JP2007021967A - Printer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a printer in which time and trouble to remove a recording medium is saved with no increase in cost. <P>SOLUTION: An ejection roller 42 is fixed by a holding member 43 provided with an urging part 43c, and an ejection roller 41 is urged against the ejection roller 42 by the urging part 43c. An instant-photography sheet 1001 is ejected to the outside of the printer 1 by the ejection rollers 41, 42 which rotate by a driving force from the instant-photography sheet 1001 transferred by a transfer roller. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a printer that records an image on a recording medium by conveying the recording medium on which the image is recorded and writing the image on the recording medium.

  Conventionally, printers that record images on instant photographic sheets are known. This printer is provided with a pack chamber in which an instant film pack containing a plurality of stacked instant photographic sheets is stored. The printer also has a claw (claw) or a claw that locks to the rear end in the conveyance direction of one instant photographic sheet among the instant photographic sheets loaded in the pack chamber and scrapes the instant photographic sheet in the conveyance direction. A mechanism such as a cam for scraping the claw is also provided.

  In order to record an image on the instant photographic sheet, the rear end of the first instant photographic sheet in the pack chamber is scraped up with a claw by the rotation of the cam or the like, and conveyed by a conveyance roller. The instant photographic sheet is irradiated with light from a light emitting element to write a latent image, and the processing liquid reservoir of the instant photographic sheet is crushed by a developing roller to develop the processing liquid. Such a printer is suitably incorporated in an instant camera (see, for example, Patent Document 1). Here, when the instant photographic sheet on which the image is recorded is discharged from the instant camera, the rear end portion of the instant photographic sheet is held by the camera body so that the instant photographic sheet is not accidentally dropped. The user pulls out the instant photographic sheet by hand and then takes the next photograph. However, when the instant photographic sheets are continuously ejected, the user is required to manually pull out the instant photographic sheets one by one.

Therefore, a take-out device that completely removes the instant photographic sheet from the camera body has been proposed (see, for example, Patent Document 2).
Japanese Patent Application Laid-Open No. 07-209719 JP 07-287302 A

  However, the take-out device proposed in Patent Document 2 described above includes a switch that detects that a part of an instant photographic sheet as a recording medium has been discharged from the camera body, a motor that is driven by detection by the switch, An extraction roller that rotates in response to the driving force from the motor is required. For this reason, there exists a problem that the structure of an apparatus is complicated and cost rises.

  SUMMARY OF THE INVENTION In view of the above circumstances, an object of the present invention is to provide a printer in which the trouble of pulling out a recording medium is reduced while suppressing an increase in cost.

The printer of the present invention that achieves the above object is a printer that records an image on the recording medium by writing the image on the recording medium while conveying the recording medium on which the image is recorded.
A driving source that generates power by receiving power supply;
A conveying roller that rotates by receiving a driving force from the driving source and conveys the recording medium;
And a discharge roller that receives a driving force from a recording medium that has been conveyed and is located downstream of the conveying roller in the conveying direction, and rotates with the recording medium interposed therebetween.

  The printer of the present invention is configured to discharge the recording medium to the outside of the printer by a discharge roller that rotates in response to the driving force from the recording medium conveyed by the conveyance roller. Therefore, when discharging the recording medium to the outside of the printer, a conventional switch for detecting that a part of the recording medium has been discharged and a motor for rotating the discharge roller by being driven by the switch are provided. Compared with other technologies, the configuration is simplified. Therefore, the trouble of pulling out the recording medium while suppressing the cost increase is reduced.

Here, the recording medium is an instant photographic sheet on which a latent image is formed by exposure and an image visualized by development is recorded,
It is preferable to have a light-shielding portion that prevents entry of external light upstream of the discharge roller in the transport direction.

  In this way, a discharge roller may be provided outside the existing printer. Therefore, it is not necessary to modify the existing printer so much that the present invention can be easily applied to the existing printer.

  It is also a preferable aspect that a developing roller is provided between the conveying roller and the discharge roller so as to sandwich the conveyed instant photographic sheet and develop a developer on the instant photographic sheet.

  As described above, when the developing roller is provided between the transport roller and the discharge roller, a compact printer can be realized.

  According to the present invention, it is possible to provide a printer in which the trouble of pulling out a recording medium is reduced while suppressing an increase in cost.

  Hereinafter, embodiments of the present invention will be described.

  FIG. 1 is a perspective view of a printer according to an embodiment of the present invention as viewed obliquely from the front.

  The printer 1 is used in combination with a mobile phone or the like. A plurality of instant photographic sheets (here, a latent image is formed by exposure and a processing liquid is developed and visualized upon delivery) In this example, the laminated instant film pack is loaded into the pack chamber, and the instant photographic sheet is exposed according to the image data and sent out to the outside, and the processing solution is developed on the instant photographic sheet. . This instant photographic sheet corresponds to an example of the recording medium referred to in the present invention.

  Some mobile phones can perform infrared communication conforming to IrDA (Infrared Data Association). Using this infrared communication, you can send your information to other information devices. If there is, the image data can be transmitted to the printer 1. When the printer 1 receives image data representing an image taken by the camera-equipped cellular phone or image data transmitted to the cellular phone by e-mail or the like, the printer 1 uses infrared communication to transmit the image data. An image is recorded on the instant photographic sheet based on the image data, and the re-recording of the image based on the transmitted image data can be repeated without having to retransmit from the mobile phone. It can be done on another instant photo sheet with a simple operation of operating a switch.

  The printer 1 is a portable printer having a thin, light, and small structure as shown in FIG. 1, and includes two 3V primary batteries. An instant film pack is loaded in the casing 1a of the printer 1, and an image is recorded on each of the ten instant photographic sheets stacked in the instant film pack.

  On the upper surface of the casing 1a of the printer 1, as operation buttons, a power switch (hereinafter referred to as a power SW) 11 for instructing to turn on and off the power of the printer 1 and an image replay based on the transmitted image data. A repeat switch (hereinafter referred to as repeat SW) 12 for recording is provided. A counter 13 indicating the remaining number of instant film sheets is provided on the upper surface of the housing 1a. The counter 13 is a mechanical counter, and when an unused instant film pack is loaded, a numerical value “10” indicating that the remaining number is 10 is displayed. Hereinafter, each time an image is recorded on the instant photographic sheet, a numerical value indicating the remaining number is displayed, and when the image is recorded on the tenth instant photographic sheet, the remaining number is zero. A numerical value “0” indicating this is displayed. When the instant film pack is removed, a blank state is displayed in which nothing is displayed.

  A transmission / reception unit 14 is provided at the end of the printer 1. The transmission / reception unit 14 receives the image data transmitted by the infrared communication described above, and transmits a signal for notifying the other party that the image data has been received.

  In addition, the casing 1a of the printer 1 is turned on when the power is turned on and also flashes when the infrared communication is performed, the power LED 15 is turned on, the communication error LED 16 is turned on when an error occurs in the infrared communication, and the built-in battery voltage. When the battery voltage decreases, a low-battery display LED 17 that is lit to prompt the user to replace the battery is provided.

  Further, the side face of the printer 1 is provided with a film door opening switch 18 provided on the lower surface side of the printer 1 for opening a film door, which will be described later, and the corner portion is provided with a strap attaching portion 1b. ing.

  FIG. 2 is a diagram illustrating a state in which an instant photographic sheet on which an image is recorded based on image data from a camera-equipped mobile phone is discharged in the printer illustrated in FIG.

  With the infrared communication unit of the camera-equipped mobile phone 2 facing the transmission / reception unit 14 of the printer 1, the camera-equipped mobile phone 2 is operated to transmit image data representing an image taken by the camera-equipped mobile phone 2 by infrared communication. Is transmitted to the printer 1. The printer 1 receives image data transmitted by infrared communication, and records the latent image based on the received image data on the instant photographic sheet 1001 by exposure, while visualizing the instant photographic sheet 1001. The paper is gradually discharged from the outlet 19 of the printer 1 to the outside. Thereafter, when the repeat SW 12 is operated, the same image as that image is re-recorded on another instant photographic sheet.

  FIG. 3 is a perspective view of the lower surface side of the printer shown in FIG. 1 as viewed obliquely from above.

  A film door 20 that is opened by the operation of the film door opening switch 18 shown in FIG. 2 is provided on the lower surface side of the printer 1. The film door 20 is opened and an instant film pack is loaded into the pack chamber. The The film door 20 is provided with a pack presence / absence confirmation window 20a for confirming whether or not an instant film pack is loaded. Further, a battery cover 21 that is opened to mount a battery that serves as a power source of the printer 1 is also provided adjacent to the film door 20.

  FIG. 4 is a perspective view of the printer shown in FIG. 3 with the film door opened.

  The above-described pack presence / absence confirmation window 20a and spring members 20b and 20c are provided inside the film door 20, and an instant photographic sheet laminated in the instant film pack by these spring members 20b and 20c is printed on the printer. 1 is pressed to the upper surface side.

  Further, the printer 1 is provided with a pack chamber 22 for loading an instant film pack. On the right side in FIG. 4 outside the pack chamber 22, an image writing unit 300 for writing an image on an instant photographic sheet to be conveyed and a medium conveyance developing unit 30 are provided. Details of the image writing unit 300 and the medium transporting and developing unit 30 will be described later. Further, a claw (nail) 24 for sending the instant photographic sheet to the image writing unit 300 and the medium conveying / developing unit 30 side is provided below the pack chamber 22 in FIG. With such a configuration, of the instant photographic sheets in the instant film pack, the instant photographic sheet on the uppermost side of the printer 1 is picked up by the claw 24 and conveyed by the medium conveying / developing unit 30 to write an image. An image is written and developed by the unit 300.

  FIG. 5 is a perspective view of the printer according to the present embodiment when the housing is removed when viewed from the front side.

  FIG. 5 shows a DC motor 406 (corresponding to an example of a drive source referred to in the present invention) that generates a driving force upon receiving electric power, and a conveying roller and an unfolding device that describe the rotational driving force from the DC motor 406. A gear train 39 constituting the medium transporting and developing unit 30 that is transmitted to the rollers is shown. Further, FIG. 5 shows a pair of discharge rollers 41 and 42 sandwiching the instant photographic sheet 1001, a holding member 43 that holds the discharge rollers 41 and 42, and a light shielding portion 44. The light blocking portion 44 is provided on the upstream side in the transport direction of the discharge rollers 41 and 42 and plays a role of blocking the entry of external light. Further, FIG. 5 also shows a main substrate unit 100 and an image writing unit 300 described later.

  FIG. 6 is an enlarged view of the discharge roller sandwiching the instant photographic sheet shown in FIG. 5, and FIG. 7 is an enlarged view of the discharge roller after the instant photographic sheet is discharged.

  Ends 41a and 42a of the pair of discharge rollers 41 and 42 shown in FIGS. 6 and 7 that are in contact with both sides of the instant photographic sheet 1001 are made of rubber that is a high friction member. The pair of discharge rollers 41 and 42 are connected by gears 45 and 46. The peripheral speed ratio of these gears 45 and 46 is 1: 1. Further, as shown in FIG. 6, the holding member 43 includes a gap 43 a on an arc formed so as to surround a portion where the tip end portion of the discharge roller 41 is pivotally supported, and an arc-shaped gap 43 a. Two gaps 43b formed so as to extend in parallel with each other from the start point and the end point are provided. Further, the holding member 43 is provided with an urging portion 43c that is positioned between the gap portions 43b and plays the role of an urging member. Here, one discharge roller 42 of the pair of discharge rollers 41 and 42 is fixed, and the other discharge roller 41 is urged toward the discharge roller 42 by the urging portion 43c. When the photographic sheet 1001 enters, the photographic sheet 1001 rotates in the direction of the arrow B around the portion indicated by the arrow A.

  8 is a cross-sectional view of the printer shown in FIG.

  The medium conveying / developing unit 30 includes a pair of conveying rollers 31 and 32 that convey the instant photographic sheet 1001 with both side portions of the instant photographic sheet 1001 interposed therebetween. The conveyance roller 32 is urged toward the conveyance roller 31 by a spring member 35_1.

  In addition, the medium conveying / developing unit 30 is disposed downstream of the pair of conveying rollers 31 and 32 in the conveying direction of the instant photographic sheet 1001, and the processing liquid reservoir 1001 a is sandwiched across the entire width of the instant photographic sheet 1001. A pair of developing rollers 33 and 34 for crushing and developing the processing liquid is provided. The developing roller 34 is urged toward the developing roller 33 by a spring member 35_2.

  Further, the medium conveyance developing unit 30 includes control plates 36 and 37 for controlling the processing liquid being developed, which is located between the conveyance rollers 31 and 32 and the development rollers 33 and 34, and an instant photographic sheet 1001. A film guide frame 38 for guiding is provided. An image writing unit 300 is provided near the exit of the instant film pack 25.

  In addition, the pair of discharge rollers 41 and 42 described above is provided on the downstream side of the medium conveying and developing unit 30, and the discharge roller 41 is urged toward the discharge roller 42 by the urging unit 43c. The gap t between the pair of discharge rollers 41 and 42 is set larger than the thickness of one instant photographic sheet 1001 and smaller than the thickness of two sheets. Here, when the second instant photographic sheet 1001 enters the pair of discharge rollers 41 and 42, the urging unit 43c is not less than the weight of the instant photographic sheet 1001 between itself and the first instant photographic sheet 1001. The frictional force is set to occur. The holding member 43 described above holds the discharge rollers 41 and 42 so that the gap t is secured on the locus of the tip of the instant photographic sheet 1001 conveyed by the medium conveying and developing unit 30.

  The printer 1 according to the present embodiment is configured such that the instant photographic sheet 1001 on the uppermost side of the printer 1 among the instant photographic sheets 1001 in the instant film pack 25 is claw 24 (see FIG. 4) from a predetermined conveyance start point Ps. The image writing unit 300 starts writing an image at the fixed writing point Pf while being conveyed by the conveying rollers 31 and 32. Further, the printer 1 conveys the instant photographic sheet 1001 by the conveying rollers 31 and 32 while writing an image on the instant photographic sheet 1001, and develops the processing liquid by crushing the processing liquid reservoir 1001 a by the developing rollers 33 and 34. The developing processing liquid is controlled by the control plates 36 and 37 to perform development, and is transported to a predetermined transport end point Pe. Further, the printer 1 discharges the instant photographic sheet 1001 to the outside of the printer 1 by discharge rollers 41 and 42 that rotate by receiving driving force from the instant photographic sheet 1001 conveyed by the conveying rollers 31 and 32. For this reason, when the repeat SW 12 (see FIG. 1) is operated to continuously discharge the instant photographic sheet 1001 to the outside of the printer 1, a conventional switch for detecting that a part of the instant photographic sheet has been discharged, The configuration is simplified as compared with the technology provided with a motor that rotates the discharge roller by driving upon detection by the switch. Therefore, the trouble of pulling out the instant photographic sheet 1001 while reducing the cost is reduced. Further, since the urging portion 43c that urges the discharge roller 41 is formed integrally with the holding member 43, further cost reduction is achieved.

  FIG. 9 is a perspective view showing an exposure surface of an instant photographic sheet used in the printer of this embodiment, and FIG. 10 is a perspective view showing an observation surface of the instant photographic sheet shown in FIG.

  FIG. 9 shows an exposure surface 1001_1 of the instant photographic sheet 1001. On the exposure surface 1001_1, a processing liquid reservoir 1001a disposed at the front end of the instant photographic sheet 1001 in the conveyance direction, an exposure part 1001b on which an image is exposed, a blank part 1001c, and a trap part that absorbs excess processing liquid. 1001d. Further, FIG. 10 shows the observation surface 1001_2 side of the instant photographic sheet 1001. The observation surface 1001_2 is provided with an observation unit 1001e for observing an image formed by exposure to develop a latent image and developed by the processing liquid, and a blank portion 1001f.

  FIG. 11 is a block diagram showing the internal control system of the printer.

  A schematic diagram of the printer 1 shown in FIG. 1 is shown on the right end side of FIG. 11, and a configuration showing a control system of the printer 1 is shown in the entire area excluding the right end portion. Note that the arrows shown in FIG. 11 indicate the arrangement relationship of the components indicating the control system in the printer 1.

  The printer 1 includes a main board unit 100, a sub board unit 200, an image writing unit 300, an FPI unit 401, an ENCPI unit 402, a COUNTPI unit 403, a cam switch 404, and the transmission / reception unit 14 described above. IrDA transmission / reception unit 405 and DC motor 406 are provided.

  The sub-board unit 200 includes a power supply SW11, a repeat SW12, and a display LED unit 201, which are also shown in FIG. The display LED unit 201 includes a power LED 15, a communication error LED 16, a low battery display LED 17, and a counter backlight LED (not shown) provided on the back side of the counter 13.

  The image writing unit 300 includes an optical head unit 301 having a light guide, a liquid crystal shutter (LCS), and the like, flexible cables 302 and 303 that connect the optical head unit 301 and the main substrate unit 100, and a flexible cable 303. Light-emitting elements (LEDs) 304, 305, and 306 having emission colors of red (R), green (G), and blue (B) are provided. The image writing unit 300 is provided with three R, G, and B from the LEDs 304, 305, and 306 based on the image data received by the transmission / reception unit 14 in synchronization with the writing instruction pulse on the instant photographic sheet being conveyed. A latent image is written on the instant photographic sheet by cyclically irradiating two colored lights. The printer 1 includes two primary batteries 407 for 3V.

  Hereinafter, the main substrate unit 100 will be described. A power supply voltage VB of 6V from the primary battery 407 connected in series is applied to the main substrate unit 100. The main board unit 100 includes an MPU (Micro Processor Unit) 101, an oscillator 102, a reset circuit 103, a flash memory (FLASH) 104, and an SDRAM 105.

  The MPU 101 comprehensively controls the operation of the printer 1.

  The oscillator 102 generates an oscillation signal having a predetermined frequency and supplies it to the MPU 101 as an operation clock signal.

  The reset circuit 103 outputs a reset signal for initializing the MPU 101.

  The flash memory 104 is a non-volatile memory, and the flash memory 104 stores adjustment values for solid difference adjustment that are determined depending on a mechanism or the like unique to the printer 1.

  The SDRAM 105 is a volatile memory, and the SDRAM 105 stores image data from the camera-equipped mobile phone 2.

  The main board 100 is supplied with a power supply voltage VB of 6V, a power supply 106 for outputting a voltage of 2.5V, a power supply 107 for outputting a voltage of 3.3V, and a voltage of 15V. A DC / DC converter 108 is provided. Further, a power supply control unit 109 that controls the power supply units 106 and 107 and the DC / DC converter 108 in response to an instruction from the MPU 101 is also provided. Here, a voltage of 2.5 V is supplied to the MPU 101 and a voltage of 3.3 V is supplied to peripheral circuits other than the MPU 101. Moreover, the voltage of 15V is used for LCD drive mentioned later.

  In order to extend the life of the primary battery 407, the printer 1 includes the MPU 101 having a standby mode which is a low power consumption mode, and the MPU 101 completes the initial process even when the power switch 12 is pressed. At that time, it becomes standby mode. In this state, when infrared communication is performed from the outside, the standby mode is shifted to the normal operation mode, an image is recorded on the instant photographic sheet, and the normal operation mode is quickly shifted to the standby mode. Also, when the repeat SW 12 is pressed, after the image is recorded on the instant photographic sheet, the standby mode is set. Further, the MPU 101 controls the power supply units 106 and 107 and the DC / DC converter 108 via the power supply control unit 109 so that power is supplied to each unit only when necessary. In this way, the printer 1 can be used for a long time with the built-in primary battery 407.

  Further, the main substrate unit 100 includes a BC unit 110, a TPG unit 111, a temperature detection unit 112, an oscillator 113, an IrDA / LCS control unit 114, and a head LED driving unit 115.

  The BC unit 110 checks whether or not the power supply voltage VB of the primary battery 407 has decreased below a predetermined value. When the MPU 101 determines that the power supply voltage VB of the primary battery 407 is lower than a predetermined value with reference to the check result, the MPU 101 turns on the low battery display LED 17 to prompt the user to replace the battery. .

  The TPG unit 111 turns on and off the 15 V voltage output from the DC / DC converter 108.

  The temperature detection unit 112 detects the temperature of the image writing unit 300. The MPU 101 controls the shutter speed of each shutter unit of the liquid crystal shutter in the optical head unit 301 in accordance with the detection signal from the temperature detection unit 112.

  The oscillator 113 generates an oscillation signal having a predetermined frequency and supplies it to the IrDA / LCS control unit 114.

  The IrDA / LCS control unit 114 controls the IrDA transmission / reception unit 405 and the optical head unit 301 based on the oscillation signal from the oscillator 113. The IrDA transmission / reception unit 405 includes a light projecting element and a light receiving element for performing infrared communication, and the IrDA / LCS control unit 114 sends data photoelectrically converted by the light receiving element to the MPU 101 or from the MPU 101. Data for notifying an external device to that effect is transmitted to the outside via the light projecting element. Further, the IrDA / LCS control unit 114 controls a liquid crystal shutter provided in the optical head unit 301 via the flexible cable 302 based on an instruction from the MPU 101.

  The head LED drive unit 115 drives the LEDs 304, 305, and 306 by flowing a current based on an instruction from the MPU 101 to the LEDs 304, 305, and 306 via the flexible cable 303.

  The printer 1 according to this embodiment is configured such that the instant photographic sheet 1001 is fed by a DC motor 406 in a predetermined sub-scanning direction (the direction in which the instant photographic sheet 1001 is sent out) while the R, The three-color G and B colors are written cyclically, and in the main scanning direction intersecting with the sub-scanning direction, the same color is simultaneously written for all the pixels arranged in the main scanning direction, thereby obtaining the instant photograph. A color image is recorded on the sheet 1001.

  In recording a color image, a control signal corresponding to image data is supplied from the IrDA / LCS control unit 114 to the optical head unit 301 constituting the image writing unit 300 via the flexible cable 302. This control signal controls the shutter speed of each shutter section of the liquid crystal shutter in the optical head section 301. The shutter speed of each shutter unit is controlled according to the image data, and light corresponding to each of RGB from the LEDs 304, 305, and 306 provided in the flexible cable 303 is irradiated onto the instant photographic sheet, and the width of the instant photographic sheet. A latent image consisting of a number of light spots (dots) in the direction is recorded. The width direction, that is, the direction in which the shutter portions are arranged one-dimensionally is the main scanning direction. Accordingly, each shutter portion is electronically scanned in the main scanning direction, and a light spot (all pixels) for one line is recorded on the instant photographic sheet. By the electronic scanning of the optical head unit 301, light spots composed of a large number of dots are recorded in the main scanning direction of the instant photographic sheet. Further, as described above, in the present embodiment, the instant photographic sheet sheet 1001 is fed in the sub-scanning direction by the DC motor 406. Accordingly, the light spot is sequentially recorded for each of a large number of dots by the image writing unit 300 also in the sub-scanning direction.

  Further, the main board unit 100 is provided with a PI driving unit 116. The PI driving unit 116 drives the FPI unit 401, the ENCPI unit 402, and the COUNTPI unit 403. Here, the FPI unit 401, the ENCPI unit 402, and the COUNTPI unit 403 will be described.

  The FPI unit 401 is a photo interrupter for detecting the presence or absence of the instant photographic sheet 1001.

  The ENCPI unit 402 is a photo interrupter for outputting an encode signal composed of a pulse train synchronized with the rotation of the DC motor 406.

  The COUNTPI unit 403 is a photointerrupter for the counter 13 to detect a reset state (a state where the instant film pack is removed).

  A cam switch 404 is connected to the main board portion 100. The cam switch 404 is a switch for monitoring an initial position in the transport mechanism of the printer 1.

  Further, the main board part 100 is provided with a motor driving part 117. In response to an instruction from the MPU 101, the motor drive unit 117 controls the rotational speed of the DC motor 406 so that the time interval of the pulse train of the encode signal output from the ENCPI unit 402 becomes a predetermined time interval.

  In this embodiment, an example of an instant photographic sheet has been described as a recording medium. However, the present invention is not limited to this, and the recording medium according to the present invention may be a recording medium on which an image is recorded.

It is the perspective view which looked at the printer of one Embodiment of this invention from diagonally forward. FIG. 2 is a diagram illustrating a state in which an instant photographic sheet on which an image is recorded based on image data from a camera-equipped mobile phone is discharged in the printer illustrated in FIG. 1. It is the perspective view which looked at the lower surface side of the printer shown in FIG. 1 from diagonally upward. FIG. 4 is a perspective view of the printer shown in FIG. 3 in a state where a film door is opened. FIG. 3 is a perspective view of the printer according to the embodiment when the housing is removed when viewed from the front side. It is a figure which expands and shows the discharge roller which pinched | interposed the instant photographic sheet shown in FIG. It is a figure which expands and shows the discharge roller after an instant photographic sheet is discharged. FIG. 6 is a cross-sectional view including a discharge roller of the printer shown in FIG. 5. It is a perspective view which shows the exposure surface of the instant photographic sheet used for the printer of this embodiment. It is a perspective view which shows the observation surface of the instant photographic sheet shown in FIG. FIG. 2 is a configuration block diagram showing a control system inside the printer.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Printer 1a Case 1b Strap attachment part 2 Cellular phone with camera 11 Power switch (Power SW)
12 Repeat switch (repeat SW)
13 Counter 14 Transceiver 15 Power LED
16 Communication error LED
17 LED for low battery display
18 Film door opening switch 19 Outlet 20 Film door 20a Pack presence / absence confirmation window 20b, 20c, 35_1, 35_2 Spring member 21 Battery cover 22 Pack chamber 24 Claw
25 Instant Film Pack 30 Media Conveying and Exploring Unit 31, 32 Conveying Roller 33, 34 Developing Roller 36, 37 Control Plate 38 Film Guide Frame 39 Gear Train 41, 42 Discharge Roller 41a, 42a End 43 Holding Member 43a, 43b Gap 43c Energizing part 44 Light-shielding part 45, 46 Gear 100 Main board part 101 MPU
102, 113 Oscillator 103 Reset circuit 104 Flash memory 105 SDRAM
106, 107 Power supply unit 108 DC / DC converter 109 Power supply control unit 110 BC unit 111 TPG unit 112 Temperature detection unit 114 IrDA / LCS control unit 115 Head LED drive unit 116 PI drive unit 117 Motor drive unit 200 Sub-board unit 201 For display LED unit 300 Image writing unit 301 Optical head unit 302, 303 Flexible cable 304, 305, 306 Light emitting element (LED)
401 FPI part 402 ENCPI part 403 COUNTPI part 404 Cam switch 405 IrDA transmission / reception part 406 DC motor 407 Primary battery 1001 Instant photographic sheet 1001_1 Exposure surface 1001_2 Observation surface 1001a Development pool 1001b Exposure part 1001c, 1001f Blank part 1001d Blank part 1001d

Claims (3)

In a printer that records an image on the recording medium by writing the image on the recording medium while conveying the recording medium on which the image is recorded,
A driving source that generates power by receiving power supply;
A conveying roller that rotates by receiving a driving force from the driving source and conveys the recording medium;
A printer comprising: a discharge roller that receives a driving force from a recording medium that is located downstream of the conveying roller in the conveying direction and that is conveyed, and rotates with the recording medium interposed therebetween. The recording medium is an instant photographic sheet on which a latent image is formed by exposure and an image visualized by development is recorded,
The printer according to claim 1, further comprising a light blocking portion that prevents entry of external light upstream of the discharge roller in the transport direction.   3. The printer according to claim 2, further comprising a developing roller for developing a developer on the instant photographic sheet with the conveyed instant photographic sheet interposed between the conveying roller and the discharge roller.

Images