JPH01155345A - Developing device - Google Patents

Abstract

PURPOSE:To reduce the size of the shape and pressing force of a pressure applying means and to reduce the size and weight of the developing device by moving a roller as a constituent element of the pressure applying means for pressing a photosensitive material and a developing material against each other so that the photosensitive material and developing material are scanned. CONSTITUTION:A stage roller 11 presses the photosensitive film 3 and developing paper 4 with a pressure roller and also cooperates with a paper pressure roller to feed the photosensitive film 3 and developing paper 4. When a conveyance belt 43 runs, a moving block 50 is moved right and left together with a carriage 51 and the pressure rolls 66 and 66' roll while pressed against the pressure receiving surface 12a of the stage roller 11. When a photosensor 44 detects the moving block 50 reaching one end or the other end of its movement range, a motor 37 is rotated forward and backward alternately and the moving block 50 moves between both ends of the movement range intermittently.

Description

[Detailed description of the invention] The developing device of the present invention will be explained according to the following items.

A. Industrial field of application B9 Summary of the invention C0 Prior art a. - Background of boat fishing An example of a conventional pressure printer [Figure 8] D1 Problems to be solved by the invention [Figures 8 and 9 [Figure] Means F for solving E1 problem, Example [Figures 1 to 7] a. Photosensitive film, color developer paper [Figures 1, 3 to 5] b. Printer [Figure 1 Figures to Figures 7] b-1, Base part [Figures 2 to 4 b-2, Stage roller, Stage drive unit [Figures 1 to 5] - b-3, FOT, Film guide plate etc. [Fig. 4] b-4, movable frame, guide shaft, presser roller [Figs. 1 to 5] b-4-a, movable frame, guide shaft b-4-b, presser roller b-5, Feed belt, sensor [Figures 1 to 5] b-6, moving block [Figures 1 to 6] b-6-a, carriage, eaves piece b-6-b, roller support arm, machining Pressure roller [Figures 1 to 6] b-8-c, Pressure roller to stage roller and movement b-7, Paper feed tray, paper feed roller [Figure 4] b-8, Print [ FIG. 7] b-8-a, circuit [FIG. 7 1 b-a-b, operation G0 Effects of the invention (A, industrial application) The present invention relates to a novel developing device. Specifically, a photosensitive material comprising a dye precursor that forms a color when combined with a specified developing substance or a color forming substance that itself has color forming properties is encapsulated in microscopic capsules of an exposure-curing type or an exposure-softening type, and a prescribed color developing substance. The developing device relates to a developing device that develops an image on the color developing material by pressing the material with two pressure members that are brought into pressure contact with each other, and in which one of the two pressure members is pressed against the other pressure member. By pressing the photosensitive material and the developing material while scanning, this type of developing device can be made small and lightweight, and has a structure that is easy to assemble and maintain. A new developing device that can significantly reduce the number of parts by serving as a feeding means for feeding the photosensitive material and color developer material, and also eliminates development unevenness caused by feeding the photosensitive material and color developer material. The aim is to provide equipment.

(B. Summary of the Invention) The developing device of the present invention develops a predetermined image on the color developer material by pressing the photosensitive material and the color developer material against each other at a predetermined pressure using two pressure members that press the photosensitive material and the color developer material against each other. One of the two pressure members is a stage rotatable in the feeding direction of the photosensitive material, and the other is a roller that rolls in a direction intersecting the feeding direction while being in pressure contact with the stage. At the same time, the stage is rotated when feeding photosensitive materials, etc., and as a result, the pressure required for the pressure member can be significantly reduced, making this type of developing device compact, lightweight, and inexpensive to assemble and maintain. First, the number of parts can be significantly reduced, and friction can be prevented between the photosensitive material and the developing material and the stage when feeding them. This enables clean development to be carried out without causing uneven feeding of the photosensitive material or uneven development caused by the above-mentioned friction.

(C, Prior Art) (a, - Boat Fishing Background) There are various types of developing systems for developing images on color developing paper. There are systems in which an image is developed on the color developing material by bringing the materials into pressure contact with each other, and such developing systems are used in pressure printers, pressure fixing copying machines, and the like.

For example, pressure-type printers are made by enclosing a dye precursor material that develops color by combining with a predetermined developing material within a microscopic capsule that becomes pressure-resistant and non-destructive when exposed to a predetermined light. A photosensitive film coated with a dye precursor is used as a photosensitive material, and a printing film is formed by exposing the exposed surface of the photosensitive film to, for example, ultraviolet light in accordance with each resolved pixel of a predetermined image. At the same time, by placing the photosensitive film in this state on developer paper coated with a predetermined developing substance and applying pressure, the unexposed capsules are destroyed and the dye precursors in the capsules are transferred to the developer paper. , whereby an image appears on the developer paper.

(b. An example of a conventional pressure printer) [FIG. 8] FIG. 8 schematically shows an example (a) of a conventional pressure printer.

In the figure, b is a long photosensitive film, and C is a paper-type developer paper.

d and e are approximately cylindrical pressure rollers having a length slightly longer than the width of the developing paper C, and the lower pressure roller e is rotatably supported by a support frame (not shown) and rotated by a motor. , the upper pressure roller d is rotatably supported by a pressure frame (not shown) which is pressed downward by a strong elastic member, and is in pressure contact with the lower pressure roller e, and the photosensitive film b After the photosensitive film b is exposed, the developing paper C and the developing paper C are superimposed on each other and are fed between the pressure rollers d and e.

When the lower pressure roller e rotates, the upper pressure roller d pressed against it also rotates, so that the photosensitive film b and the color developer paper C are moved between the two pressure rollers d and e. It is run while being pressed, and due to this pressure, the unexposed dye precursor capsules of the photosensitive film b are destroyed and the dye precursors encapsulated therein are transferred to the developing paper C, and as a result, the dye precursor is transferred to the developing paper C. The precursor material is developed on developer paper C to print an image on the developer paper.

(D. Problem to be solved by the invention) [Figures 8 and 9
[Figure] According to the printer a described above, there is an advantage that the printing speed is high because the printing operation can be performed continuously without any breaks.

However, the two upper and lower pressing rollers d and e require extremely large pressure in order to press the entire band-shaped pressing area extending in the width direction of the photosensitive film b and color developing paper C at once. For example, when the pressure rollers d and eIJ (sizes corresponding to A4 size color developing paper) are used, the pressure applied by the pressure rollers d%e is 1,000Kg to 1,50Kg.
0 kg is required, and the support frame supporting the upper pressure roller d is provided with an extremely large pressure source capable of applying such a strong pressure, such as a compression spring with an extremely high spring constant.

Therefore, printer a using such a pressure roller d%e requires extremely high mechanical strength in each part, and also uses a motor with a large output or directs the rotational force of the motor to the lower side. Since it is necessary to use a chain or the like for the transmission mechanism that transmits the information to the pressure roller e, the shape and weight are large compared to the size of the image to be printed, and
There are problems in that the cost is high and assembly and maintenance are difficult.

Therefore, as shown in FIG. 9, a pressurizing means for press-contacting the photosensitive film b and the color developing paper C is attached to a stage f fixed to the base part and a substantially circular disk that rolls while being in press-contact with the stage f. The pressure roller g is scanned in a direction intersecting the feeding direction of the photosensitive film b, etc. with the pressure roller g in pressure contact with the stage f with the photosensitive film b and the color developing paper C sandwiched therebetween. , two sets of paper feed rollers h% sandwiching the stage f and spaced apart in the feeding direction of the photosensitive film b, etc.
h and 1% i to feed the photosensitive film b and the color developing paper C at a constant pitch, and with such paper feeding and pressure roller g
I have considered performing pressure development by alternately repeating scanning.

According to such a printer j, the pressure roller g, which is a component of the pressure means, presses the photosensitive film b and the color developing paper C.
Since it moves 8 times as if scanning, the pressurizing force can be very small.

However, paper feed rollers h, h, i, and i for feeding the photosensitive film b and the developing paper C are required, as well as a support mechanism to support them and an elastic force to press the pair of upper and lower paper feed rollers against each other. Since a generating means and the like are required, there is a problem that the number of parts increases.

Furthermore, since the photosensitive film b and the developing paper C are fed while being in contact with the stage f, the amount of feed tends to become uneven due to the frictional load between them and the stage f. There is a problem in that good development cannot be carried out because unevenness occurs in the development density of the individual pressing areas of the photosensitive film b and the color developer paper C that are pressed by the pressure roller g.

Furthermore, as photosensitive film b and developer paper C come into sliding contact with stage f, wrinkles are likely to occur in photosensitive film b and developer paper C, and a large amount of fine powder from photosensitive film b and developer paper C is generated. There is also the problem that the particles may adhere to surrounding members, staining the developed image or causing malfunction.

(E. Means for Solving the Problems) Therefore, in order to solve the above-mentioned problems, the developing device of the present invention has a pressure means for bringing the photosensitive material and the color developing material into pressure contact with each other on the outer peripheral surface. a stage roller having a cylindrical pressure-receiving part with a pressure-receiving surface and supported rotatably in the axial direction; and a pressurizer that rolls in the axial direction of the stage roller while being in pressure contact with the pressure-receiving surface of the stage roller. The photosensitive material and the color developing material are stacked one on top of the other and are developed by applying pressure between the stage roller and the pressure roller, and the stage roller is rotated when the photosensitive material is fed. This is what I did.

Therefore, according to the developing device of the present invention, the roller, which is one component of the pressing means for bringing the photosensitive material and the color developing material into pressure contact with each other, scans the photosensitive material and the color developing material.
Since the shape of the pressurizing means and the pressurizing force required for the pressurizing means can be made considerably small, this type of developing device can be made small, lightweight, low cost, and easy to assemble. The structure is easy to maintain, and since the photosensitive material and color developing material are fed by rotating the stage roller, there is no friction between them and the stage when feeding the photosensitive material and color developing material. There is no occurrence of uneven feeding of the photosensitive material, etc., and the photosensitive material, etc. can be fed with high precision at a predetermined pitch.
It is possible to reliably prevent the occurrence of uneven development due to uneven feeding, and always perform clean development.
Furthermore, it is possible to prevent wear and paper dust from adhering to the pressure-receiving surface of the stage, and furthermore, since the stage, which is one of the pressure means, also serves as a feeding means for feeding the photosensitive material, etc. The number of parts can be significantly reduced.

(F. Embodiment) [FIGS. 1 to 7] Details of the developing device of the present invention will be described below according to the illustrated embodiment.

In the embodiment shown in the drawings, the developing device of the present invention is applied to a printer 1 that uses a long photosensitive film as the photosensitive material.

First, an example of photosensitive film and color developing paper will be explained,
After that, printer 1 will be explained.

(a, photosensitive film, developer paper) [Figures 1, 3 to 5] 2 is a film cassette (see Figure 4) in which a long photosensitive film 3 is stored in a rolled state. ).

The photosensitive film 3 is attached to one side 3a (
Hereinafter, it will be referred to as "the exposed surface." ) is coated with a countless number of photosensitive dye precursors, and the dye precursors are of the exposure-curable type.
For example, a dye precursor material that develops a predetermined color by combining with a predetermined developing substance is encapsulated within a microscopic capsule that becomes pressure-resistant and non-destructive when irradiated with ultraviolet light of a predetermined wavelength. Become.

4.4,... is the developer paper on which the image is printed,
It is formed into a substantially rectangular single sheet having substantially the same width as the width of the photosensitive film 3, and a dye precursor of the dye precursor is formed on one surface 4a (hereinafter referred to as "development surface"). A developing material that combines with a substance to develop a predetermined color is applied.

(b, printer) [Figs. 1 to 7 (b-1, base part) [Figs. 2 to 4] 5 is the base part of the printer 1, including the bottom plate 6 and the The left side in Figure 3 is the left side, and the right side is the right side.The lower side in the figure is the front side, and the upper side is the rear side.Furthermore, the upper side in Figure 2 is the upper side, and the lower side is the lower side. Do.Below.

When referring to a direction in the explanation, this direction is used. ) side walls 7.7 erected upward from both ends;
', an axial crosspiece 8 that connects the front end of the side wall 7.7' at approximately the midpoint in the vertical direction, and a back plate 9 that connects the rear end of the side wall 7.7'.

A bearing 10.10 is fixed at a position approximately in the middle of the upper end of the outer surface of the left and right side walls 7.7' in the longitudinal direction.

(b-2, stage roller, stage drive unit) [FIGS. 1 to 5, 11 is a stage roller, and the photosensitive film 3 and color developing paper 4 are sandwiched between it and a pressure roller, which will be described later. This is for pressing the photosensitive film 3 and the color developing paper 4 against each other, and also for feeding the photosensitive film 3 and the color developing paper 4 in cooperation with a paper pressing roller, which will be described later.

The stage roller 11 has a pressure-receiving portion 12 having a substantially cylindrical shape that is slightly longer than the width of the developing paper 4, and support shafts 13 and 13 that protrude along the axial direction from the center of both end surfaces of the pressure-receiving portion 12, which have relatively high hardness. The bearing 10.10 is integrally formed of a metal having
is rotatably supported.

Therefore, the stage roller 11 is supported by the upper end portion of the base portion 2 so as to be rotatable in a direction around its axis in a posture extending substantially horizontally along the left-right direction.

Furthermore, a driven gear 14 is fixed to a portion of the two support shafts 13.13 that protrudes from the right bearing 10.

The outer circumferential surface 12a of the pressure receiving portion 12 is a pressure receiving surface that is contacted by a pressure roller, which will be described later, and both ends 12b, 12b of the pressure receiving surface 12a are chamfered in an arc shape.

Reference numeral 15 denotes a drive unit for rotating the stage roller 11 at a predetermined timing, and includes a motor 16 fixed to a portion of the bottom plate 6 on the right side of the right side wall 7', and a drive unit fixed to a rotating shaft 16a of the motor 16. The intermediate gear 18 consists of a driven gear 14 fixed to the support shaft f3 of the stage roller 11, an output gear 17, and the like, which is rotatably supported by the side wall 7'. is engaged with.

The motor 16 is, for example, a stepping motor, and when feeding the photosensitive film 3 and the color developing paper 4, it is rotated clockwise in FIG. It is designed to be electromagnetically locked while not being fed.

Thus, the stage roller 11 is locked by the motor 16 via the driven gear 14, intermediate gear 18 and output gear 17 while the motor 16 is not rotating, and as the motor 16 rotates, the stage roller 11 is locked by the motor 16 as shown in FIG. It will be rotated in the clockwise direction (hereinafter referred to as the "paper feeding direction").

Incidentally, the distance between both end surfaces of the pressure receiving section 12 of the stage roller 11 and the side walls 7 and 7' of the base section 5 is slightly larger than the size of the moving block in the left-right direction, which will be described later.

(b-3, FOT, film guide plate, etc.) [Fig. ), and the base portion 5 is placed with its light emitting surface 19a facing substantially rearward.
is fixed.

20 is a paper feed guide plate, and 21 is a paper discharge guide plate, which are installed between the left and right side walls 7 and 7' of the base part 5 at a position slightly lower than the top of the stage roller 11. The front end of 2o is the pressure receiving surface 1 of the stage roller 11.
2a from the rear, and the rear end of the paper discharge guide plate 21 approaches the pressure receiving surface 12a of the stage roller 11 from the front.

Reference numeral 22 denotes a film guide roller, which is rotatably installed between the upper ends of the rear ends of the side walls 7 and 7' of the base portion 5.

The film cassette 2 is attached to the rear end of the lower end of the base portion 5 with its axial direction extending along the left-right direction and the film outlet 2a facing upward.

After the photosensitive film 3 is pulled out from the film cassette 2, it is wound around a film guide 22, and a winding (not shown) extends forward from there along the upper surfaces of the paper feed guide plate 20 and the paper discharge guide plate 21. It is adapted to be wound onto a take-up spool, contacts the light emitting surface 19a of the FOT 19 at a position between the film cassette 2 and the film guide 22, and also contacts the light emitting surface 19a of the FOT 19 at a position between the film cassette 2 and the film guide 22. The portion in between is brought into contact with the pressure-receiving surface 12a of the stage roller 11 so as to be wound around it, as both front and rear ends of the portion are pressed against the stage roller 11 by a presser roller, which will be described later.

(b-4, movable frame, guide shaft, presser roller) [FIGS. 1 to 5 (b-4-a, movable frame, guide shaft) 23 is a movable frame, and the side wall 7 of the base portion 5. 7', two side plates 24, 24' that are spaced apart in the left-right direction and opposed in parallel, and a connecting plate 25, 26 that connects the upper ends of these side plates 24, 24'. consists of side plate 24.2
The lower end of the rear end of the base part 4' is rotatably supported by the support @27.27 on the upper end of the rear end of the side wall 7.7' of the base part 5.

The side plates 24, 24' have contact portions 24a, 24'a that protrude outward from the front edge thereof, and lock pins 28.24' that protrude inward from the corner where the front edge and the lower edge intersect. 28 (only the one on the right side is shown in the drawing), and the movable frame 23 is in a state in which the contact portions 24a, 24'a are in contact with the upper edge of the side wall 7.7' of the base portion 5. Then, the lock claws 29a, 29a (only the right one is shown in the drawing) at both ends of the lock element 29 supported by the crosspiece 8 of the base portion 5 are engaged with the lock pins 28, 28 from above. By this, it is locked to the base part 5.

Reference numeral 30.30 denotes a guide shaft having a cylindrical shape elongated in the left-right direction, and is arranged above the stage roller 11 so as to be spaced apart from each other in the front-rear direction, and its both ends are fixed to the side plates 24, 24' of the movable frame 23. has been done.

(b-4-b, presser rollers) 31 and 32 are presser rollers that cooperate with the stage roller 11 to feed the photosensitive film 3 and developer paper 4, and have approximately the same length as the pressure receiving part 12 of the stage roller 11. The supporting arms 33, 33, . The torsion springs 34 provided on the support arms 33, 33, . Stage roller 1 due to the elastic force of .34,...
It is designed to come into elastic contact with the pressure receiving part 12 of No. 1.

Torsion springs 34, 34, . . . are coil portions 34 thereof.
a, 34a, . . . are fixed to the side plate 24.24' and are fitted onto a support shaft 35.35 which rotatably supports the base of the support arms 33.33, . ,3
4b, . . . engage with the upper edge of the support arm 33, 33, .
. . is a receiving part 36.36 fixed to the side plate 24.24',
..., whereby the support arm 33.3
3. A moving force is applied to move the rotating end downward.

When the stage roller 11 rotates in the paper feeding direction, the presser rollers 31 and 32 which are in elastic contact with the stage roller 11 rotate counterclockwise in FIG. Presser roller 31
．． Since the portion sandwiched between the photosensitive film 3 and the color developing paper 4 is sent approximately to the right, it is moved by an amount corresponding to the amount of rotation of the stage roller 11. Since the portion of the stage roller 11 that is wrapped around the pressure receiving portion 12 moves integrally with the stage roller 11, there is no friction between the photosensitive film 3, developer paper 4, and the stage roller 11.

(b-5, transfer belt, sensor) [Figures 1 to 5 37 is a motor, and the left side plate 2 of the movable frame 23
It is supported by a mounting plate 38 protruding from 4 toward the left side,
The axial direction is along the vertical direction, and a drive pulley 39 is fixed to the rotating shaft 37a.

Reference numeral 40 denotes a driven pulley, and a support plate 41 protrudes toward the right side from the right side plate 24' of the movable frame 23.
It is rotatably supported by a support shaft 42 fixed to.

Incidentally, the driving pulley 39 and the driven pulley 40 are arranged at a slightly higher position than the guide shaft 30, 30.

An endless 8-feed belt 43 is stretched between the driving pulley 39 and the driven pulley 40.

A carriage of a moving block, which will be described later, is connected to the transfer belt 43, and the motor 37 rotates clockwise in FIG. 3 (hereinafter referred to as "normal rotation") when moving the moving block to the right. ), and to move the moving block to the left, rotate it counterclockwise (
Hereinafter, this will be referred to as "reversal." ).

44 and 45 are sensors for detecting that the 8th shift block, which will be described later, has reached the end of its movement range;
A pair of light emitting elements 46.46 facing each other with a predetermined interval
and light receiving elements 47 and 47, and these light emitting elements 4
The light receiving elements 6.46 and the light receiving elements 47.47 are supported by support pieces 48.48 fixed to both left and right ends of the connecting plate 25 so as to face each other while being separated from each other in the front-rear direction.

49.49' is a stopper fixed to the inner surface of the side plate 24.24'.

(b-s, moving block) [Figures 1 to 6] 50 is a moving block, which includes a carriage supported movably in the left and right direction on the guide shaft 30, 30, and a carriage rotatably supported on the carriage. The roller support arm comprises two roller support arms, two pressure rollers rotatably supported by the roller support arms, and a compression spring for constantly biasing the roller support arms downward.

(b-6-a, carriage, eaves piece) 51 is a carriage.

52 is the main part of the carriage 51, and the main part 52 has a substantially square shape when viewed from above, and has a block shape with a thickness of about half the height of the movable frame 23.
The front and rear ends of the upper surface are slightly higher than the remaining parts, and two spring placement holes 53 and 53 are formed at the center in the front and back direction and are spaced apart from each other in the left and right direction. There is.

Reference numeral 54.54 denotes an arm support piece that protrudes downward from a position sandwiching the spring arrangement hole 53.53 from both front and rear sides of the lower surface of the main portion 52, and the arm support piece 54.5
Support holes 54a, 54a passing through the arm support pieces 54, 54 in the thickness direction, that is, in the front-rear direction, are formed at substantially intermediate portions of the arm support pieces 54, 54 in the left-right direction.

Reference numeral 55.55.55 denotes an insertion hole that passes through the main portion 52 in the horizontal direction at approximately the middle in the height direction, and this insertion hole 55.55.55 extends across the spring arrangement hole 53.53. There is.

Reference numerals 56 and 56' designate eaves pieces that have a rectangular shape that is long in the left and right direction when viewed from above, and more than half of these eaves pieces 56 and 56' in the width direction extend from the top surface of the main portion 52 of the carriage 51 back and forth. It is fixed to the carriage 51 in a protruding position, and a protrusion 57.57 is provided on the lower surface of the carriage 51.
Further, the front eave piece 56 is integrally formed with a light shielding part 56a projecting upward from its front edge.

58, 58, . . . are support shafts protruding from two positions spaced apart in the left-right direction on both the front and rear surfaces of the main portion 52 of the carriage, and these four support shafts 58, 58, . Guided rollers 59, 59, . . . are rotatably supported, and deep engagement grooves 59a, 59 having a V-shaped cross section are formed on the outer peripheral surfaces of these guided rollers 59, 59, .
a, . . . are formed.

The carriage 51 is guided by rollers 59 and 59,
The engagement grooves 59a, 59a, .
A protrusion 57.57 formed on the guide shaft 30.30 faces the guide shaft 30.30 from above at a slight distance, so that it is supported by the guide shaft 30.30 so as to be freely movable in the left and right direction. A connecting piece 60 fixed to the upper surface of the portion 52 is connected to the transfer belt 43.

Therefore, the carriage 51 is moved in the left-right direction as the transfer belt 43 runs.

Note that when the movable frame 23 is locked with respect to the base portion 5, when a pressure roller (described later) comes into elastic contact with the stage roller 11 from above, the carriage 51 is urged upward by the reaction force generated by the elastic contact. As a result, the guided rollers 59, 59, . . .
30 from below to define the position of the carriage 51 in the vertical direction.

(b-6-b, Roller support arm, pressure roller) [Figures 1 to 6] 61 and 62 are roller support arms.

Reference numerals 61a and 62a are the main parts of the roller support arms 61 and 62, and support pieces 61b, 61b, and 62b are opposed to each other in parallel from both front and rear ends thereof.

62b protrudes downward, and these supports.

Insertion holes 63, 63, . . . that pass through the holding pieces 61b, 61b, 62b, 62b in the front-rear direction are formed at approximately the center thereof, and circular shallow recesses 64, 64 are formed on the upper surface of the main portion 61a162a. It is formed.

Further, the support portion 65 protrudes rightward from the rear half of the right side of the main portion 61a of the left roller support arm 61, and also extends from the front side of the left side of the main portion 62a of the right roller support arm 62. Support part 65 protruding from the road half to the left
are formed integrally with each other, and these support parts 65.
Insertion holes 65a, 65a are formed passing through 65 in the front-rear direction. In addition, the tip surface 6 of these support portions 65.65
5b and 65b are circular arc surfaces extending in the vertical direction.

66 and 66' are pressure rollers, and these pressure rollers 6
6.66' has a disk shape with a thickness of about one-sixth of the diameter of the pressure receiving part 12 of the stage roller 11, for example, about 4 mm, and is made of a metal with high hardness. The entire outer circumferential surfaces 66a, 66'a in the width direction are formed in a surface extending parallel to the axis of the pressure roller 66, 66'.

Moreover, 67.67 is a support shaft press-fitted into the insertion hole 63.63 formed in the support pieces 61b, 61b, 62b, 62b of the roller support arm 61.62, and the pressure roller 66.67 ' are support holes 66b, 6 formed in the center of the roller support arms 61, 62, located between the support pieces 61b and 61b and between the support pieces 62b and 62b.
The support shafts 67, 67 are rotatably inserted through the shafts 6'b.

Therefore, the pressure roller 66, 66' is
1.62, and part of it is supported by support pieces 61b, 61b.

62b, protruding downward from the lower ends of 62b.

The two roller support arms 61 and 62 have their support portions 65 and 65 overlapped in the front and back direction, and most of the roller support arms 61 and 62, except for their lower ends, are connected to the two arm support pieces 54 provided on the carriage 51. The insertion holes 65a, 65a formed in the support part 65.65 are located between the support holes 54a, 54 formed in the arm support piece 54.54.
A support shaft 68 inserted through 4a is rotatably inserted, and thereby rotatably supported by the lower end portion of the carriage 51.

Reference numeral 69.69 is a spring bearing shaft having a substantially cylindrical shape, and flanges 69a, 69a are formed near the upper end of the shaft, and flanges 69a, 69a are formed at positions slightly downward from the flanges 69a, 69a, perpendicular to the axial direction. Insertion holes 69b, 69b penetrating in the direction
is formed.

The spring bearing shaft 69.69 is inserted into the spring arrangement hole 53.53 formed in the main portion 52 of the carriage 51 with a slight margin around the spring arrangement hole 53.53, and is inserted into the insertion hole 69b, 89b. Insertion hole 5 formed in main part 52
5.55.55 is supported by the carriage 51 by being inserted through the support bin 70, which is press-fitted, and
A compression spring 71.71 is compressed between the flanges 69a, 69a of the spring bearing shaft 69.69 and the recesses 64.64 formed in the upper end surfaces of the main parts 61a, 62a of the roller support arms 61.62. There is.

Therefore, due to the elastic force of the compression springs 71 and 71, the left roller support arm 61 is biased with rotational force in the counterclockwise direction in FIG. 5, and the right roller support arm 62 is biased in the clockwise direction. The rotational force will be energized.

In addition, the main parts 61a and 62a of the roller support arms 61 and 62
A part of a stopper (not shown) is protruded from the opposing surfaces of the main parts 61a and 82a, and when the pressure roller 66, 66' is not pressed upward, the opposing surfaces of the main parts 61a and 82a and this stopper are provided. By partially abutting the support arms 61 and 62, the rotation of the rollers and support arms 61, 62 due to the rotational force is stopped at a certain point.

(b-6-c, Pressure contact and movement of pressure roller to stage roller) When the movable frame 23 is locked to the base portion 5, the pressure rollers 66 and 66' are approximately aligned with the axis of the stage roller 11. The position where the movable block 50 abuts the stopper 49 provided on the left side plate 24 of the movable frame 23 as shown by the two-dot chain line in FIG.
Hereinafter, this will be referred to as "the position at one end of the movement range." ) or as shown by the solid line in the figure, the right side plate 24
When the pressure roller 66, 66' is in contact with the stopper 49' provided at Located off the beaten track.

Then, the pressure rollers 66 and 66' are connected to the stage roller 11.
When the pressure rollers 66, 66' are separated from the pressure receiving section 12, the lower end of the outer circumferential surface 66a166'a of the pressure roller 66, 66' is located at a slightly lower height than the top of the pressure receiving surface 12a of the pressure receiving section 12.

Therefore, when the moving block 50 is located between one end position and the other end position in the movement range (hereinafter referred to as the "contact area"), the pressure rollers 66 and 66' The roller support arms 61.62 ride on the pressure receiving surface 12a of the pressure receiving portion of No. 11 and are compressed by the compression springs 71.
It is relatively pressed upward by the stage roller 11 against the elastic force of the stage roller 71 .

Therefore, when the moving block 50 is located in the contact area, the pressure roller 66, 66' is pressed against the pressure receiving part 12 of the stage roller 11 from above by the elastic force of the compression spring 71, 71. become.

As described above, when the transfer belt 43 runs, the carriage 51 is moved in the left-right direction, so the moving block 50 is moved in the left-right direction, and thus, while the moving block 50 is moving in the contact area, the carriage 51 is moved in the left-right direction. Knowledge pressure roller 66.6
6' rolls while being in pressure contact with the pressure receiving surface 12a of the stage roller 11, and when the movable block 50 comes to one end position or the other end position in the movement range, the pressure rollers 66 and 66' Pressure receiving surface 12 of stage roller 11
It will come off to the side from a.

In addition, as described above, the pressure receiving surface 12 of the stage roller 11
Since both ends 12b, 12b of a are chamfered in an arc shape, the upward displacement of the pressure roller 66, 66' is smoothly guided by the chamfered surfaces 12b, 12b, and rides on the pressure receiving surface 12a. It turns out.

Furthermore, when the moving block 50 reaches the position of one end of the moving range, the light shielding part 56a of the front eaves piece 56 enters between the light emitting element 46 and the light receiving element 47 of the left sensor 44 and receives light from the light emitting element 46. The light irradiated toward the element 47 is blocked, and when the moving block 50 comes to the other end position in the moving range, the light blocking part 56a is inserted between the light emitting element 46 and the light receiving element 47 of the right sensor 45. The moving block 50
It is detected that the moving range has reached one end position or the other end position.

When the printing operation starts, the motor 37 alternately and intermittently repeats normal rotation and reverse rotation, so that the moving block 50 intermittently moves between both ends of its movement range.

(b-7, paper feed tray, paper feed roller) [Figure 4] 72 is a paper feed tray in which a large number of the color developing papers 4.4, . . . are stored, 73 is a paper feed roller (these are shown in Figure 4). ), and when the printing operation starts, the developing papers 4, 4, . . . are fed one by one between the presser roller 32 and the stage roller 11 at a predetermined timing. It looks like this.

(ba, Print) [FIG. 7] Therefore, the printing operation by the printer 1 configured as described above is performed, for example, as follows.

(b-8-a, circuit) [FIG. 7] FIG. 7 shows a circuit for controlling the drive of the paper feed motor 16 and carriage feed motor 37 of the printer 1.

74L and 74R are mono multivibrators, and 74
A signal from the sensor 44 is input to L, a signal from the sensor 45 is input to 74R, and the sensor 44.
Every time the "1" signal from 45 is input, a pulse of a predetermined width is output. The drive time of the paper feed motor 16 is determined by the width of the pulses output from these mono-multivibrators 74L174R. This driving time is the time required to feed the photosensitive film 3 and color developing paper 4 one predetermined pitch.

75 is an OR circuit, and the mono multivibrator 7
The outputs of 4L and 74R are inputted, and the outputs are inputted to the drive circuit 76 of the paper feed motor 16. The drive circuit 76 drives the paper feed motor 16 to which the pulses are output from the mono-multivibrators 74L and 74R.

The above sensors 44.45 have their light emitting elements 46.46
When the light-receiving element 47.47 is blocked by the light-shielding part 56a of the eaves piece 56 supported by the carriage 51, a signal "1" is generated.
When the light emitting element 46.46 and the light receiving element 47.47 are not disconnected, a signal "0" is output.

77 is an OR circuit to which the outputs of the sensors 44 and 45 are input, and the output of the OR circuit 77 is input to a flip-flop 78.

Reference numeral 79 denotes a drive circuit for driving the carriage feed motor 37, into which the output of the flip-flop 78 is input, and rotates forward or reverse depending on the polarity of the output of the flip-flop 78. That is, the flip-flop 78 is the OR circuit 77
Each time the output "1" is input manually, outputs of positive and negative polarity are alternately output. Further, a start/stop signal is input to this flip-flop 78,
If the start signal that is output when printer 1 enters the print ready state is input, it will output, but if printer 1 is not in the print ready state and the start signal is not input, it will not output. There is.

In addition, the output of the OR circuit 75 is also input to the drive circuit 79 of the carriage feed motor 37, and when a "1" signal from the OR circuit 75 is input manually, the signal is input while the signal is being input. The motor 37 is not driven.

(b-a-b, operation) When the print operation start command is issued, the movement block 50
is moved to one end or the other end of its movement range and is put on standby at that position, that is, a position where the pressure rollers 66, 66' do not contact the stage roller 11, and the photosensitive film 3 is moved to one end or the other end of its movement range, and the photosensitive film 3 31 and 32 at a constant pitch, and the exposure surface 3a is exposed by the FOT 19 every constant line, thereby forming a print film of one image.

Further, at a predetermined timing after or before the formation of this photographic film is completed, one sheet of color developer paper 4 is sent out with its leading edge positioned slightly ahead of the leading edge of the photographic film, and the photosensitive film 3 and is supplied onto the pressure receiving surface 12a of the stage roller 11.

When the leading edge of the portion of the photosensitive film 3 that has become the printing film reaches the top of the pressure receiving surface 12a of the stage roller 11, this is detected by a sensor (not shown), and a start signal is output and the motor 37 is activated. Rotate and move the moving block 50. Therefore, the pressure roller 66, 66' is the pressure receiving surface 12a of the stage roller 11.
, and is rolled in the left and right direction while being in pressure contact with the pressure receiving surface 12a with the developer paper 4 and photosensitive film 3 in between, that is, the developer paper 4 and the photosensitive film 3 are scanned in the width direction. As a result, a predetermined area (hereinafter referred to as a "pressing area") extending in a band shape in the width direction of the color developer paper 4 and the photosensitive film 3 is brought into contact with each other by the pressure roller 66, 66' and the pressure receiving surface f2a of the stage roller 11. It will be pressed.

When the moving block 50 reaches one end or the other end of the moving range, the pressure rollers 66, 66' are laterally separated from the stage roller 11 and the sensor 44 or 45 is moved.
There is an output from the flip-flop 78, and the output polarity of the flip-flop 78 is inverted. However, at the same time, the output of the OR circuit 75 is input to the drive circuit 79, so the carriage feed motor 37 stops. On the other hand, when there is an output from the sensor 44 or 45, the mono multivibrator 74L or 74
A pulse signal with a predetermined width is output from R, and the motor 16 rotates for a time determined by the pulse width, rotating the stage roller 11 in the paper feeding direction, and the developer paper 4 and photosensitive film 3 are fed. The colored paper 4 and the photosensitive film 3 are run at a predetermined pitch, that is, at a pitch slightly narrower than the width of the press-contact area, and when this running is completed, the input from the OR circuit 75 to the drive circuit 79 disappears, so that the motor 37 is stopped. It will be rotated. When the moving block 50 reaches the other end or one end of the moving range, there is an output from the sensor 45 or 44, and first, the photosensitive film 3
After the developer paper 4 is fed a predetermined pitch, the moving block 50 is moved again. The running of the developing paper 4 and the photosensitive film 3 and the vertical movement of the moving block 50 are alternately performed.

Therefore, each time the pressure rollers 66 and 66' scan the photosensitive film 3 and the color developer paper 4 once in the width direction, the FOT 19 in the pressure contact area of the portion of the photosensitive film 3 that is to be used as a printing film prevents the photosensitive film 3 from being exposed to light. The capsule of the dye precursor is destroyed and the dye precursor is transferred to the developing surface 4 of the color developing paper 4.
As a result, a part of the predetermined image is printed on the color developer paper 4, and by repeating such printing, one image is developed on the color developer paper 4. I'm going to put it out.

Since the pressure rollers 66 and 66' are moved to scan the photosensitive film 3 and the developer paper 4 in the width direction thereof, the pressure applied to the stage roller 11 is, for example, Assuming that a pressing force of 1,000 Kg to 1,500 Kg is required for the entire pressure contact area, a strength of about 2 to 3 Kg will suffice.

Furthermore, since the developer paper 4 and the photosensitive film 3 are fed by the rotation of the stage roller 11 around which they are wound, there is no friction between the developer paper 4 and the photosensitive film 3 and the stage roller 11. Therefore,
The color developing paper 4 and the photosensitive film 3 are always fed with high precision at a constant pitch. Therefore, there is no unevenness in the feeding amount of the color developer paper 4 and the photosensitive film 3.
The photosensitive film 3 and the developing paper 4 are sequentially brought into pressure contact by the stage roller 11 and the pressure rollers 66 and 66' in pressure contact areas of a constant width that are precisely defined. Since development is performed using a constant pressure, clean development without unevenness in development density can be achieved.

In this embodiment, since the two pressure rollers 66 and 66' sequentially apply pressure to the same location, it is possible to further reduce the application force, and the -th application completely destroys the area. The capsules that were not removed will be completely destroyed by the second pressurization, and density unevenness can be almost completely eliminated. Furthermore, since the pressure applied to one part can be reduced, damage to the photosensitive film or color developing paper can be reduced. That is, it is possible to eliminate these collapses, undulations, damage to the ends, etc.

(G. Effects of the Invention) As is clear from the above description, the developing device of the present invention includes a cylindrical pressure-receiving portion whose outer circumferential surface is a pressure-receiving surface, and is supported rotatably around an axis. It includes a stage roller, a drive unit that rotates the stage roller, and a pressure roller that rolls in the axial direction of the stage roller while being in pressure contact with the pressure receiving surface of the stage roller. The present invention is characterized in that development is performed by pressing the material between the stage roller and the pressure roller, and the stage roller is rotated when feeding the photosensitive material.

Therefore, according to the developing device of the present invention, the roller, which is one component of the pressure means for bringing the photosensitive material and the color developer material into pressure contact with each other, moves in a scanning manner with respect to the photosensitive material and the color developer material. Because of this, the shape of the pressurizing means and the pressurizing force required for the pressurizing means can be considerably reduced, making this type of developing device small, lightweight, low cost, and easy to assemble and maintain. It can be made into a simple structure.

Since the stage roller rotates when feeding the photosensitive material or color developer material, there is no friction between the photosensitive material or color developer material and the stage. Because of this, there is no unevenness in the feeding of photosensitive materials, etc., and it is possible to reliably prevent development unevenness caused by uneven feeding, ensuring clean development at all times. This can prevent surface wear and paper dust from adhering to the surface.

Furthermore, since the stage, which is one of the pressurizing means, also serves as a feeding means for feeding the photosensitive material, etc., the number of parts can be significantly reduced.

In the above embodiment, a stepping motor is used as the motor for rotating the stage roller, and the stage roller is fixed by electromagnetically locking the motor except when feeding photosensitive materials, etc. By doing so, there is no need to provide a special locking means for locking the stage roller.

However, when carrying out the present invention, a means for locking the stage roller may be specially provided, or a worm gear mechanism may be inserted in the transmission system between the motor and the stage roller. This worm gear mechanism allows the stage roller to be locked more reliably while the rotation of the stage roller is stopped.

In the above embodiment, two rollers were arranged in the direction of movement, but by doing so, the same location on the photosensitive material or color developing material can be pressed twice by moving the roller once. , the pressure effect by the roller can be further enhanced.

However, when carrying out the present invention, the number of pressure rollers may be one, or three or more may be arranged in the moving direction.

Further, in the present invention, the moving direction of the roller is not limited to the direction perpendicular to the running direction of the photosensitive material and color developing material, but may be a direction oblique to the above running direction. In this case, that is, when the roller is moved in a direction oblique to the feeding direction of the photosensitive material and the color developer material, the scanning direction of the roller is set to the - direction, so that the photosensitive material and the color developer material are moved. The photosensitive material can be continuously fed while being brought into pressure contact with the stage and rollers.

Furthermore, in the above-mentioned embodiments, the present invention is applied by exposing a photosensitive film coated with a photosensitive dye precursor to form a printing film, and by overlaying this printing film with developer paper and applying pressure. Although the above-mentioned image is applied to a printer in which images are developed on the developer paper, the present invention is not limited to such an example of application, and can be applied to a printer in which both a photosensitive dye precursor and a developing substance are provided. A developing device that develops a predetermined image using paper, that is, a developing paper integrated with a photosensitive material developing material, or a copying machine that uses photosensitive printing toner, etc., in which the toner is fixed under pressure on the copying paper. The present invention can be applied to various types of developing devices, such as developing devices for.

[Brief explanation of the drawing]

1 to 7 show an example of an embodiment in which the developing device of the present invention is applied to a pressure-type printer. 3 is a plan view, FIG. 4 is an enlarged sectional view taken along the line IV-IV in FIG. 2, FIG. 5 is an enlarged sectional view taken along the line V-V in FIG. 4, and FIG. FIG. 7 is a circuit diagram; FIG. 8 is a schematic perspective view showing an example of a conventional pressure-type developing device; FIG. 9 is a schematic perspective view showing an example of a prototype developing device. It is a diagram. Explanation of symbols 1... Developing device, 3... Photosensitive material, 4... Color developing material, 11... Stage roller, 12... Pressure receiving section, 12a... Pressure receiving surface, 15...
・Drive part, 66.66'...Pressure roller Applicant: Sony Corporation

Claims (1)

[Scope of Claims] A stage roller including a cylindrical pressure-receiving portion with an outer circumferential surface serving as a pressure-receiving surface and supported rotatably around an axis, a drive portion for rotating the stage roller, and a drive portion for rotating the stage roller; It is equipped with a pressure roller that rolls in the axial direction of the stage roller while being in pressure contact with the pressure-receiving surface, and by applying pressure between the stage roller and the pressure roller, the photosensitive material and the color developing material that are stacked on each other are A developing device characterized in that a stage roller is rotated when developing and feeding a photosensitive material, etc.