JPH03131856A - Image recorder - Google Patents

Abstract

PURPOSE:To easily take out an image recording material when the carry of the image recording material is interrupted with the occurrence of jam, power interruption, etc., by carrying the image recording material by a length where it can be taken out and cutting it at the length when the carry of the image recording material through the use of a second carrying means is interrupted. CONSTITUTION:First carrying means 17 and 18 carry the wound image recording material 16, and measuring means 19 and 23 measure the length of the carried image recording material 16. A cutter 20 cuts the carried image recording material 16 into a prescribed length. The second carrying means 24 and 26 carry the cut image recording material 16; when the carry of the image recording material 16 through the use of the second carrying means 24 and 26 is interrupted, a control means 190 controls the first carrying means 17 and 18 and the cutter 20 based on the information of the measuring means 19 and 23 so that the image recording material 16 is carried by the length where it can be taken out and is cut at the length. Thus, when the carry of the image recording material is interrupted by jam, power interruption, etc., the recording material 16 can be easily taken out.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an image recording apparatus, and more particularly to an image recording apparatus that records an image by cutting a wound image recording material into a predetermined length.

"Prior art and problems to be solved by the invention" Conventionally, a photosensitive material '#J, = image receiving material is used as an image recording material, and an image exposed on the photosensitive material is transferred to the image receiving material by thermal development transfer. An image recording device is known. This image recording device is provided with a photosensitive material magazine case for storing a photosensitive material magazine and a receiving material magazine case for storing a receiving material magazine, which are detachably attached to the main body. The photosensitive material magazine stores the wound photosensitive material, and the receiving material magazine stores the wound image receiving material.In addition, each magazine case holds each material between the magazines. A nip roller is arranged as a first conveying means for pulling out the magazine from the magazine case and carrying it out of each magazine case.At a position corresponding to the exit side of each nip roller of the main body of the image recording apparatus,
Each is provided with a cutter. The material carried out by the nip roller is cut into a preset length by a cutter, and is sent to an exposure and thermal development transfer section by a conveyance roller serving as a second conveyance means, where it is subjected to exposure and thermal development transfer processing.

Further, in this image recording apparatus, if a jam occurs while the photosensitive material is being carried out from the magazine case, the leading end of the photosensitive material is exposed to light in order to perform door oven and jam removal. Therefore, the exposed portion of the photosensitive material must be cut and removed.

However, if the length of the photosensitive material carried out is shorter than a predetermined length (the length that can be taken out), there is a problem in that it becomes difficult to take out the photosensitive material.

Furthermore, if both image recording devices are stopped for a long time due to power cutoff, the portions of the photosensitive material or image receiving material that are pressed by the nip rollers will deteriorate and become unusable.

In this case as well, the deteriorated portion of the photosensitive material or image-receiving material must be cut and removed.

However, if the length of the photosensitive material or image-receiving material that has been carried out is shorter than a predetermined length (length that can be taken out), there is a problem in that it becomes difficult to take out the photosensitive material or image-receiving material.

The present invention has been made to solve the above problems,
It is an object of the present invention to provide an image recording device which allows the image recording material to be easily taken out when the conveyance of the image recording material is interrupted due to a jam or a power cut.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a first conveyance means for conveying out the wound image recording material, and a method for measuring the length of the image recording material that has been conveyed out. a cutter that cuts the conveyed image recording material into a predetermined length; a second conveyance means that conveys the cut image recording material; and a mechanism that interrupts conveyance of the image recording material by the second conveyance means. and a control means for controlling the first conveying means and the cutter so as to carry out and cut the image recording material to a removable length based on information from the measuring means when the image recording material is removed.

[Function] The first conveyance means pulls out and carries out the wound image recording material. The measuring means measures the length of the unloaded image recording material. The cutter cuts the image recording material carried out by the first conveyance means into a predetermined length. The second conveying means conveys the image recording material cut by the cutter. The control means controls the first conveyance means and the cutter so that when conveyance of the image recording material by the second conveyance means is interrupted, the image recording material is conveyed and cut to a removable length based on information from the measuring means. do.

In this way, when the conveyance of the image recording material by the second image recording material conveying means is interrupted, the image recording material is carried out and cut to a length that can be taken out, so that the image recording material with a short length is cut. The cut pieces of the image recording material are not left behind in the image recording device, and the cut image recording material can be easily taken out.

Cases in which the image recording material unloading process may be interrupted include when a jam occurs in the image recording material, when the power is cut off, or when the door is opened after cutting while paper is being fed. Therefore, it is preferable to perform the above-mentioned unloading and cutting process when at least one of these conditions is satisfied.

[Effects of the Invention] As explained above, according to the present invention, when the conveyance of the image recording material by the second conveying means is interrupted, the image recording material is conveyed and cut to a length that can be taken out. The effect is that the image recording material can be easily taken out in the event that the conveyance of the image recording material is interrupted due to a jam, a power cut, or the like.

[Embodiment] FIG. 2 shows a schematic overall configuration diagram of an image recording apparatus 10 to which the present invention is applicable.

A photosensitive material magazine case 15 for storing a photosensitive material magazine 14 is disposed to be detachably attached to the machine base 12 of the image recording apparatus IO. In the photosensitive material magazine 14, a photosensitive material 16 is wound into a roll and stored. The photosensitive material 16 is a support coated with photosensitive silver halide, a binder, a dye-donating substance, and a reducing agent, and is photosensitive (exposure).
It is wound with the surface facing inward. The photosensitive material magazine case 15 houses a nip roller 18 for nipping the photosensitive material 16 on the photosensitive material output side of the photosensitive material magazine 14 and pulling it out from the photosensitive material magazine 14. As shown in FIG. 3, this nip roller 18 is connected by a belt 21 to a pulley fixed to the shaft of a motor 17 as part of the first conveying means. A rotary encoder 19 as part of the measuring means is connected to the shaft of the motor 17.

A cutter 20 is disposed on the exit side of the nip roller 18 as part of the first conveyance means of the machine stand 12 . An exposure section 22 is arranged downstream of the cutter 20. A conveyance roller 24 and a conveyance roller 26 as part of the second conveyance means are arranged on both sides of the exposure section 22 in the conveyance direction. In this exposure section 22, a tip detection sensor 23 is arranged as another part of the measuring means for detecting passage of the tip of the photosensitive material 16. The tip detection sensor 23 is composed of a light emitting element and a light receiving element arranged to sandwich a conveyance path therebetween. Further, a guide plate 28 is disposed between these conveyance rollers 24 and 26, and an exposure surface glass 3D is disposed at a position facing the guide plate 28 across the conveyance path. The photosensitive material 16 is held between the guide plate 28 and the exposure glass 30, becomes flat, and passes between both conveyance rollers while its deformation is corrected. On the opposite side of the exposure section 22 from the photosensitive material magazine case 15, there is provided a reversing section 34 that includes a flapper 36 and a loop-shaped conveyance path, and the photosensitive material 16 passes through the exposure section 22 and then returns to the reversing section 3.
4, and transported to the exposure section 22 again.

An exposure optical system 38 is provided above the exposure section 22. The exposure optical system 38 includes a light source 40, movable mirrors 42A, 4
2B, a plurality of fixed mirrors 44, a rotating mirror 46, and a lens unit 48. A document placement plate 50 made of glass is provided on the top of the machine stand 12. Further, a slit plate 52 serving as an aperture is arranged on the movable mirror 42B side of the lens unit 48, and a color adjustment filter (CC filter) is arranged inside the lens unit 48.

The light source 40, movable mirrors 42A, 42B, and lens unit 48 are movable along the original plate 50. The light source 40 and the moving mirror 42A move at twice the moving speed of the moving mirror 42B and the lens unit 48, so that no optical path difference occurs during movement. As a result of this movement, the original 54 placed on the original placing plate 50 is irradiated with light, and the reflected light is irradiated via the plurality of fixed mirrors 44, thereby exposing the photosensitive material 16 located in the exposure section 22. Scanning exposure is performed.

The rotating mirror 46 is arranged so that it can enter into or leave the optical path of the image light irradiated onto the exposure 822 via the moving mirrors 42A, 42B and the fixed mirror 44 by rotating. When the rotating mirror 46 enters the optical path, the light reflected by the rotating mirror 46 is incident on the light detection sensor 56 . The light detection sensor 56 is
Exposure conditions are set by measuring the image density of the original 54 and adjusting the color adjustment filter and the aperture slit plate 52 based on the measured value.

A cooling fan 58 is arranged above the photosensitive material magazine case 15. The cooling fan 58 cools the exposure section 22 to a temperature of 40.degree. C. (preferably 35.degree. C. or lower) and prevents the temperature of the document surface from rising.

A flapper 37 is arranged between the conveyance roller 24 and the cutter 20 in the exposure section 22.
An inversion section 60 is arranged below. Also, on the opposite side of the reversing section 60 from the photosensitive material magazine case 15 and at the opposite side of the reversing section 3
A water application section 62 is arranged below 4. The photosensitive material 16 scanned and exposed in the exposure section 22 is transferred to the flapper 37.
is conveyed to the reversing section Go by switching upward,
After being reversed in the reversing section 60, the conveying roller 29.31.3
3.35, it is transported to the water application section 62. A squeeze roller 68 is disposed on the exit side of the water application section 62 to remove excess water from the water-applied photosensitive material 16. A thermal development transfer section 104 is provided on the exit side of the squeeze roller 68.
is located.

On the other hand, a receiving material magazine case 107 that accommodates a receiving material magazine 106 is disposed below the photosensitive material magazine case 15 so as to be detachable from the machine base 12 . Receiving material magazine 1
06 stores an image receiving material 108 wound into a roll. The width direction dimension of the image receiving material 108 is the same as that of the photosensitive material 1.
6, and the image forming surface is coated with a dye fixing material containing a mordant. The receiving material magazine case 107 holds an image receiving material 108 on the receiving material outlet side of the receiving material magazine 106 and stores the receiving material magazine 106 therein.
A nip roller 110 for pulling out from the container is housed. This nip roller is rotated by a motor (not shown).

On the downstream side of the cutter 112, an image receiving material tip detection sensor 1 is provided.
15 and the cut image-receiving material 108 are transferred to the thermal development transfer section 10.
A plurality of transport rollers 114 are arranged to transport the paper to the paper.

The thermal development transfer section 104 is provided with a heating drum 116 and an endless pressure belt 118, and a bonding roller 120 is arranged on the outer periphery of the heating drum 116 on the water application section 62 side.

Also, between the bonding roller 120 and the squeeze roller 68 of the water application section 62, there is a space between the back side (the side opposite to the image forming side) of the photosensitive material 16 conveyed by the squeeze roller 68.
A guide plate 122 for guiding the photosensitive material 16 to the bonding roller 120 is arranged correspondingly. Guide plate 12
2 has irregularities formed on its surface by embossing, thereby reducing friction between the guide plate 122 and the photosensitive material 16 coated with water.

On the other hand, a blade guide 124 is arranged between the bonding roller 120 and the conveyance roller 114 to guide the image receiving material 108 conveyed by the conveyance roller 114 to the bonding roller 120. The surface of the blade guide 124 is treated with Teflon (trade name) (or a Teflon coating is pasted on it) to improve sliding on the image receiving material 108 and prevent it from being scratched.

The bonding roller 120 is constituted by a so-called crown roller having an outer diameter of about 29 mm at the center in the axial direction, and the outer peripheral surface is coated with silicone rubber.

Further, this bonding roller 120 is pressed against the outer periphery of the heating drum 116 by applying a pressing force of approximately 15 kgf to both ends thereof.

The heating drum 116 is made of a thin-walled aluminum pipe, and in this embodiment has a wall thickness of 2 mm, an outer path of 156 mm, and an effective axial width of 350 mm. The surface of the heating drum 116 is treated with Teflon, and the inner peripheral surface is coated with black heat-resistant paint.

A pair of halogen lamps 1 are installed inside the heating drum 116.
32A and 132B are arranged. halogen lamp 1
32A and 132B are approximately 800W and 400W, respectively.
W output, and raises the temperature of the surface of the heating drum 116 to approximately 78°C. In this case, two halogen lamps 132A are used at the start of temperature rise.

132B are both lit, and then during normal operation, It
Only the 800'vV halogen lamp 132A is lit.

An endless pressure belt 1 that is pressed against the outer periphery of the heating drum 116
18 is constructed by covering a woven fabric material with rubber. The woven material is sewn from heat-resistant fibers such as aromatic polyamide fibers (for example, Kevlar or Nomex, both registered trademarks of DuPont), and monofilament fibers are used in the width direction of the belt. Improved rigidity in the width direction. Further, the covering rubber is made of carbon-containing silicone rubber and has electrical conductivity.

This endless pressure belt 118 is wrapped around four rollers 1
It is wrapped around 34.136.138.140,
A portion of the pressure belt 118 between the roller 134 and the roller 140 is pressed against the outer periphery of the heating drum 116 .

Rollers 134, 136, and 138 are made of aluminum,
Flange portions for preventing the belt from shifting are formed at both ends in the axial direction. In addition, at both longitudinal ends of the roller 136, a pressing force of 2.5 kgf (practical range: 0.5 to 3.0 kgf) is applied to the heating drum 1.
16, thereby applying a predetermined tension to the endless pressure belt 118.

On the other hand, the winding roller 140 is composed of a rubber roller, and a motor (not shown) serving as a driving source is connected to its rotating shaft. Therefore, the winding is done by the roller 140.
When the roller 140 is rotated by the motor, the endless pressure belt 118 wound around the roller 140 is rotated, and along with this, the heating drum 116 is driven by the frictional force between the endless pressure belt 118 and the heating drum 116. rotated. When the heating drum 116 rotates, the bonding roller 1 disposed in pressure contact with the outer periphery of the heating drum 116
20 similarly rotate together due to frictional forces.

Furthermore, in this case, the squeeze roller 68 and the conveying roller 10
The conveyance speed of the photosensitive material 16 or the image receiving material 108 is set to be about 2% slower due to the transfer speed of the photosensitive material 16 or the image receiving material 108 due to the transfer speed of the photosensitive material 16 or the image receiving material 108 . act. Note that the squeeze roller 68 and the conveyance roller 11
A one-way clutch (not shown) is attached to the drive shaft 4, thereby maintaining a predetermined tension.

Further, the leading end of the image-receiving material 108 is conveyed between the heating drum 116 and the bonding roller 120 in synchronization with the conveyance of the photosensitive material 16, and the photosensitive material 16 is advanced by a predetermined length (approximately 20 mm in this embodiment). In this state, the sheets are fed between the bonding roller 120 and the heating drum 116 and overlapped.

The photosensitive material 16 and the image-receiving material 108 which have been superimposed by the bonding roller 120 are placed between the heating drum 116 and the endless pressure belt 118 while remaining in the superimposed state. roller 134
and the wound portion is conveyed while being held between the rollers 140). When the photosensitive material 16 is heated during this nip conveyance, it releases a mobile dye, and at the same time, this dye is transferred to the image receiving material 1.
The image is transferred to the dye fixing layer No. 08 to obtain an image.

A bending guide roller 142 and a peeling claw 154 are arranged below the heating drum 116 on the downstream side of the endless pressure belt 118 in the material supply direction. Of the photosensitive material 16 and image-receiving material 108 that are sandwiched and conveyed between the endless pressure belt 118 and the heating drum 116, the peeling claw 154 engages only the leading end of the photosensitive material 16 that is overlapped with a predetermined length ahead. The leading end portion is peeled off from the outer periphery of the heating drum 116, and the bending guide roller 142 wraps and guides the peeled photosensitive material 16.

A cutter 180 for cutting the photosensitive material 16, a waste photosensitive material passage sensor 181, and a waste photosensitive material storage box 178 are arranged below the peeling claw 154,
The photosensitive material 16 peeled off from the outer periphery and separated from the image receiving material 108 is cut into pieces by a cutter and accumulated in a waste photosensitive material storage box 178.

A drying fan 182 that blows air to dry the image-receiving material 108 is arranged on the side of the peeling claw 154.

A peeling roller 174 and a peeling pawl 176 are arranged above the peeling pawl 154 and near the heating drum 116 to peel off the image receiving material 108 that is separated from the photosensitive material 16 and moves together with the heating drum 116 from the outer periphery of the heating drum 116. It has become. The peeled image receiving material 10g is transferred to the tray 184.
accumulated on top.

Next, the operation of the image recording apparatus will be explained. The photosensitive material 16 pulled out from the photosensitive material magazine 14 by the nip roller 18 is cut into a predetermined length by the cutter 20, passes through the exposure section 22, and is conveyed toward the flapper 36. The flapper 36 transfers the photosensitive material 16 to the flapper 3.
6 to the transport path located above. The guided photosensitive material 16 is reversed at the reversing section 34 and transferred to the exposure section 2.
2. When the photosensitive material 16 is nipped by the conveying roller 26, the driving of the conveying roller 26 is temporarily stopped, and the photosensitive material 16 is placed in a standby state immediately before the exposure section 22.

On the other hand, while the photosensitive material 16 is being conveyed, a pre-scan of the original 54 is performed. That is, first, as the light source 40 moves, the reflection mirror 46 enters the optical path and changes the image density of the image on the original 54 (in other words, whether the image on the original 54 is like a printed original or a photographic original). ) is measured, and the color adjustment filter and the aperture slit plate 52 are adjusted based on this measured value.

Next, the reflection mirror 46 is removed from the optical path, and the light source 40, movable mirrors 42A, 42B, and lens unit 48 are returned to the home position (image scanning start position).

Here, the driving of the conveyance roller 24 and the conveyance roller 26 is started again, and the photosensitive material 16 is moved around the exposure section 22 at approximately IQ.
It passes at a speed of Qmm/sec. This photosensitive material 1
At the same time as passing through the exposure section 22 of No. 6, the light source 40, movable mirrors 42A, 42B, and lens unit 48 are moved along the document placement plate 50, and the photosensitive material 16 is scanned and exposed. In this case, since the exposure section 22 is forcibly cooled by the cooling fan 58, exposure failures due to temperature rise will not occur.

When the exposure starts, that is, the driving of the transport rollers 24 and 26 is resumed, the flapper 37 is switched upward, and the exposed photosensitive material 16 is thereby transported to the reversing section 60.

After the photosensitive material 16 is reversed in the reversing section 60, it is transferred to the water application section 6.
Sent to 2.

In the water application section 62, water as an image forming solvent is applied to the photosensitive material 16, and excess water is removed by a squeeze roller 68. The photosensitive material 16 coated with water as an image forming solvent in the water coating section 62 is sent to the thermal development transfer section 104 by a squeeze roller 68 .

On the other hand, the image receiving material 108 is also pulled out from the receiving material magazine 106 by the nip roller 110, and is further pulled out by the cutter 112.
After the photosensitive material 16 is cut into a length shorter than the photosensitive material 16, it is transported by a transport roller 114 to the thermal development transfer section 1.
Sent to 04.

Further, after cutting, the nip by the nip roller 110 is released, and deformation of the leading end (image forming surface) of the image receiving material 108 due to being nipped for a long time is prevented.

Here, the image-receiving material 108 is conveyed to the thermal development transfer section 104 in synchronization with the conveyance of the photosensitive material 16, and the bonding roller 120 is moved with the photosensitive material 16 leading by a predetermined length (approximately 20 mm in this embodiment). and heating drum 11
6 and are superimposed.

In this case, the bonding roller 120 and the water application section 62
A guide plate 70 is disposed between the squeeze roller 68 and the photosensitive material 1 sent from the squeeze roller 68.
6 is reliably guided to the bonding roller 120. Further, a blade guide 124 is arranged between the bonding roller 120 and the conveying roller 114 for the image receiving material 108, so that the image receiving material 108 is also securely transferred to the bonding roller 120.
You will be guided to.

Pasting roller 120 precedes image receiving material 108
After the tip of the photosensitive material 16 that has been guided is sandwiched between the bonding roller 120 and the heating drum 116, the speed at which the photosensitive material 16 is pinched and conveyed by the heating drum 116 and the bonding roller 120 (in other words, the heating drum 1
Since the conveyance speed of the photosensitive material 16 by the squeeze roller 68 is set to be about 2% slower than the rotational movement speed of the outer circumferential surface of the photosensitive material 16, back tension acts on the photosensitive material 16, causing it to loosen. There is no.

Next, when the leading end of the image-receiving material 108 guided to the bonding roller 120 reaches the pressure contact point between the bonding roller 120 and the heating drum 116, it is sequentially overlapped with the photosensitive material 16. In this case as well, since the conveying speed of the image receiving material 108 by the conveying roller 114 is set to be slower than the nipping conveying speed of the image receiving material 108 by the heating drum 116 and the bonding roller 120, pack tension is applied to the image receiving material 108. It works without causing any slack.

Therefore, the photosensitive material 16 and the image-receiving material 108 are uniformly overlapped without wrinkles.

Moreover, the tension acting on the photosensitive material 16 and the image receiving material 108 is maintained at a predetermined value by the one-way clutch attached to the drive shafts of the squeeze roller 68 and the conveying roller 114, so that excessive tension may cause the photosensitive material 16 and the image receiving material to Material 108 is not damaged or becomes untransportable.

Furthermore, in this case, since the image-receiving material 108 is smaller in width and length than the photosensitive material 16, all four sides of the photosensitive material 16 protrude from the periphery of the image-receiving material 108. are superimposed on each other.

The photosensitive material 16 and the image-receiving material 108 which have been superimposed by the bonding roller 120 are placed between the heating drum 116 and the endless pressure-welding bell [18] while remaining in the superimposed state. is held and conveyed between rollers 134 and 140).

When the photosensitive material 16 is heated during this nipping and conveying,
A mobile dye is released and at the same time this dye is transferred to the image receiving material 10.
The image is transferred to the dye fixing layer No. 8 to obtain an image.

In this case, the photosensitive material 16 and the image-receiving material 108 are overlapped uniformly without wrinkles, and the peripheral portion of the photo-sensitive material 16 protrudes from the peripheral portion of the image-receiving material 108 on all four sides and extends to the outer periphery of the heating drum 116. Since they are in close contact with each other, a predetermined pressure can be applied without each material shifting during conveyance, and a high-quality image without image unevenness can be obtained.

Furthermore, since the endless pressure belt 118 is connected to the motor and is directly and forcibly rotated by the roller 140, the winding has a large bending ratio (and is bent at multiple points). The heating drum 116 also rotates at a predetermined speed.Furthermore, since the heating drum 116 has low resistance to the rotational driving force and is in pressure contact with the endless pressure belt 118 over a wide range, the rotational force from the endless pressure belt 118 is transmitted through friction. (a part of the rotational force is transmitted without being lost).For this reason, the endless pressure welding belt 118
There is no difference in rotational speed between the heating drum 116 and the heating drum 116. Therefore, the photosensitive material 16 sandwiched and conveyed by the endless pressure belt 118 and the heating drum 116
Shearing force is generated between the image-receiving material 108 and the two materials, and a good image can be obtained without causing transfer misalignment.

Furthermore, since the endless pressure contact belt 118 is electrically conductive, generation of static electricity due to friction between the heating drum 116 and the endless pressure contact belt 118 or the photosensitive material 16 or the image receiving material 108 is prevented, and an image obtained on the image receiving material 108 is prevented. There is also no fogging.

Thereafter, when the photosensitive material 16 and the image-receiving material 108 are sandwiched and conveyed and reach the lower part of the heating drum 116, the image-receiving material 108
A peeling claw 154 engages with the leading end of the photosensitive material 16 that is conveyed a predetermined length ahead of the photosensitive material 16 , and peels the leading end of the photosensitive material 16 from the outer periphery of the heating drum 116 . Furthermore, the peeled photosensitive material 1G is wound around the bending guide roller 142 and bent downward, cut into pieces by the cutter 180, and accumulated in the waste photosensitive material storage box 178.

On the other hand, the image-receiving material 108, which is separated from the photosensitive material 16 and moves while remaining in close contact with the heating drum 116, is dried by the drying fan 182 while being separated from the heating drum 116 and its outer periphery by a peeling claw. 176 and then sent to a peeling roller 174. Further, here, the tray 184 is peeled off from the outer periphery of the heating drum 116 by the peeling roller 174 and the peeling claw 176.
accumulated on top.

FIG. 3 shows a block diagram of the control system of this embodiment. This control system also controls the exposure optical system described above, but since it is not directly related to the present invention, only the parts related to this embodiment are shown. Row reencoder 1
9 and the tip detection sensor 23 are connected to a microcomputer 190 as a control means. Microcomputer 190 is connected to motor 17 and cutter 20 via a driver (not shown). Note that the image-receiving material side has a similar configuration and is therefore omitted from illustration.

Also connected to the microcomputer 190 is a backup RAM 192, which is backed up by a lithium battery 194. Note that an EPROM may be used instead of the backup RAM 192.

Next, the control routine of the control system will be explained. Incidentally, since the same applies to the image-receiving material side, only the control routine on the photosensitive material side will be explained in the following control routine.

FIG. 7 shows a part of the main routine that is activated when the copy start switch of the image recording apparatus is turned on. Step 2 when the start switch is turned on
By rotating the motor 17 at 00, the photosensitive material is conveyed in the forward direction, that is, in the direction in which it is pulled out from the photosensitive material magazine case 15. When conveyance is started, a pulse is output from the rotary encoder 19. In the next step 202, it is determined whether or not the leading edge detection sensor 23 has detected the leading edge of the photosensitive material. When it is determined that the leading edge has been detected, the leading edge detection flag F is set in step 204, and in step 206, the leading edge detection flag F is set. The size pulse PAO value is calculated from the tip of the photosensitive material stored in the photosensitive material magazine case 15 to the Nox number Po corresponding to the length corresponding to the photosensitive material transport direction of the copy size set by the copy size setting switch. It is set to the sum of the number of pulses Ps corresponding to the transport path capacity up to the position where the detection sensor 23 is arranged.

FIG. 4 shows an interrupt routine that is interrupted by the rising edge of a pulse output from the rotary encoder. In step 210, the number of pulses P is incremented. In the next step 212, it is determined whether or not the photosensitive material is being conveyed in the forward direction, and if it is being conveyed in the forward direction, it is determined in step 214 whether or not the leading edge detection flag F is set. If flag F is reset, the process returns to the main routine; if flag F is set, the process returns to step 216.
At , it is determined whether the number of pulses P has become equal to or larger than the size pulse PA. When P<PA, the process directly returns to the main routine, and when P≧PA, the conveyance of the photosensitive material is stopped at step 218, and at the same time, the process returns to step 22.
At 0, a cutting signal is output and the cutter 20 cuts the photosensitive material. In the next step 222, the number of pulses P
The number of pulses PR corresponding to the distance β from the cutter 20 to the tip of the photosensitive material rewound and stored in the magazine case is set. This is because in this embodiment, the pulses are counted using the tip position of the rewound photosensitive material as the reference position (P=O), so immediately after cutting with the cutter, the tip of the photosensitive material is at a distance corresponding to the number of pulses PR. This is because it is equivalent to being transported.

In the next step, the leading edge detection flag F is reset, and in step 226, it is determined whether the photosensitive material has been cut by the number of copies set using the ten keys for setting the number of copies. When the number of cuts is equal to the set number of copies, the motor 17 is controlled in step 228 to transport the photosensitive material in the reverse direction, that is, in the rewinding direction.

Even when the photosensitive material is being transported in the unwinding direction, a pulse is output from the rotary encoder 19, and the routine shown in FIG. 4 is executed by an interrupt, so step 2
The number of pulses is counted at 10. Next step 212
Since it is determined that the object is being transported in the opposite direction, the process proceeds to step 230, where it is determined whether the number of pulses P has exceeded the predetermined value 2Pf. Immediately after cutting the photosensitive material, P=
PI! Therefore, the number of pulses when the photosensitive material is rewound by a distance l from the cutting position is 2PR. Therefore, 2Pl is set as the predetermined value. P≧2Pf
At this time, the leading edge of the photosensitive material is stored in the photosensitive material magazine case, so the conveyance of the photosensitive material is stopped in step 232, the count value P is set to 0 in step 234, and the rewinding completion flag is set. Set B. On the other hand, if P<2PR in step 230, the process directly returns to the main routine.

As a result, when the photosensitive material is cut a number of times equal to the set number of copies, the photosensitive material is rewound by the distance β and the leading end of the photosensitive material is stored in the photosensitive material magazine case.

FIG. 1 shows an interrupt routine that is activated by an interrupt when a jam occurs, and in step 240 it is determined whether the photosensitive material is being conveyed in the forward direction. When the photosensitive material is being transported in the reverse direction, the photosensitive material is being rewound, so the process returns to the main routine; when the photosensitive material is being transported in the forward direction, step 24 is performed.
In step 2, drive systems other than paper feeding are stopped, and in step 244
It is determined whether the number of pulses P is equal to or greater than the number of pulses P70 corresponding to a predetermined distance (for example, 70 mm). When P<P2O, the unwinding length is short and rewinding is possible, so the number of pulses is set to 2P in step 254.
After setting β-P, the motor 17 is controlled in step 252 so that the photosensitive material is rewound.

That is, when P<P2O, since the distance corresponding to the number of pulses P has already been carried out, it is sufficient to rewind the distance corresponding to the number of pulses P. If the number of pulses is set to 2PβP and the film is rewound a distance corresponding to the number of pulses, P=2PA with the tip stored in the photosensitive material magazine case, so the process proceeds from step 230 to step 232 in FIG. Rewinding is stopped.

On the other hand, when P≧P70, the length of the photosensitive material to be taken out is long, so in step 245 it is determined whether the number of pulses P has exceeded the length that can be taken out (for example, P140, 140 mm). When P<P 140, the process returns as is, and when P≧P140, the conveyance of the photosensitive material is stopped in step 246, and a cutting signal is output in step 247 to cut the photosensitive material, and in step 24
After setting the reference pulse number Pβ to the pulse number P in step 8, the leading edge detection flag F is reset in step 250, and the photosensitive material is transported in the reverse direction in step 251. Next, in step 253, the residual amount of the photosensitive material is displayed on a monitor provided in the operating section, for example.

As a result, the length of the photosensitive material remaining in the image recording device 10 is longer than the length that can be taken out, so that the image recording material can be easily taken out in the event that the removal of the photosensitive material is interrupted due to a jam. Can be done.

FIG. 5 shows an interrupt routine that is activated by an interrupt when the door oven or power supply is cut off.
PM) is stored in the backup RAM 192. As a result, even if the power is cut off, the length (PM) of the photosensitive material carried out into the image recording apparatus 10 is maintained at the backup RA.
It will be stored in M192.

FIG. 6 shows an interrupt routine that is activated by an interrupt when the door is closed or the power is turned on again.
In step 308, it is determined whether or not the rewinding completion flag B is set, and if it is determined that the rewinding completion flag B is set, the process returns. on the other hand,
If it is determined that the rewinding completion flag B has been reset, the backup RAM is
Let the carry-out length PM stored in 192 be the number of read pulses P. In step 311, the unloading length P is 14
It is determined whether or not it is 0 mm or more, and if P≧P140, the process advances to step 318. On the other hand, when the discharge length P<P 140, the discharge of the photosensitive material is started in step 314, and it is determined in step 316 whether the number of pulses P has become 2140 or more. If P<P 140, return directly; if P≧P140, proceed to step 31
At step 7, the conveyance of the photosensitive material is stopped, and at step 318, a cutting signal is output and the cutter 20 cuts the photosensitive material. After setting the reference pulse number Pβ to the pulse number P in the next step 320, step 322
In step 32, the tip detection flag F is reset.
4, the photosensitive material is transported in the opposite direction. Next, in step 326, the residual amount of the photosensitive material is displayed on a monitor provided in the operating section, for example.

As a result, when the door is closed or the power is turned on again, the length of the photosensitive material remaining in the image recording device 10 is longer than the length that can be taken out, so the removal of the sensitive/photographic material is interrupted when the door is closed or the power is turned on again. The image recording material can be easily taken out when the image recording material is removed.

Although the above description describes storage of the leading edge of the photosensitive material, it can be similarly applied to storage of the image-receiving material.Also, although the above description describes an image recording device using thermal development transfer, It can also be applied to devices that use image recording materials, such as facsimile machines.

[Brief explanation of the drawing]

FIG. 1 is a flowchart showing an interrupt routine due to the occurrence of a jam in an embodiment of the present invention, FIG. 2 is a schematic configuration diagram of an image recording apparatus to which the present invention can be applied, and FIG. 3 is a flowchart showing an example of the present invention applied to a photosensitive material supply section. FIG. 4 is a flowchart showing an interrupt routine caused by a rising pulse in the embodiment of the present invention.
FIG. 5 is a flowchart showing an interrupt routine due to door opening or power cut-off according to the embodiment of the present invention, FIG. 6 is a flowchart showing an interrupt routine due to door closing or power re-energization according to the embodiment of the present invention, and FIG. 3 is a flowchart showing part of the main routine of the embodiment. 17... Motor, 18... Nip roller, 19 Red 4, Pulse encoder, 20... Cutter, 23, 24, 90 92 94 - Tip detection sensor, 6... - Conveyance roller, - Microcomputer, -・Backup RAM. ··Lithium battery.

Claims (1)

[Claims] (1) A first conveyance means for carrying out the wound image recording material, a measuring means for measuring the length of the carried out image recording material, and a cutting means for cutting the carried out image recording material into a predetermined length. a cutter for transporting the cut image recording material; and a second cutter for transporting the cut image recording material.
a first conveying means and a cutter configured to carry out and cut the image recording material to a removable length based on information from the measuring means when conveyance of the image recording material by the second conveying means is interrupted; An image recording device comprising: a control means for controlling the .