JPH0462271B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Technical Field> The present invention relates to a color recording device that sequentially overlays and records multiple colors on a page-by-page basis, and particularly relates to a conveyance path switching system between a recording paper supply path and a discharge path. It is.

<Prior Art> Recently, compact and low-cost color hard copy devices have been actively developed, and the most popular type of device is a transfer-type thermal recording 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). This is a method in which colors are recorded in a superimposed manner for each screen in the order of black (B), etc. (screen sequential method).

That is, the ink film tape has the above-mentioned Y, M, and C.
(Furthermore, it is a roll of tape arranged side by side in the order of B).While the tape is advanced in one direction, the recording paper is returned to the previous position each time the color changes, and it is sequentially arranged screen by screen. It is recorded by overlapping colors.

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 a drive source via the drive pulley 72. The rotation of the roller 71 moves the recording paper forward or backward.

The recording paper 73 touches the drive roller 71 on the way.
The paper is fed by a paper feed sprocket 74 that is linked to
It is designed to be sent upward from the bottom of 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 the drive roller 71 along the paper 73 below the recording paper 73, and is wound around the take-up roller 77. be equipped. This roller 7 on the winding side
7 is connected to a drive motor 78.

In addition, a line-type thermal head 79 is disposed near the bottom of the drive roller 71, and during recording, it presses from above the ink film tape 76 to the recording paper 73 on the drive roller 71, and heats the ink film tape as appropriate. 76 ink is transferred onto paper 73.

In such a recording device, as mentioned above, when performing a recording operation by sequentially overlapping Y, M, C (and even B) colors on each screen, the recording paper is moved forward and backward three (or four) times. At this time, if paper feeding accuracy is poor, color misregistration occurs, which is an important problem.

In other words, for example, in a 10 dot/mm device, the paper feeding accuracy for 3 (or 4) repetitions is ±0.05 mm.
(Color shift)... 1 dot or less is required.

However, although the above-mentioned tractor feed system 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. Ta.

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 or slide, resulting in misalignment, and it is also difficult to obtain the paper feeding accuracy as described above. was difficult.

<Object 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 it 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.

<Example> FIG. 1 is a diagram showing the overall configuration of a color recording apparatus according to the present invention. 1 is recording paper loading cassette 3
These are semicircular rollers for sending the recording paper 2 pushed up by the recording paper pushing up spring 4 provided at the recording paper feed rollers 7 and 8 to the recording paper feed rollers 7 and 8. 5
Reference numeral 6 indicates an upper guide plate for reliably guiding the recording paper taken out by the semicircular roller 1 to the recording paper supply rollers 7 and 8, and 6 indicates a lower guide plate. Recording paper feed rollers 7 and 8 feed the recording paper 2 to a recording paper supply path 9. Reference numeral 10 denotes a recording paper guide path that shares recording paper supply and discharge, 12 a platen roller that conveys the recording paper 2 by pressure from the bail roller 11, and 13 a thermal head, which is interposed between the platen roller 12 and the ink ribbon 20. The recording paper 2 is subjected to thermal transfer recording. This thermal head 13 is supported by a thermal head support shaft 21, and a shaft 15
By moving in the direction of arrow F, the support spring 14
It moves up and down in the direction of arrow G. This vertical movement controls the attachment and detachment of the thermal head 13 and platen 12. 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 provided inside the rotary drum for holding the recording paper 2 in its mouth, and is rotatably supported. Numeral 18 is a spring having one end interposed in the rotating drum 16 and the other end in the clamp 17, which provides a clamping force when the clamp 17 grips the recording paper 2, and 19 is a recording paper gripping portion. Reference numeral 22 denotes a guide member that is moved up and down by, for example, a solenoid drive source, 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 23. 24 and 25 are recording paper ejection rollers provided at the end of the ejection path 23;
6 is an ejected recording paper receiving section.

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

31: Recording starts with a recording start command. At this time,
The thermal head 13 is separated from the platen roller 12, and the recording paper holding portion 19
is in an open state, that is, in a state where it is waiting for recording paper. Further, the paper feed path closing guide member 22 is in a state where the paper feed path is closed, that is, it is lowered downward. (Hereafter, 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 the recording paper 2 loaded in the recording paper loading cassette 3 is guided by the guide plates 5 and 6. According to
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 arrows B and C of the feed rollers 7 and 8
The rotation of the recording paper feed path 9 sends out the recording paper to the recording paper supply path 9.

34: The leading edge of the recording paper fed through 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 grips it at the gripping section 19.
It rotates only the distance up to.

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 platen roller 12, 36: The platen roller 12 stops (by feeding the recording paper by the fixed amount) 37: The recording paper 2 is at the gripping position. Drum 1
6 rotates a certain amount in the H direction.

38: The spring 18 is contracted by the rotation of the flow 37, and the clamp 17 is drawn toward the drum 16, so the gripping portion 19 closes and the recording paper is held in its grip.

39: Through flow 38, the recording paper is completely placed in drum 1.
6, the shaft 15 moves in the thermal head pressing direction F to bring the thermal head 13 into the recording state, and the spring 1
4, the platen 12 is pressed.

40, 41, 42: Due to the pressure of the thermal head 13 on the platen roller 12, the drum 16 rotates in the H direction, and at the same time the ink ribbon 20 also moves in the direction of the arrow, and thermal transfer recording is started by heat generation control of the thermal head 13. Ru.

43: When recording for one color is completed, the rotation of the drum 16 and the 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) that closes the recording paper supply path.

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

46, 47: The platen roller 12 rotates in the recording paper return direction shown by arrow E (at this time, the drum 16
(is in a freely rotatable state) 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 of flows 39 to 49 are repeated. When recording of all colors is completed, 50: The drum 16 further rotates in the direction of arrow I from the stop position of the drum 16 at the time of completion of rewinding the recording paper in flow 48.

51: As the drum 16 rotates, the recording paper gripping section 19 is released and the "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.

53: By controlling the recording paper return of the platen roller 12, the leading edge of the recording paper is engaged with the discharge rollers 24 and 25, and is sent out toward the discharge recording paper receiving section 26 by rotation of the rollers in the J and K directions.

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

55: After recording the first sheet, if there is a second sheet to be recorded, repeat the same operation from flow 32. or,
If the recording ends after recording one sheet, the recording operation is stopped.

Further, the operation of the guide member 22 that performs recording paper guide switching control to the recording paper supply path and the recording paper ejection path, which is the gist of the present invention, will be explained in detail with reference to 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 guide member driving arm, 66
is the solenoid shaft 62 and the guide member drive arm 63
65 is a fixed shaft that fixes the guide member 22 and the guide member drive arm 63, and 68 is an opening provided in the guide member drive arm 63 and a 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 70 is an upper and lower guide plate that guides the recording paper. Arrow A shows an example of how the solenoid operates, and arrow N
indicates the recording paper feeding direction.

When the color recording apparatus is currently in the state of supplying recording paper, the solenoid 61 operates as shown in FIG.
Because it is pulled in the L direction against the contractile force of
The guide member 2 via the guide member drive arm 63
2 is moved in the P direction, so that 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. In FIG. 4, the same components as in FIG. 3 are given the same numbers. When the color recording device is currently in the recording paper return and recording paper ejection state, the solenoid 61 is in the OFF state, so the spring 68 is in the M
Since the solenoid shaft 62 is pulled out from the solenoid 61 by the contraction force in the direction, the guide member 22 is moved in the Q direction via the guide member drive arm 63, so that recording paper can be fed in the O direction.

It is also possible to configure the ON-OFF state of the solenoid 61 in the recording paper supply state and the state in which the recording paper is fed to the ejecting section to be reversed, but in the case of the above embodiment, the number of times the recording paper is fed to the ejecting section is Since there are a lot of them, we designed it so that it is turned off when it is being sent out 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, recording paper can be smoothly fed and ejected.

<Effects of the Invention> As described above, the paper conveyance path switching system of the color recording apparatus of the present invention feeds recording paper from a recording paper cassette in a color recording apparatus that records a plurality of colors sequentially and overlapping each page. 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. A rotating drum arranged and connected to a drive source, a recording paper clamping mechanism provided at a predetermined location on the circumferential surface of the rotating drum, and a space between the platen roller and the thermal head by the platen roller and feed roller. a supply path for guiding 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 clamp mechanism of the rotating drum; and a supply path branching from the supply path. an ejecting path for ejecting the printed recording paper; a switching means for selectively opening and closing the supply path side and the ejecting path side; and a transfer ink disposed between the platen roller and the thermal head. The paper feed during the recording operation is performed by the rotation of the rotary drum, and when recording paper is loaded, the switching means opens the supply path, and after the recording operation, the switching means opens the ejection path. Since the configuration is such that the recording paper is moved back and forth repeatedly, it is possible to accurately feed the paper, thereby preventing color shift and obtaining high-quality recorded images. Paper can be fed and discharged smoothly.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a color recording apparatus according to the present invention, FIG. 2 is a flowchart of the same, and FIGS. 3 and 4.
The figure is a block diagram of a guide member, and FIG. 5 is a block diagram of a conventional color recording apparatus. 2... Recording paper, 9... Recording paper supply path, 10...
Recording paper guide path, 12...Platen roller, 13
... Thermal head, 16 ... Rotating drum, 17
... Clamp, 19 ... Recording paper holding part, 2
0... Ink ribbon, 22... Guide member, 23
...Discharge path, 26...Discharge recording paper receiving section, 61...
…solenoid.

Claims (1)

[Scope of Claims] 1. 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; and 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; a rotating drum disposed near the platen roller and connected to a drive source; A recording paper clamping mechanism provided at a predetermined location on the circumferential surface of the drum, and the platen roller and feed roller pass between the platen roller and the thermal head, and the leading edge of the recording paper is clamped by the clamping mechanism of the rotating drum. a supply path that guides recording paper from the paper feed section between the platen roller and the feed roller; a discharge path that is branched from the supply path and discharges the recording paper; and a side of the supply path. A switching means for selectively opening and closing the ejection path side, and a transfer ink tape disposed between the platen roller and the thermal head, and the paper feed during recording operation is controlled by the rotation. A color recording apparatus characterized in that the switching is performed by rotation of a 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. .