CN105644156B - A kind of laser marking machine - Google Patents
A kind of laser marking machine Download PDFInfo
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- CN105644156B CN105644156B CN201511019621.5A CN201511019621A CN105644156B CN 105644156 B CN105644156 B CN 105644156B CN 201511019621 A CN201511019621 A CN 201511019621A CN 105644156 B CN105644156 B CN 105644156B
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- mark
- laser
- speculum
- marked
- thing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/435—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of radiation to a printing material or impression-transfer material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
- B41J29/38—Drives, motors, controls or automatic cut-off devices for the entire printing mechanism
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- Laser Beam Processing (AREA)
- Laser Surgery Devices (AREA)
Abstract
The invention discloses a kind of laser marking machine, including laser output device and mark control device；The laser output device is used to export mark laser；The mark control device inserts the inside of the thing that is marked, for receiving the mark laser and the mark laser being got to the inner surface of the thing that is marked；The mark control device is additionally operable to control the mark laser to get to the mark point formed on the thing that is marked in the first direction or second direction movement, wherein, the optical path distance between the field lens of mark control device and mark point is equal to the focal length and the first numerical value sum of field lens.Through the above way, the present invention can carry out two-dimentional mark to the inner surface of the thing that is marked, and its pattern got becomes apparent from, and mark quality is higher.
Description
Technical field
The present invention relates to technical field of mechanical design, more particularly to a kind of laser marking machine.
Background technology
Laser marking machine refers to stamp pattern, trade mark and word etc. in a variety of material surfaces using laser beam to mark
Equipment.Laser marking machine mainly includes CO 2 laser marking machine, semiconductor laser marking and laser marking machine
Etc..
Laser marking machine mainly includes galvanometer system in the prior art, and galvanometer system is mutually perpendicular comprising two panels vibrating shaft
Galvanometer, two panels galvanometer composition galvanometer system control laser marking machine mark laser on the surface of the thing that is marked along x-axis and y
Direction of principal axis is moved, so as to realize portraying for font and picture.But, when laser marking machine is to the object of small volume, for example：Guard against
Refer to, current producer's widespread practice be the inclined fixation of ring in one plane, allow laser cooperation galvanometer and field lens pair
Ring carries out mark.But because the Rayleigh range of the field lens of such system is limited, and the curved surface of annular ring is not at one
In plane, therefore the mode that this kind of mark is carved characters can only carve characters in the limited scope of ring, and carving word articulation can be with sharp
The focal shift of light beam and be deteriorated.Above-mentioned defocus phenomenon so that the focus of mark laser deviates mark plane, under energy density
Drop, the definition of now mark declines, and influences mark effect.
The content of the invention
The present invention solves the technical problem of a kind of laser marking machine is provided, in can solve the problem that above-mentioned background technology
Defocus phenomenon, it is ensured that mark point is located at the focal point or near focal point of field lens, improves mark quality.
In order to solve the above technical problems, one aspect of the present invention is：A kind of laser marking machine is provided, including
Laser output device and mark control device；The laser output device is used to export mark laser；The mark control device
For receiving the mark laser and the mark laser being got to the inner surface of the thing that is marked；The mark control device is also
For controlling, the mark laser gets to the mark point formed on the thing that is marked in the first direction or second direction is moved, its
In, optical path distance between the field lens and mark point of the mark control device be equal to the field lens focal length and the first numerical value it
With, it is to avoid defocus phenomenon occurs.
Wherein, the laser marking machine also includes controller；The controller is defeated with mark control device and laser respectively
Go out device connection, for receiving marking data, and laser output device output mark laser is controlled according to the marking data, with
And control mark control device movement mark point.
Wherein, the mark control device includes the first speculum, the first whirligig, field lens, the second speculum and the
Two whirligigs；First speculum is used to receive the mark laser exported from the laser output device, and will be described
To field lens, the field lens exports to the second speculum the mark laser to mark laser reflection, and second speculum is inserted
Be marked the inside of thing, and second speculum reflects the mark laser to the thing that is marked；
First whirligig is connected with the first speculum, for driving first speculum to rotate, changes described
The incidence point of the speculum of mark laser light incident second, so that mark point is moved along the first direction, second whirligig
Thing is connected with being marked, for driving the thing that is marked to rotate, so that described being marked a little move in a second direction,
Or,
First whirligig is connected with the first speculum, for driving first speculum to rotate, changes described
The incidence point of the speculum of mark laser light incident second, so that mark point is moved towards first direction, second whirligig
It is connected with the second speculum, for driving second speculum to rotate,
Or,
First whirligig is connected with the second speculum, for driving second speculum relative to the thing that is marked
Move up, change the incidence point of the speculum of mark laser light incident second, so that the mark o'clock is towards first
Direction is moved, and second whirligig is connected with the thing that is marked, for driving the thing that is marked to rotate, so that described beaten
Punctuate is moved towards second direction；
The control implement body is connected with the first whirligig and the second whirligig respectively.
Wherein, the optical axis of first speculum, field lens and the second speculum is generally aligned in the same plane.
Wherein, the laser marking machine also includes mobile device；The mobile device is connected with field lens, for moving field lens
222, to adjust the optical path distance between field lens 222 and mark point；The mobile device is connected with controller.
Wherein, the laser marking machine also includes the first distance detection device and second distance detection means；Described first
Distance detection device be used to detecting the mark laser from the inner surface of the eye point of the second speculum outgoing and the thing that is marked it
Between distance；The second distance detection means is used to detect the incidence point of the field lens and the speculum of mark laser light incident second
The distance between；The controller is connected with the first distance detection device and second distance detection means respectively.
Wherein, the laser marking machine also includes isolator；The isolator is arranged at the defeated of the laser output device
Go out end, and the isolator is located at the front of first speculum；The mark laser that the laser output device is exported
By being incident to the first speculum after the isolator；The isolator is used to isolate Returning beam.
The beneficial effects of the invention are as follows：The situation of prior art is different from, mark control device is entered to be marked by the present invention
The inside of thing, mark control device receives the mark laser that is exported of laser output device and mark laser is got into the thing that is marked
Inner surface, and mark control device control mark laser get on the thing that is marked formed mark point in the first direction or
Second direction is moved, wherein, first direction and second direction are two directions for differing, and realize carrying out two dimension to being beaten thing
Mark；In addition, mark control device is when mark laser to be got to the inner surface of the thing that is marked, the field of mark control device is controlled
Optical path distance between mirror and mark point is equal to the focal length and the first numerical value sum of field lens, so that mark point is located at the focus of field lens
Place or near focal point, and the density of the light of the focus of field lens or near focal point is larger, so that laser marking machine is in mark
When can be effectively prevented from occurring the fuzzy situation of mark, improve its mark quality.
Brief description of the drawings
Fig. 1 is the schematic diagram of laser marking machine implementation method of the present invention；
Fig. 2 is to rotate the signal that the first speculum moves up mark point in laser marking machine implementation method of the present invention
Figure.
Specific embodiment
The present invention is described in detail with implementation method below in conjunction with the accompanying drawings.
Fig. 1 is referred to, laser marking machine 20 includes laser output device 21 and mark control device 22；
Laser output device 21 is used to export mark laser.Mark control device 22, for receiving the input of mark laser, and
Mark laser is got to the inner surface of the thing that is marked.Mark control device 22 is additionally operable to control mark laser and gets to and be marked on thing
The mark point of formation is in the first direction or second direction is moved.First direction is two different directions with second direction, real
Two-dimentional mark now is carried out to the thing that is marked, pattern, word etc. are got with the thing that is marked.Further, mark control device
Optical path distance between 22 field lens 222 and mark point is equal to the focal length and the first numerical value sum of field lens 222, and the first numerical value can be with
It is the numerical value near zero or zero, then beats the focal point or near focal point for showing a little positioned at field lens.When the first numerical value is zero, then beat
Punctuate is located just at the focal point of field lens, and now, the density of the light of mark point is maximum, and mark degree of understanding highest can be effectively
The situation for avoiding mark fuzzy, and the density of the light of near focal point is only second to the light of focal point, its mark effect is also suitable
Good, mark degree of understanding is also very high.
In order to realize automatic marking, laser marking machine 20 also includes controller (not shown), controller respectively with mark control
Device processed 22 and laser output device 21 are connected, and for receiving marking data, and control laser output device according to marking data
21 output mark laser, and control mark control device 22 moves mark point.Accurately controlled according to marking data by controller
Mark control device 22 processed moves mark point, can export accurate mark pattern, it is to avoid control mark control device 22 manually
The various errors for being occurred.
Specifically, mark control device 22 is in addition to field lens 222, also including the first speculum 221, the first whirligig
(not shown), the second speculum 223 and the second whirligig 224.
First speculum 221 is used to receive the mark laser exported from laser output device 21, and mark laser is anti-
Field lens 222 is mapped to, field lens 222 exports to the second speculum 223 mark laser, and the second speculum 223 inserts the thing that is marked
Inside, the second speculum 223 reflects mark laser to the inner surface of the thing that is marked.It should be noted that：Field lens 222 is used to focus on
Light, the second speculum 223 is located between the focus of field lens 222 and field lens 222, is reflected during field lens 222 focuses on light
The light that field lens 222 is exported, to change the focus position of field lens 222.
First whirligig is connected with the first speculum 221, for driving the first speculum 221 to rotate, changes mark and swashs
The incidence point of light the second speculum 223 of incidence, when the incidence point of the second speculum of mark laser light incident 223 changes, beats
Mark laser can produce change in displacement from the outgoing of the second speculum 223 so that mark point is moved along the first direction.
Second whirligig 224 is connected with the thing that is marked, for driving the thing rotation that is marked, so as to be marked o'clock along second
Direction is moved, so as to realize carrying out two-dimentional mark to the thing that is marked.In the present embodiment, it is preferred that first direction is along Y-axis
Direction, second direction is along X-direction, when the first whirligig drives the first 221 rotate counterclockwise of speculum, by first
The mark laser synchronization of speculum 221 is rotated and is transferred to the speculum 223 of field lens 222 and second, is focused on by field lens 222
Mark laser moved on the position of the second speculum 223 so that final mark is same in the mark point of the inner surface of the thing that is marked
Moved in step, as shown in Fig. 2 it is opposite, it is anti-by first when the first whirligig drives the first speculum 221 to turn clockwise
The mark laser synchronization for penetrating mirror 221 is rotated and is transferred to the speculum 223 of field lens 222 and second.
Certainly, mark control device 22 is not limited only to a kind of above-mentioned structure, below other to mark control device
Structure example illustrates, its (1), likewise, mark control device 22 is in addition to field lens 222, also including the first speculum 221,
First whirligig, the second speculum 223 and the second whirligig 224.
First speculum 221 is used to receive the mark laser exported from laser output device 21, and mark laser is anti-
Field lens 222 is mapped to, field lens 222 exports to the second speculum 223 mark laser, and the second speculum 223 inserts the thing that is marked
Inside, the second speculum 223 reflects mark laser to the inner surface of the thing that is marked.
First whirligig is connected with the first speculum 221, for driving the first speculum 221 to rotate, changes mark and swashs
The incidence point of light the second speculum 223 of incidence, when the incidence point of the second speculum of mark laser light incident 223 changes, beats
Mark laser can produce change in displacement from the outgoing of the second speculum 223, so that mark point is moved along the first direction.
Second whirligig 224 is connected with the second speculum 223, for driving the second speculum 223 to rotate.It is worth explanation
Be：When driving the second speculum 223 to rotate, the incidence angle of the second speculum of mark laser light incident 223 is not changed, simply changed
Become the transmission direction from the mark laser of the outgoing of the second speculum 223, so that mark point is moved in a second direction.
It 2 is：Likewise, mark control device 22 is in addition to field lens 222, also including the first speculum 221, first
Whirligig, the second speculum 223 and the second whirligig 224.
First speculum 221 is used to receive the mark laser exported from laser output device 21, and mark laser is anti-
Field lens 222 is mapped to, field lens 222 exports to the second speculum 223 mark laser, and the second speculum 223 inserts the thing that is marked
Inside, the second speculum 223 reflects mark laser to the inner surface of the thing that is marked.
First whirligig is connected with the second speculum 223, for drive the second speculum 223 relative to be marked thing to
Go up or move down, change the incidence point of the second speculum of mark laser light incident 223, so that mark point is moved in a first direction
It is dynamic.It should be noted that：When the second speculum 223 is moved up relative to the thing that is marked, mark laser light incident
The incidence angle of the second speculum 223 keeps constant, after the incidence point of the second speculum of mark laser light incident 223 changes,
Mark point is moved along the first direction.
Second whirligig 224 is connected with the thing that is marked, for driving the thing rotation that is marked, so as to be marked o'clock second
Move in direction.What deserves to be explained is：When driving the second speculum 223 to rotate, the speculum of mark laser light incident second is not changed
223 incidence angle, simply changes the transmission direction of the mark laser from the outgoing of the second speculum 223, so that mark o'clock is second
Move in direction.Control implement body be connected with the first whirligig and the second whirligig 224, for control the first whirligig with
Second whirligig 224.In embodiments of the present invention, it is preferred that the first speculum 221, the speculum of field lens 222 and second
223 optical axis is generally aligned in the same plane.
Further, the different thing that is marked, eye point and be marked thing of the mark laser from the outgoing of the second speculum 223
Inner surface between distance be it is different, for example：Ring and bracelet, because the internal diameter of bracelet is big compared with the internal diameter of ring, therefore, beat
Mark laser is anti-from second more than mark laser with the distance between the inner surface of bracelet from the eye point of the outgoing of the second speculum 223
Penetrate between the eye point and the inner surface of ring of the outgoing of mirror 223, then timestamp is carried out, it is necessary to adjust field to ring and bracelet in priority
The distance between speculum 223 of mirror 222 and second, so that mark laser is beaten when the inner surface of ring and bracelet carries out mark
Punctuate is respectively positioned on the focal point of field lens 222.And the distance between speculum 223 of field lens 222 and second is adjusted for convenience, laser
Marking machine 20 also includes mobile device (not shown).Mobile device is connected with field lens 222, for moving field lens 222, to adjust field
Optical path distance between mirror 222 and mark point.
Control mobile device moves field lens 222 for convenience, and laser marking machine 20 also includes the first distance detection device
(not shown) and second distance detection means (not shown).
First distance detection device is used to detect eye point and be marked thing of the mark laser from the outgoing of the second speculum 223
The distance between inner surface.Second distance detection means is used to detect field lens 222 and the second speculum of mark laser light incident 223
The distance between incidence point.Controller is connected with the first distance detection device and second distance detection means, for according to
The testing result control mobile device of one distance detection device and second distance detection means is moved, to ensure to beat punctuation bit
In the focal point of field lens 222.In the present embodiment, the first distance detection device and second distance detection means are preferably infrared
Linear distance sensor, second distance detection means is arranged at field lens 222, and the first distance detection device is arranged at the second speculum
223。
When exporting mark laser in order to avoid laser output device 21, there is Returning beam, Returning beam input in light path
To laser output device 21, the quality of the laser that laser output device 21 exported can be influenceed, then laser marking machine 20 also includes
Isolator 23.Isolator 23 is arranged at the output end of laser output device 21, and isolator 23 is located at the first speculum 221
Front.The mark laser that laser output device 21 is exported is by being incident to the first speculum 221 after isolator 23；Isolator 23
Main purpose isolation and to reduce and return to the Returning beam of laser output device 21 during mark, to ensure laser output dress
Put 21 stabilization output.In addition, isolator 23 can also realize small beam expander, larger collimated light beam is obtained.Collimated light beam has
The less angle of divergence, it is ensured that spot size change is little after the collimated light beam can be transmitted over long distances.
It should be noted that：Because the first speculum 221 is when rotating, mark laser can be moved in the above-below direction for being beaten thing
It is dynamic.In order to ensure the region that mark laser will not be got to outside the thing that is marked, the second speculum 223 and field lens 222, according to field lens
222 focal lengths and size, the angle of the first speculum 221, the emulation of the angle of the second speculum 223 obtain the rotation of the first speculum 221
Gyration scope, the rotation angle range is reduced with certain safety coefficient, it is ensured that beaten under any build-up tolerance and dimensional tolerance
Outside the region that mark laser will not be got to outside the thing that is marked, the second speculum 223 and field lens 222.
The power density phase on the impaired probability of the second speculum 223 and the surface of the second speculum of mark laser marking 223
Close, in order to effectively reduce the power density that mark laser gets to the second speculum 223, it is general that the second speculum of reduction 223 is damaged
Rate.In the design process according to the input spot size of the second speculum 223, the focal length of field lens 222, the design parameter of field lens 222, with
And the distance between each parts set up model in optical simulation software.When focus accurately falls in ring inner wall surface
When by design software monitor the surface of the second speculum 223 spot size.If we using identical pulsewidth, frequency and
When the laser of average output power carries out the mark, the facula area of the second speculum 223 is bigger, in second speculum 223
The power density on surface is lower, and the impaired probability of the reflector plate is smaller.Certain above method can also be direct by measuring apparatus
Measurement hot spot determines the size of field lens 222 and input hot spot.When the collimation spot diameter of the input of isolator 23 is 8.8mm, meter
Calculation obtains the size that mark laser gets to laser facula on the surface of the second speculum 223, and the hot spot becomes with the focal length of field lens 222
Diminish greatly, in order to reduce the impaired probability of the second speculum 223, can as much as possible from the system of field lens 222 that focal length is shorter.
When we are using 222 system of field lens that focal length is 100mm, the collimated light beam of isolator 23 of different-diameter is calculated by field lens
222 and galvanometer system after spot size in secondary mirror.It can be seen that the hot spot is big with the change of input hot spot, mark swashs
Hot spot of the light on the second speculum 223 is becoming big.In order to lower the impaired probability of the second speculum 223, we protect as far as possible
In the case of card transmitance is sufficiently high, hot spot is collimated from larger isolator 23.
In embodiments of the present invention, mark control device is entered into the inside of thing that is marked, mark control device is received and swashed
Mark laser is simultaneously got to the inner surface of the thing that is marked for mark laser that light output arrangement is exported, and mark control device control
Mark laser processed gets to the mark point formed on the thing that is marked in the first direction or second direction movement, wherein, first direction
It is two directions for differing with second direction, so as to realize carrying out two-dimentional mark to being beaten thing；In addition, mark control device
When mark laser to be got to the inner surface of the thing that is marked, control mark control device field lens and mark point between light path away from
From the focal length equal to field lens and the first numerical value sum, so that mark point is located at the focal point or near focal point of field lens, and field lens
Focal point or near focal point light density it is larger so that laser marking machine can be effectively prevented from mark occur
The fuzzy situation of mark, improves its mark quality.
Embodiments of the present invention are the foregoing is only, the scope of the claims of the invention is not thereby limited, it is every using this
Equivalent structure or equivalent flow conversion that description of the invention and accompanying drawing content are made, or directly or indirectly it is used in other correlations
Technical field, is included within the scope of the present invention.
Claims (2)
1. a kind of laser marking machine, it is characterised in that including laser output device and mark control device；
The laser output device is used to export mark laser；
The mark control device is used to receive the mark laser and the mark laser is got to the inner surface of the thing that is marked；
The mark control device is additionally operable to control the mark laser to get to the mark point formed on the thing that is marked along first party
To or second direction move；
The laser marking machine also includes controller；
The controller is connected with mark control device and laser output device respectively, for receiving marking data, and according to institute
State marking data control laser output device output mark laser, and control mark control device movement mark point；
The mark control device also includes the first speculum, the first whirligig, field lens, the second speculum and the second rotating dress
Put；
First speculum is used to receiving the mark laser that is exported from the laser output device, and by the mark laser
Field lens is reflexed to, the field lens exports to the second speculum the mark laser, and second speculum inserts the thing that is marked
Inside, second speculum reflects the mark laser to the thing that is marked；
First whirligig is connected with the first speculum, for driving first speculum to rotate, changes the mark
The incidence point of the speculum of laser light incident second, so that mark point is moved along the first direction, second whirligig and quilt
Mark thing is connected, for driving the thing that is marked to rotate, so that described being marked a little move in a second direction,
Or,
First whirligig is connected with the second speculum, for driving second speculum upward relative to the thing that is marked
Or move down, change the incidence point of the speculum of mark laser light incident second, so that mark point is in the first direction
Mobile, second whirligig is connected with the thing that is marked, for driving the thing that is marked to rotate, so that described be marked a little
Towards second direction movement；
The control implement body is connected with the first whirligig and the second whirligig respectively；
Wherein, the optical path distance between the field lens of the mark control device and mark point is equal to the focal length and first of the field lens
Numerical value sum, first numerical value is the numerical value near zero or zero；
The first direction, second direction are two different directions；
The optical axis of first speculum, field lens and the second speculum is generally aligned in the same plane；
The laser marking machine also includes mobile device；
The mobile device is connected with field lens, for moving field lens, to adjust the optical path distance between field lens and mark point；
The mobile device is connected with controller；
The laser marking machine also includes the first distance detection device and second distance detection means；
First distance detection device be used to detecting the mark laser from the eye point of the second speculum outgoing be marked
The distance between inner surface of thing；
The second distance detection means is between the incidence point for detecting the field lens and the speculum of mark laser light incident second
Distance；
The controller is connected with the first distance detection device and second distance detection means respectively.
2. laser marking machine according to claim 1, it is characterised in that
The laser marking machine also includes isolator；
The isolator is arranged at the output end of the laser output device, and the isolator is located at first speculum
Front；The mark laser that the laser output device is exported is by being incident to the first speculum after the isolator；
The isolator is used to isolate Returning beam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511019621.5A CN105644156B (en) | 2015-12-30 | 2015-12-30 | A kind of laser marking machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511019621.5A CN105644156B (en) | 2015-12-30 | 2015-12-30 | A kind of laser marking machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105644156A CN105644156A (en) | 2016-06-08 |
| CN105644156B true CN105644156B (en) | 2017-05-31 |
Family
ID=56477541
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511019621.5A Active CN105644156B (en) | 2015-12-30 | 2015-12-30 | A kind of laser marking machine |
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| CN (1) | CN105644156B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206747778U (en) * | 2016-03-26 | 2017-12-15 | 广州创乐激光设备有限公司 | Laser marking machine |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4427999A (en) * | 1977-06-06 | 1984-01-24 | Coulter Systems Corporation | High speed imaging of electrophotographic film by fine beam scanning |
| EP1168812A2 (en) * | 2000-06-26 | 2002-01-02 | Fuji Photo Film Co., Ltd. | Internal-surface-scanning image recording apparatus |
| US6456315B1 (en) * | 1999-05-20 | 2002-09-24 | Fuji Photo Film Co., Ltd. | Internal-surface-scanning image recording apparatus |
| CN202147483U (en) * | 2011-08-05 | 2012-02-22 | 吉林镭科光机电设备有限公司 | Jewelry processing tool |
| CN103331524A (en) * | 2013-07-04 | 2013-10-02 | 何健 | Method and device for marking inner wall patterns of circular hole of object with laser |
-
2015
- 2015-12-30 CN CN201511019621.5A patent/CN105644156B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4427999A (en) * | 1977-06-06 | 1984-01-24 | Coulter Systems Corporation | High speed imaging of electrophotographic film by fine beam scanning |
| US6456315B1 (en) * | 1999-05-20 | 2002-09-24 | Fuji Photo Film Co., Ltd. | Internal-surface-scanning image recording apparatus |
| EP1168812A2 (en) * | 2000-06-26 | 2002-01-02 | Fuji Photo Film Co., Ltd. | Internal-surface-scanning image recording apparatus |
| CN202147483U (en) * | 2011-08-05 | 2012-02-22 | 吉林镭科光机电设备有限公司 | Jewelry processing tool |
| CN103331524A (en) * | 2013-07-04 | 2013-10-02 | 何健 | Method and device for marking inner wall patterns of circular hole of object with laser |
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| Publication number | Publication date |
|---|---|
| CN105644156A (en) | 2016-06-08 |
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