JPH01136155A - Developing device - Google Patents

Abstract

PURPOSE:To miniaturize a developing device, to reduce a cost, and also, to execute the development by uniform development density at high speed, and to prevent damage from being generated in developing paper and a photosensitive material by devising the shape of a stage and the position of a pass regulating means of the developing paper positioned before and after said stage. CONSTITUTION:A placing surface 8 on which the developing paper of a stage 7, etc., are placed is formed to a curved surface which has been displaced in the direction where both ends are separated from the developing paper, etc., in case of looking at from the direction intersecting orthgonally with the feeding direction of the developing paper, etc., and with regard to the feeding direction of the developing paper, etc., pass regulating means 9, 10 of the developing paper, etc., positioned immediately before and immediately after the stage 7 are arranged at a position corresponding to the anti-developing paper side from the nearest part 8a to the developing paper, etc., of the placing surface 8 of the stage 7. In such a way, the shape and the pressing force of rolls 55, 55' for bringing a photosensitive material 62 and developing paper 64 to press-contact with each other can be made considerably small, the developing device can be constituted so that it is miniaturized, light in weight and low in cost, and also, a beautiful development whose development density is uniform can be executed. Also, it is prevented that the developing paper and the photosensitive material are damaged by the stage and the edge of the roll.

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 B1 Overview of the invention C9 Prior art a. General background An example of a conventional pressure printer [Fig. 11, 12
Figure] b-1, First example [Figure 11] b-2, Second example [Figure 12] D1 Problems to be solved by the invention [Figures 11 to 1
[Figure 5] E1 Means F for solving the problem, Example [Figures 1 to 10] F-1, First embodiment [Figures 1 to 9] a, Base part, Stage [ Figures 1 to 4, Figures 6 and 8] b, feed roller, FOT, etc. [Figures 1 to 4] C8 movable frame, guide shaft, driven roller [Figures 1 to 4, [Figs. 6 and 7] d, Transfer belt, sensor [Figs. 1 to 4, and 6] e, 9 moving block [Figs. 1 to 6] e-1, Carriage, eaves piece e -2, Roller support arm, pressure roller [Figures 1, 2, 4 to 6] e-2-a, structure e-2-b, support for carriage e-3, pressure Pressure contact and movement of roller to stage f, photosensitive film, color developing paper, etc. [Fig. 1, Fig. 3, Fig. 4, Fig. 6, Fig. 8] g, Print g-1, Operation F-2, Fig. Embodiment 2 [FIG. 10] Effects of the G1 invention (A, industrial application field) 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 paper. This relates to a developing device that causes a predetermined image to appear on the color developer paper by pressing the light-sensitive material and the color developer paper into contact with each other using a pressure means, and is a component of the pressure unit for bringing the photosensitive material and the color developer paper into pressure contact. By devising the shape of the stage and the position of the developer paper bus regulating means located before and after the stage, this type of developing device can be constructed in a small size and at low cost, and it is possible to perform development with uniform developer density at high speed. The object of the present invention is to provide a new developing device that can do this and also prevent damage to developing paper and photosensitive materials.

(B. Summary of the Invention) The developing device of the present invention is a developing device that develops a predetermined image on the color developer paper by pressing a photosensitive material and a color developer paper into contact with each other at a predetermined pressure using a pressure means. A roller is provided that moves in a direction intersecting the running direction of the developer paper while rolling while being in pressure contact with the stage with the developer paper sandwiched therebetween. A bus regulating means is placed above the stage, which is formed on a curved surface whose both ends are displaced in a direction away from the color developer paper, etc. when viewed in a direction perpendicular to the feeding direction of the stage, and which restricts the bus of color developer paper, etc. located before and after the stage. It is located at a location corresponding to the anti-color development paper side from the center of the surface, thereby preventing the photosensitive material and the color development paper from lifting off from the mounting surface of the stage, and furthermore,
It prevents the developing paper and photosensitive material from being damaged by the edges of the stage and rollers, and as a result, this type of developing device can be constructed in a small size and at low cost, and it can still perform clean development without uneven development density. In addition, development can be performed at high speed, and furthermore, the developing paper and the photosensitive material are not damaged.

(C, Prior Art) (a, General Background) Today, there are various types of developing systems for developing a predetermined image on a predetermined color developing paper, one of which is a photosensitive material having a color forming element. There is a system in which a predetermined image is developed on the developer paper by pressing the developer paper and the developer paper against each other, and such a developing system is used in a pressure-type printer or a pressure-fixing type copying machine. There is.

For example, the above-mentioned pressure-type printer encloses a dye precursor material that develops color by combining with a predetermined developing material in an extremely small capsule that becomes pressure-resistant and non-destructive when exposed to a predetermined light. A photosensitive film coated with a dye precursor comprising: A film is formed, and by placing the photosensitive film in this state on developer paper coated with a prescribed developing substance and applying pressure, the unexposed capsules are destroyed and the dye precursors inside the capsules are exposed. The image is transferred to colored paper, so that a predetermined image appears on the color developing paper.

(b. An example of a conventional pressure printer) [Figures 11 and 12] Figures 11 and 12 schematically show different examples a and b of a conventional pressure printer, C is a long photosensitive film, and d is a sheet-type developer paper.

(b-t, first example) [Fig. 11] In Fig. 11, e and f are approximately cylindrical pressure rollers with a length slightly longer than the width of the color developing paper d, and the lower side The pressure roller e is rotatably supported by a support frame (not shown) and rotated by a motor, and the upper pressure roller f
is rotatably supported by a pressure frame (not shown) which is pressed downward by a strong elastic member and is in pressure contact with a lower pressure roller, and the photosensitive film C and the color developer paper d are After being exposed to a predetermined amount of light, they are superimposed on each other and are supplied between pressure rollers e and f.

When the lower pressure roller f rotates, the upper pressure roller e that is in pressure contact with it also rotates, so that the photosensitive film C and the color developer paper d are moved while being pressed against each other, and due to this pressure contact, , the unexposed capsule of the dye precursor in the photosensitive film C is destroyed and the dye precursor encapsulated therein is transferred to the developer paper d, whereby the dye precursor is developed on the developer paper and developed. A predetermined image will be printed on colored paper.

(b-2, 2nd example) [Fig. 12] In Fig. 12, g is a stage, h is a spherical ball contact l rotatably supported on the lower four parts, and the ball contact i is This is a presser that is moved back and forth over a distance slightly longer than the width of the color developing paper d while being in pressure contact with the upper surface of the stage g.

Therefore, the photosensitive film C and the color developer paper d are supplied onto the stage g in a superimposed state and are run intermittently at a constant pitch.
While the color developer paper d is stopped, the photosensitive form C and the color developer paper d move between both ends of their movement range, and as a result, the photosensitive form C and the color developer paper d form a line-shaped area (hereinafter referred to as " (referred to as "press area") are sequentially pressed and a predetermined image is printed on the color developing paper d.

(D. Problems to be Solved by the Invention) [Figures 11 to 15] According to printer a shown in Figure 11, the printing speed is fast because the printing operation can be performed continuously without any breaks. There are advantages.

However, the two upper and lower pressing rollers e%f require extremely large pressure in order to press the entire strip-shaped pressing area extending in the width direction of the photosensitive film C and the color developing paper d at once. For example, if the pressure roller e%f is of a size corresponding to A4-size color developing paper, the pressing force of the pressure rollers e and f will be 1,000 kg to 1.500 kg, and the upper The support frame supporting the pressure roller f is provided with an extremely large pressure source capable of applying such strong pressure, such as a compression spring with an extremely high spring constant.

Therefore, printer a using such pressure rollers e and f 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. Because it is necessary to use a chain or the like for the transmission mechanism that transmits the information to the pressure roller e, the size and weight of the image to be printed are large, the cost is high, and assembly and maintenance are difficult. The problem is that it becomes difficult.

Further, according to the printer b shown in FIG. 12, since the pressurizer serving as the pressurizing means works so as to scan the photosensitive film C and the color developing paper d, the advantage is that the pressurizing force can be very small. There is.

However, since the printing operation is performed by alternating the movement of the presser and the running of the photosensitive film C and developer paper d, there is a problem that the printing speed is slow.

Furthermore, since the contact pressure between the ball contact i of the pressurizer and the stage g is not uniform, there is a problem in that the developed color density becomes uneven. That is, j in FIG. 12(B) shows an example of the pressure distribution curve at the contact portion between the ball contact i and the upper surface of the stage g.As can be clearly seen from this pressure distribution curve j, the ball contact i
The contact pressure between the stage g and the upper surface of the stage g is highest at the center and decreases toward both ends.

Therefore, the pressure in the pressing area of the photosensitive film C and the developing paper d is highest at the center in the width direction and decreases toward both ends, so the amount of capsule destruction of the dye precursor on the photosensitive film C in the pressing area The amount of the dye precursor encapsulated in the capsule transferred to the color developer paper d becomes smaller toward both ends, and the color developer density on the color developer paper d follows the density distribution curve shown in FIG. 12(C), k,・
As shown in..., the center is the darkest and it gets thinner towards the ends. For this reason, if the running pitch of the photosensitive film C and the color developer paper d is set to the same pitch as the contact width W between the ball contact i and the color developer paper d, striped density unevenness will appear.

Therefore, if the photosensitive film C and the color developer paper d are run at a pitch such that the scanning trajectories of the pressure rollers overlap by about half in the width direction, the density distribution curve of FIG.
As shown in .

However, when the photosensitive film C and the color developer paper d are run at such a fine pitch, the printing time is approximately doubled, resulting in a problem that the printing speed becomes extremely slow.

Therefore, in order to reduce the pressing force and widen the pressure area between the photosensitive film C and the color developer paper d in one scan, a roller blade having a substantially disk shape as shown in FIG. 13 was used. We have considered a method in which the photosensitive film C and the developer paper d are held in pressure contact with the stage g and rolled, so that the photosensitive film C and the developer paper d are brought into pressure contact with each other.

According to such a disc-shaped roller L, it is possible to apply pressure to a considerably wider area in one scan, compared to the pressure applied by the ball contact i. Then, when the roller β comes off one side edge of the photosensitive film C and the developer paper d, the photosensitive film C and the developer paper d are fed by a predetermined pitch, and then the roller 1 rides on the photosensitive film C and the developer paper d. It moves toward the other side edge, and when it comes off the other side edge, the photosensitive film C and the color developer paper d are fed by a predetermined pitch, and then the roller 1 rides on the photosensitive film C and the color developer paper d, and one side is moved. It moves towards the side edge of. Pressure development is performed by repeating these operations.

However, in the case of such an apparatus using stage g and roller °C, tension is applied to photosensitive film C and color developing paper d by drive roller m, driven roller n, tension roller 0, and driven roller p arranged before and after stage g. Even if the photosensitive film C and the developer paper d were lifted from the stage surface g' at the center of the stage surface g' (see Fig. 14), the roller L, which had come off the side edges of the photosensitive film C and the developer paper d, was removed. is the photosensitive film C and developer paper d again.
When the roller 1 rides on the photosensitive film C and the developer paper d, the roller 1 gets caught on the photosensitive film C and the developer paper d.
Accidents such as the side edges of the rollers being damaged or the carriage (not shown) supporting the rollers L coming to a halt are common. In order to prevent such an accident, it is sufficient to move the roller °C up and down at a location corresponding to the side edges of the photosensitive film C and the developer paper d, but the photosensitive film C and the developer paper d may float off the stage surface g'. When the roller a descends, the photosensitive film C and the developer paper d are exposed between the time when the photosensitive film C and the developer paper d come into contact with the roller ℃ and the time when the photosensitive film C and the developer paper d are sandwiched between the roller 1 and the stage surface g'. There is a problem in that due to the slight elasticity that it has, a deviation occurs in the contact position with the roller 1, and this appears as a deviation in the developing pitch.

Therefore, the photosensitive film C and the color developer paper d are placed on the stage surface g'
By doing this, the stage surface g of the photosensitive film C or color developing paper d can be
It is possible to prevent the photosensitive film C and the developing paper d from rising from the stage surface g', but this requires extremely high parts precision and assembly precision, which is practically impossible. It is safe to say that there is, and even if photosensitive film C and color developer paper d
Even if such running is possible, there is a risk that the edges of the roller l may damage the photosensitive film C or the color developing paper d.

In order to avoid this, it is conceivable to make the pressure contact surface q of the roller °C into a convex arc shape in the width direction, as shown in Fig. 15, but since the width is narrow, the pressure may be concentrated locally. Therefore, there is a problem that the back surface r of the color developing paper d becomes uneven.

(E. Means for Solving the Problems) Therefore, in order to solve the above-mentioned problems, the developing device of the present invention provides a method in which a predetermined photosensitive material and a color developer paper are sandwiched between the color developer paper and the color developer paper, which are pressed against the stage. A roller is provided which rolls in a direction crossing the running direction, and the photosensitive material and the color developing paper are brought into pressure contact by the roller and the stage.
The mounting surface of the stage on which the color developer paper, etc. is placed is formed into a curved surface with both ends displaced in the direction away from the color developer paper, etc. when viewed in the direction perpendicular to the feeding direction of the color developer paper, etc. A pass regulating means for regulating the pass of colored paper or the like is located at a location corresponding to the anti-color developing paper side from the center of the upper placement surface of the stage.

Therefore, according to the developing device of the present invention, since the roller, which is the pressure means for bringing the photosensitive material and the color developer paper into pressure contact with each other, moves in a scanning manner with respect to the photosensitive material and the color developer paper, the pressure means is The shape and the pressure required for the pressure means can be made considerably smaller, which allows this type of developing device to be made smaller and lighter and at lower cost. Development can be performed. Furthermore, it is possible to prevent the photosensitive material and the photosensitive material from being lifted off the mounting surface of the stage, and furthermore, it is possible to prevent the photosensitive material and the photosensitive material from being damaged by the edges of the stage and rollers.

(F. Embodiment) [FIGS. 1 to 10] Details of the developing device of the present invention will be described below according to the illustrated embodiments.

(F-1, First Example) [Figures 1 to 9] Figures 1 to 9 show a first example in which the developing device of the present invention is applied to a printer that uses a long photosensitive film as a photosensitive material.
Example 1 is shown.

(a, base part, stage) [Figures 1 to 4, 6
2 is a base portion of the printer 1, and includes a bottom plate 3 having a rectangular plate shape, and left and right sides of the bottom plate 3 (the left side in FIG. 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.

In the following description, when directions are indicated, this direction will be used. ) side walls 4 erected upward from both ends;
．． 4', an axial crosspiece 5 that connects the front end of the side wall 4.4' at approximately the midpoint in the vertical direction, and a back plate 6 that connects the rear end of the side wall 4.4'.

A stage 7 is used to press the photosensitive film and developer paper against each other by sandwiching the photosensitive film and the developer paper between the stage and a pressure roller, which will be described later.

The stay shift is made of a metal with relatively high hardness, and is elongated in the left-right direction, and has a substantially oval shape in which the cross-sectional shape perpendicular to the longitudinal direction is elongated in the vertical direction.
Both ends thereof are fixed to approximately the middle portion of the upper end of the side wall 4.4' in the front-rear direction.

Therefore, the upper surface 8 of the stage 7 is formed so that its central portion forms an arcuate surface that is highest when viewed from the left and right directions. Note that the radius of curvature of this arcuate surface may be around 110ll1.

(b, feed roller, FOT, etc.) [Figures 1 to 4] Reference numeral 9 is a feed roller for running the photosensitive film and color developer paper, which will be described later, and is located at a slightly distant position behind the stage 7. A tension roller 10 is disposed at a position slightly below the top surface 8 of the stage 7, and a tension roller 10 is disposed at a position slightly ahead of the stage 7 and slightly below the top surface 8 of the stage 7. .10 is rotatably supported at both ends by the side wall 4.4', and is rotated clockwise in FIG. 4 at a predetermined timing by a drive means (not shown). Then, the feed roller 9 is the tension roller 10.
They rotate slightly more slowly, so that the photosensitive film and the developer paper, which will be described later, are slightly tensioned between these rollers 9,10.

Reference numeral 11 denotes a locking element for locking a movable frame, which will be described later, which is rotatably supported by the base part 2, and whose left and right ends are rotatably supported by the crosspiece 5, and , lock claws 11a, I
la is formed.

Reference numeral 12 denotes a light source (hereinafter referred to as rFOTJ) formed by bundling a large number of optical fibers for exposing a photosensitive film to be described later in a pattern according to a predetermined image signal.This FOT 12 is shown only in FIG. 4. ), and is fixed to the base portion 2 with its light emitting surface 12a facing rearward.

(C, movable frame, guide shaft, driven roller) [Figs. 1 to 4, 6, and 7] Fig. 13 is a movable frame, which has approximately the same size as the side wall 4.4' of the base part 2. and two side plates 14. which are spaced apart in the left-right direction and opposed in parallel.
14' and the upper ends of these side plates 14, 14' are connected to each other, and the lower end of the rear end of the side plates 14, 14' is connected to the side wall of the base part 2 by a support shaft 17, 17.
．． It is rotatably supported at the upper end of the rear end of 4'.

A locked pin 18.18 is protruded from the corner of the inner surface of the side plate 14.14' where the front edge and the lower edge intersect. The pressure roller is the upper surface 8 of the stage 7.
The locking claws 11a and lla of the locking element 11 are engaged with the locked pin 18.18 from above, thereby being locked against the base part 2.

Reference numeral 19.19 denotes a guide shaft having a cylindrical shape elongated in the left-right direction, and is arranged above the stage 7 with a predetermined distance Il1 apart from each other in the front-back direction, and both ends thereof are connected to the side plate 14.
．． 14'.

Reference numerals 20 and 21 are driven rollers that form pairs with the above-mentioned feed roller 9 and tension roller 10, respectively, and support arms 22, 22, 22, 22, 22, 22, 22, 21, 22, 21, 22, 21, 22, 21, 22, 21, 22, 21, 22, 21, 21, 21, 22, 21 are driven rollers that are paired separately with the above-mentioned feed roller 9 and tension roller 10, respectively. The movable frame 13 is rotatably supported at the rotating end of the rollers 9 and 10, and is located at a position corresponding to each of the rollers 9 and 10 from the road. Arm 22.22,・
The rollers 9, 10 are brought into elastic contact with the respective rollers 9, 10 by the elastic force of torsion springs 23, 23, . The torsion springs 23, 23, . . . have coil portions 23 a, 23 a, . . . whose side plates are 14%
14' and rotatably supports the bases of the support arms 22.22, . . . , one of the arms 23b, 23b, . The other arm 23 c, 23 c, ... engages with the upper edge of the measuring plate 14.1 near the rotation end of the measuring plate 14.1.
4' are engaged with the receiving parts 25, 25, . . .
This allows support arms 22.22. A moving force is applied to move the rotating end downward.

(d, transfer belt, sensor) [Figures 1 to 4, and 6] 26 is a motor, and the side plate 1 on the left side of the movable frame 13
The drive pulley 28 is supported by a mounting plate 27 protruding leftward from the rotary shaft 26a, and is oriented so that its axis extends along the up-down direction.

Further, 29 is a driven pulley, and a support plate 30 protrudes toward the right side from the right side plate 14' of the movable frame 13.
It is rotatably supported by a support shaft 31 fixed to.

Incidentally, the driving pulley 28 and the driven pulley 29 are arranged at a slightly higher position than the guide shaft 19, 19.

An endless transfer belt 32 is stretched between the driving pulley 28 and the driven pulley 29.

A carriage of a moving block, which will be described later, is connected to the transfer belt 32, and the motor 26 rotates clockwise in FIG. 3 (hereinafter referred to as "normal rotation") when moving the moving block to the right. ) To move the moving block to the left, rotate it counterclockwise (
Hereafter, it is called ``Gyakuten J''.

33 and 34 are sensors for detecting that the moving block, which will be described later, has reached the end of its moving range;
A pair of light emitting elements 35.35 facing each other with a predetermined interval
and light receiving elements 36 and 36, and these light emitting elements 3
5.35 and the light-receiving screen 36.36 are supported by support pieces 37.37 fixed to both left and right ends of the connecting plate 15, facing each other while being separated from each other in the front-rear direction.

(e, Moving block) [Figures 1 to 6] 38 is a moving block, which includes a carriage supported movably in the left and right direction on the guide shaft 19 and 19, and a carriage rotatably supported by the carriage. It consists of 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.

(e-1, carriage, eaves piece) 39 is a carriage.

40 is a main part of the carriage 39, and the main part 40 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 13.
The front and rear ends of the upper surface are slightly higher than the remaining parts, and two spring placement holes 41, 41 are formed at the center in the front and back direction and are spaced apart from each other in the left and right direction. ing.

Reference numeral 42.42 denotes an arm support piece that protrudes downward from a position sandwiching the spring arrangement hole 41.41 from both front and rear sides of the lower surface of the main portion 40, and the arm support piece 42.4
A support hole 43.43 is formed approximately in the middle of the arm support pieces 42, 42 in the left-right direction of the arm support member 2 in the thickness direction thereof, that is, in the front-rear direction.

Reference numeral 44, 44, 44 denotes an insertion hole that penetrates in the left-right direction approximately the middle portion in the height direction of the main portion 40, and the insertion holes 44, 44, 44 extend across the spring arrangement hole 41, 41. There is.

Reference numerals 45 and 45' 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 45 and 45' in the width direction extend forward and backward from the top surface of the main portion 40 of the carriage 39. It is fixed to the carriage 39 in a protruding position, and has protrusions 46 and 46 on its lower surface.
Further, the front eave piece 45 is integrally formed with a light shielding part 45a projecting upward from its front edge.

47.4F, . . . 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 40 of the carriage, and these four support shafts 47.47, . Guided rollers 48, 48, . . . are rotatably supported on the outer peripheral surfaces of these guided rollers 48, 48, .
a1... is formed.

Then, the carriage 39 is guided by its guided roller 48.4.
The engagement grooves 48a, 48a, . . . of 8, . '
A protrusion 46.46 formed in the main portion faces the guide shaft 19.19 from above at a slight distance, so that the protrusion 46.46 is supported by the guide shaft 19.19 so as to be movable in the left and right direction. A connecting piece 49 fixed to the upper surface of the belt 40 is connected to the feeding belt 32 .

Therefore, the carriage 39 is moved in the left and right direction as the transfer belt 32 runs.

In addition, when the movable frame 13 is locked with respect to the base part 2, the carriage 39 is urged upward by a reaction force generated when a pressure roller, which will be described later, comes into pressure contact with the stage 7, and thereby the guided roller 48,
4B, . . . come into elastic contact with the guide shafts 19, 19 from below to define the position of the carriage 39 in the vertical direction.

(e-2, roller support arm, pressure roller) [Figure 1,
2, 4 to 6] (e-2-a, structure) 50 and 51 are roller support arms.

Reference numerals 50a and 51a are the main parts of the roller support arm 50.51, and support pieces 50b, 50b, 51b face each other in parallel from both front and rear ends thereof.

51b is provided to protrude downward, and these support pieces 5
0b, 50b, 51b, 51b are formed with insertion holes 52.52, . 53 is formed.

Further, the support portion 54 protrudes rightward from the rear half of the right side of the main portion 50a of the left roller support arm 50, and also extends from the front side of the left side of the main portion 51a of the right roller support arm 51. Support part 54 protruding from the road half to the left
are formed integrally with each other, and these support parts 54.
Insertion holes 54a and 54M penetrating through 54 in the front-back direction are formed. In addition, the tip surfaces 5 of these support portions 54, 54
4b and 54b are circular arc surfaces extending in the vertical direction.

55 and 55' are pressure rollers, and these pressure rollers 5
5.55' is about a quarter of the width of the stage 7,
For example, while forming a disk shape with a thickness of about 4 mm,
It is formed of a metal with high hardness, and its outer peripheral surface 55
a, 55'a, the entire area in the width direction is the pressure roller 5.
It is formed on a surface extending parallel to the axis of 5.55'.

Moreover, 56.56 is a support shaft press-fitted into the insertion hole 52.52 formed in the support piece 50b, 50b, 51b, 51b of the roller support arm 50.51, and the pressure roller 55.55 ' is a support hole 55b15 formed in the center of the roller support arms 50, 51, located between the support pieces 50b and 50b and between stb and 51b.
The support shafts 56, 56 are rotatably inserted through the shafts 5'b.

Therefore, the pressure roller 55, 55' is attached to the roller support arm 5.
0.51, and part of it is supported by support pieces 50b, 50b.

51b, projecting downward from the lower ends of 51b.

(e-2-b, Support to the Carriage) The two roller support arms 50 and 51 have their support parts 54 and 51 overlapped in the front and back direction, and most of the roller support arms 50 and 51, except for their lower ends, are attached to the carriage. The insertion holes 54a, 54a are located between the two arm support pieces 42 and 42 provided in the arm support piece 42 and 42, and the support holes 43. 43
A support shaft 57.57 inserted through the is rotatably inserted,
Thereby, it is rotatably supported by the lower end of the carriage 39.

58.58 is a spring bearing shaft having a substantially cylindrical shape, and flanges 58a, 58a are formed near the upper end thereof, and a direction perpendicular to the axial direction is formed at a position slightly downward from the flanges 58a, 58a. The insertion holes 58b, 58b penetrated through the
is formed.

The spring bearing shaft 58.58 is inserted into the spring arrangement hole 41.41 formed in the main portion 40 of the carriage 39 with a slight margin around the spring arrangement hole 41.41, and is inserted into the insertion holes 58b, 58b. Insertion hole 4 formed in main part 40
It is supported by the carriage 39 by being inserted through the support pin 59 press-fitted into 4.44.44, and
Compression springs 60, 60 are compressed between the flanges 58a, 58a of the spring bearing shaft 58, 58 and a recess 53.53 formed in the upper end surface of the main portion 50a151a of the roller support arm 50.51. There is.

Therefore, due to the elastic force of the compression spring 60, 60, the left roller support arm 50 is biased with a rotational force in the counterclockwise direction in FIG. 6, and the right roller support arm 51 is biased in the clockwise direction. The rotational force will be energized.

In addition, the main parts 50a and 51a of the roller support arms 50.51
A portion of a stopper (not shown) is protruded from the opposing surfaces of the main portion 50a when the pressure roller 55, 55' is not pressed relatively upward.
, 51a come into contact with a portion of this stopper, so that rotation of the roller support arms 50, 51 due to the rotational force is prevented at a certain point.

(e-3, Pressing and moving the pressure roller to the stage) The locking of the movable frame 13 to the base portion 2 is performed by moving the movable frame 13 from the state where the pressure roller 55, 55' is in contact with the upper surface 8 of the stage 7. It is done when pushed down slightly.

Therefore, the pressure roller 55, 55' is compressed by the compression spring 60.
, 60, and the carriage 39 is urged upward by the reaction force of this pressure contact, so that the guided roller 4
8.48 comes into elastic contact with the guide shaft 19.19 from below.

Then, as described above, when the transfer belt 32 runs, the carriage 39 is moved in the left-right direction, so the pressure rollers 55, 55' roll while being in pressure contact with the upper surface 8 of the stage 7, and roll along the stage 7. He will be forced to work.

Note that the contact of the pressure roller 55.55' with the upper surface 8 of the stage 7 is on the outer circumferential surface 55a, 5 of the pressure roller 55.55'.
The central portion of 5'a in the width direction faces the top 8a of the upper surface 8 of the stage 7.

When the moving block 38 comes to a position close to the left side plate 14 of the movable frame 13 (hereinafter referred to as "one end position in the moving range"), the light shielding part 45a of the front eaves piece 45 blocks the light emitted from the left sensor 33. The moving block 38 enters between the light emitting element 35 and the light receiving element 36 to block the light emitted from the light emitting element 35 toward the light receiving element 36. (hereinafter referred to as "the other end position in the movement range"), the light shielding part 45a enters between the light emitting element 35 and the light receiving element 36 of the right sensor 34, and the light emitting element 35 moves to the light receiving element 3.
The light irradiated toward the moving block 38 is blocked, thereby detecting that the moving block 38 has reached one end position or the other end position in the moving range.

When the printing operation starts, the motor 26 alternately and intermittently repeats normal rotation and reverse rotation, so that the moving block 3-8 intermittently moves between both ends of its movement range.

(f, photosensitive film, color developing paper, etc.) [Figure 1, Figure 3,
4, 6, and 8] Reference numeral 61 denotes a film cassette (shown only in FIG. 4) in which a long photosensitive film 62 is housed in a wound roll. The film is attached to the rear end of the lower end of the base portion 2 with the axial direction extending along the left-right direction and the film outlet 61a facing upward.

After the photosensitive film 62 is pulled out from the film cassette 61, it is wound around a film guide 63 (shown only in FIG. 4) and extends forward from there. and between the driving roller 9 and the driven roller 20 to be wound onto a take-up spool (not shown), and the light emitted from the FOT 12 is wound at a position between the film cassette 61 and the film guide 63. The upper surface 8 of the stage 7 is in contact with the surface 12a and is between the portion sandwiched between the tension roller 10 and the driven roller 21 and the portion sandwiched between the drive roller 9 and the driven roller 20.
has been contacted.

The photosensitive film 62 is made by coating one side 62a (hereinafter referred to as the "exposed surface") of a suitable film base material with a countless number of photosensitive dye precursors, and the dye precursors are cured by exposure. A dye precursor substance that combines with a specific developing substance to develop a specific color is enclosed within a mold, that is, a microscopic capsule that becomes pressure-resistant and non-destructive when irradiated with ultraviolet light of a specific wavelength. It is made up of

64, 64, . . . are color developer papers on which images are printed, and are formed into a substantially rectangular sheet shape with a width slightly larger than the width of the photosensitive film 62, and one side 6
4a (hereinafter referred to as "development surface") is coated with a developing substance that combines with the dye precursor of the dye precursor to develop a predetermined color.

65 is a paper feed tray in which a large number of the developer papers 64, 64, . . . 64, 64, . . . are supplied one by one between the tension roller 10 and the driven roller 21 at a predetermined timing.

67 is a paper discharge guide plate.

When the moving block 38 reaches both ends of its moving range, its pressure rollers 55 and 55' are positioned away from the side edges of the photosensitive film 62 and developer paper 64 in the width direction.

(g. Print) Therefore, the printing operation by the printer 1 configured as described above is performed as follows, for example.

(g-1, operation) When the print operation start command is issued, the movement block 38
is moved to one end or the other end of its movement range and is kept on standby at that position, and the photosensitive film 62 is run at a constant pitch by the tension roller 101, driven roller 21, drive roller 9, and driven roller 20, and The exposed surface 62a is exposed by the FOT 12 for each predetermined line to form a print film of one image.

Further, at a predetermined timing after or before the formation of the photographic film is completed, a sheet of color developer paper 64 is sent out with its leading edge positioned slightly ahead of the leading edge of the photographic film, and the photosensitive film 64 is fed out. and is superimposed on the stage 7 and supplied onto the stage 7.

Then, when the leading end of the portion of the photosensitive film 62 that has become the printing film reaches the top 8a of the upper surface 8 of the stage 7, or just before that, the motor 26 rotates to move the moving block 38. Therefore, the pressure roller 55.5
5' is rolled in the left and right direction while being pressed against the stage 7 with the developer paper 64 and the photosensitive film 62 in between, that is, the developer paper 64 and the photosensitive film 62 are scanned in the width direction. Developing paper 64 and photosensitive film 62
A predetermined area (hereinafter referred to as a "pressing area") extending in a band-like width direction is pressed against each other by the pressure rollers 55, 55' and the stage 7.

Note that when the moving block 38 reaches one end or the other end of the moving range, the motor 26 stops rotating, and
The developer paper 64 and the photosensitive film 62 are run at a predetermined pitch, that is, a pitch slightly narrower than the width of the pressure contact area, and after this running is completed, the motor 26 is rotated. The film 62 travels and the motor 26 rotates alternately. Regarding the running of the photosensitive film 62 and developer paper 64, the rotational speed of the drive roller 9 is slightly slower than the rotational speed of the tension roller 10, so the photosensitive film 62 and developer paper 64 are kept under tension between them. Therefore, the photosensitive film 62 and the color developing paper 6 are
4 does not rise from the upper surface 8 of the stage 7, especially from the top 8a.

Thus, the pressure rollers 55 and 55' are pressed against the photosensitive film 62.
Each time the developer paper 64 is scanned once in the width direction, the unexposed dye precursor capsules are destroyed by the FOT 12 in the pressed area of the portion of the photosensitive film 62 that is to be used as a printing film, and the dye precursor is released. It is transferred to the developing surface 64a of the developer paper 64 and develops color, and as a result, a part of the predetermined image is printed on the developer paper 64. By repeating such printing, one image is created. This will appear on the color developing paper 64.

Since the pressure rollers 55 and 55' are moved to scan the photosensitive film 62 and the developer paper 64 in the width direction thereof, the pressure applied to the stage 7 is, for example, applied to the photosensitive film 62 and the developer paper 64. 1 for the entire pressure area. Assuming that a pressurizing force of g to i is required for o o o, and g is required for s o o, a force of about 2 to 3 g is sufficient.

Furthermore, even if the pressure rollers 55 and 55' come off the side edges of the photosensitive film 62 and the developer paper 64, the driving roller 9 and the driven roller 20, which are means for regulating the path of the photosensitive film 62 and the developer paper 64, contact area and tension roller 1
0 and the driven roller 21 is located at a lower position than the top 8a of the top surface 8 of the stage 7, and the top surface 8 of the stage 7 is an arcuate surface. The upper surface 8, in particular the pressure roller 55.5
5' does not rise from the top 8a to which it is pressed,
Therefore, the pressure rollers 55, 55' do not damage the photosensitive film 62 or the color developing paper 64, and there is no possibility that the developing pitch will be deviated.

Note that the contact portion between the upper surface 8 of the stage 7 and the pressure roller 55, 55', the roller 9, 10, and the driven roller 20, 21. The optimum value of the step between the pressure roller and the contact part is 55.5
It is related to the width of the color developer paper 5', but if this value β is too small, the edge of the pressure roller 55, 55' tends to scratch and damage the back surface of the developer paper. Also, if this step 1 is too large,
It becomes difficult to load photosensitive film and developer paper,
In addition, when wrapping around the stage, there is a problem such as the developer paper being wrapped tightly due to the large corners, so if the width of the pressure roller is 5 to 6 mm, the edge of the pressure roller and the developer paper It is preferable to select 1 so that there is a gap of about 0.2 to 0.5 mm between the two.

However, if the above-mentioned A has to be made smaller, in order to prevent the edge of the pressure roller 55A from rubbing the back side of the color developing paper, the edge 68 of the pressure roller 55A should be adjusted as shown in FIG. One method is to round or chamfer the .68.

Furthermore, in this embodiment, two pressure rollers 55, 55'
Since the same point is pressurized one after another, it is possible to further reduce the pressurizing force, and the capsules that were not completely destroyed by the first pressurization are completely destroyed by the second pressurization. As a result, density unevenness can be almost completely eliminated. Furthermore, since the pressure applied to one part can be reduced, damage to the photosensitive material or color developing paper can be reduced. That is, it is possible to eliminate these collapses, undulations, damage to the ends, etc.

Although the problem of making the pressing surface of the pressure roller a curved surface has been described above, there is no problem with making the mounting surface of the stage a curved surface. In other words, since the stage can have a wide width in the feeding direction of the photosensitive film or color developer paper, it can be curved with a relatively gentle edge, which reduces the pressure that would occur if the pressing surface of the pressure roller was curved. Local concentration of can be avoided.

(F-2, Second Embodiment) [Figure 10] Figure 10 shows a second embodiment 69 of the developing device of the present invention.

The developing device 69 shown in this second embodiment differs from the printer 1 only in the structure of the stage. Therefore, only the stage and pressure roller are shown in the drawings.

The stage 70 has a cylindrical shape, and its center is rotatably supported by a support shaft 71 supported by a base portion.

And, this stage 70 is a pressure roller 55.55'
During pressurization, a locking means (not shown) locks the film against rotation, and when feeding the photosensitive film 62 and developing paper 64, the locking means is released.

Therefore, in the developing device 69 according to the second embodiment, when the photosensitive film 62 and the color developer paper 64 are fed, the stage 70 rotates as the photosensitive film 62 and the color developer paper 64 move. Friction does not occur between the outer circumferential surface 70a and the photosensitive film 62 or the developing paper 64, and uneven feeding caused by friction between the photosensitive film 62 or the developing paper 64 and the stage can be prevented.

(G. Effects of the Invention) As is clear from the above description, the developing device of the present invention allows the photosensitive material and the developing paper to run on the stage while being in contact with each other, and also to move in a direction intersecting the running direction. A developing device that rolls a roller that presses the photosensitive material and developer paper against the stage, and the mounting surface of the stage on which the developer paper, etc. is placed is perpendicular to the feeding direction of the developer paper, etc. It is a curved surface whose both ends are displaced in the direction away from the color developer paper, etc. when viewed from the direction, and the bus control means of the color developer paper, etc. located immediately before and after the stage with respect to the feeding direction of the color developer paper, etc. is the color developer paper on the upper surface of the stage. It is characterized by being arranged at a position corresponding to the anti-color development paper side from the part closest to the paper.

Therefore, according to the developing device of the present invention, since the roller, which is the pressure means for bringing the photosensitive material and the color developer paper into pressure contact with each other, moves in a scanning manner with respect to the photosensitive material and the color developer paper, the pressure means is The shape and the pressure required for the pressure means can be made considerably smaller, which allows this type of developing device to be made smaller and lighter and at lower cost. Development can be performed. Furthermore, it is possible to prevent the photosensitive material and the photosensitive material from being lifted off the mounting surface of the stage, and furthermore, it is possible to prevent the photosensitive material and the photosensitive material from being damaged by the edges of the stage and rollers.

In the above embodiment, the bus regulating means is the driving roller 9.
Although the tension roller 10 and the driven rollers 20 and 21 are shown, the bus regulating means is not limited to these, and may be of other forms, such as a mere guide roller, for example. Any device that restricts the path of color developer paper or the like may be used.

Further, in the first embodiment, two rollers are arranged in the direction of movement, but if this is done, one roller can be arranged in the direction of movement.
Since the same portion of the photosensitive material or the developing paper can be pressed twice by simply moving the roller twice, the pressing effect of 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 direction of movement.

Further, in the present invention, the direction in which the roller moves is not limited to a direction perpendicular to the running direction of the photosensitive material and the color developing paper, but may be a direction oblique to the running direction.

Furthermore, in the above embodiments, the present invention is applied by exposing a photosensitive film coated with a photosensitive dye precursor to form a printing film, and by overlapping this printing film with developer paper and applying pressure, a predetermined image is formed. Although the present invention is applied to a printer in which an image is developed on the developer paper, the present invention is not limited to such an example of application.
A developing device that develops a predetermined image using a developing paper provided with both a photosensitive dye precursor and a developing substance, that is, a developing paper integrated with a photosensitive material and developing material, or a photosensitive printing toner. The present invention can be applied to various developing devices such as a developing device for fixing the toner under pressure onto copy paper in a copying machine using a copying machine. In other words, these developing devices also fall under the category of developing devices that run a photosensitive material and a developing paper while bringing them into contact with each other on a stage.

[Brief explanation of the drawing]

1 to 9 show a first embodiment in which the developing device of the present invention is applied to a pressure-type printer. The figure is a front view,
Fig. 3 is a plan view, Fig. 4 is an enlarged cross-sectional view taken along line IV-IV in Fig. 2, Fig. 5 is an enlarged perspective view with a part cut away and showing the main parts exploded, and Fig. 6. is an enlarged sectional view taken along the line Vl-Vl in Fig. 1, Fig. 7 is a perspective view of the main part showing the support structure of a part of the path regulating means such as color developer paper, and Fig. 8 is an enlarged view of the main part. FIG. 9 is a side view of the main parts showing a modified example, FIG. 10 is an enlarged side view of the main parts showing the second embodiment of the developing device of the present invention, and FIG. 11 is a conventional pressure FIG. 12 is a schematic perspective view showing an example of a pressure-type developing device, and FIG. 12 is a schematic perspective view showing another example of a conventional pressure-type developing device.
B) is an enlarged side view of the main part, (C) and (D) are diagrams showing different examples of the relative scanning locus of the presser with respect to the color developer paper in terms of color developer density, and Figure 13 is the image of the developer. FIGS. 14 and 15 are enlarged side views of the main parts showing the problems of the device. Explanation of symbols 1... Developing device, 7... Stage, 8... Placement surface, 8a... Portion of placement surface closest to developer paper, etc., 9.10
．． 20.21...Pass regulating means, 55.55'...Skewer roller, 55A...Roller, 62...Photosensitive material, 64.
...Developer paper, 69...Developing device, 70...Stage, 70a...Placement surface Fig. 9 9.10.20.22 - Barrier regulation + f-stop enlarged A law surface view (No. ZL: r) Fruit production 0 Fig. 10 Fig. 12 (B) Revealing diagram (conventional example) Fig. 12 (I5) Main part side view is source side) Fig. 13

Claims (1)

[Claims] A developing device in which a photosensitive material and a developer paper are run on a stage while being in contact with each other, and a roller that moves in a direction intersecting the running direction is rolled with the photosensitive material and developer paper sandwiched between them and in pressure contact with the stage. The loading surface of the stage on which the color developer paper, etc. is placed is a curved surface with both ends displaced in the direction away from the color developer paper, etc. when viewed from the direction perpendicular to the color developer paper, etc. feeding direction, and A developing device characterized in that path regulating means for color developer paper, etc. located immediately before and after the stage are arranged at positions corresponding to the anti-color developer paper side from the part closest to the color developer paper, etc. on the upper placement surface of the stage.