CN1070115C - Printer capable of repeat printing and its method - Google Patents
Printer capable of repeat printing and its method Download PDFInfo
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- CN1070115C CN1070115C CN97120016A CN97120016A CN1070115C CN 1070115 C CN1070115 C CN 1070115C CN 97120016 A CN97120016 A CN 97120016A CN 97120016 A CN97120016 A CN 97120016A CN 1070115 C CN1070115 C CN 1070115C
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Abstract
The present invention relates to a printer capable of carrying out repeated printing and a repeated printing method. The printer comprises two clamp rollers, a stepping motor, a detector, a printing head and a control circuit. The repeated printing method comprises the following steps: a piece of paper is driven forwards by the two rollers to enable the detector to detect the front edge of the paper; a storage in the control circuit is reset; the paper is driven forwards by the stepping motor, and the paper is printed by the printing head; the step number for the forward movement of the stepping motor is recorded in the storage. After the one-time printing is completed, the stepping motor drives the paper backwards to enable the step number to be more than the step number of the forward movement. All the steps are repeated until the printing of the paper is completed.
Description
The present invention relates to a kind of printer capable of repeat printing and its method, refer to that especially a kind of leading edge of paper that can accurately detect is to improve the printer capable of repeat printing and its method of print quality when the duplicate printing paper.
Generally speaking, the duplicate printing method of printer is used for printing color figure or literal.When printing color figure or literal, printer can heavily cover paper back and forth several times to stamp different colors, for example red, blue, green three looks.When duplicate printing, printer is wanted and can be controlled print position exactly, different colors can be imprinted on the identical position, so that the color of figure or literal can accurately reappear.
See also the part-structure figure of existing printer 10 shown in Figure 1.Printer 10 includes two clamp rollers 12, a stepper motor 14, a detector 16, a printhead 18, a transmission device 20 and a paper storage device 22.Two clamp rollers 12 are in contact with one another in rotatable mode, are used for clamp and drive a paper 24 of being sent out by paper storage device 22.Stepper motor 14 is used for driving two clamp rollers 12.Transmission device 20 is located between stepper motor 14 and the two clamp rollers 12, is used for making stepper motor 14 to be driven two clamp rollers 12 forward or backward.Detector 16 is located at the front side of two clamp rollers 12, is used for detecting the leading edge 26 of paper 24.Printhead 18 is located at the rear side of two clamp rollers 12, is used for after detector 16 detects the leading edge 26 of paper 24 beginning print paper 24.
See also the calcspar of printer 10 shown in Figure 2.Printer 10 includes a control circuit 30, is provided with a memory 32 in it.Control circuit 30 is electrically connected on stepper motor 14, detector 16 and printhead 18, is used for controlling the printing of printer 10.Memory 32 is used for writing down the step number that stepper motor 14 advances or retreats, with the print position of control paper 24.When detector 16 detected the leading edge 26 of paper 24, control circuit 30 can be judged the position and replacement (reset) memory 32 of the leading edge 26 of paper 24 according to this and at once.Thereafter, control circuit 30 can control printhead 18 and stepper motor 14 beginning print papers 24.After finishing a printing, control circuit 30 can be according to the step number of advancing of the stepper motor 14 that is write down in the memory 32, and control step motor 14 drives two clamp rollers 12 backward, makes paper 24 retreat identical step number.Thereafter, control circuit 30 can be proceeded duplicate printing again, finishes up to the work of colour print.
In sum, the duplicate printing method of existing printer 10 has the following step:
(1) utilize the paper 24 that two clamp rollers 12 will be to be printed to drive forward, so that detector 16 is detected the leading edge 26 of paper 24;
(2) when detector 16 records the leading edge 26 of paper 24, the memory in the control circuit 30 32 can be reset (reset);
(3) utilize stepper motor 14 paper 24 to be driven and utilizes printhead 18 begin paper 24 is printed forward, the step number that stepper motor 14 is advanced can be recorded in the memory 32 simultaneously;
(4) after printing one time, utilize stepper motor 14 that paper 24 is driven backward, its step number of stepping back is same as the step number that it advances;
(5) repeat aforesaid the 3rd, 4 steps, till the printing of finishing paper 24.
Existing printer 10 is when utilizing two clamp rollers, 12 drive paper to advance or retreating, because the influence that frictional force caused between paper 24 and the printer 10, make and understand the slip that produces slightly between paper 24 and the roller 12, these slip meetings are accumulated via the program of duplicate printing, make printer 10 in that heavily cover can be with colour printing on inaccurate position when printing, this makes the effect of colour print have a greatly reduced quality.Because printer 10 decides the original position of printing fully according to the step number that is write down in the memory 32, therefore can't change this influence of sliding and causing because of paper.
Therefore, main purpose of the present invention is to provide a kind of printer and duplicate printing method thereof, can accurately detect the leading edge of paper when the duplicate printing paper, to improve print quality.
The object of the present invention is achieved like this, and a kind of duplicate printing method of printer promptly is provided, and described printer comprises: two clamp rollers are in contact with one another with clamp and drive a paper to be printed forward or backward in rotatable mode; One stepper motor is used for driving forward or backward two clamp rollers; One detector is located at the front side of two clamp rollers, is used for detecting the leading edge of described paper; One printhead is located at the rear side of two clamp rollers, is used for printing described paper; An and control circuit, be electrically connected on described stepper motor, detector and printhead, be used for controlling the printing of described printer, described control circuit comprises a memory, be used for writing down the step number that described stepper motor advances or retreats, to control the print position of described paper; Described duplicate printing method comprises the following steps:
(1) utilize this two clamps roller that described paper is driven forward, so that described detector is detected the leading edge of described paper;
(2) when described detector records the leading edge of described paper, with the memory replacement (reset) of described control circuit;
(3) utilize described stepper motor described paper to be driven and utilizes described printhead begin described paper is printed forward, and the step number that described stepper motor advanced is recorded in described memory;
(4) after printing one time, utilize described stepper motor that described paper is driven backward and be slightly more than the step number of before having advanced, so that the leading edge of described paper withdraws from the detection range of described detector; And
(5) repeat above each step, till the printing of finishing described paper.
The present invention also provides a kind of printer, and it comprises: two clamp rollers are in contact with one another with clamp and drive paper to be printed in rotatable mode; One stepper motor is used for driving two clamp rollers; One detector is located at the front side of two clamp rollers, is used for detecting the leading edge of described paper, and described detector comprises that a light emitted device and that is used for launching light is used for receiving the light source receiving device of the light that described light emitted device launched; One printhead is located at the rear side of two clamp rollers, is used for printing described paper; An and control circuit, be electrically connected on described stepper motor, detector and printhead, be used for controlling the printing of described printer, described control circuit comprises a memory, be used for writing down the step number of described stepper motor running, controlling the print position of described paper, and when described detector records the leading edge of described paper, the memory of described control circuit is reset; Described two clamp rollers respectively have a rolling surface, in rotatable mode therebetween with described paper clamp, respectively be provided with an endless groove on the rolling surface of two clamp rollers, two endless grooves are line style to be arranged, so that the light that described light emitted device is launched is able to be received by described light source receiving device by two endless grooves.
The present invention provides a kind of printer in addition, and it comprises: two clamp rollers are in contact with one another with clamp and drive paper to be printed in rotatable mode; One stepper motor is used for driving two clamp rollers; One detector is located at the front side of two clamp rollers, is used for detecting the leading edge of described paper, and described detector comprises that a light emitted device and that is used for launching light is used for receiving the light source receiving device of the light that described light emitted device launched; One printhead is located at the rear side of two clamp rollers, is used for printing described paper; An and control circuit, be electrically connected on described stepper motor, detector and printhead, be used for controlling the printing of described printer, described control circuit comprises a memory, be used for writing down the step number of described stepper motor running, controlling the print position of described paper, and when described detector records the leading edge of described paper, the memory of described control circuit is reset; Described light emitted device via lens with its light focusing of launching in the position that the leading edge of described paper can be passed through, so that described light source receiving device is able to the accurate leading edge that detects described paper.
Below in conjunction with accompanying drawing, embodiments of the invention are described, wherein:
Fig. 1 is the part-structure schematic diagram of existing printer;
Fig. 2 is the calcspar of printer shown in Figure 1;
Fig. 3 is the part-structure schematic diagram of printer of the present invention;
Fig. 4 is the front view of clamp roller shown in Figure 3;
Fig. 5 is the calcspar of printer shown in Figure 3.
See also shown in Fig. 3,4, printer 40 of the present invention includes two clamp rollers 42, a stepper motor 44, a detector 46, a printhead 48, a transmission device 50 and a paper storage device 52.Two clamp rollers 42 respectively include a rolling surface 56, are used for being in contact with one another with clamp and driving in rotatable mode respectively being provided with an endless groove 54, two endless grooves 54 on paper 58, the two clamp rollers 42 of being sent by paper storage device 52 and being arranged above and below in line.Stepper motor 44 is used for driving two clamp rollers 42.Transmission device 50 is located between stepper motor 44 and the two clamp rollers 42, is used for making stepper motor 44 to be driven two clamp rollers 42 forward or backward.Detector 46 is located at the forward position of the contact edge that is next to two clamp rollers 12, with the leading edge 60 that accurately detects paper 58.Detector 46 includes the light source receiving device 66 that a light emitted device 62 and that is used for launching light is used for receiving the light that light emitted device 62 launched, light emitted device 62 via lens 64 with its light focusing of launching in the position that the leading edge 60 of paper 58 can be passed through.Printhead 48 is located at the rear side of two clamp rollers 42, is used for after detector 46 detects the leading edge 60 of paper 58 beginning print paper 58.
See also the calcspar of printer 40 shown in Figure 5.Printer 40 includes a control circuit 70, is provided with a memory 72 in it.Control circuit 70 is electrically connected on stepper motor 44, detector 46 and printhead 48, is used for controlling the printing of printer 40.Memory 72 is used for writing down the step number that stepper motor 44 advances or retreats, with the print position of control paper 58.When the leading edge 60 of paper 58 arrived focusing place of light emitted device 62, the light intensity that light source receiving device 66 is received can significantly descend, and control circuit 70 can be judged the position of the leading edge 60 of paper 58 according to this and at once, and resetting memory 72.Thereafter, control circuit 70 can control printhead 48 and stepper motor 44 beginning print papers 58.After finishing a printing, the step number of advancing according to the stepper motor 44 that is write down in the memory 72, control circuit 70 can drive two clamp rollers 42 by control step motor 44 backward, make paper 58 retreat the step number of slightly Duoing, and then detect the leading edge 60 of paper 58 with detector 46 again than the step number of advancing.Control circuit 70 can be proceeded duplicate printing afterwards, finishes up to the work of colour print.
The duplicate printing method that the control circuit 70 of printer 40 of the present invention is implemented includes the following step:
(1) utilize two clamp rollers 42 that paper 58 is driven forward, so that detector 46 is detected the leading edge 60 of paper 58;
(2) when detector 46 records the leading edge 60 of paper 58, the memory in the control circuit 70 72 can be reset (reset);
(3) utilize stepper motor 44 paper 58 to be driven and utilizes printhead 48 begin paper 58 is printed forward, the step number that stepper motor 44 is advanced can be recorded in the memory 72 simultaneously;
(4) after printing one time, utilize stepper motor 44 that paper 58 is driven backward, its step number of stepping back is slightly more than the step number that it advances, so that the leading edge 60 of paper 58 can withdraw from the detection range of detector 46;
(5) repeat aforementioned the 1st, 2,3,4 steps, till the printing of finishing paper 58.
Compare with existing printer 10 and duplicate printing method thereof, printer 40 of the present invention and duplicate printing method thereof have following advantage: the rolling surface 56 of the two clamp rollers 42 of (1) printer 40 is provided with two endless grooves 54 that are the linear array configuration, the light that the light emitted device 62 of detector 46 is launched is received by light source receiving device 66 by two endless grooves 54, so shortened the distance of the contact edge of detector 46 and two clamp rollers 42, when making the leading edge 60 1 of paper 58 leave contact edge, will in the shortest distance, be detected, can avoid the paper bending distortion, thereby improve the accuracy that detects the paper leading edge locus.(2) light launched of the light emitted device 62 of detector 46 focuses on the position that the leading edge 60 of paper 58 can be passed through via lens 64, therefore can significantly improve the accuracy that detects the paper leading edge locus.(3) when each duplicate printing, the leading edge 60 of paper 58 can be detected again, setting the original positions of being deposited in the memory 72 in the control circuit 70, so control circuit 70 can accurately control print position, various color can accurately heavily be covered be printed on the identical position.
Claims (15)
1. the duplicate printing method of a printer is characterized in that, described printer comprises: two clamp rollers are in contact with one another with clamp and drive a paper to be printed forward or backward in rotatable mode; One stepper motor is used for driving forward or backward two clamp rollers; One detector is located at the front side of two clamp rollers, is used for detecting the leading edge of described paper; One printhead is located at the rear side of two clamp rollers, is used for printing described paper; An and control circuit, be electrically connected on described stepper motor, detector and printhead, be used for controlling the printing of described printer, described control circuit comprises a memory, be used for writing down the step number that described stepper motor advances or retreats, to control the print position of described paper; Described duplicate printing method comprises the following steps:
(1) utilize this two clamps roller that described paper is driven forward, so that described detector is detected the leading edge of described paper;
(2) when described detector records the leading edge of described paper, with the memory replacement (reset) of described control circuit;
(3) utilize described stepper motor described paper to be driven and utilizes described printhead begin described paper is printed forward, and the step number that described stepper motor advanced is recorded in described memory;
(4) after printing one time, utilize described stepper motor that described paper is driven backward and be slightly more than the step number of before having advanced, so that the leading edge of described paper withdraws from the detection range of described detector; And
(5) repeat above each step, till the printing of finishing described paper.
2. duplicate printing method as claimed in claim 1 is characterized in that, is provided with a transmission device between described stepper motor and the two clamp rollers, is used for making described stepper motor to be driven two clamp rollers forward or backward.
3. duplicate printing method as claimed in claim 1 is characterized in that, described detector comprises that a light emitted device and that is used for launching light is used for receiving the light source receiving device of the light that described light emitted device launched.
4. duplicate printing method as claimed in claim 3, it is characterized in that, described light emitted device via lens with its light focusing of launching in the position that the leading edge of described paper can be passed through, so that described light source receiving device is able to the accurate leading edge that detects described paper.
5. duplicate printing method as claimed in claim 4, it is characterized in that, when focusing place by described light emitted device of the leading edge of described paper, the light intensity that described light source receiving device received can significantly descend, and makes described control circuit be judged the memory of the position of described paper front edge and the described control circuit of resetting at once.
6. duplicate printing method as claimed in claim 3, it is characterized in that, described two clamp rollers respectively have a rolling surface, in rotatable mode therebetween with described paper clamp, respectively be provided with an endless groove on the described rolling surface, two endless grooves are line style to be arranged, so that the light that described light emitted device is launched is able to be received by described light source receiving device by two endless grooves.
7. duplicate printing method as claimed in claim 1, it is characterized in that, described two clamp rollers respectively have a rolling surface, be in contact with one another in rotatable mode and form a contact edge, described detector is located at a position that is next to the front side of described contact edge, so that described detector is able to accurately detect the leading edge of described paper.
8. duplicate printing method as claimed in claim 1 is characterized in that described printer is a color printer, and described duplicate printing method is used for printing the color of several different colours.
9. printer is characterized in that it comprises: two clamp rollers are in contact with one another with clamp and drive paper to be printed in rotatable mode; One stepper motor is used for driving two clamp rollers; One detector is located at the front side of two clamp rollers, is used for detecting the leading edge of described paper, and described detector comprises that a light emitted device and that is used for launching light is used for receiving the light source receiving device of the light that described light emitted device launched; One printhead is located at the rear side of two clamp rollers, is used for printing described paper; An and control circuit, be electrically connected on described stepper motor, detector and printhead, be used for controlling the printing of described printer, described control circuit comprises a memory, be used for writing down the step number of described stepper motor running, controlling the print position of described paper, and when described detector records the leading edge of described paper, the memory of described control circuit is reset; Described two clamp rollers respectively have a rolling surface, in rotatable mode therebetween with described paper clamp, respectively be provided with an endless groove on the rolling surface of two clamp rollers, two endless grooves are line style to be arranged, so that the light that described light emitted device is launched is able to be received by described light source receiving device by two endless grooves.
10. printer as claimed in claim 9, it is characterized in that, described two clamp rollers respectively have a rolling surface, be in contact with one another in rotatable mode and form a contact edge, described detector is located at a position that is next to the front side of described contact edge, so that described detector is able to accurately detect the leading edge of described paper.
11. printer as claimed in claim 9, it is characterized in that, described light emitted device via lens with its light focusing of launching in the position that the leading edge of described paper can be passed through, so that described light source receiving device is able to the accurate leading edge that detects described paper.
12. printer as claimed in claim 11, it is characterized in that, when focusing place by described light emitted device of the leading edge of described paper, the light intensity that described light source receiving device received can significantly descend, make described control circuit be judged the position of described paper front edge at once, and the memory of the described control circuit of resetting.
13. a printer is characterized in that it comprises: two clamp rollers are in contact with one another with clamp and drive paper to be printed in rotatable mode; One stepper motor is used for driving two clamp rollers; One detector is located at the front side of two clamp rollers, is used for detecting the leading edge of described paper, and described detector comprises that a light emitted device and that is used for launching light is used for receiving the light source receiving device of the light that described light emitted device launched; One printhead is located at the rear side of two clamp rollers, is used for printing described paper; An and control circuit, be electrically connected on described stepper motor, detector and printhead, be used for controlling the printing of described printer, described control circuit comprises a memory, be used for writing down the step number of described stepper motor running, controlling the print position of described paper, and when described detector records the leading edge of described paper, the memory of described control circuit is reset; Described light emitted device via lens with its half light focusing of launching in the position that the leading edge of described paper can be passed through, so that described light source receiving device is able to the accurate leading edge that detects described paper.
14. printer as claimed in claim 13, it is characterized in that, described two clamp rollers respectively have a rolling surface, be in contact with one another in rotatable mode and form a contact edge, described detector is located at a position that is next to the front side of described contact edge, so that described detector is able to accurately detect the leading edge of described paper.
15. printer as claimed in claim 13, it is characterized in that, when focusing place by described light emitted device of the leading edge of described paper, the light intensity that described light source receiving device received can significantly descend, making described control circuit is judging the position of described paper front edge at once, and the memory of the described control circuit of resetting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97120016A CN1070115C (en) | 1997-09-30 | 1997-09-30 | Printer capable of repeat printing and its method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97120016A CN1070115C (en) | 1997-09-30 | 1997-09-30 | Printer capable of repeat printing and its method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1212927A CN1212927A (en) | 1999-04-07 |
| CN1070115C true CN1070115C (en) | 2001-08-29 |
Family
ID=5175728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97120016A Expired - Fee Related CN1070115C (en) | 1997-09-30 | 1997-09-30 | Printer capable of repeat printing and its method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1070115C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101407138B (en) * | 2007-10-10 | 2010-06-23 | 诚研科技股份有限公司 | Object moving device |
| CN111070908B (en) * | 2019-12-26 | 2020-12-01 | 厦门汉印电子技术有限公司 | Direct printing type certificate card printing method and device, certificate card printer and storage medium |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1138310A (en) * | 1994-10-06 | 1996-12-18 | 株式会社Pfu | Paper feed method and apparatus for printers |
-
1997
- 1997-09-30 CN CN97120016A patent/CN1070115C/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1138310A (en) * | 1994-10-06 | 1996-12-18 | 株式会社Pfu | Paper feed method and apparatus for printers |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1212927A (en) | 1999-04-07 |
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