JPH03166972A - Thermal transfer recording device - Google Patents

Abstract

PURPOSE:To reduce the oscillation and noise of a device by driving an ink sheet transport device and a recording medium transport device with a powerful drive force during image recording process and reducing a drive force for the recording medium transport device during other transport time. CONSTITUTION:Upon finish of transfer of a single line of record data, a motor for ink sheet transport 25 is driven to transport an ink sheet 14 by (1/n) line. In this case, an instruction is given so that a drive circuit 49 drives the motor for ink sheet transport 25 to rotate using a large amount of electric current in accordance with a control signal 49b. Next a drive circuit 48 is instructed by a control signal 48b to drive a motor for transporting a recording paper 24 using a large amount of electric current, and consequently a recording paper 11 is transported by a single line in an arrow(b) direction. If the recording of a single page is completed, the recording paper 11 is fed in the direction of paper delivery rollers 16a, 16b by a distance almost equal to a length (l) between a recording position for a thermal head 13 and a cutter 15. In this case, the drive circuit 48 is instructed to drive the motor for transporting a recording paper 24 to transport the recording paper by the control signal 48b using a small amount of electric current.

Description

[Detailed description of the invention]

[Field of Industrial Application] The present invention relates to a thermal transfer recording device that records an image on a recording medium by transferring ink contained in an ink sheet to a recording medium. [Prior Art] An ink sheet (so-called multi-print sheet) capable of recording an image multiple times is known. If this ink sheet is used, when recording a recording length L continuously, each image can be recorded. The transport length of the ink sheet transported after the end of recording or during image recording is smaller than its recording length L < (L/n
, n>1). This results in
The ink sheet usage efficiency is n times higher than before, and it is expected that the running costs of thermal transfer printers will decrease. below,
This recording method is called multiprint. [Problem to be solved by the invention] In a thermal transfer printer that performs multi-printing,
Transfer recording is performed by shearing the ink layer of the ink sheet. For this reason, compared to a normal thermal transfer recording method (one-time recording), the difference in the transport load of the ink sheet and recording paper during thermal transfer recording and in other cases is significantly larger. Therefore, if the conveyance driving force for conveying the recording paper or ink sheet is set to an appropriate size so that the recording paper or ink sheet can be conveyed accurately during thermal transfer recording, it is necessary to When the conveyance load is small, such as when feeding paper, the conveyance driving force for conveying the ink sheet or recording paper becomes excessive.
Gears, recording paper, etc. vibrate, causing noise. The present invention has been made in view of the above-mentioned conventional example, and is a thermal transfer recording method that reduces the vibration and noise of the apparatus by reducing the driving force for conveying the ink sheet to the recording medium or the ink sheet during times other than thermal transfer recording. The purpose is to provide equipment.

[Means to solve the problem]

In order to achieve the above object, the thermal transfer recording device of the present invention has the following configuration. That is, it is a thermal transfer recording device that records an image by transferring ink contained in an ink sheet to a recording medium, and includes a recording means for recording an image on the recording medium by acting on the ink sheet, and the ink. An ink sheet conveying means for conveying a sheet, a recording medium conveying means for conveying the recording medium, and a large driving force is applied to the ink sheet conveying means and the recording medium conveying means when an image is recorded by the recording means. and a control means for controlling the recording medium to be transported by reducing the driving force of the recording medium transporting means during other transports. [Function] In the above configuration, when recording an image on a recording medium by acting on an ink sheet, a large driving force is used to drive the ink sheet conveyance means that conveys the ink sheet and the recording medium conveyance means that conveys the recording medium. At other times of conveyance, the driving force of the recording medium conveying means is reduced to convey the recording medium. [Embodiments] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. [Description of facsimile machine (Figs. 1 to 4)] Figs. 1 to 4 are diagrams showing an example in which the thermal transfer printer of the embodiment is applied to a facsimile machine. FIG. 2 is a block diagram showing a schematic configuration of the facsimile device, and FIG. 3 is a side sectional view of the facsimile device. First, the schematic configuration will be explained based on FIG. 2. In the figure, reference numeral 100 denotes a reading unit that photoelectrically reads an original and outputs it as a digital image signal to a control unit 101, and is equipped with an original conveyance motor, a COD image sensor, and the like. Next, the configuration of the control unit 101 will be explained. Reference numeral 110 denotes a line memory for storing image data of each line of image data, and when transmitting or copying an original, the reading unit 10
Image data for one line starting from 0 is stored, and when image data is received, 1 line data of the decoded received image data is stored. Image formation is then performed by outputting the stored data to the recording unit 102. Reference numeral 111 is an encoding/decoding unit that encodes image information to be transmitted by MH encoding or the like, and decodes received encoded image data to convert it into image data. Further, 112 is a buffer memory for storing encoded image data to be transmitted or received. These control parts 1
Each part of 01 is a CPU such as a microprocessor.
113. In addition to the CPU 113, the control unit 101 includes a ROM 114 that stores control programs and various data for the cpUl 13, and a CPU 11.
RA which temporarily stores various data as a work area of 3.
It is equipped with M115 etc. A recording unit 102 includes a thermal line head and records an image on recording paper using a thermal transfer recording method. This configuration will be described in detail later with reference to Figure 3. Reference numeral 103 is an operation unit that includes various function instruction keys such as sending start, telephone number input keys, etc. 103a is a switch for instructing the type of ink sheet 14 to be used, and when switch l03a is on, a multi-print ink sheet is used. However, when it is off, it indicates that a normal ink sheet has been installed. 1
04 is a display section that normally displays various functions provided in the operation section 103, the status of the device, and the amount of remaining ink sheet. 105 is a power supply unit for supplying power to the entire device. In addition, 106 is a modem (modulator/demodulator), 1
07 is a network control unit (NCU), and 108 is a telephone set. Next, the configuration of the recording section 102 will be explained in detail with reference to the side sectional view of FIG. Note that parts common to FIG. 2 are indicated by the same figure numbers. In the figure, 10. indicates the recording paper 11, which is plain paper, as the core 1.
This is a roll of paper wound around 0a. This roll paper 10 is arranged so that the recording paper 11 can be supplied to the thermal head l3 by rotation of the platen roller 12 in the direction of the arrow.
It is rotatably housed within the device. Note that lOb is a roll paper loading section, in which the roll paper 10 is removably loaded. Furthermore, a platen roller 12 conveys the recording paper 11 in the direction of arrow b and presses the ink sheet 14 and the recording paper 11 between it and the heating element 132 of the thermal head 13. The recording paper 11, on which the image has been recorded due to the heat generated by the thermal head 13, is conveyed toward the ejection rollers 16 (16a, 16b) by further rotation of the platen roller 12, and when the image recording for one page is completed, it is transferred to the cutter. 1 5 (1
5a and 15b), the paper is cut into pages. 17 is an ink sheet supply roll that winds the ink sheet 14; 18 is an ink sheet winding roll;
It is driven by an ink sheet conveying motor, which will be described later, and winds up the ink sheet 14 in the direction of arrow a. Note that the ink sheet supply roll 17 and the ink sheet take-up roll 18 are connected to the ink sheet loading section 7 in the main body of the apparatus.
0 is removably loaded. Furthermore, 19 is a sensor for detecting the remaining amount of the ink sheet 14 and the conveying speed of the ink sheet 14. Further, 20 is an ink sheet sensor for detecting the presence or absence of the ink sheet 14 and the remaining amount of the ink sheet 14 based on the marks attached to the ink sheet 14, and 21 is a spring for detecting the presence or absence of the ink sheet 14 and the remaining amount of the ink sheet 14. The thermal head 13 is pressed against the platen roller 12 through the platen roller 12. Also,
22 is a recording paper sensor for detecting the presence or absence of recording paper. Next, the configuration of the reading section 100 will be explained. In the figure, 30 is a light source that illuminates the original 32;
The light reflected by CCD sensor 2 is input to CCD sensor 31 through an optical system (mirrors 50, 51, lens 52) and converted into an electrical signal. The document 32 is transported by conveyance rollers 53.54, 55.5 driven by a document conveyance motor (not shown).
6, the document 32 is transported in accordance with the reading speed. In addition. Reference numeral 57 denotes a document loading table, and the plurality of documents 32 stacked on this loading table 57 are separated one by one by the cooperation of the conveying roller 54 and the pressing separation piece 58 and conveyed to the reading section 100. be done. 4l is a control board that constitutes the main part of the control section 101, and various control signals are output from this control board 41 to each part of the apparatus. Also, 106 is a modem board unit, 107 is an NC
It is a U board unit. FIG. 4 is a diagram showing details of the ink sheet 14 and the conveying mechanism for the recording paper 11. The same parts as those in the above-mentioned drawings are designated by the same number, and their explanation will be omitted. In FIG. 4, 25 is an ink sheet transport motor that transports the ink sheet l4 in the direction of arrow a, and 24 is a recording motor that rotationally drives the platen roller 12 to transport the recording paper 11 in the direction of arrow b, which is opposite to the direction of arrow a. This is a paper transport motor. 26 and 27 are transmission gears that transmit the rotation of the recording paper motor 24 to the platen roller 12, and 28 and 29' are transmission gears that transmit the rotation of the ink sheet motor 25 to the take-up reroller 18. 85 via transmission gears 86 and 87? Supply roll 1
A torque limiter applies pack tension to the ink sheet 7, and this back tension prevents the ink sheet 14 from sagging. In addition, as shown in the figure, the recording paper 11 and the ink sheet l4
By reversing the conveyance directions of the ink sheet l4, the direction in which images are sequentially recorded in the longitudinal direction of the recording paper 11 (direction of arrow a, opposite to the conveyance direction of the recording paper 11) matches the conveyance direction of the ink sheet l4. do. Here, the conveyance speed V of the recording paper 11 is
, Vp=-n-Vl (Vt is the ink sheet 14
(1 indicates that the conveyance direction of the recording paper 11 and the ink sheet l4 are different), then the relative speed V■ of the recording paper 11 and the ink sheet 14 with respect to the thermal head 13 is: vPI=Vp−V+=
It is expressed as (1 + 1/n)vP, and Kono? versus speed V
Pf is equal to or higher than Vp (conveying speed of recording paper), and recording paper 1
It can be seen that the relative velocity is greater than the relative velocity V■' (=(1-1/n)Vp) when the ink sheet 1 and the ink sheet 14 are conveyed in the same direction. In addition to this, when recording n lines with the thermal head 13, (n/m) lines (
A/m) (m is an integer, n>m) When transporting the ink sheet 14 in the direction of the arrow a or when recording a distance corresponding to the length L, the ink sheet l4 is moved from the recording paper 11 during recording. There is a method of transporting the ink sheet 14 in the opposite direction at the same speed and rewinding the ink sheet 14 by L·(n-1)/n (where n>l) before recording the next predetermined amount. In any of these cases, the relative speed when recording with the ink sheet 14 stopped is VP%, and the relative speed when recording while moving the ink sheet 14 is 2V. FIG. 1 shows a control section 101 and a recording section 1 in a facsimile machine according to an embodiment.
This is a diagram showing the electrical system connection with 02. Parts common to other drawings are indicated by the same figure number. The thermal head 13 is a line head. Then, this thermal head 13 is controlled by 1. It is provided with a shift register 130 for inputting serial recording data 43 for lines, a latch circuit 131 for latching the data in the shift register 130 by a latch signal 44, and a heating element 132 consisting of a heating resistor for l lines. Here, the heating resistors 132 are 132-1 to 132-m.
It is divided into m blocks and driven. Further, 133 is a temperature sensor attached to the thermal head 13 for detecting the temperature of the thermal head 13. The output signal 42 of this temperature sensor j33 is A/I converted within the control unit 101 and input to the CPU 113. As a result, the CPU 113 also learns the temperature of the thermal head 13 and outputs a strobe signal 47 corresponding to the temperature.
By changing the q pulse width, or by changing the driving voltage of the thermal head 13 supplied through the line 45,
The printing energy applied to the thermal head 13 is changed according to the characteristics of the ink sheet 14. Note that the type (characteristic) of this ink sheet 14 is specified by the switch 103a described above. In addition, the types and characteristics of this ink sheet 14 are as follows:
4 may be detected, or the marks and notches on the ink sheet cartridge may be determined based on protrusions, etc. 46 is a drive circuit that inputs a drive signal for the thermal head 13 from the control unit 101 and outputs a strobe signal 47 for driving the thermal head l3 in units of blocks. Note that this drive circuit 46 changes the voltage output to the power supply line 45 that supplies current to the heating element 132 of the thermal head 13 in accordance with instructions from the control unit 101 to control the thermal head 13.
The printing energy can be changed. 48.49
are drive circuits that rotationally drive the corresponding recording paper conveyance motor 24 and ink sheet conveyance motor 25, respectively. 48a and 49a are drive signals for instructing the start of the conveyance drive and its rotation direction, and 48b and 49b are control signals (here, a 2-bit signal) for controlling the respective driving forces of the motors 24 and 25. ), the drive circuits 48 and 49 both control the Chotsuba driver using this control signal, set the drive current value in three stages of large, medium, and small, and drive each corresponding motor (24, 25). The torque is changed. Although the recording paper conveyance motor 24 and the ink sheet conveyance motor 25 are stepping motors in this embodiment, they are not limited to this, and may be, for example, DC motors. [Explanation of conveyance of recording paper and ink sheet (Fig. 5)] Fig. 5 (A) is a diagram showing the state of the recording paper 11 and ink sheet 14 in a standby state before the start of the recording operation. 11 is at the recording position by the thermal head l3. When image recording is started from this state, the recording paper l1 is conveyed in the direction of arrow b at a speed VP, and the ink sheet 14 is conveyed in the direction of arrow a at a speed vI. The relationship between this speed Vp and 'V+ is as follows. It is set so that V+=Vp/n. FIG. 5(B) is a diagram showing a state in which image recording for one page has been completed. Here, since the trailing edge of one recorded page is in contact with the thermal head l3, in order to cut the recording paper 11 page by page with the cutter 15, the recording paper 11 must be moved forward (in the direction of arrow b) and the thermal head It is necessary to convey the distance "l" between the recording position and the cutter 15 according to l3. During this conveyance, the recording paper conveyance controller 24 receives the control signal 4.
8b, and in this embodiment, for example, the recording paper conveyance motor 24 is driven to rotate at 800 pps. Note that at this time, the ink sheet 14 is fixed. FIG. 5(C) shows a state in which the vicinity of the rear end of the recording paper l1 on which the image has been recorded in this manner is conveyed until it passes through cutting by the cutter 15. In FIG. 5(D), the cutter 1 is
The cutter 15 is driven by a drive motor (not shown).
A and 15b are engaged, and the recording paper l1 is cut into pages. Here, lla is the recorded 1
This shows the recording paper portion of the page, and this cut recorded recording paper 11a is discharged by the rotation of the discharge roller 16. At the same time, as shown in FIG. 5(D), after cutting the recording paper 1l, the recording paper 11 is moved in the direction opposite to the arrow b (
The control signal 48b drives the motor 24 with a small current in the direction of arrow a) to rewind the recording paper 11 until the leading edge of the recording paper 11 is slightly closer to the paper ejection roller 16 than the transfer position by the thermal head 13. (transport distance x 4)
, cue the next page for recording. At this time, the ink sheet conveying motor 25 is also driven with a small current to slightly wind up the ink sheet 14 in the direction of arrow a onto the ink sheet winding roll 18, thereby taking up the slack in the ink sheet l4. In this embodiment, a case has been described in which the recording paper 11 and the ink sheet 14 are transported in opposite directions, but the invention is not limited to this, and the recording paper 11 and the ink sheet 14 are
Of course, it can be carried out in the same way even if the conveyance directions are the same. [Description of Recording Operation (FIG. 6)] FIG. 6 is a flowchart showing the recording process in the facsimile apparatus of this embodiment. A control program for executing this recording process is stored in the ROM 114 of the control unit 101. This process starts when the image data for one line to be recorded is stored in the line memory 110 and a state is reached in which the recording operation can be started. First, step Sl is 1.
Shift register 13 for serially recording data for lines
Output to 0. When the transfer of the recording data for one line is completed, the latch signal 44 is output in step S2, and the recording data for one line is stored in the latch circuit 131. Next, in step S3, the ink sheet conveying motor 25
The ink sheet 14 is transported by (1/n) lines in the direction of arrow a in FIG. At this time, the control signal 49
b instructs the drive circuit 49 to rotate the ink sheet conveying motor 25 with a large current. Next, in step S4, the control signal 48b instructs the drive circuit 48 to drive the recording paper transport motor 24 with a large current, and drives the recording paper transport motor 24.
The recording paper l1 is conveyed one line in the direction of arrow b. In addition,
This one line has a length corresponding to the length of one dot recorded by the thermal head l3. Next, the process proceeds to step S5, in which each block of the heating elements 132 of the thermal head 13 is sequentially energized. Then, when all m blocks are energized and recording of one line is completed, the process advances from step S6 to step S7.
Check whether recording for one page is completed. If one page's worth of recording has not been completed, the process advances to step S7 or step S8, and the next line of print data is transferred to the shift register 130 of the thermal head 13. Next, the process returns to step S2 and the recording process is performed as described above. When the recording for one page is completed in step S7, step S9
Then, the recording paper 11 is moved to the paper ejection roller 16a . Send to 16b. At this time, the control signal 48b instructs the drive circuit 48 to transport the ME recording paper transport motor 24 with a small current.
The recording paper transport motor 24 is driven to zero rotation at 0 pps (l-2 phase excitation). At this time, the ink sheet conveyance motor 2
5 to stop the ink sheet 14 from being transferred. Next, the process proceeds to step SIO, where the cutters 15a and 15b are driven and engaged to cut the recording paper 11 in page units of 1Z. In step Stt, the recording paper transport motor 24 is controlled by the control signal 4.
8b instructs to drive with a small current, and the drive signal 4
8a to drive a large rotation in the opposite direction (for example, 800 ppS
, 1-2 phase dislike). As a result, the recording paper 1l is pack-fed and the recording position is located. At this time, at the same time,
A control signal 49b is output to drive the ink sheet conveying motor 25 with a small current, for example 1600 pps (
1-2 phase excitation) to wind up the ink sheet 14 by a predetermined amount to take up the slack generated in the ink sheet 14. Note that the rotational load on the ink sheet conveyance motor 25 at this time is extremely small because it merely winds up the slack generated in the ink sheet 14. [Explanation of the recording principle (Fig. 7)] Fig. 7 shows the recording paper 11 and ink sheet in this embodiment]
14 is a diagram illustrating an image recording state when image recording is performed with the conveyance direction of 14 reversed. FIG. As shown, a recording paper 11 and an ink sheet 14 are held between a platen roller 12 and a thermal head 13, and the thermal head 13 is pressed against the platen roller 12 with a predetermined pressure by a spring 21. Here, the recording paper 11 is moved by the arrow b due to the rotation of the platen roller l2.
It is transported in the direction at a speed Vp. On the other hand, the ink sheet 14
is conveyed at a speed V+ in the direction of arrow a by the rotation of the ink sheet conveyance motor 25. Now, power supply 1 is connected to heating resistor 132 of thermal head 13.
When the ink sheet 14 is energized and heated, the shaded portion 81 of the ink sheet 14 is heated. Here, 14a represents the base film of the ink sheet 14, and 14b represents the ink layer of the ink sheet 14. By energizing the heating resistor 132, the heated ink in the ink layer 81 is melted, and a portion of the ink layer 82 is transferred onto the recording paper 11. The ink layer portion 82 to be transferred corresponds to approximately 1/n of the ink layer indicated by 81. At the time of this transfer, at the boundary line 83 of the ink layer 14b,
It is necessary to generate a shearing force on the ink and transfer only the ink layer portion indicated by 82 onto the recording paper 1l. However, this shearing force varies depending on the temperature of the ink layer, and the higher the temperature of the ink layer, the smaller the shearing force tends to be.
Therefore, if the heating time of the ink sheet 14 is shortened, the shearing force within the ink layer increases. Therefore, if the relative speed between the ink sheet 14 and the recording paper 11 is increased, the ink layer to be transferred is removed from the ink sheet 14. It can be removed reliably. According to this embodiment, since the heating time of the thermal head l3 in the facsimile machine is as short as about 0.6 ms, by making the conveyance direction of the ink sheet 14 and the conveyance direction of the recording paper 11 in opposite directions (opposed to each other), Ink sheet 1
4 and the recording paper 11 are increased. [Description of the ink sheet (Fig. 8)] Fig. 8 is a cross-sectional view of the ink sheet 14 used for multi-printing. Here, the case of an ink sheet consisting of four layers will be explained. The second layer is a base film that serves as a support for the ink sheet 14. In the case of multi-printing, thermal energy is applied to the same location many times, so aromatic polyamide films and capacitor paper with high heat resistance are advantageous, but conventional polyester films can also be used. Considering the role of a medium, it is advantageous for the thickness of these materials to be as thin as possible from the point of view of printing quality, but from the viewpoint of strength, a thickness of 3 to 8 μm is preferable. The third layer is an ink layer in which the recording paper (recording sheet) is coated with an amount of ink that can be transferred and recorded n times.・The main ingredients of this precept are EVA and other resins as adhesives, carbon black and nigrosine dyes for coloring, and carnauba wax and paraffin wax as binding materials, and can withstand being used n times in the same place. It is formulated as follows. The coating amount is preferably 4 to 8 g/m'', but the sensitivity and density vary depending on the coating amount and can be selected arbitrarily.The fourth layer is an area where printing is not performed and is designed to prevent the third layer ink from being pressure-transferred onto the recording paper. This is a top coating layer provided and is made of transparent wax or the like.As a result, only the transparent fourth layer is pressure-transferred, which prevents scumming on the recording paper.The first layer is the thermal head 13. This is a heat-resistant coating layer that protects the second layer base film from heat.This is suitable for multi-printing where there is a possibility of applying thermal energy for n lines to the same location (when black information continues). However, you can choose whether to use it or not.Also, like polyester film,
This is effective for base films with relatively low heat resistance. Note that the ink sheet is not limited to the above-mentioned configuration; for example, it may be an ink sheet consisting of a base layer and a porous ink retaining layer provided on one side of the base layer and containing ink, or an ink sheet with fine particles on the base film. It may also be an ink sheet in which a heat-resistant ink layer having a porous network structure is provided and the ink is contained in the ink layer. In addition, as the base film, for example, polyimide,
triacetylcellulose, nylon, polyvinyl chloride,
It may also be a film or paper made of boribropylene or the like. Furthermore, although a heat-resistant coating layer is not necessarily required, its material may be, for example, silicone resin, epoxy resin, melamine resin, or the like. Further, the ink applied to the ink sheet 14 is not limited to heat-melting ink, but may be heat-sublimating ink. This heat-sublimable ink sheet is made of, for example, a substrate made of polyethylene terephthalate, polyethylene naphthalate, or aromatic polyamide, and a color containing dye and subesa particles made of guanamine-based resin and fluoro-based resin. It has a layer of material. Further, the heating method is not limited to the thermal head method using the above-mentioned thermal head, and for example, an electric transfer method or a laser transfer method can be used. Furthermore, in this embodiment, the case where the recording paper 11 and the ink sheet 14 are conveyed in opposite directions during recording has been described, but the present invention is not limited to this. Applicable. Further, the recording medium is not limited to recording paper, and may be made of a material that allows ink transfer, such as cloth or plastic sheet. Further, the mounting of the ink sheet is not limited to the configuration shown in the embodiment, but may be of a so-called ink sheet cassette type built in the housing, for example. As explained above, according to this embodiment, when the transport load of the recording paper or ink sheet becomes small, the driving force (torque) of the motor for transporting the recording paper or ink sheet is reduced, thereby reducing the vibration of the apparatus. This has the effect of keeping noise levels low. In this embodiment, the recording section of a facsimile machine is shown, but the present invention is not limited to this, and it goes without saying that the present invention can also be applied to a normal thermal transfer printer.
Furthermore, in this embodiment, the driving force of the transport motor is explained as being controlled by current control of the chopper drive, but the present invention is not limited to this, and the driving force is changed by changing the driving voltage of the motor. (driving torque) may be changed.

【Effect of the invention】

As explained above, according to the present invention, vibration and noise of the apparatus can be reduced by reducing the driving force for transporting the recording medium or the ink sheet during times other than thermal transfer recording.

[Brief explanation of the drawing]

Fig. 1 is a diagram showing the electrical connection between the control section and the recording section in the facsimile machine of the embodiment, Fig. 2 is a block diagram showing the schematic configuration of the facsimile machine of the embodiment, and Fig. 3 is a diagram of the facsimile machine of the embodiment. FIG. 4 is a diagram showing the configuration of the ink sheet and recording paper transport mechanism; FIGS. 5 (A) to (D) are the movement of the recording paper and ink sheet in the facsimile machine of the embodiment. FIG. 6 is a flowchart showing the recording process in the facsimile machine of this embodiment, FIG. 7 is a diagram showing the recording principle of thermal transfer recording of this embodiment, and FIG. 8 is an ink sheet used in this embodiment. This is a cross-sectional view. In the figure, 10...rolled recording paper, 11...recording paper,
l2... platen roller, l3... thermal head, 14... ink sheet, l5... cutter, l6...
... Discharge roller, 17... Ink sheet supply roll,
18... Ink sheet winding roll, 19... Ink sheet sensor, 21... Spring, 22... Recording paper presence/absence sensor, 24... Recording paper conveyance motor, 25...
...Ink sheet conveyance motor, 48b, 49b...
Control signal, 85... Torque limiter, 100... Reading section, 101... Control section, 1 0 2-... Recording section,
103...Operation unit, 104...Display unit, 105...
·power supply. 106...modem, 107-NCU, 110
. . . line memory, 111 . . . encoding/decoding unit,
112...Puffer memory, 113...CPU1
114...ROM% 115...RAM, 1 3 2...Heating resistor (heating element). Patent applicant Canon Inc.

Claims (6)

[Claims] (1) A thermal transfer recording device that records an image by transferring ink contained in an ink sheet to a recording medium, comprising: a recording means for recording an image on the recording medium by acting on the ink sheet; an ink sheet conveyance means for conveying an ink sheet; a recording medium conveyance means for conveying the recording medium; and when the recording means records an image, the ink sheet conveyance means and the recording medium conveyance means are driven at a large speed. 1. A thermal transfer recording apparatus, comprising: a control means for controlling the recording medium to be driven by force, and to reduce the driving force of the recording medium conveyance means during other conveyance to convey the recording medium. (2) The thermal transfer recording apparatus according to claim 1, wherein the control means causes the ink sheet conveyance means to stop the ink sheet when the recording medium is conveyed other than during image recording. . (3) The control means is configured to transport the ink sheet by a predetermined amount and wind it up by the ink sheet transport means when the recording medium is transported other than during image recording. The thermal transfer recording device described. (4) A thermal transfer recording device that records an image by transferring ink contained in an ink sheet onto a recording medium, comprising: a recording means for recording an image on the recording medium by acting on the ink sheet; an ink sheet conveyance means for conveying an ink sheet; a recording medium conveyance means for conveying the recording medium; and when the recording means is recording an image, the conveyance length of the ink sheet is less than the conveyance length of the recording medium. a conveyance control means for controlling the ink sheet conveying means and the recording medium conveying means with a large driving force when recording an image by the recording means, and driving the recording medium conveying means during other conveyances; A thermal transfer recording apparatus comprising: a control means for controlling the conveyance of the recording medium by reducing the force. (5) The thermal transfer recording apparatus according to claim 4, wherein the control means causes the ink sheet conveyance means to stop the ink sheet when the recording medium is conveyed other than during image recording. . (6) The control means is configured to transport the ink sheet by a predetermined amount and wind it up by the ink sheet transport means when the recording medium is transported other than during image recording. The thermal transfer recording device described.