JP2643203B2 - printer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The printer of the present invention will be described according to the following items.

A. Industrial application fields B. Summary of the invention C. Prior art a. General background b. Examples of conventional printers [Figs. 10 and 11] D. Problems to be solved by the invention [Fig. Figures, FIG. 11] E. Means for Solving Problems F. Embodiment [FIGS. 1 to 9] F-1. First Embodiment [FIGS. 1 to 5] a. Base Part, stage [Figs. 1 to 5] b. Feed roller, FOT etc. [Figs. 1 to 4] c. Movable frame, guide shaft, driven roller [Figs. 1 to 5] d. Chain , Presser [Figs. 1 to 5] e. Stopper, sensor [Figs. 2 to 4] f. Moving block [Figs. 1 to 5] f-1. Carriage f-1-a. Structure f-1-b. Movement f-2. Roller support arm, pressure roller, etc. f-3. Pressure contact and movement of pressure roller to stage g. Photosensitive film, color developing paper, etc. [FIGS. 1, 3] Th to fifth
Figure] h. Print F-2. Second embodiment [Fig. 6] a. Pressed piece, presser F-3. Third embodiment [Fig. 7] F-4. Fourth embodiment [FIG. 8] F-5. Fifth Embodiment [FIG. 9] a. Structure b. Operation G. Effects of the Invention (A. Industrial Applications) The present invention relates to a novel printer. Specifically, for example, a printing unit that performs printing by a predetermined printing method such as printing with an ink pen, printing with a heating head, or printing with a pressure roller is provided, and is supported movably in a linear direction by a guide member such as a guide shaft. The present invention relates to a printer that performs printing by reciprocating a moving body with respect to printing paper, and by using a single motor by devising a moving means for moving the moving body, and in a rotational direction of the motor. So that the moving body can be moved back and forth without switching, so that the printing speed of this type of printer can be increased as much as possible, the power consumption can be reduced, and An object of the present invention is to provide a new printer with high operation reliability.

(B. Summary of the Invention) The printer of the present invention is a printer that includes a printing unit that performs printing and that performs printing by reciprocating a movable body that is movably supported by a guide member in a linear direction with respect to printing paper. The presser is fixed to an endless running body driven by a motor, and the presser moves while it is located on one of two running paths between the turning points at both ends of the running body. The forwardly pressed plate of the body is pressed in the forward movement direction, and while being located on the other traveling system path, the backwardly pressed plate of the moving body is pressed in the backward movement direction so that the rotation direction is always one. The moving body can be reciprocated by one motor, which is a direction, so that the printing speed by such a printer can be increased as much as possible and the power consumption is reduced. In which it was to be able to bet.

(C. Conventional technology) (a. General background) Today, there are various types of printers,
There is a printer that includes a printing unit that performs printing and performs printing by reciprocating a moving body that is supported by a guide member so as to be movable in a linear direction with respect to printing paper. For example, in a pen-type printer, a moving body having one or a plurality of ink pens is supported by a predetermined guide member so as to be movable in a linear direction orthogonal to a print paper feed direction, and a moving mechanism using a motor as a driving source. It is configured to print an image or the like on print paper by reciprocating the moving body by
In addition, after exposing a photosensitive film coated with a myriad of photosensitive dye precursors with an exposure pattern corresponding to a predetermined image, pressure is applied in a state where the photosensitive film and a developing paper provided with a predetermined developing material are overlaid. Conventionally, a pressure-type printer that develops an image on a color-developed paper has conventionally required a very long
A method has been adopted in which the photosensitive film and the developing paper are pressed against each other while being fed by two pressure rollers, but in order to reduce the size and weight, the stage and the running direction of the photosensitive film etc. By pressing the photosensitive film and the developing paper in a line with a small pressure roller or a pressure contact such as a ball contact that transfers in the direction that intersects with the pressure roller, and reciprocating the pressure roller while sending the photosensitive film. It has been considered to print an image.

(B. Example of conventional printer) [FIGS. 10 and 11] Accordingly, this type of printer, that is, a moving body having a printing unit such as the ink pen, the pressure roller, or the ball contact described above is printed on a printing paper. The printer which reciprocates with respect to the moving body includes a moving means for supporting the moving body movably in a linear direction by some guide member and for reciprocating the moving body.

FIGS. 10 and 11 schematically show another example a and b of such a conventional printer, where c is a print paper, and d and d are substantially orthogonal to the feed direction of the print paper c. A moving body having a guide shaft e disposed so as to extend in the direction is movably supported by the guide shafts d and d and provided with a printing unit such as a pressure roller (not shown) at a portion facing the printing paper c. It is.

In FIG. 10, f is an endless transfer belt stretched between two belt pulleys g and g ′.
The running path between the turning points at both ends is arranged so as to extend in parallel with the guide shafts d, d, and the connecting member h fixed to the moving body e is connected to the transfer belt f. Reference numeral i denotes a motor for driving the pulley g on the driving side. The rotation of the motor i causes the transfer belt f to travel, so that the moving body e is moved. Therefore, when the motor i is driven by switching its rotation direction each time the moving body e comes to one of the two ends in the moving range, the moving body e
Is reciprocated with respect to the print paper c.

In FIG. 11, j is a screw shaft rotatably supported by a bearing member (not shown) so as to extend in parallel with the guide shafts d and d. Endlessly extending engagement groove k is formed so as to be rotated by the motor l. A moving element e having an engaging projection (not shown) slidably engaged with the engaging groove k is fixed to the moving body e. Accordingly, when the screw shaft j rotates, the engaging protrusion of the driven element m is sent by the engaging groove k of the screw j, whereby the transferred element m is moved in the axial direction of the screw shaft j, When m reaches the turning points at both ends of the engaging groove k, the moving direction is reversed. Thus, the moving body e is reciprocated continuously with respect to the print paper c.

(D. Problems to be solved by the invention) [Fig. 10, Fig. 11
However, according to the printer a shown in FIG. 10, it is necessary to switch the rotation direction of the motor i each time the moving body e comes to both ends of the moving range, that is, to reverse the polarity of the applied voltage. Therefore, it takes a long time to rise at the time of reverse rotation. Therefore, it is difficult to increase the printing speed because the moving speed of the moving body e is delayed by the rising time, and furthermore, a large amount of power is consumed when switching the rotation direction, and the life of the motor is shortened. There is.

Therefore, it is conceivable that the rotation direction of the motor i is always constant by interposing a clutch means for switching the power transmission direction between the motor i and the pulley g. However, when the transmission system of the clutch means is switched, Since the load acting in the opposite phase is applied to the next working transmission type, that is, the inertia of the transfer belt f, the pulleys g and g 'and the moving body e, etc., are applied to the motor i, a large load is applied by the inertia. As a result, when the moving direction of the moving body e is switched, the problem that the torque of the motor decreases and a large amount of power is consumed still remains, and another problem that the driving system becomes complicated occurs. become.

Further, according to the printer b shown in FIG. 11, the rotation direction of the motor l is always one direction, but a considerably large friction loss occurs between the screw shaft j and the engaging projection of the driven element m. Occurs, the efficiency of transmission of the driving force of the motor l to the moving body e is poor, the durability is poor, and the transferee m
There is a risk that the engagement between the engaging projection and the engaging groove k may be dislodged for some reason, and thus there is a problem of lack of reliability. In addition, in order to increase the moving speed of the moving body e, the screw It is sufficient to increase the lead pitch of the engaging groove k. However, there is a certain limit in increasing the lead pitch due to abrasion, motor load, and the like. Therefore, it is difficult to increase the printing speed. There is a problem,
Further, there is also a problem that noise may be generated when the engaging protrusion of the child m hits the engaging groove k at the position where the engaging groove k intersects.

As a means for moving the moving body e, in addition to the means using the transfer belt f and the screw shaft j, a niria motor or other moving means can be considered, but all have the same problems as described above. ing.

(E. Means for Solving the Problems) Accordingly, the printer of the present invention solves the above-mentioned problems in a printer that performs printing by reciprocating a moving body provided with a printing unit in a linear direction with respect to printing paper. In order to achieve this, the forwardly pressed plate and the backwardly pressed plate which are separated from each other in the moving direction are projected from the moving body, and the endless running body driven by the motor and having the pressing element fixed thereto is folded at both ends. The two traveling paths between the points are arranged so as to extend in a direction parallel to the moving direction of the moving body, and when the pressing element is located at one of the two traveling paths of the traveling body, The forwardly pressed plate is pressed and the backwardly pressed plate is pressed when it is located on the other traveling path.

Therefore, according to the printer of the present invention, even if the traveling direction of the traveling body for moving the traveling body is always one direction, the traveling direction of the traveling body is reversed when it comes to a position corresponding to the turning point of the traveling body. Therefore, the moving body can be reciprocated linearly with respect to the print paper by one motor whose rotation direction is always constant. As a result, the motor as a drive source for moving the moving body can be continuously rotated, so that the printing speed can be increased as much as possible, the power consumption can be reduced, and the control circuit can be further reduced. Structure can be simplified, and
Since no problematic wear occurs between the pressed plate of the moving body and the presser, high durability and reliability can be obtained.

(F. Embodiment) [FIGS. 1 to 9] Hereinafter, the printer of the present invention will be described in detail with reference to each of the illustrated embodiments.

(F-1. First Embodiment) [FIGS. 1 to 5] FIGS. 1 to 5 show the printer of the present invention printed using a long photosensitive film and a cut-sheet type color developing paper. 1 shows a first embodiment applied to a pressure-type printer for performing the following.

(A. Base, Stage) [FIGS. 1 to 5] Reference numeral 2 denotes a base of the printer 1, and a bottom plate 3 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. In Fig. 2, the lower side is the front side, the upper side is the rear side, and the upper side in Fig. 2 is the upper side, and the lower side is the lower side. A shaft-like bar 5 and a side wall 4, which connect between the side walls 4, 4 'standing upright from both ends and a substantially middle part in the vertical direction of the front end of the side walls 4, 4',
And a back plate 6 (shown only in FIG. 4) connected between the rear ends of 4 '.

Reference numeral 7 denotes a stage for pressing the photosensitive film and the developed paper together with a pressure roller described below, with the photosensitive film and the developed paper being interposed therebetween.

The stage 7 is formed of a metal having relatively high hardness, is elongated in the left-right direction, and has a cross-sectional shape orthogonal to the longitudinal direction, the upper surface 8 of which has a substantially rectangular shape facing directly upward, and both ends thereof are formed. The upper ends of the side walls 4, 4 'are fixed to a substantially intermediate portion in the front-rear direction.

b. Feed Roller, FOT, etc.) [FIGS. 1 to 4] Reference numeral 9 denotes a feed roller for running a photosensitive film and a color developing paper, which will be described later. The tension roller 10 is disposed at a position slightly lower than the upper surface 8 of the stage 7, and is disposed at a position slightly away from the front of the stage 7 and slightly lower than the upper surface 8 of the stage 7. 10 has both ends rotatably supported by side walls 4 and 4 ', and has a paper feed motor 11 composed of a stepping motor and the like supported on the bottom plate 3 of the base 2 and predetermined speed reduction mechanisms 12 and 13. At the timing shown in FIG. 4, the motor is rotated clockwise in FIG. Then, the feed roller 9 rotates slightly slower than the tension roller 10, whereby the photosensitive film and the color developing paper described later
I'm getting nervous between the ten.

Reference numeral 14 denotes a lock member for locking a movable frame, which will be described later, rotatably supported by the base portion 2 to the base portion 2, and both left and right ends thereof are rotatably supported by the crosspiece 5, and Lock pawls 14a, 14a are formed at the upper ends of both left and right ends.

Reference numeral 15 denotes a light source (hereinafter referred to as "FOT") formed by bundling a number of optical fibers for exposing a photosensitive film described later in a pattern corresponding to an image signal. The FOT 15 is shown only in FIG. ), And is fixed to the base portion 2 with the light emitting surface 15a facing substantially rearward.

(C. Movable Frame, Guide Shaft, and Follower Roller) [FIGS. 1 to 5] Reference numeral 16 denotes a movable frame,
The four side plates 17, 17 'which are substantially the same size as 4' and are spaced apart in the left-right direction and opposed in parallel, and connecting plates 18, 19 (third side) connecting the upper ends of these side plates 17, 17 '. In the figure, the rear connecting plate 19 is omitted.)
The lower end of the rear end of the 7 'is rotatably supported on the upper end of the rear end of the side wall 4, 4' of the base portion 2 by the support shafts 20, 20, and the front edges and the lower ends of the side plates 17, 17 '. The lock claws 14a, 14a of the lock element 14 are engaged with the locked pins 21, 21 projecting inward from the corners where the edges intersect, thereby being locked with respect to the base portion 2. You.

Reference numerals 22 and 22 denote guide shafts each having a columnar shape elongated in the left-right direction. The guide shafts are arranged above the stage 7 at a predetermined distance from each other in the front-rear direction.
It is fixed to 16 side plates 17, 17 '.

Reference numerals 23 and 24 denote driven rollers for testing pairs with the feed roller 9 and the tension roller 10, respectively. Support arms 25, 25 whose both ends are rotatably supported by side plates 17, 17 'of the movable frame 16. ,... Are rotatably supported by the rotating end portions, and are disposed at positions substantially corresponding to the rollers 9 and 10 from above.
Are locked against the rollers 9 and 10 by the resilient force of the torsion springs 26, 26,... Provided on the support arms 25, 25,. .

(D. Chain, Presser) [FIGS. 1 to 5] Reference numeral 27 denotes a motor. The motor 27 is a drive source for reciprocating a moving block, which will be described later, along the guide shafts 22 and 22. The axial direction of the motor 27 extends vertically along the upper surface of the right end of the connecting plate 19 on the rear side of the movable frame 16. The drive-side sprocket wheel 28 is fixed to a portion of the rotating shaft 27a that protrudes downward through a hole (not shown) formed in the connecting plate 19 of the rotating shaft 27a.

Reference numeral 29 denotes a driven sprocket wheel, which is a support shaft projecting downward from the left end of the connecting plate 19.
It is rotatably supported by 30.

Incidentally, these two sprocket wheels 28, 29 are arranged at the same height at a position higher than the guide shafts 22, 22.

Reference numeral 31 denotes an endless chain that is bridged between the two sprocket wheels 28 and 29.
The pair of plates 32, 32, ... and the outer plates 33, 33, ...
・ Alternately arranged and sprocket wheel 2
Rollers 34, 34, ... meshing with 8, 29 are rotatably connected by connecting shafts 35, 35, ... fitted outside,
The axial direction of the connection shafts 35, 35,... Is in the vertical direction.

Therefore, the chain 31 is arranged such that the two turning paths between the turning points at both ends thereof, that is, the positions where the chain 31 meshes with the sprocket wheels 28 and 29 extend in the direction parallel to the guide shafts 22 and 22.

Reference numeral 36 denotes a pressing member having a substantially cylindrical shape, and a shaft 37 protruding along the axial direction from the upper end surface thereof is integrally formed. The upper end of the shaft 37 is connected to the connecting shafts 35, 35,.・ ・ 1
One is formed.

When the motor 27 rotates, the sprocket wheel 28 on the driving side rotates, so that the chain 31 meshing with the sprocket wheel 28 runs, and the pressing element 36 is integrated with the sprocket wheel 28. The pusher 36 is moved in the left-right direction, that is, in a direction parallel to the guide shafts 22 and 22 while it is positioned on the two traveling paths of the chain 31, and the pressing member 36 is folded at both ends of the chain 31. The movement direction is reversed at the point.

The motor 27 normally rotates in the counterclockwise direction in FIG. 3 when a normal printing operation is performed. While the vehicle is located on a front route (hereinafter, referred to as an “outgoing traveling route”), it is moved to the right, and a rear traveling route (hereinafter, a “return traveling route”) is used. While it is on top, it will be moved to the left.

(E. Stopper, sensor) [FIGS. 2 to 4] 38, 38 and 38 ', 38' are stoppers provided at positions near the left end and near the right end of the guide shafts 22, 22, respectively. These stoppers 38, 38 and 38 ', 38' are guide shafts.
This is for restricting the movement of a moving block, which will be described later, which is reciprocated along 22 and 22 within a certain range, and the details are not shown, but the shock is absorbed when the moving block abuts. Alternatively, it is provided with a damper mechanism for relaxing.

39 and 40 are sensors for detecting that a moving block, which will be described later, has reached an end of the moving range and obtaining a signal for controlling the timing between the movement of the moving block and the feeding of the photosensitive film and the developing paper. And a pair of light-emitting elements 41 and 41 and a light-receiving element 42 facing each other at a predetermined interval.
42, these light emitting elements 41, 41 and light receiving element 42,
Reference numeral 42 denotes a facing direction in a state in which the connecting plate 18
Are supported by support pieces 43, 43 fixed to both left and right end portions of the.

(F. Moving Block) [FIGS. 1 to 5] Reference numeral 44 denotes a moving block, which is supported on the guide shafts 22, 22 so as to be movable in the left-right direction, and is rotatably supported by the carriage. It comprises two roller support arms, two pressure rollers rotatably supported by the roller support arms, and a compression spring for constantly urging the roller support arms downward.

(F-1. Carriage) 45 is a carriage.

(F-1-a. Structure) 46 is a main part of the carriage 45, the main part 46 has a substantially square shape when viewed from above, and has a thickness less than half the height of the movable frame 16. It has a block shape, and has two spring arrangement holes 47, 47 penetrating in the height direction at the center in the front-rear direction and spaced from each other in the left-right direction.

48, 48 are the above-mentioned spring arrangement holes 4 in the lower surface of the main portion 46.
Arm support pieces protruding downward from a position sandwiching 7, 47 from both the front and rear sides, and these arm support pieces 48, 48 are arranged in the thickness direction at a substantially intermediate portion in the left-right direction of the arm support pieces 48, 48. That is, the support holes 48 penetrating in the front-rear direction
a, 48a (see FIG. 4) are formed.

Reference numerals 49, 49, and 49 denote insertion holes that pass through a substantially middle portion in the height direction of the main portion 46 in the left-right direction.
9 and 49 extend across the spring arrangement holes 47 and 47.

Reference numeral 50 denotes a light-shielding plate bent substantially in a crank shape when viewed from the left and right.The lower part of the horizontal middle part is fixed to the front surface of the main part 46, and the upper part 50a from the middle part serves as a light-shielding part. ing.

Reference numerals 51, 51 denote bearing mounting holes penetrating the front and rear ends of the main portion 46 in the left-right direction, and cylindrical slide bearings 52, 52 are press-fitted into the mounting holes 51, 51.

The carriage 45 is supported slidably through the bearings 52, 52 so that the guide shafts 22, 22 can move in the left-right direction.

Further, 53 and 54 are pressed portions formed integrally with the main portion 46, and the pressed portions 53 and 54 have a rectangular plate shape, and are formed on the right edge of the upper surface of the main portion 46. It protrudes upward from the position near the front end and from the position near the rear end of the left edge portion so as to face left and right.

In a state where the carriage 45 is supported by the guide shafts 22, 22, the pressed portions 53 and 54 are located at substantially the same height as the presser 36 supported by the chain 31, and the right pressed portion The portion 53 (hereinafter, referred to as “the forward pressed portion”) is located substantially directly below the forward traveling path in the chain 31, and the left pressed portion 54 (hereinafter, the “return pressed portion”). ) Is located substantially directly below the return path of the chain 31. That is, the forward pressed portion 53 is located on the movement trajectory when the presser 36 is positioned on the forward travel path of the chain 31.
It is located on the trajectory of movement when it is located on the 31 return running system road.

(F-1-b. Movement) Then, when the motor 27 rotates, the chain 31 travels, so that the presser 36 is turned at the turning points at both ends of the chain 31, that is, approximately halfway with the sprocket wheel 28 on the driving side. In the system extending in a circular shape and the system extending in a substantially semicircular shape meshing with the sprocket wheel 29 on the driven side, the moving direction is reversed, the forward traveling system is directed to the right, and the returning traveling system is Will be moved to the left, and therefore the pusher
While the carriage 36 is moving on the forward traveling path, the carriage 45 moves to the right along the guide shafts 22 and 22 because it abuts on the forward pressed part 53 of the carriage 45 from the left side and presses it to the right. In addition, while the pressing element 36 is moving on the return travel path, the carriage 45 is moved to the left because it abuts against the returning pressed part 54 from the right side and presses it to the left. become. When the pressing element 36 reaches the turning point on the right side of the chain 31, the pressing element 36 also moves rearward with respect to the outwardly-pressed portion 53 and moves backward from the outwardly-pressed portion 53 (see FIGS. 2 to 4). When the pressing element 36 comes to this position, the rightward pressing of the outwardly-pressed portion 53 is released when the pressing element 36 reaches this position. Immediately after that, the carriage 45 is moved to the right stopper 38 ',
The movement is stopped upon contact with 38 '. That is, in this state, the carriage 45 has reached the right end position in the movement range. Next, the pressing element 36 enters the return travel path while increasing the moving component to the left from the middle position of the turning point, and immediately thereafter, the return movement of the carriage 45 at the right end position is performed. The carriage 45 is pressed to the left by abutting against the pressing portion 54 from the right side, and further, when the pressing element 36 reaches the turning point on the left side of the chain 31, the carriage 45 moves forward with respect to the returning pressed portion 54. Is also moved and comes to a position where it is displaced forward from the return pressed portion 54, the leftward pressing of the return pressed portion 54 is released.
Abuts against the left stoppers 38, 38 to stop the movement. That is, in this state, the carriage 45 has reached the left end position in the movement range. Then, the pressing element 36 enters the forward traveling system path while increasing the moving component to the right at the middle position of the turning point, and immediately thereafter, the forward pressed part of the carriage 45 coming to the left end position. 53
From the left side, and presses the carriage 45 rightward.

Thus, such a movement is repeated, and the carriage 45 is guided by the guide shafts 22 and reciprocates.

(F-2. Roller Support Arm, Pressure Roller, etc.) Reference numerals 55 and 56 denote roller support arms.

Most of the roller support arms 55 and 56 have a substantially U-shape opened downward, and support shafts 57 and 57 are provided at positions near the lower end of the U-shaped portion. Rollers 58, 58 ′ having a substantially disk shape are rotatably supported by 57, 57.

The roller support arms 55 and 56 are arranged in the left and right direction between the arm support pieces 48 and 48 provided on the carriage 45 in the direction that they form when viewed from the left and right, In this state, support pieces 59, 59 protruding from one side of the surfaces facing each other are overlapped in the front-rear direction, and these support pieces 59, 59 are bridged between the arm support pieces 48, 48. It is supported by the carriage 45 by being rotatably supported by the support shaft 60.

A part of the pressure rollers 58 and 58 'is
5, 56 project from the lower end, and also roller support arms 55, 5
Part of 6 protrudes from the lower ends of the arm support pieces 48, 48 of the carriage 45.

61, 61 are spring receiving shafts having a substantially columnar shape, flanges 61a, 61a are formed at positions near the upper end thereof, and directions perpendicular to the axial direction at positions slightly lower than the flanges 61a, 61a. Through holes 61b, 61b are formed.

The spring receiving shafts 61 are connected to the main portion 46 of the carriage 45.
Are inserted into the spring arrangement holes 47, 47 formed therein with a margin around the periphery thereof, and the insertion holes 61
The support pin 62 press-fitted into the insertion holes 49, 49, 49 formed in the main part 46 is inserted into the carriage 45, 61b.
The compression springs 63 are contracted between the flanges 61a, 61a of the spring receiving shafts 61, 61 and the upper end surfaces of the roller support arms 55, 56.

Therefore, by the resilience of the compression springs 63, 63,
The left roller support arm 55 is urged to rotate counterclockwise in FIG. 5, and the right roller support arm 55 is rotated.
56 will be energized clockwise.

A stopper (not shown) is provided on the opposing surfaces of the roller support arms 55 and 56 so as to protrude from each other. When the pressure rollers 58 and 58 'are not pressed upward, the stoppers are used. The rotation of the roller support arms 55 and 56 due to the urging force is stopped at a predetermined position by abutting through the contact.

(F-3. Pressure Contact and Movement of Pressure Roller to Stage) The lock of the movable frame 16 with respect to the base portion 2 is performed by moving the movable frame 16 from a state where the pressure rollers 58 and 58 ′ abut on the upper surface 8 of the stage 7. This is done when you push it down slightly.

Therefore, the pressure rollers 58, 58 'are compressed by the compression springs 63, 63.
Is pressed against the stage 7 by the resilience.

Then, as described above, when the chain 31 runs, the carriage 45 is moved in the left-right direction.
8, 58 'are rolled while being pressed against the upper surface 8 of the stage 7, and are moved along the stage 7.

When the carriage 45 comes to the right end position in the movement range, the light shielding portion 50a of the light shielding plate 50
Between the light emitting element 41 and the light receiving element 42
When the carriage 45 comes to the left end position in the moving range, the light shielding unit 50a is located between the light emitting element 41 and the light receiving element 42 of the left sensor 39. Incoming light emitted from the light emitting element 41 toward the light receiving element 42 will be blocked, whereby
It is detected that the moving block 44 has reached the position of one end or the position of the other end in the moving range.

(G. Photosensitive film, color-developed paper, etc.) [FIGS. 1, 3 to 5] 64 is a film cassette in which a long photosensitive film 65 is stored in a rolled state (FIG. 4). , The axial direction of which extends along the left-right direction,
And the base portion 2 with the film outlet 64a facing upward.
It is attached to the rear end of the lower end.

After the photosensitive film 65 is pulled out of the film cassette 64, the photosensitive film 65 is wound around a film guide 66 (shown only in FIG. 4) and extends forward from the film guide 66. The light-emitting surface 15a of the FOT 15 is disposed between the film cassette 64 and the film guide 66 at a position between the film cassette 64 and the film guide 66. With the feed roller 9
The portion between the portion sandwiched between the tension roller 10 and the driven roller 24 and the portion sandwiched between the tension roller 10 and the driven roller 24 come into contact with the upper surface 8 of the stage 7.

The photosensitive film 65 is provided on one side of an appropriate film substrate.
65a (hereinafter referred to as "exposed surface") is formed by coating an innumerable photosensitive dye precursor, and the dye precursor is exposed to light of an exposure-curable type, that is, ultraviolet light of a predetermined wavelength. In this case, a dye precursor which combines with a predetermined developing substance and forms a predetermined color is enclosed in a very small capsule which produces a pressure-resistant non-destructive property.

.. Are colored paper on which an image is printed, and are formed in a substantially rectangular single-sheet shape having a width slightly larger than the width of the photosensitive film 65, and one surface 67a thereof.
(Hereinafter, referred to as a “developing surface”) is coated with a developing substance which combines with the dye precursor of the dye precursor to form a predetermined color.

Reference numeral 68 denotes a paper feed tray in which a large number of the developed papers 67, 67,... Are stored, and 69 denotes a paper feed roller (these are shown only in FIG. 4). 6
Are supplied between the feed roller 9 and the driven roller 23 at a predetermined timing one by one.

 70 is a paper ejection guide plate.

When the moving block 44 comes to both ends of the moving range, the pressure rollers 58, 58 'are disengaged from the side edges in the width direction of the photosensitive film 65 and the developing paper 67, and the ends of the upper surface 8 on the stage 7 are moved. Located on top.

(H. Printing) The printing operation of the printer 1 configured as described above is performed, for example, as follows.

When a print operation start command is issued, the movement block 44
Is moved to one end or the other end in the movement range, and waits at that position. This control is performed by stopping the driving of the motor 27 when the output from the sensor 39 or 40 is received. Therefore, in this state, the presser 36 is on standby at one of the left and right turning points of the chain 31. Then, the photosensitive film 65 is moved by the feed roller 9, the driven roller 23 and the tension roller 10,
It is driven at a constant pitch by the driven roller 24, and
The exposed surface 65a is exposed by the FOT 15 for every fixed line, and a photographic film of one image is formed.

Further, after or before the formation of the printing film is completed, at a predetermined timing, one sheet of the developing paper 67 is formed.
The sheet is fed out with its leading end located at a position slightly earlier than the leading end of the printing film, and is supplied onto the stage 7 while being superposed on the photosensitive film 65.

When the leading end of the portion of the photosensitive film 65 that has become a printing film reaches a substantially central portion in the width direction of the upper surface 8 of the stage 7, it is detected by a sensor (not shown) and a start signal is output. The motor 27 rotates to move the moving block 44. Accordingly, the pressure rollers 58, 58 'are rolled in the left-right direction while being pressed against the upper surface 8 of the stage 7 with the developed paper 67 and the photosensitive film 65 interposed therebetween, that is, the developed paper 67 and the photosensitive film 65 are moved in the width direction. Thus, a predetermined area (hereinafter, referred to as a “pressing area”) extending in the width direction of the developing paper 67 and the photosensitive film 65 in the width direction is formed by the pressing rollers 58 and 58 ′ and the stage 7.
Are pressed against each other by the upper surface 8.

When the moving block 44 comes to the position of one end or the other end in the moving range, there is an output from the sensor 40 or 39, and the paper feed motor 11 is driven for a certain time (the pressing element 36 (A time shorter than the time for moving the point) The developing paper 67 and the photosensitive film 65 are sent, and
67 and the photosensitive film 65 are run at a predetermined pitch, that is, a pitch slightly narrower than the width of the pressure contact area. Then, when the moving block 44 reaches the other end or one end of the moving range, there is an output from the sensor 39 or 40, and while the pressing element 36 moves the folding point of the chain 31, the developing papers 67 and 65 are fed at a predetermined pitch. Is done.

That is, the motor 27 always keeps rotating counterclockwise,
As a result, the chain 31 runs without interruption and the pressing element 36
Is moved in one direction without a break, but the presser 36
While moving on the turning point 31, the moving block 44 temporarily stops at one end or the other end position in the moving range, so while the moving block 44 stops moving. The photosensitive film 65 and the developing paper 67 are fed.

Thus, each time the pressure rollers 58, 58 'scan the photosensitive film 65 and the developing paper 67 once in the width direction, the photosensitive film 65
FO in the press-contact area of the portion which was set as the photographic film
The capsule of the dye precursor that has not been exposed by T15 is destroyed, and the dye precursor is transferred to the developing surface 67a of the color developing paper 67 to form a color, whereby a part of the image is developed.
, And one such image appears on the color developing paper 67 by repeating such printing.

(F-2. Second Embodiment) [FIG. 6] FIG. 6 shows a second embodiment 71 of the printer of the present invention.

The printer 71 shown in the second embodiment differs from the printer 1 only in the structure of the pressed portion provided on the carriage. Therefore, only the main parts are shown in the drawings, and the description is made only for the above-described differences.
The parts that are not different will be omitted by assigning the same reference numerals to those used in the first embodiment. The use of such reference numerals is the same in the third to fifth embodiments described later.

(A. Pressed Piece, Pressed Element) 72 and 73 are pressed pieces, and when viewed from the front, the right forward pressed piece 72 has a substantially L-shape, and the left returning pressed piece 73 on the left side.
Is an approximately mirror-shaped L-shape, and the width of the chain 31,
That is, a portion that has a length in the front-rear direction slightly longer than the interval between the forward traveling system road and the returning traveling system road, and is directed in the left-right direction.
72a and 73a (hereinafter referred to as "pressed portions") are the chains 31
The horizontal portions 72b, 73b of the carriage 45 are opposed to each other with the cylindrical pressing element 74 supported by
Are fixed to the upper end of the main part 46 by screws 75, 75,....

In addition, the upper end of the pressing element 74 is connected to the connecting shafts 35, 35 of the chain 31,
Are rotatably supported by a lower portion of a shaft 76 which constitutes one of the members. The pressed portions 72a and 73a of the pressed pieces 72 and 73 are slightly spaced from the pressing member 74, that is, the pressing member 74. Are pressed parts 72a, 73a
It is positioned so that it has a minimum required clearance to move the gap back and forth.

Thus, when the chain 31 travels, the pressing element 74 is moved, and while the pressing element 74 is located on the forward traveling system path of the chain 31, the forward pressed part 72a is pressed rightward. To move the moving block 44 to the right.
While is located on the return travel path of the chain 31, the return pressed portion 73a is pressed to the left to move the moving block 44 to the left.

Then, when the presser 74 comes to the right end of the forward traveling system or the left end of the return traveling system of the chain 31, the presser 74 gradually reduces the moving component to the right and gradually increases the moving component to the rear or Since the moving component to the left is gradually decreased and the moving component to the front is gradually increased, the moving speed of the moving block 44 is reduced, and the moving block 44 is moved when the pressing element 74 comes to the middle position of the turning point. The movement stops, and then the moving block 44 is moved in the opposite direction from the position where the pressing element 74 has passed the intermediate position.

That is, according to this example, since the pressed portions 72a and 73a always move integrally with the presser 74 in the left-right direction,
The position of the right end or the left end in the moving range of the moving block 44 is defined by the pressing element 74, and therefore, the position defining such as the stoppers 38, 38, 38 ', 38' shown in the first embodiment. It is not necessary to provide any means, and there is no generation of impact noise when the carriage 45 comes into contact with these stoppers 38, 38, 38 '38', and the moving direction of the moving block 44 can be smoothly reversed. it can.

(F-3. Third Embodiment) [FIG. 7] FIG. 7 shows a third embodiment 77 of the printer of the present invention.
The only difference from the printer 1 shown in the first embodiment is the form of the traveling body supporting the presser.

Reference numerals 78 and 79 denote toothed pulleys having meshing teeth formed on the outer peripheral surface thereof. One of them 78 is fixed to the rotating shaft 27a of the motor 27, and the other 79 is rotatable about the supporting shaft 30 supported by the connecting plate 19. , And an endless timing belt 80 is stretched between the toothed pulleys 78 and 79.

Reference numeral 81 denotes a connecting portion projecting from the outer surface of the timing belt 80, and the upper end of the shaft 37 of the pressing element 36 is inserted and fixed to the connecting portion 81.

Thus, when the motor 27 rotates, the toothed pulley 78 fixed to the rotating shaft 27a of the motor 27 rotates, so that the timing belt 80 runs and the presser 36 is moved integrally therewith, whereby While the pressing element 36 is located on the forward traveling path on the front side of the two traveling paths between the turning points at both ends of the timing belt 80, the forward pressed part 53 of the carriage 45 is pressed to move the moving block 44. Is moved to the right, and while the pressing element 36 is positioned on the returning travel path behind the timing belt 80, the returning pressed part 54 of the carriage 45 is moved.
Is pressed to move the moving block 44 to the left.

(F-4. Fourth Embodiment) [FIG. 8] FIG. 8 shows a fourth embodiment 82 of the printer of the present invention, and this printer 82 is the same as the printer shown in the first embodiment. Printer 71 shown in the first and second embodiments
The only difference is that the portion of the pressing element near one end of the shaft is supported by two chains.

Reference numerals 83 and 83 'denote drive-side sprocket wheels fixed to the rotating shaft 27a of the motor 27, and are arranged slightly apart from each other in the axial direction of the rotating shaft 27a.

Reference numerals 84, 84 'denote driven-side sprocket wheels rotatably supported on the support shaft 30 supported by the connecting plate 19 at a distance from each other in the axial direction thereof. The driven-side sprocket wheels 84, 84' ′ And the drive-side sprocket wheels 83, 83 ′, two endless chains 31,
31 'is spanned. Therefore, when the motor 27 rotates, the two chains 31, 31 'run synchronously with each other.

The upper end and the intermediate part of the shaft 76 supporting the pressing element 74 are separately connected to the two chains 31, 31 '.

Thus, the pressing element 74 is pressed against the pressed pieces 72, 73 of the carriage 45.
Is pressed, a reaction force of the pressing is applied to the shaft 76 supporting the pressing element 74 and the chains 31, 31 'supporting the shaft 76. In this embodiment, the upper end of the shaft 76 Since the part and the intermediate part are supported by the two chains 31, 31 ', the above-mentioned reaction force can be dispersed to the two chains 31, 31', and the shaft 76 can be displaced from the pressed pieces 72, 73. Since it can be prevented from leaning to escape, the pressing element
The transmission efficiency of the moving force of 74 to the carriage 45 can be improved, and the running of the chains 31, 31 'and the moving block 44 can be improved.
Can be smoothly performed.

(F-5. Fifth Embodiment) [FIG. 9] FIG. 9 shows a fifth embodiment 85 of the printer of the present invention. This printer 85 is the same as the printer shown in the first embodiment. The difference from the first embodiment is that the two chains are arranged so as to face each other in parallel from the front and rear with the center portion of the moving block interposed therebetween, and both ends of the shaft of the presser are separately supported by the two chains. Only.

(A. Structure) Reference numerals 86 and 86 'denote rotating shafts, and these rotating shafts 86 and 86' extend in the front-rear direction and are separated in the front-rear direction.
The movable boom 16 is rotatably supported by a support plate (not shown) protruding from the left side plate 17, and sprocket wheels 87, 87 ′ are provided at the ends closer to each other with the moving block 44.
Are fixed separately from each other at a distance slightly shorter than the length in the front-rear direction, and gears 88 and 88 'are fixed to the far end portions of each other.

Reference numeral 89 denotes a drive shaft rotatably supported by a bearing member (not shown) so as to extend in parallel with the rotation shafts 86 and 86 ', and is connected to the rotation shaft of the motor 27 and separately from the gears 88 and 88'. The meshed gears 90, 90 'are fixed.

Reference numerals 91 and 91 'denote support shafts. These support shafts 91 and 91' are also fixed to a support plate (not shown) protruding from the right side plate 17 'of the movable frame 126 in a state of being extended in the front-rear direction and spaced apart in the front-back direction. The sprocket wheels 87, 8
Sprocket wheels 92 and 9 at positions corresponding to 7 '
2 'is rotatably supported.

Then, the sprocket wheels 87, 87 'and 92, 9
Endless chains 31, 31 'are stretched between the endless chains 2' and 2 '.

Therefore, when the motor 27 rotates, the sprocket wheels 87, 87 'rotate synchronously, so that the two chains
31 and 31 'run synchronously.

The motor 27 rotates continuously in a counterclockwise direction when viewed from the front when a normal printing operation is performed. Therefore, when the motor 27 rotates, the two chains 31, 31 'are rotated. Of the two traveling routes between these two turning points, the vehicle travels to the right on the lower outbound traveling route and travels to the left on the upper traveling route. become.

Note that the forward traveling system path is located at a position slightly higher than the upper surface of the carriage 45.

Numeral 93 denotes a shaft in which a substantially cylindrical pressing element 94 is rotatably supported. The shaft 93 extends in the front-rear direction, and both ends thereof are respectively connected to the two chains 31, 31 '.

Reference numerals 95 and 96 denote pressed pieces fixed to the upper surface of the main part 46 of the carriage 45. Pressed parts 95a and 96a opposed to each other in parallel from the left and right are two upper and lower traveling systems of the chains 31, 31 '. The pressing element 94 has a height slightly larger than the distance between the roads, and the pressing element 94 is provided between the pressed parts 95a and 96a.
a and 96a with a slight gap.

(B. Operation) Then, when the chains 31, 31 'run, the presser 94 moves in the left-right direction while reversing its moving direction at the turning points at both ends of the chains 31, 31'. During the movement of the chains 31, 31 'along the forward traveling path, the forwardly pressed portion 95a provided on the carriage 45 is pressed to move the moving block 44 to the right, and the presser 94 is moved by the pusher 94.
While moving along the return travel path of 1 and 31 ', the return pressed part 96a is pressed to move the moving block 44 to the left, thereby moving the moving block 44 to the guide shaft.
It will be reciprocated in the left-right direction along 22,22.

When the pressing element 94 moves along the forward traveling path of the chains 31, 31 ', the pressed elements 95a, 96a
Between the lower ends of the chains 31, 31 'when moving along the return travel path, as shown by the two-dot chain line, between the upper ends of the pressed parts 95a, 96a. During the movement, it is displaced from the height shown by the solid line to the height shown by the two-dot chain line or vice versa.

According to the fifth embodiment, since the shaft 93 supporting the presser 94 is supported by the two chains 31 and 31 'running at the opposite ends thereof, the moving block
Since no rotational moment is generated due to the reaction force of pressing the 44, the transmission efficiency of the moving block 44 of the moving force is good, and the load in the torsional direction is not applied to the chains 31, 31 'and the like. , Smooth operation is performed.

The above-described operation and effect can also be obtained by using two timing belts 80 shown in the third embodiment instead of the chains 31 and 31 '.

(G. Effects of the Invention) As is clear from the above description, the printer of the present invention includes a printing unit for performing printing, and moves a moving body supported movably in a linear direction by a guide member to a printing paper. A printer for performing printing by reciprocating the moving body, comprising: a forwardly pressed plate and a backwardly pressed plate which are separated from each other in a moving direction of the moving body; Endless running body arranged so as to extend in a direction parallel to the moving direction of the moving body, and an outgoing movement of the moving body when fixed to the running body and located at one of the two running paths. A pressing element is provided for pressing the pressing plate and pressing the return pressed plate when the pressing plate is located on the other traveling path.

Therefore, according to the present invention, even if the traveling direction of the traveling body for moving the traveling body is always one direction, the traveling direction of the traveling body is reversed when it comes to a position corresponding to the turning point of the traveling body. The moving body can be reciprocated in a linear direction with respect to the print paper by one motor whose rotation direction is always constant.

As a result, the motor as a drive source for moving the moving body can be continuously rotated, so that the printing speed can be increased as much as possible and the power consumption can be reduced.

Moreover, there is no problematic wear between the pressed plate of the moving body and the pressing element, so that high durability or reliability can be obtained.

In each of the second, fourth and fifth embodiments,
Although the pressing member is always positioned between the two pressed plates of the moving body in a state of being substantially in contact with these pressed plates, in this case, the position of the moving body is always held by the pressing member, It is not necessary to provide stoppers for defining the positions of both ends in the moving range of the moving body, and it is possible to prevent the generation of an impact sound when the moving body collides with the stopper or the like or when the pressing element collides with the pressed plate. Can be
In addition, it is possible to prevent an impact from being applied to the moving body due to the collision.

However, as shown in the first and third embodiments, if the pusher is moved away from the pressed plate of the moving body while moving at the turning point of the traveling body, the pusher changes the moving direction. In this case, there is an advantage that the load received from the moving body can be reduced, so that the load on the motor can be reduced.

Further, in the fifth embodiment, two traveling bodies are arranged in parallel to support both ends of the presser on these two traveling bodies. The force can be sufficiently transmitted to the moving body with a small loss.

In each of the embodiments, the present invention is applied to a pressure-type printer that develops an image on the color developing paper by reciprocating a moving body having a pressure roller with respect to the photosensitive film and the color developing paper. Although shown, the printer of the present invention is not limited to such an application example, and includes a printing unit for performing printing, and by reciprocating a moving body supported movably in a linear direction by a guide member with respect to printing paper. The present invention can be applied to various printers for performing printing, and the type of the traveling body is not limited to the above-described chain or belt, but may be a wire rope or the like.

[Brief description of the drawings]

FIGS. 1 to 5 show a first embodiment in which the printer of the present invention is applied to a pressure printer. FIG. 1 is an enlarged perspective view of a main part shown with a part cut away. Is a front view, FIG. 3 is a plan view, FIG. 4 is an enlarged sectional view taken along line IV-IV in FIG. 2, FIG. 5 is an enlarged sectional view taken along line VV in FIG. 4, and FIG. Is a perspective view of a main part of the second embodiment in which the printer of the present invention is applied to a pressure printer, and FIG. 7 is a perspective view of a third embodiment in which the printer of the present invention is applied to a pressure printer. FIG. 8 is a perspective view of a part of the fourth embodiment in which the printer of the present invention is applied to a pressure printer, and FIG. FIG. 10 is a perspective view of a main part of a fifth embodiment in which the printer of the present invention is applied to a pressure printer, and FIGS. Each Another example of a printer is a schematic perspective view showing a. DESCRIPTION OF SYMBOLS 1 ... Printer, 22 ... Guide member, 31 ... Running body, 36 ... Presser, 44 ... Moving body, 53 ... Outgoing pressed plate, 54 ... Return pressed plate, 58 , 58 '…
... Printing section, 67 ... Printed paper, 71 ... Printer,
72a: Plate to be pushed forward, 73a: Plate to be pushed back, 74: Presser, 77: Printer, 80: Running body, 82: Printer, 31, 31 ': Running body, 85 ... … Printer, 94 ……
Pressing element, 95a: Plate to be pressed forward, 96a: Plate to be pressed back

 ────────────────────────────────────────────────── ─── Continuation of the front page (72) Koji Yui Inventor, Sony Corporation, 6-7-35 Kita Shinagawa, Shinagawa-ku, Tokyo (56) References JP-A-56-127476 (JP, A) JP-A Sho 52-112412 (JP, A) Shokai 61-78639 (JP, U)

Claims (1)

(57) [Claims] 1. A printer for printing by reciprocating a moving body, which is provided with a printing section for performing printing and is movably supported in a linear direction of a guide member, with respect to printing paper, the printing apparatus comprising: An endless end in which a forward pressed plate and a return pressed plate protruding from each other in the moving direction are protruded, and two traveling paths between the turning points at both ends extend in a direction parallel to the moving direction of the moving body. A traveling body which is fixed to the traveling body and presses the forwardly pressed plate when the moving body is located on one of the two traveling paths and returns when the moving body is located on the other traveling path. Characterized in that a presser for pressing the plate to be pressed is provided.