JPS61131962A - Picture recorder - Google Patents

Abstract

PURPOSE:To attain a recorder whose carrying path differs depending on the reception and discharge of a recording sheet by turning a drum in a different turn in direction depending on the reception of the recording sheet by a supply roller and the ejection of the recording sheet by a discharge roller. CONSTITUTION:A recording sheet is extracted from a supply magazine 30, supply rollers 51, 52, 53 are moved and the recording sheet is fed to a drum 32. When the tip of the recording sheet reaches a clip 64a of a tip chuck member 64, the recording sheet is stopped and pressed to the circumferential face of the drum 32 and the tip of the recording sheet is held. When the drum 32 starts turning counter clockwise (in the direction A), the recording sheet is wound to the circumferential face of the drum 32 by a pressing roller 98 while the tip is chucked and the tail end is chucked by a tail end chuck member 80. Then a signal is written on the recording sheet. When the write is finished, the motor is reversed, the tail end of the recording sheet is released, the recording sheet is moved toward a guide plate 34 and clipped by the discharge rollers 35, 36 and then fed to a storage magazine 38.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an image recording device that records an image on a recording sheet such as a silver halide film on a drum using a light beam modulated by an image signal. be.

[Prior Art] Conventionally, in this type of apparatus, as shown in FIG. 13, recording sheets S stored in a supply magazine 2 are taken out one by one from one side of a drum l by a sheet take-out device 3. and insert it into the feeding roller 4. Then, this recording sheet S is sent to the drum 1 via the guide plate 5 by the feeding roller 4, and is brought into contact with the drum 1 which is rotating at a constant speed, so that the recording sheet S is moved at a constant speed and laser beam scanning is performed. The image is recorded by. On the other hand, a laser beam emitted from a laser light source 6 is optically modulated by an optical modulator 7, main-scanned by a galvanometer mirror 8, and further scanned by a lens 9. Mirror 10. Recording is performed by projecting the light onto the recording surface of the drum 1 via the LL. The recording sheet S on which recording has been completed is stored in the storage magazine 14 via the guide plate 12 and the discharge roller 13, and transported to the developing machine by one operator, or is transported to an extension of the conveyance path without passing through the storage magazine 14. The recorded image is developed by being sent directly to the developing machine located above.

Here, when recording is being performed on the recording sheet S with the circumference of the drum L, the rear end of the recording sheet S is kept away from the feeding roller 4 to prevent uneven feeding. In addition, its tip must be in a state where it is not bitten by the discharge roller 13. Therefore, the beam scanning surface that houses the laser beam scanning line between the recording position on the drum l and the mirror 11 is used as the boundary surface. It is necessary to provide a space corresponding to at least the length of the recording sheet S between the feed roller 4 on the entrance side and the discharge roller 13 on the exit side. The supply magazine 2 and the storage magazine 14 are arranged oppositely on both sides of the boundary surface. This has the disadvantage that the operability for attaching and detaching the magazine 2.14 becomes worse and the overall height or length of the device increases.
It must be arranged so as to avoid the operation part 4, and a complex arrangement is required in which the optical system straddles both sides of the interface.

The first possible means of improving operability is
In FIG. 3, the storage magazine 14 is placed on the side of the supply magazine 2, and the recording sheets S are stored in the storage magazine 14 by reversing the rollers 4 and 13 and the drum l. In FIG. 13, the distance between the roller 4.13 and the drum L is longer than the length of the recording sheet S, and as it is, it is impossible to feed it against gravity, so an auxiliary feeding means is required, and one mechanism For recording sheets S that inevitably become complicated and have different lengths in the feeding direction, it is necessary to balance the stability of feeding before and after recording with the stability of rotation of the drum l during recording. becomes even more difficult.

As an example of winding the recording sheet S around the drum L, an example shown in Figure 1 is disclosed in Japanese Patent Application Laid-Open No. 59-103466 as an inkjet recording apparatus, although this is slightly different from the field of the present invention.

In this example, the recording sheet S taken out from the supply magazine 2 passes through the supply roller 4 and is wound around the drum l. Then, while the recording sheet S rotates together with the drum 1, recording is performed by the inkjet head 15, and the recording sheet S after recording is discharged by the discharge roller 13.

In this device, the rotation of the drum 1 performs main scanning, and the movement of the inkjet header 15 performs sub-scanning. 148th? If the drum rotation structure shown in i is utilized in the sub-scanning section shown in FIG. 13, the rollers 4.13 can be placed near the drum l, thereby avoiding the drawback that the drum section becomes large. Furthermore, since the recording sheet S enters and is ejected from the drum section using rollers on different sides, it is easy to organize the feeding traffic. However, in the drum rotation structure shown in FIG. 814, the size of the recording sheet S is limited to one type. In addition, the end surface when the recording sheet S enters the drum section and the end surface when it is ejected from the drum section are the same, and the storage magazine is placed almost parallel to the supply magazine 2 on the extension of the ejection path shown in FIG. When placed, is the recording sheet S the supply magazine? The front and back sides of the recording sheet S are reversed when it is inside the storage magazine and when it is inside the storage magazine.

When a silver halide film coated with emulsion on one side is used as the recording sheet S, when taking out the silver halide film from the supply magazine 2 to the drum section, and when putting the storage magazine into the developing machine, When taking out the silver halide film into the developing tank, the suction power of the vacuum suction cup is mainly used. In this case, in order to prevent suction marks from adhering to the silver halide film, it is necessary to keep the emulsion side of the silver halide film on the bottom side in both the supply magazine 2 and the storage magazine. The drum rotation structure shown in Figure yJ14 above is shown in Figure 13.
This relationship cannot be satisfied with the device used as the sub-scanning section in the figure.

[Object of the Invention] The object of the present invention is that the conventional device has a large overall height or length;
This eliminates the disadvantage of poor operability, makes effective use of space, prevents the front and back sides of recording sheets from being reversed during feeding and ejection, and provides an image recording device with good operability. It is about providing.

[Summary of the Invention] The gist of the present invention for achieving the above-mentioned object is to provide an apparatus for recording an image on a recording sheet wound on a drum using a light beam modulated, the recording sheet being a supply system having a supply roller that sends out the recording sheet to the drum; a drum system that winds a recording sheet around the drum and performs sub-scanning during recording by rotating the drum; and a drum system that discharges the recording sheet after recording has been completed. a storage system having a discharge roller; the drum rotates in different directions when the supply roller receives the recording sheet and when the discharge roller discharges the recording sheet; This image recording apparatus is characterized in that the conveyance path is different depending on when the paper is ejected and when it is ejected.

[Embodiment 1 of the Invention The present invention will be explained in detail based on the embodiment illustrated in FIGS. 1 to 12.

The system configuration of an application example of the present invention is as shown in FIG.
Control system 20. Supply system 21, drum system 22, storage system 23,
It also includes an optical scanner system 24. The control system 20 has a microprocessor and controls the operation of the entire system, and the supply system 21 mainly includes a supply magazine 30 for supplying recording sheets S and a sheet take-out machine Na31. The drum system z2 is centered around a drum 32 rotatable in four directions A and Bj, and supplies, writes images on, and ejects the recording sheet S. The optical scanner system 24 has a laser light source, a mirror 33, etc. (not shown). The storage system 23 is composed of a guide plate 34, discharge rollers 35, 36, a sheet pushing mechanism 37, and a storage magazine 38 placed parallel to the supply magazine 30.

What is important here is that both the supply system 21 and the storage system 23 exist independently, and the case where the recording sheet S is supplied to the drum 32 and the case where the recording sheet S is discharged from the drum 32 The difference is that the direction in which the recording sheet S contacts the drum 32 is different.

FIG. 2 is a side view of the drum system 22, and FIGS. 3 to 8 are structural diagrams of the recording sheet S feeding and discharging mechanism.

The drum 32 is disposed between fixed frames 40 and 40', and is rotatable via a drum shaft 41°41'' and a bearing 42.42°.
An encoder 43 for detecting the position of the drum 3 is attached to the shaft.
A balance weight 44.44'' is attached to the inner surface of drum 2 to balance the weight distribution. A pulley 45 is fixed to the drum shaft 41, and this pulley 45 and the writing motor An endless belt 48 is passed between the drive shaft 46 and a pulley 47 attached to the drive shaft.

A tin rocket 50 is attached to the drum shaft 41 via a clutch 49, and this sprocket 50, feeding rollers 51, 52, 53, and discharge rollers 35, 36 shown in FIG. A chain 59 driven by a winding electric motor 58 is attached. When the clutch 49 is turned on, the drum 32, the feeding roller 51, 52, 53
, the winding electric motor 58 is driven at the same time as the discharge rollers 35 and 36, and their circumferential speeds are the same.
The number of teeth of the sprocket 50 and the sprocket (not shown) of the roller group are selected. Furthermore, a detector 60 for detecting the recording sheet S is arranged at the feeding entrance to the drum 32, as shown in FIG.

In FIGS. 3 and 4, a tip chuck member 64 in the form of a spring-equipped hinge is attached to the drum 32 and has a length that allows pressure contact over the entire length of the drum 32.
The clamping portion 64 that clamps the
a is biased toward the circumferential surface of the drum 32 by a spring. The clamping portion 64a is opened at a predetermined position on the drum 32 by being released from the circumferential surface of the drum 32 by a tip opening lever 65. The tip is open and the 8-65 is rotatable around the shaft 66,
The pressing portion 65a at the tip of the tip opening lever 65 moves in a predetermined manner by the roller 67 attached to the tip opening lever 65 and the cam 69 pivoted on the camshaft 68, and this movement opens the clamping portion 64&. do.

A shaft 70 is provided near the pressing portion 65a, and a relay 8-71 is rotatably supported on this shaft 70 so as to be rotatable around the shaft 72, and the other end is connected via a connecting shaft 73. It is connected to a lever 74, and the lever 74 is rotatable around a shaft 75.

Therefore, the pressing portion 74a of the lever 74 is connected to the tip opening lever 6.
5, the pressing part 65a of the tip opening lever 65
You will be performing a similar exercise.

Further, a rear end chuck member 80 is disposed on the outer periphery of the drum 32 with a length that allows it to be pressed against the entire length of the drum 32,
Its both ends are fixed to support plates 81, 81' in the form of rectangular plates. The support plates 81, 81' each support the drum shaft 41.
．． 41', and is rotatable relative to the drum 32'.
It is constructed to be slidable in the radial direction of the drum shaft 41.41'', and is always biased in the direction of the drum shaft 41.41'' by a spring 82.82' provided between the drum shaft 41.41'' and the drum shaft 41.41''.

A pin 83 is fixed to the support plate 81.81', the tip of which falls into a groove 84 provided on the side surface of the drum 32. Furthermore, a balance weight 85.85° is attached to the support plate 81.81', so that the drum 32 can maintain a balanced state of weight distribution during one rotation regardless of the position of the rear end chuck member 80. ing.

In addition, a slide lever 8 is provided on the frames 4o and 40'.
6 is slidably attached via a shaft 87, and a piece 88 is attached to the tip of the slide lever 86.

A rear end release lever 90 that operates the rear end chuck member 80 is rotatable around a shaft 91, one end of which is fitted into a shaft 92 provided on the slide lever 86, and a roller 93 at the other end. is provided. The roller 93 is adapted to move in contact with a cam 94 provided on the camshaft 68. A pressure roller 98 is provided between the rear end chuck member 80 and the front end chuck member 64.
8 has a length that can be pressed over the entire length of the drum 32,
It is rotatably supported by one end of a lever 100 which is rotatable about a shaft 99.

A roller 101 is provided at the other end of the lever 100,
The lever lOO is adapted to move in contact with a cam 102 that is pivotally attached to the camshaft 68. Further, the lever 100 is biased by a spring in the direction of pressing the pressure roller 98 against the circumferential surface of the drum 32.

Further, the pressure roller 98 is positioned at a position of 34M with respect to the circumferential surface of the drum 32 by the cam 92. That is, the pressure roller 98 is in pressure contact with the circumferential surface of the drum 32 and is closed in Table 1, the pressure roller 98 is slightly away from the circumferential surface of the drum 32 and is in the intermediate state in Table 1, and the pressure roller 98 is in a state in which it is in pressure contact with the circumferential surface of the drum 32 and is in the intermediate state in Table 1. This is the 3rd position in the fully open state in Table 1.

Table 1: Front end chuck Rear end chuck Pressing member 64 Member 80 Roller 98(a) Open
Open Middle (initial position) (b) Closed
Open Closed (c) Closed Closed Fully closed (d)
Close Open Fully open (
e) Open hearing
Fully open m Close Open Fully open intermediate The rotatable presser rollers 103, 104, 105 shown in FIG. 4
It is fixed at 0'. A rotatable presser roller 107 is provided on the guide plate 106, and a detector 108 is provided near the guide plate 34 to detect the leading edge of the recording sheet S when it is stored. Further, a photodetector 109 is provided near the camshaft 68, and detects the rotational position of the camshaft 68 as described later. That is,
Three types of cams 69, 94, and 102 as well as six photo choppers (not shown) are attached to the cam shaft 68, and an output as shown in FIG. 12 is obtained from the photo detector 109. Table 1 shows the front end chuck member 64, the rear end chuck member 80, and the pressure roller 98, which operate as the camshaft 58 rotates, C8) to (f) in FIG.
) is shown.

9 and 10 show the configuration of the optical scanner system 24 in a plan view,
This is a side view, and the laser beam L emitted from the light source 110 passes through a mirror 111° and a beam compressor lens 112, and its light intensity is modulated by an ultrasonic optical modulator 113. And beam expander lens 11
4. The scanning rotating polygon mirror 116 is reached via the mirror 115, and is main-scanned here. The laser beam L reaches the recording surface of the drum 32 via the mirror 118.

The embodiment according to the present invention has the above-mentioned configuration, and its operation will be explained next. FIG. 11 and FIG. 12 show the operation timing of each mechanism. As an initial position, the drum 32 is at an angle of 0.
As shown in FIG. 4, the final part 64a of the tip chuck member 64 is separated from the circumferential surface of the drum 32 by the pressure of the tip release lever 65 via the cam 69. Further, the slide lever 86 is lifted by the cam 94 and the rear end release lever 90, and the rear end chuck member 80 is pulled up via the top 88 and pin 83 provided at the tip of the slide lever 86. In this state, the drum 32 is rotatable independently of the rear end chuck member 80. Further, the pressure roller 98 is connected to a cam 102 and a lever 100.
Therefore, the recording sheet S is stopped at a position slightly away from the circumferential surface of the drum 32, and in this state, the winding Is@ of the recording sheet S is completed.

In FIG. 1, one recording sheet S is taken out from a supply magazine 30 by a sheet take-out mechanism 31 consisting of a vacuum suction cup. Next, the winding electric motor 58 shown in FIG. 2 rotates normally, and the winding motor 58 shown in FIG.
．． 53 moves, and the recording sheet S is sent to the drum 32. At this time, the clutch 25 is off, and the drum 32 is stopped in its initial state. In FIG. 3, the leading edge position of the recording sheet S is detected by the detector 60, and when the leading edge of the recording sheet S reaches the clamping part 64a of the leading end chuck member 64, the winding The electric motor 58 stops and the recording sheet S also stops.

For example, if the winding motor 58 is a stepping motor, the timing of this stop can be controlled by counting a predetermined number of pulses after the detection signal from the detector 60. Here, the drive signal to the camshaft 68 causes the cam drive motor (not shown) to move the camshaft 68 from the state shown in FIG.
It is rotated to the state shown in b). That is, the tip opening lever 65
The pressing portion 85a is separated from the tip chuck member 64, and the clamping portion 64a of the tip chuck member 64 is pressed against the circumferential surface of the drum 32 to hold the tip of the recording sheet S, as shown by the dotted line in FIG.

Further, the pressure roller 98 is moved via the lever 100 by the operation of the cam 102, and presses the recording sheet S against the circumferential surface of the drum 32. Next, a signal from a photodetector 10.9 that detects the position of the cam shaft 68 is transmitted. As a result, the clutch 25 is turned on, the winding motor 58 starts rotating normally, and the feeding roller 5
1.5z, 53, and discharge rollers 35 and 36 rotate, and the drum 32 begins to rotate counterclockwise in the A direction. Therefore.

With its leading end chucked by the tip chuck member 64, the recording sheet S is pressed against the drum 32 by a pressure roller 98 and wound around the circumferential surface of the drum 32.
When the drum 32 reaches a preset position, that is, when the rear end of the recording sheet S reaches below the rear end chuck member 80 as shown in FIG. 58 is stopped.

Subsequently, a drive command to the camshaft 68 causes the camshaft 68 to rotate to the position shown in FIG. 11(c). Rear end chuck member 8
0 is the cam 94, the rear end release lever 90, the slide lever 8
6 to the peripheral surface of the drum 32, and chucks the rear end of the recording sheet S. At this time, the tip of the pin 83 connecting the slide lever 86 and the support plate 39 falls into ll84, the other end separates from the slide lever 86, and the pin 83 is attached to the drum 30 together with the rear end chuck member 80. Rotatable to follow and sit. Further, the pressure roller 98 is operated by a cam 102 and a lever 100.
As shown by arrow C in FIG. 5, the rear end chuck member 80 is far away from the circumferential surface of the drum 32 and is in pressure contact with the drum 32.
This allows the recording sheet S to pass through the drum 3.
The winding around 2 is completed.

This state corresponds to FIG. 11(d), in which the clutch 25 is turned off and the writing motor 46 starts rotating.
2 further rotates in the A direction. When the leading edge of the recording sheet S reaches the writing position detected by the encoder 37 shown in FIG. 2, mechanically in the state shown in FIG. 6 and operationally shown in FIG. Use recording sheet S
Writing begins. This writing is on drum 32
The writing is completed while rotating as it is, and the end of writing is commanded by a position signal of a predetermined position of the drum 32 or an end signal from outside, and the writing motor 46 stops in the state shown in FIG. 11(f). Then the drum 32 stops.

Regarding the collection operation of the recorded recording sheet S, first, the clutch 25 is turned on at the position shown in FIG. 11(m), the winding motor 58 is reversed, and the drum 32 is rotated clockwise in the direction B as shown in FIG. 11(g). Rotate to the state of . This position is the fifth
Returning to the positional relationship shown in the figure, the cam drive signal rotates the camshaft 68 to the position shown in FIG. Release the rear end of the recording sheet S by separating from the recording sheet S.

Next, according to the signal from the photodetector 109, the winding motor 5
8 moves the drum 32 in the direction A in advance in FIG. 11 (h
), the rear end of the recording sheet S faces toward the guide plate 34 as shown in FIG. 7 due to its elastic restoring force.Subsequently, when the drum 32 is rotated in the direction B,
The rear end of the recording sheet S is guided into the guide plate 34 so as to be pushed out by the tip chuck member 64, and the discharge roller 35 rotates at the same peripheral speed as the drum 32.
．． 36 and sent to the storage magazine 38.

Rotatable presser roller 103.104゜105.107
prevents the recording sheet S from bulging, and also prevents the drum 3 from bulging.
This is to smoothly change the curved state on the circumferential surface of No. 2 back to a flat state. When the tip chuck member 64 reaches the predetermined state shown in FIG. 11(i), that is, the state shown in FIG. 8, the winding motor 58 stops and the drum 32 also stops. The camshaft 68
rotates to the state shown in FIG. 11(e), and the cam 69, tip release lever 65, relay lever 71. The clamping portion 64 of the tip chuck member 64 is inserted through the lever 74 and the pressing portion 74a.
a is separated from the circumferential surface of the drum 32, and the recording sheet S is released from the drum 32.

Then, the winding electric motor 58 rotates in response to the signal shown in FIG. 12(e) from the photodetector 109, drives the discharge rollers 35 and 36, and feeds the recording sheet S into the storage magazine 38.

At this time, the clutch 25 is off, and the drum 32
remains stopped. When the recording sheet s is stored in the storage magazine 38, the camshaft 68 rotates until it reaches the state shown in FIG. Next, the winding motor 58 is rotated by the signal shown in FIG. Figure (m
). The drive signal to the camshaft 68 causes the camshaft 68 to rotate to the initial state shown in FIG. All operations are complete.

On the other hand, in the optical scanner system 24, as shown in FIG.
As shown in the figure, a laser beam L emitted from a laser light source 110 changes direction by a mirror 111,
The beam is focused by a beam compressor lens 112, subjected to light intensity modulation based on the information to be recorded by an ultrasonic optical modulator 113, and further beam expander lens 114,
The light is sent to a rotating polygon mirror 116 via a mirror 115. Then, a main scan is performed in which the laser beam L is moved in a direction perpendicular to the moving direction of the recording sheet S by the one-rotation polygon mirror 116, and the optical information is transferred to the recording sheet on the drum 32 through the fθ lens unit 117 and the mirror 118. The image is formed on S. Further, as the drum 32 rotates, sub-scanning is performed in which the recording sheet S is moved in a direction perpendicular to the main-scanning direction of the laser beam L.

[Effects of the Invention] As explained above, the image recording apparatus according to the present invention can effectively utilize space by changing the rotational direction of the drum and the conveyance path of the recording sheet during feeding and discharging. This makes it possible to improve the operability of attaching and detaching the magazine, and furthermore, it is possible to prevent the front and back sides of the recording sheet from being reversed between feeding and discharging.

[Brief explanation of the drawing]

1 to 12 show an embodiment of the image recording apparatus according to the present invention, in which FIG. 1 is a system configuration diagram, FIG. 2 is a side view of the drum drive system, and FIGS. Figure 8 is a structural diagram related to the feeding and ejection of recording sheets, Figure 9 is a plan view of the optical scanner system, Figure 10 is a side view, Figure 11,
2 is a timing chart of the detection mechanism and the operating mechanism, FIG. 13 is an explanatory diagram of a conventional linear arrangement method, and FIG. 14 is an explanatory diagram of a known transport mechanism. 20 is a control system, 21 is a supply system, 22 is a drum system, 2
3 is a storage system, 24 is an optical scanner system, 30 is a supply magazine, 32 is a drum, 35.36ft discharge roller, 3
8 is a storage magazine, 40゜40゛ is a frame, 46 is a writing electric motor, 49 is a clutch, 51, 52, 53 is a feeding a-5゜58 is a winding electric motor, 64 is a tip char 2 member , 65 is a tip opening lever, 68 is a camshaft, 8o is a rear end chuck member, 81.81' is a support plate, 83 is a bottle,
84 is a groove, 86 is a slide lever, 9o is a rear end release lever, 98 is a pressure roller, and S is a recording sheet. Patent applicant Canon Corporation Figure 1 Figure 2 Figure 511 Figure 6 Figure 7 89 countries! s10 Figure 110 Figure 12

Claims (1)

[Scope of Claims] 1. A device for recording an image on a recording sheet wound around a drum using a modulated light beam, the supply system having a supply roller that feeds the recording sheet to the drum. and a drum system that performs sub-scanning during recording by wrapping a recording sheet around the drum and rotating the drum, and a storage system having a discharge roller that discharges the recording sheet after recording, The drum rotates in different directions when the recording sheet is received by the supply roller and when the recording sheet is discharged by the discharge roller, so that the conveyance path is different between when the recording sheet is received and when the recording sheet is discharged. An image recording device characterized by: 2. The image recording apparatus according to claim 1, wherein the direction in which the recording sheet contacts the drum is different between when receiving the recording sheet and when discharging the recording sheet. 3. The image recording apparatus according to claim 1, wherein the supply system includes a supply magazine. 4. The image recording apparatus according to claim 3, wherein the storage system includes a storage magazine. 5. The image recording apparatus according to claim 4, wherein the supply magazine and the storage magazine are arranged in parallel, and the attachment and detachment directions of both magazines are the same. 6. The image recording apparatus according to claim 1, wherein during the recording, the drum rotates in the same direction as when receiving the recording sheet.