JP4987366B2 - Rewrite printer - Google Patents

Description

  The present invention relates to a rewrite printer that continuously executes an erasing operation and a printing operation on a rewrite medium.

  Conventionally, reversible thermosensitive recording media, so-called rewritable media, have been put into practical use. As described in Patent Document 1, the rewritable medium includes a transparent / cloudy type (organic polymer / low molecular matrix type) type and a coloring type (leuco type). Patent Document 1 also mentions a rewrite printer that performs printing and erasing on a color rewriting medium excellent in visibility.

  The rewrite printer performs both a erasing operation and a printing operation on the rewrite medium by performing a heat treatment according to the characteristics of the rewrite medium. That is, the rewritable medium has a characteristic that an image is erased by slow cooling after heating, and an image is printed by rapid cooling after heating. Therefore, the rewrite printer uses such characteristics of the rewrite medium, erases the image by applying heat to the rewrite medium on which the image is formed, and gradually cooling the rewrite medium. For example, printing based on print data is performed by a thermal print head. In this case, the heating temperature of the rewritable medium by the heating element of the thermal print head is set higher than the heating temperature for erasing, thereby realizing rapid cooling after heating.

Japanese Patent Laid-Open No. 11-277777

  The rewrite printer executes image printing after erasing the image from the rewrite medium. As described above, the image is erased by applying heat to the rewritable medium and gradually cooling it. However, image printing is not performed after the rewritable medium is completely cooled, but is performed on the rewritable medium that has not been cooled. For this reason, when image printing is performed by, for example, a thermal printing method, the temperature of the thermal print head is likely to rise, and the maximum guaranteed temperature is easily reached.

  It is an object of the present invention to prevent the head temperature used for thermal printing from easily reaching the maximum guaranteed temperature even when erasing / printing operations are performed on a plurality of rewritable media.

The rewrite printer according to the present invention includes a sheet holding unit that stacks and holds a plurality of rewrite media that can be printed and erased by heat, a medium path that guides the rewrite medium, and the rewrite medium held by the sheet holding unit as the medium. A feeding section that feeds the passage, a transport section that transports the rewritable medium on the medium path, and an erasure that is disposed on the medium path and that erases by heating the rewritable medium that is transported through the medium path. A printing section that is positioned on the medium path and is located downstream of the erasing section and that performs thermal printing on a rewrite medium conveyed through the medium path, and a head of the printing section A head temperature sensor for detecting temperature, and driving and controlling the feeding unit, the conveying unit, the erasing unit, and the printing unit to perform erasing / printing operations on a plurality of rewrite media. When it is determined that the head temperature detected by the head temperature sensor has reached the first specified temperature that is lower than the maximum guaranteed temperature, the erasing / printing operation for the preceding rewritable medium and the subsequent Means for providing a predetermined standby time between the erasing / printing operation for the rewrite medium to be performed, and the head temperature detected by the head temperature sensor is lower than the maximum guaranteed temperature and higher than the first specified temperature. Means for stopping the erasing / printing operation on the rewrite medium when it is determined that a certain second specified temperature has been reached, and the head detected by the head temperature sensor after stopping the erasing / printing operation on the rewrite medium When it is determined that the temperature is lower than the third specified temperature which is lower than at least the second specified temperature, And means for resuming the erase / printing operation for the body, the.

  According to the present invention, when the head temperature reaches the first specified temperature, the erasing / printing operation for the rewritable medium becomes intermittent, so even if the erasing / printing operation is performed for a plurality of rewritable media. Therefore, it is possible to easily prevent the head temperature used for the thermal printing method from reaching the maximum guaranteed temperature.

  An embodiment of the present invention will be described with reference to FIGS. This embodiment is an example applied to a rewrite printer 101 that performs an erasing operation and a printing operation on a rewrite paper P as a leuco-type rewrite medium. The rewritable paper P realizes the characteristic that an image is erased by slow cooling after heating and an image is printed by rapid cooling after heating on a medium called paper.

  FIG. 1 is a perspective view of the rewrite printer 101. The rewrite printer 101 according to the present embodiment is configured such that each part is housed in a housing 102 in which the width of the rear part is narrower than the width of the front part. In the housing 102, a paper storage unit 201 and an erasing unit 301 are stored in a narrow rear portion (see FIG. 2 for both). A printing portion 401 is accommodated in the front portion of the housing 102 having a large width (see FIG. 2). A paper issue port 103 is formed on the front surface of the housing 102. Further, in FIG. 1, a display unit 104 and an operation unit 105 are disposed in the upper right part of the paper issue port 103. The display unit 104 is a horizontally long liquid crystal display device, and can display information of several lines.

  The rear part of the housing 102 that stores the paper storage unit 201 and the erasing unit 301 and the front part of the housing 102 that stores the printing unit 401 may be configured to be separable.

  FIG. 2 is a vertical side view of the rewrite printer 101. Inside the rewrite printer 101, a paper path 106 as a medium path for guiding a rewrite paper P as a rewrite medium is formed. The paper path 106 communicates the paper storage unit 201 and the paper issue port 103, and an erasing unit 301 and a printing unit 401 are arranged in the middle thereof. The arrangement position of the erasing unit 301 is on the upstream side, and the arrangement position of the printing unit 401 is on the downstream side.

  The paper storage unit 201 is mainly configured by a lifter 202 as a paper holding unit provided so as to be movable up and down. The lifter 202 can place and support a plurality of rewritable sheets P in a stacked state. The lifter 202 is driven up and down by a lifter driving unit 203 (see FIG. 4) made of an actuator.

  The sheet storage unit 201 is provided with a sheet feeding mechanism 204 as a feeding unit that feeds the uppermost rewrite sheet P placed on the lifter 202 to the sheet path 106. The paper feed mechanism 204 is mainly composed of a pickup roller 205 and a reverse type separation mechanism 206. The pickup roller 205 applies a feeding force to the uppermost rewrite paper P placed on the lifter 202 by its rotation. The separation mechanism 206 separates the lower rewrite paper P that is double-fed by the rotation of the pickup roller 205 so that only the uppermost rewrite paper P is fed to the paper path 106. Such sheet separation is performed by rotation in the direction opposite to the feeding direction of the reverse roller 207 included in the separation mechanism 206. However, as the separation mechanism 206, other methods such as a separation claw method and a gate method may be adopted. The pickup roller 205 and the reverse roller 207 are driven to rotate by a feeding / conveying unit 208 (see FIG. 4) made of an actuator.

  The erasing unit 301 is mainly composed of a heat roller 302 and a press roller 303 that are arranged to face each other with the paper path 106 interposed therebetween. The heat roller 302 is disposed above the paper path 106 and the press roller 303 is disposed below the paper path 106. The heat roller 302 incorporates a heater 304 (see FIG. 4) that generates heat when energized, and can heat the rewritable paper P conveyed through the paper path 106. The press roller 303 is biased by the heat roller 302 via the paper path 106.

  The printing unit 401 is mainly configured by a line-type thermal print head 402 and a platen 403 that are arranged to face each other with the paper path 106 interposed therebetween. Such an arrangement position of the printing unit 401 is in the vicinity of the sheet issuing port 103.

  The rewrite printer 101 includes a transport unit 107 for transporting the rewrite paper P fed to the paper path 106 by the paper feed mechanism 204. The transport unit 107 is mainly configured by a pair of transport roller pairs 108 provided in a plurality of pairs along the paper path 106. Each pair of conveying rollers 108 is disposed to face each other via the paper path 106, and one roller member is urged by the other roller member. Then, the other roller member is driven and rotated by a feeding / conveying section 208 (see FIG. 4) made of an actuator, and the one roller member rotates following this.

  The paper path 106 will be described in more detail. The paper path 106 is configured by opposing plate-like members 109 that form a pair of structures. These plate-like members 109 are both formed of a plate-like sheet metal, and form a paper passage 106 on a surface facing each other. Of course, the pair of plate-like members 109 are in contact with the paper path 106 at the positions where the heat roller 302 and press roller 303 constituting the erasing unit 301 and the conveyance roller pair 108 constituting the conveyance unit 107 are arranged. I am trying to let you.

  As sensors, an environmental temperature sensor 151, a paper temperature sensor 152 as a medium temperature sensor, a paper feed sensor 153, and a paper registration sensor 154 are shown in FIG. The environmental temperature sensor 151 is disposed on the side wall of the paper storage unit 201. The paper temperature sensor 152 is disposed between the erasing unit 301 and the printing unit 401 in the paper path 106. The arrangement position is a position between the first and second transport roller pairs 108 from the upstream side of the paper path 106 among the transport roller pairs 108 arranged in three pairs. Both the environmental temperature sensor 151 and the paper temperature sensor 152 are temperature sensors. The paper feed sensor 153 is located immediately after the separation mechanism 206 in the paper path 106 and is disposed downstream thereof. The sheet registration sensor 154 is positioned in the sheet path 106 immediately before the printing unit 401 and disposed upstream thereof. Both the paper feed sensor 153 and the paper registration sensor 154 are transmissive optical sensors.

  FIG. 3 is a vertical side view showing a mounting structure of the paper temperature sensor 152. The paper temperature sensor 152 is configured by mounting a thermistor 156 on a circuit board 155. A cutout 110 is formed in the upper plate-shaped member 109 at a position where the paper temperature sensor 152 is disposed, and a screw hole 111 is cut in the vicinity of the periphery. The notch portion 110 has a role of exposing the paper path 106, and may have any shape as long as the necessary strength of the upper plate-like member 109 is not impaired as long as this role can be fulfilled. The sheet temperature sensor 152 is screwed to the upper plate member 109 so that the thermistor 156 faces the sheet path 106 through the notch 110. Screwing is performed by screwing a screw 112 inserted through an insertion hole 157 formed in the circuit board 155 into a screw hole 111 formed in the upper plate member 109 and tightening. Thus, the paper temperature sensor 152 can detect the temperature of the rewritten paper P conveyed through the paper path 106 by the thermistor 156 that faces the paper path 106 via the notch 110.

  FIG. 4 is a block diagram illustrating a hardware configuration. The rewrite printer 101 has an information processing unit 501 as hardware resources for executing information processing. The information processing unit 501 is configured by connecting an SRAM 503, a flash ROM 504, and an EEPROM 505 via a bus line 506 to a CPU 502 that executes various arithmetic processes and centrally controls each unit. The SRAM 503 stores variable data such as temporary storage data so that it can be rewritten, and is used as a work area. The flash ROM 504 stores various setting values and various tables in a rewritable manner, and can store the stored contents without power supply. The EEPROM 505 stores a control program or the like in a rewritable manner and can hold the stored contents without power feeding.

  As hardware resources controlled by the information processing unit 501 or used for such control, each unit such as the erasing unit 301 and the printing unit 401 is connected to the information processing unit 501. More specifically, a display unit 104, an operation unit 105, a lifter driving unit 203 serving as a driving source for the lifter 202, and a feeding / conveying unit 208 serving as a driving source for the paper feeding mechanism 204 and the conveying unit 107 are connected via a bus line 506. It is connected to the information processing unit 501. In addition, a heater controller 305 that controls a heater 304 constituting the erasing unit 301 is provided, and the heater controller 305 is connected to the information processing unit 501 via a bus line 506. In addition, a head control circuit 404 that controls the thermal print head 402 constituting the printing unit 401 is provided, and this head control circuit 404 is connected to the information processing unit 501 via the bus line 506. Further, a sensor input circuit 158 that captures signals from the sensors is provided, and the sensor input circuit 158 is also connected to the information processing unit 501 via the bus line 506. As these sensors, in addition to the environmental temperature sensor 151, the paper temperature sensor 152, the paper feed sensor 153, and the paper registration sensor 154, a heater temperature sensor 159 and a head temperature sensor 160 are also provided. The heater temperature sensor 159 is built in the heat roller 302 so as to be positioned in the vicinity of the heater 304 constituting the erasing unit 301. The head temperature sensor 160 is mounted on the thermal print head 402 constituting the printing unit 401.

  In addition, a communication interface 507 for realizing communication between the rewrite printer 101 and an external device is connected to the information processing unit 501 via a bus line 506. The rewrite printer 101 receives print data and a print command from an external device via the communication interface 507.

  In such a configuration, when print data accompanied by a print command is received from an external device via the communication interface 507, the CPU 502 controls driving of each unit while referring to the output signals of the sensors, and converts the received print data into the received print data. An erasing operation and a printing operation are executed based on this. That is, the lifter driving unit 203 is controlled to raise the lifter 202 until the uppermost rewrite paper P comes into contact with the pickup roller 205, and then the feeding / conveying unit 208 is controlled to rotate and drive the pickup roller 205 and the reverse roller 207. Then, the uppermost rewritten paper P is separated and fed to the paper path 106. The uppermost rewritable paper P separated and fed to the paper path 106 is transported through the paper path 106 by a transport roller pair 108 that is rotated under the control of the paper feeding and transporting unit 208. Then, the CPU 502 gives a drive signal to the heater controller 305 at an appropriate timing to cause the heater controller 305 to drive the heater 304 to generate heat. As a result, the surface on the image forming side of the rewritable paper P passing through the erasing unit 301 is heated by the heat roller 302, and the image formed on the rewritable paper P is erased by slow cooling after passing through the erasing unit 301. . The CPU 502 controls the head control circuit 404 at an appropriate timing, and performs thermal printing by the thermal print head 402 on the rewritten paper P after the formed image is erased based on the received print data. At this time, the amount of heat applied to the rewrite paper P by the heating element of the thermal print head 402 for printing is much larger than the amount of heat applied by the heater 304 of the heat roller 302 to the rewrite paper P for erasing. In other words, the heating temperature for the rewritable paper P by the heating element of the thermal print head 402 is much higher than the heating temperature for the rewritable paper P by the heater 304 of the heat roller 302. As a result, the rewritten paper P after printing by the thermal print head 402 is rapidly cooled after heating, and the rewritten paper P is printed based on the received print data. The rewritten paper P after printing is issued from the paper issuing port 103.

  As described above, in the rewrite printer 101 of the present embodiment, after the image is erased by the erasing unit 301 on the rewrite paper P, the image printing by the printing unit 401 is executed. For this reason, the rewritable paper P after image erasure conveyed to the thermal print head 402 is heated by the heating roller 302 of the erasing unit 301 and is gradually cooled, but it is still in a considerably high temperature state. It has become. For this reason, the temperature of the thermal print head 402 tends to rise. Therefore, in the present embodiment, a contrivance is made so that the temperature of the thermal print head 402 does not reach its maximum guaranteed temperature (for example, 70 ° C.). To that end, processing executed by the CPU 502 of the information processing unit 501 will be described with reference to the flowcharts of FIGS.

  FIG. 5 is a flowchart showing a flow of operation mode setting processing. The rewrite printer 101 feeds the rewrite paper P stacked and held on the lifter 202 to the paper path 106 one after another depending on the print data and its accompanying data received via the communication interface 507, and continuously performs the erasing / printing operation. Will be done. For example, when the print data extends over a plurality of pages or when a plurality of copies are designated, such a continuous operation is performed. The operation mode for causing the rewrite printer 101 to execute such a continuous operation is the continuous mode.

  The CPU 502 initially sets the operation mode to the continuous mode (step S11). Then, the output of the head temperature sensor 160 is taken in, and it is determined whether or not the head temperature has reached 60 ° C., which is the first specified temperature (step S12). Here, it is assumed that the maximum guaranteed temperature of the thermal print head 402 is 70 ° C. Therefore, a temperature that allows a margin of 10 ° C. with respect to the maximum guaranteed temperature of 70 ° C. is handled as the first specified temperature.

  When determining that the head temperature has exceeded 60 ° C. (Y in step S11), the CPU 502 determines whether the head temperature has not exceeded 65 ° C. (step S12). In this case, 65 ° C. is a second specified temperature that is higher than the first specified temperature. When the CPU 502 determines that the head temperature exceeds 60 ° C. but does not exceed 65 ° C. (N in step S13), the CPU 502 sets the operation mode to the intermittent mode (step S14). After the intermittent mode is set, the process returns to the determination in step S13.

  If the CPU 502 determines in the process of step S13 that the head temperature has exceeded 65 ° C. (Y in step S13), the CPU 502 sets the operation mode to the stop mode (step S15). Then, the process proceeds to the determination of whether or not the head temperature has fallen below 60 ° C. (step S16). If it is determined that the head temperature has fallen (Y in step S16), the process returns to step S11 to set the operation mode to the continuous mode. 60 ° C. used as the determination criterion in step S16 is a temperature used as the third specified temperature, and may be at least lower than 65 ° C., which is the second specified temperature, and is the first specified temperature 60. It is not necessary to agree with ° C. For example, the temperature may be higher than the first specified temperature of 60 ° C. such as 61 ° C. or 62 ° C., or may be lower than the first specified temperature of 60 ° C. such as 55 ° C. .

  FIG. 6 is a flowchart showing a flow of processing for erasing / printing operation in the continuous mode. In the continuous mode, the CPU 502 controls each unit (for example, the erasing unit 301 and the printing unit 401) for performing the erasing / printing operation on the rewrite paper P with respect to the erasing / printing operation execution module in the operation program. A print command for instructing to perform the erasing / printing operation on one rewritable paper P is output (step S101). As a result, the erasing / printing operation execution module controls each unit, and the erasing / printing operation for one rewritable paper P is started.

  Subsequently, when the CPU 502 confirms that the paper feed sensor 153 is turned on (Y in step S102), the CPU 502 determines whether or not a time-up set based on the time required for the rewrite paper P to pass through the paper feed sensor 153 is established. If the time is up (Y in step S103), error processing is executed (step S104). If an off signal is obtained from the paper feed sensor 153 before the time is up (N in Step S103, Y in Step S105), it is determined whether or not there is a mode change until the end of printing (Y in Step S106) ( If there is no mode change (N in step S107), the process returns to step S101. As a result, a print command for the subsequent rewritable paper P is output to the erase / print operation execution module in the operation program, and a continuous erase / print operation is performed.

  If the CPU 502 determines the end of printing in step S106 (Y in step S106) or the mode change is determined in step S107 (Y in step S107), the CPU 502 ends the continuous mode processing.

  FIG. 7 is a flowchart showing a flow of processing for erasing / printing operation in the intermittent mode. In the intermittent mode, the CPU 502 outputs a print command for instructing the erasure / print operation to be performed on one rewritable paper P to the erase / print operation execution module in the operation program (step S201). As a result, the erasing / printing operation execution module controls each unit, and the erasing / printing operation for one rewritable paper P is started.

  Subsequently, when the CPU 502 confirms that the paper feed sensor 153 is turned on (Y in step S202), the CPU 502 determines whether or not there is a time-up set based on the time required for the rewrite paper P to pass through the paper feed sensor 153. If the time is up (Y in step S203), error processing is executed (step S204). If an off signal is obtained from the paper feed sensor 153 before the time is up (N in step S203, Y in step S205), display control (not shown) of the display unit 104 is performed until the end of printing (Y in step S206). The display is displayed on the display unit 104 by controlling the circuit to indicate that it is in the intermittent mode (step S207), and it is determined whether or not the specified standby time has elapsed (step S208). The specified standby time determined to be elapsed in step S208 realizes an intermittent erasing / printing operation in the intermittent mode. If the CPU 502 determines that the specified standby time has elapsed (Y in step S208), the CPU 502 determines whether or not there is a mode change (step S209). If there is no mode change (N in step S209), the CPU 502 returns to step S201. As a result, a print command for the subsequent rewritable paper P is output to the erasure / print operation execution module in the operation program, and an intermittent erasure / print operation is performed.

  If the CPU 502 determines the end of printing in step S206 (Y in step S206), or determines the mode change in step S209 (Y in step S209), the CPU 502 ends the intermittent mode processing.

  FIG. 8 is a flowchart showing the flow of processing in the stop mode. In the stop mode, the CPU 502 outputs a print standby command for instructing to stop the erase / print operation to the erase / print operation execution module in the operation program (step S301). As a result, the erasing / printing operation execution module enters an operation standby state.

  Subsequently, the CPU 502 controls a display control circuit (not shown) of the display unit 104 to display a display indicating that it is in the stop mode on the display unit 104 until the end of printing (Y in Step S302) (Step S302). S303), it is determined whether or not there is a mode change (step S304). If there is no mode change (N in step S304), the process returns to step S303.

  If the CPU 502 determines the end of printing in step S302 (Y in step S302) or determines the mode change in step S304 (Y in step S304), the CPU 502 ends the stop mode process.

  As described above, the rewrite printer 101 first starts operating in the continuous mode. For this reason, the head temperature of the thermal print head 402 increases as the number of rewritable sheets P on which erasing / printing operations are performed increases. When the head temperature exceeds 60 ° C. (first specified temperature) (Y in step S12 in FIG. 5), the rewrite printer 101 is driven in the intermittent mode. Thereby, an increase in head temperature is suppressed. If the head temperature falls below 60 ° C. as a result of being driven in the intermittent mode (N in step S12 in FIG. 5), the rewrite printer 101 is again driven in the continuous mode. Even if the head temperature does not fall below 60 ° C. (Y in step S12 in FIG. 5), because of the intermittent drive, the thermal print head 402 is cooled by the standby time (see step S208 in FIG. 7). Temperature rise is suppressed. If the head temperature still rises and exceeds 65 ° C. (second specified temperature) (Y in step S13 in FIG. 5), the rewrite printer 101 enters the stop mode, and the erasing / printing operation is stopped. This reliably prevents the temperature of the thermal print head 402 from reaching its maximum guaranteed temperature (for example, 70 ° C.). When the thermal print head 402 is cooled by the operation stop and the head temperature falls below 60 ° C. (third specified temperature) (Y in step S16 in FIG. 5), the rewrite printer 101 is again in the continuous mode. Driven.

  Thus, according to the rewrite printer 101 of the present embodiment, even if the erasing / printing operation is performed on the plurality of rewrite sheets P, it is possible to reliably prevent the head temperature from reaching the maximum guaranteed temperature. it can. In addition, since the continuous mode, the intermittent mode, and the stop mode are appropriately selected according to the head temperature, it is possible to prevent the efficient erasing / printing operation on the rewrite paper P from being impaired.

  In the rewrite printer 101 according to the present embodiment, an example in which the sheet storage unit 201, the erasing unit 301, and the printing unit 401 are provided in the single housing 102 is shown. However, these units are stored in separate housings. Alternatively, the paper storage unit 201 and the erasing unit 301 may be stored in the same housing, and the printing unit 401 may be stored in a different housing. When the housing has a plurality of separate structures, the individual housings can be connected, and the paper storage unit 201, the erasing unit 301, and the printing unit 401 can be connected by the connection. In such a case, a plurality of CPUs may be provided in units of individual housings, and these CPUs may be connected via a communication line for control.

1 is a perspective view of a rewrite printer showing an embodiment of the present invention. It is a vertical side view of a rewrite printer. FIG. 6 is a longitudinal side view showing a mounting structure of a paper temperature sensor (medium temperature sensor). It is a block diagram which shows a hardware configuration. It is a flowchart which shows the flow of the setting process of an operation mode. It is a flowchart which shows the flow of the process for the erasing / printing operation in continuous mode. It is a flowchart which shows the flow of the process for the erasing / printing operation in intermittent mode. It is a flowchart which shows the flow of a process in stop mode.

Explanation of symbols

106 ... paper path (medium path), 107 ... conveying section, 160 ... head temperature sensor, 202 ... lifter (paper holding section), 204 ... feeding mechanism (feeding section), 301 ... erasing section, 401 ... printing section, P ... Rewrite paper (rewrite medium)

Claims (3)

A paper holding unit that holds a plurality of rewritable media that can be printed and erased by heat;
A medium path for guiding the rewritable medium;
A feeding unit that feeds the rewritable medium held in the paper holding unit to the medium path;
A transport unit for transporting a rewritable medium on the medium path;
An erasing unit that is disposed on the medium path and erases the rewritable medium conveyed through the medium path by heating;
A printing unit that is located on the downstream side of the erasing unit and disposed on the medium path, and that performs thermal printing on a rewritable medium conveyed through the medium path;
A head temperature sensor for detecting a head temperature of the printing unit;
Means for driving and controlling the feeding section, the transport section, the erasing section, and the printing section, and continuously performing an erasing / printing operation on a plurality of rewrite media;
When it is determined that the head temperature detected by the head temperature sensor has reached the first specified temperature that is lower than the maximum guaranteed temperature, the erasing / printing operation for the preceding rewritable medium and the erasing for the subsequent rewritable medium are performed. / Means for providing a specified waiting time between printing operations;
When it is determined that the head temperature detected by the head temperature sensor has reached the second specified temperature that is lower than the maximum guaranteed temperature and higher than the first specified temperature, erasing / printing on the rewrite medium Means for stopping the operation;
When it is determined that the head temperature detected by the head temperature sensor has fallen below at least a third specified temperature that is lower than the second specified temperature after stopping the erasing / printing operation on the rewrite medium, Means for restarting the erasing / printing operation on the medium;
Rewrite printer with. A display for displaying information;
In a case where a predetermined standby time is provided between the erasing / printing operation for the preceding rewritable medium and the erasing / printing operation for the succeeding rewritable medium, means for displaying a notification to that effect on the display unit;
A rewritable printer according to claim 1. A display for displaying information;
When erasing / printing operation on the rewritable medium is stopped, means for displaying a notification to that effect on the display unit;
A rewritable printer according to claim 1 .

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