JPH09146324A - Laser recorder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To securely and effectively relieve shock and vibration applied to a laser recording unit, to accurately position the laser recording unit, and improve printing efficiency. SOLUTION: The laser recording unit 55 is supported by a second flame 83 via an shock cushioning member 101 made of hard rubber or the like. When the copying machine main body is moved or when it receives shock and vibration from outside, the shock cushioning member 101 absorbs the shock and vibration transmitted from the copying machine main body to the laser recording unit 55, to relieve the shock and vibration the laser recording unit 55 receives.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laser recording device such as a digital copying machine or a laser beam printer having a laser recording unit for scanning a laser beam according to an image signal and irradiating the photosensitive member with the laser beam, and more particularly to laser recording. Relating to the unit holding and positioning mechanism.

[0002]

2. Description of the Related Art In a conventional digital copying machine, a laser recording unit which scans a laser beam according to an image signal and irradiates a photosensitive member is fixed to the copying machine body with a screw or the like.

Further, in Japanese Patent Laid-Open No. 5-35057,
In a clamshell type image forming apparatus in which the apparatus main body can be divided and opened into an upper section and a lower section with a sheet conveying path as a boundary, an optical system unit is elastically displaceably attached to the upper section in a three-dimensional manner, It is disclosed that the optics unit is positioned by the positioning means when the upper section is closed.

[0004]

In the conventional digital copying machine in which the laser recording unit is always fixed to the copying machine body, when the copying machine body is moved or the copying machine body receives an impact or vibration from the outside. If so, the laser recording unit will be directly subjected to the shock and vibration. Further, in the case where the conventional digital copying machine is a clamshell type, when the main body of the copying machine is opened / closed in order to deal with a trouble such as paper jam, the laser recording unit receives the impact,
It will be subject to vibrations.

As described above, the laser recording unit receives a shock,
If the vibration is properly received, the semiconductor laser, the f-θ lens, the mirror, and the like, which are the components of the laser recording unit, may be displaced, and the irradiation position of the laser light may be displaced, which may adversely affect the image quality. In particular, during inertial rotation after the driving of the polygon motor, which is a component of the laser recording unit, is stopped, the high-speed rotating motor shaft, bearings, etc. are damaged by shock and vibration.

In the clamshell type image forming apparatus disclosed in JP-A-5-35057, the optical system unit is positioned when the upper section is closed. Therefore, when the main body is moved or the main body is impacted or vibrated from the outside. When the optical system unit receives its shock and vibration, when the optical system unit is displaceably attached to the upper section, the shock that the optical system unit receives when opening and closing the upper section, The vibration cannot be alleviated and the above-mentioned problems occur.

In view of the above, the present invention provides a laser recording apparatus capable of reliably and effectively mitigating shock and vibration to the laser recording unit, accurately positioning the laser recording unit, and improving printing efficiency. With the goal.

[0008]

According to the present invention, there is provided a laser recording device comprising a laser recording unit for scanning a laser beam according to an image signal and irradiating the photoconductor with the laser beam. Is supported by the main body of the recording apparatus via a shock absorbing member. Further, the 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 a shock absorbing member is interposed between the laser recording unit and the second frame. It is a thing. Thus, even if a shock or vibration is applied to the main body of the recording device when the laser recording device is moved or the second frame is opened or closed, the shock or vibration is mitigated by the shock absorbing member before being transmitted to the laser recording unit. .

Further, positioning means is provided for fixing the laser recording unit to a predetermined position with respect to the main body of the recording apparatus. Here, "if necessary" refers to the case where it is necessary to irradiate the appropriate irradiation position with laser light, such as during image quality adjustment or recording operation during installation or maintenance of the laser recording device. As a result, when the laser recording unit is positioned and fixed, the laser light can be applied to an appropriate irradiation position, and accurate image quality adjustment or good recording can be performed.

Then, the positioning means has a positional deviation correcting function for correcting a slight positional deviation of the laser recording unit. As a result, the laser recording unit is fixed at a predetermined position even if the laser recording unit is slightly vibrating or if the laser recording unit is slightly displaced due to shock or vibration.

Further, a process frame for rotatably holding the photoconductor is provided in the recording apparatus main body, and the positioning means has a function of positioning the laser recording unit with respect to the process frame as necessary. This improves the positional accuracy among the three members of the second frame, the photoconductor held by the process frame, and the laser recording unit.

Further, there is provided a cushioning degree adjusting means for adjusting the cushioning degree of the shock absorbing member according to the state of the laser recording apparatus. Here, according to the state of the laser recording device, in accordance with any one of the transportation state of the laser recording device, the installation standby state, the recording operation state,
Alternatively, depending on the operating state of the laser recording unit or the content of trouble that has occurred in the laser recording apparatus. As a result, the degree of cushioning the shock is gradually changed according to the state of the laser recording apparatus, and the shock and vibration received by the laser recording unit are effectively cushioned according to the situation.

Further, an auxiliary shock absorbing member is provided in the vicinity of the laser recording unit so that the laser recording unit which has been subjected to vibration or shock may come into contact with the laser recording unit. This allows
If the laser recording unit receives a large shock or vibration that exceeds the shock absorbing range of the shock absorbing member, such as when the laser recording device unexpectedly drops, or if the shock absorbing member malfunctions, the shock absorbing member vibrates. When the width and the movement width increase, the laser recording unit contacts the auxiliary shock absorbing member, and the shock and vibration are alleviated by both the shock absorbing member and the auxiliary shock absorbing member.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION

(First Embodiment) As shown in FIGS. 2 and 3, a digital copying machine, which is a laser recording apparatus according to a first embodiment of the present invention, has a copying machine main body 40, a scanner section 41, a laser printer section 42, and a paper feeding section. Unit 43 and sheet post-processing device (sorter)
44 is provided.

The scanner section 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 section 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. When the RDF 46 is used, it is located 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 unit 42 includes a manual document tray 54, a laser recording unit 55, and an electrophotographic process unit 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. Photoconductor 5
F-θ lens 5 for correction so that the light is deflected at a constant velocity on
9a, 59b, a mirror 60 for guiding laser light to the photoconductor 58
Etc.

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
3 is branched to a conveyance path 69 leading to the No. 3 and is switched by a reversing gate 70.

The sorter 44 is constructed so as to distribute the sheet on which the toner image has been fused to a plurality of bins 44a and discharge it, and to the left and right 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 conveyance path 69 is branched into a reverse conveyance path 69a used for double-sided copying in the paper feeding section 43 and a double-sided / composite conveyance path 69b used for double-sided copying and composite copying.

The paper feed section 43 is a drawer type paper feed cassette 7 mounted in the main body 40 of the copying machine so as to be able to be taken in and out in the front-back direction.
2 is provided. Then, the paper feeding section 43 has
The common transport path 73 is configured to feed the sheets of paper stored in the paper feed cassette 72 one by one from the top and transport them toward the electrophotographic process section 56. Further, the common conveyance path 73 is provided in the electrophotographic process section 56.
Reverse transportation path 69a, double-sided / composite transportation path 6 on the way to
9b and the conveying path 54a from the manual document tray 54, and is connected to the image forming position between the photoconductor 58 of the electrophotographic process unit 56 and the transfer peeling device 63.

In the figure, 74a and 74b are conveying rollers, 75 is a conveying belt, 76 is a discharging roller, and 77a and 7a.
Reference numerals 7b and 77c are paper detection sensors for detecting paper, 77d is a paper discharge sensor, and 78 is a conveyance guide.

In the digital copying machine thus constructed, the image data obtained by reading with 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, which is transferred onto the paper conveyed from the paper feeding section 43 and then fixed on the paper by the fixing device 66. . The sheet on which the image is formed in this manner is sent from the fixing device 66 to the sorter 44 via the transport path 67, or is transported to the paper feeding section 43 via the transport path 69 to be duplicated or composited. .

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 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 lock mechanism 90 that locks the second frame 83 with respect to the first frame 81 when the third frame 3 is closed is provided.

The lock mechanism 90 includes a second frame 83.
A rotation shaft 91 that is rotatably supported by
A lock lever 93 which is fixed to the rotary shaft 91 and engages with an engagement hole (not shown) formed in the locking plate 92 of the first frame 81; and a lock release lever fixed to the front end of the rotary shaft 91. 94 and an urging body (not shown) that urges the lock lever 93 in the engaging direction.

As a result, when the second frame 83 is closed, the lock lever 93 automatically engages with the engagement hole of the locking plate 92, and the first frame 81 and the second frame 83 are locked and locked. By operating the release lever 94, the rotary shaft 91 and the lock lever 93 integrally rotate, the lock lever 93 is released from the engagement hole, the lock is released, and the second frame 83 can be opened. It has become.

In such a clamshell type digital copying machine, the opening and closing of the second frame 83 causes a shock,
Laser recording unit 55 that is easily affected by vibration
On the other hand, when it is opened, a shock and vibration of several G are applied, and when it is closed, a shock and vibration of several tens of G are applied.

Therefore, in the first embodiment, the shock absorbing member 101 is interposed between the laser recording unit 55 and the second frame 83, so that the laser recording unit 55 can move the shock absorbing member 101 through the shock absorbing member 101. Two frames 8
The structure is supported by 3.

The laser recording unit 55 and the shock absorbing member 101 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. A polygon motor 114 for supporting the lens, f-θ lenses 59a and 59b, a mirror 60, and the like are arranged.

The shock absorbing member 101 is an elastic body made of hard rubber and is formed in a substantially cylindrical shape. One side is fixed to the unit main body 110 by the screw 102 and the other side is fixed to the second frame 83. When a strong shock or vibration is applied to the main body 40, it has a function of absorbing the shock or vibration so as not to be directly transmitted to the unit main body 110.

A total of four shock absorbing members 101 are interposed between the front and rear wall surfaces of the unit body 110 and the front and rear second frames 83.
One end side of the second frame 83 of 01, that is, the horizontal axis 82
The front and rear impact cushioning members 101 closer to are disposed between the horizontal shaft 82 and the polygon motor 114, and the second frame 83
The shock absorbing members 101 on the other end side, that is, on the front and rear sides far from the horizontal axis 82 are arranged between the lock mechanism 90 and the polygon motor 114.

Although the shock absorbing members 101 are arranged in front of and behind the unit main body 110, they may be arranged in the vertical and horizontal directions of the unit main body 110. In addition to the hard rubber, the shock absorbing member 101 may be an elastic body such as a spring, and may be shocked or vibrated on the unit main body 110 due to the opening / closing operation of the second frame 83 or during a recording operation (printing operation). The shock and vibration generated in the copying machine main body 40 or the shock and vibration to the unit main body 110 due to the movement of the RDF 46 and the like and the operation of the openable / closable member are alleviated.
Any member may be used as long as it is elastic enough to maintain the position of the laser recording unit 55.

As a result, when the copying machine main body 40 is moved, or when the copying machine main body 40 receives an impact or a vibration from the outside, the second frame 83 is provided for the trouble handling and maintenance such as paper jam. When opened and closed,
The shock and vibration transmitted from the main body 40 of the copying machine to the laser recording unit 55 is absorbed by the shock absorbing member 101, and the shock and vibration received by the laser recording unit 55 can be reduced.

Therefore, the f-θ lenses 59a and 59b and the mirror 60 which are components of the laser recording unit 55.
It is possible to prevent a problem that the image quality is adversely affected due to the positional deviation of the laser light and the like, and the irradiation position of the laser beam being displaced.

In particular, even when vibration or shock is applied to the main body 40 of the copying machine during inertial rotation after the polygon motor 114 is stopped, it is possible to prevent damage to the shock and vibration-sensitive portions of the high-speed rotating motor shaft and bearings. .

(Second Embodiment) The laser recording unit is required to irradiate the photoconductor 58 without displacement during image quality adjustment and printing during installation and maintenance of the digital copying machine. It is necessary to fix 55 in place.

Therefore, in the second embodiment, as shown in FIG.
As described above, the positioning means 116 is provided to fix the laser recording unit 55 to the second frame 83 at a predetermined position where the laser beam is irradiated to the proper irradiation position.

The positioning means 116 is located closer to the one end side of the second frame 83 than the lock mechanism 90, that is, closer to the horizontal axis 82, and is provided one by one in the front and rear so as to sandwich the laser recording unit 55. The second frame 83 and the mounting frame 117 facing the second frame 83 are respectively interposed.

The positioning means 116 includes a pair of left and right positioning shafts 120 which can be fitted into a pair of left and right fitting holes 118 formed in the front and rear wall surfaces of the unit body 110 corresponding to the shock absorbing member 101. A biasing body 121 that biases the positioning shaft 120 in a direction away from the fitting hole 118;
The positioning shaft 120 is configured to include a drive unit 122 for moving the positioning shaft 120 in a direction to be fitted in the fitting hole 118 or in a direction to be separated from the fitting hole 118. 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 positioning shaft 120 is the second frame 8
3 through the circular through hole 10 of each shock absorbing member 101
1a is movably fitted into the fitting hole 118 and has a conical shape so that one end fits into the fitting hole 118 and comes into pressure contact with the hole wall of the fitting hole 118, and a brim portion 120a is formed at the other end. As shown in FIG. 5, the outer diameter D1 of the positioning shaft 120 is larger than the inner diameter D2 of the fitting hole 118.

As a result, even if the laser recording unit 55 is slightly vibrating, or if the laser recording unit 55 is slightly displaced due to shock or vibration, one end of the conical shape of the positioning shaft 120 is fitted into the circular fitting hole 118. When they are aligned, the inclined surface at one end presses the hole wall of the fitting hole 118 in the direction opposite to the displacement direction to correct the displacement of the laser recording unit 55, and the laser recording unit 55 with respect to the second frame 83. Can be securely fixed in place. That is, the positioning means 116 includes the laser recording unit 55.
It has a position deviation correction function for correcting some position deviation. The through hole 101a of the shock absorbing member 101 has a function as a guide when the positioning shaft 120 moves, so that the through hole 101a can be surely guided to the fitting hole 118 while correcting some distortion of the positioning shaft 120. ing.

The urging body 121 is a coil spring into which the positioning shaft 120 is inserted, and is interposed between the second frame 83 and the flange portion 120a of the positioning shaft 120.

The driving part 122 includes a rotary shaft 125 rotatably supported by bearings 124 on a pair of left and right U-shaped mounting plates 123 which are provided between the second frame 83 and the mounting frame 117. The rotary shaft 125 includes a pair of left and right circular cams 126 fixed to the flange 120a of the positioning shaft 120 and a stepping motor 127 that rotationally drives the rotary shaft 125. The brim portion 120a of the positioning shaft 120 and the circular cam 126 are always in contact with each other due to the biasing force of the coil spring 121. Further, the gear 1 attached to one end of the rotary shaft 125
28 and a motor gear 129 attached to the motor shaft of the stepping motor 127 mesh with each other, whereby the driving force of the stepping motor 127 is applied to the rotating shaft 125.
It is transmitted to.

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, so that the positioning shaft 120 causes the coil spring 121 to rotate as the circular cam 126 rotates. It is configured to move in the direction in which it is fitted in the fitting hole 118 against the biasing force of the coil spring or in the direction in which it is separated from the fitting hole 118 by utilizing the biasing force of the coil spring 121. That is, the amount of movement of the positioning shaft 120 can be determined by the amount of rotation of the circular cam 126.

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 117. As a result, the rotating shaft 12 is detected according to the number of detections by the photo sensor 131.
It is possible to detect the rotation amount of 5 or the rotation amount of the circular cam 126, and the movement amount of the positioning shaft 120 can be recognized based on this. Therefore, the position where the positioning shaft 120 fits into the fitting hole 118 or the fitting hole 1
The number of detections (set number) of the photo sensor 131 corresponding to the position separated from 18 is set in advance, and the position control of the positioning shaft 120 is possible.

Further, in the digital copying machine, the stepping motor 12 of the positioning means 116 is used according to various conditions.
A control unit including a microcomputer for driving and controlling 7 is provided. This control unit has a function of driving and controlling the stepping motor 127 so that the positioning shaft 120 of the positioning unit 116 fits into the fitting hole 118 (positioning and fixing the laser recording unit 55) when the printing operation starts, and printing. It has a function of driving and controlling the stepping motor 127 so that the positioning shaft 120 of the positioning means 116 separates from the fitting hole 118 (releasing the positioning of the laser recording unit 55) after a lapse of a predetermined time from the end of the operation. There is. A function of driving and controlling the stepping motor 127 may be added to position and fix the laser recording unit 55 at the time of image quality adjustment at the time of installation or maintenance.

Here, the start of the printing operation means that when an operation key for performing a printing operation on an operation panel (not shown) is operated, in the case of a digital copying machine having a facsimile printer function, an external signal is given. When an incoming call arrives, the paper detection sensor 77a on the upstream side of the main transport path 80 detects (turns on) the paper, and the control unit recognizes this and determines the start of the printing operation. The end of the printing operation means that the paper detection sensor 77c on the downstream side detects the paper (ON).
After that (off), the control unit recognizes this and determines the end of the printing operation. The drive control of the stepping motor 127 is performed by the photo sensor 1
This is done by driving the stepping motor 127 until the number of detection times of 31 reaches each set number of times.

Further, the reason why the positioning of the laser recording unit 55 is canceled after a lapse of a predetermined time after the printing operation is finished is that if the positioning is canceled immediately after the printing operation is finished, continuous printing is performed. Stepping after the printing operation is completed, such as when performing the printing operation again within a short time after the start of printing, when performing individual printing multiple times in succession, when performing normal printing immediately after trial printing, etc. When the motor 127 is driven to release the positioning and start the next printing operation, it is necessary to drive the stepping motor 127 again to fix the positioning. This causes a large time loss, a long printing time, and a high printing efficiency. Because it gets worse. Further, when the driving of the laser recording unit 55 (the driving of the polygon motor 114) is stopped after the printing operation is completed, the polygon motor 114 is inertially rotated at a high speed. Since there is a risk of damage to the bearings and the like, the positioning is released after a predetermined time when inertial rotation is stopped.

In the above structure, when the printing operation is started, the stepping motor 1 is moved in the positioning means 116.
27 is driven, and the positioning shaft 120 moves in the direction of fitting into the fitting hole 118 against the biasing force of the coil spring 121 as the rotating shaft 125 and the circular cam 126 rotate. That is, the positioning unit 116 moves from the positioning release posture shown in FIG. 6A in which the positioning shaft 120 is separated from the fitting hole 118 to the intermediate posture shown in FIG.
20 is fitted into the fitting hole 118 and is pressed against the hole wall of the fitting hole 118, and is switched to the positioning and fixing posture shown in (c),
The laser recording unit 55 is positioned and fixed to the second frame 83. Then, when the laser recording unit 55, the photoconductor 58, etc. are operated to perform the printing operation, and the paper after transfer and peeling is conveyed, the paper detection sensor 77c is turned on, and the paper detection sensor 77c is passed by the passage of the paper. When is turned off, the timer of the control unit measures a predetermined time.

When a predetermined time has passed, the positioning means 11
6, the stepping motor 127 is driven, and the positioning shaft 120 is urged by the coil spring 121 in accordance with the rotation of the rotary shaft 125 and the circular cam 126, and the fitting hole 118.
Move in the direction away from. That is, the positioning means 116 moves from the positioning fixed posture shown in FIG.
The intermediate posture shown in (b) is switched to the positioning release posture shown in (a), and the positioning of the laser recording unit 55 with respect to the second frame 83 is released. When the printing operation is started again before the elapse of a predetermined time after the printing operation is completed, the positioning unit 116 maintains the positioning fixed posture, and the next printing operation can be smoothly performed. 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, since the positioning means 116 for fixing the laser recording unit 55 to the predetermined position with respect to the second frame 83 is provided, at the time of image quality adjustment and printing at the time of installation and maintenance of the digital copying machine. When the laser recording unit 55 is positioned and fixed, the laser beam can be applied to an appropriate irradiation position, accurate image quality adjustment can be performed, and good image quality can be obtained to improve printing performance. Moreover, when the positioning of the laser recording unit 55 is released, the shock and vibration received by the laser recording unit 55 can be mitigated.

Further, the positioning means 116 has a positional deviation correcting function for correcting a slight positional deviation of the laser recording unit 55, and therefore, the positioning means 116 is slightly affected by minute vibration of the laser recording unit 55, shock, or vibration. The laser recording unit 55 can be fixed at a predetermined position even if the position shift occurs.
It is possible to maintain good position accuracy and stably obtain good image quality.

Further, if the laser recording unit 55 is positioned and fixed when the printing operation is started and the positioning of the laser recording unit 55 is released after a predetermined time has elapsed after the printing operation is completed, the printing performance is improved and the printing performance is improved. Time loss is reduced and printing efficiency is improved.

(Third Embodiment) In the third embodiment, as shown in FIG. 7, a process frame 140 for rotatably holding the photosensitive member 58 is detachably fixed to the second frame 83 by a screw 141. There is. Generally, the photoconductor 5
Since the process frame 140 holding 8 is accurately positioned on the second frame 83, by positioning the laser recording unit 55 not only on the second frame 83 but also on the process frame 140, the second frame 83 The positional accuracy among the three members, that is, the photoconductor 58 held by the process frame 140 and the laser recording unit 55, is improved. Therefore, the positioning means 116
The laser recording unit 55 to the process frame 140
The function to position is also added to.

The process frame 140 will be described first. The process frame 140 includes the photoconductor 58.
Is located below the laser recording unit 55 so as to sandwich it from the front and back, and as shown in FIG.
The upper end of 0 is arranged in front of the second frame 83 on the front side,
The upper end of the rear process frame 140 is arranged in front of the rear second frame 83. The upper end of the process frame 140 on the front side and the second frame 83 on the front side are arranged in parallel without a gap, and the process frame 14 on the rear side is
The upper end of 0 and the second frame 83 on the rear side are arranged in parallel with a gap.

Next, the positioning means 116 will be described. In the front and rear positioning means 116, the flange portion 120a of the positioning shaft 120 farther from the other end of the second frame 83, that is, the horizontal shaft 82 is vertically extended, and the lower end of the flange portion 120a is parallel to the positioning shaft 120. The auxiliary positioning shaft 143 is provided so as to project, and the other end side of the second frame 83 has a two-axis integrated structure in which the positioning shaft 120 and the auxiliary positioning shaft 143 move in parallel at the same time.

The auxiliary positioning shaft 143 on the front side is
One end has a conical shape, and the front process frame 1
A notch 144 as shown in FIG. 9 formed in 40 is inserted to penetrate the second frame 83 on the front side. The rear auxiliary positioning shaft 143 has a conical shape at one end, and penetrates the rear second frame 83 to form an opening 1 in the rear process frame 140 as shown in FIG.
It can be inserted into 45. Here, the notch 144 is
As shown in FIG. 9, in consideration of attachment / detachment of the process frame 140, the process frame 140 is formed in a U shape with an open upper portion so that the process frame 140 can be inserted / removed in / from the auxiliary positioning shaft 143 in the vertical direction. In addition, the opening 145 is simply formed in a circular shape because it does not interfere with the auxiliary positioning shaft 143 when the positioning unit 116 is in the positioning release posture (described later).

As a result, when the stepping motor 127 is driven, the positioning shaft 120 and the auxiliary positioning shaft 143 are rotated along with the rotation of the rotary shaft 125 and the circular cam 126.
Move at the same time, and the other end side of the second frame 83 in the positioning means 116 is switched between the positioning release attitude shown in FIG. 8A and the positioning fixed attitude shown in FIG. 8B. In the fixed positioning posture, the positioning shaft 12
By fitting 0 into the fitting hole 118 of the laser recording unit 55, the laser recording unit 55 is positioned and fixed with respect to the second frame 83, and the auxiliary positioning shaft 14
By inserting 3 into the notch 144 and the opening 145, the laser recording unit 55 is also positioned with respect to the process frame 140.

In the position releasing state, the positioning shaft 120 is separated from the fitting hole 118, and the positioning shaft 120 and the auxiliary positioning shaft 143 can be finely moved in the vertical direction regardless of the laser recording unit 55. If the process frame 140 is attached to the second frame 83 in this position release posture, the laser recording unit 5
It is possible to prevent the process frame 140 from being displaced due to its own weight. Other configurations and operations are the same as those in the second embodiment, and members having the same functions as those in the second embodiment are designated by the same reference numerals.

As described above, since the positioning means 116 has a function of positioning the laser recording unit 55 also with respect to the process frame 140, the laser is used during image quality adjustment and printing during installation and maintenance of the digital copying machine. When the recording unit 55 is positioned and fixed, the positional accuracy among the three members of the second frame 83, the photoconductor 58 held by the process frame 140, and the laser recording unit 55 is improved. Along with this, it is possible to surely irradiate the appropriate irradiation position with the laser light, more accurate image quality adjustment can be performed, and better image quality can be obtained. Moreover, when the positioning of the laser recording unit 55 is released, the shock and vibration received by the laser recording unit 55 can be mitigated.

(Fourth Embodiment) The positioning means 116 in the second embodiment is switched to the positioning release posture shown in FIG. 6A, the intermediate posture shown in FIG. 6B, and the positioning fixed posture shown in FIG. 6C. The replacement has been described. When the posture is switched, the stepping motor 127 drives the positioning shaft 120 to move in the through hole 101a of the shock absorbing member 101. Accordingly, in the position releasing position, the acting length of the shock absorbing member 101 becomes L1. As a result, the elastic displacement amount becomes large, and the shock absorbing effect of the shock absorbing member 101 can be sufficiently exerted. In the intermediate posture, the action length of the shock absorbing member 101 becomes L2, which is smaller than L1, and the elastic displacement amount becomes small, so that the shock absorbing effect of the shock absorbing member 101 can be slightly exhibited. In the positioning and fixed posture, the shock absorbing member 101 has almost no working length, and the shock absorbing effect of the shock absorbing member 101 cannot be exerted. From these things, the positioning means 116 is
It can also serve as a cushioning degree adjusting means for adjusting the cushioning degree by the impact cushioning member 101.

Therefore, in the fourth embodiment, the control unit controls the positioning means 116 as the cushioning degree adjusting means according to the state of the digital copying machine (transport state of the digital copying machine, standby state for installation, printing operation state). It has a function of driving and controlling the stepping motor 127. The drive control of the stepping motor 127 is performed by the photo sensor 13
Positioning release posture in which the number of detection times of 1 is preset,
Positioning shaft 120 in intermediate posture and fixed positioning posture
The stepping motor 127 is driven until the number of detections (reference number) corresponding to the position of is reached.

The transportation state is until the digital copying machine is transported to the end user and installed at a predetermined place,
The control unit recognizes a special operation such as a simulation mode performed when the digital copying machine is shipped, and determines that the digital copying machine is in the transportation state. In this transportation state, the copying machine main body 40 is most likely to be subjected to a large shock and vibration, and therefore the laser recording unit 55 is also frequently subjected to a large shock and vibration, which may cause the polygon motor 114 to be broken or the like. Therefore, the stepping motor 127 is driven to bring the positioning means 116 as the cushioning degree adjusting means into the positioning canceling posture, and the shock absorbing member 101
The buffering degree due to is increased.

The installation standby state is from the time the power is turned on after the digital copying machine is installed to the time when the printing operation starts and the time when the printing operation ends and the next printing operation starts. Being in the installation standby state by the control unit recognizing until the operation key for printing operation is operated, or in the case of a digital copying machine equipped with a facsimile printer function, until an external signal is received. Is judging. In the installation standby state, the stepping motor 127 is driven to bring the positioning means 116 as the cushioning degree adjusting means to the intermediate posture,
The shock-absorbing member 101 reduces the shock-absorbing degree.

The print operation state is from the start to the end of the print operation, and the control section recognizes the start and end points of the print operation described in the second embodiment to indicate the print operation state. Deciding. In this printing operation state, the stepping motor 127 is driven to bring the positioning means 116 as the cushioning degree adjusting means into the positioning and fixing posture, and the laser recording unit 55 is fixed so that the laser light is irradiated to the appropriate irradiation position. ing.

The reason why the intermediate posture is set in the installation standby state is that the laser recording unit 55 may be impacted and vibrated even in the installation standby state, but it is less frequently than in the transportation state. Even in such a case, if the positioning canceling posture in which the cushioning degree by the shock absorbing member 101 is large is set, it is necessary to switch from the positioning canceling posture to the positioning fixed posture when the printing operation is started, resulting in a large time loss and printing. Since the time becomes longer, the shock and vibration received by the laser recording unit 55 can be alleviated, and the intermediate position can be quickly switched to the positioning fixed attitude, so that the shock and vibration received by the laser recording unit 55 can be alleviated and the printing efficiency is improved. This is because both can be achieved. Further, in the printing operation state, it is not always necessary to fix the laser recording unit 55 with the positioning means 116 in the positioning fixed posture, and for example, the working length of the shock absorbing member 101 is smaller than the working length L2 in the intermediate posture. By setting as described above, the laser recording unit 55 may be in a buffer holding state as close as possible to the fixed state without affecting the irradiation of the laser beam. Other configurations and operations are the same as those in the second embodiment, and members having the same functions as those in the second embodiment are designated by the same reference numerals.

As described above, the state of the digital copying machine (transportation state of the digital copying machine, installation standby state, printing operation state)
By providing a cushioning degree adjusting means for adjusting the cushioning degree of the impact cushioning member 101 according to the above, it is possible to effectively alleviate the impact and vibration received by the laser recording unit 55.

(Fifth Embodiment) Laser recording unit 5
The impact resistance and vibration resistance of the polygon motor 114 of No. 5 differ depending on the strength of the bearing of the motor shaft and the rotation state, and the rotation state is weaker at high speed rotation and stronger at low speed rotation.

Therefore, in the fifth embodiment, the control unit controls the state of the digital copying machine (laser recording unit 55).
Has a function of driving and controlling the stepping motor 127 of the positioning means 116 as the cushioning degree adjusting means in accordance with the operating state of (1), particularly the rotation speed of the polygon motor 114).

Here, a method of detecting the rotation speed of the polygon motor 114 will be described with reference to FIG. In the laser recording unit 55 shown in FIG. 11, the parallel laser beam condensed from the semiconductor laser and the collimator lens 112 passes through the cylindrical lens 113 that corrects the surface tilt of the polygon mirror 57 and is supported by the polygon motor 114. The laser light that reaches the polygon mirror 57 and is reflected here is spot-focused on the photoconductor 58 by the f-θ lenses 59a and 59b. At this time, part of the laser light is B
The light is reflected by the D mirror 150, condensed by the BD condenser lens 151, and detected by the BD substrate 152. The BD signal obtained by the BD substrate 152 at this time is used to determine the presence of laser light and to know the detection of the laser start timing. Therefore, the BD obtained with this BD substrate 152
The number of revolutions of the polygon motor 114 is determined based on the signal.
That is, since the laser start timing is always detected by the BD substrate 152, the polygon motor 11
The rotation speed of 4 can be calculated and detected from the number of times the laser light reaches the BD substrate 152 within a certain period of time, that is, the number of BD signals obtained by the BD substrate 152 within a certain period of time.

The polygon motor 11 thus detected
If the rotation speed of 4 is high, the stepping motor 127 is driven to bring the positioning means 116 as the cushioning degree adjusting means to the positioning release posture, and the shock absorbing member 101 increases the cushioning degree. If the rotation speed is slow, the stepping motor 127 is driven to bring the positioning means 116 as the cushioning degree adjusting means to the intermediate posture,
The shock-absorbing member 101 reduces the shock-absorbing degree. It should be noted that the above-mentioned control is performed except for the printing operation, and during the printing operation, the positioning means 116 as the cushioning degree adjusting means is set to the positioning fixed posture,
Improves printing performance. The state in which the polygon motor 114 is rotating in addition to the printing operation is mainly an inertial rotation state after the driving of the polygon motor 114 is stopped. Other configurations and operations are similar to those of the fourth embodiment, and members having the same functions as those of the fourth embodiment are designated by the same reference numerals.

As described above, the shock absorbing member 10 is used depending on the state of the digital copying machine (the number of rotations of the polygon motor 114).
By providing a cushioning degree adjusting means for adjusting the cushioning degree by 1, the shock and vibration received by the laser recording unit 55 can be effectively mitigated. In particular, the shock and vibration of the motor shaft and bearings of the polygon motor 114 can be reduced. It is possible to reliably prevent damage to weak points.

(Sixth Embodiment) When an abnormality (trouble) occurs in the digital copying machine, the laser recording unit 55 receives a large shock or vibration during the trouble processing depending on the content of the trouble, or almost shock or vibration. Or not.

Therefore, in the sixth embodiment, the control section has a function of controlling the driving of the stepping motor 127 of the positioning means 116 as the cushioning degree adjusting means in accordance with the state (trouble content) of the digital copying machine. ing.

Here, there are the following cases as troubles of the digital copying machine. Light troubles include, for example, paper jams in each paper transport path of a digital copying machine,
Examples include running out of paper in the paper feeding cassette 72, leaving the front cover (not shown) arranged on the front surface of the copying machine main body 40 openable and closable, and running out of toner in the developing device 62. The above-mentioned troubles are detected by each paper detection sensor provided on each paper conveyance path, a paper detection sensor provided corresponding to the paper feed cassette 72, a door switch for detecting opening / closing of the front cover, and a developing device 62. It can be detected by a signal from the toner sensor or the like.

Examples of serious troubles include motor lock, scanner trouble, fixing trouble, communication trouble,
Laser troubles can be cited. The motor lock can be detected by a signal from an encoder that detects the rotation speed attached to each motor, and an error is generated when the rotation speed decreases. The detection of the scanner trouble can be detected by a signal from a detection sensor attached to the home position of the scanner unit 47. When the scanner unit 47 operates, the scanner trouble is detected again within a predetermined time. The error is when it cannot be detected. The fixing trouble can be detected by a signal from a thermistor attached to the roller of the fixing device 66, and when the temperature of the roller is a preset abnormal temperature, it is regarded as an error. The communication trouble can be detected from the communication state between the control and processing boards of the digital copying machine, and an error is generated when no reply is received for the command / data transmission.
The laser trouble is detected by the B of the laser recording unit 55.
When the BD signal obtained by the D substrate 152 is not detected within a predetermined time, it is determined as an error and a trouble is determined.

Of the above trouble contents, the copying machine main body 4
0 paper jam that can be removed from the outside, out of paper in the paper feed cassette 72, left with the front cover open,
In the case of communication trouble, the second frame 83 of the copying machine main body 40
It is not necessary to open the paper cassette, and trouble handling can be performed by inserting / removing the paper feed cassette 72, turning on / off the power of the digital copying machine, or the like. In the case of such trouble handling, the shock and vibration received by the laser recording unit 55 are small, and the shock absorbing member 101 may have a small shock absorbing degree even during inertial rotation after the polygon motor 114 is stopped.

On the other hand, if paper jam inside the copying machine body 40 that cannot be removed from the outside of the copying machine body 40, toner running out in the developing device 62, motor lock, fixing trouble, laser trouble, etc., the second frame 83 must be used. It needs to be opened, and the number of times of opening / closing, shock and vibration cannot be predicted. In the case of such trouble handling, the laser recording unit 5
The shock and vibration received by the shock absorber 5 are large, and it is necessary to increase the shock absorbing degree by the shock absorbing member 101.

Here, when the paper is jammed, it may or may not be necessary to open the second frame 83. Therefore, a specific description will be given. Second frame 8 in case of paper jam
The need to open 3 depends on where the paper jam is occurring. That is, the determination can be made based on the on / off states of the paper detection sensors 77a, 77b, 77c and the paper discharge sensor 77d shown in FIGS. If the paper detection sensor 77a is off and the other paper detection sensors 77b and 77c are also off, and the paper detection sensor 77a has never been turned on, the leading edge of the jammed paper is the paper detection sensor. It is located between 77a and the transport roller 74a. At this time, if the paper is fed from the manual feed original tray 54, the paper jam can be removed from the outside without directly opening the second frame 83. Also, the paper feed unit 4
If the paper is fed from 3, the paper can be removed by inserting and removing the paper feed cassette 72 and opening the transport guide 78 without opening the second frame 83.

When the paper detection sensor 77c is off and the paper discharge sensor 77d is on, the jammed paper is not caught by the heat roller of the fixing device 66, and most of the paper is located inside the sorter 44. In this case, it can be removed by moving the sorter 44. Therefore, in the above-mentioned case, it is not necessary to open the second frame 83, and the second frame 83 must be opened in other cases, and at the time of paper jam, each paper detection provided in each conveyance path is detected. The necessity of opening the second frame 83 is determined by the on / off state of the sensor.

From these facts, it is determined whether or not the opening operation of the second frame 83 is involved in the trouble processing with respect to the trouble content, and the shock that may occur in the trouble processing.
The degree of cushioning by the shock absorbing member 101 against vibration is stored in advance in the memory of the control unit, and when various troubles are detected, the degree of shock absorbing by the shock absorbing member 101 is adjusted according to the stored items.

For example, when the opening operation of the second frame 83 is involved, the stepping motor 127 is driven to bring the positioning means 116 as the cushioning degree adjusting means into the positioning release posture, whereby the shock absorbing member 101 absorbs the shock. To increase. Even when the second frame 83 is opened, the time from the occurrence of the trouble to the opening operation is measured, and the longer the time is, the polygon motor 11
Since the inertial rotation after the driving of No. 4 is slowed down and the cushioning degree can be reduced, the shock and vibration can be effectively mitigated by adjusting the cushioning degree by the cushioning degree adjusting means according to the time. . In addition, the second frame 83
When the opening operation is not performed, the cushioning degree of the shock absorbing member 101 is reduced by setting the positioning unit 116 to the intermediate posture.

In the simulation mode or the like, when a serviceman gives a shock or vibration on a trial basis, when the focus adjustment such as the image quality or the like is checked, or when various contents are checked, or when the operation of the buffer degree adjusting means is checked. Etc.,
The cushioning degree adjusting means can be operated arbitrarily. Other configurations and operations are the same as those in the fifth embodiment, and members having the same functions as those in the fifth embodiment are designated by the same reference numerals.

As described above, by providing the cushioning degree adjusting means for adjusting the cushioning degree of the impact cushioning member 101 according to the state (content of trouble) of the digital copying machine,
The shock and vibration received by the laser recording unit 55 can be effectively reduced. In addition, unnecessary adjustment of the cushioning degree (for example, adjustment to increase the cushioning degree by the shock absorbing member 101 even when the second frame 83 is not open) is eliminated, and the time to start printing after the trouble processing is shortened. Is possible.

(Seventh Embodiment) In the seventh embodiment, as shown in FIG. 12, a pair of front and rear auxiliary shock absorbing members 16 are provided between the second frame 83 and the laser recording unit 55.
0 is interposed. The auxiliary shock absorbing member 160 is
It is located between the left and right shock absorbing members 101 on the front side and the rear side, respectively, and one side is formed in a U shape so as to cover the front side or the rear side wall surface of the unit main body 110 of the laser recording unit 55 from above and below, and the other side is a screw 161. It is fixed to the second frame 83 by.

As shown in FIG. 12B, one side of the auxiliary shock-absorbing member 160 is arranged close to the unit main body 110 in the vertical and longitudinal directions with a distance L3 therebetween, and the distance L3 is the shock-absorbing member 101. This corresponds to the buffer allowable range (vibration width, movement width) of.

As a result, when the laser recording unit 55 is not shocked or vibrated under normal conditions, or when the laser recording unit 55 is shocked or vibrated within the shock absorbing range of the shock absorbing member 101, the unit main body 110 receives an auxiliary shock. The shock absorbing member 101 absorbs shock and vibration without coming into contact with the shock absorbing member 160. On the other hand, when the laser recording unit 55 receives a large shock or vibration that exceeds the shock absorbing range of the shock absorbing member 101, such as when the digital copying machine unexpectedly drops, or when the shock absorbing member 101 malfunctions (for example, Due to loosening of the screw 102 for fixing the shock absorbing member 101, deterioration of the shock absorbing member 101 over time, and the like, the vibration width and movement width of the shock absorbing member 101 become a distance L3 or more, and the unit main body 110 causes the auxiliary shock absorbing member 160. The shock absorbing member 101 and the auxiliary shock absorbing member 160 both absorb shock and vibration.

Although the auxiliary shock absorbing member 160 uses the same hard rubber as the shock absorbing member 101, a member having an elastic constant different from that of the shock absorbing member 101 may be used. 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, by providing the auxiliary shock absorbing member 160, it is possible to surely prevent a problem that the laser recording unit 55 is subjected to a large shock or vibration due to the limit of the shock absorbing member 101's cushioning allowance or a malfunction, and the reliability is improved. It is possible to provide a highly shock-resistant shock absorbing structure.

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 laser beam printer or a facsimile having a laser recording unit, and need not be a clamshell type. Further, the respective embodiments may be combined as appropriate to reduce the impact and vibration on the laser recording unit. Further, the shock absorbing member may be driven by hydraulic pressure or air pressure as a damper. Further, the drive unit for moving the positioning shaft may be a solenoid instead of the cam or the stepping motor.

[0093]

As is apparent from the above description, according to the inventions of claims 1 and 2, when the main body of the recording apparatus is moved,
Alternatively, when the recording device body receives an impact or vibration from the outside, or when the second frame is opened / closed for troubleshooting or maintenance such as paper jam, the impact or vibration transmitted from the recording device body to the laser recording unit is The shock absorbing member absorbs the shock and vibration received by the laser recording unit.

As a result, it is possible to prevent such 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.

In particular, even when vibration or shock is applied to the main body of the recording apparatus during inertial rotation after the driving of the driving unit (for example, polygon motor) in the laser recording unit is stopped, the shock and vibration of the motor shaft and bearings rotating at high speed are increased. It can prevent damage to weak areas.

According to the third aspect of the present invention, if the laser recording unit is positioned and fixed during image quality adjustment and recording during installation and maintenance of the laser recording apparatus, the laser beam can be radiated to an appropriate irradiation position, and the laser beam can be accurately radiated. The image quality can be adjusted, and good image quality can be obtained to improve the printing performance. Moreover, when the positioning of the laser recording unit is released, the shock and vibration received by the laser recording unit can be mitigated.

According to the fourth aspect of the invention, even if the laser recording unit is slightly vibrated, or even if it is slightly displaced due to shock or vibration, the positional displacement of the laser recording unit is corrected and the predetermined position is corrected. The position accuracy of the laser recording unit can be maintained, and good image quality can be stably obtained.

According to the fifth aspect of the present invention, when the laser recording unit is positioned and fixed during image quality adjustment and recording during installation and maintenance of the laser recording device, the recording device main body, the photoconductor held by the process frame, and the laser recording unit. The positional accuracy among the three is improved, and accordingly, the laser light can be reliably applied to the appropriate irradiation position,
It is possible to perform more accurate image quality adjustment and obtain better image quality. Moreover, when the positioning of the laser recording unit is released, the shock and vibration received by the laser recording unit can be mitigated.

According to the sixth aspect of the invention, the shock and vibration received by the laser recording unit can be effectively mitigated according to the situation by adjusting the degree of buffering by the shock buffering member according to the state of the laser recording apparatus. You can

According to the seventh aspect of the present invention, by providing the auxiliary shock absorbing member, it is possible to surely prevent a problem that the laser recording unit is subjected to a large shock or vibration due to the limit of buffering allowance of the shock absorbing member and malfunction. It is possible to provide a highly reliable shock absorbing structure.

[Brief description of the drawings]

FIG. 1 is a plan view of a laser recording unit according to a first embodiment of the present invention.

FIG. 2 is a block diagram of a digital copying machine when a second frame is closed.

FIG. 3 is a block diagram of a digital copying machine when the second frame is opened.

FIG. 4 is a transverse cross-sectional view around a positioning unit according to a second embodiment.

FIG. 5 is a diagram showing the relationship between the outer diameter of the positioning shaft and the inner diameter of the fitting hole.

6A is a diagram showing a positioning release posture of the positioning means, FIG. 6B is a diagram showing an intermediate posture of the positioning means, FIG.
FIG. 7C is a diagram showing a positioning and fixing posture of the positioning means.

FIG. 7 is a block diagram of a digital copying machine when the second frame is closed in the third embodiment.

FIG. 8A is a diagram showing a positioning releasing posture of the positioning unit, and FIG. 8B is a diagram showing a positioning fixing posture of the positioning unit.

FIG. 9 is a view showing a notch

FIG. 10 is a diagram showing an opening.

FIG. 11 is a plan view of a laser recording unit according to a fifth embodiment.

12A and 12B are views showing a laser recording unit provided with an auxiliary shock absorbing member, in which FIG. 12A is a plan view and FIG. 12B is a side view.

[Explanation of symbols]

 40 main body of recording apparatus 55 laser recording unit 58 photoconductor 81 first frame 83 second frame 101 shock absorbing member 116 positioning means (buffer degree adjusting means) 140 process frame 160 auxiliary shock absorbing member

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

Claims (7)

[Claims] 1. A laser recording device comprising a laser recording unit for scanning a laser beam according to an image signal and irradiating the photoconductor with the laser beam, wherein the laser recording unit is supported by a recording device main body via a shock absorbing member. A laser recording device characterized by the above. 2. The recording apparatus main body comprises a first frame and a second frame which is openably and closably supported by the first frame, and a shock absorbing member is provided between the laser recording unit and the second frame. The laser recording device according to claim 1, wherein the laser recording device is interposed. 3. A laser recording apparatus according to claim 1, further comprising a positioning means for fixing the laser recording unit to a predetermined position with respect to the main body of the recording apparatus. 4. The laser recording apparatus according to claim 3, wherein the positioning means has a positional deviation correction function for correcting a slight positional deviation of the laser recording unit. 5. A process frame for rotatably holding a photoconductor is provided in a recording apparatus main body, and the positioning means has a function of positioning the laser recording unit also with respect to the process frame as necessary. The laser recording device according to claim 3. 6. The laser recording apparatus according to claim 1, further comprising a cushioning degree adjusting means for adjusting a cushioning degree of the shock absorbing member according to a state of the laser recording apparatus. 7. The laser recording apparatus according to claim 1, further comprising an auxiliary shock absorbing member provided in the vicinity of the laser recording unit so that the laser recording unit subjected to vibration or shock may come into contact with the laser recording unit.