JP3206333B2 - Photo printing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a photographic printing apparatus provided with a stain removing means for removing stains on a negative film with a magnetic recording portion.

[0002]

2. Description of the Related Art A photographic printing apparatus of this type is provided with a dirt removing means constituted by an adhesive roller, a magnetic head and an exposure section along a transport path for transporting a negative film, and transports the film along the transport path. After the stain on the negative film is removed, the magnetic information is accurately read by the magnetic head.

However, the conventional photographic printing apparatus is configured to always operate the stain removing means during the transport of the negative film to continuously remove the stain on the negative film. Therefore, the adhesive force on the surface of the adhesive roller is reduced early due to the adhesion of dust and the like, and there is a problem that the frequency of cleaning the adhesive roller with water or the like becomes extremely high. There was a problem that durability was reduced.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to provide a means for removing dirt when a magnetic head causes a reading error due to dirt on a negative film. An object of the present invention is to provide a photographic printing apparatus capable of operating the printer.

[0005]

A photographic printing apparatus according to the present invention has a transport path between a loading side and a loading side of a negative film on which a magnetic recording section is recorded for each frame, and reads magnetic recording. In a photographic printing apparatus in which a magnetic head and a stain removing means for removing stains on a negative film are arranged along a transport path, a transport means for sequentially feeding and reversing a negative film along a transport path, and Magnetic recording reading of predetermined frame of negative film that is fed forward is performed normally.
If not , detect the reading error and read
Stops the transport operation of the negative film when an error is backward toward the removal means dirt coma generated, and the frames read error has occurred is backward until stain removal means takes
And, thereafter, a conveyance control means for controlling the conveying means so as to forward the negative film, further comprising a stain removal control means for actuating the soil removal means with respect to the reverse feed has been co Ma until stain removal means It is a feature.

[0006]

According to the photographic printing apparatus of the present invention, a negative film on which a magnetic recording section is recorded for each frame is transported to a magnetic head to read magnetic recording. If abnormal reading is performed due to contamination of the negative film, the error is checked by the transport control means, and the dirty negative film is removed by the transport means controlled by the transport control means. Reverse feed to the position of the means.

When the dirty frame is sent back to the stain removing means, the stain removing means is operated by the stain removing control means to remove the stain on the frame.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A photographic printing apparatus is provided with a transport path 3 for transporting a negative film 1 on which a magnetic recording section is recorded for each frame by a transport means 2 between a loading side and an unloading side. A dirt removing means 4, a sensor 5, a magnetic head 6 serving as information data reading means, and an exposure unit (not shown) are provided along 3, and these are disposed from the carry-in side to the carry-out side. , A magnetic head 6 and an exposure unit (not shown) in this order (FIGS. 1 and 2). Further, the photo printing apparatus includes a transport control unit (CPU) 7 for controlling the transport operation of the transport unit 2 and a stain removal control unit 8 for controlling the stain removal operation of the stain removal unit 4.

A set portion (not shown) for a film cartridge (not shown) and a film winding portion (not shown) are provided at both ends of the transport path 3.

On the other hand, a magnetic recording portion (not shown) of the negative film 1 is formed on each side of the negative film 1 for each frame.
Each magnetic recording unit records the date and time of shooting of each frame. A perforation 1a is formed on the side of the negative film 1.

Conveying roller pair 2a constituting conveying means 2
Is for reciprocating the negative film 1 along the transport path 3 while sandwiching the negative film 1, and is disposed near the stain removing means 4. The transport roller pair 2a is driven by a motor 2b,
Pulley 2 attached to roller shaft 2c of transport roller 2a
d and a pulley 2f attached to the drive shaft 2e of the motor 2b.
And a belt 2g is stretched between the
The forward rotation of the negative film 1 is directed toward the magnetic head 6, and the reverse rotation of the motor 2b reversely feeds the negative film 1 toward the dirt removing means 4.

The transport means 2 is configured to intermittently feed the negative film 1 to the exposure section one frame at a time during forward feeding, and to continuously feed the negative film 2 at a constant speed in the unloading direction during reverse feeding. I have.

The magnetic head 6 has an auxiliary function of reading information from a magnetic recording portion of the negative film 1 to perform printing and scanning. A position facing the magnetic head 6 is moved in the direction of the magnetic head 6 by a spring 6a. Movable body 6 to be energized
The negative film 1 is pressed against the magnetic head 6 by the movable body 6b. This magnetic head 6
Is connected to the transport control means 7.

The sensor 5 reads the number of perforations 1a of the negative film 1. The sensor 5 is disposed between the magnetic head 6 and the dirt removing means 4. The sensor 5 is connected to the transport control means 7. ing.

The transport control means 7 includes a motor 2b of the transport means 2.
When a reading error occurs due to dirt on the negative film 1 which is sequentially fed toward the magnetic head 5, the reading error is detected and the frame of the dirt negative film 1 is removed. The transport operation of the negative film 1 is stopped when the dirty frame is transported backward to the dirt removing means 4.

If impurities such as dust adhere to the negative film 1 and the information reading by the magnetic head 6 is not performed normally, an error check is performed by the transport control means 7 based on the read signal of the magnetic head 6. Is performed, the motor 2b is reversed, and the negative film 1 is reversely fed by a fixed amount (for example, one frame of the negative film 1), and the frame with the magnetic recording portion having an error is removed by the adhesive roller 3b of the dirt removing means 3. (The adhesive roller 3b will be described later.)

At this time, the number of perforations 1a of the negative film 1 is read by the sensor 5 to confirm whether the negative film 1 has been fed backward to this position.

The dirt removing means 4 has an adhesive roller 4a having an adhesive surface for removing dirt on the outer peripheral surface, and a free roller 4b opposed to the adhesive roller 4a. Reference numeral 4c denotes a link which is pivotally supported on one side of the transport path 3 so as to be vertically swingable. A roller shaft 4d of an adhesive roller 4a is rotatably attached to the link 4c.

When the link 4c swings upward,
When the negative film 1 is sandwiched between the adhesive roller 4a and the free roller 3b and the link 4c swings downward, the adhesive roller 4a moves downward to release the negative film 1.

The dirt removing means 4 constructed as described above.
Is controlled by the dirt removal control means 8. The dirt removal control means 8 is constituted by a solenoid 8a.
When the drive circuit of the solenoid 8a is on, the tip of the link 8b of the solenoid 8a pushes the roller shaft 4d of the adhesive roller 4a, thereby swinging the adhesive roller 4a upward and negatively applying the adhesive surface of the adhesive roller 4a. The film 1 is pressed against a dirty frame of the film 1. Note that the solenoid 8a is connected to the transport control means 7.

When the frame of the stained negative film 1 is slightly fed back to the side closer to the loading side than the adhesive roller 4a of the stain removing means 4, the control of the transport control means 7 transmitted by the signal of the sensor 5 is performed. The transporting operation of the negative film 1 by the transporting means 2 is stopped based on the signal, and the drive circuit of the solenoid 8a is turned on, so that the adhesive surface of the adhesive roller 4a is pressed against the dirty frame of the negative film 1.

When the adhesive surface of the adhesive roller 4a is pressed against the negative film 1, the transport means 2 is operated based on the control signal of the transport control means 7 to feed the negative film 1 in order. As a result, the erroneous information portion is cleaned by the adhesive roller 4a and sent to the magnetic head 1 again.
Thereafter, the link 8b of the solenoid 8a returns to its original state based on the control signal of the transport control means 7, and the pressure-bonded state of the adhesive roller 4a to the negative film 1 is released.

[0023]

According to the photographic printing apparatus of the present invention, the transport control means detects an abnormal reading signal of the magnetic head and reversely feeds the frame of the negative film to the position of the dirt removing means. Since the stain removing means is operated by the means to remove the stain on the frame, the stain removing means can be operated only when abnormal reading is performed on the magnetic head. As a result, the frequency of cleaning the dirt removing means can be reduced, and the durability of the dirt removing means can be improved.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of a photographic printing apparatus according to the present invention.

FIG. 2 is a plan view of the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Negative film 2 Conveying means 3 Conveying path 4 Dirt removing means 6 Magnetic head 7 Transport controlling means 8 Dirt removing controlling means

Claims (1)

(57) [Claims] 1. A magnetic head for reading magnetic recording and a dirt remover for removing dirt from a negative film having a transport path between a carry-in side and a carry-out side of a negative film on which a magnetic recording section is recorded for each frame. Means for arranging the negative film along the transport path, the transport means for sequentially feeding and reversing the negative film along the transport path ;
When the magnetic recording reading of the frame is not performed normally
To, detects the reading error, a read error is issued
The produced frames are sent back to the stain removal means and read.
Frames taken error stops conveying operation of the negative film upon being backward until stain removal means, then, Ne
And conveyance control means for controlling the conveying means so as to forward the Gafirumu, photographic printing, characterized in that a dirt removal control means for actuating the soil removal means with respect to the reverse feed has been co Ma until stain removal means apparatus.