JPH09146440A - Laser recording device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To moderate the impact or vibration of a laser recording unit accompanying the opening and closing or movement of each member of a device, and ensure the positional precision of the laser recording unit. SOLUTION: A laser recording unit 55 is held by a second frame 83 through an impact cushioning member 101. After the first frame 83 is locked to a first frame 81 by a first lock mechanism 90, the laser recording unit 55 is locked to the second frame 83. Just after the second frame 83 is closed, the laser recording unit 55 is laid into the state held by the second frame 83 through the impact cushioning member 101, and the impact or vibration in the closing of the second frame 83 is moderated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clamshell type digital copying machine, a laser beam printer, etc., which can be divided and opened, and which has a laser recording unit for scanning a laser beam according to an image signal and irradiating the photosensitive member. The present invention relates to a laser recording device.

[0002]

2. Description of the Related Art A conventional clamshell type digital copying machine which can be divided and opened vertically will be described with reference to FIGS. In FIGS. 23 and 24, reference numeral 1 denotes an apparatus main body, which is composed of a first frame 2 and a second frame 4 whose one end is openably and closably supported around a horizontal axis 3.

A damper 5 provided between the other end of the first frame 2 and the other end of the second frame 4 can hold the second frame 4 in an open state.
Further, the lock mechanism 6 provided on the second frame 4 can lock the second frame 4 with respect to the first frame 2.

In FIGS. 23 and 24, 7 is a document cover, 8 is a document mounting table, 9 is a scanner unit, 10 is a laser recording unit, 11 is a photoconductor, 12 is a charger, 13 is a developing device,
Reference numeral 14 is a peeling claw, and 15 is a cleaning device, which are arranged on the second frame 4. Scanner unit 9
Is a lamp reflector assembly 16 for exposing the original,
The photoelectric conversion element (CCD) 17, the reflected light image from the original is C
A plurality of reflection mirrors 18 for guiding to the CD 17, and a lens 19 for forming a reflected light image from the original on the CCD 17.
Etc. are included. The laser recording unit 10 includes a polygon mirror 2 that deflects laser light according to an image signal at an equal angular velocity.
0, polygon motor 2 supporting polygon mirror 20
1. F-θ lenses 22a and 22 for correcting so that the laser beam deflected at a constant angular velocity is deflected at a constant velocity on the photoconductor 11.
b, a mirror 23 for guiding the laser light to the photoconductor 11 and the like are included.

Further, in FIGS. 23 and 24, 26 is a paper feed cassette, 27 is a transfer peeling device, 28 is a transport belt for transporting paper, 29 is a fixing device, and 30 is a discharge tray, and these are the first frame. It is arranged in 2.

[0006]

In the conventional digital copying machine, the laser recording unit 10 has the second frame 4.
Since it is fixed with a screw or the like to the second frame 4, for example, when the second frame 4 is opened or closed to handle a trouble such as a paper jam,
The laser recording unit 10 will be directly subjected to the shock and vibration. In particular, during inertial rotation after the driving of the polygon motor 21 is stopped, the high-speed rotating motor shaft, bearings, and the like may be damaged at a portion vulnerable to impact or vibration.

When the laser recording unit 10 receives an impact or a vibration, the components of the laser recording unit 10, such as the f-θ lenses 22a and 22b and the mirror 23, are displaced and the irradiation position of the laser light is displaced. Therefore, the image quality may be adversely affected.

Further, when the second frame 4 is deformed due to distortion due to opening and closing, the laser recording unit 10 is displaced due to the deformation, the positional accuracy with respect to the peripheral members is lowered, and the image quality is adversely affected. May be given.

On the other hand, Japanese Patent Laid-Open No. 5-35057 discloses that
There is disclosed a clamshell type image forming apparatus in which an optical system unit is elastically displaceably attached to an upper section in a three-dimensional manner and the optical unit is positioned by a positioning means when the upper section is closed.
If the optical system unit is only displaceably attached, the above-mentioned problems may occur due to impact and vibration on the optical system unit due to the opening / closing operation of the upper section.

Further, when the upper section is closed and the optical system unit is fixed, the optical system unit is subject to shock and vibration due to, for example, the operation of inserting / removing the paper feed cassette and the operation of opening / closing the document cover. However, the above problems will occur.

In view of the above, it is an object of the present invention to provide a laser recording device which can alleviate the impact and vibration on the laser recording unit due to the opening and closing and movement of each member of the device and can secure the positional accuracy of the laser recording unit. And

[0012]

According to another aspect of the present invention, there is provided a recording apparatus main body comprising a first frame and a second frame which is openably and closably supported by the first frame.
In a laser recording device in which a laser recording unit for scanning a laser beam according to an image signal to irradiate a photoconductor on the second frame is mounted, the laser recording unit is provided with the second frame via an impact cushioning member. Is held in
A first locking mechanism that locks the second frame with respect to the first frame when the second frame is closed;
A second lock mechanism for locking the laser recording unit with respect to the second frame after being locked by the first lock mechanism is provided. As a result, when the second frame is closed, the second recording mechanism is not locked and the laser recording unit is held by the second frame via the shock absorbing member. The shock and vibration received by the laser recording unit when closed can be reduced.

If the lock release by the second lock mechanism is performed before the lock release by the first lock mechanism or before the second frame is fully opened, the second frame is opened or fully opened. It is possible to reduce the shock and vibration that the laser recording unit receives at that time.

Further, when the lock is released by the second lock mechanism except during the recording operation, the shock received by the laser recording unit other than during the recording operation,
Vibration can be reduced.

Further, the lock release by the second lock mechanism is performed when the laser recording apparatus is in a state different from the normal state. Here, when the laser recording device is different from the normal state, for example, when an abnormality such as a paper jam occurs in the laser recording device or a movable body (paper feed cassette, automatic double-sided paper feeding) that can be moved to the recording device main body. Device, a laser recording unit when it is moved due to a relatively heavy weight such as a front cover that is openably and closably attached to the recording apparatus main body and covers various members in the recording apparatus main body, a double-sided automatic document feeder, a sheet post-processing apparatus, and the like. It is assumed that a member that is subject to shock or vibration) is not installed in the specified position. As a result, when performing processing to deal with abnormalities such as paper jams,
Alternatively, it is possible to mitigate the shock and vibration received by the laser recording unit when returning the moved moving body to a predetermined position.

Further, one end of the second frame is supported by the first frame so as to be openable and closable about the axis, the first locking mechanism is disposed on the other end side of the second frame, and the second locking mechanism is one end of the second frame. It is arranged on the side. The one end side of the second frame, that is, the side closer to the rotation center of the second frame is less affected by the deformation such as distortion of the second frame. Therefore, if the second lock mechanism is arranged on the one end side of the second frame, the laser recording unit The second frame can be locked at a position where the influence of deformation such as distortion of the second frame is small, and the positional deviation of the laser recording unit due to the deformation of the second frame can be reduced as much as possible.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION

(First Embodiment) As shown in FIGS. 1 and 2, a digital copying machine, which is a laser recording apparatus according to a first embodiment of the present invention, includes a scanner unit 41, a laser printer unit 42, and a paper feed unit in a copying machine body 40. Unit 43 and sheet post-processing device (sorter)
44 is provided.

The scanner unit 41 includes a document placing table 45 made of transparent glass and a double-sided automatic document feeder (RDF) 4.
6 and a scanner unit 47. RDF4
6 sets a plurality of originals at a time, automatically feeds the originals one by one to the scanner unit 47, and also reverses the originals according to the operator's selection so that one side or both sides of the originals are The scanner unit 47 is made to read. The scanner unit 47 forms a lamp reflector assembly 48 for exposing a document, a plurality of reflection mirrors 50 for guiding a reflected light image from the document to a photoelectric conversion element (CCD) 49, and a reflected light image from the document on the CCD 49. The lens 51 for

The scanner unit 41 is constructed so that the scanner unit 47 moves along the lower surface of the document placing table 45 to read the document image, and when the RDF 46 is used, it is placed at a predetermined position below the RDF 46. The document image is read while the document is conveyed while the scanner unit 47 is stopped.

An image signal (image data) obtained by reading the original image with the scanner unit 47 is sent to an image processing unit (not shown), and various processes such as histogram processing, error diffusion processing, density conversion processing and magnification conversion processing are performed. After various processing, the image data is temporarily stored in the memory of the image processing unit, and the image data in the memory is given to the laser printer unit 42 according to the output instruction to form an image on a sheet.

The laser printer section 42 includes a laser recording unit 55 and an electrophotographic process section 56 for forming an image. The laser recording unit 55 includes a semiconductor laser (not shown) that emits a laser beam corresponding to image data from the memory, a polygon mirror 57 that deflects the laser beam at an equal angular velocity, and a laser beam that is deflected at an equal angular velocity in the electrophotographic process unit 56. The photoconductor 58 has f-θ lenses 59a and 59b for correcting so that the light is deflected at a constant speed, a mirror 60 that guides laser light to the photoconductor 58, and the like.

The electrophotographic process section 56 is constructed by disposing a charging device 61, a developing device 62, a transfer peeling device 63, a peeling claw 64, a cleaning device 65 and a fixing device 66 around a photoconductor 58. Further, the downstream side of the fixing device 66 in the sheet conveying direction and the conveying path 67 communicating with the sorter 44 and the sheet feeding portion 4
It is branched to a conveyance path 69 leading to an automatic double-sided sheet feeding device 68 for performing double-sided or three-sided copying and is switched by a reversing gate 70.

The sorter 44 is constructed so as to distribute the paper on which the toner image is fused to a plurality of bins 44a and discharge it. The sorter 44 extends in the left-right direction along a pair of front and rear rails 71 attached to the lower portion of the copying machine body 40. It is possible to move to.

The paper feeding section 43 is a drawer type automatic double-sided paper feeding device 68 mounted in the copying machine main body 40 so as to be able to be taken in and out in the front-back direction. It is provided with a drawer type paper feed cassette 72 mounted so as to be able to be taken in and out. The paper feeding section 43 includes a common conveyance path 73, and the common conveyance path 73 feeds the paper stored in the paper feed cassette 72 one by one from the top and conveys it toward the electrophotographic process section 56. Is configured. Further, the common conveyance path 73 merges with the conveyance path from the automatic double-sided sheet feeding device 68 on the way to the electrophotographic process section 56, and the photoconductor 5 of the electrophotographic process section 56 is merged.
8 to the image forming position between the transfer peeling device 63.

In the figure, reference numeral 74 is a conveyance roller, 75 is a conveyance belt, 76 is a paper discharge roller, 77 is a paper detection sensor for detecting a sheet before transfer, and 78 is a paper detection sensor for detecting a sheet after transfer. is there.

In the thus constructed digital copying machine, the image data obtained by being read by the scanner unit 47 is subjected to various kinds of processing in the image processing section and output as laser light from the semiconductor laser. . This laser light is reflected by the polygon mirror 57 and the f-θ lens 59.
The surface of the photoconductor 58 is irradiated with the light by scanning with a, 59b, etc., and an electrostatic latent image according to the original image is formed on the surface of the photoconductor 58. This electrostatic latent image is visualized by the toner of the developing device 62 to become a toner image, and the paper feed cassette 7
After being transferred onto the sheet conveyed from No. 2, it is fixed on the sheet by the fixing device 66. The sheet on which the image is formed in this manner is fed from the fixing device 66 through the conveyance path 67 to the sorter 4
4 or is conveyed to the automatic double-sided sheet feeding device 68 through the conveying path 69 and is subjected to double-sided or composite copying.

The above-mentioned digital copying machine has a common transport path 73.
The main body of the copying machine 40 is a clamshell type that can be divided and opened vertically from the main conveyance path 80 to the conveyance path 67. The copying machine main body 40 has a first frame 81 and a horizontal axis 82 at one end of the first frame 81. The second frame 83 is openably and closably supported around the (rotation center). The damper 84 provided between the other end of the first frame 81 and the other end of the second frame 83 can hold the second frame 83 in an open state.

The first frame 81 is provided with a transfer peeling device 63, a conveyor belt 75, a fixing device 66, and a paper feeding unit 43, which are components of the electrophotographic process unit 56, and a second frame 83. Is a scanner unit 41, a laser printer unit 42 (a photoconductor 58 which is a constituent member of the laser recording unit 55 and the electrophotographic process unit 56, and a charger 6).
1, a developing device 62, a peeling claw 64, and a cleaning device 65) are arranged.

The second frame 8 is provided on the other end side of the second frame 83, that is, on the side opposite to the side on which the horizontal shaft 82 is arranged.
A first locking mechanism 90 is provided for locking the second frame 83 with respect to the first frame 81 when the 3 is closed.

As shown in FIGS. 3 and 4, the first lock mechanism 90 includes a rotary shaft 91 rotatably supported by the second frame 83 and arranged in the front-rear direction, and a first frame fixed to the rotary shaft 91. A pair of front and rear lock levers 93 that engage with engagement holes 92a formed in the pair of front and rear locking plates 92 of 81, and a lock release lever 94 fixed to the front end of the rotating shaft 91.
And a biasing member 95 that biases the lock lever 93 in the engaging direction.
It is composed of

The rotary shaft 91 has a milling surface 91 on one side.
a has its front and rear ends rotatably supported by a pair of front and rear bearings 96 attached to the second frame 83.

The lock lever 93 is formed in a U shape in a plan view, and a pair of front and rear claw portions 93a is formed in the lower portion thereof. As shown in FIG. 5, a rotary shaft 91 is fitted in the upper portion of the lock lever 93, and a screw 97 is screwed so as to press the milling surface 91a of the rotary shaft 91. It is fixed to the rotary shaft 91 without being displaced.

As shown in FIG. 6, the lock release lever 94 is formed in a substantially fan shape in front view, and the front end of the rotary shaft 91 is fitted in the lower portion thereof. When the lock release lever 94 is operated, the rotary shaft 91 is rotated. Also, the lock lever 93 is configured to operate integrally.

The urging member 95 is a torsion coil spring having a rotary shaft 91 inserted therethrough, and has one end loosely fitted in a small hole 98 formed in the second frame 83 and the other end locked. It is loosely fitted in a small hole 99 formed in the lever 93. Thus, when the second frame 83 is closed, the claw portion 93a of the lock lever 93 is guided while abutting against the inclined surface 92b of the locking plate 92, and the lock lever 93 resists the biasing force of the torsion coil spring 95. When the claw portion 93a reaches the position facing the engagement hole 92a of the locking plate 92 by rotating in the direction of arrow A in FIG. 3, the lock lever 93 is moved by the biasing force of the torsion coil spring 95 in the direction of arrow B in FIG. The claw portion 93a is automatically engaged with the engaging hole 92a so that the first frame 81 and the second frame 83 are locked.

When the lock release lever 94 is rotated in the direction of arrow C in FIG. 3, the lock lever 93 also moves in the direction of arrow A in FIG.
The claw portion 93a is separated from the engaging hole 92a and unlocked by integrally rotating in the direction, and at this time, the second frame 83 is automatically opened by the urging force of the damper 84.

In FIG. 3, reference numeral 100 denotes a lock detection switch for detecting the locked state of the first frame 81 and the second frame 83, which is arranged on the first frame 81.
The lock detection switch 100 detects (turns on) lock when the lower end of the lock lever 93 abuts when the claw portion 93a of the lock lever 93 is engaged with the engagement hole 92a, and the claw portion 93a of the lock lever 93 is detected. Is the engagement hole 92a
When the lock lever 93 is disengaged from the lock lever 93, the lower end of the lock lever 93 is separated from the lock lever 93 to detect the lock release (OFF).

In such a clamshell type digital copying machine, when the second frame 83 is opened and closed, each member receives the shock and vibration at that time. In particular, the laser recording unit 55 is apt to be adversely affected by shock and vibration, and thus is held by the second frame 83 via the shock absorbing member 101. Also, the laser recording unit 5
5 is locked to the second frame 83 (positioning and fixing)
The second lock mechanism 102 is provided.

Here, the laser recording unit 55 and the second lock mechanism 102 will be described with reference to FIG. The laser recording unit 55 includes a box-shaped unit main body 110, a semiconductor laser, a laser transmission substrate 111, a collimator lens 112 that condenses parallel laser light, a condenser lens (cylindrical lens) 113, a polygon mirror 57, and a polygon mirror 57. Polygon motor 114, f-.theta.
Lenses 59a and 59b, a mirror 60 and the like are arranged.

A total of four shock absorbing members 101 are interposed between the front and rear wall surfaces of the unit main body 110 and the front and rear second frames 83 by screws.
Of these shock-absorbing members 101, the shock-absorbing members 1 on the front and rear of one end side of the second frame 83, that is, the one closer to the horizontal axis 82
01 is arranged between the horizontal shaft 82 and the polygon motor 114, and the shock absorbing members 101 on the other end side of the second frame 83, that is, the front and rear parts farther from the horizontal shaft 82, are the first lock mechanism 90.
And the polygon motor 114. It should be noted that these shock absorbing members 101 are provided in the unit main body 110.
However, they may be arranged above and below or to the left and right of the unit main body 110.

Each shock absorbing member 101 is an elastic body made of hard rubber and is formed in a substantially cylindrical shape having a through hole 101a in the center thereof. When a strong shock or vibration is applied to the copying machine body 40. , Its shock and vibration are caused by the unit body 1
It has a function of absorbing so as not to be directly transmitted to 10. Each shock-absorbing member 101 may be an elastic body such as a spring or a damper other than hard rubber, so that the shock and vibration to the unit main body 110 are alleviated and the position of the laser recording unit 55 is sufficiently maintained. Any member can be used.

The second lock mechanism 102 is closer to one end of the second frame 83 than the first lock mechanism 90, that is, the horizontal shaft 82.
Are provided one by one in the front and rear so as to sandwich the laser recording unit 55, and are respectively interposed between the front and rear second frames 83 and the mounting frames 115 facing the second frames 83. .

The second lock mechanism 102 includes a pair of left and right lock shafts 120 that can be fitted into a pair of left and right fitting holes 116 formed in the front and rear wall surfaces of the unit body 110 in correspondence with the shock absorbing member 101. , The lock shaft 1
An urging body 121 that urges the lock shaft 120 in a direction away from the fitting hole 116, and a drive unit 122 for moving the lock shaft 120 in a direction to fit into the fitting hole 116 or a direction to separate from the fitting hole 116. It consists of and. Therefore, the laser recording unit 55 is locked to the second frame 83 at the position where the shock absorbing member 101 is arranged.

The lock shaft 120 passes through the second frame 83 and is movably fitted into the circular through holes 101a of the respective shock absorbing members 101, one end of which is fitted into the fitting hole 116 and the other fitting hole 116. It is formed in a conical shape so as to be pressed against the hole wall of, and a brim portion 120a is formed at the other end.

As a result, even if the laser recording unit 55 is slightly displaced with respect to the second frame 83, the conical end of the lock shaft 120 is fitted into the circular fitting hole 116. The laser recording unit 55 can be locked while correcting the positional deviation of the laser recording unit 55. The shock absorbing member 1
The through hole 101a of 01 has a function as a guide when the lock shaft 120 moves, and
It is configured to guide the fitting hole 116 with certainty while correcting some distortion of 0.

The urging body 121 is the lock shaft 12
0 is a coil spring inserted, and is interposed between the second frame 83 and the flange portion 120 a of the lock shaft 120.

The driving unit 122 includes a rotating shaft 125 rotatably supported by bearings 124 on a pair of left and right U-shaped mounting plates 123 provided between the second frame 83 and the mounting frame 115. A pair of left and right circular cams 126 fixed to the rotary shaft 125 and in contact with the flange portion 120a of the lock shaft 120, and a stepping motor 127 that rotationally drives the rotary shaft 125. The lock shaft 120 is urged by the urging force of the coil spring 121.
The flange portion 120a and the circular cam 126 are always in contact with each other. Further, the gear 128 attached to one end of the rotating shaft 125 and the motor gear 129 attached to the motor shaft of the stepping motor 127 mesh with each other, so that the driving force of the stepping motor 127 is transmitted to the rotating shaft 125. Has become.

The center of rotation of the rotary shaft 125 and the center of the circular cam 126 do not coincide with each other and are in an eccentric state, whereby the lock shaft 120 causes the coil spring 121 to rotate as the circular cam 126 rotates. In the direction of fitting into the fitting hole 116 against the urging force of the coil spring 12
The urging force of 1 is used to move in a direction away from the fitting hole 116. That is, the circular cam 126
The amount of movement of the lock shaft 120 can be determined by the amount of rotation of the lock shaft 120.

A circular rotation detecting plate 130 having a plurality of radial slits is fixed to the rotary shaft 125, and a photo sensor 131 for detecting the slits of the rotation detecting plate 130.
Are fixed to the mounting frame 115. As a result, the rotating shaft 12 is detected according to the number of detections by the photo sensor 131.
The rotation amount of 5 or the rotation amount of the circular cam 126 can be detected, and the movement amount of the lock shaft 120 can be recognized based on this. Therefore, the number of detections (set number) of the photosensor 131 corresponding to the position where the lock shaft 120 is fitted into the fitting hole 116 or the position where the lock shaft 120 is separated from the fitting hole 116 is set in advance,
The position control of the lock shaft 120 is possible.

Further, in the digital copying machine, the stepping motor 1 of the second lock mechanism 102 is used according to various conditions.
A control unit composed of a microcomputer for driving and controlling 27 is provided. This control unit uses the first lock mechanism 9
When the lock detection switch 100 on the 0 side is turned on, the function of driving and controlling the stepping motor 127 so that the lock shaft 120 fits into the fitting hole 116 on the second lock mechanism 102 side, and when the lock detection switch 100 is turned off, the lock shaft 120 is locked. Has a function of driving and controlling the stepping motor 127 so as to separate from the fitting hole 116. The drive control of the stepping motor 127 at this time is performed by driving the stepping motor 127 until the number of times of detection by the photo sensor 131 reaches the set number of times.

In the above structure, when an abnormality (trouble) such as a paper jam occurs in the main transport path 80, the lock release lever 94 of the first lock mechanism 90 is operated to lock the second frame 83 with respect to the first frame 81. Is released and the second frame 83 is opened. Then, the lock detection switch 100 is turned off, the stepping motor 127 of the second lock mechanism 102 is driven, and the lock shaft 120 is rotated as the rotary shaft 125 and the circular cam 126 are rotated.
Moves due to the biasing force of the coil spring 121 in a direction away from the fitting hole 116. That is, the second lock mechanism 10
2 shows the lock shaft 120 fitted into the fitting hole 116 and pressed against the hole wall of the fitting hole 116 from the locked posture shown in FIG. 8A to the intermediate posture shown in FIG. Switches to the unlocking posture shown in (c), which is separated from the fitting hole 116, and unlocks the second frame 83 of the laser recording unit 55.

When the second frame 83 is closed after removing the jammed paper with the second frame 83 open, the first lock mechanism 90 causes the first frame 81 to move.
And the second frame 83 are locked. Then, the lock detection switch 100 is turned on and the stepping motor 1
27 is driven, and the lock shaft 120 moves in the direction of fitting into the fitting hole 116 against the biasing force of the coil spring 121 as the rotary shaft 125 and the circular cam 126 rotate. That is, the second lock mechanism 102 is switched from the unlocked posture shown in FIG. 8C to the locked posture shown in FIG. 8A through the intermediate posture shown in FIG. The frame 83 is locked.

As described above, since the second lock mechanism 102 locks after the first lock mechanism 90 locks, the second lock mechanism 102 does not lock the opened second frame 83. The laser recording unit 55 is held by the second frame 83 via the shock absorbing member 101, and the shock and vibration received by the laser recording unit 55 when closing the second frame 83 can be mitigated. . by this,
It is possible to prevent a problem in which the f-θ lenses 59a and 59b, the mirror 60, and the like, which are components of the laser recording unit 55, are displaced and the irradiation position of the laser light is displaced, which adversely affects the image quality.

Particularly, even when the second frame 83 is closed during the inertial rotation after the driving of the polygon motor 114 is stopped, it is possible to prevent the damage of a portion vulnerable to shock and vibration such as a motor shaft or a bearing which rotates at a high speed.

Further, the second lock mechanism 102 is located closer to one end side of the second frame 83 than the first lock mechanism 90, that is, the side closer to the horizontal axis 82, and the laser recording unit 55 is locked to the second frame 83. Is performed at a position near the horizontal axis 82 where the deformation of the second frame 83 such as distortion is relatively small, so that the positional deviation of the laser recording unit 55 due to the deformation of the second frame 83 can be reduced as much as possible, and the laser recording unit can be reduced. It is possible to suppress deterioration of the positional accuracy between the member 55 and the peripheral members and maintain the image quality in a good state.

Here, as shown in FIGS. 9 and 10, instead of the other end side of the second frame 83, that is, the front and rear impact cushioning members 101 and the front and rear lock shafts 120 remote from the horizontal axis 82, the second frame 83 is provided. A pair of front and rear support shafts 140 are arranged to face each other, and the laser recording unit 5 is attached to the support shafts 140.
5 has a structure in which the other end side of the unit main body 110 is rotatably supported, the function of absorbing shock and vibration is slightly inferior to the above structure, but the laser recording accompanying the deformation of the second frame 83 is performed. The distortion and the like of the unit 55 can be reduced as much as possible and the constituent members (the shock absorbing member 101 and the lock shaft 120) can be compared with the above-described structure.
Can be reduced, the manufacturing cost can be reduced, and the size and weight of the second lock mechanism 102 can be reduced.

(Second Embodiment) In the first embodiment, the shock and vibration received by the laser recording unit 55 when closing the second frame 83 can be alleviated, but the second frame 83 is opened. Sufficient measures have not been taken against shock and vibration.

Therefore, in the second embodiment, as shown in FIG.
As shown in Nos. 1 and 12, restriction means 150 for restricting the unlocking by the first lock mechanism 90, that is, for restricting the rotation of the lock lever 93 in the unlocked direction (the direction of arrow A).
And a release switch 151 for releasing the regulation by the regulation means 150.

The restricting means 150 is capable of restricting the rotation of the lock lever 93 in the direction of arrow A in the locked state (see FIG. 11) and of rotating the lock lever 93 in the direction of arrow A in the locked state. Restriction plate 152 that can be switched between the restriction release position (see FIG. 12) and
And a biasing body 1 that biases the regulation plate 152 in the regulation position direction.
53 and a solenoid 154 that attracts the regulation plate 152 and holds it at the regulation release position.

The regulating plate 152 is formed in an L shape with one end protruding upward, and is supported by the upper end of a solenoid mounting plate 155 attached to the first frame 81 so as to be vertically swingable. The urging body 153 is composed of a coil spring, and has one end attached to the other end of the regulation plate 152,
The other end is attached to the solenoid mounting plate 155. The solenoid 154 is mounted on a solenoid mounting plate 155 below the regulation plate 152.

The release switch 151 is a push button 156 mounted on the lock release lever 94 and capable of automatic return.
Is a push-button switch.

In addition to the function of causing the control unit to lock by the second lock mechanism 102 after being locked by the first lock mechanism 90, the lock shaft 120 of the second lock mechanism 102 when the release switch 151 is turned on.
So that the stepping motor 1 is separated from the fitting hole 116.
27 and the function of driving and controlling the stepping motor 127
After the driving is stopped (after the unlocking operation is completed), the solenoid 154 is energized to switch the regulation plate 152 from the regulation position to the regulation release position only while the release switch 151 is on.

As a result, when the lock release lever 94 is grasped and operated in order to open the second frame 83, the push button 156 of the release switch 151 is pushed in to turn on the release switch 151, and the second lock mechanism 10 is turned on.
At step 2, the stepping motor 127 is driven to release the lock. Then, when the driving of the stepping motor 127 is stopped and the unlocking operation of the second lock mechanism 102 is completed, the solenoid 154 operates and the restriction plate 1
Hold 52 in the restriction release position.

Therefore, the lock lever 93 can be rotated in the direction of arrow A, the lock release lever 94 is operated to release the lock by the first lock mechanism 90, and the second frame 83 is opened. Further, when the second frame 83 is closed, the lock lever 93 returns to the restriction position and the restriction plate 15 is returned.
2 is pressed against the biasing force of the coil spring 153 and engaged with the engaging hole 92a, and then the biasing force of the coil spring 153 causes the restricting plate 152 to return to the restricting position. The other configurations and operations are the same as those in the first embodiment, and members having the same functions as those in the first embodiment are designated by the same reference numerals.

As described above, since the unlocking by the second locking mechanism 102 is performed before the unlocking by the first locking mechanism 90, the shock and vibration received by the laser recording unit 55 when closing the second frame 83 are alleviated. At the same time, when the second frame 83 is opened, the lock by the second lock mechanism 102 is released, and the laser recording unit 55 is inserted through the shock absorbing member 101 into the second frame 8.
3, the laser recording unit 55 receives a shock when the second frame 83 is opened,
Vibration can be reduced.

(Third Embodiment) In the third embodiment, as shown in FIGS. 13 and 14, a circular rotation detection having a plurality of slits 160 radially on the horizontal axis 82 fixed to the second frame 83. The plate 161 is fixed, and the second frame 8
A photo sensor 162 that detects the slit 160 of the rotation detection plate 161 is fixed to the position 3. As a result, the opening angle of the second frame 83 can be detected by the number of times the photo sensor 162 detects it.

Here, the angle when the second frame 83 is fully opened with respect to the first frame 81 is θ1, and the opening angle of the second frame 83 when the unlocking by the second lock mechanism 102 is started is θ2. The time from the start of unlocking by the second lock mechanism 102 to the completion thereof is T
1, the time until the second frame 83 is fully opened with respect to the first frame 81 is T2, and the opening angle θ of the second frame 83 is
If the time until opening to 2 is T3, T1 <T
2-T3 is satisfied, in other words, if the opening angle θ2 is set so that the unlocking by the second lock mechanism 102 is completed before the second frame 83 is fully opened, the laser recording when the second frame 83 is fully opened. The impact and vibration received by the unit 55 can be mitigated.

Therefore, the number of detections (reference number) of the photo sensor 162 corresponding to the opening angle θ2 that satisfies the above condition is set in advance. Then, after the second lock mechanism 102 is locked by the first lock mechanism 90,
In addition to the function of locking by the second frame 83
When the number of detection times of the photo sensor 162 reaches the reference number after the opening of the lock lever 120, the function of driving and controlling the stepping motor 127 is added so that the lock shaft 120 of the second lock mechanism 102 is separated from the fitting hole 116.

As a result, the photo sensor 162 rotates around the horizontal axis 82 as the second frame 83 is opened, and the slit 16 of the rotation detecting plate 161 by the photo sensor 162 is rotated.
When the number of times of detection of 0 becomes the reference number of times, the second frame 83 is opened up to the opening angle θ2 that satisfies the above-mentioned condition, and therefore the stepping motor 127 is driven in the second lock mechanism 102 to release the lock. Then, the second frame 83 is fully opened after the unlocking by the second lock mechanism 102 is completed. The other configurations and operations are the same as those in the first embodiment, and members having the same functions as those in the first embodiment are designated by the same reference numerals.

As described above, since the unlocking by the second lock mechanism 102 is performed until the second frame 83 is fully opened, the shock and vibration received by the laser recording unit 55 when the second frame 83 is closed are mitigated. With
It is possible to reduce the shock and vibration received by the laser recording unit 55 when the second frame 83 is opened by a method different from the second embodiment. Moreover, the structure is simpler and the reliability is improved as compared with the case where the lock release by the first lock mechanism 90 is mechanically restricted by the restriction plate or the like.

(Fourth Embodiment) In the first to third embodiments, the second lock mechanism 102 remains locked until the second frame 83 is opened.
During this time, there may be a problem that shock and vibration when the copying machine main body 40 is moved or shocks and vibrations that the copying machine main body 40 receives from the outside are directly transmitted to the laser recording unit 55.

Therefore, in the fourth embodiment, the locking by the second locking mechanism 102 is suppressed to the necessary minimum. That is, if the locking by the second locking mechanism 102 is performed during the recording operation (image forming operation) in which the laser light must be emitted without displacement, it is not necessary otherwise, so during the image forming operation. The lock is released by the second lock mechanism 102 except for.

Here, the start of the image forming operation means the time when the paper detection sensor 77 on the upstream side of the main conveyance path 80 detects (turns on) the paper, and the end of the image forming operation means the paper on the downstream side. It is assumed that the detection sensor 78 detects (turns on) the sheet and then turns off the sheet.

The control unit has a function of driving and controlling the stepping motor 127 so that the lock shaft 120 of the second lock mechanism 102 fits into the fitting hole 116 when the paper detection sensor 77 is turned on. 78
The function of driving and controlling the stepping motor 127 so that the lock shaft 120 of the second lock mechanism 102 is separated from the fitting hole 116 when the switch is turned off is added.

As a result, as shown in FIG. 15, when the sheet feeding operation is started in the sheet feeding section 43 (S1) and the sheet is conveyed from the sheet feeding section 43 to the image forming position, the sheet detection sensor 77 is turned on ( At S2), the stepping motor 127 is driven and locked in the second lock mechanism 102, and the laser recording unit 55, the photoconductor 58, and the like start operating (S3), and the image forming operation is performed. Then, when the sheet after transfer and peeling (S4) is conveyed, the sheet detection sensor 78 is turned on (S5), and when the sheet passes and the sheet detection sensor 78 is turned off (S6), the second lock mechanism 102 is provided. At the step, the stepping motor 127 is driven to release the lock, and the laser recording unit 55 and the photoconductor 5 are released.
The operations such as 8 are also ended (S7).

The image forming operation is started at the time when the operation key for performing the image forming operation of the operation panel (not shown) is operated or the digital sensor installed in the communication device is operated in addition to turning on the upstream paper detection sensor 77. In the case of a copying machine, it may be when a signal from the outside arrives. Other configurations and operations are similar to those of the first embodiment, and members having the same functions as those of the first embodiment are designated by the same reference numerals.

As described above, the lock by the second lock mechanism 102 is released except during the image forming operation.
To reduce the shock and vibration received by the laser recording unit 55 when the main body 40 of the copying machine is moved or when the main body 40 of the copying machine is subjected to external shock or vibration, other than when the image forming operation is performed. You can

(Fifth Embodiment) When an abnormality (trouble) such as paper jam occurs in the digital copying machine, the second frame 83 is opened to remove the jammed paper. At this time, the second lock mechanism is used. When locked by 102, the laser recording unit 55 is impacted and vibrated.

Therefore, in the fifth embodiment, in addition to the function of causing the control section to lock by the second lock mechanism 102 after being locked by the first lock mechanism 90, the second lock mechanism 102 when a trouble occurs. A function of driving and controlling the stepping motor 127 is added so that the lock shaft 120 in (1) is separated from the fitting hole 116.

Here, in a normal sheet conveyance state, the time from turning off the upstream paper detection sensor 77 to turning on the downstream paper detection sensor 78 is T4 (see FIG. 16).
Allowance time T5, which takes into account some errors in paper transport,
If the time from when the upstream paper detection sensor 77 is actually turned off to when the downstream paper detection sensor 78 is turned on is T6, it is determined that a paper jam has occurred when T6> T4 + T5. ing.

As a result, when the paper is actually conveyed and the image forming operation is performed, the paper passes the paper detection sensor 77 and the paper detection sensor 77 is turned off before the paper detection sensor 7 is turned off.
When the time T6 before turning ON is longer than T4 + T5, it is determined that the paper jam has occurred, and the stepping motor 127 is driven in the second lock mechanism 102 to release the lock. The other configurations and operations are the same as those in the first embodiment, and members having the same functions as those in the first embodiment are designated by the same reference numerals.

Further, in the above description, the case where a paper jam occurs as an example of the trouble has been described. In addition to this, for example, when the paper in the paper feeding cassette 72 is exhausted, or when the toner is insufficient in the developing device 62. , Other motor lock, fixing trouble, laser trouble, etc.
When a trouble occurs in which the laser recording unit 55 may be impacted or vibrated during the trouble processing, the second lock mechanism 102 may unlock the trouble.

As described above, since the unlocking by the second lock mechanism 102 is performed when a trouble occurs in the digital copying machine, it is possible to mitigate the shock and vibration received by the laser recording unit 55 when the trouble is dealt with.

(Sixth Embodiment) In a digital copying machine, when a relatively heavy moving body movably arranged in the copying machine body 40 moves, the copying machine body 40 receives a strong shock and vibration. However, if the second lock mechanism 102 is locked at this time, the laser recording unit 55 receives a strong vibration or shock.

Therefore, in the sixth embodiment, the lock is released by the second lock mechanism 102 when various moving bodies are not mounted at predetermined positions.

Here, the movable body includes a drawer type paper feed cassette 72, a drawer type automatic double-sided paper feeder 68, and various members in the copier body 40 which are openably and closably arranged on the front surface of the copier body 40. A front cover 200 (to be described later) that covers the RD that is openably and closably arranged on the upper portion of the copying machine main body 40.
F46, a sorter 44 and the like that can move in the left-right direction with respect to the copying machine body 40 are conceivable, and these will be specifically described.

First, in the case of the paper feed cassette 72, as shown in FIG. 17, a protruding pin 171 protruding rearward is attached to the rear side wall surface of the cassette body 170, and the paper is fed to the first frame 81 corresponding to the protruding pin 171. A cassette detection switch 172 for detecting the presence / absence of the cassette 72 is arranged. The cassette detection switch 172 is turned on when the projecting pin 171 abuts when the paper feeding cassette 72 is mounted at a predetermined position where paper can be fed, and is turned off when the paper feeding cassette 72 is pulled out and the projecting pin 171 no longer abuts. It is supposed to do. In FIG. 17, 173 is a matching plate movable in the front-rear direction, and 174 is a rear end plate.

In addition to the function of causing the control unit to lock by the second lock mechanism 102 after being locked by the first lock mechanism 90, the lock shaft 120 in the second lock mechanism 102 when the cassette detection switch 172 is turned off. Is added to the stepping motor 127 so that the stepping motor 127 is separated from the fitting hole 116.

As a result, when the paper feed cassette 72 is pulled out, the lock by the second lock mechanism 102 is released. For example, when the paper feed cassette 72 pulled out is replenished with paper and returned to a predetermined position, the laser recording unit. It is possible to mitigate the impact and vibration that the 55 receives. When the paper feed cassette 72 is returned to the predetermined position, the cassette detection switch 172 is turned on and the second lock mechanism 102 locks it.

In the case of the automatic double-sided paper feeding device 68, as shown in FIG. 18, a protruding pin 181 protruding rearward is attached to the rear side wall surface of the paper feeding device main body 180, and corresponding to the protruding pin 181 is attached to the first frame 81. A paper feeding device detection switch 182 for detecting the presence / absence of the automatic double-sided paper feeding device 68 is arranged. The paper feeding device detection switch 182 is provided with a protruding pin 181 when the automatic double-sided paper feeding device 68 is mounted at a predetermined position where paper can be fed.
Is turned on by contacting with the automatic double-sided paper feeding device 68
Is turned off when the projecting pin 181 is no longer in contact with the projecting pin 181. In FIG. 18, 183 is a matching plate movable in the front-rear direction, 184 is a rear end plate movable in the left-right direction, 185 is an automatic double-sided paper feeding roller, 186 is a paper feeding roller shaft, and 187 is an automatic double-sided separating roller. 188 is a holding plate, 189 is a holding plate shaft, 190 is a holding plate driven roller, 1
Reference numeral 91 is a pressing plate driven roller shaft, and 192 is an automatic double-sided call-in roller.

In addition to the function of causing the control unit to lock by the second lock mechanism 102 after being locked by the first lock mechanism 90, when the paper feed device detection switch 182 is turned off, the lock of the second lock mechanism 102 is locked. A function of driving and controlling the stepping motor 127 so that the shaft 120 is separated from the fitting hole 116 is added.

As a result, the lock by the second lock mechanism 102 is released when the automatic double-sided paper feeding device 68 is pulled out, so that when the pulled-out automatic double-sided paper feeding device 68 is returned to a predetermined position for troubleshooting, for example. The shock and vibration received by the laser recording unit 55 can be reduced.
When the automatic double-sided paper feeding device 68 is returned to the predetermined position, the paper feeding device detection switch 182 is turned on and the second locking mechanism 102 locks.

In the case of the front cover 200, FIGS.
As shown in 0, the protruding pin 201 protruding rearward is attached to the rear side wall surface of the front cover 200.
Corresponding to the above, a cover detection switch 202 for detecting opening / closing of the front cover 200 is arranged on the second frame 83. The cover detection switch 202 is the front cover 20.
When the 0 is closed, the projection pin 201 comes into contact with the projection pin 201 to turn it on, thereby opening the front cover 200 to open the projection pin 2
When 01 is no longer in contact, it is turned off.

In addition to the function of causing the control unit to lock by the second lock mechanism 102 after being locked by the first lock mechanism 90, the lock shaft 120 in the second lock mechanism 102 when the cover detection switch 202 is turned off. Is added to the stepping motor 127 so that the stepping motor 127 is separated from the fitting hole 116.

As a result, the lock by the second lock mechanism 102 is released when the front cover 200 is opened, so that, for example, when the front cover 200 is closed or when the next expected opening / closing operation of the second frame 83 is performed. It is possible to reduce the shock and vibration received by the laser recording unit 55. When the front cover 200 is closed, the cover detection switch 202 is turned on and the second lock mechanism 102 locks it.

In the case of RDF46, as shown in FIGS.
Projecting pin 211 projecting downward on the lower wall surface of the RDF 46
Is attached, and an RDF detection switch 212 for detecting opening / closing of the RDF 46 is arranged on the second frame 83 corresponding to the protruding pin 211. RDF detection switch 212
Is turned on when the protruding pin 211 abuts when the RDF 46 is closed, and is turned off when the RDF 46 is opened and the protruding pin 211 no longer abuts.

In addition to the function of causing the control unit to lock by the second lock mechanism 102 after being locked by the first lock mechanism 90, the lock shaft 120 in the second lock mechanism 102 when the RDF detection switch 212 is turned off. Is added to the stepping motor 127 so that the stepping motor 127 is separated from the fitting hole 116.

As a result, the lock by the second lock mechanism 102 is released when the RDF 46 is opened.
For example, after opening the RDF 46 and setting the original,
The shock and vibration received by the laser recording unit 55 when F46 is closed can be mitigated. When the RDF 46 is closed, the RDF detection switch 212 is turned on and the second lock mechanism 102 locks it.

In the case of the sorter 44, as shown in FIGS.
A protrusion pin 221 protruding in the direction of the first frame 81 is attached to the sorter body 220, and a sorter detection switch 222 for detecting the presence or absence of the sorter 44 is arranged on the first frame 81 corresponding to the protrusion pin 221. The sorter detection switch 222 is turned on when the projecting pin 221 abuts when the sorter 44 is at a predetermined position where paper can be discharged,
When the sorter 44 is moved so that the projecting pin 221 does not come into contact with the sorter 44, the sorter 44 is turned off.

In addition to the function of causing the control unit to lock by the second lock mechanism 102 after being locked by the first lock mechanism 90, the lock shaft 120 in the second lock mechanism 102 when the sorter detection switch 222 is turned off. Is added to the stepping motor 127 so that the stepping motor 127 is separated from the fitting hole 116.

As a result, the lock by the second lock mechanism 102 is released when the sorter 44 is moved.
For example, it is possible to mitigate the shock and vibration received by the laser recording unit 55 when returning the sorter 44 moved to the predetermined position for troubleshooting. When the sorter 44 is returned to the predetermined position, the sorter detection switch 222
Is turned on and the second locking mechanism 102 locks. Other configurations and operations are similar to those of the first embodiment, and members having the same functions as those of the first embodiment are designated by the same reference numerals.

As described above, the unlocking by the second lock mechanism 102 is performed when the various moving bodies are not mounted at the predetermined position, and therefore, the impact that the laser recording unit 55 receives when returning these to the predetermined position. , Can reduce the vibration.

The present invention is not limited to the above embodiment, and it goes without saying that many modifications and changes can be made to the above embodiment within the scope of the present invention. For example, the present invention is not limited to a digital copying machine, and may be a clamshell type laser beam printer or facsimile having a laser recording unit. Further, the respective embodiments may be appropriately combined to reduce the impact and vibration received by the laser recording unit.

[0103]

As is apparent from the above description, claim 1
According to the invention, since the locking by the second locking mechanism is performed after the locking by the first locking mechanism, when the second frame is closed, the locking by the second locking mechanism is not performed, and the laser recording unit is the shock absorbing member. It is in the state of being held by the second frame through the, and the shock received by the laser recording unit when closing the second frame,
Vibration can be reduced. As a result, it is possible to prevent a problem that the components such as the f-θ lens and the mirror, which are components of the laser recording unit, are displaced and the irradiation position of the laser beam is displaced, which adversely affects the image quality.

Particularly, even when the second frame is closed at the time of inertial rotation after the driving of the driving unit (for example, a polygon motor) in the laser recording unit is closed, a portion of the motor shaft or bearing that rotates at high speed is susceptible to shock and vibration. Can prevent damage.

According to the second aspect of the present invention, the shock and vibration received by the laser recording unit when closing the second frame are alleviated, and when the second frame is opened,
Since the lock by the second lock mechanism is released and the laser recording unit is held by the second frame through the shock absorbing member, the shock and vibration received by the laser recording unit when opening the second frame is mitigated. can do.

According to the third aspect of the present invention, the shock and vibration received by the laser recording unit when closing the second frame are alleviated, and the second frame is fully opened.
Since the lock by the second lock mechanism is released and the laser recording unit is held by the second frame via the shock absorbing member, the shock and vibration received by the laser recording unit when the second frame is fully opened is mitigated. can do.

According to the invention of claim 4, except during the recording operation, the lock by the second lock mechanism is released and the laser recording unit is held by the second frame through the shock absorbing member. It is possible to reduce the shock and vibration received by the laser recording unit when the main body of the recording apparatus is moved or when the main body of the recording apparatus is subjected to external shock or vibration except when the operation is performed.

According to the fifth aspect of the present invention, when the laser recording apparatus is different from the normal state, such as when an abnormality occurs or when the movable body movably provided in the recording apparatus main body is not mounted at a predetermined position. , The lock by the second lock mechanism is released, and the laser recording unit is held by the second frame via the shock absorbing member, so when performing processing for coping with an abnormality, or by moving the moving body to a predetermined position. It is possible to mitigate the shock and vibration received by the laser recording unit when returning the laser recording device to a normal state such as when returning to the normal state.

According to the invention of claim 6, the second locking mechanism is located at one end side of the second frame, that is, on the side close to the rotation center of the second frame, and locks the laser recording unit with respect to the second frame. Since it is performed at a position close to the center of rotation where the deformation of the second frame such as distortion is relatively small, the displacement of the laser recording unit due to the deformation of the second frame can be reduced as much as possible, and the laser recording unit and peripheral members It is possible to suppress deterioration of the position accuracy of and to maintain a good image quality.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a digital copying machine according to a first embodiment of the present invention when a second frame is opened.

FIG. 2 is a configuration diagram when the second frame is also closed.

FIG. 3 is a front view of the first lock mechanism.

FIG. 4 is a side view of the first locking mechanism.

FIG. 5 is a vertical sectional view of a lock lever.

FIG. 6 is a vertical sectional view of a lock release lever.

FIG. 7 is a cross-sectional view around the second lock mechanism.

8A is a diagram showing a locking posture of a second locking mechanism, FIG. 8B is a diagram showing an intermediate posture of the second locking mechanism, FIG.
FIG. 7C is a diagram showing the unlocked posture of the second lock mechanism.

FIG. 9 is a cross-sectional view around another second locking mechanism.

FIG. 10 is a block diagram of another digital copying machine when the second frame is opened.

FIG. 11 is a front view of the regulating means when the regulating plate is in the regulating position in the second embodiment.

FIG. 12 is a front view of the regulation means when the regulation plate is in the regulation release position.

FIG. 13 is a side view of a rotation detection plate and a photo sensor according to a third embodiment.

FIG. 14 is a rear view of the rotation detection plate and the photo sensor.

FIG. 15 is a flowchart of an image forming operation according to the fourth embodiment.

FIG. 16 is an operation time chart of the paper detection sensor according to the fifth embodiment.

FIG. 17 is a plan view showing a paper feed cassette in a mounted state according to a sixth embodiment.

FIG. 18 is a plan view showing the automatic double-sided sheet feeding device in a mounted state.

FIG. 19 is a configuration diagram of a front cover and an RDF in a closed state.

FIG. 20: Front cover and RDF in open state
Configuration diagram

FIG. 21 is a configuration diagram of the sorter in a mounted state.

FIG. 22 is a block diagram of the sorter when it is separated from the main body of the copying machine.

FIG. 23 is a block diagram of a conventional digital copying machine when the second frame is opened.

FIG. 24 is a configuration diagram when the second frame is also closed.

[Explanation of symbols]

 40 Recording Device Main Body 55 Laser Recording Unit 58 Photoreceptor 81 First Frame 82 Horizontal Axis 83 Second Frame 90 First Lock Mechanism 101 Impact Damping Member 102 Second Lock Mechanism

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Noriyuki Sakurai 22-22 Nagaike-cho, Abeno-ku, Osaka-shi, Osaka

Claims (6)

[Claims] 1. A recording apparatus main body is composed of a first frame and a second frame which is openably and closably supported by the first frame, and the second frame is exposed to laser light according to an image signal to be exposed. In a laser recording apparatus equipped with a laser recording unit for irradiating a body, the laser recording unit is held by the second frame via a shock absorbing member, and the second frame is closed when the second frame is closed. And a second lock mechanism for locking the laser recording unit with respect to the second frame after being locked by the first lock mechanism. And laser recording device. 2. The laser recording apparatus according to claim 1, wherein unlocking by the second lock mechanism is performed before unlocking by the first lock mechanism. 3. The laser recording apparatus according to claim 1, wherein the unlocking by the second lock mechanism is performed before the second frame is fully opened. 4. The laser recording apparatus according to claim 1, wherein the lock is released by the second lock mechanism except during the recording operation. 5. The laser recording apparatus according to claim 1, wherein the unlocking by the second lock mechanism is performed when the laser recording apparatus is in a different state from a normal state. 6. One end of a second frame is supported by the first frame so as to be openable and closable about an axis, a first locking mechanism is disposed on the other end side of the second frame, and a second locking mechanism is the second frame. 2. It is arranged on one end side of the
The laser recording device described.