JP2006035478A - Processor and processing system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a processor and a processing system ensuring optimal writing quality even in case of different type of sheet medium. <P>SOLUTION: A writing unit 10 comprises a line head 20 for irradiating the surface of a sheet medium 100 selectively with corona ion flow, a reference electrode 30, and a means 40 for judging the type of the sheet medium 100. A judging means 40 judges the type of the sheet medium 100 inserted into the writing unit 10. Based on the results from the judging means 40, the line head 20 generates a predetermined electric field for writing/erasing visible information on/from the sheet medium 100. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a processing apparatus and a processing system for generating an electric field for writing or erasing visible information on a sheet medium whose optical characteristics reversibly change due to the action of the electric field.

  Conventionally, as this type of device, for example, a device described in (Patent Document 1) is known. FIG. 15 is a diagram showing a configuration of a conventional apparatus described in (Patent Document 1).

  In FIG. 15, a circuit board 3 having a plurality of pixel electrodes is disposed on the outer periphery of the erasing drum 2, and a common electrode 5 having a plurality of pixel electrodes is disposed on the outer periphery of the erasing drum 4. ing. A circuit substrate 7 having a plurality of pixel electrodes is disposed on the outer periphery of the writing drum 6, and a common electrode 9 having a plurality of pixel electrodes is disposed on the outer periphery of the writing drum 8. .

  In such an apparatus, when the sheet medium 1 whose optical characteristics are reversibly changed by the action of an electric field is conveyed in the direction of arrow A in the figure, the common electrode 5 on the erasing drum 4 is set to 0 volts, By applying a negative voltage to each pixel electrode of the circuit board 3 on the erasing drum 2, an electric field is formed from the common electrode toward the pixel electrode. The information written on the sheet medium 1 is erased by forming the electric field in this way.

Next, the common electrode 9 on the writing drum 8 was set to 0 volt, and a positive voltage corresponding to information was given to each pixel electrode of the circuit board 7 on the writing drum 6 to give a positive voltage. An electric field is formed from the pixel electrode toward the common electrode. Predetermined information is displayed on the sheet medium 1 by forming an electric field in this way.
JP 2000-127478 A

  However, since the apparatus described in the above (Patent Document 1) has a structure capable of writing and erasing a specific sheet medium, the quality of writing and erasing is different for a sheet medium different from the specific sheet medium. In some cases, writing and erasing could not be performed.

  That is, in the apparatus described in the above (Patent Document 1), the electric field strength required for writing and erasing differs depending on the sheet medium due to the difference in the manufacturer of the sheet medium, so the quality of writing and erasing is degraded. It was.

  Further, even if the sheet medium is related to the same manufacturer, writing and erasing cannot be performed on sheet media having different display methods. For example, even a device capable of writing and erasing the first sheet medium could not be written or erased for the second sheet medium having a display method different from the display method of the first sheet medium. .

  Furthermore, even if the sheet medium is the same display method or the same manufacturer, the electric field strength required for writing and erasing differs depending on the version of the sheet medium, so that the quality of writing and erasing deteriorated. .

  As described above, the apparatus described in the above (Patent Document 1) has a problem that it is compatible with only a specific sheet medium and lacks versatility.

  SUMMARY An advantage of some aspects of the invention is that it provides a processing apparatus and a processing system that can ensure optimum writing quality even with different types of sheet media.

  It is another object of the present invention to provide a processing apparatus and a processing system that can ensure optimum erasure quality even with different types of sheet media.

  In order to solve this problem, the processing apparatus of the present invention includes an electric field generating means for generating a predetermined electric field for writing visible information on a sheet medium whose optical characteristics reversibly change due to the action of the electric field. The processing apparatus includes a determination unit that determines a type of the sheet medium, and the electric field generation unit generates the predetermined electric field corresponding to the type of the sheet medium determined by the determination unit. Is.

  In order to solve this problem, the processing apparatus of the present invention generates a predetermined electric field for erasing visible information written on a sheet medium whose optical characteristics reversibly change due to the action of the electric field. A processing apparatus having an electric field generation unit, comprising: a determination unit that determines a type of the sheet medium, wherein the electric field generation unit generates the predetermined electric field corresponding to the type of the sheet medium determined by the determination unit It is set as the structure which carries out.

  In a preferred embodiment of the present invention, the electric field generating means generates an electric field by an electrostatic image by controlling irradiation of corona ions.

  In a further preferred aspect of the present invention, the electric field generating means controls the distance between the sheet medium and an irradiation reference position to irradiate corona ions based on the determination result by the determining means, thereby The predetermined electric field corresponding to the type of the sheet medium based on the determination result is generated.

  In a further preferred aspect of the present invention, the electric field generating means controls the electric field application time to the sheet medium based on the result of determination by the determining means, so that the type of sheet medium based on the result of determination by the determining means The predetermined electric field corresponding to is generated.

  In a further preferred aspect of the present invention, the electric field generating means controls the writing speed of information visible to the sheet medium based on the result of determination by the determining means, so that the sheet based on the result of determination by the determining means The predetermined electric field corresponding to the type of medium is generated.

  In a further preferred aspect of the present invention, the electric field generating means controls the erasing speed of visually observable information on the sheet medium based on the result of determination by the determination means, so that the sheet based on the result of determination by the determination means The predetermined electric field corresponding to the type of medium is generated.

  In a further preferred aspect of the present invention, there is provided detection means for detecting an optical characteristic of the sheet medium, and the determination means determines the type of the sheet medium based on a detection result by the detection means.

In order to solve this problem, a processing system of the present invention includes a sheet medium whose optical characteristics are reversibly changed by the action of an electric field, and the processing apparatus according to any one of claims 1 to 8. This is a configuration.

  In order to solve this problem, a processing system of the present invention includes a sheet medium whose optical characteristics are reversibly changed by the action of an electric field, and the processing apparatus according to claim 1. The sheet medium stores unique information of its own sheet medium, and includes first communication means for performing wireless communication of the unique information with the outside, and the processing apparatus includes: A second communication unit configured to perform wireless communication of the unique information with the first communication unit, and the determination unit is configured to perform the determination based on the unique information acquired by the wireless communication performed by the second communication unit. In this configuration, the type of sheet medium is determined.

  According to the present invention, the electric field generation unit generates a predetermined electric field corresponding to the type of the sheet medium based on the result of the determination by the determination unit. An effective effect that quality or erasure quality can be secured is obtained.

  Further, according to the present invention, the electric field generating unit generates a predetermined electric field corresponding to the type of the sheet medium based on the determination result by the determination unit that determines the type of the sheet medium based on the detection result by the detection unit. Since it is generated, it is possible to obtain an effective effect that the optimum writing quality or erasing quality can be ensured even with different types of sheet media.

  Further, according to the present invention, in the writing device, the second communication unit acquires the unique information of the sheet medium by communicating with the first communication unit of the sheet medium, and the electric field generating unit is configured to transmit the second communication unit. Since the predetermined electric field corresponding to the type of the sheet medium is generated based on the result of the determination by the determination unit that determines the type of the sheet medium based on the unique information acquired by wireless communication by the Even in the case of a sheet medium, an effective effect that the optimum writing quality or erasing quality can be ensured can be obtained.

  According to the first aspect of the present invention, there is provided a processing apparatus having an electric field generating means for generating a predetermined electric field for writing visible information on a sheet medium whose optical characteristics reversibly change by the action of the electric field. The apparatus includes a determination unit that determines the type of the sheet medium, and the electric field generation unit is a processing device that generates a predetermined electric field corresponding to the type of the sheet medium determined by the determination unit. Since the predetermined electric field corresponding to the type of the sheet medium is generated based on the result of the determination by the determination means, there is an effect that the optimum writing quality can be ensured even with different types of sheet media. .

  According to a second aspect of the present invention, there is provided an electric field generating means for generating a predetermined electric field for erasing visible information written on a sheet medium whose optical characteristics reversibly change by the action of the electric field. A determination unit that determines a type of the sheet medium, and the electric field generation unit is a processing unit that generates a predetermined electric field corresponding to the type of the sheet medium determined by the determination unit. Since the generation unit generates the predetermined electric field corresponding to the type of the sheet medium based on the result of determination by the determination unit, it is possible to ensure optimum erasure quality even for different types of sheet media. It has the action.

  The invention according to claim 3 of the present invention is the processing apparatus according to claim 1 or 2, wherein the electric field generating means generates an electric field by an electrostatic image by controlling irradiation of corona ions. Even if it is a different sheet medium, the optimum writing quality or erasing quality can be ensured.

  According to a fourth aspect of the present invention, in the invention according to any one of the first to seventh aspects, the electric field generating means irradiates the sheet medium and corona ions based on a result of determination by the determining means. Therefore, it is a processing device that generates a predetermined electric field corresponding to the type of sheet medium based on the result of determination by the determining means by controlling the distance from the irradiation reference position, and is optimal even for different types of sheet media. This has the effect of ensuring the writing quality or the erasing quality.

  According to a fifth aspect of the present invention, in the invention according to the first or second aspect, the electric field generating means controls the electric field application time to the sheet medium based on the result of determination by the determining means, thereby determining means. Is a processing device that generates a predetermined electric field corresponding to the type of sheet medium based on the result of the determination, and has the effect of ensuring optimum writing quality or erasing quality even with different types of sheet media .

  According to a sixth aspect of the present invention, in the first aspect of the present invention, the electric field generating means determines the visual information writing speed on the sheet medium based on the result of determination by the determining means. The processing apparatus generates a predetermined electric field corresponding to the type of sheet medium based on the result of determination by the means, and has an effect that optimum writing quality can be ensured even for different types of sheet media.

  According to a seventh aspect of the present invention, in the invention according to the second aspect, the electric field generating means makes a determination by controlling the erasing speed of visible information on the sheet medium based on a result of the determination by the determining means. The processing apparatus generates a predetermined electric field corresponding to the type of sheet medium based on the result of determination by the means, and has an effect that an optimum erasing quality can be ensured even with different types of sheet media.

  The invention according to claim 8 of the present invention is the invention according to any one of claims 1 to 7, further comprising detection means for detecting an optical characteristic of the sheet medium, wherein the determination means is detected by the detection means. A processing apparatus that determines a type of a sheet medium based on a result, wherein the electric field generation unit determines the type of the sheet medium based on a detection result of the sheet medium based on a determination result of the determination unit that determines a type of the sheet medium. Since the predetermined electric field corresponding to the type is generated, the optimum writing quality or erasing quality can be ensured even with different types of sheet media.

  The invention according to claim 9 of the present invention comprises a sheet medium whose optical characteristics reversibly change by the action of an electric field, and a processing apparatus according to any one of claims 1 to 8; This is a processing system that has the effect of ensuring optimum writing quality or erasing quality even with different types of sheet media.

  The invention according to claim 10 of the present invention is a processing system comprising a sheet medium whose optical characteristics reversibly change due to the action of an electric field, and the processing apparatus according to any one of claims 1 to 7. The sheet medium stores unique information of the own sheet medium and includes first communication means for performing wireless communication of the unique information with the outside. The processing apparatus includes the first communication means and the first communication means. A second communication means for performing wireless communication of unique information between the two, and the determination means is a processing system for determining the type of sheet medium based on the unique information acquired by wireless communication by the second communication means. In the writing apparatus, the second communication unit acquires the unique information of the sheet medium by communication with the first communication unit of the sheet medium, and the electric field generation unit is acquired by wireless communication by the second communication unit. Based on specific information Since the predetermined electric field corresponding to the type of the sheet medium is generated based on the result of the determination by the determination unit that determines the type of the sheet medium, the optimum writing quality or It has the effect of ensuring erasure quality.

  Hereinafter, the best mode for carrying out the present invention will be described more specifically with reference to the drawings. Here, in the accompanying drawings, the same reference numerals are given to the same members, and duplicate descriptions are omitted. In addition, since description here is the best form by which this invention is implemented, this invention is not limited to the said form.

(Embodiment 1)
1 is a perspective view showing a configuration of a writing apparatus according to Embodiment 1 of the present invention, FIG. 2 is a diagram showing a line-type head of the writing apparatus shown in FIG. 1, and FIG. 3 is a control of the writing apparatus shown in FIG. FIG. 4 is a diagram illustrating the ion irradiation time with respect to the time per line for the various sheet media in the first embodiment, and FIG. 5 is a diagram showing the ion irradiation time corresponding to the ion irradiation time shown in FIG. FIG. 6 is a diagram showing a state of an electrostatic image formed on each sheet medium when irradiated with ions, and FIG. 6 is a diagram showing an application example of the writing apparatus according to the first embodiment.

  In FIG. 1, a writing device (processing device) 10 writes and erases visible information on a sheet medium 100 whose optical characteristics reversibly change due to the action of an electric field. A line-type head 20 that selectively irradiates the surface of the sheet, a reference electrode 30, and a determination means 40 that determines the type of the sheet medium 100.

  At the time of writing or erasing, the sheet medium 100 is inserted into the writing device 10 so as to pass (carry) between the line type head 20 and the reference electrode 30.

  The line-type head (electric field generating means) 20 generates a predetermined electric field for writing visible information on the sheet medium 100 and also deletes the visible information written on the sheet medium 100. The electric field is generated. The predetermined electric field varies depending on the type of the sheet medium 100, and is a value based on the result of determination by the determination unit 40.

  As shown in FIG. 2A, the line-type head 20 includes an ion source 21 that generates corona ions, a corona wire 22, control electrodes 23 and 24 that control corona ions generated from the ion source 21, and control. A power supply 25 and a bias power supply 26 are provided.

  The ion source 21 generates corona ions by applying a high voltage to the corona wire 22.

  The control electrode 23 and the control electrode 24 are disposed at a predetermined interval, and are configured so that the corona ions 50 can pass (pass) through the hole 27 provided in the center of these control electrodes. Further, the control electrode 23 and the control electrode 24 are arranged so as to be movable in the vertical (vertical) direction with a predetermined interval therebetween. For example, the line-type head 20 is configured by arranging a plurality of such control electrodes 23 and 24 at a predetermined interval.

  The control power supply 25 switches the switch 25a to the contact point 25b so that the control electrode 23 is set to a minus (−) of the DC power supply, while the control electrode 24 is set to a plus (+) of the DC power supply. By switching the switch 25a to the contact point 25c, the control electrode 23 is set to the plus (+) of the DC power supply, while the control electrode 24 is set to the minus (−) of the DC power supply.

  The bias power source 26 applies a minus (−) bias voltage to the control electrode 24. The reference electrode 30 is grounded and set to a potential of 0V.

  Next, the control system of the writing apparatus 10 will be described with reference to FIG.

  In FIG. 3, the control power supply 25 is configured to switch and control the switch 25a to the contact 25b or the contact 25c as described above.

  The moving means 60 controls the movement in the vertical (vertical) direction with the control electrode 23 and the control electrode 24 having passed a predetermined interval.

  The conveying means 70 conveys the sheet medium 100 inserted into the writing apparatus 10 in the direction of arrow A in FIG. 1 and is configured so that the conveying speed with respect to the sheet medium 100 can be varied.

  The control unit 80 includes a storage unit 81 that stores control information for each type information of the sheet medium 100 in a table format, for example, and controls the control power supply 25, the moving unit 60, and the conveying unit 70.

  By the way, in the first embodiment, the types of the sheet medium 100 that can be used by the writing apparatus 10 include the number of types according to the display method, manufacturer, and version. For example, a sheet medium 100 having a first display method related to a first manufacturer, an improved version of the sheet medium 100 having a first display method related to the first manufacturer, a sheet medium 100 having a second display method related to the first manufacturer, In the case where the sheet medium 100 of the first display method related to the second manufacturer and the sheet medium 100 of the second display method related to the second manufacturer exist, the types of the sheet medium 100 are five.

  In this case, the type information of the sheet medium 100 stored in the storage unit 81 includes information indicating the first display method related to the first manufacturer, information indicating an improved version of the first display method related to the first manufacturer, Information indicating the second display method regarding the first manufacturer, information indicating the first display method regarding the second manufacturer, and information indicating the second display method regarding the second manufacturer.

  On the other hand, the control information stored in the storage unit 81 is any one of ion irradiation time information, writing speed information and erasing speed information, which will be described later, and distance information between the sheet medium 100 and the control electrode. Is set. Of course, it is also possible to set all these pieces of information. In this case, only information corresponding to a mode designated in advance is applied.

  In addition, when a new type of sheet medium 100 is provided, the storage content of the storage unit 81 is updated based on information regarding the type of the sheet medium 100. That is, the type information of the sheet medium 100 and the control information are registered in the storage unit 81 in association with each other. Such information registration can be realized, for example, by operating a terminal device (not shown) that is a writing information source connected to the writing device 10.

  According to the control system of the writing apparatus 10 as described above, the determination unit 40 determines the type of the sheet medium 100 and notifies the control unit 80 of the determination result. The control unit 80 controls any one of the control power supply 25, the moving unit 60, and the transport unit 70 based on the determination result from the determination unit 40 and the stored contents of the storage unit 81.

  Next, a basic writing operation of the writing device 10 will be described with reference to FIG.

As shown in FIG. 2A, when the control power supply 25 switches the switch 25a to the contact 25b and the control electrode 23 is set to minus (−) and the control electrode 24 is set to plus (+), the control electrode Since the direction of the electric field between the control electrode 23 and the control electrode 23 is the direction from the control electrode 24 to the control electrode 23, the corona ions (in this case, negative corona ions) 50 pass through (pass through) the holes 27.

  Since a negative (−) bias voltage is applied to the control electrode 24 by the bias power source 26, the corona ions 50 that pass through the holes 27 are accelerated and reach the surface of the sheet medium 100.

  On the other hand, as shown in FIG. 2B, the control power supply 25 switches the switch 25a to the contact point 25c so that the control electrode 23 is positive (+) and the control electrode 24 is negative (−). Then, since the direction of the electric field between the control electrode 23 and the control electrode 23 is the direction from the control electrode 23 to the control electrode 24, the corona ions (in this case, negative corona ions) 50 are transmitted (passed) through the holes 27. Can not do it.

  Based on the principle as described above, an electrostatic image by corona ions corresponding to information is formed on the sheet medium 100. This electrostatic image and the reference electrode 30 are indicated by an arrow B in FIG. The electric field in the direction acts, and thus desired information can be written on the sheet medium 100. In such an operation, by conveying the sheet medium 100 in the direction of arrow A in FIG. 1 by the conveying means 70, it is possible to write desired information for one sheet medium.

  When erasing the information written on the sheet medium 100 in this way, a potential having the opposite polarity to that of the writing operation is applied to the corona wire 22, and the control power supply 25 switches the switch 25a to a predetermined contact. Corona ions generated from the corona wire 22 (in this case, positive corona ions) are allowed to pass through the hole 27 provided in the center of the control electrode 23 and the control electrode 24.

  As a result, corona ions having a polarity opposite to that at the time of writing (in this case, positive corona ions) adhere to the surface of the sheet medium 100, so that information is erased. In such an operation, by conveying the sheet medium 100 in the direction of arrow A in FIG. 1 by the conveying means 70, it is possible to erase desired information for one sheet medium.

  Next, information writing and erasing operations on different types of sheet media 100 by the writing device will be described with reference to FIGS. 4 and 5. FIG.

  FIG. 4 shows ion irradiation time (corresponding to time for passing between control electrodes) with respect to time per line for each sheet medium 100. Here, the time per line is a time determined by the writing speed and writing resolution of the sheet medium 100, and the ion irradiation time corresponds to the time for passing ions.

  In FIG. 4, (a) shows the ion irradiation time for an electrophoresis sheet (hereinafter referred to as “electrophoresis sheet”) using microcapsules manufactured by A company, and (b) shows electrophoresis performed by A company. The ion irradiation time for an improved version of the sheet (hereinafter referred to as “electrophoresis sheet (improved version)”) is shown, and (c) is a twist ball type sheet manufactured by B Company (hereinafter referred to as “twist ball type sheet”). The ion irradiation time with respect to is shown.

  FIG. 5 shows a state of an electrostatic image formed on each sheet medium 100 when ions are irradiated on each sheet medium 100 for the ion irradiation time shown in FIG.

5A shows an electrostatic image formed on the electrophoretic sheet, FIG. 5B shows an electrostatic image formed on the electrophoretic sheet (improved version), and FIG. 5C shows a twist ball. An electrostatic image formed on a mold sheet is shown.

  Here, in the first embodiment, the sheet medium 100 includes an electrophoretic sheet (manufactured by A company), an improved version of the electrophoretic sheet (manufactured by company A), and a twist ball type sheet (manufactured by company B). To do.

  Further, it is assumed that the storage unit 81 stores the type information of the sheet medium 100 and the ion irradiation time information in association with each other. That is, information indicating the electrophoresis method manufactured by Company A and ion irradiation time information Ta are associated with the storage unit 81, and information indicating an improved version of the electrophoresis method manufactured by Company A and ion irradiation time information. It is assumed that Tb is associated with each other, and information indicating the twist ball type manufactured by Company B and ion irradiation time information Tc are associated with each other and stored.

  Next, the operation of the writing apparatus 10 when writing on the electrophoretic sheet as the sheet medium 100 will be described.

  In the writing apparatus 10, the determination unit 40 determines the type of the inserted sheet medium 100 based on a writing instruction to the inserted sheet medium (electrophoretic sheet) 100, and notifies the control unit 80 of the determination result. To do.

  The determination of the type of sheet medium 100 may be set from a terminal (not shown) that is an information source of writing information, or an operation panel (not shown) provided in the writing apparatus 10 is operated. This may be a setting from a menu (not shown), or may be automatic determination using various sensors.

  The control unit 80 controls the control power supply 25 based on the determination result from the determination unit 40 and the stored contents of the storage unit 81.

  That is, since the notification content from the determination unit 40 is a determination result indicating that the type of the sheet medium 100 is “information indicating the electrophoresis method manufactured by Company A”, the control unit 80 determines the type information of the sheet medium 100. Control information corresponding to “information indicating electrophoresis method manufactured by Company A” is retrieved from the storage unit 81 and acquired. In this example, ion irradiation time information Ta corresponding to “information indicating electrophoresis method manufactured by Company A” as the type information of the sheet medium 100 is acquired.

  Based on the “ion irradiation time information Ta” as control information acquired from the storage unit 81, the control unit 80 sets the ion irradiation time “Ta” in the time per line for the control power supply 25. To instruct.

  Then, the control power supply 25 switches the switch 25a to the contact 25b (see FIG. 2A), and switches the switch 25a to the contact 25c when the ion irradiation time Ta elapses from the time of switching (see FIG. 2). 2 (b)) It is set so that only the ion irradiation time Ta out of the time per line is in a corona ion transmission state (see FIG. 4A).

  As a result, as shown in FIG. 5A, an electrostatic image 110 is formed on the surface of the electrophoretic sheet serving as the sheet medium 100, and ΔV1 is set between the potential of the reference electrode 30 and the surface potential of the sheet medium 100. A potential difference of. Therefore, desired information is written at a position (part) corresponding to the electrostatic image 110 in the sheet medium 100.

  Further, when writing to the electrophoretic sheet (improved version) and the twist ball type sheet, the control unit 80 determines the determination result from the determination unit 40 and the storage unit 81 as in the case of the electrophoretic sheet. The control power supply 25 is controlled based on the stored contents.

  That is, for the electrophoretic sheet (improved version), the control power supply 25 corresponds to “information indicating an improved version of the electrophoretic method manufactured by Company A” as the type information of the sheet medium 100 according to the control of the control unit 80. Based on the ion irradiation time information Tb, the corona ion transmission state (see FIG. 4B) is set only for the ion irradiation time Tb out of the time per line.

  As a result, as shown in FIG. 5B, an electrostatic image 120 is formed on the surface of the electrophoretic sheet (improved version) as the sheet medium 100, and the potential of the reference electrode 30 and the surface potential of the sheet medium 100 are Since a potential difference of ΔV <b> 2 is generated therebetween, desired information is written at a position (part) corresponding to the electrostatic image 120 in the sheet medium 100.

  On the other hand, regarding the twist ball type sheet, the control power supply 25 controls the ion irradiation time information Tc corresponding to “information indicating the twist ball type system manufactured by B company” as the type information of the sheet medium 100 according to the control of the control means 80. Based on the above, the corona ion transmission state (see FIG. 4C) is set for the ion irradiation time Tc out of the time per line.

  As a result, as shown in FIG. 5C, an electrostatic image 130 is formed on the surface of the twisting ball type sheet as the sheet medium 100, and ΔV3 between the potential of the reference electrode 30 and the surface potential of the sheet medium 100 is formed. Therefore, desired information is written at a position (part) corresponding to the electrostatic image 130 in the sheet medium 100.

  When erasing information written on each sheet medium 100, a potential having a polarity opposite to that of the writing operation is applied to the corona wire 22, and control is performed by the control unit 80 based on the determination result by the determination unit 40. The control power supply 25 is set so that corona ions (positive corona ions in this example) can be transmitted (passed) for an ion irradiation time corresponding to the type of each sheet medium 100.

  As a result, corona ions having a polarity opposite to that at the time of writing (plus in this example) adhere to the surface of the sheet medium 100, so that the information written on the sheet medium 100 is erased. Of course, in such an information erasing operation, the sheet medium 100 is conveyed in the direction of the arrow A in FIG. 1 by the conveying means 70, so that all information for one sheet medium can be erased. .

  In the first embodiment, the line-type head 20 of the writing apparatus 10 is a non-contact type in which writing and erasing are performed in a non-contact state with the sheet medium 100. However, the present invention is not limited to this. Instead, writing and erasing by a contact method as shown in FIG. 6 may be performed.

  The writing device 10 shown in FIG. 6 has a configuration in which a determination unit 40 is added to the configuration of the conventional device shown in FIG. In FIG. 6, the sheet medium 100 contacts the writing drums 6 and 7 and the erasing drums 2 and 4 and is conveyed in the direction of arrow A in FIG.

In such a writing apparatus 10, the line-type head 20 is configured so that each pixel electrode of the circuit board 7 on the writing drum 6 or each pixel electrode of the circuit board 3 on the erasing drum 2 is based on the determination result by the determination means 40. The application time for applying the voltage to is controlled. Thus, desired information is written or erased. However, from the viewpoint of the life of the sheet medium 100, the non-contact method is preferable to the contact method.

  In the first embodiment, as the line-type head 20 for writing information by a non-contact method, a method in which corona ions are uniformly generated and ions are selected using the control electrodes 23 and 24 is used. Although shown, this invention is not limited to this, It is good also as a system which selectively generate | occur | produces ion by heating the metal electrode which applied the high voltage.

  Further, in the first embodiment, when erasing the information written on the sheet medium 100, scanning is performed by applying a potential of the opposite polarity to that of the writing operation to the corona wire 22 so that the corona ions can pass. Although the present invention is not limited to this, the present invention includes a line-type head for writing and a line-type head for erasing, and these line-type heads are used for erasing or A method may be used in which writing is performed by a series of operations. In this case, the line type head for erasing may be any system of a simple electrode or a device that generates corona ions.

  Furthermore, in the first embodiment, as the sheet medium 100, an electrophoretic sheet using microcapsules, a twist ball type sheet reported by Gyricon from Xerox Corporation, and a liquid crystal having memory properties, It is possible to use a sheet medium 100 having various electric field drive type memory properties.

  By the way, solutions that reduce the environmental burden by reducing printing on paper will be essential for humanity in the future. Therefore, the sheet medium 100 can be reused by writing or erasing information on the sheet medium 100 whose optical characteristics are reversibly changed by the action of an electric field by the writing device of the first embodiment. From the viewpoint of reducing the load, it can be said that the writing device of the first embodiment is an extremely useful device that can reduce the environmental load.

  As described above, according to the first embodiment, the determination unit 40 for determining the type of the sheet medium 100 is provided. Therefore, even when the sheet medium 100 of a different type is used, the optimum writing is performed. Quality can be ensured. For this reason, the user possesses the writing device according to the present invention, so that even if the inexpensive and high-quality sheet medium 100 is improved one after another, the writing operation suitable for the sheet medium 100 can be supported. Therefore, the convenience for the user can be greatly improved.

  For example, since the optimum writing quality can be ensured even if different types of sheet media 100 are used, an electrophoretic sheet using microcapsules as the sheet medium 100 is reported by Xerox Corporation with the name Gylikon. Since the sheet medium 100 having various electric field drive type memory properties such as a twist ball type sheet and a liquid crystal having a memory property can be used, the convenience for the user can be greatly improved.

  Further, according to the first embodiment, since writing and erasing are performed in a non-contact state between the line-type head 20 and various sheet media 100, there is no damage to the sheet media 100, and the life of the sheet media 100 is extended. There is also an advantage of being able to do it.

Furthermore, according to the first embodiment, the sheet medium 100 can be reused by writing or erasing information on the sheet medium 100 whose optical characteristics reversibly change due to the action of an electric field. There is an advantage that a very useful writing device capable of reducing the load can be provided.

  Furthermore, according to the first embodiment, providing a writing device that can handle various sheet media 100 is that the writing device (system) serves as a platform, and the manufacturer of the sheet media 100 has improved one after another. It becomes possible to work on the development of the sheet medium 100 that has been made, and as a result, the price of the sheet medium 100 is reduced and the spread of the writing apparatus is accelerated. As a result, it is possible to significantly reduce the environmental load on a Japanese or global scale.

  On the other hand, in a device that supports only a specific type of sheet medium 100, such as the above-described conventional device, the spread of the device is not accelerated, and as a result, it cannot be expected to reduce the environmental load. Become.

(Embodiment 2)
FIG. 7 is a diagram for explaining the pixel irradiation time in the writing apparatus according to the second embodiment of the present invention, and FIG. 8 is formed on various sheet media when the writing speed of writing on the various sheet media in the second embodiment is changed. It is a figure which shows the mode of the electrostatic latent image.

  The writing device of the second embodiment has the same basic configuration and function as the writing device of the first embodiment (see FIGS. 1 to 3), but the conditions for writing or erasing the sheet medium 100 Is different. Next, the differences will be described.

  Also in the second embodiment, as the sheet medium 100, three types of electrophoresis sheet, electrophoresis sheet (improved version), and twist ball type sheet are used as in the case of the first embodiment.

  Further, it is assumed that the storage unit 81 stores the type information and speed information of the sheet medium 100 in association with each other. That is, in the storage unit 81, information indicating the electrophoresis method manufactured by Company A and the velocity information v1 are associated with each other, and information indicating an improved version of the electrophoresis method manufactured by Company A and the velocity information v2 are associated with each other. Furthermore, it is assumed that information indicating the twist ball type manufactured by Company B and speed information v3 are associated with each other and stored. Here, the speed information is writing speed information and erasing speed information.

  Next, the operation of the writing apparatus 10 when writing on the electrophoretic sheet as the sheet medium 100 will be described.

  In the writing apparatus 10, the determination unit 40 determines the type of the inserted sheet medium 100 based on a writing instruction for the inserted sheet medium (electrophoretic sheet) 100, and notifies the control unit 80 of the determination result. To do.

  The control unit 80 controls the transport unit 70 based on the determination result from the determination unit 40 and the stored contents of the storage unit 81 (see FIG. 3).

  That is, since the notification content from the determination unit 40 is a determination result indicating that the type of the sheet medium 100 is “information indicating the electrophoresis method manufactured by Company A”, the control unit 80 determines the type information of the sheet medium 100. Control information corresponding to “information indicating electrophoresis method manufactured by Company A” is retrieved from the storage unit 81 and acquired. In this example, speed information v1 corresponding to “information indicating electrophoresis method manufactured by Company A” as the type information of the sheet medium 100 is acquired.

Based on the “speed information v1” as control information acquired from the storage unit 81, the control unit 80 instructs the conveyance unit 70 to set the writing speed of the sheet medium 100 to “v1”.

  Then, the conveying unit 70 conveys the sheet medium 100 at the speed v1 in the direction of the arrow A in FIG. 1 according to the control of the control unit 80, and at the same time, the line type head 20 is generated for the pixel irradiation time Td shown in FIG. The negative corona ions are transmitted (passed) through the holes 27 provided in the control electrodes 23 and 24 (transmitted state). That is, the control power supply 25 is set so that the switch 25a is connected to the contact 25b for the pixel irradiation time Td.

  As a result, as shown in FIG. 8A, an electrostatic image 110 is formed on the surface of the electrophoretic sheet serving as the sheet medium 100, and ΔV1 is set between the potential of the reference electrode 30 and the surface potential of the sheet medium 100. A potential difference of. Therefore, desired information is written at a position (part) corresponding to the electrostatic image 110 in the sheet medium 100.

  Further, when writing to the electrophoretic sheet (improved version) and the twist ball type sheet, the control unit 80 determines the determination result from the determination unit 40 and the storage unit 81 as in the case of the electrophoretic sheet. The conveying means 70 is controlled based on the stored contents.

  That is, in the case of an electrophoretic sheet (improved version), the conveying means 70 corresponds to “information indicating an improved version of the electrophoretic method manufactured by Company A” as the type information of the sheet medium 100 under the control of the control means 80. The electrophoretic sheet (improved version) is conveyed at a writing speed (conveyance speed) based on the speed information v2.

  In the case of a twist ball type sheet, according to the control of the control unit 80, the conveying unit 70 uses the speed information v3 corresponding to “information indicating the twist ball type system manufactured by B company” as the type information of the sheet medium 100. The twisted ball type sheet is conveyed at a writing speed (conveying speed) based on it.

  In this way, with respect to the sheet medium 100 transported at the writing speed corresponding to the type of each sheet medium 100, the line type head 20 generates the generated negative corona ions for the pixel irradiation time Td shown in FIG. , 24 is set to a state of transmitting (passing) through the holes 27 (transmitting state).

  As a result, with respect to the electrophoretic sheet (improved version), an electrostatic image 120 is formed on the surface of the electrophoretic sheet (improved version) as the sheet medium 100 as shown in FIG. Since a potential difference of ΔV2 is generated between the potential and the surface potential of the sheet medium 100, desired information is written at a position (part) corresponding to the electrostatic image 120 on the sheet medium 100.

  On the other hand, with respect to the twist ball type sheet, as shown in FIG. 8C, an electrostatic image 130 is formed on the surface of the twist ball type sheet as the sheet medium 100, and the potential of the reference electrode 30 and the surface of the sheet medium 100 Since a potential difference of ΔV3 occurs with respect to the potential, desired information is written at a position (part) corresponding to the electrostatic image 130 in the sheet medium 100.

  As described above, even if the pixel irradiation time is constant as Td, the writing speed for each sheet medium 100 is different, so the number of writing lines in the sheet medium 100 is different.

That is, in the case of an electrophoretic sheet using a microcapsule manufactured by company A, information corresponding to one line (see FIG. 8A) corresponds to two lines in the case of an improved version of the electrophoretic sheet manufactured by company A. In the case of the twist ball type sheet manufactured by B company, information (see FIG. 8C) is written in the information (see FIG. 8B).

  Next, when erasing the information written on each sheet medium 100, a potential having a polarity opposite to that of the writing operation is applied to the corona wire 22, and the control means is based on the determination result by the determination means 40. A conveying unit 70 controlled by 80 conveys the sheet medium 100 at a designated erasing speed (any one of v1, v2, and v3).

  In the line-type head 20, the control power supply 25 is set to a state in which corona ions (positive corona ions in this example) can be transmitted (passed) for the pixel irradiation time Td. As a result, all information for one sheet can be erased.

  As described above, according to the second embodiment, it is possible to expect the same effect as that of the first embodiment described above.

  Further, according to the second embodiment, when the sheet medium 100 is improved so as to react with a small electric field strength, the writing speed can be increased as compared with the case where the sheet medium 100 before the improvement is used. Therefore, for the user, the writing time per sheet medium is shortened, and the convenience is further improved.

(Embodiment 3)
FIG. 9 is a diagram showing a state of electrostatic images formed on various sheet media when the distance between the control electrode in the writing apparatus and the sheet medium 100 in the third embodiment of the present invention is changed.

  The writing device of the third embodiment has the same basic configuration and function as the writing device of the first embodiment (see FIGS. 1 to 3), but the conditions for writing or erasing the sheet medium 100 Is different. Next, the differences will be described.

  Also in the third embodiment, as the sheet medium 100, three types of electrophoresis sheet, electrophoresis sheet (improved version), and twist ball type sheet are used as in the case of the first embodiment.

  Further, it is assumed that the storage unit 81 stores the type information and distance information of the sheet medium 100 in association with each other. That is, in the storage unit 81, information indicating the electrophoresis method manufactured by company A and distance information L1 are associated with each other, and information indicating an improved version of the electrophoresis method manufactured by company A and distance information L2 are associated with each other. Further, it is assumed that information indicating the twist ball type manufactured by Company B and distance information L3 are stored in association with each other.

  Here, the distance information is information indicating a distance between two surfaces of the reference electrode 30 and the control electrode 24 facing each other.

  Next, the operation of the writing apparatus 10 when writing on the electrophoretic sheet as the sheet medium 100 will be described.

  In the writing apparatus 10, the determination unit 40 determines the type of the inserted sheet medium 100 based on a writing instruction to the inserted sheet medium (electrophoretic sheet) 100, and notifies the control unit 80 of the determination result. To do.

  The control unit 80 controls the moving unit 60 based on the determination result from the determination unit 40 and the stored contents of the storage unit 81 (see FIG. 3).

  That is, since the notification content from the determination unit 40 is a determination result indicating that the type of the sheet medium 100 is “information indicating the electrophoresis method manufactured by Company A”, the control unit 80 determines the type information of the sheet medium 100. Control information corresponding to “information indicating electrophoresis method manufactured by Company A” is retrieved from the storage unit 81 and acquired. In this example, distance information L1 corresponding to “information indicating the electrophoresis method manufactured by Company A” as the type information of the sheet medium 100 is acquired.

  Based on the “distance information L1” as the control information acquired from the storage unit 81, the control unit 80 determines the distance between the two opposing surfaces of the reference electrode 30 and the control electrode 24 with respect to the moving unit 60. Is set to “L1”.

  Then, as shown in FIG. 9A, the moving unit 60 causes the distance between the two opposing surfaces of the reference electrode 30 and the control electrode 24 to be “L1” according to the control of the control unit 80. In addition, the control electrode 23 and the control electrode 24 are moved in the vertical (vertical) direction.

  At the same time, in the line-type head 20, the generated negative corona ions are transmitted through the holes 27 provided in the control electrodes 23 and 24 for the pixel irradiation time Td as in the case of the second embodiment described above. Set to the (passing) state (transmission state).

  As a result, as in the first embodiment or the second embodiment, an electrostatic image is formed on the surface of the electrophoretic sheet as the sheet medium 100, and the potential of the reference electrode 30 and the surface potential of the sheet medium 100 are A predetermined potential difference occurs between the two. Therefore, desired information is written at a position (part) corresponding to the electrostatic image on the sheet medium 100.

  Further, when writing to the electrophoretic sheet (improved version) and the twist ball type sheet, the control means 80 uses the determination result from the determination means 40 and the storage unit 81 as in the case of the electrophoretic sheet. The moving means 60 is controlled based on the stored contents.

  That is, in the case of an electrophoretic sheet (improved version), the moving unit 60 corresponds to “information indicating an improved version of the electrophoretic method manufactured by Company A” as the type information of the sheet medium 100 according to the control of the control unit 80. Based on the distance information L2, the control electrode 23 and the control electrode 24 are set so that the distance between the surface of the reference electrode 30 and the surface of the control electrode 24 on the reference electrode 30 side becomes “L2” (see FIG. 9B). Move up and down (vertical).

  On the other hand, in the case of a twist ball type sheet, the moving unit 60 is based on the distance information L3 corresponding to “information indicating the twist ball type system manufactured by B company” as the type information of the sheet medium 100 according to the control of the control unit 80. Thus, the control electrode 23 and the control electrode 24 are moved up and down (vertically) so that the distance between the surface of the reference electrode 30 and the surface of the control electrode 24 on the reference electrode 30 side becomes “L2” (see FIG. 9C). Move in the direction.

  Simultaneously with the movement of the control electrodes 23 and 24, the line-type head 20 generates negative corona ions generated in the control electrodes 23 and 24 for the pixel irradiation time Td as in the case of the second embodiment. The state is set so as to transmit (pass) through the hole 27 provided therein (transmission state).

  As a result, as in the case of the first embodiment or the second embodiment, an electrostatic image is formed on the surface of the electrophoretic sheet (improved version) as the sheet medium 100 or the surface of the twist ball type sheet, and the reference electrode A predetermined potential difference is generated between the potential of 30 and the surface potential of the sheet medium 100. Therefore, desired information is written at a position (part) corresponding to the electrostatic image on the sheet medium 100.

  As described above, according to the third embodiment, it is possible to expect the same effect as that of the first embodiment described above.

  Further, according to the third embodiment, when the sheet medium 100 is thinly improved so as to react with a small electric field strength, the sheet medium 100 is not only lighter and the handling property is improved, but also by the bias power source 26. Since the acceleration of the corona ions becomes stronger, even if the ion irradiation time is the same, the amount of ions passing through the hole 27 provided in the center of the control electrodes 23 and 24 (ion passing amount) increases. For this reason, since the writing speed can be increased as compared with the case where the sheet medium 100 before improvement is used like the speeds v4, v5, and v6 shown in FIG. The writing time per sheet is shortened, and the convenience is further improved.

(Embodiment 4)
FIG. 10 is a perspective view showing the configuration of the writing apparatus according to Embodiment 4 of the present invention, and FIG. 11 is a diagram showing a control system of the writing apparatus shown in FIG.

  The writing device 10 according to the fourth embodiment has a configuration in which a search unit 200 is added to the configuration of the writing device 10 according to the first embodiment shown in FIG. Note that, in FIG. 10, the same reference numerals are given to portions that perform the same functions as the components shown in FIG. 1.

  The detection unit 200 detects the optical characteristics of the sheet medium 100 inserted in the writing apparatus 10 and notifies the determination unit 40 of the detection result. The detecting unit 200 detects the reflectance of the sheet medium 100, for example.

  In the fourth embodiment, information indicating reflectivity, type information of the sheet medium 100, and control information are stored in the storage unit 81 in the control unit 80 in association with each other. Therefore, if the reflectance of the sheet medium 100 can be known, the type of the sheet medium 100 can be known.

  In the writing apparatus 10 configured as described above, when a predetermined type of sheet medium 100 is inserted into the writing apparatus 10, the detection unit 200 detects (measures) the reflectance of the sheet medium 100, and FIG. As shown, this detected result is sent to the determination means 40.

  The determination unit 40 notifies the control unit 80 of the detection result from the detection unit 200 as the determination result of determining the type of the sheet medium 100. The control unit 80 acquires at least control information corresponding to the information indicating the reflectance from the storage unit 81 based on the determination result (information indicating the reflectance) from the determination unit 40, and the acquired control information is included in the acquired control information. Based on this, any one of the control power supply 25, the moving means 60, and the conveying means 70 is controlled.

  Since subsequent operations are the same as those in the first to third embodiments, the description thereof is omitted here.

  In the fourth embodiment, even when the characteristics of the sheet medium 100 are changed due to an external environment such as temperature and humidity, writing is performed on a predetermined partial area of the sheet medium 100 and the writing is performed. The detection means 200 detects (measures) the reflectance of the result, and further, by applying feedback based on the detection result, an electrostatic image that generates an optimal electric field can be generated.

As described above, according to the fourth embodiment, the determination unit 40 that determines the type of the sheet medium 100 and the detection unit 200 that detects the optical characteristics of the sheet medium 100 are provided. Even when the sheet medium 100 is used, the optimum writing quality can be automatically ensured, and further the writing quality can be ensured in any environment, so that the convenience for the user is greatly improved.

(Embodiment 5)
12 is a perspective view showing a configuration of a writing system according to Embodiment 5 of the present invention, FIG. 13 is a diagram showing a configuration of a sheet medium in the writing system shown in FIG. 12, and FIG. 14 is a diagram of the writing system shown in FIG. It is a figure which shows a control system.

  In FIG. 12, the writing system (processing system) includes a writing device (processing device) 10 and a sheet medium 300. Note that, in FIG. 12, the same reference numerals are given to portions that perform the same functions as the components shown in FIG. 1.

  The writing device 10 shown in FIG. 12 has a configuration in which a wireless tag communication unit 400 is added to the configuration of the writing device 10 of the first embodiment shown in FIG.

  As illustrated in FIG. 13, the sheet medium 300 includes a wireless tag 310, and the wireless tag (first communication unit) 310 transmits and receives signals to and from a memory 311 that stores information unique to the sheet medium. A transmission / reception circuit 312, a control circuit 313 for accessing the memory 311, and an antenna unit 314 for transmitting / receiving a signal to / from the RFID tag communication unit (second communication unit) 400 provided in the writing device 10; Yes.

  Next, the operation of the writing system configured as described above will be described with reference to FIG. 13 and FIG.

  Here, the sheet medium-specific information stored in the memory 311 is, for example, sheet medium type information stored in the storage unit 81 in the control unit 80 shown in FIG.

  When a predetermined type of sheet medium 300 is inserted into the writing device 10, the wireless tag communication unit 400 provided in the writing device 10 transmits an electromagnetic wave having a predetermined frequency.

  The electromagnetic wave from the wireless tag communication unit 400 is received by the antenna unit 314 of the wireless tag 310 provided in the sheet medium 300 (see FIG. 14).

  In the wireless tag 310, when the transmission / reception circuit 312 receives the electromagnetic wave from the wireless tag communication unit 400 via the antenna unit 314 as shown in FIG. 13, it notifies the control circuit 313 that the sheet medium has been inserted.

  Then, the control circuit 313 reads information specific to the sheet medium stored in the memory 311 and requests the transmission / reception circuit 312 to transmit the read information to the writing device 10.

  Information unique to the sheet medium read by the control circuit 313 in this way is transmitted to the RFID tag communication means 400 of the writing apparatus 10 via the transmission / reception circuit 312 and the antenna unit 314.

  In the writing apparatus 10, the wireless tag communication unit 400 sends information specific to the sheet medium from the wireless tag 310 of the sheet medium 300 to the determination unit 40. The determination unit 40 notifies the control unit 80 of the received sheet medium specific information as a result of determining the type of the sheet medium.

  As shown in FIG. 14, the control unit 80 is configured to control the control power supply 25, the moving unit 60, and the conveying unit 70 based on the determination result from the determination unit 40, that is, the information specific to the sheet medium, and the storage contents of the storage unit 81. Either one is controlled.

  Since subsequent operations are the same as those in the first to third embodiments, the description thereof is omitted here.

  The information specific to the sheet medium may be control information stored in the storage unit 81 in the control means 80 shown in FIG. In this case, the control unit 80 does not need to include the storage unit 81, and can control any one of the control power supply 25, the moving unit 60, and the transport unit 70 based on the determination result from the determination unit 40, that is, the control information. good.

  At this time, as control information, when two or more pieces of information are included among ion irradiation time information, speed information, and distance information, control information corresponding to a mode designated in advance is adopted.

  As described above, in the writing device 10, the determination unit 40 can acquire the information specific to the sheet medium stored in the memory 311 of the wireless tag 310 corresponding to various sheet media through the wireless tag communication unit 400. Therefore, the line-type head 20 can generate an optimum electrostatic image based on the information specific to the sheet medium, and thus can ensure writing quality.

  In the fifth embodiment, the wireless tag 310 is operated based on an induced voltage generated in the antenna unit 314 in an electromagnetic field (AC magnetic field) having a predetermined frequency radiated from the wireless tag communication unit 400. Preferably it is.

  The reason for this is that since a power source such as a battery for the wireless tag 310 is not required, the life of the wireless tag 310 is not substantially limited, and the wireless tag 310 itself can be reduced in size and weight. This is because the battery replacement work is unnecessary and maintenance-free can be realized. Furthermore, since the wireless tag itself is provided at a low cost, the sheet medium can be realized at a lower cost because a power source such as a battery is not required.

  As described above, according to the fifth embodiment, the wireless tag communication unit 400 provided in the writing device 10 is unique to the sheet medium by wireless communication with the wireless tag 310 as tag information provided in the sheet medium 300. Since the writing apparatus 10 performs writing or erasing based on the acquired information specific to the sheet medium, the optimum writing quality is automatically ensured even if different types of sheet media are used. This can greatly improve user convenience.

  The present invention is a processing apparatus and processing system that realizes writing or erasing on a sheet medium that can be repeatedly used, unlike printing on paper, and further is a processing apparatus and processing system that does not generate consumables. It is useful as an image forming apparatus such as a printer that can contribute to reducing the load.

The perspective view which shows the structure of the writing apparatus in Embodiment 1 of this invention. The figure which shows the line type head of the writing apparatus shown in FIG. The figure which shows the control system of the writing apparatus shown in FIG. The figure explaining the ion irradiation time with respect to the time per line with respect to the various sheet media in Embodiment 1. FIG. The figure which shows the mode of the electrostatic image formed in each said sheet | seat medium when ion is irradiated to each sheet | seat medium only for the ion irradiation time shown in FIG. FIG. 10 illustrates an application example of the writing device in the first embodiment; The figure explaining the pixel irradiation time in the writing apparatus in Embodiment 2 of this invention. FIG. 10 is a diagram illustrating a state of electrostatic latent images formed on various sheet media when the writing speed of writing on various sheet media in the second embodiment is changed. The figure which shows the mode of the electrostatic image formed in various sheet media at the time of changing the distance of the control electrode in the writing apparatus in Embodiment 3 of this invention, and a sheet medium. FIG. 10 is a perspective view showing the configuration of the writing apparatus according to Embodiment 4 of the present invention. The figure which shows the control system of the writing apparatus shown in FIG. The perspective view which shows the structure of the writing system in Embodiment 5 of this invention. The figure which shows the structure of the sheet medium in the writing system shown in FIG. The figure which shows the control system of the writing system shown in FIG. Diagram showing the configuration of a conventional device

Explanation of symbols

10 Writing device (processing device)
20 line type head (electric field generating means)
DESCRIPTION OF SYMBOLS 21 Ion source 22 Corona wire 23, 24 Control electrode 25 Control power supply 26 Bias power supply 30 Reference electrode 40 Determination means 50 Corona ion 60 Movement means 70 Conveyance means 80 Control means 81 Storage part 100,300 Sheet medium 200 Detection means 310 Wireless tag ( First communication means)
311 Memory 312 Transmission / reception circuit 313 Control circuit 314 Antenna unit 400 RFID tag communication means (second communication means)

Claims (10)

A processing apparatus having an electric field generating means for generating a predetermined electric field for writing visible information on a sheet medium whose optical characteristics are reversibly changed by the action of an electric field,
Determining means for determining the type of the sheet medium;
The electric field generating means includes
A processing apparatus for generating the predetermined electric field corresponding to the type of sheet medium determined by the determining means. A processing apparatus having an electric field generating means for generating a predetermined electric field for erasing visible information written on a sheet medium whose optical characteristics reversibly change by the action of an electric field,
Determining means for determining the type of the sheet medium;
The electric field generating means includes
A processing apparatus for generating the predetermined electric field corresponding to the type of sheet medium determined by the determining means. The electric field generating means includes
3. The processing apparatus according to claim 1, wherein an electric field based on an electrostatic image is generated by controlling irradiation of corona ions. The electric field generating means includes
The predetermined distance corresponding to the type of the sheet medium based on the determination result by the determination means by controlling the distance between the sheet medium and the irradiation reference position to irradiate corona ions based on the determination result by the determination means. The processing apparatus according to claim 1, wherein the electric field is generated. The electric field generating means includes
The predetermined electric field corresponding to the type of the sheet medium based on the determination result by the determination means is generated by controlling the electric field application time for the sheet medium based on the determination result by the determination means. The processing apparatus according to claim 1 or 2. The electric field generating means includes
The predetermined electric field corresponding to the type of the sheet medium based on the result of the determination by the determination means is generated by controlling the writing speed of visible information on the sheet medium based on the determination result by the determination means. The processing apparatus according to claim 1. The electric field generating means includes
The predetermined electric field corresponding to the type of the sheet medium based on the determination result by the determination means is generated by controlling the erasing speed of the visible information on the sheet medium based on the determination result by the determination means. The processing apparatus according to claim 2. Comprising detection means for detecting optical characteristics of the sheet medium;
The determination means includes
The processing apparatus according to claim 1, wherein the type of the sheet medium is determined based on a result of detection by the detection unit. A sheet medium whose optical properties reversibly change by the action of an electric field;
The processing apparatus according to any one of claims 1 to 8,
A processing system comprising: A processing system comprising a sheet medium whose optical characteristics reversibly change due to the action of an electric field, and the processing apparatus according to any one of claims 1 to 7,
The sheet medium is
The first communication means for storing the unique information of the own sheet medium and performing wireless communication of the unique information with the outside,
The processor is
Comprising second communication means for performing wireless communication of the unique information with the first communication means;
The determination means includes
A processing system for determining a type of the sheet medium based on unique information acquired by wireless communication by the second communication means.

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