CN203485573U - Paper feeding mechanism of printer - Google Patents
Paper feeding mechanism of printer Download PDFInfo
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- CN203485573U CN203485573U CN201320492965.8U CN201320492965U CN203485573U CN 203485573 U CN203485573 U CN 203485573U CN 201320492965 U CN201320492965 U CN 201320492965U CN 203485573 U CN203485573 U CN 203485573U
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- axle journal
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- feeding
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Abstract
The utility model provides the paper feeding mechanism of a printer, wherein crimping rollers are prevented from being electrified while the electrostatic discharge during the conveying process of the recording paper is realized. The paper feeding mechanism of the printer comprises a paper feeding roller (5) made of conductive material and driven to rotate when electrically connected with the ground potential; a crimping roller (16) also made of conductive material and capable of freely rotating when crimped on the paper feeding roller (5), a plurality of protrusions (5d) protrudedly formed on the outer circumferential surface of the paper feeding roller, and a flange-shaped journal (8) made of conductive material and supported by a journal supporting part (16b). The journal is protruded out of the outer peripheral surface (16a) of the crimping roller (16) at a dimension smaller than the thickness dimension of the recording paper (4) while larger than the height dimension of the protrusions (5d). The journal (8) is supported by the crimping roller (16). Meanwhile, the difference between the dimension of the outer diameter of the journal supporting part (16b) and the dimension of the inner diameter of the journal (8) is larger than the dimension of the thickness of the recording paper (4).
Description
Technical field
It is loose so that the uncharged paper advance mechanism of crimping roller that the utility model relates in printer the static row who uses, can produce when carrying paper used for recording.
Background technology
As the printer that uses paper advance mechanism in the past, it is generally thermal printer.As shown in Figure 5, Figure 6, in this printer, be equipped with: Printing Department 3, arranged opposite has thermal head 1 and air roll 2; Paper advance mechanism 7, be positioned at the conveyance direction downstream side of paper used for recording 4, the feeding-in roll 5 and the crimping roller 6 that by the drive source of the motor by not shown etc., are rotarilyd actuate form, and this crimping roller 6 is rotated freely the application of force by the welded part of not shown crimp spring etc. so that clamp paper used for recording 4 between itself and feeding-in roll 5.
In addition, as shown in Figure 7, feeding-in roll 5 is used metal roller, and this metal roller is equipped with a plurality of projections (not shown) on outer peripheral face 5a, by the plurality of projection bur in paper used for recording 4 and correctly carry non-skidly paper used for recording 4.The projection forming portion 5b with a plurality of projections can be until well carry paper used for recording 4 in left and right with the state balance leaving with the roughly the same region of the width of paper used for recording 4.
In addition, in order to prevent the maximization of printer, crimping roller 6 is used metal roller, and this metal roller is with the diameter roughly the same with feeding-in roll 5, so that can be by paper used for recording 4 reliably to feeding-in roll 5 crimping clampings.In this crimping roller 6, at both ends, be equipped with and be cut axle journal (Ring, カ ラ Application) the maintaining part 6b that is processed as path, axle journal 8 is configured to, and is pressed into maintenance and rotates with crimping roller 6 one by the axle journal maintaining part 6b at two ends.
In addition, axle journal 8 with the height dimension than being formed on the projection on projection forming portion 5b larger (height), than the size of the gauge of paper used for recording 4 little (low), form outstanding flange shape of crimping outer peripheral face 6a from crimping roller 6.In such size relationship, when having paper used for recording 4 between feeding-in roll 5 and crimping roller 6, axle journal 8 leaves and has clearance C from the outer peripheral face 5a of feeding-in roll 5.
In the case, feeding-in roll 5 and crimping roller 6 become not conducting of electricity.Feeding-in roll 5 is by metal bearing etc. and not shown framework (frame) conducting, but especially because crimping roller 6 does not have earthing or grounding means, so become the state that electricity suspends.
Details about this paper advance mechanism 7 is for example open in patent documentation 1.
Patent documentation 1: JP 2005-280871 communique
But, in paper advance mechanism 7 in the past, crimping roller 6 is not individually arranged to earthing or grounding means, in the situation that paper used for recording 4 is present between feeding-in roll 5 and crimping roller 6, as described above, the axle journal 8 of crimping roller 6 leaves and becomes non-conductionly from the outer peripheral face 5a of feeding-in roll 5, and crimping roller 6 becomes the state that electricity suspends.
In addition, in paper feeding action, because the friction of paper used for recording 4 and thermal head 1 or not shown plastic paper used for recording guidance part etc. has produced static.And the static producing on paper used for recording 4 makes paper used for recording 4 charged, the crimping roller 6 that the state suspending with electricity is crimped on paper used for recording 4 has also been with static.
And in the process of passing through in printing action record paper using 4, crimping roller 6 continues charged, carried charge increases, and the charged static to the limit discharges on the control basal disc of not shown printer, has the such problem of fault of the misoperation etc. of generation CPU.
In order to address this problem, in the situation that crimping roller 6 being arranged to individual other earthing or grounding means, the electroconductive component that makes metal spring etc. can follow the crimping of crimping roller, the mode of departure motion be crimped on crimping roller 6, and not shown framework etc. between obtain conducting.In the case, have because appending of new parts causes the problem that cost rises and device maximization is such.
Utility model content
So, the purpose of this utility model be to provide a kind of can not append parts and guarantee crimping roller 6 and earthy conducting, can make crimping roller 6 without by paper used for recording 4, produce with static, but to the paper advance mechanism of the loose small-sized and cheap printer of earth potential row.
In order to address the above problem, the paper advance mechanism of printer of the present utility model has: feeding-in roll, by conductive material, formed, and under the state being electrically connected to earth potential, be driven in rotation; Crimping roller, consists of conductive material, can be crimped on this feeding-in roll from top, and can freely rotate; The flange shape axle journal that at least one consists of conductive material, is positioned at the outside of paper used for recording conveyor zones (Area), by the axle journal support part supports of above-mentioned crimping roller; And a plurality of projections, outstanding being formed on the outer peripheral face of above-mentioned feeding-in roll, and bur is to the back side of paper used for recording.
And above-mentioned axle journal is set as: with than the less size of the gauge of above-mentioned paper used for recording and the size larger than the height dimension of above-mentioned projection, outstanding from the outer peripheral face of above-mentioned crimping roller.In such paper advance mechanism, it is characterized in that, above-mentioned axle journal has gap (ガ タ, backlash) radially and rotates freely by the above-mentioned axle journal support part supports of above-mentioned crimping roller, and the difference of the outside dimension of above-mentioned axle journal support and the internal diameter size of above-mentioned axle journal is larger than the gauge of above-mentioned paper used for recording.
And then the paper advance mechanism of printer of the present utility model is characterised in that, above-mentioned axle journal disposes a pair of in the outside of above-mentioned paper used for recording conveyor zones.
The effect of utility model
According to the paper advance mechanism of printer of the present utility model, be configured to: above-mentioned axle journal has gap radially and rotates freely by the above-mentioned support part supports of above-mentioned crimping roller, and the difference of the appearance and size of above-mentioned axle journal support and the internal diameter size of above-mentioned axle journal is larger than the gauge of above-mentioned paper used for recording.
Owing to being such structure, so in the situation that above-mentioned paper used for recording is present between above-mentioned feeding-in roll and above-mentioned crimping roller, above-mentioned crimping roller and above-mentioned feeding-in roll are positioned at the position of the amount of mutually leaving the thickness that is equivalent to above-mentioned paper used for recording, but because above-mentioned axle journal is gapped and by above-mentioned axle journal support part supports, so center is by the deadweight mobile amount that is equivalent to this thickness downwards.In addition, left and right directions is supported to approach the state of the direct of travel of above-mentioned paper used for recording in gap.
In addition, because the size in gap is larger than the gauge of above-mentioned paper used for recording, even so in the situation that there is above-mentioned paper used for recording, above-mentioned axle journal also can contact reliably with the outer peripheral face that is positioned at the above-mentioned feeding-in roll of below, and the above-mentioned feeding-in roll that is positioned at below can be via axle journal and the above-mentioned crimping roller conducting that is positioned at top.Thus, on above-mentioned paper used for recording, produce, that charged static to above-mentioned crimping roller can not increase parts number of packages is loose to earth potential row via feeding-in roll, thereby the paper advance mechanism of cheap and small-sized printer can be provided.
And then, owing to having, can crimping clamp the paper used for recording conveyor zones that above-mentioned paper used for recording is carried between above-mentioned feeding-in roll and above-mentioned crimping roller, above-mentioned axle journal is configured to and disposes a pair of in the outside of above-mentioned paper used for recording conveyor zones, so can set abreast above-mentioned feeding-in roll and above-mentioned crimping roller by a pair of axle journal, thereby can carry reliably paper used for recording.
In addition, owing to being configured to above-mentioned axle journal by the above-mentioned axle journal support part supports of above-mentioned crimping roller, so only by being that path just can arrange the support of above-mentioned axle journal by the both ends machining of above-mentioned crimping roller, and only, by above-mentioned axle journal is inserted and just can be assembled from both ends, therefore can provide the paper advance mechanism of the printer that parts unit price is cheap, assembleability is good.
Accompanying drawing explanation
Fig. 1 means the side view of schematic configuration of the printer of an embodiment of the present utility model.
Fig. 2 means the front view of main portion structure of the paper advance mechanism of an embodiment of the present utility model.
Fig. 3 is for the concept map (position in the A-A cross section of Fig. 2) of the action of the axle journal in the situation that there is no paper used for recording of paper advance mechanism of an embodiment of the present utility model is described.
Fig. 4 is for the concept map (position in the A-A cross section of Fig. 2) of the action of the axle journal in the situation that has paper used for recording of paper advance mechanism of an embodiment of the present utility model is described.
Fig. 5 means the side view of the schematic configuration of printer in the past.
Fig. 6 means the top view of the schematic configuration of printer in the past.
Fig. 7 means the front view of main portion structure of the paper advance mechanism of embodiment in the past.
The explanation of Reference numeral
1 thermal head; 2 air rolls; 3 Printing Departments; 4 paper used for recording; 5 feeding-in rolls; 5a outer peripheral face; 5b projection forming portion; 5c rotating shaft; 5d projection; 6 crimping rollers; 6a crimping outer peripheral face; 6b axle journal maintaining part; 7 paper advance mechanisms; 8 axle journals; C gap; 16 crimping rollers; 16a crimping outer peripheral face; 16b axle journal support; 16c support external diameter; 17 paper advance mechanisms; 18 axle journals; 18a axle journal outer peripheral face; 18b axle journal internal diameter.
The specific embodiment
Below, based on Fig. 1 to Fig. 4, embodiment of the present utility model is described.
In addition, for parts as in the past, give identical Reference numeral.
As shown in Figure 1, in the embodiment of printer that uses paper advance mechanism of the present utility model, dispose: the Printing Department 3 of well-known structures, arranged opposite has thermal head 1 and air roll 2; Paper advance mechanism 17, in the downstream of the throughput direction of paper used for recording 4, consists of metal feeding-in roll 5 and metal crimping roller 16, and this feeding-in roll 5 is rotarilyd actuate by not shown drive source, this crimping roller 16 and these feeding-in roll 5 crimping.
As shown in Figure 2, this feeding-in roll 5 has the profile that consists of the diameter dimension of stipulating for columned outer peripheral face 5a roughly.In addition, from the outstanding rotating shaft 5c that is formed with in both ends, left and right of the length direction of feeding-in roll 5.
And, although the metal bearing that rotating shaft 5c not have to illustrate on the framework be configured in printer supports, can rotarily actuate by the drive source of stepper motor etc.Feeding-in roll 5 becomes the state of conducting via this metal bearing and framework and earth potential.
In addition, on the outer peripheral face 5a of feeding-in roll 5, near the both ends of the length direction of feeding-in roll 5, so that outside is for dividing two places to be formed with projection forming portion 5b(with reference to Fig. 2 with the mode of the roughly the same position, edge of paper used for recording 4), this projection forming portion 5b at circumferencial direction and the height dimension that has to stipulate axially and the outstanding a plurality of projection 5d(that form of spacing dimension with reference to Fig. 3, Fig. 4).Here, from the outside of projection forming portion 5b, towards central width dimensions, at random set.And feeding-in roll 5 implements the hard coating of nickel coating etc. on the whole surface of outward appearance, guaranteed especially intensity and the durability of projection 5d.
With the opposed upper side of feeding-in roll 5, with the length roughly the same with feeding-in roll 5, the rotating shaft of take each other, as parallel mode, rotate and dispose freely profile for cylindric, metal crimping roller 16 roughly.In addition, crimping roller 16 can to feeding-in roll 5 approach away from direction move, by not shown compression helical spring to the direction application of force being crimped on feeding-in roll 5.
The both ends that this crimping roller 16 has length direction are processed into than the diameter of the crimping outer peripheral face 16a axle journal support 16b of path more.In addition, as shown in Figure 3, Figure 4, the external diameter of the outer peripheral face of axle journal support 16b becomes support external diameter 16c.And the brazen flange shape axle journal 18 of pair of right and left is gapped and rotatably mounted by axle journal support 16b.
That is, the support external diameter 16c of the axle journal internal diameter 18b of axle journal 18 and axle journal support 16b, is set as making axle journal internal diameter 18b large.And then its difference in size is set as larger than the gauge of paper used for recording 4.In addition, axle journal 18 on the length direction of axle journal support 16b by not shown block component (stopper) moving-limiting, inserting from both ends to axle journal support 16b, than the width of paper used for recording 4 more away from position so that the mode not coming off from axle journal support 16b be supported.
In addition, the axle journal outer peripheral face 18a of axle journal 18 is formed with than the large diameter of diameter of the crimping outer peripheral face 16a of crimping roller 16.As shown in Figure 3, between feeding-in roll 5 and crimping roller 16, do not exist under the original state of paper used for recording 4, crimping roller 16 is to the direction crimping approaching with feeding-in roll 5, so axle journal support 16b also and wheel rim axle journal internal diameter 18b between the scope in gap in below figure, move, by the bottom of axle journal internal diameter 18b, supported.
Now, axle journal outer peripheral face 18a is crimped on the outer peripheral face 5a of feeding-in roll 5, and axle journal 18 can further not approach with the distance of feeding-in roll 5.And, the projecting height radially of the axle journal outer peripheral face 18a starting due to the outer peripheral face 16a from crimping roller 16 is set highlyer than the height dimension of projection 5d, even so do not having under the state of paper used for recording 4, axle journal 18 also becomes block (stopper) and does not have the situation that crimping roller 16 damages projection 5d crimping by pressure.
In addition, the projecting height radially of the axle journal outer peripheral face 18a starting due to the outer peripheral face 16a from crimping roller 16 forms lower than the gauge of paper used for recording 4, so if paper used for recording 4 is transported between the feeding-in roll 5 and crimping roller 16 of the state in Fig. 3, can to paper used for recording 4, apply crimp force by crimping outer peripheral face 16a and and feeding-in roll 5 between clamping, become the state of Fig. 4.
As shown in Figure 4, exist under the state of paper used for recording, axle journal outer peripheral face 18a contacts on the outer peripheral face 5a of feeding-in roll 5 by deadweight.Crimping roller 16 leaves the amount of the thickness that is equivalent to paper used for recording 4 from feeding-in roll 5, but because support external diameter 16c sets greatlyr than the gauge of paper used for recording 4 with the difference in size of axle journal internal diameter 18b, so axle journal support 16b just and axle journal internal diameter 18b between move in the gap that exists, axle journal outer peripheral face 18a can not leave from the outer peripheral face 5a of feeding-in roll 5.
In addition, because axle journal outer peripheral face 18a contacts with the outer peripheral face 5a of feeding-in roll 5, so axle journal 18 is along with the paper feeding action of feeding-in roll 5, to rotating with feeding-in roll 5 rightabouts.In Fig. 4, the throughput direction that represents paper used for recording 4 is right left from figure, feeding-in roll 5 to counterclockwise rotation, crimping roller 16 to right handed state.
Under this state, axle journal 18 is by the outer peripheral face 5a tractive of the rotation of feeding-in roll 5, the downstream of the throughput direction of middle mind-set paper used for recording 4 (left side) is mobile, and under the right-hand member upper portion of axle journal internal diameter 18b and the state of axle journal support 16b butt, by axle journal support, 16b is rotatably mounted.
Now, crimping roller 16 is electrically connected to earth potential with outer peripheral face 5a → rotating shaft 5c → bearing → framework → earthy order of crimping roller 16 → axle journal support 16b → axle journal internal diameter 18b → axle journal outer peripheral face 18a → feeding-in roll 5.Therefore the static, being produced by paper used for recording 4 can not make crimping roller 16 charged but immediately static row is fallen apart to earth potential.
The example that uses the printing of the printer of such paper advance mechanism of the present utility model 17 to move is described.First, utilize the paper-feeding mechanism of not shown pick-up roller etc., the Printing Department 3 through consisting of thermal head 1 and air roll 2, is transported to paper used for recording 4 paper advance mechanism 17 consisting of feeding-in roll 5 and crimping roller 16.
If the drive source by stepper motor etc. under this state makes feeding-in roll 5 rotations, the leading section of paper used for recording 4 is crimped and is clamped between feeding-in roll 5 and crimping roller 16, and a plurality of projection 5d, are become and can carry out by the feed status of feeding-in roll 5 by bur in paper used for recording 4.Then, by feeding-in roll 5, carry paper used for recording 4, carry out as the thermal head 1 of printing equipment and the contraposition of the printing starting position of paper used for recording 4.
Then, if drive feeding-in roll 5 and carry out moving by the printing of thermal head 1, on paper used for recording 4, print desirable image.In the situation that carrying out colored printing, whenever a kind of printing process of color finishes, just return to above-mentioned printing starting position, by the quantity of color, repeatedly carry out identical printing process.Finally, by the direction to identical with when action printing, be further rotated and driven feeding-in roll 5, the paper used for recording 4 after printing is finished is transported to outside thermal printer, and discharges to not shown pallet.
In the paper advance mechanism of such printer of the present utility model, paper used for recording 4 is with static, and this static is the static producing due to the force of sliding friction with thermal head 1 or not shown plastic guiding part.And, due to when the paper used for recording of printing action etc. is carried action, with the paper used for recording 4 of static through between feeding-in rolls 5 and crimping roller 16, so on this paper used for recording 4 with static also make crimping roller 16 charged.
But, because crimping roller 16 is via axle journal 18 and feeding-in roll 5 and earth potential conducting, thus can be immediately that static row is loose, thus can be not charged.Therefore, can not occur, to the electric discharge of control basal disc of printer etc., can prevent the misoperation of CPU yet.
In addition, because basic structure is roughly the same with paper advance mechanism 7 in the past, so can not increase parts number of packages, realize crimping roller 16 to earthy conducting, so compare with the situation of appending in addition the parts for being connected to earth potential, the paper advance mechanism of cheap and small-sized printer can be provided.
And then, owing to thering is the paper used for recording conveyor zones that paper used for recording 4 crimping clampings can be carried between feeding-in roll 5 and crimping roller 16, axle journal 18 is configured to and is configured to a pair of in the outside of the conveyor zones of paper used for recording 4, so can set abreast feeding-in roll 5 and crimping roller 16 by a pair of axle journal 18, can balance well and reliably carry paper used for recording 4.
In addition, because axle journal 18 is configured to the axle journal support 16b supporting that is crimped roller 16, so by being path by the both ends machining of crimping roller 16, can not append parts and axle journal support 16b is set, and only by axle journal 18 is inserted and just can be assembled from both ends, so can provide that parts unit price is cheap, the paper advance mechanism of the good printer of assembleability.
In the present embodiment, particularly use the structure of following size.
The diameter of feeding-in roll 5: φ 10mm
The height of the high 5d of projection of feeding-in roll: 0.1mm
The diameter of the outer peripheral face 6a of crimping roller 16: φ 6.0mm
The support external diameter 16c of crimping roller 16: φ 4.0mm
The diameter of the outer peripheral face 18a of axle journal 18: φ 6.6mm
Axle journal internal diameter 18b: φ 4.3mm
The thickness of paper used for recording 4: 0.2mm
The utility model is not limited to above-described embodiment, and each size etc. can suitably be selected according to the system of printer optimum value certainly.In addition, in the present embodiment, be configured to: feeding-in roll 5 is configured in to below, and crimping roller 16 is configured in to top, make axle journal 18 be crimped roller 16 supportings, but be not limited thereto.Can be also for example, crimping roller 16 is configured in to below, feeding-in roll 5 is configured in to top, axle journal 18 is supported by feeding-in roll 5.In addition can suitably change to, configuration or the structure of other optimums.
Claims (2)
1. a paper advance mechanism for printer, is characterized in that, has:
Feeding-in roll, consists of conductive material, under the state being electrically connected to earth potential, is driven in rotation;
Crimping roller, consists of conductive material, can be crimped on above-mentioned feeding-in roll from top, and can rotate freely;
At least 1 flange shape axle journal consisting of conductive material, is positioned at the outside of paper using conveyor zones, by the axle journal support part supports of above-mentioned crimping roller; And
A plurality of projections, outstanding being formed on the outer peripheral face of above-mentioned feeding-in roll, and bur is to the back side of paper used for recording;
Above-mentioned axle journal is set as, with the size less than the gauge of above-mentioned paper used for recording, and the size larger than the height dimension of above-mentioned projection, it is outstanding from the outer peripheral face of above-mentioned crimping roller,
Above-mentioned axle journal has gap radially and rotates freely by the above-mentioned axle journal support part supports of above-mentioned crimping roller, and the difference of the outside dimension of above-mentioned axle journal support and the internal diameter size of above-mentioned axle journal is larger than the gauge of above-mentioned paper used for recording.
2. the paper advance mechanism of printer as claimed in claim 1, is characterized in that,
Above-mentioned axle journal disposes a pair of in the outside of above-mentioned paper using conveyor zones.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320492965.8U CN203485573U (en) | 2013-08-13 | 2013-08-13 | Paper feeding mechanism of printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320492965.8U CN203485573U (en) | 2013-08-13 | 2013-08-13 | Paper feeding mechanism of printer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203485573U true CN203485573U (en) | 2014-03-19 |
Family
ID=50256427
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320492965.8U Expired - Fee Related CN203485573U (en) | 2013-08-13 | 2013-08-13 | Paper feeding mechanism of printer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203485573U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107175932A (en) * | 2016-03-09 | 2017-09-19 | 精工爱普生株式会社 | Printing equipment |
| CN110505961A (en) * | 2017-04-12 | 2019-11-26 | 威德米勒界面有限公司及两合公司 | Printer for franking band |
-
2013
- 2013-08-13 CN CN201320492965.8U patent/CN203485573U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107175932A (en) * | 2016-03-09 | 2017-09-19 | 精工爱普生株式会社 | Printing equipment |
| CN111660684A (en) * | 2016-03-09 | 2020-09-15 | 精工爱普生株式会社 | Printing apparatus |
| CN110505961A (en) * | 2017-04-12 | 2019-11-26 | 威德米勒界面有限公司及两合公司 | Printer for franking band |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Tokyo, Japan, Japan Patentee after: Alpine Alpine Company Address before: Tokyo, Japan, Japan Patentee before: Alps Electric Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140319 Termination date: 20200813 |