JPH0950109A - Image recording device - Google Patents

Abstract

(57) Abstract: An object of the present invention is to prevent the occurrence of scratches due to physical contact with a roll-shaped photosensitive material, and to roll the photosensitive material surface with light of an unnecessary wavelength. An object of the present invention is to provide an image recording apparatus capable of detecting the width of a photosensitive material without emitting light so that the photosensitive material does not become exposed. An image recording apparatus 100 includes a roll-shaped photosensitive material 1.
And a roll-shaped photosensitive material 1 held from both side surfaces in the storage body 150 and arranged in a predetermined positional relationship with both side end portions of the roll-shaped photosensitive material 1. Further, a sensitive material holding means 16 having a pair of right and left flanges 2, a detecting means 7 for detecting the flange position of the sensitive material holding means 16, and a detection signal for outputting the signal detected by the detecting means 7 to the control means 141. Output means, and the control means 141
From the detection signal input from the detection signal output means.
It is characterized in that a calculation unit for calculating the width of the photosensitive material of the strip-shaped photosensitive material 1 is provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image recording apparatus, and more specifically to a plurality of storage bodies for individually storing roll-shaped photosensitive materials having different width dimensions, which are stored in the image recording apparatus. The present invention relates to an image recording device that switches an image and records an image.

[0002]

2. Description of the Related Art A conventional image recording apparatus is provided with a container for accommodating a plurality of roll-shaped photosensitive materials having different widths (hereinafter referred to as photosensitive materials), and the size of the photosensitive material to be recorded. The image recording is performed by switching the sensitive material according to the above.

The image recording apparatus includes a plate making copying camera for copying an original image on a photosensitive material and a digital image output apparatus for recording an image on the photosensitive material by using a semiconductor laser as a light source.

The photosensitive material processed in the image recording apparatus includes a silver salt film, an offset printing plate having a silver salt photosensitive layer on the surface of a paper as a substrate, a printing paper, and a semiconductor laser. In the case of a light-sensitive material used as a light source, a dedicated light-sensitive material having a photosensitive wavelength corresponding to the wavelength of the semiconductor laser is used.

The widthwise dimension is standardized depending on the type of the photosensitive material. In the case of a plate-making film, 8 inches,
A roll-shaped photosensitive material having a width of 10 inches, 11 inches, 14 inches, or the like and having a length of about 30 m and wound around a paper tube is used.

As a storage body for sensitive materials, a plurality of dedicated storage bodies for storing sensitive materials having different width dimensions are provided in the image recording apparatus, and several sets are attached to the apparatus main body. There are known ones that perform a switching process to a storage body in which a sensitive material is stored, and one that provides a plurality of storage bodies for a sensitive material in the main body of the image recording apparatus and performs a switching process of the sensitive material.

An image recording apparatus for processing these photosensitive materials is
A width for detecting the width of the photosensitive material housed in the image recording device, because multiple types of photosensitive materials with different width dimensions are stored in the device and image recording is performed by switching the recording size and recording magnification. A sensing device is used.

[Prior art example 1] FIG.
As described in 7, a plurality of microswitches 80 are provided on one side or both sides of the end portion in the width direction of the photosensitive material 1 depending on the width dimension of the photosensitive material 1 to be processed in the conveyance path of the photosensitive material 1 supplied from the container. Are arranged across the width of the photosensitive material 1, and the microswitch 80
It is known that the photosensitive material width is detected by an on / off signal from a micro switch detecting the photosensitive material 1 by bringing the actuator of FIG.

[Prior Art 2] As shown in FIG.
It is known that a plurality of reflective or transmissive optical sensors 90 are arranged at positions corresponding to the width of the photosensitive material and the width of the photosensitive material 1 is detected in a non-contact manner. In the case of using the optical sensor 90, the photosensitive material 1 must inevitably be irradiated with light, and there is a problem that the photosensitive material 1 is exposed by the detection light.
In order to prevent photosensitivity, detection light outside the photosensitive wavelength range of the photosensitive material 1 is used. Since the photosensitive material 1 used in the image recording apparatus usually has a sensitivity peak in the visible light range of 400 to 700 nm in the photosensitive wavelength range, the wavelength of the photosensor is 9 in the spectral wavelength range.
An optical sensor having a sensitivity peak from 00 to 1000 nm is used as the detection light.

[Prior Art 3] Further, in an image recording apparatus using a semiconductor laser as a light source, the photosensitive wavelength range of the photosensitive material to be photographed is 780 nm and the sensitivity peak is 1000.
Since it has a photosensitive wavelength range up to nm or more, the photosensitive material is exposed to light in the emission wavelength range of the conventionally used photosensor. As a countermeasure, contact detection with a micro switch or 4
It is proposed to use an optical sensor having a special ultraviolet wavelength having a wavelength peak in the vicinity of 00 nm, but the one using a microswitch has a scratch on the surface of the light-sensitive material like the conventional example 1. It becomes a problem. Further, when the optical sensor is used, there is a problem that the optical sensor in a special wavelength range which is not generally used is used, which is very expensive.

As a means for solving such a problem, a technique disclosed in Japanese Patent Publication No. 5-29272 has been proposed.
Although the presence or absence of a sensitive material is detected using an optical sensor, the light emission timing of the optical sensor is controlled to cause pulsed light emission, and the cumulative exposure amount on the irradiated surface of the sensitive material is detected. The photosensitive material was prevented from being exposed to light by controlling the energization time and the energization interval of the photosensor so that the exposure amount was below the critical exposure amount determined by the photosensitivity of the material.

[0012]

The device using the micro switch of Conventional Example 1 is inexpensive and easy to use, but it requires physical contact with the surface of the photosensitive material.
The actuator may be deformed, resulting in detection failure.
Of scratches on the contact surface between the actuator and the actuator, and the photosensitive material 1
However, when pulling out a bent sensitive material, there is a problem that the bent sensitive material damages the actuator.

Further, the one using the optical sensor of the conventional example 2 is
Since the sensitive material 1 can be detected in a non-contact manner, scratches such as microswitches do not occur, but the sensitive material 1 is exposed unless light having a wavelength other than the sensitive area of the sensitive material 1 is exposed. Therefore, if the type of the photosensitive material 1 to be processed is changed, the photosensitive wavelength area of the photosensitive material 1 and the spectral wavelength peak of the optical sensor will match and the photosensitive material 1 There was a problem that it was exposed to light and could not be used.

Further, the prior art 3 is excellent in that it is not necessary to use an optical sensor in a special wavelength range and an inexpensive optical sensor can be used, but it can be applied when the sensing surface of the photosensitive material moves. , It is not suitable for detecting the photosensitive material stored in a stationary state in the storage body.

This is because a plurality of sensitive materials having different widths are usually set in the image recording apparatus, so that the width of the sensitive material currently set is displayed or the information signal of the sensitive material width is displayed. Need to get However, if the photosensitive material is detected in a state where the photosensitive material is stationary inside the housing, there is a problem that the photosensitive material is exposed because the cumulative exposure amount of the photosensitive material surface exceeds the critical exposure amount due to the irradiation of the optical sensor. Therefore, the conventional technique 3 also has a problem that the sensitive material cannot be detected in a stationary state.

Therefore, an object of the present invention is to detect light without light emission so that scratches due to physical contact do not occur and the light-sensitive material surface is not exposed to light of an unnecessary wavelength and thus the light-sensitive material is not exposed. An object is to provide an image recording device capable of detecting the width of a material.

[0017]

In order to achieve the above-mentioned object, in the invention of claim 1, a plurality of roll-shaped photosensitive materials having different width dimensions housed in the apparatus main body are conveyed along a conveyance system and conveyance. In an image recording device provided with a control means for switching control of speed and the like, the image recording device comprises a container for accommodating a roll-shaped photosensitive material, and the roll-shaped photosensitive material from both side surfaces in the container. A holding member for holding the photosensitive material, which comprises a pair of left and right flanges arranged in a predetermined positional relationship with both side end portions of the roll-shaped photosensitive material, and a detecting means for detecting the flange position of the photosensitive material holding means A detection signal output means for outputting a signal detected by the detection means to the control means, wherein the control means detects the detection signal input from the detection signal output means to the width of the roll-shaped sensitive material. It is characterized by comprising an arithmetic unit for calculating

According to a second aspect of the invention, in the image recording apparatus according to the first aspect, the detecting means is arranged in the storage body so as to face the magnetic body provided on the flange and the outer peripheral surface of the flange. A magnetic sensor is used to detect the position of the outer peripheral surface of the flange.

According to a third aspect of the present invention, in the image recording apparatus according to the first aspect, the detecting means is a micro switch that contacts the outer peripheral surface of the flange and detects the outer peripheral surface position of the flange.

[0020]

According to the first aspect of the invention, the photosensitive material is held by the photosensitive material holding means provided inside the housing of the image recording apparatus. The sensitive material holding means holding the sensitive material detects the position of the flange arranged in a predetermined positional relationship with both side end portions of the sensitive material by the sensitive material detecting means. The signal detected by the detection means is input to the arithmetic section of the control means by the detection signal output means.

In the calculation unit of the control means to which the detection signal is input, the detection signal of the flange position and the correlation data of the flange position and the photosensitive material width stored in advance in the calculation unit are compared and calculated. The sensitive material width corresponding to the flange detection signal is obtained, and the sensitive material width data is obtained.

The obtained sensitive material width data is compared with, for example, a display of the sensitive material width and a necessary sensitive material width determined by an instruction value of the magnification, and the image fits on the sensitive material at the indicated magnification. If there is no such error, an error display is performed, or a process for switching to a sensitive material having an appropriate width dimension is performed.

According to a second aspect of the invention, the detecting means according to the first aspect is arranged in the storage body so as to face the magnetic body provided on the flange of the sensitive material holding means and the outer peripheral surface of the flange. And a magnetic sensor, the flange position is detected in a non-contact and non-emission manner.

According to the third aspect of the invention, as the detecting means according to the first aspect, by using a microswitch for contacting the outer peripheral surface of the flange of the photosensitive material holding means to detect the outer peripheral surface position of the flange, The flange position is detected with no light emission and no contact with the sensitive material surface.

[0025]

BEST MODE FOR CARRYING OUT THE INVENTION

[Overall Configuration of Embodiment] FIG. 1 is a sectional view of an image recording apparatus for carrying out the present invention. The overall configuration of this image recording apparatus will be described below with reference to FIG.

At the upper right portion of the image recording apparatus 100, a sensitive material storage section 150 is provided. In this embodiment, two sets of the photosensitive material storage units 150 are provided, and the photosensitive materials 1 having different width dimensions are stored therein.

First, the conveyance path of the photosensitive material 1 will be described by taking the photosensitive material storage section 150a as an example. Sensitive material storage unit 150
The internal configuration and switching of the sensitive material storage portions 150a and 150b will be described later in detail.

The sensitive material 1 in the sensitive material storage portion 150a is gripped by the first transport roller 121A provided in the image recording apparatus 100 via the transport roller 8A, and then the second transport roller 121A. -The rollers 122A, 122C, and the third conveyor roller 123 are conveyed in this order toward the main roller 112. The first conveyor roller 121A, the second conveyor rollers 122A and 122C, and the third conveyor roller 123 are each composed of a pair of opposed rollers, and one roller has a rotation direction. A drive motor A and an electromagnetic clutch (not shown) that are switchable between the forward and reverse directions are connected to each other so that the driving force is transmitted to each roller. The drive motor A and the electromagnetic clutch are controlled. It is controlled by the means 141.

When the sensitive material 1 in the sensitive material storage portion 150a is transported, the drive rollers of the first transport roller 121B and the second transport roller 122B that transport the sensitive material 1 in the sensitive material storage portion 150b. Is controlled by the control means 141 so that the electromagnetic clutch is released and the driving force of the driving motor A is not transmitted.

The photosensitive material 1 which has reached the third transport roller 123 is
It is conveyed to the peripheral surface of the main roller 112 through the cutter 111, and by the pair of auxiliary rollers 113 rotatably abutted on the peripheral surface of the main roller 112 on the peripheral surface of the main roller 112. , And is conveyed in the sub-scanning direction while expanding on the peripheral surface of the main roller 112.

The recording light L from the image recording section 130 is irradiated in the main scanning direction on the photosensitive surface of the photosensitive material 1 stretched by the auxiliary roller 113. The image recording unit 130 outputs a recording light L through a semiconductor laser installed therein (not shown) as a light source, a polarizer such as a polygon or a galvanometer mirror, and an optical system such as a lens. The image information is transmitted from the outside of the image recording apparatus 100 by the image processing unit 1 by an image reader or a workstation.
40 is input to the image recording unit 13 from the image processing unit 140.
On the basis of the image information output to 0, it is configured to convert into recording light L using a semiconductor laser as a light source and irradiate the photosensitive material 1. The image recording unit 130 is a well-known
Since the output optical system is used, detailed description will be omitted.

The photosensitive material 1 on which the image is recorded by the recording light L on the main roller 112 is the fourth conveying rollers 114A, 114.
It is sent to the discharge roller 115 by B and 114C and discharged from the main body of the apparatus to the outside. Third conveyor roller 123, main roller 112, fourth conveyor rollers 114A, 114B, 11
4C, each roller of the discharge roller 115 is driven by an independent drive motor B (not shown) different from the drive motor for transporting the photosensitive material 1 to the third transport roller 123. Being driven.

Sensitive material 1 discharged by discharge roller 115
Are continuously recorded and stored in a photosensitive material storage box (not shown) provided outside the image recording apparatus 100 until the photosensitive material 1 is cut by the cutter 111. The sensitive material storage box may be provided inside the image recording apparatus 100. Further, the development processing may be performed by connecting to an automatic developing machine instead of winding and storing.

When the image recording length on the photosensitive material 1 reaches a predetermined required length, a cutting signal is output by the control means 141 and the cutter 111 is operated to cut the rear end of the photosensitive material 1. It

Next, a case of processing the photosensitive material 1 stored in the photosensitive material storage portion 150b will be described. Sensitive material storage section 15
The photosensitive material 1 of 0b is the first transport roller 121B and the second transport roller 121B.
It is conveyed toward the third conveyor roller 123 by the roller 122B. After the photosensitive material 1 reaches the third conveyor roller 123,
It is processed in the same manner as the photosensitive material storage unit 150a.

Next, the case of switching from the photosensitive material 1 stored in the photosensitive material storage portion 150a to the photosensitive material 1 stored in the photosensitive material storage portion 150b will be described. First, the drive motor A is stopped by the control means 141 and the first transport roller 121A,
2nd conveyance roller 122A, 122C, 3rd conveyance roller 1
23 stops the transportation. Next, the cutting signal is input from the control means 141 to the cutter 111 so that the photosensitive material 1 is cut by the cutter 11.
Cut at 1. Subsequently, the drive motor A reversely rotates, and the second conveying roller 1 which conveys the sensitive material 1 in the sensitive material storage portion 150a.
22A and 122C reversely rotate, and the first transport roller 121A
The photosensitive material 1 is held in a loop shape between the second conveying roller 122A and the second conveying roller 122A. At this time, the electromagnetic clutch of the first transport roller 121A is released, and the rotation of the first transport roller 121A is stopped.

A sensitive material sensor 143 is disposed between the second transport rollers 122A and 122C, and when the sensitive material sensor 143 no longer detects the sensitive material 1, the rotation of the drive motor A is stopped. Then, the electromagnetic clutches of the second transport rollers 122A and 122C are released.

Sensitive material 1 stored in sensitive material storage section 150b
The detection sensor 144 provided between the second transport roller 122B and the third transport roller 123 causes the tip of the photosensitive material 1 to move to the second transport roller 122B and the third transport roller 123. The sensitive material storage section 150
When the photosensitive material 1 of “a” is rewound and the rotation of the drive motor A is stopped, the first transport roller 121B and the second transport roller 122.
The electromagnetic clutch B is connected, and a conveyance signal is output from the control means 141, the drive motor A is rotated in the forward direction again, and the photosensitive material 1 is conveyed toward the third conveyance roller 123.

The detecting means 143 and 144 detect the sensitive material 1 by using the optical sensor described in the prior art 3 to pulse-light the detection light only when the sensitive material 1 is conveyed. Since the photosensor does not output detection light when the conveyance of the photosensitive material 1 is stopped, the photosensitive material 1 is not exposed to light. Regarding the transportation after the third transportation roller 123,
Since it is the same as the case of the sensitive material storage section 150a, the description thereof will be omitted.

In the above description, in the container 150a, the rewinding position of the tip of the photosensitive material 1 is set to the second transport roller 12.
2A and the second transport roller 122C, and also the storage body 15
0b, the rewind position of the tip of the photosensitive material 1 is set to the second transport roll.
The case where the film is rewound between the la 122B and the third conveying roller 123 has been described, but as another means, the photosensitive material storage unit 1 may be used.
It is also possible to rewind the photosensitive material 1 into the photosensitive material accommodating portions 150a and 150b by providing a drive mechanism on the transport rollers 8A and 8B and the respective support shafts 4 in 50a and 150b and rotating them forward and backward.

When a drive mechanism is provided in the photosensitive material storage units 150a and 150b, it is desired to switch to the photosensitive material 1 of the width dimension not set in the image recording apparatus 100 during the image recording process of the photosensitive material 1. In this case, the photosensitive material 1 can be rewound to the photosensitive material holding means 16 described later, which is preferable because the handling at the time of exchanging the photosensitive material becomes easy.

[Description of Sensitive Material Holding Means] Next, FIGS.
The sensitive material holding means for holding the sensitive material 1 will be described with reference to FIG. 2 is a sectional view showing a state in which the sensitive material holding means 16 holds the sensitive material 1, FIG. 3 is a front view of the sensitive material 1, FIG. 4 is a side view thereof, and FIG. 1 is a perspective view showing a state where 1 is held.

As shown in FIGS. 2 and 3, the sensitive material holding means 16 is inserted into the hollow portion 18 of the paper tube 15 around which the sensitive material 1 is wound to hold the sensitive material 1. 11, a flange 2B serving as a reference for detecting the width of the sensitive material, a boss 12 for locking the sensitive material holding means 16 to the support shaft 4, and a sensitive material holding means 1
Fixing screw 13 for locking 6 to support shaft 4 via boss 12
And are used as a left and right pair to support both side surfaces of the photosensitive material 1.

The photosensitive material holding means 16 has a through hole 1 at the center thereof.
7 is provided, and the photosensitive material holding means 16 is supported by inserting the support shaft 4 into the through hole 17. Further, the movement of the sensitive material holding means 16 in the axial direction of the support shaft 4 is restricted by screwing a fixing screw 13 provided on the boss 12 in the support shaft 4 direction. The locking of the sensitive material holding means 16 to the support shaft 4 is not limited to the screw fixing by the fixing screw 13, and the boss 12 and the support shaft 4 may be locked by pinning by providing through holes. Good.

The sensitive material holding means 16 is positioned with respect to the support shaft 4 by providing marks on the support shaft 4 in accordance with the width of the sensitive material 1 to be held for alignment, or by forming grooves on the outer peripheral surface of the support shaft 4. Various modes are possible, such as providing and screwing the tip of the fixing screw 13 into the groove.

[Explanation of Storage Body and Detecting Means] Next, with reference to FIGS. 6 to 9, the operation of storing the photosensitive material 1 in the storage body 150 will be described. Note that common parts are shown by the same numbers in FIGS. 6 to 9.

FIG. 6 is a sectional view showing a state in which the sensitive material 1 having a short width is held by the sensitive material holding means 16 on the one side basis in the container 150, and FIG. 7 is a side view thereof. FIG. 8 is a cross-sectional view showing a state in which the sensitive material 1 having a long width is held in the housing body on the one side basis, and FIG. 9 is a side view thereof.

In the present embodiment, the case where the magnetic sensor according to claim 2 is used as the detecting means of the flange 2 will be described as an example.

In FIGS. 6 to 9, the photosensitive material 1 is stored in the storage body 150 with the left side surface of the photosensitive material 1 as a reference position. The housing 150 is surrounded by a plurality of side plates 9 that cover the circumference of the roll-shaped photosensitive material in a light-tight state so that external light does not enter the housing 150. On one surface of the side plate 9, a slit 20 for unwinding the stored sensitive material 1 from the storage body 150 is opened in the width direction of the sensitive material 1, and the opening is in contact with the upper and lower surfaces of the sensitive material 1. In order to prevent outside light from entering the housing 150, a light-shielding member such as felt (not shown) is provided. The work of storing the photosensitive material 1 in the storage body 150 is performed in a dark room or under a safety light having a wavelength that does not overlap with the wavelength of the sensitivity region of the photosensitive material 1 depending on the photosensitive sensitivity region of the photosensitive material 1.

The sensitive material 1 held by the sensitive material holding means 16 is
The side plate 9 located on the upper surface of the storage body 150 is opened with a hinge (not shown) as a fulcrum, and is stored in the storage body 150 through the opening. The sensitive material 1 is held by the sensitive material holding means 16, the sensitive material holding means 16 is pivotally supported by the support shaft 4, and the support shaft 4 is supported by the bearings 5 of the support portions 6 provided on both sides of the housing 150. Both ends of 4 are rotatably supported.

When the photosensitive material 1 is stored in the storage body 150,
A magnetic sensor 7A facing the outer peripheral surface of the flange 2B of the sensitive material holding means 16 detects the magnetic body 3 (see FIGS. 10 to 13) provided on the flange 2B. The configuration in which the magnetic body 3 is provided on the flange 2B will be described later in detail.

The detecting means 7A is preliminarily attached at a position facing the outer peripheral surface position of the flange 2B in the sensitive material holding means 16 holding the sensitive material 1 according to the width dimension of the sensitive material 1 to be stored. That is, the sensitive material 1 is the sensitive material holding means 16
Since the outer peripheral surface position of the flange 2B is located in the axial direction (rightward in the drawing) with respect to the width position of the photosensitive material 1 in the state of being held at, It is attached to the correlation position of.

In the embodiment shown in FIG. 6, since the width of the photosensitive material 1 stored is shorter than that of the photosensitive material 1 shown in FIG. 8, only the magnetic sensor 7A detects the magnetic material of the flange 2B. The detection signal detected by the magnetic sensor 7A is output to the outside of the container 150 by a signal line (not shown) of the detection signal output unit wired from the detection unit 7A to the outside of the container 150.

The detection signal output means is not limited to the signal line described in this embodiment, but a connector connected to the detection means 7 on the side of the housing side plate on which the image recording device is inserted.
When the container is attached to the image recording apparatus 100,
If the connectors are positioned so as to be connected to the connector provided on the storage section side of the image recording apparatus 100, not only the labor for manually connecting the signal line of the detection signal output means can be saved, but also This is preferable because it can prevent forgetting to connect the signal line.

In FIG. 7, a pair of transport rollers 8 are provided between the sensitive material 1 and the slit 20 to guide the sensitive material 1 to the slit 20. If a drive means (not shown) is provided in the container 150 to drive the transport roller 8 and the support shaft 4, the photosensitive material 1 can be unwound and unwound from the container 150.

Further, a drive transmission mechanism is provided in the storage body 150, and the drive force is transmitted from the image recording device side in which the storage body 150 is set to the transport roller 8 and the support shaft 4 via the drive transmission mechanism. As a result, the photosensitive material 1 can be unwound and wound. As the drive transmission mechanism in this case,
A transmission mechanism (not shown) based on a combination of gears may be used.

A transport roller 8 and a support shaft 4 are provided by providing driving means.
When the photosensitive material 1 is rotated, the photosensitive material 1 can be unwound and unwound, and the photosensitive material 1 can be easily attached to the image recording apparatus when the width dimension of the photosensitive material 1 is switched. The transport roller 8 and the drive means for the transport roller 8 and the support shaft 4 are not indispensable, but the container 150
The leading end of the photosensitive material 1 may be manually removed, and the photosensitive material 1 may be unwound and rolled in by the transport mechanism on the image recording apparatus side.

[Explanation of Magnetic Sensor of Claim 2] Next, referring to FIG.
The configuration in which the magnetic body is provided on the flange 2B will be described with reference to FIGS.

10 to 13 are sectional views showing various modes of providing a magnetic body on the flange 2B. FIG.
11 is a cross-sectional view of the flange 2B coated with a coating material mixed with a magnetic material on the outer peripheral surface, and FIG. 11 is an enlarged view of the cross-section of the outer peripheral portion of the flange 2B represented by the symbol X in FIG.

In FIG. 10, a coating material mixed with the powder of the magnetic material 3 is applied to the outer peripheral surface of the flange 2B. As the powder of the magnetic body 3, a mixture of iron powder and paint is applied.

FIG. 11 is an enlarged view of the outer peripheral surface of the flange 2B coated with the magnetic material 3. The mixing ratio of the iron powder and the paint and the film pressure of the paint change depending on the distance between the magnetic sensor and the outer peripheral surface of the flange and the sensitivity of the magnetic sensor, and are experimentally determined in consideration of these points.

In FIG. 12, the flange 2B is used as the magnetic body 3.
A thin plate made of iron whose surface is anti-oxidation is fixed to the outer peripheral surface of the.

In FIG. 13, iron is embedded as the magnetic body 3 inside the flange 2B. In order to embed the magnetic body in the flange 2B, the magnetic body 3 may be placed in a mold in advance when the flange 2 is formed and integrally formed.

In the present embodiment, the cheapest iron was used as the material for the magnetic body 3, but the material is not limited to iron, and a material other than iron can be used as long as it is a magnetic body.

[Explanation of Micro Switch of Claim 3] In the above embodiments, the case where the magnetic sensor is used in the width detecting device has been described as an example, but as the detecting means 7A and 7B,
The micro switch described in claim 3 can also be used. Even when a micro switch is used for the detection means 7A and 7B, the configuration of the container 150 and the sensitive material holding means 16 is as shown in FIG.
The same configuration as that shown in FIGS.

The difference from the case of using the magnetic sensor is that
Detection is made by the fact that the detection means 7A, 7B are microswitches, the fact that no magnetic material is used for the flange 2B of the sensitive material holding means 16, and that the actuator of the microswitch contacts the outer peripheral surface of the flange 2B. Only the points that are done.

Even when a micro switch is used as the detecting means 7A, 7B, the actuator of the micro switch comes into contact with the outer peripheral surface of the flange 2B, so that the photosensitive material 1 is not scratched, and Since the mounting position of the micro switch is not on the conveyance path of the sensitive material 1, the sensitive material 1
The micro switch will not be damaged even if it is rewound when the paper jams. Since the microswitch does not emit light, the photosensitive material 1 is not exposed to light.

[Other Embodiments of Storage Body] In the above embodiments, the state in which the photosensitive material 1 is stored and held on the one side basis in the storage body has been described. There is something to be transported. Next, the case where the center of the sensitive material is held in the housing will be described.

FIG. 14 is a sectional view showing a state in which the center of the sensitive material 1 having a short width is held in the center of the container, and FIG. 15 is a sectional view showing the center of the photosensitive material 1 having a long width as a reference. The sectional view hold | maintained at the center is shown. In this embodiment, the photosensitive material 1 is stored with the central portion 21 of the storage body 150 as a reference. Except for the storage position of the sensitive material, there is no difference between the above-described embodiment and this embodiment, so only the relationship of the storage position of the sensitive material 1 will be described.

The sensitive material 1 is held in the same size on the left and right with respect to the center of the storage body 150 in a horizontally distributed manner. The detectors 7A and 7B may be arranged on either the left or right side of the container 150, and the detectors 7A and 7B may be arranged.
B may be arranged on the left and right separately or on both the left and right. Also in the present embodiment, the detection means 7A and 7B can use the magnetic sensor in the above-described embodiment or the detection means using a microswitch.

[Description of Arithmetic Unit] Next, the width of the sensitive material is calculated by the arithmetic unit provided in the control unit 141 in the image recording apparatus 100 from the detection signal output from the detection signal output unit in the container 150. The process until the photosensitive material width signal is output will be described.

FIG. 16 is a block diagram of the arithmetic unit 70 for calculating the photosensitive material width in the control means 141 for controlling the image recording apparatus. Detection means 7 provided in the storage body 150
Signals 71 and 72 when A and 7B detect the flange 2B are
The detection signal output means of the container 150 inputs the calculation section 70 of the control means 141 of the image recording apparatus 100 shown in FIG.

In the calculation unit 70, for example, when the width of the photosensitive material 1 is short, the signal 71 of the detecting means 7A is input to the CPU 73. The CPU 73 uses the input detection signal 71 to
By comparing the width dimension of the sensitive material 1 stored in advance in the ROM 74 with the relative position data to which the axial distance from the side surface of the sensitive material 1 to the outer peripheral surface of the flange of the sensitive material holding means 16 is added, The width of the photosensitive material 1 stored in the storage body is calculated.

The width dimension data of the sensitive material 1 calculated by the CPU 73 is stored as a width dimension data of the sensitive material in a plurality of storage areas provided in the RAM 75 for each sensitive material stored in the image recording apparatus 100. The width signal 76 is stored and inputted to the control means. The width signal 76 output from the arithmetic unit 70
The sub-scanning direction of the photosensitive material 1 is displayed by the control means 141 when the width dimension of the photosensitive material 1 stored in the storage body is displayed on the display means 142 or when recording is performed by changing the recording magnification. Used as basic data when recording an image on the photosensitive material 1 at a specified magnification by changing the conveyance speed of
The recorded dimension and the width dimension information of the photosensitive material 1 are compared and calculated, and can be used as calculation information for determining whether the recorded photosensitive material 1 has an appropriate width dimension.

As described above, by storing the photosensitive material 1 in the storage body, the width information of the photosensitive material 1 automatically stored in the image recording apparatus 100 can be obtained. Various controls are performed, such as outputting an abnormal signal and stopping image recording when the size of the container is selected or when the selected magnification is such that the image does not fit on the photosensitive material 1. be able to.

Further, in the above-described embodiment, the case where the storage portion of the photosensitive material 1 is attached to the image recording apparatus 100 as the storage body 150 independent of the image recording apparatus 100 has been described.
The storage section 150 for the sensitive material 1 includes the sensitive material storage sections 150a, 150
b provided in the image recording apparatus 100, the photosensitive material storage unit 15
The photosensitive material held by the photosensitive material holding means may be housed in 0a and 150b. In this embodiment, the storage body 1
Although description has been made by using two types of 50, the number of storage bodies is not limited to two, and three or more types of storage bodies may be provided to perform the switching process.

Further, the detection means 7 has been described by taking as an example the one provided with two sets of detection means corresponding to two kinds of widths of the photosensitive material, but the number of detection means is not limited to two sets, and it can be accommodated. Two or more sets of detection means may be provided corresponding to the width of the photosensitive material 1.

[0078]

According to the first aspect of the present invention, the image recording apparatus is provided with a container for accommodating the roll-shaped photosensitive material, and the roll-shaped photosensitive material is held from both side surfaces in the container. -Sensitive material holding means having a pair of left and right flanges arranged in a predetermined positional relationship with the end portions on both side surfaces of the photosensitive material, a detecting means for detecting the flange position of the sensitive material holding means, and The detection signal output means for outputting the detected signal to the control means and the detection signal input from the detection signal output means
Since a calculation unit that calculates the width of the photosensitive material is provided, even if the photosensitive material cannot be used with optical sensors or micro switches, it will be The width of the sensitive material can be detected without any influence, and the width of the sensitive material can be continuously detected even when the roll-shaped sensitive material is stationary in the housing.

In the invention described in claim 2, claim 1
Since the detecting means described in (1) is composed of a magnetic body provided on the flange of the sensitive material holding means and a magnetic sensor arranged on the housing facing the outer peripheral surface of the flange, the flange position does not contact, It is possible to detect without emitting light, and there is no adverse effect on the surface of the roll-shaped photosensitive material.

In the invention according to claim 3, the invention according to claim 1
Since the detection means is a micro switch that detects the outer peripheral surface position of the flange by contacting the outer peripheral surface of the flange of the photosensitive material holding means, the flange position can be detected in a non-contact and non-emission manner, Even if an inexpensive micro switch is used as the detecting means, the sensitive material is not adversely affected.

[Brief description of drawings]

FIG. 1 is a sectional view of an image recording apparatus embodying the present invention.

FIG. 2 is a sectional view showing a state in which a sensitive material holding means holds a sensitive material.

[Fig. 3] Front view of the sensitive material

[Figure 4] Side view of sensitive material

FIG. 5 is a perspective view of a state in which the photosensitive material holding means holds the photosensitive material 1.

FIG. 6 is a cross-sectional view showing a state in which a sensitive material 1 having a short width is held by a sensitive material holding means on one side in a storage body.

FIG. 7 is a side view of the storage body in FIG.

FIG. 8 is a cross-sectional view showing a state in which the sensitive material 1 having a long width is held in the storage body with one side as a reference.

9 is a side view of the storage body of FIG.

FIG. 10 is a cross-sectional view of a flange 2B having an outer peripheral surface coated with a coating material mixed with a magnetic material.

FIG. 11 is an enlarged sectional view of a magnetic coating portion on the outer peripheral surface of the flange 2B.

FIG. 12 is a flange 2B provided with a thin magnetic material on the outer peripheral surface.
Cross section of

FIG. 13 is a sectional view of a flange 2B having a magnetic material embedded therein.

FIG. 14 is a cross-sectional view in which the center of the photosensitive material 1 having a short width is held as a reference in the center of the container.

FIG. 15 is a cross-sectional view in which the center of the sensitive material 1 having a long width is held as a reference in the center of the container.

FIG. 16 is a block diagram of a calculation unit 70 that calculates a photosensitive material width.

FIG. 17 is a schematic diagram of a conventional technique in which the width of a sensitive material is detected by a micro switch.

FIG. 18 is a schematic diagram of a conventional technique in which the width of a photosensitive material is detected by an optical sensor

[Explanation of symbols]

 1 Roll-Sensitive Material 2 Flange 3 Magnetic Material 4 Support Shaft 5 Bearing 7 Detection Sensor 11 Paper Tube Holding Section 15 Paper Tube 16 Sensitive Material Holding Means 70 Calculation Section 71, 72 Detection Signal 73 CPU 74 ROM 75 RAM 76 Width Signal 100 Image Recording Device 120 Image Input Unit 130 Image Recording Unit 140 Image Processing Unit 141 Control Means 142 Display Means 150 Housing

Claims (3)

[Claims] 1. An image recording apparatus comprising a control means for switching and controlling a transport system path, a transport speed, etc. of a plurality of roll-shaped photosensitive materials having different width dimensions housed in the apparatus body. Is a container for accommodating the roll-shaped sensitive material, holds the roll-shaped sensitive material from both side surfaces in the storage body, and has a predetermined positional relationship with both side end portions of the roll-shaped sensitive material. Sensitive material holding means composed of a pair of left and right flanges arranged in the above, detecting means for detecting the flange position of the sensitive material holding means, and detection signal output means for outputting the signal detected by the detecting means to the control means. And the control means,
An image recording apparatus comprising: an arithmetic unit for calculating a width of a sensitive material of a roll-shaped sensitive material from a detection signal input from a detection signal output means. 2. The image recording apparatus according to claim 1, wherein the detection means includes a magnetic body provided on the flange, and a magnetic sensor arranged on the storage body so as to face the outer peripheral surface of the flange. An image recording apparatus, which detects a position of an outer peripheral surface of a flange. 3. The image recording apparatus according to claim 1, wherein the detecting means is a micro switch that contacts the outer peripheral surface of the flange and detects the position of the outer peripheral surface of the flange.