JPH11202419A - Image recording device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the image recording device which can make sheets of a photosensitive material uniform in length without any increase in the cost. SOLUTION: This image recording device uses a rolled photosensitive material A by cutting it into sheets of specific length. In this case, a sensor detects a reference position marked on the circumference of one of a couple of conveyor rollers 40 and 42 and variance in the feed quantity of the photosensitive material due to the eccentricity of one roller is corrected on the basis of the number of driving pulses for the conveyor roller couple by a pulse motor form the reference position and eccentricity data on the rollers stored in a storage device.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to an image recording apparatus for exposing a photosensitive material.

[0002]

2. Description of the Related Art Conventionally, for example, photographic film (hereinafter, referred to as photographic film)
Printing of an image photographed on a photosensitive material or the like onto a photosensitive material has been performed by direct exposure in which the image of the film is projected onto the photosensitive material and the photosensitive material is surface-exposed. On the other hand, at present, for example, an image recording apparatus using digital exposure, which photoelectrically reads image information captured on a film, converts this into digital data, performs various image processings, and then exposes a photosensitive material, has been developed. 2. Related Art Digital photo printers have been put to practical use.

The above-described digital photo printer basically controls a scanner for reading image data recorded on an original such as a transmissive original or a reflective original, and controls and manages the entire apparatus. An input device having a control device for performing processing, a printer (image recording device) for digitally exposing the photosensitive material in accordance with image data after image processing, a processor (developing machine) for developing the exposed photosensitive material, and the like. An output machine is provided.

In an input device, first, in the case of reading image data photographed on a film by a scanner, for example, a reading light emitted from a light source is incident on the film, and a projection carrying an image photographed on the film is carried out. The light is imaged on an image sensor such as a CCD sensor by an imaging lens, the image is photoelectrically converted by the image sensor, the image is read, and various image processing is performed as necessary.
It is supplied to the control device as input image data corresponding to an image photographed on the film.

Then, in the control device, while the entire device is controlled in accordance with the instruction of the operator, the input image data supplied from the scanner is converted into digital data, or the image data previously converted into digital data is controlled by the control device. After being supplied to the printer, various image processing conditions are set according to the image data, various image processing is performed on the image data, exposure conditions are determined, and the image data is transferred to the printer of the output device as output image data. You.

On the other hand, in an output device, in a printer, for example, if the apparatus uses light beam scanning exposure, the light beam is modulated in accordance with image data transferred from a control device, and the light beam is modulated in the main scanning direction. While being deflected, the photosensitive material is transported in a sub-scanning direction substantially orthogonal to the main scanning direction,
After the photosensitive material is two-dimensionally scanned and exposed to record a latent image, the processor is subjected to a development process in accordance with the photosensitive material, so that an image photographed on a film is reproduced as a finished print.

In an image recording apparatus using digital exposure, color density correction is performed by image processing, and exposure conditions are determined. Therefore, the time required for exposure per image is short, and the exposure time is small. , It is possible to perform quick exposure as compared with the conventional direct exposure. In addition, editing such as image synthesis and image division, and image processing such as color / density adjustment can be freely performed, and a finished print that has been freely edited and subjected to image processing can be output according to the intended use.

In addition, since the image information of the finished print can be stored in a recording medium such as a magneto-optical disk, it is not necessary to re-read the film or determine the exposure conditions again, and the work such as reprinting can be performed quickly and Easy.
Further, although it has been difficult to print by conventional direct exposure, an image recording apparatus using digital exposure almost completely converts image information recorded on a film or the like in terms of resolution, color / density reproducibility, and the like. There are advantages such as the ability to output reproduced prints.

In a conventional image recording apparatus, when a long photosensitive material wound into a roll is cut into a sheet and used, the length of the photosensitive material is adjusted according to the eccentricity of a pair of conveying rollers for conveying the photosensitive material. There is a problem that the feeding amount of the photosensitive material varies and the sheet length of the photosensitive material varies. The eccentricity of the conveying roller pair always exists in terms of the processing accuracy of the roller. On the other hand, if the processing accuracy of the conveying roller pair is to be improved, for example, there is a problem that the cost becomes extremely high. Occur.

Hereinafter, referring to the graph shown in FIG.
The variation in the feed amount of the photosensitive material according to the eccentricity of the transport roller pair will be described.

FIG. 4 is a graph showing an example of the relationship between the rotation amount of the roller and the feed amount of the photosensitive material. In the graph of the illustrated example, the horizontal axis indicates the rotation amount of the roller, and the vertical axis indicates the feed amount of the photosensitive material. As shown in the graph, the ideal value is indicated by a dotted line, and when the roller is not eccentric, the feeding amount of the photosensitive material is proportional to the rotation amount of the roller. However, since the actual roller always has eccentricity, the feed amount of the photosensitive material varies in one rotation cycle of the roller as shown by the solid line in the graph.

When the length of the roll-shaped photosensitive material is cut into a sheet, after cutting at point A, if it is just point A that the photosensitive material is subsequently cut, the sheet length of the photosensitive material Is uniformly the same sheet length, and no problem occurs. On the other hand, if the sheet is cut at the point B, the photosensitive material is conveyed excessively and the sheet length of the photosensitive material becomes longer. In the case of cutting, the sheet length of the photosensitive material becomes short because the feeding amount of the photosensitive material is insufficient.

For example, ± 0.2 for a roller having a diameter of 20 mm.
point A, point B and point C, respectively, when there is a diameter variation of mm
The error AE, the error BE and the error CE of the feed amount of the photosensitive material at the time are shown by the following equations.

[0014]

(Equation 1)

Further, for example, when the photosensitive material is cut at point A first and then cut continuously in the order of point A, point B, and point C, the feed amount of the photosensitive material and the error of the feed amount are determined. It is shown in the table below.

[0016]

As shown in the above equation and table, it can be seen that the variation in the diameter of the roller directly appears as an error in the feed amount of the photosensitive material. As described above, in the conventional image recording apparatus, since there is always eccentricity in the transport roller that transports the photosensitive material, when the long photosensitive material wound into a roll is cut into a sheet and used. In addition, there has been a problem that the feeding amount of the photosensitive material by the pair of conveying rollers varies, and the sheet length of the photosensitive material varies.

[0018]

SUMMARY OF THE INVENTION An object of the present invention is to reduce the cost by correcting the variation in the feed amount of the photosensitive material due to the eccentricity of the pair of transport rollers in view of the problems based on the prior art. An object of the present invention is to provide an image recording apparatus capable of uniformly adjusting the sheet length of a photosensitive material without inviting the same.

[0019]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention relates to an image recording apparatus which cuts a roll-shaped photosensitive material into a sheet of a predetermined length and uses the same. A pair of conveying rollers for nipping and conveying the photosensitive material, a pulse motor for driving the pair of conveying rollers, a sensor for detecting the reference position, and one of the pair of conveying rollers. A storage device for storing the eccentricity data of the rollers, and the number of drive pulses of the transport roller pair by the pulse motor from the reference position detected by the sensor and the eccentricity data stored in the storage device. A correction device for correcting a variation in the feed amount of the photosensitive material due to the eccentricity of one of the rollers of the transport roller pair. It is to provide a location.

The present invention also relates to an image recording apparatus which cuts and uses a roll-shaped photosensitive material into a sheet of a predetermined length, and comprises a pair of conveying rollers for nipping and conveying the photosensitive material, and a pair of conveying rollers. A pulse motor for pulse driving, a displacement meter for measuring a radius of one roller of the transport roller pair, and a driving pulse number of the transport roller pair by the pulse motor and a radius measured by the displacement meter, A second aspect of the present invention is to provide an image recording apparatus according to a second aspect, further comprising: a correction device configured to correct a variation in a feed amount of the photosensitive material due to an eccentricity of one of a pair of conveying rollers.

Here, the other roller of the pair of conveying rollers has a notch, and the displacement meter is a contact point between the photosensitive material and the pair of conveying rollers through the notch of the other roller. It is preferable to measure the radius of the one roller including the thickness of the photosensitive material at the feed point position.

One of the rollers of the pair of transport rollers is longer in the axial direction than the other roller, and the displacement meter corresponds to a feed point position which is a contact point between the photosensitive material and the pair of transport rollers. Preferably, the radius of the end of the one roller is measured.

It is preferable that the displacement meter measures a radius of the one roller at a position shifted by a predetermined angle with respect to a feed point position which is a contact point between the photosensitive material and the transport roller pair.

[0024]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an image recording apparatus according to the present invention will be described in detail based on preferred embodiments shown in the accompanying drawings.

FIG. 1 is a schematic view of an embodiment of the image recording apparatus of the present invention. Image recording apparatus (printer) 1 shown in FIG.
0: Cut the long photosensitive material A into a predetermined length according to the finished print to be made into a cut sheet, record back print information and perform digital exposure (printing), and expose the exposed photosensitive material A. To the processor 20, and basically includes a photosensitive material supply unit 12, a back printing unit 14, an image recording unit 16, a distribution unit 18, and the like.

The image recording apparatus 10 conveys the photosensitive material A from the photosensitive material supply section 12 to the image recording section 16,
A plurality of pairs of conveying rollers are arranged as conveying means for conveying the exposed photosensitive material A to the processor 20, and a conveying guide for the photosensitive material A, various sensors, and the like are arranged as necessary. The transporting means for the photosensitive material A is not particularly limited, and any known transporting method of the sheet material such as a lift transport using a belt conveyor, a nip belt, suction or the like can be used in addition to the transport roller pair.

In the image recording apparatus 10, the photosensitive material supply section 12 has loading sections 22 and 24, a magazine 34, cutters 30 and 32, and the like. Loading parts 22 and 24
Is a portion where the magazine 34 containing the photosensitive material A is loaded. The loading units 22 and 24 each include a magazine 34 in which photosensitive materials A of different types such as sizes (widths), surface types (silk or mat), specifications (thickness, base type, etc.) are stored. Will be loaded.

The magazine 34 is a light-shielding housing containing a long photosensitive material A wound with the recording surface (emulsion surface) outside. In the illustrated example, the pull-out roller pair 26
And 28 are provided inside the magazine 34. For example, the upper drive roller in the drawing is
By being loaded into the predetermined positions 2 and 24, they are engaged with the drive sources (not shown) of the pull-out roller pairs 26 and 28 which are respectively arranged in the loading sections 22 and 24.

Although the illustrated image recording apparatus 10 is capable of loading two magazines 34, the present invention is not limited to this, and the number of magazines that can be loaded may be one, or Alternatively, three or more magazines may be loaded. In the illustrated image recording apparatus 10, the loading unit 2
Although cutters 30 and 32 are provided corresponding to each of 2 and 24, a configuration in which the photosensitive material A supplied from both loading units 22 and 24 is selectively cut by one cutter may be adopted.

In the photosensitive material supply section 12, the photosensitive material A is pulled out of the magazine 34 by the pull-out roller pairs 26 and 28, and the photosensitive material A is conveyed by the conveying means.
Back printing unit 1 on the downstream side (hereinafter referred to as downstream side) in the transport direction of
4 is carried. This conveyance is stopped when the photosensitive material A conveyed downstream reaches the length of the finished print, and the photosensitive material A is supplied to the cutters 30 and 32 disposed between the magazine 34 and the back printing unit 14. To make a cut sheet.

FIG. 2 is a conceptual diagram showing an embodiment of a drive system for the pair of conveying rollers. (A) and (b) of FIG.
3 shows an example of a drive system of a pair of conveying rollers for correcting a variation in the amount of feeding of the photosensitive material A due to the eccentricity of the pair of conveying rollers and making the sheet length of the photosensitive material A uniform. In the present invention, the eccentricity of the conveying roller pair means a variation in the radius of the roller from the center point of the cross section perpendicular to the rotation axis of the roller to its circumferential surface.

FIG. 1A shows a drive system for a pair of conveying rollers according to the image recording apparatus of the first embodiment of the present invention. Basically, a reference position 70 is located on the circumference of one of the rollers. A marked conveying roller pair 68, a pulse motor 64 for pulse-driving the conveying roller pair 68, a sensor 58 for detecting a reference position 70, a storage device 66 for storing eccentricity data of one of the conveying roller pairs 68, There is provided a correction device 62 for correcting variations in the feed amount of the photosensitive material A due to the eccentricity of one of the transport rollers 68.

In the illustrated driving system for the conveying roller pair,
Immediately after the power of the image recording apparatus 10 is turned on, first, the conveyance roller pair 68 makes one rotation, and the sensor 58 detects a reference position 70 marked on the circumference of the lower roller (for example, a driving roller) in the figure. You. Here, the transport roller pair 68
Is always holding the photosensitive material A, after the reference position 70 is detected, the conveying roller pair 68 is rotated once in the reverse direction, and the photosensitive material A is rewound. In addition, when not always pinching, rewinding is unnecessary.

When the photosensitive material A is conveyed after the detection of the reference position 70 by the sensor 58, the pulse motor 64
Are always counted. As described above, by counting the number of pulses from the reference position 70 given to the pulse motor 64, the correcting device 62 determines the bias of the roller based on the eccentricity data of the roller stored in the storage device 66. Variations in the feed amount of the photosensitive material A related to the core are corrected, and the pulse motor 64 is thereby controlled.

That is, since the rotation angle of the roller can be determined by counting the number of pulses applied to the pulse motor 64 from the reference position 70, the photosensitive material is determined based on the eccentricity data of the roller stored in the storage device 66. A
Can be accurately calculated.
Therefore, for example, when the feeding amount of the photosensitive material A is short by 0.4 mm, the number of pulses for feeding the photosensitive material A by an extra 0.4 mm is calculated, and the pulse motor 64 is driven.

On the other hand, FIG. 2B shows a drive system of a pair of conveying rollers according to the image recording apparatus of the second embodiment of the present invention. Transport roller pair 68, a pulse motor 64 for pulse-driving the transport roller pair 68, a displacement meter 60 for measuring the radius of one of the transport roller pairs 68, and a photosensitive drum related to the eccentricity of one of the transport roller pairs 68. It has a correction device 62 for correcting variations in the feed amount of the material A.

In the drive system of the transport roller pair, the number of pulses given to the pulse motor 64 when the photosensitive material A is transported when the photosensitive material A is transported while the radius of one of the transport roller pairs 68 is directly measured by the displacement meter 60. Is always counted. In the correcting device 62, the variation in the feed amount of the photosensitive material A due to the eccentricity of the roller is corrected based on the number of pulses given to the pulse motor 64 and the radius measured by the displacement meter 60.
4 is controlled.

That is, the number of pulses applied to the pulse motor 64 corresponds to the rotation angle θ of the roller and can be regarded as the same. Therefore, by measuring the radius r of the roller, the photosensitive material A can be obtained by using the following equation. Can be accurately calculated. Therefore, if the feed amount is insufficient,
The required number of pulses is calculated and the pulse motor 64 is driven. If the feed amount is too large, the pulse motor 64 is stopped when the appropriate feed amount is reached.

[0039]

(Equation 2)

FIG. 3 shows a method of measuring the radius of the roller. The schematic diagram shown in FIG. 6 shows a method of measuring the radius of the roller by the displacement meter 60 in the drive system of the pair of transport rollers shown in FIG.

First, FIG. 11A shows that the upper roller of the conveying roller pair 68 in the drawing has a notch at the center,
The displacement meter 60 irradiates the central portion of the lower roller with laser light through the cutout portion of the upper roller from above,
This is a method of measuring the radius of the lower roller. This method can measure the radius of the lower roller at the feeding point (the contact point between the photosensitive material A and the roller) including the thickness of the photosensitive material A, so that this method has the best measurement accuracy. .

In this method, since the laser beam is applied to the surface of the photosensitive material A, the intensity of the laser beam is appropriately adjusted, and the laser beam is applied to the back surface (non-emulsion surface) of the photosensitive material A. Is preferred. The position of the notch is not limited to the center of the upper roller. Also,
The displacement meter 60 is not limited to the laser described above, and any conventionally known various devices such as a device using a light emitting diode (LED) or an ultrasonic wave can be used.

FIG. 3B focuses on the fact that the eccentricity of the rollers of the pair of conveying rollers 68 is small in the axial direction of the rollers. In this method, the roller is made longer than the upper roller, and the end of the lower roller is irradiated with laser light from above by the displacement gauge 60 to measure the radius of the lower roller. According to this method, a radius equivalent to the feed point of the photosensitive material A can be measured at the angle point of the measurement position.

Finally, FIG. 3 (c) shows that the radius of the roller is measured at a position closer to the feed point because the feed material of the photosensitive material A always has the photosensitive material A. According to 60, a laser beam is applied to the center of the lower roller of the conveying roller pair 68 in parallel with the photosensitive material A from the near side in the figure to measure the radius of the lower roller. In this method, the angle of the measurement position is shifted by 90 ° with respect to the feed point of the photosensitive material A, but this angle shift can be easily corrected.

The irradiation of the laser beam is not limited to an angle of 90 ° with respect to the position of the feed point, and the irradiation position is not limited to the center of the lower roller. According to the image recording apparatus 10 of the present invention, by providing a drive system for any of the transport roller pairs shown in FIG.
Variations in the feed amount of the photosensitive material due to the eccentricity of the transport roller pair can be corrected without increasing the cost, and the sheet length of the photosensitive material A can be made uniform.

Subsequently, on the downstream side of the photosensitive material supply section 12, a back printing section 14 is arranged in the illustrated example. The back printing unit 14 includes a photographing date, print printing date, frame number, film ID number, camera ID number used for photographing, a digital photo printer The back print information (back print), which is various information such as an ID number, is recorded. The back print unit 14 records the back print information on the photosensitive material A as a cut sheet.

The back printing unit 14 is not particularly limited. For example, a non-contact recording method such as an ink jet printer such as a dot impact printer, a thermal transfer printer, and an ink jet printer can be suitably used. An ink jet printer using a hot-melt ink that is solid at room temperature is preferably exemplified. In addition, back printing section 1
4 is a new standard new photo system (Advanced Photo System)
It is preferable that two or more lines can be printed in correspondence with m).

In the illustrated example, the back print information is recorded after the photosensitive material A is cut. However, the present invention is not limited to this. The back print information is recorded before the cutter 30 and 32 cut the photosensitive material A. It may be recorded after the cutting or before and after the cutting. Further, although the back print information is recorded before the exposure, the invention is not limited to this. The back print unit 14 may be arranged downstream of the exposure position to record the back print information after the exposure.

The image recording unit 1 is located downstream of the back printing unit 14.
6 are arranged. The image recording unit 16 scans and exposes the photosensitive material A in a main scanning direction (a direction perpendicular to the plane of the drawing) in accordance with output image data supplied from an input device (not shown) of the digital photo printer. Unit 36,
Further, there is provided a scanning and conveying means 38 for conveying the photosensitive material A at a constant speed in a sub-scanning direction (direction of the arrow b in the figure) substantially orthogonal to the main scanning direction.

Exposure unit 36 is provided for R, R,
Three light sources for emitting light beams L corresponding to the respective exposures of G and B, modulation means such as an AOM (acousto-optic modulator) for modulating the light beam L emitted from the light source according to image data,
An optical deflector such as a polygon mirror for deflecting the modulated light beam in the main scanning direction, and a light beam L deflected in the main scanning direction
Is a light beam scanning device including an fθ (scanning) lens or the like that forms an image at a predetermined position on an exposure position (scanning line) X with a predetermined beam diameter.

The exposure unit 36 may be a PDP (plasma display) in addition to the light beam scanning device.
Array, ELD (electroluminescent display) array, LED (light emitting diode) array, LCD
Various types of digital raster exposure means using various light emitting arrays or spatial modulation element arrays extending in the direction orthogonal to the scanning and conveying direction, such as (liquid crystal display) arrays, DMD (digital micromirror device) arrays, and laser arrays. It is possible.

The scanning / conveying means 38 further comprises a pair of conveying rollers 40 and 42 disposed before and after the exposure position X, and the photosensitive material A with higher precision.
And the like. The scanning and transporting means 38 is not limited to the above-described configuration, and may include an exposure drum that transports the photosensitive material A while holding the photosensitive material A at the exposure position X.
In addition, a scanning conveyance unit using two nip rollers that contact the exposure drum with the exposure position X interposed therebetween is also preferably exemplified.

In the image recording unit 16, the light beam L modulated by the exposure unit 36 in accordance with the digital image data
While the photosensitive material A is held at the exposure position X along the exposure guide 44 by the conveying roller pairs 40 and 42 of the scanning conveying means 38 while deflecting the main scanning direction in the sub-scanning direction. The photosensitive material A is two-dimensionally scanned and exposed to record a latent image, that is, an image is recorded on the photosensitive material A by so-called raster scanning exposure.

A distribution unit 18 is arranged further downstream of the image recording unit 16. In the process of exposing and developing a silver halide photographic light-sensitive material that is currently used as a general photograph, development requires more time than exposure. Therefore, when a plurality of photosensitive materials are continuously exposed and developed, development cannot be performed in time for the exposure, so that it is necessary to temporarily store the exposed photosensitive materials in a stocker or the like. That is, the exposure and development steps are generally rate-controlled by the development processing.

The sorting unit 18 sorts the photosensitive material A, which is usually conveyed in a single row, into a plurality of rows in the conveying direction as needed, and supplies the photosensitive material A in a plurality of rows to the processor 20 in parallel. , To improve the processing capability of the processor 20 to absorb the difference in processing time between exposure and development.
6, an auxiliary belt conveyor 48, two suction units 50 and 52 each having two suction cups connected to suction means (not shown), and the like.

The exposed photosensitive material A is not conveyed by the belt conveyor 46 and the auxiliary belt conveyor 48, but is placed on the belt conveyor 46 and conveyed downstream. Note that the transport speed of the photosensitive material A by the belt conveyor 46 and the auxiliary belt conveyor 48 is set slightly higher than the scanning transport speed. Thus, the influence of the driving of the belt conveyor 46 and the auxiliary belt conveyor 48 on the scanning and conveying of the photosensitive material A can be more reliably eliminated.

The auxiliary belt conveyor 48 is arranged on the center line of the belt conveyor 46 in the width direction at a slight interval from the belt conveyor 46. The auxiliary belt conveyor 48 suppresses the curl (curvature) of the photosensitive material A, and assists the conveyance by the belt conveyor 46 and the suction holding of the photosensitive material A by the suction units 50 and 52, and the photosensitive material A having the minimum size in the width direction. However, a narrow endless belt that can be suction-held by the suction units 50 and 52 is used.

The suction units 50 and 52 are arranged on both sides of the auxiliary belt conveyor 48 in the width direction.
In the drawing unit 50 on the near side in the figure, after the photosensitive material A is released from the scanning and transporting means 38 and transported to a predetermined position by the belt conveyor 46, the photosensitive material A is sucked and held and slightly lifted, and the transport of the photosensitive material A is performed. Moves diagonally downstream to the right (front in the figure) with respect to the direction, releases adsorption, and
To the right. Similarly, the suction unit 52 on the far side in the figure distributes the photosensitive material A to the left side.

For example, the photosensitive material A can be sorted into three rows by sequentially repeating sorting to the right by the suction unit 50, sorting to the left by the suction unit 52, and linear transport without sorting. Alternatively, the photosensitive materials A can be distributed in two rows by alternately performing the horizontal distribution by the suction units 50 and 52. In addition, the photosensitive material A can be supplied to the processor 20 in a single row by performing only linear transport without performing sorting.

The moving means of the suction units 50 and 52 are not particularly limited. For example, moving means using a link, moving means using a cam, moving means using a guide rail or a guide hole, and moving these means Various known methods such as moving means appropriately combining means can be used. Further, in the above-described embodiment, the case where the photosensitive material A is distributed in the first to third rows is exemplified, but the present invention is not limited to this, and the photosensitive material A may be distributed in four or more rows.

The sorting unit 18 is not particularly limited.
Various methods of distributing the sheet material into a plurality of rows are available. For example, a method of distributing the sheet material using a circular turret that rotates around an axis, or a method of transporting the photosensitive material A into a plurality of blocks in the transport direction, for example, three blocks For example, the central block is moved in the horizontal direction and distributed. Alternatively, the photosensitive material A may be supplied to the processor 20 in a single row without the distributing unit 18.

Further, in the image recording apparatus 10, the photosensitive material A of all sizes is not always arranged in a plurality of rows, and the photosensitive material A of a large size which cannot be processed in a plurality of rows is divided into a single row without sorting. It may be carried into the processor 20 as it is. Also, when performing sorting, instead of sorting all sizes in the same number of rows, according to the size of the photosensitive material A, for example, the L size is sorted into three rows, and the six-piece section is sorted into two rows. You may sort the numbers.

The photosensitive material A, which is sorted in the sorting section 18 in the horizontal direction and is arranged in a plurality of rows,
Is supplied to the processor 20 through the outlet 56. In the processor 20, for example, in the case of developing a silver halide photographic light-sensitive material, a predetermined developing process according to the light-sensitive material A such as a color developing tank, a bleach-fixing tank, and a washing tank was performed to visualize the latent image. After that, it is dried and finished print, and again,
The prints are collected in a single row in the order of print creation (exposure order) and discharged to a sorter or the like.

In the illustrated example, an example of a printer for performing digital scanning exposure is shown. However, the present invention is not limited to this. For example, an image photographed on a film is projected on the photosensitive material to convert the photosensitive material. It is also possible to suitably use a printer or the like that performs direct exposure for surface exposure. The printer 10
As long as the roll-shaped photosensitive material is cut into a sheet and used, any of conventionally known various configurations can be applied.

As described above, the image recording apparatus of the present invention has been described in detail. However, the present invention is not limited to the above embodiment, and various improvements and modifications may be made without departing from the gist of the present invention. Of course.

[0066]

As described in detail above, the image recording apparatus of the present invention cuts a roll-shaped photosensitive material into a sheet of a predetermined length and uses it. , A sensor detects a reference position marked on the circumference of one of the rollers of the conveying roller pair, the number of drive pulses of the conveying roller pair by the pulse motor from this reference position, and the roller stored in the storage device. Based on the eccentricity data described above, the variation in the feed amount of the photosensitive material related to the eccentricity of one of the conveying roller pairs is corrected. According to a second aspect of the present invention, a displacement meter measures the radius of one of the transport roller pairs, and based on the number of drive pulses of the transport roller pair driven by the pulse motor and the radius measured by the displacement meter, transports. This is to correct variations in the feed amount of the photosensitive material due to the eccentricity of one of the rollers of the roller pair. As a result, according to the image recording apparatus of the present invention, the sheet length of the photosensitive material can be made uniform without increasing the cost.

[Brief description of the drawings]

FIG. 1 is a schematic view of an embodiment of an image recording apparatus according to the present invention.

FIGS. 2A and 2B are conceptual diagrams of an embodiment of a driving system for a pair of conveying rollers.

3 (a), (b) and (c) are schematic diagrams of an embodiment showing a method of measuring a radius of a roller.

FIG. 4 is a graph illustrating an example of a relationship between a rotation amount of a roller and a feed amount of a photosensitive material.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Image recording apparatus 12 Photosensitive material supply part 14 Back printing part 16 Image recording part 18 Distributing part 20 Processor (developing machine) 22, 24 Loading part 26, 28 Pull-out roller pair 30, 32 Cutter 34 Magazine 36 Exposure unit 38 Scanning conveyance means 40, 42, 54, 68 Transport roller pair 44 Exposure guide 46 Belt conveyor 48 Auxiliary belt conveyor 50, 52 Suction unit 56 Discharge port 58 Sensor 60 Displacement meter 62 Correction device 64 Pulse motor 66 Storage device 70 Reference position A Photosensitive material L Light Beam X exposure position

Claims (5)

[Claims] An image recording apparatus for cutting and using a roll-shaped photosensitive material into a sheet of a predetermined length, wherein a reference position is marked on the circumference of one of the rollers.
A transport roller pair for nipping and transporting the photosensitive material, a pulse motor for pulse-driving the transport roller pair, a sensor for detecting the reference position, and a storage device for storing eccentricity data of one of the transport roller pairs And an eccentricity of one roller of the transport roller pair based on the number of drive pulses of the transport roller pair by the pulse motor from the reference position detected by the sensor and eccentricity data stored in the storage device. An image recording apparatus, comprising: a correction device configured to correct a variation in a feed amount of the photosensitive material with respect to a core. 2. An image recording apparatus which cuts and uses a roll-shaped photosensitive material into a sheet of a predetermined length, comprising: a pair of conveying rollers for nipping and conveying the photosensitive material; and a pulse for pulse-driving the pair of conveying rollers. A motor, a displacement meter that measures the radius of one of the rollers of the transport roller pair, and the number of drive pulses of the transport roller pair by the pulse motor and the radius measured by the displacement meter. An image recording apparatus, comprising: a correction device configured to correct a variation in the feed amount of the photosensitive material due to the eccentricity of one of the rollers. 3. The transporting roller pair has a notch, and the displacement meter is a feeder which is a contact point between the photosensitive material and the transporting roller pair through a notch of the other roller. The image recording apparatus according to claim 2, wherein a radius of the one roller including the thickness of the photosensitive material at a point position is measured. 4. One of the rollers of the transport roller pair has a longer axial length than the other roller, and the displacement meter corresponds to a feed point position which is a contact point between the photosensitive material and the transport roller pair. The image recording apparatus according to claim 2, wherein a radius of an end of the one roller is measured. 5. The displacement meter measures a radius of the one roller at a position shifted by a predetermined angle from a feed point position which is a contact point between the photosensitive material and the transport roller pair. The image recording device according to claim 2.