JPS6211666A - Color recording apparatus - Google Patents

Abstract

PURPOSE:To enhance the feed accuracy of recording paper and to smooth the feed and delivery thereof, by feeding paper by rotating a drum and alternatively applying opening/closing control to a recording paper delivery path and a recording paper feed path. CONSTITUTION:When recording is started, a paper feed path closing guide member 22 opens a paper feed path, recording paper 2 is fed to a grasping position and a drum 16 is rotated by definite quantity toward a direction H. A spring 18 contracts and a clamp 17 is drawn near to the drum 16 while a grasping part 19 is closed to grasp the recording paper 2. When the drum 16 rotates to the direction H, an ink ribbon 20 also moves to the direction shown by an arrow to start thermal transfer recording. The guide member 22 closes the recording paper feed path simultaneously with the completion of the recording of one color. A platen roller 12 is rotated to a recording return direction and the drum 16 freely rotates to return the recording paper. Then, the next color recording is started. After the recording of all of colors was completed, the drum 16 rotates to the direction shown by an arrow I from the stop position at the completion time of the return of the recording paper and the recording paper grasping part 19 is opened and the platen roller 12 rotates to the recording paper return direction to guide the recording paper to a delivery path 23.

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to a color recording device that sequentially overlays and records a plurality of colors on a page by page basis, and particularly relates to a conveyance path switching system between a recording paper supply path and an ejection path. 0 <Prior Art> Recently, compact and low-cost color hard copy devices have been actively developed, and a transfer type thermal type recording device is the main type of device.

This recording device uses a line-type thermal head to heat an ink film tape to melt the ink and transfer it to recording paper (plain paper), which prints yellow (Y), magenta (M), cyan (C), and even black. (B) etc., the colors are superimposed and recorded for each screen (screen sequential method).

That is, the ink film tape is a roll-shaped tape in which the Y, M, and C (and B) are sequentially arranged side by side, and while the tape is advanced in one direction, the recording paper is moved each time the color changes. The image is then returned to the previous position, and the colors are sequentially recorded on each screen, overlapping each other.

As this type of device, a configuration as shown in FIG. 5 has been proposed.

That is, protrusions 71A and 71B that fit into opening rows 73A and 73B provided along both sides of the recording paper 73 are formed near both ends of the drive roller 71 connected to the drive source via the drive pulley 72. The rotation of the roller 71 moves the recording paper forward or backward.

The recording paper 73 is fed along the way by a paper feed sprocket 74 interlocked with the drive roller 71, and is sent upward from below the drive roller 71 via this sprocket 74.

Then, the ink film tape 76 is pulled out from the supply roll 75 on which the ink film tape 76 is wound, passes along the drive roller 71 below the recording paper 73, and is wound around the take-up roller 77. Ru. This roller 77 on the winding side is connected to a drive motor 78.

In addition, a line-type thermal head 79 is connected to the drive roller 7.
The recording paper 73 on the drive roller 71 is pressed from above the ink film tape 76 during recording, and the ink on the ink film tape 76 is transferred to the paper 73 by appropriately controlling heating.

In such a recording device, as mentioned above, Y, M,
When performing a recording operation by sequentially overlapping colors C (or even B) on each screen, it is necessary to move the recording paper forward and backward three (or four) times, and if the paper feeding accuracy is poor at this time, color misalignment may occur. This was accompanied by the important problem of the occurrence of

That is, for example, in a 10 dot/cod apparatus, the paper feeding accuracy is required to be within ±0.05 saw (color shift) . . . 1 dot for three (or four) repetitions.

However, although the tractor feed system described above is effective against paper skew,
It is difficult to obtain the above-mentioned fine feeding accuracy because the protrusions must be inserted into the holes in the recording paper.

In addition, there are devices that feed the paper using a platen roller separate from the tractor feed, but with this method, the paper tends to skew and slide, causing misalignment, and it is also impossible to achieve the paper feeding precision described above. It was difficult.

<Objective of the Invention> The present invention provides a means for feeding recording paper by the rotation of a rotating drum, and for smoothly supplying the recording paper and ejecting the recording paper after recording when the paper is fed by the rotation, that is, a recording paper ejection path. It is an object of the present invention to provide a color recording device having a switching means for selectively controlling opening and closing of a supply path.

<Embodiment> FIG. 1 is a diagram showing the overall configuration of a color recording apparatus according to the present invention. 1 is a semicircular roller for feeding the recording paper 2 pushed up by a recording paper pushing up spring 4 provided in three recording paper stacking cassettes to recording paper feed rollers 7 and 8. 5 is an upper guide plate for reliably guiding the recording paper taken out by the semicircular roller 1 to the recording paper supply roller 7.8, and 6 is a lower guide plate. Recording paper feed rollers 7 and 8 feed the recording paper 2 to a recording paper supply path 9. 1
0 is a recording paper guide path that shares recording paper supply and discharge; 1
2 is a platen roller that conveys the recording paper 2 by the pressure of the veil roller 11; 13 is a thermal head; the recording paper 2 is interposed between the platen roller 12 and the ink ribbon 20;
Thermal transfer recording is applied to the image. This thermal head 13 is supported by a thermal head support shaft 21, and as the shaft 15 moves in the direction of arrow F, it moves up and down in the direction of arrow G via a support spring 14. The vertical movement controls the attachment and detachment of the thermal head 13 and the platen I2. 20 is a thermal transfer ink ribbon having four colors of ink: yellow, magenta, cyan, and black. 16 is a rotating drum for winding up the recording paper 2; Reference numeral 17 denotes a clamp that holds the recording paper 2 in its mouth and is provided inside the rotating drum and is rotatably supported. 18 is a spring with one end interposed between the rotating drum 16 and the other end interposed between the clamp 17.
7 provides a clamping force when holding the recording paper 2 in its mouth, and 19 is a recording paper gripping portion. Reference numeral 22 denotes a guide member that is moved up and down by a drive source such as a solenoid, prevents the recording paper 2 from moving backward into the recording paper supply path 9, and guides the recording paper 2 to the discharge path 28. 24.25 is discharge path 2
A recording paper ejecting roller 26 is provided at the end of 3, and 26 is a discharging recording paper receiver.

FIG. 2 is a diagram showing the operation flow of the present color recording apparatus.

31: Recording is started by a recording start command. At this time, the thermal head 13 is in a detached state from the platen roller 12, and the recording paper gripping section 19 is in an open state, that is, in a recording paper waiting state. Moreover, the paper feed path closing guide member 22
is in a state where the paper feed path is closed, that is, it is lowered. (Hereinafter, these will be referred to as the "initial state") 32: In response to a recording start command, the semicircular roller 1 rotates in the direction of arrow A, and guides the recording paper 2 loaded in the recording paper loading cassette 3 through the guide plates 5 and 6. As a result, it is supplied to the feed roller sections 7 and 8.

33: The supplied recording paper 2 is sandwiched between the feed rollers 7 and 8, and the arrow B of the feed rollers 7 and 8.

By the rotation of C, the recording paper is sent out to the recording paper supply path 9.

34: The leading edge of the recording paper sent via the recording paper supply path 9 and the recording paper guide path 10 is sandwiched between the bail roller 11 and the platen roller 12, and the platen roller 12 moves it to the gripping section 19. It rotates by the distance.

35: When the leading edge of the recording paper 2 reaches the gripping portion 19 by feeding the recording paper a certain amount by the nib platen roller 12, 36: The platen roller 12 stops (by feeding the recording paper a certain amount) 37: The recording paper 2 is at the gripping position , and the drum 16 rotates a certain amount in the H direction.

38: The spring 18 contracts due to the rotation of the flow 37, and the clamp 17 becomes a drum! 6, the gripping portion 19 closes and the recording paper is held in its mouth.

39: When the recording paper is completely held in the drum I6 by flow 38, the shaft 15 moves in the thermal head pressing direction F and presses against the platen 12 via the spring 14 in order to put the thermal spatula 3 into the recording state. let

40.4+, 42: Due to the pressure of the thermal head 13 on the platen roller 12, the drum +6 rotates in the H direction, and at the same time the ink ribbon 20 also moves in the arrow direction, and thermal transfer recording is started by heat generation control of the thermal head 13. Ru.

43: When recording for one color is completed, rotation of the drum 16 and feeding of the ink ribbon 20 are stopped.

44: Simultaneously with the end of recording, the guide member 22 moves (for example, by a solenoid drive source) in a direction (upward) to close the recording paper supply path.

45: When recording is completed, the thermal head 13 leaves the platen 12.

46.47 The nib platen roller 12 rotates in the recording paper return direction indicated by arrow E (at this time, the drum 16 is in a freely rotatable state), and the recording paper is returned.

At the same time, the ink ribbon 20 also moves in the direction of the arrow to the position where the next color is located.

48: When the return of the recording paper is completed in previous flows 45, 46, and 47, 49: Recording of the next color begins, and operations in flows 39 to 49 are repeated. When the golden record is completed, 50 Nidrams 1
6 further rotates in the direction of the arrow from the stop position of the drum 16 when the return of the recording paper in flow 48 is completed.

51: Due to the rotation of the drum 16, the recording paper gripping section 19 is opened and the "1 grip" is released.

52: When the recording paper 2 is released from the drum 16, the platen roller 12 rotates in the recording paper return direction (E) and guides the recording paper to the discharge path 23.

By controlling the recording paper return of the 53-nib platen roller 12, the leading edge of the recording paper engages with the discharge rollers 24 and 25, and the discharged recording paper receiver is sent out in the direction of the section 26 by rotation of the rollers in the J and -directions.

54: The recording paper discharged by the paper discharge rollers 24 and 25 is received by the discharge recording paper receiving section 26, and one sheet of color image recording is completed.

55: After the recording of the first sheet is completed, if there is a second sheet to be recorded, the same operation is repeated from flow 32.

Further, if the recording ends after recording one sheet, the recording operation is stopped.

Furthermore, a guide member 22 that performs recording paper guide switching control to a recording paper supply path and a recording paper discharge path, which is the gist of the present invention.
The operation will be explained in detail using FIGS. 3 and 4. FIG. 3 is a diagram showing the operating state of the guide member 22 when feeding recording paper to the recording section. In FIG.
63 is a solenoid shaft, 63 is a guide member drive arm, and 66 is a shaft that rotates the solenoid shaft 62 and guide member drive arm 63.
A support shaft 65 supports the movable member, a fixed shaft 65 fixes the guide member 22 and the rectangular member drive arm 63, and 68 a support shaft provided in the opening provided in the guide member drive arm 63 and the main body frame (not shown). 67 is a damper that prevents the spring 68 of the guide member driving arm from being pulled too much, and 7° is an upper and lower guide plate that guides the recording paper.

Arrow A shows an example of how the multi-go solenoid operates, and arrow N shows the recording paper supply direction.

When the color recording apparatus is currently in the recording paper supply state, the solenoid shaft 62 is pulled in the L direction against the contraction force of the spring 68 due to the operation of the solenoid 61 as shown in FIG. Since the guide member 22 is moved in the P direction via the member drive arm 63, the recording paper can be fed in the N direction.

FIG. 4 is a diagram showing the operating state of the guide member 22 when feeding the recording paper toward the paper discharge section.
Components that are the same as in the figures are numbered the same. When the color recording apparatus is currently in the recording paper return and recording paper ejection state, the solenoid 61 is in the OFF state, so the solenoid shaft 62 is pulled out from the solenoid 61 by the contraction force of the spring 68 in the N direction, so that the guide member 22 is guided Since the recording paper is moved in the Q direction via the member drive arm 63, it is possible to feed the recording paper in the 0 direction.

It is also possible to reverse the ON-OFF state of the solenoid 61 between the recording paper supply state and the state in which the recording paper is sent to the ejecting section, but in the case of the above embodiment, the number of times the recording paper is sent out to the ejecting section is Since there is a large amount of waste, the configuration is such that it is turned off when the paper is being sent to the discharge section.

With the above configuration, the color recording apparatus of the present invention can accurately feed the recording paper even when the recording paper is repeatedly moved back and forth, thereby preventing color shift and obtaining high-quality recorded images. In addition, by switching the guide member, the recording paper can be smoothly fed and discharged.

<Effects of the Invention> As described above, the paper conveyance path switching method of the color recording apparatus of the present invention is such that in a color recording apparatus that sequentially records a plurality of colors in one page unit, the recording paper is fed from the recording paper cassette. a platen roller connected to a drive source, a feed roller in contact with the platen roller, a thermal line head that moves toward and away from the platen roller, and a thermal line head located near the platen roller. The recording paper is passed between the platen roller and the thermal head by a rotating drum arranged and connected to a drive source, a clamping mechanism for recording paper provided at a predetermined location on the circumferential surface of the rotating drum, and the platen roller and feed roller. a supply path for guiding the recording paper from the paper feed section between the platen roller and the feed roller so that the leading end thereof is clamped by the clamping mechanism of the rotating drum; and a supply path provided branching from the supply path. A switching means for selectively opening and closing an ejection path for ejecting recording paper, the supply path side and the ejection path side, and a transfer ink tape disposed to pass between the platen roller and the thermal head tonneau. The paper feed during the recording operation is performed by the rotation of the rotary drum, the switching means opens the supply path when recording paper is loaded, and the switching means opens the discharge path after the recording operation. With this configuration, even if the recording paper is repeatedly moved back and forth, it is possible to accurately feed the paper, thereby preventing color shift and obtaining recorded images with voice quality. can be done smoothly.

[Brief explanation of the drawing]

No. 111 is a configuration diagram of a color recording device according to the present invention, No. 2
This figure is a flowchart of the same, FIGS. 3 and 4 are configuration diagrams of a guide member, and FIG. 5 is a configuration diagram of a conventional color recording apparatus. 2: Recording paper, 9: Recording paper supply path, lo: Recording paper guide path, 12 Ni platen roller, 13: Thermal head, 16
:@Rotating drum, 17: Clamp, 19: Recording paper holding part, 2o: Ink ribbon, 22 Ni guide member, 23:
Ejection path, 26: Ejection recording paper holder, 61: Solenoid

Claims (1)

[Scope of Claim] A color recording device that sequentially records multiple colors on a page-by-page basis, comprising: a paper feed section for feeding recording paper from a recording paper cassette;
A platen roller connected to a drive source, a feed roller in contact with the platen roller, a thermal line head that moves toward and away from the platen roller, and a thermal line head disposed near the platen roller and connected to the drive source. The leading edge of the rotating drum passes between the platen roller and the thermal head by the recording paper clamping mechanism provided at a predetermined location on the circumferential surface of the rotating drum, the platen roller and the feed roller, and the tip of the recording paper is a supply path that guides recording paper from the paper feed section between the platen roller and the feed roller so as to be clamped by a clamp mechanism; and a discharge path that is branched from the supply path and that discharges the recording paper. and a switching means for selectively controlling opening and closing of the supply path side and the discharge path side, and a transfer ink tape disposed between the platen roller and the thermal head, during a recording operation. The paper feeding is performed by the rotation of the rotary drum, and the switching means opens the supply path when recording paper is loaded, and the switching means opens the discharge path after the recording operation. Characteristic color recording device.