This application is based upon and claims the benefit of priority from Japanese Patent Application No. 2009-212274, filed on Sep. 14, 2009, the entire contents of which is incorporated herein by reference.
Embodiments described herein relate generally to a printer and a method for recording and/or erasing a visible image with respect to a rewritable-type recording medium including a wireless communicable IC inlet.
Recently, technologies for wirelessly short-range communicating among IC inlets of articles have rapidly been distributed. Some types of printers use a print paper (recording medium) having a recording surface where a visible image is recordable, as an article. The print paper is mounted with an IC inlet, and the printers record the IC inlet along with printing the recording surface.
In some rewritable-type recording medium, visible images may be repeatedly recorded and erased in response to the application of heat energy. Such a recording medium has characteristics that a visible image is recorded by heating, the visible image is fixed by rapid cooling after heating, and the once-visualized image is erased by slow cooling after heating. If a recording medium is re-heated, a fixed visible image starts to be erased when the recording medium reaches a lower temperature than when the visible image is formed, and it is possible to repeatedly record and erase the visible image many times.
Additionally, some rewritable-type recording mediums are embedded with an IC inlet.
A printer prints on a recording medium having a recording surface whose visible image is recordable and erasable by the assignment of heat energy, and the recording medium has a wireless communicable IC inlet therein. The printer includes a guide conveying unit configured to convey the recording medium along a guide path, an image recording/erasing unit configured to record and erase a visible image by assigning heat energy of a thermal print head to the recording surface of the recording medium, and a control unit configured to control the image recording/erasing unit so as to assign a first temperature to a region where the IC inlet is not arranged, and so as to assign a second temperature higher than the first temperature to a region where the IC inlet is arranged when a visible image is erased.
Embodiments will now be described in detail with reference to the drawings.
Embodiments provide printer 201 using rewritable paper P (see
Printer 201 includes paper feed port 205 on the rear. Paper feed port 205 is connected to feed port 105 installed at the end of paper feed path 104 built in paper feeder 101. Paper feed port 205 is connected to paper discharging port 203 formed on front panel 204 via guide path 206 for guiding rewritable paper P. Along guide path 206, two pairs of conveying rollers 207 (guide conveying unit) are arranged to convey rewritable paper P.
Printer 201 includes a built-in image recording/erasing unit 208 for recording and erasing a visible image by assigning heat energy to rewritable paper P. Image recording/erasing unit 208 is disposed around paper discharging port 203 at the end of guide path 206. Image recording/erasing unit 208 includes, among others, platen 209 (guide conveying unit) installed in guide path 206 and linear type thermal print head 210 in contact with platen 209 via guide path 206. Thermal print head 210 includes a plurality of heating elements 210a arranged in a line (see
Printer 201 includes a built-in antenna holding body 212 for holding antenna 211 of wireless communication unit 251. Antenna holding body 212 is arranged between pairs of conveying rollers 207 and image recording/erasing unit 208, which are located in the downstream of guide path 206. Wireless communication unit 251 uses antenna 211 to perform short-range wireless communication with IC inlet 52 in rewritable paper P. Antenna holding body 212 for holding antenna 211 is disposed below guide path 206, When IC inlet 52 is positioned opposite to antenna 211, wireless communication unit 251 wirelessly communicates with IC inlet 52.
Printer 201 further includes paper registration sensors 213 disposed ahead of antenna holding body 212 in the guide path 206. Paper registration sensors 213 detect rewritable paper P being conveyed by pairs of conveying rollers 207. After paper registration sensors 213 detects, wireless communication unit 251 connected to antenna 211 performs short-range wireless communication and image recording/erasing unit 208 records or erases a visible image in synchronization with the wireless communication based on the detection of paper registration sensors 213. For example, paper registration sensors 213 use transmission photo sensors.
More specifically, as shown in
As described above, rewritable paper P whose visible image is recordable and erasable has built-in IC inlet 52 (see
Via bus line BL, CPU 253 is connected to head control circuit 257 for controlling thermal print head 210, motor controller 258 for controlling to drive pairs of conveying rollers 207 of a conveying system and a motor (not shown) for rotating platen 209 as a drive source, operation display unit 202, and sensor input circuit 259 for receiving a signal from paper registration sensor 213. Further, CPU 253 is connected to I/O 260 for connecting paper feeder 101 and communication interface 261 via bus line BL. Communication interface 261 may be connected to an external device (not shown), and allows printer 201 to communicate with the external device by supporting a communication protocol.
When printer 201 receives an image formation command from the external device via communication interface 261, printer 201 outputs an activation command to paper feeder 101 connected to I/O 260. In response to the activation command, paper feeder 101 picks up the top piece from pieces of rewritable papers P loaded on lifter 102 by pickup unit 106. Pickup unit 106 separates the top piece from other pieces of rewritable papers P located therebelow, and feeds the top piece to paper feed port 205 of printer 201 via feed port 105.
Control unit 252 of printer 201 inputs a drive signal into motor controller 258 in time. Thereby, pairs of conveying roller 207 and platen 209 of image recording/erasing unit 208 are driven to rotate. At this point, printer 201 receives rewritable paper P delivered from paper feeder 101 and conveys rewritable paper P using pairs of conveying rollers 207. Control unit 252 acquires the timing when paper registration sensor 213 detects rewritable paper P, and synchronously controls image recording/erasing unit 208 to record a visible image to recording surface 51 of rewritable paper P based on print data received along with the image formation command from the external device. Alternatively, if an image erasure command is received from the external device, image recording/erasing unit 208 is controlled to erase a visible image recorded on recording surface 51 of rewritable paper P. Thereafter, printer 201 discharges rewritable paper P whose visible image has been recorded or erased from paper discharging port 203.
In the course of recording a viable image on rewritable paper P or erasing a viable image from rewritable paper P, control unit 252 of printer 201 controls wireless communication unit 251 to perform short-range wireless communication with IC inlet 52 on which rewritable paper P is mounted. Control unit 252 uses wireless communication unit 251 to write IC chip 52a with record information for IC inlet 52, which is received along with the image formation command or the image erasure command from the external device. Otherwise, control unit 252 uses wireless communication unit 251 to read or erase information stored in IC chip 52a.
In this respect, for the sake of convenience, it is assumed that the heat energy of heating elements 210a driven with the strobe pulse illustrated in
Here, for the sake of convenience, it is assumed that the heat energy of heating elements 210a driven with the strobe pulses illustrated in
In order to vary the heat energy to be assigned to recording surface 51 of rewritable paper P, the adjustment of strobe pulse width illustrated in
When a visible image is erased, heating elements 210a of thermal print head 210 are respectively driven so that heat energy becomes E2 for the region where IC inlet 52 is not installed and heat energy becomes E3 for the region where IC inlet 52 is installed (see
Accordingly, control unit 252 of printer 201 drives heating elements 210a of thermal print head 210 as shown in Table 1.
If control unit 252 recognizes the distance data in association with regions L1 to L5 in a sub scan direction and the range date R of IC inlet 52 in a main scan direction defined in definition file 231, control unit 252 may recognize when the heating elements 210a are driven in a sub scan direction with heat energy E3 and which of the heating elements 210a are driven in a main scan direction with heat energy E3. In accordance with the recognition, control unit 252 sets the heat energy of heating elements 210a to E2 for the region where IC inlet 52 is not installed, and sets the heat energy of heating elements 210a to E3 for the region where IC inlet 52 is installed.
When rewritable paper P is positioned with respect to region L1 in a sub scan direction (Y of ACT 103), CPU 253 sets flag F to 1 (ACT 109). Heating elements 210a of thermal print head 210 are driven to generate the heat energy of E2 according to definition file 231 (ACT 110). Thereby, for region L1 in a sub scan direction, a visible image recorded on recording surface 51 of rewritable paper P is erased.
When rewritable paper P is positioned with respect to region L2 in a sub scan direction (Y of ACT 104), CPU 253 drives heating elements 210a of thermal print head 210 to generate the heat energy of E3 for two regions R2 in a main scan direction and to generate the heat energy of £2 for other portions according to definition file 231 (ACT 111). Thereby, a visible image recorded on recording surface 51 of rewritable paper P is erased for region L2 in a sub scan direction. At this point, IC inlet 52 absorbs the heat energy of heating elements 210a, but the heat energy for the region is supplemented with the heat energy of E3, so that a visible image is well erased without leaving any residual.
When rewritable paper P is positioned with respect to region L3 in a sub scan direction (Y of ACT 105), CPU 253 drives heating elements 210a of thermal print head 210 to generate the heat energy of E3 for region R1 in a main scan direction and to generate the heat energy of E2 for other portions according to definition file 231 (ACT 112). Thereby, a visible image recorded on recording surface 51 of rewritable paper P is erased for region L3 in a sub scan direction. At this point, IC inlet 52 absorbs the heat energy of heating elements 210a, but the heat energy for the region is supplemented with the heat energy of E3, so that a visible image is well erased without leaving any residual.
When rewritable paper P is positioned with respect to region L4 in a sub scan direction (Y of ACT 106), CPU 253 drives the heating elements 210a of thermal print head 210 to generate the heat energy of E3 for two regions R2 in a main scan direction and to generate the heat energy of E2 for other portions according to definition file 231 (ACT 113). Thereby, a visible image recorded on recording surface 51 of rewritable paper P is erased for region L4 in a sub scan direction. At this point, IC inlet 52 absorbs the heat energy of heating elements 210a, but the heat energy for the region is supplemented with the heat energy of E3, so that a visible image is well erased without leaving any residual.
When rewritable paper P is positioned with respect to region L5 in a sub scan direction (Y of ACT 107), CPU 253 drives heating elements 210a of thermal print head 210 to generate the heat energy of E2 according to definition file 231 (ACT 114). Thereby, a visible image recorded on recording surface 51 of rewritable paper P is erased for region L5 in a sub scan direction.
CPU 253 checks out a flag state in ACT 108, and if flag F is 1 (Y of ACT 108), returns the flag to 0 (ACT 115). CPU 253 stops heating elements 210a (ACT 116). Then, CPU 253 determines whether or not the next rewritable paper P to be erased is present (ACT 117). If so, the process returns to ACT 102 (Y of ACT 117). Otherwise, the process ends (N of ACT 117).
According to this embodiment, a visible image is erased by setting a temperature assigned to a region where IC inlet 52 is arranged to be higher than a temperature assigned to a region where IC inlet 52 is not arranged when thermal print head 210 is driven with respect to rewritable paper P. Thereby, high-temperature heat energy that may cause to form a visible image is not assigned to a region where IC inlet 52 is not arranged, and heat energy that may erase a visible image by supplementing heat absorbed by IC inlet 52 is assigned to the region where IC inlet 52 is arranged. Accordingly, it is allowed to erase a visible image even in the region where IC inlet 52 is mounted.
According to this embodiment, control unit 252 determines a position where IC inlet 52 is arranged according to definition file 231 as preset position data, thereby easily detecting the position of IC inlet 52.
Further, in this embodiment, a visible image is erased by setting a temperature assigned to the region where IC inlet 52 is arranged to be higher than a temperature assigned to the region where IC inlet 52 is not arranged. On the other hand, the temperature assigned to the region where IC inlet 52 is arranged may be set to be higher than the temperature assigned to the region where IC inlet 52 is not arranged even at the time of recording a visible image as well as the time of erasing a visible image.
Next, some embodiments are described with reference to
In this respect, in view of a sub scan direction, rewritable paper P has region L1 from the leading end of the conveying direction to a portion where IC inlet 52 is not installed, region L2 where IC inlet 52 is installed, and region L3 from a portion excluding IC inlet 52 to the rear end of the conveying direction.
When a visual image is erased, heating elements 210a of thermal print head 210 is driven to generate the heat energy of E2 for the regions where IC inlet 52 is not installed, and is driven to generate the heat energy of E3 for the regions where IC inlet 52 is installed.
When rewritable paper P is positioned with respect to region L1 in a sub scan direction (Y of ACT 203), CPU 253 sets flag F to 1 (ACT 207). Heating elements 210a of thermal print head 210 are driven to generate the heat energy of E2 according to definition file 231 (ACT 208). Thereby, for region L1 in a sub scan direction, a visible image recorded on recording surface 51 of rewritable paper P is erased.
When rewritable paper P is positioned with respect to region L2 in a sub scan direction (Y of ACT 204), CPU 253 drives heating elements 210a of thermal print head 210 to generate the heat energy of E3 according to definition file 231 (ACT 209). Thereby, a visible image recorded on recording surface 51 of rewritable paper P is erased for region L2 in a sub scan direction. At this point, IC inlet 52 absorbs the heat energy of heating elements 210a, but the heat energy for the region is supplemented with the heat energy of E3, so that a visible image is well erased without leaving any residual.
When rewritable paper P is positioned with respect to region L3 in a sub scan direction (Y of ACT 205), CPU 253 drives heating elements 210a of thermal print head 210 to generate the heat energy of E2 according to definition file 231 (ACT 210). Thereby, a visible image recorded on recording surface 51 of rewritable paper P is erased for region L3 in a sub scan direction.
CPU 253 checks out a flag state in ACT 206, and if flag F is 1 (Y of ACT 206), returns the flag to 0 (ACT 211). CPU 253 stops heating elements 210a (ACT 212). Then, CPU 253 determines whether or not the next rewritable paper P to be erased is present (ACT 213). If so, the process returns to ACT 202 (Y of ACT 213). Otherwise, the process ends (N of ACT 213).
As used in this application, entities for executing the actions can refer to a computer-related entity, either hardware, a combination of hardware and software, software, or software in execution. For example, an entity for executing an action can be, but is not limited to being, a process running on a processor, a processor, an object, an executable, a thread of execution, a program, and a computer. By way of illustration, both an application running on an apparatus and the apparatus can be an entity. One or more entities can reside within a process and/or thread of execution and an entity can be localized on one apparatus and/or distributed between two or more apparatuses.
The program for realizing the functions can be recorded in the apparatus, can be downloaded through a network to the apparatus and can be installed in the apparatus from a computer readable storage medium storing the program therein. A form of the computer readable storage medium can be any form as long as the computer readable storage medium can store programs and is readable by the apparatus such as a disk type ROM and a solid-state computer storage media. The functions obtained by installation or download in advance in this way can be realized in cooperation with an OS (Operating System) in the apparatus.
While certain embodiments have been described, these embodiments have been presented by way of example only, and are not intended to limit the scope of the inventions. Indeed, the novel device and method described herein may be embodied in a variety of other forms; furthermore, various omissions, substitutions and changes in the form of the device and method described herein may be made without departing from the spirit of the inventions. The accompanying claims and their equivalents are intended to cover such forms or modifications as would fall within the scope and spirit of the inventions.
Number | Date | Country | Kind |
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2009-212274 | Sep 2009 | JP | national |