KR0123811B1 - Apparatus to develop an image on a sheet of developing paper - Google Patents

Abstract

No content.

Description

Developing equipment

1 to 7 show an example of an embodiment in which the developing apparatus of the present invention is applied to a pressure printer,

1 is an enlarged perspective view of the main portion shown by cutting a part.

2 is a front view.

3 is a plan view.

4 is an enlarged cross-sectional view taken by IV-IV of FIG. 2;

5 is an enlarged cross-sectional view taken along the line VV of FIG.

6 is an enlarged perspective view showing the main parts in an exploded manner.

7 is a circuit diagram.

8 is a schematic perspective view showing an example of a conventional pressure developing device.

9 is a schematic perspective view showing an example of cyan of a developing apparatus.

* Explanation of symbols for main parts of the drawings

1 developing apparatus 3 photosensitive material

4: color developing material 11: stage roller

12: hydraulic pressure part 12a: hydraulic pressure surface

15: drive part 66, 66 ': pressure roller

The present invention relates to a novel developing apparatus. In detail, the pigment precursor material, which is combined with a predetermined developing material, or the coloring material having its own color development property is an extremely hard capsule of an exposure curing type or an exposure softening type. And a developing device for displaying an image on the color developing material by press-contacting a photosensitive material encapsulated in a predetermined color development material with two pressing members which are pressed against each other, wherein one of the two pressing members is connected to the other pressing member. The photosensitive material and the developer are pressed against each other while the photosensitive material and the developer are pressed against each other, thereby making this type of developing device compact, lightweight, and easy to assemble and repair. It can also be used as a conveying means to reduce the number of parts, and at the same time, to transfer the photosensitive material and the developer It is an object of the present invention to provide a novel developing apparatus in which development unevenness does not occur.

The developing apparatus of the present invention is a developing apparatus which expresses a predetermined image on the developing material by pressing the photosensitive material and the developing material to each other at a predetermined pressure by two pressing members which press-contact each other. The stage can be rotated in a conveying direction such as a material, and the roller is rotated in a direction intersecting the conveying direction while the other side is pressed against the stage. This makes it possible to remarkably reduce the pressure contact force required for the pressing member, thereby making it possible to make this type of developing device compact, lightweight, low cost, and easy to assemble and repair. It can greatly reduce and at the same time prevent friction between them and the stage when transferring photosensitive material and developing color material. The transferred developing unevenness or non-uniformity, such as the photosensitive material due to the friction which will allow the clean-shaped rather caused.

There are various types of developing systems for developing an image on a developing paper, and one of them has a photosensitive material having a color developing element and a predetermined developing material to be pressed against each other so that the image is displayed on the developing material. It is used for this pressure type printer or a pressure fixed type copier.

For example, the pressure type printer includes a pigment precursor formed by encapsulating a pigment precursor material that is formed by compounding with a predetermined developer in an extremely minute capsule in which anti-destructive properties are generated by exposure to predetermined light. Is used as a photosensitive material, and the exposure surface of the photosensitive film is exposed to each pixel in which a predetermined image is decomposed by, for example, ultraviolet light, thereby forming a print film, and at the same time, the photosensitive film in this state. By pressing and superimposing with a developing paper coated with a predetermined developing material, the unexposed capsule is destroyed so that the pigment precursor material in the capsule is transferred to the developing paper, so that a predetermined image appears on the developing paper. It is.

8 schematically shows an example (a) of a conventional pressure printer. In this figure, (b) is a long photosensitive film, and (c) is a single cover color paper.

(d) and (e) are approximately cylindrical rollers having a length slightly longer than the width of the color paper (c), and the lower pressing roller (e) is rotatably supported by a support frame (not shown). In addition, it is rotated by a motor, the upper pressure roller (d) is supported so as to rotate on a pressing frame (not shown) which is pressed downward by a strong elastic member and is pressed against the lower pressure roller (e) The photosensitive film (b) and the color paper (c) are supplied between the pressure rollers (d) and (e) in the state of being superimposed after being exposed to the photosensitive film (b).

Then, when the lower pressure roller (e) rotates, the upper pressure roller (d) pressed against it also rotates at the same time. In this case, the capsules of the non-exposed pigment precursor of the photosensitive film (b) are destroyed by the pressure welding, and the pigment precursor substance enclosed therein is transferred to the colored paper (c). Therefore, the pigment precursor is developed on the color paper (c) so that the image is printed on the color paper.

According to the printer a, the printing speed can be increased because the printing operation can be performed continuously without stopping.

However, the two upper and lower pressure rollers d and e need a very large pressure to press the entire band-shaped contact region extending in the width direction of the photosensitive film b and the color paper c at once. For example, when the pressure rollers (d) and (e) have a size corresponding to the color paper of A4 plate size, the pressing force by the pressure rollers (d) and (e) is required to be 1,000 kg to 1,500 kg. The support frame supporting the upper pressure roller d is provided with a very large pressure source capable of applying such a strong pressure, for example, a compression spring having a very high spring constant.

Therefore, a printer (a) using such pressure rollers (d) and (e) requires a very high mechanical strength at each of its parts, and uses a motor with a large output, or uses a lower pressure roller ( Since it is necessary to use a chain or the like for the transmission mechanism to be transmitted to e), there is a problem that the shape and weight are larger than the size of the image to be printed, and the cost is high and assembly and maintenance are difficult.

Thus, as shown in FIG. 9, the pressing means for pressing the photosensitive film b and the color paper c is rolled in a state in which the stage f fixed to the base portion is pressed against the stage f. It consists of a disk-shaped pressure roller g, and this pressure roller g is sandwiched between the photosensitive film b and the color paper c, and the photosensitive film b was pressed against the stage f. Two sets of paper feed rollers (h), (h), and (i) which are scanned in a direction intersecting with the conveying direction such as and (i), the photosensitive film (b) and the color paper (c) were conveyed by a constant pitch, and the paper development and the press roller g were alternately repeated to perform the pressure development by alternately repeating.

According to such a printer j, the pressing roller g, which is one component of the pressing means, moves to scan the photosensitive film b and the color paper c, so that the pressing force may be very small.

By the way, a paper feed roller (h), (h), (i), (i) for conveying the photosensitive film (b) and the color paper (c) is required, and a support mechanism or a pair of upper and lower sides for supporting them There is a problem that the number of parts is increased because of the need for a carburement means for pressing the paper feed rollers together.

In addition, since the photosensitive film b and the color paper c are conveyed in contact with the stage f, the frictional load between the stage f tends to cause unevenness in the conveyed amount, and unevenness in the conveyed amount. If this occurs, unevenness occurs in the developing concentration of the individual pressure-contacting regions pressurized by the pressure roller g in the photosensitive film b and the color paper c, and thus there is a problem that clean development cannot be performed.

Furthermore, when the photosensitive film (b) and the color paper (c) are in sliding contact with the stage (f), wrinkles are likely to occur on the photosensitive film (b) or the color paper (c), and the photosensitive film (b) or color paper There is also a problem that a large amount of fine powder of (c) is generated and adheres to the surrounding members, which causes the developed image to become dirty or cause a malfunction.

Thus, in order to solve the above problems, the developing apparatus of the present invention has a pressure means for press-contacting the photosensitive material and the developer material with each other so that the outer circumferential surface is provided with a cylindrical pressure-receiving portion having a hydraulic pressure surface and can rotate in the axial rotation direction. A stage roller supported, and a pressure roller which is rolled in the axial direction of the stage roller in a state of being pressed against the pressure receiving surface of the stage roller, wherein the photosensitive material and the developing material stacked on each other are separated between the stage roller and the pressure roller. The stage roller is rotated when the photosensitive material and the like are conveyed by developing at the same time by pressurizing.

Therefore, according to the developing apparatus of the present invention, since the roller which is one component of the pressing means for press-contacting the photosensitive material and the developing material is moved to scan the photosensitive material or the developing material, the shape of the pressing means and the pressing means It is possible to reduce the pressing force required for this reason. This makes this type of developing device compact, lightweight, low cost, and easy to assemble and repair. Since it is carried out by rotating the photosensitive material or color developing material, friction does not occur between them and the stage, and the photosensitive material and the like can be precisely transferred by a predetermined pitch so that unevenness occurs in the transfer of the photosensitive material. It is possible to reliably prevent the occurrence of the phenomenon unevenness caused by this conveyance unevenness, which is always a clean phenomenon. In addition, it is possible to prevent abrasion or adhesion to the hydraulic pressure surface of the stage, and furthermore, since the stage, which is one of the pressing means, serves as a conveying means for conveying photosensitive material, etc. The number can be greatly reduced.

Next, the detail of the developing apparatus of this invention is demonstrated according to the Example which shows.

The embodiment shown in the drawings applies the developing apparatus of the present invention to a printer 1 using a long photosensitive film as a photosensitive material.

First, an example of the photosensitive film and the color paper will be described, and then the printer 1 will be described.

(a) Photosensitive film, color paper (FIGS. 1, 3 to 5)

(2) is a film cassette (shown only in FIG. 4) in which the long photosensitive film 3 is housed in a rolled state.

The photosensitive film 3 is formed by applying a myriad of photosensitive pigment precursors to one surface 3a (hereinafter referred to as an exposure surface) of a suitable film base material. Irradiated with ultraviolet light, the pigment precursor material, which is combined with a predetermined developer and produces a predetermined color, is enclosed in an extremely microcapsules that generate antistatic destructive properties.

(4), (4),... Is a color paper on which an image is printed, and is formed in a substantially rectangular single-sided shape having a width substantially the same as that of the photosensitive film 3, and at one side thereof 4a (hereinafter referred to as a developing surface). Is applied to a dye precursor of the dye precursor to develop a predetermined color.

(b) Printer (FIGS. 1-7)

(b-1) Base part (FIGS. 2-4)

Reference numeral 5 denotes a base portion of the printer 1, and the left and right sides of the bottom plate 6 and the bottom plate 6 are referred to as the left in Fig. 3, and the right foot is referred to as the right. The lower side in the figure is referred to as the front side, the upper side is referred to as the rear side, and the upper side in Fig. 2 is referred to as the upper side, and the lower side is referred to as the lower side. A shaft-shaped frame 8 and sidewalls connected between the sidewalls 7 and 7 ', which are erected upwards at both ends, and approximately intermediate portions in the up and down direction of the front end portions of the sidewalls 7 and 7'. It consists of the back plate 9 which connected between the back ends of (7) and (7 ').

And the bearing 10 is being fixed in the substantially intermediate position in the front-back direction of an upper end part among the outer side surfaces of the left and right side walls 7 and 7 '.

(b-2) stage roller, stage driving unit (FIGS. 1-5)

Numeral 11 denotes a stage roller which press-bonds the photosensitive film 3 and the color paper 4 with each other between the photosensitive film 3 and the color paper 4 between the pressure rollers described later. It is for conveying the photosensitive film 3 and the color paper 4 in cooperation with the paper pressing roller.

The stage roller 11 has a substantially conical hydraulic part 12 which is slightly longer than the width of the color paper 4, and a support shaft 13 protruding along the axial direction from the center of both end faces of the hydraulic part 12, (13) is integrally formed by a metal having a relatively high hardness, and the tip portions 13a and 13a having small diameters of the support shafts 13 and 13 are the side walls 7 of the base portion 5. And (7 ') are rotatably supported by the bearing (10).

Therefore, the stage roller 11 is supported so that the upper end of the base part 2 can rotate in the axial rotation direction in the posture which extends substantially horizontally along the left-right direction.

In addition, the driven gear 14 is fixed to a portion of the two support shafts 13 and 13 that protrudes from the bearing 10 on the right side.

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

15 is a drive unit for rotating the stage roller 11 at a predetermined timing, and a motor 16 fixed to a portion on the right side of the bottom plate 6 rather than the side wall 7 'on the right side, and the motor 16 And an output gear 17 fixed to the rotating shaft 16a of the shaft and an intermediate gear 18 supported to rotate on the side wall 7 ', and the intermediate gear 18 is a stage roller 11. Is engaged with the driven gear 14 and the output gear 17 fixed to the support shaft 13 of the "

For example, a stepping motor is used for the motor 16. When the photosensitive film 3 and the color paper 4 are transferred, the motor 16 is rotated in a clockwise direction in FIG. The electronic lock is made while the photosensitive film 3 is not transferred.

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

Then, the distance between the both end surfaces of the pressure receiving portion 12 of the stage roller 11 and the side walls 7 and 7 'of the base portion 5 is slightly larger than the size of the left and right directions of the moving block described later. It is.

(b-3) FOT, film guide board, etc. (Figure 4)

Reference numeral 19 denotes a light source (hereinafter referred to as FOT) formed by grouping a plurality of optical fibers for exposing a photosensitive film to be described later in a pattern according to a predetermined image signal (hereinafter referred to as FOT), with its light emitting surface 19a facing substantially backwards. It is fixed to the base part 5.

Reference numeral 20 denotes a paper guide plate, 21 a discharge guide plate, and these are sidewalls 7 and 7 'on the left and right sides of the base part 5 at a position slightly lower than the top of the stage roller 11. ), The feed guide plate 20 is in a state where the front end is close to the hydraulic pressure surface 12a of the stage roller 11 from the rear, the discharge guide plate 21 is the rear end of the stage roller 11 It is in the state near the front of the water pressure surface 12a.

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

The film cassette 2 is attached to the rear end of the lower end of the base 5 in a direction in which the axial direction thereof extends along the left and right directions and the film outlet 2a is directed upward.

Then, the photosensitive film 3 is drawn out from the film cassette 2 and then wound around the film guide 22, which extends along the upper surface of the paper feed guide plate 20 and the discharge guide plate 21 toward the front, not shown. It is wound around the winding spool and is in contact with the light emitting surface 19a of the FOT 19 at a position between the film cassette 2 and the film guide 22, and the paper feed guide plate 20 and the discharge guide plate ( The part between 21 and 21 is contacted so that the front and rear ends of this part may be wound on the pressure receiving surface 12a of the stage roller 11 by being pressed by the stage roller 11 by the press roller mentioned later.

(b-4) Movable frame, guide shaft, push roller (FIGS. 1-5)

(b-4-a) movable frame, guide shaft

Reference numeral 23 denotes a movable frame, which is substantially the same size as the side walls 7 and 7 'of the base 5, and also has two side plates 24 and 24 facing each other in parallel in the horizontal direction. ') And the connecting plates 25 and 26 connected between the upper ends of these side plates 24 and 24', and the lower ends of the rear ends of the side plates 24 and 24 'are supported by a support shaft ( 27 and 27 are supported so as to be rotatable at the upper end portions of the rear ends of the side walls 7 and 7 'of the base portion 5.

In addition, the side plates 24 and 24 'have the contact pins 24a and 24'a protruding outward from the front edge thereof, and the pins protruding inward from the corner portions where the front edge and the lower edge intersect ( 28, 28 (shown only on the right side in the drawing) are provided, and the movable frame 23 has the contact portions 24a, 24'a having the side walls 7, (of the base portion 5, ( 7 ') in the state of being in contact with the upper limbs, the lock clicks 29a, (both ends of the lock ruler 29 supported by the frame 8 of the base part 5 on the pyrophyll pins 28, 28) ( 29a) (only the right one is shown in the figure) is locked with respect to the base 5 by being engaged from above.

(30) and (30) are circumferential guide shafts elongated in the left and right directions, and are arranged in a state in which the stage rollers 11 are spaced apart from each other in the front-rear direction, and both ends thereof are movable frames 23. Is fixed to the side plates 24 and 24 '.

(b-4-b) push roller

31 and 32 are press rollers for conveying the photosensitive film 3 and the color paper 4 in cooperation with the stage roller 11, and are approximately the same length as the pressure receiving portion 12 of the stage roller 11. And support arms 33, 33,... Supported at both ends thereof so as to rotate on the side plates 24, 24 ′. It is supported so as to rotate at the rotating end of the hydraulic pressure portion 12, the top portion of the hydraulic pressure portion 12 is arranged to correspond to each other slightly from the top to each other, and arranged separately from the top, the movable frame 23 is locked to the base portion 5 Support arms 33, 33,... Torsion springs (34), (34),. It is made to contact with the hydraulic part 12 of the stage roller 11 by the elasticity force of this.

Torsion springs 34, 34,... Are the coil portions 34a, 34a,... Is fixed to the side plates 24, 24 'and supports arms 33, 33,... It is fitted to the support shaft 35, 35 which supports the base of the rotation so that one arm 34b, 34b,... The supporting arms 33, 33,... Is coupled to the upper limb biased to the rotary end of the arm 34c, 34c,. Receiving parts 36, 36 fixed to the side plates 24, 24 '; To the support arms 33, 33,... The rotary stage is under the force of the moving force to move downward.

Thus, when the stage roller 11 rotates in the paper feed direction, the push rollers 31 and 32 in close contact with this rotate in the counterclockwise rotation in Fig. 4, so that the photosensitive film 3 and The color paper 4 travels by an amount corresponding to the rotation amount of the stage roller 11 because the portion sandwiched by the stage roller 11 and the pressing rollers 31 and 32 is moved toward the right side. At this time, since the portion of the photosensitive film 3 and the color paper 4 wound around the pressure receiving portion 12 of the stage roller 11 moves integrally with the stage roller 11, these photosensitive films 3 And friction does not occur between the colored paper 4 and the stage roller 11.

(b-5) Transfer belt, sensor (FIGS. 1-5)

Reference numeral 37 is a motor, supported by an attachment plate 38 protruding toward the left side from the side plate 24 on the left side of the movable frame 23, the axial direction thereof being in the up and down direction, and driven by the rotary shaft 37a. The pulley 39 is fixed.

In addition, 40 is a driven pulley and is rotatably supported by the support shaft 42 fixed to the support plate 41 protruding toward the right side from the side plate 24 'on the right side of the movable frame 23.

The driving pulley 39 and the driven pulley 40 are disposed at a position slightly higher than the guide shafts 30 and 30.

And the endless transfer belt 43 hangs between these drive pulleys 39 and the driven pulley 40. As shown in FIG.

In addition, a carriage of a moving block, which will be described later, is connected to the conveying belt 43, and the motor 37 rotates clockwise in FIG. 3 when moving the moving block to the right (hereinafter referred to as forward rotation). When the moving block is moved to the left side, it is rotated counterclockwise (hereinafter referred to as reverse rotation).

(44) and (45) are sensors for detecting that a moving block, which will be described later, is at the end of the moving range, and has a pair of light emitting elements 46, 46 and a light receiving element facing each other at a predetermined interval. (47) and (47), and these light emitting elements 46, 46, and light receiving elements 47, 47 are left and right of the connecting plate 25 in opposite directions while being separated in the front-rear direction. It is supported by the support pieces 48 and 48 fixed to both ends.

49 and 49 'are stoppers fixed to the inner side surfaces of the side plates 24 and 24'.

(b-6) Moving block (FIGS. 1-6)

50 is a moving block, a carriage supported to move left and right on the guide shafts 30 and 30, two roller support arms supported to rotate on the carriage, and a rotation of the roller support arms. It consists of two pressing rollers and roller support arms which are supported so that they can always be pushed downwards.

(b-6-a) carriage, flap

51 is a carriage.

Reference numeral 52 is a main portion of the carriage 51, and the main portion 52 has a substantially square shape when viewed from above, and forms a block shape having a thickness about half the height of the movable frame 23. At the same time, the front and rear ends of the upper surface thereof are slightly higher than the rest of the rest, and two spring arrangement balls 53 and 53 which penetrate in the height direction at the center portion in the front and rear direction are formed at intervals in the left and right directions. have.

(54) and (54) are arm supporting pieces which protrude downward from the position where the spring arrangement holes 53 and 53 are interposed between the front and rear sides of the lower surface of the main part 52, and the arm supporting piece ( 54 and 54, the support holes 54a and 54a which penetrate these arm supporting pieces 54 and 54 in the thickness direction, ie, the front-back direction, are formed in the substantially middle part in the left-right direction of 54, have.

55, 55, 55 are insertion holes penetrating the position of the intermediate part in the height direction of the main part 52 to the left-right direction, and these insertion holes 55, 55, 55 are the same. Extends across the spring arrangement balls 53 and 53.

(56) and (56 ') are long pieces which form a long rectangular shape in the left-right direction as seen from the upper side, and these parts (56) and (56') are the half part in the width direction about the main part of the carriage 51. It is fixed to the carriage 51 while being positioned to protrude back and forth from the upper surface of the 52, and projections 57 and 57 are formed on the lower surface thereof, and the front flap 56 is upward from the front edge thereof. The light shielding portion 56a which protrudes is formed integrally.

58, 58,... Are supporting shafts protruding at two positions spaced apart in the left-right direction among the front and rear surfaces of the main part 52 of the carriage, and these four supporting shafts 58, 58,... Guide rollers (5), (59),. Is rotated so that these guide rollers 59, 59,... Deep engaging grooves 59a, 59a,... Is formed.

The carriage 51 has the guide rollers 59, 59,... Engaging grooves 59a, 59a,. Protruding portions 57 and 57 which are coupled to the guide shafts 30 and 30 provided in the movable frame 23 so as to be electrically driven from below and formed on the pieces 56 and 56 'are guided. By opposing the shafts 30 and 30 with a slight gap therebetween, the connecting pieces are supported so as to be able to move left and right in the direction of the guide shafts 30 and 30, and fixed to the upper surface of the main part 52. 60 is connected to the transfer belt 43.

Therefore, the carriage 51 is moved in the left and right directions by the conveyance belt 43 running.

In the state where the movable frame 23 is locked with respect to the base portion 5, when the pressure roller described later is in contact with the stage 11 from above, the carriage 51 is caused by the reaction force generated by the impact contact. Force upward, whereby the guide rollers 59, 59,... Is in contact with the guide shafts 30 and 30 from below, and the position of the carriage 51 in the up-down direction is defined.

(b-6-b) Roller support arm, pressure roller (FIGS. 1-6)

61 and 62 are roller support arms.

61a, 62b, and 62b are protruded downwards, and the insertion hole which penetrated these in the front-back direction to the substantially center part of these support pieces 61b, 61b, 62b, and 62b. 63, 63,... Are formed, and circular shallow concave portions 64 and 64 are formed on the upper surfaces of the main portions 61a and 62a.

Moreover, the support part 65 which protruded toward the right side from about half of the right side of the right side of the main part 61a of the left roller support arm 61 is the left side of the main part 62a of the right roller support arm 62 further. The support part 65 which protruded toward the left side from about half of the front side is integrally formed, and the insertion hole 65a, 65a which penetrated these support parts 65 and 65 in the front-back direction is formed. Moreover, the front end surfaces 65b and 65b of these support parts 65 and 65 are circular arc surfaces extending in an up-down direction.

(66) and (66 ') are press rollers, and these press rollers (66) and (66') are about one-sixth the thickness of the diameter of the pressure receiving portion (12) of the stage roller (11). It forms a disk with a thickness of about 4 mm and is formed of a metal with high hardness, and the outer peripheral surfaces 66a and 66'a have their entirety in the width direction of the pressure rollers 66, ( 66 ') is formed on the surface extending in parallel with the axis.

In addition, 67 and 67 are insertion holes 63 and 63 formed in the support pieces 61b, 61b, 62b, and 62b of the roller support arms 61 and 62, respectively. … The pressure rollers 66 and 66 'are press-fitted into the support shafts between the support pieces 61b and 61b of the roller support arms 61 and 62 and between 62b and 62b. The support shafts 67 and 67 are inserted into the support holes 66b and 66'b formed at the center thereof so as to rotate.

Therefore, the pressure rollers 66 and 66 'are supported by the roller support arms 61 and 62 so as to be rotatable, and part of the support rollers 61b, 61b, 62b, It protrudes downward from the bottom of 62b.

In addition, the two roller support arms 61 and 62 are two arm support pieces provided in the said carriage 51 with the support parts 65 and 65 superimposed in the front-back direction, and the majority except the lower end part. The support hole 54a which is located between the 54 and 54, and is formed in the arm support pieces 54 and 54 in the insertion holes 65a and 65a formed in the support portions 65 and 65, respectively. ), The support shaft 68 inserted into the 54a is inserted to be rotatable, and thereby is supported to be rotatable to the lower end of the carriage 51.

(69) and (69) are substantially cylindrical spring bearing shafts, and flanges 69a and 69a are formed at a position biased at the upper end, and are slightly biased downward from the flanges 69a and 69a. The insertion holes 69b and 69b which penetrate at the position orthogonal to an axial direction are formed.

The spring bearing shafts 69 and 69 are inserted into the spring batch holes 52 and 53 formed in the main portion 52 of the carriage 51 with a slight margin around them. The support pins 70 press-fitted into the insertion holes 55, 55, and 55 formed in the main portion 52 are inserted into the insertion holes 69b and 69b to be supported by the carriage 51. Concave portions 64 formed on the upper surfaces of the flanges 69a, 69a of the spring bearing shafts 69, 69 and the main parts 61a, 62a of the roller support arms 61, 62; Compression springs 71 and 71 are provided between and 64.

Accordingly, the roller support arm 61 on the left side receives the force of the rotational force in the counterclockwise direction in FIG. 5 by the elastic force of the compression springs 71 and 71, and the roller support arm 62 on the right side. ) Is subjected to the force of rotation in the clockwise direction.

On the opposing surfaces of the main parts 61a and 62a of the roller support arms 61 and 62, a stopper part (not shown) protrudes, and the pressure rollers 66 and 66 'are upwards. In the state where it is not pressed toward, the contact surface of the main parts 61a and 62a and the stopper part come into contact with each other to stop the rotation by the rotational force of the roller support arms 61 and 62 at a constant place. It is supposed to be.

(b-6-c) Pressure welding and movement of the pressure roller to the stage roller

When the movable frame 23 is locked with respect to the base portion 5, the pressure rollers 66 and 66 'are opposed to the axis center of the stage roller 11 at approximately the right above, and the movable block 50 is secondly positioned. When shown in the figure by the dashed-dotted line in the position which contacted the stopper 49 provided in the side plate 24 of the left side of the movable frame 23 (henceforth one position in a movement range), or As shown by the solid line in this figure, when the pressure roller 66 is in the position (hereinafter referred to as the other end in the moving range) in contact with the stopper 49 'provided on the right side plate 24', 66 'is located off the left or right side of the pressure receiving portion 12. FIG.

Then, in the state where the pressure rollers 66 and 66 'are out of the pressure receiving portion 12 of the stage roller 11, the outer peripheral surfaces 66a and 66' of the pressure rollers 66 and 66 '. The lower end of a) is located at a height slightly lower than the top of the hydraulic pressure surface 12a of the hydraulic pressure portion 12.

Therefore, when the moving block 50 is located between the position of one end in the movement range and the position of the other end (hereinafter referred to as a contact section), the pressing rollers 66 and 66 'are the stage rollers ( 11, the roller support arms 61 and 62 are moved upward by the stage roller 11 in response to the elasticity of the compression springs 71 and 71. Will be pressed.

Therefore, when the moving block 50 is located in the contact section, the pressure rollers 66 and 66 'are pressurized by the repulsive force of the compression springs 71 and 71, and thus the pressure receiving portion 12 of the stage roller 11 Is pressed from the top.

And, as described above, when the transport belt 43 is driven, the carriage 51 is moved in the left and right direction, the moving block 50 is moved in the left and right direction, and thus the moving block 50 moves the contact section. While the pressure rollers 66 and 66 'are pressed against the pressure receiving surface 12a of the stage roller 11, and the moving block 50 is positioned at one end or the other end of the moving range. When it comes to the position of the pressure roller (66, 66 ') is to deviate laterally from the pressure receiving surface (12a) of the stage roller (11).

As described above, since both ends 12b and 12b of the pressure receiving surface 12a of the stage roller 11 are arcuately chamfered, the pressure rollers 66 and 66 'are displaced to the upper leg. It is smoothly guided by these chamfering surfaces 12b and 12b, and is put on the hydraulic pressure surface 12a.

In addition, when the moving block 50 is positioned at one end in the moving range, the light shielding portion 56a of the front flap 56 is provided with the light emitting element 46 and the light receiving element 47 of the sensor 44 on the left side. When the light is blocked between the light emitting element 46 and the light receiving element 47 from the light emitting element 46, the light blocking portion 56a is located at the other end of the moving range of the moving block 50. It enters between the light emitting element 46 and the light receiving element 47 of the sensor 45 on the right side to block the light irradiated from the light emitting element 46 toward the light receiving element 47, thereby moving block 50. Is detected at one end position or the other end position in the movement range.

Then, when the print operation is started, the motor 37 repeats the forward and reverse rotations alternately and intermittently, thereby causing the movement block 50 to intermittently move between both ends in the movement range.

(b-7) Feed tray, feed rollers (Fig. 4)

72 denotes the color paper 4, 4,... Is a paper feed roller (these are shown only in FIG. 4), and the color papers 4, 4,... Each of these sheets is supplied between the pressing roller 32 and the stage roller 11 at a predetermined timing.

(b-8) Print (Fig. 7)

Thus, the printing operation by the printer 1 configured as described above is performed as follows, for example.

(b-8-a) Circuit (Fig. 7)

7 is a circuit for controlling the drive of the paper transfer motor 16 and the carriage transfer motor 37 of the printer 1.

74L and 74R are monomultivibrators, the signals from the sensor 44 are input to 74L, and the signals from the sensor 45 are input to 74R, and the sensors 44 and 45 are input. Each time one signal from is inputted, a pulse of a predetermined width is output. Then, the driving time of the paper feed motor 16 is determined by the widths of the pulses output from the monomultivibrators 74L and 74R. This driving time is the time required for conveying the photosensitive film 3 and the color paper 4 by a predetermined pitch.

Reference numeral 75 denotes an OR circuit, and the outputs of the monomultivibrators 74L and 74R are input, and the output is input to the drive circuit 76 of the paper feed motor 16.

The drive circuit 76 is configured to drive the paper feed motor 16 while the pulses are output from the monomultivibrators 74L and 74R.

The sensors 44 and 45 are shielded portions 56a of the flap 56 between the light emitting elements 46 and 46 and the light receiving elements 47 and 47 supported by the carriage 51. The signal 1 is outputted when the light is blocked, and the signal 0 is output when the light emitting elements 46 and 46 and the light receiving elements 47 and 47 are not blocked.

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

Reference numeral 79 denotes a driving circuit for driving the carriage transfer motor 37, and the output of the flip-flop 78 is input, and is rotated forward or reverse by the polarity of the output of the flip-flop 78. That is, each time the output 1 of the OR circuit 77 is input, the flip-flop 78 alternately outputs the positive and negative polarity outputs. When the start / stop signal is input to the flip-flop 78 and the start signal output when the printer 1 enters the printable state is output, the printer 1 outputs the output. If no start signal is input, no output is made.

The output of the OR circuit 75 is also input to the drive circuit 79 of the carriage transfer motor 37. When one signal from the OR circuit 75 is inputted, the motor ( 37) is not driven.

(b-8-b) operation

When the start of the print operation is instructed, the moving block 50 is moved to one end or the other end of the moving range so that its position, that is, the position where the pressure rollers 66 and 66 'do not contact the stage roller 11 At the same time, the photosensitive film 3 is driven by the stage roller 11, the pressing rollers 31 and 32 by a constant pitch, and the exposure surface 3a is driven by the FOT 19. It is exposed every constant line to form a print film of one image.

After the formation of the print film is completed or before the completion of the formation of the print film, one sheet of colored paper 4 is discharged in a state in which the tip thereof is slightly ahead of the tip of the print film, and at the same time, the photosensitive film 3 ) Is supplied to the hydraulic pressure surface 12a of the stage roller 11.

Then, when the tip of the photosensitive film 3 becomes the printing film on the top of the pressure receiving surface 12a of the stage roller 11, it is detected by a sensor (not shown) and the start signal is output and at the same time the motor ( 37 rotates to move the moving block 50. Therefore, the pressure rollers 66, 66 'are raised on the pressure receiving surface 12a of the stage roller 11 and pressed against the pressure receiving surface 12a with the color paper 4 and the photosensitive film 3 interposed therebetween. In this state, the rolled sheet is rolled in the left and right directions, that is, the color paper 4 and the photosensitive film 3 are scanned in the width direction, whereby the predetermined color that extends in the width direction of the color paper 4 and the photosensitive film 3 in a band shape. The areas (hereinafter, referred to as pressure contact areas) are press-contacted with each other by the pressure rollers 66 and 66 'and the pressure receiving surface 12a of the stage roller 11.

Then, when the moving block 41 comes to the position of one end or the other end in the moving range, the pressure rollers 66, 66 'are laterally displaced from the stage roller 11 and at the same time the sensor 44 or 45 There is an output at, and the output polarity of the flip flop 78 is reversed. At the same time, however, the output of the OR circuit 75 is input to the drive circuit 79, so that the carriage transfer motor 37 is stopped. On the other hand, if there is an output from the sensor 44 or 45, a pulse signal having a predetermined width is output from the monomultivibrator 74L or 74R, and the motor 16 rotates for a time determined by this pulse width. By rotating the stage roller 11 in the paper feed direction, the color paper 4 and the photosensitive film 3 are conveyed, whereby the color paper 4 and the photosensitive film 3 have a predetermined pitch. The motor 37 is rotated because it travels at a pitch slightly narrower than the width, and when this travel is completed, the input from the OR circuit 75 to the drive circuit 79 is lost. Then, 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 the photosensitive film 3 and the color paper 4 are first fed a predetermined pitch, and then again. The moving block 50 is moved.

Such traveling of the color paper 4 and the photosensitive film 3 and the movement of the moving block 50 alternately.

Thus, each time the pressure rollers 66 and 66 'scan the photosensitive film 13 and the color paper 4 once in the width direction, the pressure-contacting area of the portion of the photosensitive film 3 made of the print film The capsule of the pigment precursor which is not exposed by the FOT 19 in the film is broken, and the pigment precursor is transferred to the developing surface 4a of the color paper 4 to develop color. It is printed on the color paper 4, and such printing is repeated so that one image appears on the color paper 4.

Then, since the pressure rollers 66 and 66 'are moved to scan the photosensitive film 3 and the color paper 4 in the width direction thereof, the pressing force on the stage roller 11 is, for example, a photosensitive film ( 3) and even when the pressing force of 1,000 kg to 1,500 kg is required for the entire pressing contact area of the color paper 4, the strength is about 2 to 3 kg.

In addition, since the colored paper 4 and the photosensitive film 3 are conveyed by rotating the stage roller 11 on which they are wound, the colored paper 4 and the photosensitive film 3 and the stage roller 11 are rubbed. This does not occur, and therefore, the transfer of the color paper 4 and the photosensitive film 3 is always performed with a high precision at a constant pitch. Thus, since the unevenness occurs in the feed amount of the color paper 4 and the photosensitive film 3, the photosensitive film 3 and the color paper 4 are applied to the stage roller 11, the pressure rollers 66, 66 '. As a result, pressure contact is sequentially performed for each pressure contact area of a predetermined width, which is precisely defined with high accuracy. As a result, the phenomenon is always caused by a constant pressing force, thereby achieving a clean phenomenon in which unevenness occurs in the development concentration.

In this embodiment, since the two pressing rollers 66 and 66 'sequentially press the same positions, the pressing force can be further reduced, and the capsule which has not been completely destroyed by the first press is It is completely destroyed by the pressurization of the 2nd time, and a density nonuniformity can be eliminated substantially completely. Moreover, since the pressure applied to one part at a time can be reduced, the damage to the photosensitive film or the color paper can be reduced. That is, these crushing, wrinkles, damage of an edge part, etc. can be eliminated.

As apparent from the above description, the developing apparatus of the present invention includes a stage roller whose outer peripheral surface is provided with a cylindrical hydraulic pressure portion having a hydraulic pressure surface, and which is supported to rotate in an axial rotation direction, and which rotates the stage roller. It is provided with a drive part and a pressure roller which rotates in the axial direction of the stage roller in a state in which it is pressed against the hydraulic surface of the stage roller, and develops by pressing the photosensitive material and the developer material superposed on each other between the stage roller and the pressure roller. At the same time, the stage roller is rotated when the photosensitive material is transferred.

Therefore, according to the developing device of the present invention, since the roller, which is one component of the pressing means for press-contacting the photosensitive material and the developing color material, moves to scan the photosensitive material or the developing material, the shape of the pressing means and the pressing means The required pressing force can be significantly reduced, whereby this kind of developing apparatus can be made compact, lightweight, low cost, and can be easily assembled or repaired.

Since the stage roller is rotated when the photosensitive material or the developing material is transferred, friction does not occur between the photosensitive material or the developing material and the stage, so that the photosensitive material and the like can be transferred with high accuracy by a predetermined pitch. There is no unevenness in the transfer of photosensitive materials, and it is possible to reliably prevent the occurrence of unevenness caused by the uneven transport, so that it is always possible to perform a clean phenomenon. Moreover, wear or paper powder adheres to the pressure side of the stage. Can be prevented. In addition, since the stage, which is one of the pressing means, also serves as a conveying means for conveying the photosensitive material or the like, the number of parts can be greatly reduced.

In the above embodiment, the stage roller is fixed by electronic locking of the motor except when the photosensitive material is transferred to the motor for rotating the stage roller by using a stepping motor. There is no need to install special locking means.

Above all, in carrying out the present invention, a means for locking the stage roller may be specially provided, or when the worm gear tool is inserted into the transmission system between the motor and the stage roller, the worm gear mechanism is stopped while the rotation of the motor is stopped. By this, the stage roller can be locked more securely.

In the above embodiment, two rollers are arranged in the moving direction. In this case, the same location of the photosensitive material or the developing color material can be pressurized twice by only moving the roller once. It can increase.

Above all, in carrying out the present invention, only one press roller may be used, or three or more press rollers may be arranged in the moving direction.

In addition, in this invention, the moving direction of a roller is not limited to the direction orthogonal to the running direction of the photosensitive material and developing material, but may be a direction which intersects with the said running direction. In this case, that is, when the roller is moved in a direction that intersects the conveying direction of the photosensitive material and the developing material, the scanning direction of the roller is made into one direction, and the photosensitive material and the developing material are pressed by the stage and the roller while the photosensitive material Etc. can be conveyed continuously.

Further, in the above embodiment, the present invention is a printer in which a print film is formed by exposing a photosensitive film coated with a photosensitive pigment precursor to form a print film, and the print film is overlaid with colored paper to press a predetermined image to be developed on the colored paper. Although the present invention has been described, the present invention is not limited to such an application example, and a predetermined image is developed by using a developing paper in which both the photosensitive pigment precursor and the developing material are disposed, that is, a developing paper integrated with the photosensitive material developing material. It is applicable to various developing apparatuses such as a developing apparatus or a developing apparatus for pressure-fixing the toner in a copying paper using a photosensitive toner or the like.

Claims (1)

A stage roller having an outer circumferential surface having a cylindrical pressure receiving portion that is a hydraulic pressure surface, and supported to rotate in an axial rotation direction, a drive unit for rotating the stage roller, and a stage roller in a state of being pressed against the pressure receiving surface of the stage roller. It is provided with a pressure roller that is rotated in the axial direction of, and presses the photosensitive material and the developing material superposed on each other between the stage roller and the pressure roller to perform development and to rotate the stage roller when transferring the photosensitive material. Developing apparatus characterized in that.

Images