Imaging Device and Imaging Method

Abstract

To provide an imaging apparatus capable of suppressing the decrease of the number of taken photographs due to the performance deterioration of a battery.SOLUTION: An imaging apparatus 1 includes a battery 10, a shutter 20, and rotors 30 and 31. The operation determination part 91 of a control part 80 energizes a shutter motor 50 and stops photographing when it is determined that a measurement voltage V1 at this time is lower than a threshold T1. When it is determined that the voltage V1 is higher than the threshold T1, a roller motor 60 is energized and a measurement voltage V2 at this time is compared with the voltage V1. When the voltage V1 is higher than the voltage V2, a signal capable of boosting is transmitted to the motor control part 91. When the voltage V1 is lower than the voltage V2, a signal incapable of boosting is transmitted to the motor control part 91. The motor control part 91 receives the signal capable of boosting from the operation determination part 92 to boost the voltage of the battery 10 by a boosting part 70 and supply it to the shutter motor 50 and the roller motor 60, and receives the signal incapable of boosting to supply the voltage of the battery 10 to the roller motor 60.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to an imaging device and an imaging method, and particularly to an imaging device driven by a battery.

Background Art

[0002] Conventionally, in a camera powered by a battery, it is checked whether the voltage of the battery exceeds a predetermined voltage value, and shooting is performed only when the voltage exceeds the predetermined voltage value. When the voltage falls below the predetermined voltage value, a battery check is performed to notify that the remaining battery level has decreased (see, for example, Patent Document 1).

[0003] Further, in such a camera, in order to compensate for the low voltage of the battery, the voltage of the battery is boosted by a booster circuit to a constant voltage and supplied to various motors. In this case, if a motor with a high load (for example, a motor that drives a roller for transporting a photographic film) cannot be boosted during shooting, the operation of the camera will stop halfway, which becomes a serious defect in terms of product quality. Therefore, in addition to the above-described battery check, prior to shooting, it is checked whether the voltage of the battery can be boosted to the voltage to be supplied to the motor, and shooting is performed only when boosting is possible, and control is performed so that shooting is not performed when boosting is not possible (boost check).

[0004] Therefore, in a conventional camera, when the capacity of the battery remains but the battery voltage cannot be sufficiently boosted, although the battery check passes, shooting becomes impossible due to the boost check. Such a situation where the capacity of the battery remains but the battery voltage cannot be sufficiently boosted easily occurs at low temperatures where the chemical reaction inside the battery becomes sluggish and the performance of the battery deteriorates. Therefore, in a low-temperature environment, it is often determined that shooting is impossible due to the above-described boost check, and the number of photos that can be taken decreases.

Prior Art Documents

Patent Documents

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2021-83043 [Summary of the Invention] [Problems to be Solved by the Invention]

[0006] The present invention has been made in view of such problems of the prior art, and an object thereof is to provide an imaging device and an imaging method capable of suppressing a decrease in the number of photos that can be taken due to a decrease in battery performance. [Means for Solving the Problems]

[0007] According to a first aspect of the present invention, there is provided an imaging device capable of suppressing a decrease in the number of photos that can be taken due to a performance degradation of a battery. This imaging device includes a battery as a power source, a first member, a first motor that drives the first member, a second member, a second motor that drives the second member, a voltage measurement unit that measures the voltage of the battery, a boosting unit that can boost the voltage of the battery and supply it to the first motor or the second motor, a motor control unit that can control the operations of the first motor and the second motor, and an operation determination unit that determines whether the first motor and the second motor can be driven. The second motor has a higher load on the battery than the first motor. The operation determination unit receives a signal indicating that the release button has been pressed, energizes the first motor, and determines whether a voltage V1 measured by the voltage measurement unit at this time is lower than a predetermined threshold value. If it is determined that the voltage V1 is lower than the threshold value, the photographing is aborted. If it is determined that the voltage V1 is higher than the threshold value, the second motor is energized, and the voltage V2 measured by the voltage measurement unit at this time is compared with the voltage V1. If the voltage V1 is higher than the voltage V2, a boostable signal is transmitted to the motor control unit. If the voltage V1 is lower than the voltage V2, a non-boostable signal is transmitted to the motor control unit. The motor control unit is configured to boost the voltage of the battery by the boosting unit and supply it to the first motor and the second motor when receiving the boostable signal from the operation determination unit, and supply the voltage of the battery to the second motor when receiving the non-boostable signal from the operation determination unit.

[0008] According to a second aspect of the present invention, there is provided an imaging method capable of suppressing a decrease in the number of photos that can be taken due to a decrease in battery performance. This imaging method includes a battery as a power source, a first member, a first motor that drives the first member, a second member, and a second motor that drives the second member, where the second motor has a higher load on the battery than the first motor, and a booster unit capable of supplying a current obtained by boosting the voltage of the battery to at least one of the first motor and the second motor. In this imaging method, when the release button is pressed, the first motor is energized, and it is determined whether the voltage V1 of the battery measured at this time is lower than a predetermined threshold value. If it is determined that the voltage V1 is lower than the threshold value, shooting is not performed. If it is determined that the voltage V1 is higher than the threshold value, the second motor is energized, and the voltage V2 measured at this time is compared with the voltage V1. If the voltage V1 is higher than the voltage V2, the voltage of the battery is boosted and supplied to the first motor and the second motor. If the voltage V1 is lower than the voltage V2, the voltage of the battery is supplied to the second motor.

Brief Description of the Drawings

[0009]

Figure 1

Figure 2

Figure 3

Embodiments for Carrying Out the Invention

[0010] Hereinafter, embodiments of the imaging apparatus and imaging method according to the present invention will be described in detail with reference to FIGS. 1 to 3. In FIGS. 1 to 3, the same or corresponding components are denoted by the same reference numerals, and redundant descriptions are omitted. Further, in FIGS. 1 to 3, the scales and dimensions of each component may be exaggerated or some components may be omitted. In the following description, unless otherwise specified, terms such as "first" and "second" are used only to distinguish components from each other and do not represent a specific order or sequence.

[0011] FIG. 1 is a block diagram schematically showing an imaging apparatus 1 according to an embodiment of the present invention. The imaging apparatus 1 in the present embodiment is a camera (instant camera) using a photographic film that can be automatically developed after shooting. Needless to say, the present invention can be applied to other than such an instant camera. As shown in FIG. 1, the imaging apparatus 1 of the present embodiment includes a battery 10 as a power source, a shutter 20 (first member) that controls the exposure time, a pair of rollers 30 and 31 (second member) that convey the photographic film after shooting, a strobe 35 that emits light at the time of shooting, a shutter motor 50 (first motor) that drives the shutter 20, a shutter motor driver 51 that controls the shutter motor 50, a roller motor 60 (second motor) that drives the roller 30, a roller motor driver 61 that controls the roller motor 60, a booster unit 70 that can boost the voltage of the battery 10, a release switch 37 that operates in conjunction with the pressing of a release button (not shown), a control unit 80 that controls the operation of various electrical components, a voltage measurement unit 82 that measures the voltage of the battery 10, and a storage unit 84 configured by a flash memory or the like. For example, a 1.5V dry battery is used as the battery 10.

[0012] The boosting unit 70 includes a motor boosting circuit 71 that boosts the DC voltage from the battery 10 to, for example, 3.3V according to a signal from the control unit 80 and supplies it to the shutter motor driver 51 or the roller motor driver 61, a strobe boosting circuit 72 that boosts the DC voltage from the battery 10 to, for example, about 300V according to a signal from the control unit 80 and supplies it to the strobe 35, and a control boosting circuit 73 that boosts the DC voltage from the battery 10 to, for example, 3.3V and supplies it to the control unit 80. For example, these boosting circuits 71, 72, 73 are each constituted by a DC-DC converter. Note that the motor boosting circuit 71 may be constituted by two boosting circuits that supply voltage to each of the shutter motor driver 51 and the roller motor driver 61.

[0013] The shutter motor driver 51 can rotate the shutter motor 50 by the power supplied from the motor boosting circuit 71 according to a signal from the control unit 80, for example, and drive (open) the shutter 20. The roller motor driver 61 can rotate the roller motor 60 by the power supplied from the motor boosting circuit 71 according to a signal from the control unit 80, for example, and drive one of the pair of rollers 30, 31, i.e., the roller 30. Here, the roller motor 60 has a greater load on the battery 10 than the shutter motor 50.

[0014] The strobe 35 is charged by the voltage supplied from the strobe boosting circuit 72, for example, and emits light in conjunction with the shutter 20 according to a signal from the control unit 80.

[0015] The voltage measurement unit 82 is configured to measure the potential difference between the positive and negative electrodes of the battery 10 and output this measurement result to the control unit 80. For example, a digital value representing the potential difference is output to the control unit 80 as the measurement result.

[0016] The control unit 80 is composed of electronic components such as a CPU and a memory mounted on a substrate, for example, and operates by the power supplied from the control boost circuit 73. Some components of this control unit 80 are realized by a program stored in the memory being executed by the CPU. In the storage unit 84, threshold values (for example, threshold values T0 and T1 described later), measured voltage values (for example, measured voltages V1 and V2 described later), and other data used in the control of the control unit 80 are stored. Also, as shown in FIG. 1, the control unit 80 includes a motor control unit 91 capable of controlling the operations of the shutter motor 50 and the roller motor 60, and an operation determination unit 92 that determines whether or not to drive the shutter motor 50 and the roller motor 60.

[0017] Next, the processing performed when the imaging device 1 is powered on will be described. FIG. 2 is a flowchart showing the processing performed when the imaging device 1 is powered on. As shown in FIG. 2, when the imaging device 1 is powered on, the voltage of the battery 10 is boosted to a predetermined level by the control boost circuit 73, and the voltage boosted by the control boost circuit 73 is supplied to the control unit 80 (step S1). Next, the control unit 80 outputs a boost signal to the motor boost circuit 71, and the motor boost circuit 71 boosts the voltage of the battery 10 to a predetermined level in response to the boost signal from the control unit 80 and supplies it to the shutter motor driver 51 (step S2). At this time, a signal for inverting the polarity is sent from the control unit 80 to the shutter motor driver 51, and the shutter motor driver 51 that has received the boosted voltage drives the shutter motor 50 in the reverse rotation direction, that is, drives it in the direction to close the shutter 20 (reverse drive). Driving the shutter motor 50 in reverse rotation in this way is to prevent the shutter 20 from accidentally opening and exposing the photographic film inside the imaging device 1.

[0018] At this time, the voltage measurement unit 82 measures the voltage of the battery 10 and outputs the measured voltage V0 to the control unit 80 (step S3). The control unit 80, to which the measured voltage V0 is input from the voltage measurement unit 82, compares this measured voltage V0 with the threshold value T0 stored in the storage unit 84 (step S4). This threshold value T0 indicates the minimum necessary voltage for driving the imaging device 1 and is set to, for example, 2.4V.

[0019] When the measured voltage V0 is less than or equal to the threshold value T0, the control unit 80 determines that the output of the battery 10 is not sufficient to drive the imaging device 1, and notifies the user that the remaining amount of the battery 10 is insufficient by, for example, flashing an LED (not shown) (step S5). The user who knows this notification can replace or charge the battery 10.

[0020] On the other hand, when the measured voltage V0 is higher than the threshold value T0, the control unit 80 outputs a boosting signal to the strobe boosting circuit 72, and the strobe boosting circuit 72 boosts the voltage of the battery 10 to a predetermined level in response to the boosting signal from the control unit 80 and supplies it to the strobe 35 (step S6). At this time, a charging timer for measuring the charging time to the capacitor of the strobe 35 is started.

[0021] Next, the control unit 80 detects the charging state of the capacitor of the strobe 35 and determines whether or not the charging of the capacitor of the strobe 35 is completed (step S7). If it is determined that the charging of the capacitor of the strobe 35 is not completed, the control unit 80 determines whether or not the charging timer has exceeded a predetermined time, for example, 15 seconds (step S8), and if it has not exceeded the predetermined time, continues charging the capacitor of the strobe 35.

[0022] On the other hand, when the charging timer has exceeded the predetermined time, the control unit 80 determines that some abnormality has occurred in the strobe 35, and notifies the user that an abnormality has occurred in the strobe 35 by, for example, flashing an LED (step S9).

[0023] In step S7, when the control unit 80 determines that the charging of the capacitor of the strobe 35 is completed, since the imaging state becomes possible, the control unit 80 shifts to the standby state (step S10).

[0024] Next, the processing performed when the user presses the release button in this standby state will be described. FIG. 3 is a flowchart showing the processing performed when the user presses the release button in the standby state of the imaging device 1. When the release button is pressed, the release switch 37 is turned on in conjunction with this, and a release signal indicating that the release button has been pressed is output from the release switch 37 to the operation determination unit 92 of the control unit 80 (step S21).

[0025] The operation determination unit 92 of the control unit 80 that has received the release signal outputs a boosting signal to the motor boosting circuit 71, and the motor boosting circuit 71 boosts the voltage of the battery 10 to a predetermined level in response to the boosting signal from the operation determination unit 92 and supplies it to the shutter motor driver 51 (step S22). At this time, a signal for inverting the polarity is sent from the operation determination unit 92 of the control unit 80 to the shutter motor driver 51, and the shutter motor driver 51 that has received the boosted voltage drives the shutter motor 50 in the reverse rotation direction to close the shutter 20 (reverse drive).

[0026] At this time, the voltage measurement unit 82 measures the voltage of the battery 10 and outputs the measured voltage V1 to the operation determination unit 92 (step S23). The operation determination unit 92 that has received the measured voltage V1 from the voltage measurement unit 82 stores this measured voltage V1 in the storage unit 84 and also compares it with the threshold value T1 stored in the storage unit 84 (step S24). This threshold value T1 indicates the minimum voltage required for the imaging device 1 to perform imaging, and may be the same as the above-described threshold value T0, and is set to, for example, 2.4V.

[0027] When the measured voltage V1 is less than or equal to the threshold value T1, the operation determination unit 92 determines that the output of the battery 10 is not sufficient for the imaging device 1 to perform shooting, and stops the shooting. At this time, for example, by blinking an LED, the user is notified that the remaining amount of the battery 10 is insufficient (step S25). The user who knows this notification can replace or charge the battery 10.

[0028] On the other hand, when the measured voltage V1 is higher than the threshold value T1, the operation determination unit 92 outputs a boosting signal to the motor boosting circuit 71. The motor boosting circuit 71 receives the boosting signal from the operation determination unit 92, boosts the voltage of the battery 10 to a predetermined level, and supplies it to the roller motor driver 61 (step S26). The roller motor driver 61 that has received the boosted voltage from the operation determination unit 92 rotates the roller motor 60.

[0029] At this time, the voltage measurement unit 82 measures the voltage of the battery 10 and outputs the measured voltage V2 to the operation determination unit 92 (step S27). The operation determination unit 92, which has received the measured voltage V2 from the voltage measurement unit 82, compares this measured voltage V2 with the measured voltage V1 stored in the storage unit 84 (step S28).

[0030] When the measured voltage V1 when driving the shutter 20 is higher than the measured voltage V2 when driving the roller 30 with a higher load than the shutter 20, it is considered that there is no degradation in the performance of the battery 10, so normal shooting is performed. That is, the operation determination unit 92 outputs a boostable signal indicating that the voltage of the battery 10 can be boosted to the level required by the roller motor 60 to the motor control unit 91. The motor control unit 91 receives the boostable signal from the operation determination unit 92 and outputs a boost signal to the motor boost circuit 71. The motor boost circuit 71 receives the boost signal from the motor control unit 91, boosts the voltage of the battery 10 to a predetermined level, and supplies it to the shutter motor driver 51 to drive the shutter motor 50 to open the shutter 20 (step S29). Thereby, the photographic film accommodated in the imaging device 1 is exposed. Thereafter, the shutter 20 is closed, and the control unit 80 outputs a signal to a feeding mechanism (not shown) to feed out the photographic film exposed by shooting between the rollers 30 and 31. Then, the motor control unit 91 of the control unit 80 outputs a boost signal to the motor boost circuit 71. The motor boost circuit 71 receives the boost signal from the motor control unit 91, boosts the voltage of the battery 10 to a predetermined level, and supplies it to the roller motor driver 61 to drive the roller motor 60 to rotate the roller 30 (step S30). Thereby, the photographic film containing the developing solution is discharged while being pressed from both sides between the rollers 30 and 31. At this time, the contained developing solution is developed in the photographic film, and the developing process of the photographic film is performed.

[0031] On the other hand, when the measured voltage V1 when driving the shutter 20 is lower than the measured voltage V2 when driving the roller 30 with a higher load than the shutter 20, it is considered that the imaging device 1 is placed in a special environment such as a low-temperature environment. Even without boosting the voltage of the battery 10, the roller 30 can be driven by using the voltage of the battery 10, although the speed will be slower. Therefore, the operation determination unit 92 outputs a non-boostable signal indicating that the voltage of the battery 10 cannot be boosted to the level required by the roller motor 60 to the motor control unit 91. Even in this case, since it is considered that the voltage of the battery 10 can be boosted to the level required by the shutter motor 50, the motor control unit 91 outputs a boost signal to the motor boost circuit 71 in response to the non-boostable signal from the operation determination unit 92. The motor boost circuit 71 boosts the voltage of the battery 10 to a predetermined level in response to the boost signal from the operation determination unit 92 and supplies it to the shutter motor driver 51 to drive the shutter motor 50 to open the shutter 20 (step S31). Thereby, exposure is performed on the photographic film housed in the imaging device 1. Thereafter, the shutter 20 is closed, and the control unit 80 outputs a signal to a feeding mechanism (not shown) to feed out the photographic film exposed by shooting between the rollers 30 and 31. Then, the motor control unit 91 of the control unit 80 does not output a boost signal to the motor boost circuit 71, supplies the voltage of the battery 10 to the roller motor driver 61, and drives the roller motor 60 with the voltage of the battery 10 to rotate the roller 30 (step S32). Thereby, the photographic film containing the developing solution is discharged while being pressed from both sides between the rollers 30 and 31. At this time, the contained developing solution spreads within the photographic film, and the developing process of the photographic film is performed.

[0032] As described above, according to this embodiment, even when the voltage of the battery 10 cannot be sufficiently boosted by the motor booster circuit 71 although there is still sufficient capacity in the battery 10, the shooting can be continued by driving the high-load roller motor 60 with the voltage of the battery 10 without stopping the shooting. Therefore, for example, even in a situation where the performance of the battery 10 deteriorates in a low-temperature environment or the like, the shooting can be continued, and it is possible to suppress a decrease in the number of photos that can be taken.

[0033] In this embodiment, an example has been described in which the first motor with a relatively low load on the battery 10 is the shutter motor 50 that drives the shutter 20, and the second motor with a relatively high load on the battery is the roller motor 60 that drives the roller 30. However, the present invention is not limited to such a combination.

[0034] As described above, according to the first aspect of the present invention, there is provided an imaging device capable of suppressing a decrease in the number of photos that can be taken due to a decrease in battery performance. This imaging device includes a battery as a power source, a first member, a first motor that drives the first member, a second member, a second motor that drives the second member, a voltage measurement unit that measures the voltage of the battery, a booster unit that boosts the voltage of the battery and can supply it to the first motor or the second motor, a motor control unit that can control the operations of the first motor and the second motor, and an operation determination unit that determines whether the first motor and the second motor can be driven. The second motor has a higher load on the battery than the first motor. The operation determination unit receives a signal indicating that the release button has been pressed, energizes the first motor, and determines whether the voltage V1 measured by the voltage measurement unit at this time is lower than a predetermined threshold value. If it is determined that the voltage V1 is lower than the threshold value, the shooting is aborted. If it is determined that the voltage V1 is higher than the threshold value, the second motor is energized, and at this time, the voltage V2 measured by the voltage measurement unit is compared with the voltage V1. If the voltage V1 is higher than the voltage V2, a boostable signal is transmitted to the motor control unit. If the voltage V1 is lower than the voltage V2, a non-boostable signal is transmitted to the motor control unit. When the motor control unit receives the boostable signal from the operation determination unit, it boosts the voltage of the battery by the booster unit and supplies it to the first motor and the second motor. When the motor control unit receives the non-boostable signal from the operation determination unit, it supplies the voltage of the battery to the second motor. The first member is, for example, a shutter that controls the exposure time, and the second member is, for example, one of a pair of rollers that transports the photographic film.

[0035] According to a second aspect of the present invention, there is provided an imaging method capable of suppressing a decrease in the number of photos that can be taken due to a decrease in battery performance. This imaging method includes a battery as a power source, a first member, a first motor that drives the first member, a second member, and a second motor that drives the second member. The second motor has a higher load on the battery than the first motor, and a booster unit that can supply a current obtained by boosting the voltage of the battery to at least one of the first motor and the second motor. In this imaging method, when the release button is pressed, the first motor is energized, and it is determined whether the voltage V1 of the battery measured at this time is lower than a predetermined threshold value. If it is determined that the voltage V1 is lower than the threshold value, shooting is not performed. If it is determined that the voltage V1 is higher than the threshold value, the second motor is energized, and the voltage V2 measured at this time is compared with the voltage V1. If the voltage V1 is higher than the voltage V2, the voltage of the battery is boosted and supplied to the first motor and the second motor. If the voltage V1 is lower than the voltage V2, the voltage of the battery is supplied to the second motor. The first member is, for example, a shutter that controls the exposure time, and the second member is, for example, one of a pair of rollers that convey a photographic film.

[0036] According to the present invention, even in a case where the battery capacity remains sufficient but the battery voltage cannot be boosted sufficiently, the second motor with a high load can be driven by the battery voltage without stopping shooting, so that shooting can be continued. Therefore, for example, shooting can be continued even when the battery performance deteriorates in a low-temperature environment or the like, and a decrease in the number of photos that can be taken can be suppressed.

[0037] Although the preferred embodiments of the present invention have been described so far, it goes without saying that the present invention is not limited to the above-described embodiments and may be implemented in various different forms within the scope of its technical idea.

Explanation of Reference Numerals

[0038] 1 Imaging device 10 Battery 20 Shutter (first member) 30 Roller (second member) 31 Roller 35 Strobe 37 Release switch 50 Shutter motor (first motor) 51 Shutter motor driver 60 Roller motor (second motor) 61 Roller motor driver 70 Boosting section 71 Boosting circuit for motor 72 Boosting circuit for strobe 73 Boosting circuit for control 80 Control section 82 Voltage measurement section 84 Memory section 91 Motor control section 92 Operation determination section

Claims

1. A battery as a power source, A first member, A first motor for driving the first member, A second member, A second motor for driving the second member, which is a second motor with a higher load on the battery than the first motor, A voltage measurement unit for measuring the voltage of the battery, A boosting unit capable of boosting the voltage of the battery and supplying it to the first motor or the second motor, A motor control unit capable of controlling the operations of the first motor and the second motor, An operation determination unit for determining whether the first motor and the second motor can be driven and comprising, The operation determination unit, receives a signal indicating that the release button has been pressed, energizes the first motor, and determines whether the voltage V measured by the voltage measurement unit at this time 1 is lower than a predetermined threshold value, When it is determined that the voltage V 1 is lower than the threshold value, the shooting is aborted, When it is determined that the voltage V 1 is higher than the threshold value, the second motor is energized, and the voltage V measured by the voltage measurement unit at this time 2 and the voltage V 1 are compared, When the voltage V 1 is higher than the voltage V 2 a boostable signal is transmitted to the motor control unit, When the voltage V 1 is lower than the voltage V 2 a non-boostable signal is transmitted to the motor control unit and is configured as such, The motor control unit, when receiving the boostable signal from the operation determination unit, boosts the voltage of the battery by the boosting unit and supplies it to the first motor and the second motor, When receiving the boosting impossible signal from the operation determination unit, supply the voltage of the battery to the second motor. An imaging device configured as described above.

2. The imaging device according to claim 1, wherein the first member is a shutter that controls an exposure time.

3. The imaging device according to claim 1 or 2, wherein the second member is one of a pair of rollers that convey a photographic film.

4. A battery as a power source, a first member, a first motor that drives the first member, a second member, a second motor that drives the second member, the second motor having a higher load on the battery than the first motor, and a boosting unit that can boost the voltage of the battery and supply it to at least one of the first motor and the second motor. A photographing method using an imaging device, comprising: When the release button is pressed, energize the first motor, and determine whether the voltage V of the battery measured at this time 1 is lower than a predetermined threshold value. The voltage V 1 If it is determined that the voltage V is lower than the threshold value, do not perform photographing. The voltage V 1 If it is determined that the voltage V is higher than the threshold value, energize the second motor, and compare the voltage V measured at this time 2 with the voltage V 1 and If the voltage V 1 is higher than the voltage V 2 boost the voltage of the battery and supply it to the first motor and the second motor. If the voltage V 1 is lower than the voltage V 2 supply the voltage of the battery to the second motor. An imaging method.

5. The imaging method according to claim 4, wherein the first member is a shutter that controls an exposure time.

6. The imaging method according to claim 4 or 5, wherein the second member is one of a pair of rollers that convey a photographic film.

Images