JPH03192043A - Printer device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a thermal transfer full color printer device.

Conventional technology In recent years, full-color video printers with excellent resolution and color reproducibility have begun to become popular with the advent of thermal transfer printers.
Increasing rationalization is required.

An example of the above-mentioned conventional thermal transfer video printer will be described below with reference to the drawings.

FIGS. 5 and 6 show the configuration of a conventional thermal transfer video printer.

In these drawings, 1 and 2 are the boards of the printer device,
The board 2 is provided with a cassette insertion slot.

3 is a thermal head, which has an initial position m and a platen roller 6.
(The thermal head 3 and platen roller 6 constitute recording means).

3d is a rotating plate that supports the thermal head 8 at the left end;
A protrusion 3g is provided in the middle to engage with the cam groove 14a and rotate about the shaft 3c. 3e+3f is the seat guide. 4
5 is an image receiving paper, 5 is a sheet coated with yellow, magenta, and cyan dyes, and a platen roller 6 comes into contact with the thermal head 3 via the image receiving paper 4 and the sheet 5. 7 is a capstan roller which operates in conjunction with the pulse motor 13 to move the image receiving paper 4.
send accurately. 38 is a pinch roller which can be pressed against the capstan roller rough through the image receiving paper 4, and moves between the initial position m and the rotating pressing position n of the capstan roller 7 (the capstan roller 7 and the pinch roller 88 (constitutes image receiving paper feeding means). 38d is a rotating plate that supports the pinch roller 38 at its left end, engages with the cam groove 34b at its right end 38e,
It rotates around 38c. 38f is a spring for bringing the pinch roller 38 into contact with the capstan roller 7;

Reference numeral 9 denotes a cassette in which the sheet 5 is wound, and includes the sheet 5, a handle portion 9a, and a lower surface 9b of the cassette.

10 is a reel winding device that transports the sheet 5 while winding it up. 11 is a pressing spring for pressing the thermal head 3 against the platen roller 6; 12 is the main drive device.

The pulse motor 13 is a paper feeding rotation device for rotating the capstan roller 7 and the paper feeding device. 13a is an intermediate gear. The main cam 34 includes cam grooves 34a and 34b, and is rotated by the main drive device 12. Sensor 15 detects image receiving paper 4 . The paper push-up board 36 is centered around the shaft 38c.
Initial position m and position n where image receiving paper 4 presses against paper feeder 18
(The paper push-up plate 36, the paper feeding device 18, the paper feeding roller 19, and the paper feeding driven roller 20 constitute an image-receiving paper takeout/feeding means). Further, the shaft 36e engages with the connecting plate 24, and the left end 36d pushes up the image receiving paper 4. 17 is a paper cassette.

The paper feed device 18 rotates together with the paper feed driven roller 20 due to the rotation of the paper feed roller 19 . The paper feed roller 19 has a shaft 19a and a gear portion 19b at one end. The paper feed driven roller 20 has a shaft 20a. The shaft 21 is the central axis of rotation of the main cam 14, and is coupled to the hollow cam 22 through the substrate 1.2.

The hollow cam 22 has a cam groove 22a.

The protrusion 23a at the center of the follower plate 23 engages with the cam groove 22a, the protrusion 23b at the tip engages with the connecting plate 24, and the shaft 2
Rotates around 3c. The connecting plate 24 engages with the shaft 3E3e of the paper push-up board 36 to control the paper push-up board 36.

The operation of the conventional thermal transfer video printer device configured as described above will be described below.

First, the cassette 9 is inserted and set inside the insertion opening of the board 2. Next, when the main drive device 12 starts operating, the interlocking main cam 84 also rotates counterclockwise about the shaft 21. The hollow cam 22 connected to the shaft 21 also rotates counterclockwise. Next, the cam groove 22
The follower plate 23 engaged with a also rotates clockwise about the shaft 23c. Since the connecting plate 24 is engaged with the protrusion 23b of the follower plate 23 at its right end, it moves to the left and pushes the shaft 38e of the paper pushing plate 36 at its left end. Therefore, the paper push-up board 36
rotates clockwise, rotates from the initial position m to the pressed position n, and the main drive device 12 stops at that position. Meanwhile, the image receiving paper 4 stored in the paper cassette 17 is transferred to the paper push-up plate 36.
is pushed up by the left end 36d and pressed against the paper feeder 18. Next, the paper feed rotation device 13 starts operating, and the intermediate gear 1
3a, the gear portion 19b engaged therewith also rotates counterclockwise. The paper feed roller 18 including the gear portion 19b also starts rotating. The paper feed roller 19 rotates counterclockwise, and the paper feed device 18 is composed of a rubber belt.
It rotates counterclockwise in conjunction with the paper feed driven roller 20. Therefore, the image receiving paper 4 pressed against the lower surface of the paper feeder 18
is moved to the right. And capstan roller 7
and the pinch roller 38, and is sent to the position of the sensor 15. Subsequently, the operation of the main drive device 12 is resumed, and the main cam gear 34 further rotates counterclockwise.
First, the follower plate 23 is rotated counterclockwise by the cam groove 22a, and the image receiving paper 4 is slightly separated from the paper feeder 18.
It will not be transferred.

On the other hand, the rotating plate 38d has a shaft 38 engaged with the cam groove 34b.
Due to the displacement of e, it is rotated counterclockwise about the shaft 38c. Then, the pinch roller 38 moves from the initial position m to n, and the image receiving paper 4 is pinched.

Next, the paper feed rotation device 13 resumes its operation, and the image receiving paper 4 is conveyed rightward while being held between the interlockingly rotating capstan roller 7 and the pinch roller 38, and reaches a predetermined position and stops. Next, the main drive device 12 is reactivated, the main cam 34 also further rotates counterclockwise, and the protrusion 3g of the rotating plate 3d engages with the cam groove 34a, rotating around the rotation center 3c, and the thermal head 3 presses the platen roller 6 from the initial position m through the image receiving paper 4 and the sheet 5
, and is pressed by the pressing spring 11.

In this state, the seat 5 is positioned below the cassette lower surface 9b and is in a running state. Thereafter, the paper feed rotation device 13 starts operating in the opposite direction, and the image receiving paper 4 is transferred to the left by the rotation of the capstan roller 7, and at the same time, the sheet 5 also starts to be transferred to the left by the reel drive device 10. Then, thermal transfer is performed by the thermal head 3.

Problems to be Solved by the Invention However, in the conventional configuration as described above, the drive of the thermal head, pinch roller, and paper pushing plate is controlled remotely, resulting in a complex configuration with a large number of parts and a mechanism. The load also increased and there were issues in maintaining reliability.

In view of the above-mentioned problems, the present invention provides a highly reliable printer device in which the recording means, receiving paper feeding means, and receiving paper taking out/feeding means have a simple configuration.

Means for Solving the Problems In order to solve the above problems, the printer device of the present invention includes a first roller that presses the image receiving paper in the recording means section, and a first support that movably supports the first roller. a second roller for pressing and driving the image receiving paper in the image receiving paper feeding means section, a second support member movably supporting the second roller, and a second roller for pressing and driving the image receiving paper in the image receiving paper feeding means section. The image-receiving paper pressing member is configured to apply a pressing force to the image-receiving paper pressing member, and a main cam is used to press the first roller, the second roller, and the image-receiving paper pressing member.

By arranging the operating main cam near the recording means section, the image receiving paper feeding means section, and the image receiving paper taking out/feeding means section, the first
The first supporting member, the second supporting member, and the receiving paper pressing member are pressed by the upper cam groove of the main cam and the side cam at a position corresponding to the approximate center position of the roller or the second roller or the receiving paper pressing member. do.

Embodiment Hereinafter, a printer device according to an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a plan view showing an outline of the configuration of a printer device according to an embodiment of the present invention, FIG. 2 is a sectional view taken along line XX in FIG. 1, and FIGS. FIG. 3 is an operation explanatory diagram showing an initial position and a pressing position of a platen roller.

In these drawings, 1 and 2 are the boards of the printer device,
The board 2 is provided with a cassette insertion slot.

The thermal head 3 is provided with sheet guides 8e and 3f at both ends and is fixed to the substrate. 4 is a receiving paper, and 5 is a sheet coated with yellow, magenta, and cyan dyes. The platen roller 6 moves between an initial position m and a thermal head pressing position n (the thermal head 3 and the platen roller 6 constitute a recording means).

The rotating plate 6d has the platen roller 6 at one end and an engaging portion 6e that engages with the cam groove 14a of the main cam 14 at the other end, and is rotatable about the shaft 6c. The capstan roller 7 accurately feeds the image receiving paper 4 by the driving force of the pulse motor 13. The pinch roller 8 moves between an initial position m and a pressing position n against the capstan roller 7 (the capstan roller 7 and the pinch roller 8 constitute image receiving paper feeding means). The rotating plate 8d supports the pinch roller 8 at one end, and the other end 8e.
It engages with the cam groove 14b and rotates about the shaft 8c.

The spring 8f is for bringing the pinch roller 8 into contact with the capstan roller 7. The cassette 9a containing the sheet includes the sheet 5, a handle portion 9a, and a lower surface 9b of the cassette.

The reel winding device 10 winds up the sheet 5. The spring 11 presses the platen roller 6 against the thermal head 3. 12 is the main drive device. The paper feed rotation device 13 is for rotating the capstan roller 7 and the paper feed device 18, and uses a pulse motor. 13a is an intermediate gear. The main cam 14 has cam grooves 14 a, 14
b and a cam side surface 14d, and is rotated by the main drive device 12 around a shaft 14c. The sensor 15 is connected to the image receiving paper 4
Detect. The paper push-up plate 16 rotates around a shaft 18c between an initial position m and a position n where the image-receiving paper 4 presses against the paper feeder 18 (paper push-up plate 16, paper feeder 18, and paper feed roller 19).
and the paper feed driven roller 20 constitute an image receiving paper takeout/feeding means). In addition, the right end lee of the paper push-up plate 16 is connected to the main cam 14.
The left end 18d pushes up the image receiving paper 4. 17 is a paper cassette. The paper feed device 18 rotates together with the paper feed driven roller 20 due to the rotation of the paper feed roller 19 . A paper feed roller 19 has a shaft 19a and a gear portion 19b at one end. The paper feed driven roller 20 has a shaft 20a. Reference numeral 25 denotes a bottom plate of the printer device board, on which the main cam 14 is installed.

11- The operation of the printer device of this embodiment configured as described above will be explained.

First, the cassette 9 is inserted and set inside the insertion opening of the board 2. Next, the main drive device 12 starts operating, and the main cam 14 interlocked with it also rotates counterclockwise around the shaft 14c. Then, the cam side surface 14 of the main cam 14
Push the right end 16e of the paper push-up board 16 with d. Therefore, the paper pushing plate 16 rotates clockwise from the initial position m to the pressing position n.
3 and 4), and the main drive device 12 stops at that position. During this time, the image-receiving paper 4 stored in the paper cassette 17 is pushed up by the left end 16d of the paper push-up plate 16 and pressed against the paper feeder 18. Next, the paper feed rotation device 13 starts operating, rotates the intermediate gear 13a, and the gear portion 19b engaged therewith also rotates counterclockwise. The paper feed roller 19 including the gear portion 19b also starts rotating.

The paper feed roller 19 rotates counterclockwise, and the paper feed device 18 made of a rubber belt also rotates counterclockwise in conjunction with the paper feed driven roller 20. Therefore, the image-receiving paper 4 that has come into contact with the lower surface of the 12-paper feeder 18 is transferred to the right. Then, it passes between the capstan roller 7 and the pinch roller 8 and is sent to the sensor 15 position. Subsequently, the operation of the main drive device 12 is resumed, and the main cam 14
further rotates counterclockwise, but since the position of the cam side plate 14d approaches the shaft 14c, the paper pusher plate 16 rotates counterclockwise, and the image receiving paper 4 moves away from the paper feeder 18 a little and is not transferred. become a state. On the other hand, the rotating plate 8d has the cam groove 1
It is rotated by the engaging portion 8e engaged with the shaft 4b, and is rotated clockwise around the shaft 8C. Then, the pinch roller 8 moves from the initial position m to the pressing position n (FIGS. 3 and 4), and the image receiving paper 4 is pinched. Next, the paper feed rotation device 13 resumes operation, and the image receiving paper 4 is held between the capstan roller 7 and the pinch roller 8, which rotate clockwise in conjunction with each other, and is transferred to the right until it reaches a predetermined position and stops. do. Next, the main drive device 12 is reactivated, the main cam 14 is further rotated counterclockwise, and the retaining portion 6e of the rotating plate 6d, which is engaged with the cam groove 14a, is rotated counterclockwise around the shaft 6c. rotated in the direction. Then, the platen roller 8 moves from the initial position m to the pressing position n (FIGS. 3 and 4), and the image receiving paper 4 and the sheet 5 are held between the thermal head 3 and the platen roller 6. In this state, the seat 5 is positioned below the cassette lower surface 9b and is in a running state. After that, the paper feed rotation device 13
starts operating in the opposite direction, and the image receiving paper 4 is transferred to the left by the counterclockwise rotation of the capstan roller 7, and at the same time, the sheet 5 also starts to be transferred to the left by the reel drive device 10. Then, thermal transfer is performed by the thermal head 3.

As described above, according to this embodiment, the main cam is installed horizontally on the bottom plate of the printer board, and the main cam drives the platen roller, the pinch roller, and the receiving paper push-up plate. It becomes a structure and a highly reliable mechanism.

Although the present embodiment has been described using a video printer, the present invention can also be applied to a general printer, and is not limited to a video printer.

Effects of the Invention As described above, the present invention provides a main cam that is disposed near the recording means section, the image receiving paper feeding means section, and the image receiving paper taking out/feeding means section, and the main cam is disposed near the recording means section, the receiving paper feeding section, and the roller of the recording means section or the roller of the image receiving paper feeding section. Alternatively, the present invention provides a video printer with a simple structure and high reliability by arranging the image receiving paper pressing member of the image receiving paper take-out and feeding means section near the center and below.

[Brief explanation of drawings]

FIG. 1 is a plan view showing an outline of the configuration of a printer device according to an embodiment of the present invention, FIG. 2 is a sectional view taken along line XX in FIG. 1, and FIGS. , 5 is a sectional view showing the initial position and the suppressed position of the platen roller, FIG. 5 is a plan view showing an outline of the configuration of a conventional printer device, and FIG. 6 is a sectional view taken along line XX in FIG. 5. 3... Thermal head, 4... Receiving paper, 6...
・Platen roller, 7... Capstan roller,
8...Pinch roller, 14...Main cam, 1
4a, 14b...Cam groove, 14d...Side cam, 15-16...Paper push-up plate, 18...Paper feeder, 18...Paper feed roller, 20...Paper feed driven roller .

Claims (1)

[Claims] A first roller that presses the image receiving paper in the recording means section, a first support member that movably supports the first roller, and a second roller that presses and drives the image receiving paper in the image receiving paper feeding section. a roller, a second supporting member for movably supporting the second roller, a receiving paper pressing member for applying a pressing force to the receiving paper in the receiving paper taking out/feeding means section, and the first roller. and a main cam for pressing a second roller and a receiving paper pressing member, and the main cam is disposed near the recording means section, the receiving paper feeding means section, and the receiving paper taking out/feeding means section. , the first support member, the second support member, and the image-receiving paper pressing member are pressed together at a position corresponding to a substantially central position of the first roller, the second roller, or the image-receiving paper pressing member. A printer device characterized by being driven by a main cam.