CN1278486A - Paper-feeding apparatus - Google Patents
Paper-feeding apparatus Download PDFInfo
- Publication number
- CN1278486A CN1278486A CN 00118847 CN00118847A CN1278486A CN 1278486 A CN1278486 A CN 1278486A CN 00118847 CN00118847 CN 00118847 CN 00118847 A CN00118847 A CN 00118847A CN 1278486 A CN1278486 A CN 1278486A
- Authority
- CN
- China
- Prior art keywords
- stepper motor
- resolution
- printer
- paper
- paper feeder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
- B41J13/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, specially adapted for supporting or handling copy material in short lengths, e.g. sheets
- B41J13/0009—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, specially adapted for supporting or handling copy material in short lengths, e.g. sheets control of the transport of the copy material
- B41J13/0018—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, specially adapted for supporting or handling copy material in short lengths, e.g. sheets control of the transport of the copy material in the sheet input section of automatic paper handling systems
Abstract
To provide a paper feeding device capable of reliably and efficiently performing paper feeding in relation to the resolution of a printer. A paper feeding device to be used for a printer is provided with a roller 3 for feeding paper and a stepping motor 2 for rotating the roller and in which the roller 3 and a rotor of the stepping motor 2 are arranged on the same shaft A, the stepping motor 2 obtains the rotation smaller than a basic step by a micro-step exciting method. When the resolution of the printer is taken as X, the diameter of the roller 3 is taken as Y, and the basic step number of the stepping motor 2 is taken as Z, the relationship of n.Z=pi Y.X is established, wherein pi is the ratio of the circumference of a circle to its diameter, and n is an integral number of 2 or more.
Description
The paper feeder that the present invention system uses about printer.
The structure of general printer is that the paper feeding of paper feeder limit, printing are slided in front and printed off character image.Again, the paper feeder used of printer is made up of conveying cylinder that paper roll is gone into and motor that this cylinder is rotated.
This paper feeder such as spy drives the high accuracy paper feeding control device of record among No. 21 75, the flat 63-11, and its cylinder and motor directly link.This structure parts such as getting involved decelerator between cylinder and motor that coexist are compared, and can avoid the influence of backlash backlash etc., have improved the paper feeding precision.
Also have, the motor that uses in this application is a stepper motor, if control with the micro-stepping excitation mode, will realize more meticulous paper feeding.
That is to say, base excitation mode as stepper motor, for 2 of stator coil being carried out 2 phase excitation modes of excitation when identical, and the micro-stepping excitation mode, be can corresponding this excitation mode the size of the exciting current of each phase of flow path to be switched to suitable value, obtain the mode of the littler stepping angle of this basic stride that exists with ... the little number of teeth of rotor thus.
This micro-stepping excitation mode is also referred to as small step excitation mode or fine setting excitation mode, and its advantage is the resolution that can increase substantially stepper motor, and the rotation of rotor is carried out smoothly.
Nature, the stepper motor that above-mentioned paper feeder uses has requirement for the resolution that the resting position of printer resolution is determined, therefore is necessary the number of cutting apart of each basic stride of basic number of steps and micro-stepping excitation mode is carried out suitable settings.
Especially micro-stepping excitation mode, along with the sectionalization of basic stride, problem has also occurred, and the maximum that promptly drives rotor torque has reduced, and its composed view precision has also reduced.
Owing to the maximum that drives rotor torque can improve along with the increase of input current, though therefore can corresponding sectionalization to a certain degree, this point is from power supply capacity, and it seems that the viewpoint of heating etc. be limited.
This point, the high accuracy of opening record among No. 21 75, the flat 63-11 described spy is not consider mechanical transmission spacing (spacing of stride substantially) and the equalization point of at random setting stepper motor with the way on the paper feeding control device, but because of not taking into full account in advance the relation between all resolutions of printer as described above and the motor resolution, the peaked minimizing that drives rotor torque and the following degradation of composed view precision, in fact the position of rotor determines it is extremely unsettled.
In view of the above problems, the objective of the invention is to the resolution of corresponding printer, by the resolution of the stepper motor of rotary drum is suitably set, provide a kind of can be accurately and the paper feeder that carries out paper feeding effectively.
The present invention is the paper feeder that printer is used, be provided with the stepper motor of paper feed roller and this cylinder of rotation, rotor at described cylinder and described stepper motor is in the paper feeder of arranged coaxial, and described stepper motor can carry out the rotation littler than basic stride with the micro-stepping excitation mode.When the resolution of described printer is X, the diameter of described cylinder is the basic number of steps of Y, described stepper motor when being Z, and their pass is:
n·Z=πY·X
And π is a pi, and n is the integer more than 2.
This paper feeder can corresponding printer resolution carry out accurate and effective paper feeding.Be illustrated with regard to its method for designing below.
At first, the resolution X of corresponding printer regulation sets the paper feeding amount in each step of stepper motor, and promptly the resolution X of printer can represent with counting of per unit length.Therefore, the paper feeding amount in each step of stepper motor is set at dot spacing (inverse of resolution X) among the resolution X and equates.
And the paper feeding amount in this each step is equivalent to remove with the resolution of stepper motor the girth of cylinder, and therefore, the resolution of stepper motor is be equivalent to cylinder girth and printer resolution X long-pending.Again then, the girth of cylinder is equivalent to the diameter Y of cylinder and amassing of pi, represents with π Y.
Several the amassing of cutting apart of the basic number of steps Z that the resolution of stepper motor is equivalent to the moving circle of rotor revolution and each basic stride of micro-stepping excitation mode.
Therefore, in case determined basic number of steps Z according to the structure of stator and rotor, the number of cutting apart how to set each basic stride of micro-stepping excitation mode exists with regard to becoming problem for good.
Here, in the micro-stepping excitation mode, return the state of multiple input in case each goes on foot formation substantially with a fixing current pattern, just can control it comparatively easily, therefore, stride is divided into the ratio of integers more than 2 substantially.
In this paper feeder, shown in described formula, the girth π Y of cylinder and printer resolution X's is long-pending, by being set at n times that equals basic number of steps Z, just can carry out paper feeding well.
For example, in design during paper feeder,,, just can determine the girth π Y of cylinder according to described formula in case determined the resolution of the stepper motor of the resolution X of printer and use.
The present invention is the paper feeder that constitutes when n is a integer below 12 in the described formula.
This paper feeder is counted the integer that is set at below 12 with the cutting apart of each basic stride of stepper motor, and paper feeding more accurately and is effectively carried out.
That is to say, in the micro-stepping excitation mode,, produced the problem that maximum reduces and the composed view precision also descends that drives rotor torque along with the sectionalization of basic stride.And this paper feeder is owing to set the number of cutting apart of each basic stride smallerly, therefore the power supply capacity of motor, heating etc. can be controlled within the scope that practical application allows, can fully guarantee to drive the maximum and the composed view precision of rotor torque again.
On the contrary, if set very big counted in cutting apart of each basic stride, just be difficult to guarantee to drive the maximum and the composed view precision of rotor torque, and the performance of printer is caused bad influence.The present invention then can avoid this kind situation effectively.
The simple declaration of accompanying drawing
Figure 1 shows that the outside drawing of paper feeder in the concrete example of the present invention.
Figure 2 shows that the outside drawing of paper feeder in the concrete example of the present invention.The working of an invention form
With reference to the accompanying drawings concrete example of the present invention is described in detail.
As shown in Figure 1, this routine paper feeder 1 is used for printer, the stepper motor 2 that is provided with paper feed roller 3 and this cylinder 3 is rotated, and corresponding diagram has been omitted the paper feeder that printhead constitutes.
Cylinder 3 is provided with the axle A that combines as a whole with the rotor of stepper motor 2, and the two phase mutually synchronization is rotated.And for example shown in Figure 2, the turning cylinder of the turning cylinder of rotor and cylinder 3 is also passable with the structure that shaft coupling 4 equijoins get up to form an axle A.
The resolution of described printer is 1440 (dpi), in this paper feeder, the diameter of cylinder 3 is set at 12.1276 (mm), simultaneously, the resolution of stepper motor 2 is set at 2160.The girth of cylinder 3 is the diameter of cylinder 3 and amassing of pi, is 38.1000 (mm).
Here, the resolution of printer is 1440, is to represent with made in Great Britain with custom in the industry.Below explanation in, long measure must be consistent, because of 1 inch be 25.4mm, so it is decided to be 1440/25.4 (point/mm).
The peritrochanteric of described stepper motor 2 is provided with 135 little teeth, and in 2 phase excitation modes, the basic step number that rotor turns around is set at 540 according to the relation between the little number of teeth of the structure of stator and rotor.
This stepper motor 2 can change forr a short time than the basic stride of 2 phase excitation modes by the micro-stepping excitation mode.
Micro-stepping excitation mode in example is that basic stride is divided into 1/4, and the resolution of progressive motor 2 is 4 times of basic step number, promptly 2160.
Therefore, the long-pending of the resolution of the girth of this routine intermediate roll 3 and printer is:
38．1000×1440／25．4=2160
This value is equivalent to the resolution of stepper motor 2.
Like this, when the printer resolution of this routine paper feeder 1 be that the diameter of X, cylinder is that the basic number of steps of Y, stepper motor is when being Z.
n·Z=πY·Z
The relation of n=4 is set up, and the resolution of corresponding printer can be correctly and carry out paper feeding effectively.
This paper feeder is set at 4 with the number of cutting apart of each basic stride of stepper motor, and it can be controlled at the power supply capacity of motor, heating etc. within the scope of actual permission.And can fully guarantee to drive the maximum and the composed view precision of rotor torque.
In addition, this stepper motor of this example can fully not guaranteed the composed view precision even the position detecting device of encoder etc. is not set yet.But from keeping composed view precision this point more exactly, also can adopt position detecting device is set, the positional information that this position detecting device is obtained feeds back to such structure in the rotation control.
Again then, set the stop position of regulation at stepper motor, when beginning paper feeding, also can adopt the action of forbidding reversing, a piece of paper to begin to finish a structure midway to a direction paper feeding formula to printing from printing.The magnetic hysteresis that this kind structure can more positively be avoided being caused by direction of transfer influences.
Below, just be illustrated about other concrete examples of the present invention.
The setting of the resolution of printer and each one and aforesaid concrete example are different in this example.Then identical as for other basic structures with aforesaid concrete example.Therefore, same parts is just attached with prosign and omitted explanation and diagram to it.
In this paper feeder 1, the resolution of printer is set at 2000 (dpi), promptly 2000/25.4 (diameter of point/mm), cylinder 3 is that the resolution of 10.9957 (mm), stepper motor 2 is 2720, the girth of cylinder 3 is 34.5440 (mm).
The peritrochanteric of stepper motor 2 is provided with 85 little teeth, and in 2 phase excitation modes, the basic number of steps that rotor circles is set at 340 according to the relation between the little number of teeth of the structure of stator and rotor.
Micro-stepping excitation mode in this example is that basic stride is divided into 1/8, and the resolution of stepper motor 2 is 8 times of basic number of steps, promptly 2720.
Therefore, the long-pending of the resolution of the girth of this routine intermediate roll 3 and printer is:
34.5440 this value of * 2000/25.4=2720 is equivalent to the resolution of stepper motor 2.
Like this, when the printer resolution of this routine paper feeder 1 be that the diameter of X, cylinder is that the basic number of steps of Y, stepper motor is when being Z.
n·Z=πY·Z
The relation of n=8 is set up, and the resolution of corresponding printer can be accurately and carry out paper feeding effectively.
Again then, this paper feeder is set at 8 with the number of cutting apart of each basic stride of stepper motor, and it can be controlled at power supply capacity, the heating of motor within the scope of practical application permission, and can fully guarantee to drive the maximum and the composed view precision of rotor torque.
In sum, the present invention is the printer paper feeder, being provided with paper feed roller and rotating the stepper motor of this cylinder, is in the paper feeder of arranged coaxial at the rotor of described cylinder and described stepper motor, and described stepper motor can carry out the rotation also littler than basic stride with the micro-stepping excitation mode.When the resolution of described printer is that the diameter of X, described cylinder is the basic number of steps of Y, described stepper motor when being Z, their pass is:
NX=π YX and π is a pi, n is the integer more than 2.
This paper feeder can corresponding printer resolution carry out accurate and effective paper feeding.
And then the present invention is the paper feeder that constitutes when n is a integer below 12 in the described formula.
This paper feeder is counted the integer that is set at below 12 with the cutting apart of each basic stride of stepper motor, and paper feeding more accurately and is effectively carried out.
That is to say, in the micro-stepping excitation mode,, produced the maximum that drives rotor torque and reduced along with the sectionalization of basic stride, and the problem that also descends of composed view precision.And this paper feeder is owing to set the number of cutting apart of each basic stride smallerly.Therefore, the power supply capacity of motor, heating etc. can be controlled in the scope of practical application, can fully guarantee to drive the maximum and the composed view precision of rotor torque again.
Claims (2)
1. paper feeder, this device is the printer paper feeder, be provided with the stepper motor of paper feed roller and the described cylinder of rotation, the rotor of described cylinder and described stepper motor is an arranged coaxial, it is characterized in that described stepper motor carries out the rotation also littler than basic stride with the micro-stepping excitation mode, when the resolution of described printer is that the diameter of X, described cylinder is that the basic number of steps of Y, described stepper motor is when being Z, their pass is
NZ=π YX and π is a pi, n is the integer more than 2.
2. the described paper feeder of claim 1 is characterized in that in described formula n is the integer below 12.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP174817/1999 | 1999-06-22 | ||
| JP17481799A JP2001002281A (en) | 1999-06-22 | 1999-06-22 | Paper feeding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1278486A true CN1278486A (en) | 2001-01-03 |
Family
ID=15985192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00118847 Pending CN1278486A (en) | 1999-06-22 | 2000-06-21 | Paper-feeding apparatus |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1063093B1 (en) |
| JP (1) | JP2001002281A (en) |
| CN (1) | CN1278486A (en) |
| DE (1) | DE60001872T2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100594168C (en) * | 2005-11-24 | 2010-03-17 | 光宝科技股份有限公司 | Paper-fetching mechanism |
| WO2022226960A1 (en) * | 2021-04-30 | 2022-11-03 | 深圳市博思得科技发展有限公司 | Paper feeding precision calibration method and calibration system |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4089469B2 (en) | 2002-03-14 | 2008-05-28 | セイコーエプソン株式会社 | Motor drive device and recording device |
| JP4559700B2 (en) * | 2002-12-17 | 2010-10-13 | 東京エレクトロン株式会社 | Vacuum vessel |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3951061A (en) * | 1974-05-17 | 1976-04-20 | Custom Printers, Inc. | Label printing apparatus |
| JPS63112175A (en) * | 1986-10-31 | 1988-05-17 | Nec Corp | High-accuracy paper feed controlling mechanism |
| US5588761A (en) * | 1995-12-08 | 1996-12-31 | Seib; Ken L. | Document printer having skew detection |
| JPH10264426A (en) * | 1997-03-27 | 1998-10-06 | Fuji Photo Film Co Ltd | Printer and printing method |
-
1999
- 1999-06-22 JP JP17481799A patent/JP2001002281A/en active Pending
-
2000
- 2000-06-08 DE DE2000601872 patent/DE60001872T2/en not_active Expired - Lifetime
- 2000-06-08 EP EP20000111848 patent/EP1063093B1/en not_active Expired - Lifetime
- 2000-06-21 CN CN 00118847 patent/CN1278486A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100594168C (en) * | 2005-11-24 | 2010-03-17 | 光宝科技股份有限公司 | Paper-fetching mechanism |
| WO2022226960A1 (en) * | 2021-04-30 | 2022-11-03 | 深圳市博思得科技发展有限公司 | Paper feeding precision calibration method and calibration system |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1063093B1 (en) | 2003-04-02 |
| DE60001872T2 (en) | 2003-12-04 |
| DE60001872D1 (en) | 2003-05-08 |
| EP1063093A1 (en) | 2000-12-27 |
| JP2001002281A (en) | 2001-01-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7560892B2 (en) | Method of controlling stepping motor, apparatus for controlling stepping motor, and printer | |
| CN1883955A (en) | Method for reducing printing position error and image forming apparatus using the same | |
| CN1278486A (en) | Paper-feeding apparatus | |
| CN1530307A (en) | Paper supplying mechanism of imager | |
| CN1739962A (en) | Printing cylinder support unit, positioning element, printing cylinder provided with positioning element, printing machine provided with printing cylinder support unit, and its use | |
| CN1106951C (en) | Stencil printer | |
| CN1077513C (en) | Printer apparatus | |
| US6702492B2 (en) | Recording apparatus | |
| CN1758149A (en) | Imaging device and be used for its paper-advance unit | |
| US7570007B2 (en) | Method of controlling stepping motor, apparatus for controlling stepping motor, and printer | |
| CN1624595A (en) | Sheet conveying apparatus, sheet treating apparatus and image forming apparatus | |
| CN1946890A (en) | Electronic positive feedwheel unit | |
| CN1197711C (en) | Printing equipment | |
| CN1107595C (en) | Dot line printer | |
| CN100349751C (en) | Printer | |
| CN1975590A (en) | Sheet processing apparatus and image forming apparatus | |
| CN1463074A (en) | Motor driver and registering instrument including same | |
| EP0996277B1 (en) | Device for adjusting the position of a cylindrical image carrier in relation to a scanning head | |
| EP0983864A3 (en) | Method of controlling a printhead movement based on a lead screw pitch to minimize swath-to-swath error in an image processing apparatus | |
| CN1526548A (en) | Focusing control of photohead in one printing plate exposure device | |
| JP3675236B2 (en) | Paper feeder | |
| JP2007282307A (en) | Control method of stepping motor, control device of stepping motor, and printer | |
| CN1232027C (en) | Step motor controller | |
| CN1298797A (en) | Device for controlling printing | |
| JP2882159B2 (en) | Dot line printer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |