JPH1062915A - Method for washing photographing lens of exposure unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for washing the photographing lens of an exposure unit by which soil adhering to the photographing lens is efficiently and surely removed. SOLUTION: The photographing lens 13 is held to turn upward in the exposure unit 30. A cleaning head 72 is constituted by implanting a brush 74 having flexibility at the lower edge of a supporting member 73. After a cleaning tape 71 is pushed down and pressed to the lens 13, it is driven by a motor 75 and repeats normal rotation and reverse rotation. When the head 72 is pressed to the lens 13, the leading edge 74a of the brush 74 is bent while profiling the surface shape of the lens 13 by pressure at this time, so that the tape 71 is brought into contact with all the surface of the lens 13. Therefore, all the surface of the lens 13 is uniformly rubbed by the tape 71, and the soil adhering to the surface is surely removed without being left after wiping. Since the lens 13 is washed in a state where it is still incorporated in the unit 30, the unit 30 need not be disassembled.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to a method for cleaning a photographic lens mounted on an exposure unit.

[0002]

2. Description of the Related Art A film unit with a lens is manufactured and sold by the present applicant so that photographers can easily enjoy photography at any time. The film unit with lens has a built-in photo film with a patrone in the unit body that incorporates a simple photographing mechanism, so you can take a picture immediately on purchase, and you can send it to a developing dealer after shooting. Because of its simplicity, it is widely used. Such a film unit with a lens may include a basic photographing mechanism such as “Sharp Run Super800” (trade name), or a “Film Run Flash” (trade name). There are various types, such as those equipped with a strobe device and capable of taking pictures at night or indoors, and the user can select one according to the application.

FIG. 9 shows an example of a film unit with a lens. The unit main body 11 is mainly formed of plastic, and is entirely covered with an exterior body 12.
The exterior body 12 is used to clean the appearance of the film unit with lens 10, and a paper box or the like having a printed surface is used. A required part of the exterior body 12 includes a photographing lens 13, a finder objective window 14, a strobe light emission window 15, a strobe charging switch 16, a shutter button 1
Holes for exposing 7, the winding knob 18, and the counter display window 19 are provided, so that the photographing operation can be performed while the exterior body 12 is kept on the unit main body 11.

As shown in FIG. 10, the unit main body 11 includes a main body base 21, and a front cover 22 and a rear cover 23 which cover the main body base 21 from front and rear. On both sides of the main body base 21, a patrone chamber 25 for storing a patrone 24 and a film roll chamber 27 for storing a photographic film 26 drawn out of the patrone 24 and rolled out are provided integrally. An aperture 28 for defining an exposure range of the photographic film 26 is formed therebetween. A winding knob 18 is attached to the upper surface of the patrone chamber 25. The front cover 22 has a viewfinder objective window 1
4, strobe light window 15, strobe charge switch 16,
A shutter button 17 and a counter display window 19 are formed, and a finder eyepiece window 29 is formed in the rear cover 23. An exposure unit 30 is mounted on a front surface of an aperture 28 of the main body base 21, and a strobe unit 40 is mounted between the exposure unit 30 and the film roll chamber 27. The exposure unit 30 is sandwiched between a front cover 22 and a rear cover 23.

The exposure unit 30 includes a shutter base 31
A shutter mechanism, a film unwinding mechanism, and a finder optical system are assembled on a unit to form a unit.
On a front surface of the shutter base 31, a shutter cover 32 holding the photographing lens 13 is put. On the upper surface of the shutter base 31, a finder objective lens 33a, a finder eyepiece 33b, and a film number display plate 34 are attached and fixed by a holding plate 35. A magnifying lens 36 for enlarging a number display portion formed on the upper surface of the film number display plate 34 is fitted in the holding plate 35. The strobe unit 40 is a unit formed by mounting a strobe circuit for controlling charging and discharging on a printed circuit board 41. The strobe light emitting section 42 for emitting strobe light is provided on the printed circuit board 41, and a strobe light for emitting strobe light is provided. Parts such as a main capacitor 43 for storing electric charges and a battery holder 45 for holding a battery 44 for power supply are attached.

When the exposure unit 30 and the strobe unit 40 are incorporated in the unit main body 11, the photographing lens 13 assembled to the exposure unit 30 is moved from the photographing opening 37 formed on the front surface of the front cover 22 to the finder objective lenses 33a and 33a. Each of the finder eyepiece 33b and the magnifying lens 36 is exposed from the finder objective window 14, the finder eyepiece window 29, and the counter display window 19. In addition, the strobe light emitting unit 42 assembled in the strobe unit 40 is exposed from the strobe light emission window 15.

On the other hand, in order to save resources and reduce industrial waste, recycling of a film unit with a lens has been actively promoted. When the user brings the used lens-fitted film unit to a developing store, the lens-fitted film unit is further collected at a development shop, where the photographic film is taken out and subjected to film development and print processing. The film unit with the lens from which the photo film is taken out is collected by the manufacturer, disassembled into parts, and reusable ones are supplied to the manufacturing process as they are. Unusable ones are used as raw materials. . In addition, a unit such as an exposure unit or a strobe unit is subjected to a function test to determine whether the unit can be reused.

However, the photographing lens and the strobe light emitting portion are always exposed outside the lens-fitted film unit, and those collected from the market are often stained with dust or fingerprints. Therefore, if the collected exposure unit or flash unit is used as it is, dirt adhering to the photographic lens or flash unit will not only impair the commercial value of the lens-equipped film unit, but also cause a decrease in optical performance and a shortage of flash light. , It becomes impossible to perform good photographing. Therefore, the exposure unit and the flash unit collected from the market are reused after cleaning the taking lens and the flash unit.

For cleaning the strobe light emitting portion, for example, a method described in Japanese Patent Application Laid-Open No. 6-175296 is used. This cleaning method is a method of wiping only an arbitrary surface of an object to be cleaned.After holding a strobe unit so that a strobe light emitting unit faces upward, a cleaning liquid is dropped or sprayed on the strobe light emitting unit, and a cleaning tape is applied. The wiping is performed by pressing against the strobe light emitting portion. According to this cleaning method, the cleaning can be efficiently performed while the strobe light emitting unit is still attached to the strobe unit.

[0010] Ultrasonic cleaning has conventionally been performed for cleaning a photographic lens. Ultrasonic cleaning is a method in which ultrasonic waves are radiated into a cleaning liquid immersed in an object to be cleaned and the liquid is stirred to remove contaminants on the surface of the object to be cleaned. In addition, there is an advantage that cleaning can be performed in a short time only by immersion in a cleaning liquid.

[0011]

However, in this ultrasonic cleaning, the object to be cleaned is completely immersed in the cleaning liquid. Therefore, in order to clean the taking lens, the exposure unit is disassembled and the taking lens is removed. Must-have. For this reason, in order to reuse the photographing lens, it is necessary to provide a step of disassembling the exposure unit and a step of cleaning the photographing lens separately from the function inspection step of the exposure unit, resulting in an increase in cost. .

Therefore, by using the above-described method of cleaning the strobe light-emitting portion, the photographing lens can be cleaned while being mounted on the exposure unit. Therefore, the cleaning of the photographing lens and the function inspection of the exposure unit are performed in the same process. Can be implemented continuously within However, in this cleaning method, since the cleaning tape pressed against the surface to be cleaned is swung horizontally to wipe the surface to be cleaned,
When trying to clean a curved imaging lens, wiping unevenness occurs, and effective cleaning cannot be expected.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to provide a method of cleaning a photographic lens of an exposure unit, which can efficiently and reliably remove dirt attached to a photographic lens. And

[0014]

In order to achieve the above object, a cleaning method according to the present invention comprises: a cleaning head having a shape following a lens surface by holding an exposure unit so that a lens surface of a taking lens faces upward; Then, the cleaning tape is pressed against the lens surface, and then either the cleaning head holding the cleaning tape or the exposure unit is rotated about the optical axis of the taking lens, and the lens surface and the cleaning tape are rotated. Rub together. It is preferable that the pressing portion of the cleaning head that presses the cleaning tape be given flexibility so that when pressed against the lens surface of the taking lens, the pressing portion elastically deforms following the lens surface.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 3 shows an outline of a step of cleaning a taking lens. The exposure unit 30 collected from the market and removed from the unit main body 11 is placed on a dedicated pallet 50 with the photographing lens 13 facing upward, and is step-feeded to the right by a transport belt 51 in the figure. . An air blow device 52 for removing dust adhering to the surface of the exposure unit 30, a cleaning liquid supply device 53 for applying a cleaning liquid to the photographing lens 13, and a photographing lens 13 near the conveyance belt 51. A pre-cleaning device 54 for rubbing the stains that have adhered to the surface, a cleaning solution removing device 55 for removing the cleaning solution remaining on the photographing lens 13, and a cleaning device 56 for removing the stains on the photographing lens 13 are arranged. ing. Then, while the exposure unit 30 passes through these devices 52 to 56,
The taking lens 13 is cleaned.

In the air blow device 52, clean air is injected at a high pressure. While the exposure unit 30 placed on the pallet 50 passes through the inside of the air blow device 52, dust adhering to the surface is blown away by clean air and removed.

FIG. 4 is an explanatory view schematically showing the structure of the cleaning liquid supply device 53. Above the taking lens 13 of the exposure unit 30 at the cleaning liquid supply position, a cleaning liquid ejector 57 that stores the cleaning liquid is disposed. The cleaning liquid ejector 57 is positioned so that the ejection port 57 a faces the taking lens 13, and is supported by the arm 58. A nozzle 59 is mounted above the cleaning liquid ejector 57 so that the cleaning liquid can always be supplied into the cleaning liquid ejector 57 via the nozzle 59. When the inside of the cleaning liquid injector 57 is pressurized, the cleaning liquid is injected into the injection port 57a.
It is then ejected toward the lens surface of the taking lens 13. Note that the cleaning liquid may be appropriately selected according to the material of the photographing lens 13 and the type of dirt. For example, a volatile alcohol such as methyl alcohol or ethyl alcohol may be used.

FIG. 5 is an explanatory view schematically showing the structure of the preliminary cleaning device 54. Exposure unit 3 at cleaning position
The cleaning head 6 is located above the taking lens
1 is arranged. The cleaning head 61 has a vertically extending brush 63 implanted at the lower end of a support member 62, and a vertically extending shaft 61 is driven by a motor 64.
It is rotated around a. This cleaning head 6
The motor 1 and the motor 64 are integrally attached to the holding unit 65, and are freely movable between a position where the tip of the brush 63 contacts the photographing lens 13 by the elevating cylinder 66 and a position where the brush 63 is retracted above the photographing lens 13. It is provided in. The brush 63 is preferably made of a soft material so as not to damage the lens surface of the photographing lens 13.

As shown in FIG. 6, the cleaning liquid removing device 55 has a nozzle 69 with the outlet 69a directed toward the taking lens 13 of the exposure unit 30 at the cleaning liquid removing position.
Is provided. Dry air is ejected from the nozzle 69 at a high pressure, and the cleaning liquid remaining on the photographing lens 13 is blown off and removed.

FIG. 2 is an explanatory view schematically showing the structure of the cleaning device 56. The cleaning tape 71 supplied from a tape roll (not shown) is pressed by the cleaning head 72 onto the photographing lens 13 of the exposure unit 30 at the cleaning position, and rubs the surface of the photographing lens 13. (Not shown). The cleaning head 72 has a flexible brush 74 implanted at the lower end of a support member 73, and alternately repeats normal rotation and reverse rotation about a shaft 72 a extending vertically by a motor 75. The cleaning head 72 and the motor 75 are integrally attached to a holding portion 76. The position at which the cleaning head 72 presses down the cleaning tape 71 by the lifting cylinder 77 (see FIG. 1) and the cleaning tape 71
Can be moved up and down between the position where it is retracted above.

A pair of tape clamps 78a and 78b are provided at positions facing each other with the cleaning head 72 therebetween. The tape clamp portions 78a and 78b are provided so as to be movable in the horizontal direction by cylinders 79a and 79b. When the cleaning head 72 is lowered and the cleaning tape 71 is pressed against the photographing lens 13, the tape clamp portions 78a and 78b are located upstream of the cleaning tape 71. The side and the downstream side are pressed against the wall surface of the motor 75 and fixed (see FIG. 1). Thus, even if the cleaning head 72 repeatedly rotates forward and backward, and the cleaning tape 71 and the photographing lens 13 are rubbed, the cleaning tape 71
From the cleaning head 72 is prevented. The reason why the rotation direction of the cleaning head 72 is switched in the middle is to prevent the cleaning tape 71 held around the cleaning head 72 from being twisted. Further, as the cleaning tape 71, it is preferable to use a tape made of ultra-fine and high-density fibers because it can adsorb and wipe off dust or oily fat in micro units, but of course, non-woven fabrics and general fibers can be used. May be used.

The lens-equipped film unit 10 collected from the developing station is sent to a disassembling process for reuse.
In this disassembly step, first, the exterior body 12 is peeled off from the unit main body 11, and thereafter the unit main body 11 is
Decomposed as shown in FIG. Then, the unit body 11
The exposure unit 30 removed from the photographing lens 13
Is placed on a dedicated pallet 50 with the sheet facing upward, and is conveyed by a conveying belt 51 toward an air blow device 52.

In the air blow device 52, clean air is injected at a high pressure, and the pallet 5 on which the exposure unit 30 is mounted is mounted.
When 0 passes through the air blow device 52, dust adhering to the surface of the exposure unit 30 is blown off and removed. Then, the exposure unit 30 from which dust is removed
Is transported toward the cleaning liquid supply device 53.

When the pallet 50 reaches the cleaning liquid supply position in the cleaning liquid supply device 53, the transport belt 51 stops.
Then, the cleaning liquid is ejected from the ejection port 57 a of the cleaning liquid ejector 57 toward the photographing lens 13, and the cleaning liquid adheres to the surface of the photographing lens 13. Thereafter, the transport belt 51 is operated, and the pallet 50 on which the exposure unit 30 on which the cleaning liquid has been supplied is placed is transported toward the preliminary cleaning device 54.

When the pallet 50 reaches the cleaning position in the pre-cleaning device 54, the transport belt 51 stops. The lifting cylinder 66 operates in conjunction with the stop of the transport belt 51, the cleaning head 61 descends, and the brush 63 comes into contact with the photographing lens 13. Thereafter, the cleaning head 61 is rotated by the drive of the motor 64, and the brush 63 rubs the dirt adhered to the surface of the photographing lens 13 to float. When the pre-cleaning for a predetermined time is performed, the motor 64 is stopped, and the cleaning head 61 is retracted upward by the elevating cylinder 66. Then, the transport belt 51 is operated, and the pallet 50 on which the exposure unit 30 having been subjected to the preliminary cleaning is placed is transported toward the cleaning liquid removing device 55.

When the pallet 50 reaches the cleaning liquid removing position in the cleaning liquid removing device 55, the transport belt 51 stops.
Then, dry air is ejected from the nozzle 69 toward the photographing lens 13, and the cleaning liquid remaining on the photographing lens 13 is blown off and removed. Thereafter, the transport belt 51 operates to transport the pallet 50 toward the cleaning device 56.

When the pallet 50 reaches the cleaning position in the cleaning device 56, the transport belt 51 stops. Conveyor belt 5
When 1 stops, the cleaning head 72 is lowered by the operation of the elevating cylinder 77, and the cleaning tape 71 is pushed down and pressed against the photographing lens 13. At this time, the cleaning head 72 pressing the cleaning tape 71
When the cleaning head 72 is pressed against the taking lens 13 as shown in FIG. 1, the lower end of the brush 74 is pressed by the pressure at this time so that the leading end 74 a of the brush 74 is brought into contact with the taking lens. 13, the surface of the cleaning tape 71 is brought into close contact with the entire surface of the taking lens 13.

When the cleaning tape 71 is
The tape clamps 78a and 78b are moved toward the motor 75 by the cylinders 79a and 79b, and the upstream and downstream sides of the cleaning tape 71 are pressed against the wall of the motor 75 and fixed. Thereafter, the cleaning head 72 repeats normal rotation and reverse rotation by driving the motor 75, and the cleaning tape 71
Rub the lens surface of No. 3 to remove dirt adhering to the surface. At this time, the cleaning tape 71 is
Is closely attached along the surface shape of the
Can be uniformly rubbed, and the dirt adhering to the surface is reliably removed.

When the photographing lens 13 is rubbed for a predetermined time, the motor 75 is stopped and the cleaning of the photographing lens 13 is completed. Thereafter, the cylinders 79a and 79b operate to release the fixing of the cleaning tape 71 by the tape clamp portions 78a and 78b. The cleaning head 72 is retracted upward by the operation of the lifting cylinder 77. Then, the cleaning tape 71 is fed by a predetermined length in the direction of the arrow in FIG. 2, and a new portion of the cleaning tape 71 is positioned below the cleaning head 72 to prepare for the next cleaning.

The exposure unit 30 in which the cleaning of the taking lens 13 is completed is transferred to a function inspection step, and it is determined whether or not the exposure unit 30 can be reused. Then, the exposure unit 30 determined to be reusable is supplied to an assembling process of the film unit with lens 10, and is incorporated as a part of the component as it is.

In the above-described embodiment, an example has been described in which the pressing portion of the cleaning head that presses the cleaning tape against the photographing lens is configured by a flexible brush. It is only necessary to deform according to the pressure of the lens when pressed against the lens. For example, a hard sponge or a soft rubber may be used.

In the present invention, it is sufficient that the cleaning tape can be brought into close contact with the entire surface of the taking lens.
For example, as in the case of a cleaning head 80 shown in FIG. 7, the shape of the pressing portion 80a may be configured to follow the shape of the photographing lens 13 in advance. In this case, the cleaning head 80 is preferably made of an elastic material such as rubber so as not to damage the cleaning tape 71 and the lens surface of the taking lens 13.

In the above-described embodiment, the cleaning head holding the cleaning tape is rotated so that the photographic lens is rubbed with the cleaning tape. The lens may be rubbed against a cleaning tape. According to this embodiment, since the cleaning tape remains fixed at a predetermined position, it is necessary to switch the rotation direction of the cleaning head halfway to prevent the cleaning tape from being twisted, as in the above embodiment. Disappears. Therefore, a motor having a simple structure can be used to rotate the exposure unit, and cost can be reduced.

Further, in the above-described embodiment, the method of spraying and attaching the cleaning liquid toward the photographing lens has been described. However, for example, a cleaning liquid supply device 81 shown in FIG. 8 may be used. The cleaning liquid supply device 81 includes a cleaning liquid supply table 82 and a cleaning liquid supply device 83. The cleaning liquid replenishing table 82 is provided with a water absorbing body 85 placed in a container 84 and injecting the cleaning liquid. The cleaning liquid replenishing table 82 is held on a pallet 50 and arranged with the exposure unit 30 at the cleaning liquid supply position. It is arranged so that the position is substantially the same height as the taking lens 13 of the exposure unit 30. As the water-absorbing body 85, a substance having excellent water-absorbing properties, such as sponge or felt, is used, so that the water-absorbing body 85 sucks and holds the cleaning liquid up to its upper surface. The cleaning liquid dispenser 83 has a water retaining body 87 attached to a lower end of a vertically extending support member 86, and is horizontally movable between above the photographing lens 13 and above the water absorbing body 85. The water retaining body 87 is vertically movable between a position where the lower surface of the water retaining body 87 is lowered to a height at which it contacts the photographing lens 13 or the water absorbing body 85 and a position retracted upward. Note that as the water retaining body 87, a substance capable of retaining a small amount of liquid on the surface, for example, a nonwoven fabric, sponge, felt, or the like may be used.

In the cleaning liquid supply device 81, the water retaining body 87
Is pressed against the water absorbing body 85 to supply the cleaning liquid to the water retaining body 87. When the water retaining body 87 holding the cleaning liquid is pressed against the photographing lens 13, the cleaning liquid is transferred to the photographing lens 13. According to this embodiment, the cleaning liquid can be uniformly attached to the entire lens surface as compared with a method of dropping the cleaning liquid onto the lens surface of the spherical imaging lens 13 from above.

In the above embodiment, a cleaning solution containing a chemical is used, but water may be used instead of the cleaning solution. As the washing water, any of tap water, distilled water, filtered water and the like may be used. Alternatively, cooling air may be blown onto the lens surface of the taking lens to cause dew condensation of atmospheric moisture. In this case, in order to prevent water vapor or cooling air from being blown to parts other than the photographing lens, for example, a mask plate having an opening for exposing the photographing lens may be covered on the exposure unit. According to the method using these cleaning waters, cleaning can be performed at a lower cost as compared with the case of using a cleaning solution containing a chemical agent.

Further, in the above-described embodiment, the dirt on the photographing lens is wiped off with the cleaning tape after the cleaning liquid after the preliminary cleaning is removed. However, the cleaning tape may be wiped with the cleaning liquid remaining. In addition, a high cleaning effect can be expected even if the lens surface is merely rubbed with a cleaning tape without performing preliminary cleaning of the taking lens. In this case, it is possible to rub the lens surface in a dry state without using a cleaning liquid.

Although the photographic lens is cleaned with the photographic lens attached to the exposure unit, the cleaning method of the present invention can be applied to a photographic lens as a single component. Therefore, not only a product collected from the market but also a photographing lens which is newly incorporated in a film unit with a lens can be easily cleaned.
Further, the cleaning method of the present invention is not limited to cleaning of a photographing lens, and for example, cleaning of a part whose outer periphery is surrounded by a convex guide, such as a magnifying lens 36 provided on the upper surface of the exposure unit 30. Also suitable for. Of course, the present invention can be applied to cleaning of a flat surface such as the strobe light emitting section 42, the finder objective lens 33a, and the finder eyepiece 33b.

[0039]

As described above, according to the cleaning method of the present invention, the cleaning tape is pressed against the lens surface by the cleaning head having a shape following the lens surface of the photographing lens. Close contact with the entire surface of the taking lens. Then, while the cleaning tape is in close contact with the entire surface of the taking lens, one of the cleaning head holding the cleaning tape and the exposure unit is rotated about the optical axis of the taking lens to rotate the taking lens and the cleaning tape. By rubbing with each other, dirt attached to the surface of the taking lens can be uniformly scraped off over the entire lens surface. In addition, since the cleaning method of the present invention is a method of rubbing only an arbitrary surface of the object to be cleaned, it is possible to clean the photographic lens with the photographic lens attached to the exposure unit. Can be continuously performed in the same process.

Also, by giving flexibility to the pressing portion of the cleaning head that presses the cleaning tape, the pressing surface is elastically deformed following the photographic lens by the pressure when pressed against the photographic lens. It is possible to correspond to a photographing lens having a rough surface shape, and it is possible to perform cleaning more economically.

[Brief description of the drawings]

FIG. 1 is an explanatory view of a main part of a cleaning apparatus embodying the present invention.

FIG. 2 is a schematic diagram illustrating a configuration of a cleaning apparatus embodying the present invention.

FIG. 3 is an explanatory diagram illustrating an outline of a cleaning process of a photographing lens.

FIG. 4 is a schematic diagram showing a configuration of a cleaning liquid supply device.

FIG. 5 is a schematic diagram showing a configuration of a pre-cleaning device.

FIG. 6 is a schematic diagram illustrating a configuration of a cleaning liquid removing device.

FIG. 7 is a schematic view showing another example of the configuration of the cleaning head.

FIG. 8 is a schematic diagram showing another configuration example of the cleaning liquid supply device.

FIG. 9 is an external perspective view of a film unit with a lens.

FIG. 10 is an exploded perspective view of the unit main body shown in FIG.

[Explanation of symbols]

 Reference Signs List 10 Film unit with lens 11 Unit body 13 Photographing lens 30 Exposure unit 50 Pallet 56 Cleaning device 71 Cleaning tape 61, 72, 80 Cleaning head 62, 73 Support member 63, 74 Brush 64, 75 Motor 78a, 78b Tape clamp portion

Claims (2)

[Claims] 1. A method for cleaning a photographic lens of an exposure unit in which a photographic lens, a shutter mechanism, a film wrapping mechanism, and a finder optical system are integrally assembled on a base unit, wherein the lens surface of the photographic lens faces upward. Holding the exposure unit so that the cleaning head is pressed against the lens surface by a cleaning head shaped like the lens surface, and then either the cleaning head holding the cleaning tape or the exposure unit is held. A method of cleaning a photographic lens of an exposure unit, wherein the photographic lens is rotated about an optical axis of the photographic lens to rub the lens surface against a cleaning tape. 2. The cleaning head according to claim 1, wherein the pressing portion for pressing the cleaning tape has flexibility, and the pressing portion is elastically deformed following the lens surface when pressed against the lens surface of the taking lens. 2. The method according to claim 1, wherein the photographing lens of the exposure unit is cleaned.