WO2006008857A1 - サーマルプリンタ装置 - Google Patents
サーマルプリンタ装置 Download PDFInfo
- Publication number
- WO2006008857A1 WO2006008857A1 PCT/JP2005/005835 JP2005005835W WO2006008857A1 WO 2006008857 A1 WO2006008857 A1 WO 2006008857A1 JP 2005005835 W JP2005005835 W JP 2005005835W WO 2006008857 A1 WO2006008857 A1 WO 2006008857A1
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- WO
- WIPO (PCT)
- Prior art keywords
- paper
- thermal head
- temperature
- thermal
- detection sensor
- Prior art date
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/315—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material
- B41J2/32—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material using thermal heads
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2202/00—Embodiments of or processes related to ink-jet or thermal heads
- B41J2202/30—Embodiments of or processes related to thermal heads
- B41J2202/31—Thermal printer with head or platen movable
Definitions
- the present invention relates to a thermal printer that can perform image recording with a thermal head using a color-forming reversible thermosensitive recording material using a leuco dye and a reversible developer, and other thermosensitive recording materials. .
- thermal printers that record images by bringing a thermal head into contact with a heat-sensitive recording material.
- certain types of thermal printers such as leuco dyes and the like, have been proposed.
- a thermal printer that records images using a color reversible thermosensitive recording material using a reversible developer see, for example, Patent Document 1
- an image is recorded with a thermal head and an erasing roller is installed.
- use has to be able to delete the image (for example, see Patent Document 2.)
- Patent Document 1 JP 2004-106308 A
- Patent Document 2 JP 2002-331697
- the present invention relates to a thermal printer device in which the paper transport operation is smooth without interruption. Is to provide a place.
- the present invention provides a paper transport path for transporting paper
- a thermal head that records an image on a sheet that has been conveyed on the sheet conveyance path; and a lifting device that raises and lowers the thermal head;
- a paper detection sensor that is disposed upstream of the thermal head and detects a state in which the paper is conveyed to a specific position
- a controller that starts the descent of the thermal head by driving the elevating device based on the detection timing when detecting that the paper is conveyed to a specific position by the paper detection sensor;
- the elevating device when it is detected by the paper detection sensor that the paper has been transported to a specific position, the elevating device is driven based on the detection timing to start the descent of the thermal head.
- the timing at which the paper reaches the recording position and the timing at which the thermal head descends to the same position can be matched, so there is no need to stop the paper at the recording position. For this reason, the conveyance of the paper becomes smooth and the processing time can be shortened.
- the specific position is, for example, the leading end position of the paper.
- the control unit of the present invention can control the start timing for lowering the thermal head when the sheet conveyance speed changes depending on the mode.
- the image is recorded with the thermal head after erasing the image with the erasing roller (erase / record mode).
- the amount of heat stored in the paper differs between the paper transport speed in this mode and the paper transport speed in the mode (recording mode) in which only thermal head image recording is performed without erasing. Therefore, it is necessary to change the conveying speed of both. Therefore, in this case, the control unit controls the thermal head lowering start timing based on the paper transport speed, so that the timing when the paper reaches the recording position and the timing when the thermal head lowers to the same position. Can always be adjusted.
- the control unit of the present invention calculates the number of remaining print lines when the rear end of the sheet is selected.
- the thermal head In the state where the paper has passed, the thermal head is not heated. That is, when the paper trailing edge detection sensor detects the trailing edge of the paper, the number of remaining print lines by the thermal head and the number of printable lines to the paper trailing edge (i.e., from the recording position to the paper trailing edge detection sensor). If the former is larger than the latter, the remaining number of print lines is set to the number of printable lines or less. As a result, when the thermal head reaches the rear end of the paper, the number of remaining print lines becomes zero, and the thermal head can be raised at that time. Raising the thermal head can prevent the thermal head from coming into contact with the rotating platen roller and damaging it.
- the sheet trailing edge detection sensor can also be used as a sheet detection sensor for detecting a specific position of the sheet.
- the thermal head and an erasing roller for erasing an image on a sheet are provided.
- the erasing roller is disposed in the transport path on the upstream side of the thermal head, and the paper detection sensor is disposed between the thermal head and the erasing roller.
- the paper is composed of reversible thermosensitive recording paper that enables printing and erasing by changing the cooling rate after heating (e.g., color reversible thermosensitive recording material using a leuco dye and a reversible developer). Is done.
- (1) recording mode, (2) erasing 'recording mode, and (3) erasing mode can be realized. In the recording mode (1), the erasing roller is not heated.
- the transport of the paper is stopped in order to start the paper lowering of the thermal head by the lifting device. Even if not, the timing when the paper reaches the recording position and the timing when the thermal head descends to the same position can be matched. For this reason, the paper conveyance force becomes smoother without having to stop the paper at the recording position, and the processing time can be shortened.
- FIG. 1 is an external view of a thermal printer apparatus according to an embodiment of the present invention.
- FIG. 2 is a configuration diagram around a paper conveyance path.
- FIG. 3 is a configuration diagram of a control unit.
- FIG. 4 is a diagram for explaining a print pulse pattern.
- FIG. 5 is a diagram for explaining the operation of a history control unit.
- FIG. 6 is a flowchart showing a control operation in a recording mode.
- FIG. 7 is a flowchart showing a control operation of “Waiting for temperature drop”.
- FIG. 8 is a flowchart showing a control operation of “temperature detection”.
- FIG. 9 is a diagram for explaining control when the thermal head is lowered.
- FIG. 10 is a flowchart showing a control operation of “thermal head lowering”.
- FIG. 11 is a timing waveform diagram of printing energization and printing data transfer.
- FIG. 12 is a diagram for explaining the operation content of “paper end processing”.
- FIG. 13 is a flowchart showing the control operation of “paper end processing”.
- FIG. 14 is a flowchart showing the control operation in the erase mode.
- FIG. 15 is a configuration diagram and an operation explanatory diagram for starting energization of the erasing roller.
- FIG. 16 is a diagram for explaining set temperature and forced OFF time.
- FIG. 17 is a flowchart showing a timer interrupt operation in an erase mode.
- FIG. 18 is a graph showing the relationship between the color density of the reversible thermosensitive layer of the thermal paper usable in the thermal printer and the temperature.
- FIG. 1 is an external view of a thermal printer apparatus that is an embodiment of the present invention.
- the thermal printer device 1 includes a thermal head 27 that is a print head and an erasing roller 23.
- the thermal printer 1 uses an image received from a host computer camera (not shown) by the thermal head 27, for example, using a leuco dye and a reversible developer.
- the paper 60 (see Fig. 2), which also has the coloring-type reversible heating recording material force, is printed, and the erase roller 23 erases the image of the heating recording paper once printed so that it can be reused. Yes.
- the color-developable reversible thermosensitive recording material includes, for example, a base material, a reversible thermosensitive layer made of a leuco dye and a reversible developer, and a protective layer.
- the reversible thermosensitive layer is described in, for example, Patent Document 1.
- the properties of the reversible thermosensitive layer are as follows. That is, as shown in FIG. 18, after the heat-sensitive layer is heated to a molten state (heated so as to exceed the melting point 101), when rapidly cooled, the path 103 is formed and the colored state 102 is obtained. On the other hand, when heated and melted and then slowly cooled, the path 104 is routed to a decolored state 105. In the coloring state 102, even if the temperature is held at a temperature slightly lower than the melting point 101, the color disappears through the path 106.
- the thermal printer device 1 is provided with a paper feed tray 2 for setting the paper 60 on the upper back surface (upper supply side), and the lower front surface of the thermal printer device 1 (lower paper discharge side). Is equipped with an output tray 5. Between the paper feed tray 2 and the paper discharge tray 5, a paper transport unit is disposed in the apparatus main body, and a thermal head 27 and an erasing roller 23, which will be described later, are disposed along the paper transport unit. Has been placed.
- a top cover 3 is provided at the top of the apparatus main body so as to be openable and closable, and an operation unit 4 is provided on the right side of the top cover 3.
- the operation unit 4 can select one of three modes: (1) recording mode, (2) erasing 'recording mode, and (3) erasing mode.
- the recording mode is a mode that only records images on the paper 60
- the erase mode is a mode that only erases images recorded on the paper 60
- the erase 'recording mode is recorded on the paper 60. In this mode, images are continuously recorded after erasing.
- FIG. 2 is a configuration diagram when the paper transport unit is viewed from the side.
- the paper transport unit disposed between the paper feed tray 2 and the paper discharge tray 5 has a paper feed roller 20, a paper transport path 22, an erasing processing unit 28, a cooling unit in order from the upstream side to the downstream side.
- a fan 25, a recording processing unit 29, a thermal head lifting position detection sensor 33, and a thermal head lifting cam 32 are arranged.
- the erasure processing unit 28 includes a erasing roller 23 that includes a heater lamp 53 therein and also has an aluminum pipe force, and a platen roller 24 that is disposed to face the roller 23 with the paper conveyance path 22 interposed therebetween.
- the recording processing unit 29 includes a thermal head 27 and a platen roller 26 disposed so as to face the thermal head 27 with the paper transport path 22 interposed therebetween.
- movable portion 21 is an end portion on the paper discharge side with an end portion on the paper feed side as a fulcrum. Can be turned upward. By rotating the movable portion 21 as the fulcrum, it is easy to remove jammed paper on the conveyance path.
- the top cover 3 is located above the paper transport path 22, and below the lift motor 30 for lifting the thermal head 27 and the LF (line feed) for transporting the paper 60.
- a motor 31 is arranged.
- the cooling fan 25 is for forcibly air-cooling the entire sheet 60 that has passed through the erasing roller 23 so that the density of the recorded image by the thermal head 27 does not decrease in the erasing / recording mode.
- a cover opening / closing sensor S4 for detecting opening / closing of the top cover 3 and a paper transport path 22 are disposed along the thermal head 27 and the erasing roller 23.
- a paper detection sensor S1 that detects the state of being conveyed to a specific position is provided. Specifically, this sensor detects the leading edge of the sheet 60 that has been conveyed. Further, as described later, the rear end of the paper 60 is also detected. Further, although not shown, an ambient temperature detection sensor for detecting the ambient temperature ⁇ of the apparatus is provided.
- the elevating motor 30 is connected to the elevating cam 32, and when in the erasing mode, the elevating motor 30 raises a thermal head holder (not shown) that accommodates the thermal head 27 so that the recording mode or erasing is performed. • Lower the thermal head holder when in the recording mode.
- An elliptical lifting cam 32 is in contact with the thermal head holder, and the thermal head holder is pushed up by rotating it so that its long diameter part is at an upward angle, and the short diameter part is upward.
- the thermal head holder is lowered by the spring and its own weight by rotating it to an angle.
- the rotation angle of the lift cam is detected by lift position sensors 33 of two thermal heads 27 arranged at right angles.
- the paper detection sensor S1 is used for both detection of the leading edge of the paper 60 and detection of the trailing edge of the paper 60.
- the detection signal is sent to the control circuit 50, and the control circuit 50 starts to lower the thermal head 27.
- the signal is sent to the control circuit 50, and the number of print lines remaining in the control circuit 50 is the number of printable lines up to the trailing edge of the paper 60 (by the sensor S1 and the thermal head 27). If it is greater than the number of lines based on the distance from the recording position, the remaining number of print lines is set to be equal to or less than the number of printable lines.
- the thermal head 27 is provided with a temperature sensor (not shown) inside, and the sensor output is monitored by the control circuit 50.
- a temperature sensor for the erasing port 23, which also has an aluminum pipe force, is provided, and this sensor output is monitored by the control circuit 50.
- FIG. 3 is a block diagram of the control unit. From the control circuit 50, print data for recording is output to the thermal head 27, and drive signals are output to the lift motor 30 and the LF motor 31 via the drive units 51 and 52. .
- the drive unit 52 that outputs a drive signal to the LF motor 31, the motor drive pulse for the speed VI in the recording mode and the motor drive pulse for the speed V2 in the erasing / recording mode or the erasing mode are Is output.
- a drive signal is output via the drive unit 54 to the heater lamp 53 having a halogen lamp power disposed in the erasing roller 23.
- the thermal head 27 has a head portion 27a, a drive portion 27b, a history control portion 27c, and a temperature sensor S2 for monitoring the temperature of the head portion 27a.
- the temperature detection signal of the temperature sensor S2 is input to the control circuit 50.
- the erasing roller 23 is provided with a temperature sensor S3 for detecting the surface temperature, and this sensor output is controlled. Input to circuit 50.
- control circuit 50 is connected with an operation unit 4, various sensors S, and an interface 55 for connection to a host computer.
- a printer driver is implemented in the host computer.
- the image data is input to the control circuit 50 via the interface 55.
- Printing pulse pattern table TBI is a table that sets a printing pulse pattern per dot (one pixel) based on the conveyance speed of paper 60.
- the conveyance speed is set faster in the recording mode than in the erasing / recording mode.
- the pulse width of the print pulse pattern is set short.
- Figure 4 shows the print pulse pattern for one dot. The horizontal axis represents time, and the vertical axis represents print pulse on / off.
- the pulse width of the print pulse pattern shown in the figure is TE.
- the print pulse pattern is composed of 1 to 20 control sections. As described later, the data (1 or 0) of each control section is transferred from the control circuit 50 to the history control section 27c of the thermal head 27 by DMA. Sent to.
- the timer value table TB2 in Fig. 3 shows the ambient temperature (the control section T (that is, the timer value) based on X. As the value of the control section T increases, the pulse width TE increases). As a result, the printing energy per dot increases.
- the size of energy collected per dot varies depending on the conveyance speed V and the ambient temperature ⁇ .
- the parameters that determine the amount of energy that can be collected per dot are the conveyance speed V and the ambient temperature ⁇ .
- other parameters can be set.
- the heater temperature control table ⁇ 3 connected to the control circuit 50 shows the temperature control table of the heater lamp 53, and the target set temperature and forced OFF time are set based on the ambient temperature a at the start of driving. Set. Detailed control operations using each of these tables Will be described later.
- the history control unit 27c provided in the thermal head 27 controls the printing pulse pattern for the current dot in consideration of the ONZOFF history of each dot on the same line in the transport direction.
- FIG. 5 shows the operation of the history control unit 27c.
- the paper 60 is transported in the paper transport direction indicated by the arrow on the vertical axis in the figure, and the thermal head 27 is on the horizontal axis line.
- the previous dot Al and the previous dot A2 are not printed for A.
- the previous dot B1 and the previous dot B2 are both printed.
- the previous dot C1 is printed, and the previous dot C2 is not printed. Therefore, as shown in Fig. 5 (C), when the print pulse pattern selected in the print pulse pattern table TBI (see Fig. 3) is input to the history control unit 27c this time, Fig.
- the history control unit 27c controls the amount of energy applied this time based on the previous and last energy ONZOFF history. This makes it possible to apply accurate energy to the current dot.
- control circuit 50 Next, the detailed operation of the control circuit 50 will be described with reference to a flowchart.
- FIG. 6 is a flowchart showing the operation when the recording mode is selected. This recording mode is executed when the recording mode or the erasing / recording mode is selected.
- a print pulse pattern within one dot is selected (ST5).
- This print pulse pattern The selection of the pattern is made by referring to the print pulse pattern TBI based on the paper transport speed V at that time. That is, when the recording mode is selected, the speed is VI, and when the erasure 'recording mode is selected, the speed is V2 (V2 VI), so the set mode is either the recording mode or the erasing / recording mode.
- Each print pulse pattern is selected depending on whether or not.
- the print data of the first line is transferred from the control circuit 50 to the head unit 27a (ST6).
- step ST7 the timer value T is set with reference to the timer value table TB2. This timer value T is set based on the ambient temperature ⁇ at that time. As described in Fig. 4, the timer value ⁇ ⁇ ⁇ is used to determine the control interval ⁇ ⁇ of the print pulse pattern.
- the DMA (direct memory access) transfer of the print pulse pattern (including the timer value) determined in ST5 to ST7 is performed to the history control unit 27c. That is, since the control section is 1 to 20, the data (0 or 1) corresponding to each control section T is DMA-transferred to the history control unit 27c 20 times. Since the control circuit 50 has a built-in DMA control unit, when performing this ST8 DMA transfer, the control circuit 50 only needs to set the DMA (actually the CPU). After the setting, the CPU is released immediately. Therefore, other processing can be performed. For this reason, it is very efficient and can contribute to high-speed operation.
- print data for the next line is transferred to the head 27a of the thermal head 27 (preparation for processing the next line). Subsequently, in ST10, the paper 60 is fed by one step, and in ST11, “paper end processing” described later is performed. If printing of all lines has not been completed (ST12), repeat the processing from ST7 onwards. When all lines have been printed, the thermal head 27 is raised (ST13), and the paper 60 is ejected (ST14).
- FIG. 7 shows the control operation of “waiting for temperature decrease” in ST2.
- This upper limit temperature flag is a flag set by “temperature detection” described later. This If the lug is set, the temperature of the thermal head 27 is read by the temperature sensor S2 (ST21) and waits until it becomes 65 ° C or less (ST22). If the temperature falls below 65 ° C, the upper temperature flag is cleared (ST23) and the process returns.
- FIG. 8 shows a control operation of “temperature detection” executed at regular intervals by a timer interrupt.
- the temperature of the thermal head 27 is read by the temperature sensor S2 (ST30), and it is determined whether it is 68 ° C or higher (ST31). If it is lower than 68 ° C, the upper temperature flag is cleared. (ST32) Return. If it is 68 ° C or higher, the upper limit temperature flag is set (ST33) and the process returns.
- FIG. 9 is a diagram showing an outline of the operation of “thermal head lowering”.
- FIG. 9A shows the time when the leading edge of the sheet 60 is detected by the sheet detection sensor S1.
- FIG. 9B shows a state in which the paper 60 is further conveyed and advanced by a distance L1. At this time, the thermal head 27 starts to descend.
- FIG. 9C when the paper 60 reaches the recording position P, at the same time, the head heating portion of the thermal head 27 comes into contact with the leading edge of the paper 60. Thereafter, the printing operation of the image by the thermal head 27 is performed as the paper 60 is conveyed.
- the distance L1 can be changed according to the conveyance speed of the paper 60. If the transport speed is fast, L1 becomes shorter.
- FIG. 10 shows the control operation of “thermal head lowering”.
- N is set as the number of pulses to the lowering start position of the thermal head 27 (represented by the number of conveyance steps of the paper 60 and corresponding to the distance L1).
- the pulse number N varies depending on the recording mode and the erasing 'recording mode because the conveyance speed of the paper 60 is different.
- the transport speed in the recording mode is 50 mmZs
- the transport speed in the erase / record mode is 3 OmmZs.
- the number of pulses N is set larger in the recording mode where the transport speed is faster. . Therefore, in this ST41, the number of pulses N is set according to the set mode. In ST42 and ST43, wait until the set number of pulses N becomes 0.
- the head heating portion of the thermal head 27 and the leading edge of the paper 60 can be accurately matched, and it is necessary to stop the paper 60 at the recording position P. Absent. Further, since the control circuit 50 can know the timing when the leading edge of the paper 60 reaches the recording position P and the head heating portion of the thermal head 27 is in contact with the leading edge of the paper at that time, By applying printing energy based on image data to the head 27, it is possible to prevent the energy from being applied to the thermal head 27 under no load, and at the same time the platen port where the thermal head 27 is rotating. You can also prevent contact with LA 26.
- the print pulse pattern within one dot is selected based on the print pulse pattern table TBI (see Fig. 3).
- the print data of the first line is transferred to the head 27a of the thermal head 27. Is done.
- the horizontal axis is the time axis.
- the print data of the first line corresponds to A of “print data transfer”.
- the conveyance speed of the paper 60 is set to 50 mmZs, and as shown in FIG. 11, a timer interrupt is generated every 2.5 ms and the motor is fed.
- the print energizing section is divided into the right half and the left half of the thermal head 27! /.
- the CP of the control circuit 50 is transferred by DMA transfer of the print pulse pattern at the timing (a).
- U is freed from the software burden associated with printing pulse pattern transmission, so other operations can be performed. For this reason, high-speed processing is possible.
- FIG. 12 shows a state in which the paper detection sensor S 1 has detected the trailing edge of the paper 60.
- the image data storage memory 80 included in the control circuit 50 stores image data to be printed by the thermal head 27 and is updated for each page.
- the remaining print line number R by the thermal head 27 is stored in the RAM. Printing of the thermal head 27 is completed when the remaining number of print lines reaches zero.
- an interval Q between the sensor S 1 and the recording position P indicates the number R of printable lines up to the rear end of the paper 60.
- the thermal head 27 is raised, and thereafter, energy is applied to the thermal head 27.
- the thermal head 27 may come into contact with the rotating platen roller 26! /.
- FIG. 13 is a flowchart showing the control operation of “paper end processing”.
- control circuit 50 drives the lifting motor 30 to raise the thermal head 27 (Fig. 6). ST13).
- This erase mode is executed in the erase mode and the erase / record mode.
- FIG. 14 is a flowchart showing the control operation in the erase mode.
- “erasing roller energization start” is executed. Subsequently, the surface temperature of the erasing roller 23 is measured by the temperature sensor S3.
- the heater temperature control table TB3 is referred to, and the set temperature as a control target corresponding to the temperature (starting temperature) at that time is set. strength Set the control OFF time. Referring to the heater temperature control table TB3, for example, if the starting temperature is 100 ° C or higher, the set value is 147 ° C and the forced OFF time is 100ms. When the starting temperature is between 20 ° C and 100 ° C, the set value is 145 ° C and the forced OFF time is 50ms.
- Step 64 it is determined whether or not the target temperature has been reached. If it has, the conveyance of the paper 60 is started in ST65. In the case of the power erasing 'recording mode in which the thermal head 27 is rising at this time, the thermal head 27 starts to descend when the leading edge of the paper 60 reaches the paper detection sensor S1.
- FIG. 15 shows a block diagram and a waveform diagram for executing “erasing roller energization start” of ST60.
- the commercial power supply 70 is supplied to a heater lamp 53 that also serves as a halogen lamp via a rear tuttle 71 and a triac 72.
- the triac 72 is zero-cross controlled by the zero-cross control circuit 73, and further, a control pulse is input to the zero-cross control circuit 73 from the drive unit 54.
- the zero-cross control circuit 73 is a circuit that performs zero-cross control using the ONZOFF timing of the triac 72 as the zero-cross timing of the power supply voltage. By performing this zero-cross control, an inrush current during energization can be prevented. Further, as shown in FIG.
- a control pulse for gradually increasing the zero-crossing control period is input to the zero-crossing control circuit 73 as shown in FIG.
- the time for energizing the triac 72 can be gradually increased while performing the zero cross control. Accordingly, no current flows through the heater lamp 53 at a stretch, and it is possible to prevent the performance deterioration and damage of parts due to the inrush current flowing, and adverse effects on surrounding electronic devices.
- FIG. 16 is a diagram for explaining the set temperature and forced OFF time set in ST62.
- the horizontal axis represents the time axis
- the vertical axis represents the erasing roller temperature or the heater lamp 53 energization on / off status.
- the degree of temperature rise differs depending on whether the erasing roller temperature at the start of energizing the heater lamp 53 is low or high. Therefore, when energization to the heater lamp 53 is started, a constant set temperature is set before the target temperature, and the start temperature when the heater lamp 53 is energized (the temperature of the erasing roller 23). To change the set temperature (if the start temperature is high, set the set temperature higher). Then, when the set temperature is reached, the power supply is turned off. Also, a fixed forced OFF time is set after reaching the set temperature, and temperature control is enabled after the OFF time has elapsed, and the heater lamp 53 is energized during that forced OFF time. The length varies depending on the temperature at the start of the hour.
- the reason for controlling as described above is that when the temperature at the start of energization of the heater lamp 53 is higher, the amount of heat stored in the erasing roller 23 is larger, so the set temperature can be increased. This is because it is desirable to set the forced OFF time longer.
- the heater temperature control table TB3 in Fig. 3 when the starting temperature is 20 ° C to 100 ° C, the set temperature is set to 145 ° C and the forced OFF time is set to 50ms. If the starting temperature is 100 ° C or higher, set the set temperature to 147 ° C and the forced OFF time to 100 ms.
- FIG. 17 shows the timer interrupt operation of “Erase interrupt start” of ST63 in FIG.
- the measured temperature is normal in ST72, it is determined in ST75 whether the measured temperature exceeds the set value.
- This set value is a value obtained by referring to the heater temperature control table TB3 in ST62 of FIG. If the set value is not over, the heater lamp 53 is turned on in ST76 and the process returns.
- the temperature control is performed on the heater lamp 53 of the erasing roller 23 with respect to the set temperature before the target temperature.
- it waits for the target temperature to be reached.
- the sheet 60 is conveyed. Therefore, according to this control, the heat capacity of the erasing roller 23 is taken into consideration, and the target temperature is more accurately controlled.
- the elevation state of the thermal head 27 is constantly monitored by the elevation position sensor 33 of the thermal head 27, and the thermal head 27 is in the raised position (standby position) or the platen roller.
- the drive signal is not output to the thermal head 27, and the drive voltage to the thermal head 27 is cut off.
- the force for determining whether or not the temperature measurement value of the erasing roller 23 is an abnormal value is performed when the measured temperature itself is abnormal.
- Previously measured temperature value force If the change is abnormal (the differential value is large! /), It is also detected as an abnormal value.
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JP2004213008A JP3996149B2 (ja) | 2004-07-21 | 2004-07-21 | サーマルプリンタ装置 |
JP2004-213008 | 2004-07-21 |
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PCT/JP2005/005835 WO2006008857A1 (ja) | 2004-07-21 | 2005-03-29 | サーマルプリンタ装置 |
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CN102233756A (zh) * | 2010-04-08 | 2011-11-09 | 佳能株式会社 | 能够降低功耗及噪声的控制设备 |
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JP4987366B2 (ja) * | 2006-06-29 | 2012-07-25 | 東芝テック株式会社 | リライトプリンタ |
JP5015702B2 (ja) | 2007-09-11 | 2012-08-29 | 株式会社リコー | 情報記録装置 |
WO2009152309A1 (en) | 2008-06-13 | 2009-12-17 | Brady Worldwide, Inc. | System and method of print media back-feed control for a printer |
JP2010046957A (ja) | 2008-08-22 | 2010-03-04 | Ricoh Co Ltd | 情報記録装置及び記録方法 |
JP5739848B2 (ja) * | 2012-08-03 | 2015-06-24 | 東芝テック株式会社 | 印刷装置及び印刷方法 |
CN113580791B (zh) * | 2021-08-02 | 2023-04-14 | 威海新北洋技术服务有限公司 | 打印设备的控制方法、装置及电子设备 |
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---|---|---|---|---|
JPH0264043U (ja) * | 1988-10-31 | 1990-05-14 | ||
JPH06344614A (ja) * | 1993-06-10 | 1994-12-20 | Makii Eng Kk | シート状包装材のプリント装置 |
JP2001180068A (ja) * | 1999-12-22 | 2001-07-03 | Sato Corp | 印字装置 |
JP2002059573A (ja) * | 2000-08-21 | 2002-02-26 | Fuji Photo Film Co Ltd | 感熱記録装置 |
JP2003251838A (ja) * | 2002-03-06 | 2003-09-09 | Tohoku Ricoh Co Ltd | 記録消去方法・記録消去装置・記録装置 |
-
2004
- 2004-07-21 JP JP2004213008A patent/JP3996149B2/ja not_active Expired - Fee Related
-
2005
- 2005-03-29 WO PCT/JP2005/005835 patent/WO2006008857A1/ja active Application Filing
- 2005-04-12 TW TW94111436A patent/TWI261031B/zh active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0264043U (ja) * | 1988-10-31 | 1990-05-14 | ||
JPH06344614A (ja) * | 1993-06-10 | 1994-12-20 | Makii Eng Kk | シート状包装材のプリント装置 |
JP2001180068A (ja) * | 1999-12-22 | 2001-07-03 | Sato Corp | 印字装置 |
JP2002059573A (ja) * | 2000-08-21 | 2002-02-26 | Fuji Photo Film Co Ltd | 感熱記録装置 |
JP2003251838A (ja) * | 2002-03-06 | 2003-09-09 | Tohoku Ricoh Co Ltd | 記録消去方法・記録消去装置・記録装置 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102233756A (zh) * | 2010-04-08 | 2011-11-09 | 佳能株式会社 | 能够降低功耗及噪声的控制设备 |
Also Published As
Publication number | Publication date |
---|---|
JP2006027216A (ja) | 2006-02-02 |
TWI261031B (en) | 2006-09-01 |
JP3996149B2 (ja) | 2007-10-24 |
TW200604032A (en) | 2006-02-01 |
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