printer, but the take-up spool of the present invention is not limited to such applications. It can be applied to various take-up spools that require winding up various long films, papers, etc. and removing the wound film after winding of the film, etc. is completed.

[Brief explanation of the drawing]

The drawings show an example of an embodiment in which the take-up spool of the present invention is applied to a take-up spool for winding up the photosensitive film for a printer that prints images using photosensitive film. ) is a cross-sectional view taken along the line I-I in Figure 2 when the film is being wound up, Figure 1 (B) is a cross-sectional view taken along the line I-I in Figure 2 when the film is being removed, and Figure 2 is a cross-sectional view taken along the line I-I in Figure 2 when the film is being removed. 3 is a schematic horizontal sectional view of the printer, FIG. 4 is an enlarged sectional view taken along line IV-IV in FIG. 3 when the film is removed, and FIG. FIG. 6 is an enlarged exploded perspective view of the take-up spool. Explanation of symbols 3... Film, 18... Take-up spool, 39.40... Spool diameter adjustment shaft 1 39a, 40e... Outer peripheral surface, 42... Spool shaft, 43... Core member , 45...
・Means of explosives, 16.46.53...Means of transportation Applicant: Sony Corporation

Claims (1)

[Scope of Claims] A take-up spool that requires winding a long film and removing the wound film after winding of the film is completed, the winding spool having a plurality of core members in a cross-sectional shape orthogonal to the axial direction. a spool shaft having a substantially cylindrical shape in which the spool shafts are arranged in a substantially annular shape; a spool diameter adjusting shaft that is fitted into both ends of the spool shaft and has a substantially tapered outer peripheral surface; It is provided with an elastic means for biasing toward the axial center side, and a moving means for moving at least one of the two spool diameter adjustment shafts in the axial direction, and when removing the film wound on the spool shaft.
A take-up spool characterized in that the diameter of the spool shaft is reduced by widening the interval between the two spool diameter adjustment shafts.