CN103753974A - Printing control device for franking machine - Google Patents
Printing control device for franking machine Download PDFInfo
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- CN103753974A CN103753974A CN201310639454.9A CN201310639454A CN103753974A CN 103753974 A CN103753974 A CN 103753974A CN 201310639454 A CN201310639454 A CN 201310639454A CN 103753974 A CN103753974 A CN 103753974A
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Abstract
Provided is a printing control device for a franking machine. The printing control device comprises paper feed wheels, paper discharge wheels, rotary type optical-electricity encoders, printing heads and a printing controller. Output signals of the rotary type optical-electricity encoders are inputted into the printing controller, a printing initial value is set in the printing controller, and the printing controller controls output of the printing heads according to input signals of the rotary type optical-electricity encoders and the printing initial value; the encoders are arranged on the paper feed wheels and the paper discharge wheels, and the output signals of the two encoders are inputted into the printing controller; a paper sensor is arranged between the paper feed wheels and the printing heads. The printing control device can accurately track print media, and overprint and splicing errors are avoided by using shorter print media.
Description
Technical field
The present invention relates to the print control unit of a kind of print control unit, particularly franking machine.
Background technology
Post envelope is printed the basic print system that adopts one way, envelope or label (can be attached on envelope as postage paying voucher, similar stamp) from one end of printer, enter, after printing, from other one end, exit again, printing type can be ink-jet or hot stamping mode, and this special equipment is called franking machine.Franking machine substitutes traditional stamp in the mode of directly printing, and reduces costs.More than one printhead can be installed to expand the height of printing in one way print system.
Rotary photoelectric encoder is the stroke inductor that along circumference, rotational angle is divided into multiple unit pulses, often turns over a unit pulse, just reflects the forward travel distance of feed roller on girth, and namely paper sends distance to.
Prior art is generally, at one of paper feeding wheel or paper output wheel, rotary photoelectric encoder is installed.When encoder is arranged on paper feeding wheel, the paper afterbody of printing leaves after paper feeding wheel, and encoder cannot continue to follow the tracks of the variation of media location again, if at this moment print and also do not complete, accurate printing often can not be continued in the rear end of print area so; For this reason, need to use longer paper in the middle of reality, when making printhead prints, paper is still carried on paper feeding wheel, and this has just produced the back distance of longer printer page, and the length of back distance is at least greater than the distance of printhead to paper feeding wheel.When encoder is arranged on paper output wheel, can only arrive after paper output wheel at paper, could start to print according to the paper position tracing into, this has just produced the front distance of printer page, and front is apart from being at least greater than the distance of printhead apart from paper output wheel.The mode that existing single encoded device control is printed, individual envelope or the label length of printing are longer, have caused the huge waste of printed material.
Simultaneously, there is certain thickness print media and enter or leave the feed roller moment that photoelectric encoder is installed, this encoder of taking turns and be arranged on wheel is impacted, encoder can not accurately reflect the change in location of print media on moving direction, can affect printing precision, produce chromatography stitching error.
Summary of the invention
The present invention will solve chromatography stitching error of the prior art, print tracking media location inaccuracy, use the problem of longer print media, the present invention is provided a kind of franking machine print control unit for this reason, this franking machine print control unit structure arranges compactness, Method of printing is reasonable in design, can realize accurate tracking print media, use shorter print media, and realize without chromatography stitching error when more than one printhead is installed in system.
For solving the problem of chromatography stitching error, print tracking media location inaccuracy, the longer print media of use, the technical solution used in the present invention comprises paper feeding wheel, paper output wheel, rotary photoelectric encoder, printhead and print control unit, the output signal input print control unit of rotary photoelectric encoder, in print control unit, be provided with printing initial value, print control unit is according to input signal and the output of printing initial value control printhead of rotary photoelectric encoder; It is characterized in that rotary photoelectric encoder is two, be arranged on respectively on paper feeding wheel and paper output wheel, the output signal input print control unit of two rotary photoelectric encoders; A paper sensor is installed between paper feeding wheel and printhead.
In described print control unit, be provided with counter, reading code signal switching value, counter adopts the umber of pulse metering of rotary photoelectric encoder; Print media front end is by paper feeding wheel and while arriving paper sensor, and counter counts from zero, and counter first carries out increment counting according to the umber of pulse of paper feeding wheel rotary photoelectric encoder; When counter equals reading code signal switching value, counter is switched to the umber of pulse of paper output wheel rotary photoelectric encoder and carries out increment counting; Wherein reading code signal switching value is more than or equal to paper and arrives the numerical value of counter during paper output wheel, the numerical value of counter when clearly this switching value is less than paper and leaves paper feeding wheel.
While having two adjacent print at least, adjacent print distributes along print media direction of advance vertical interlaced, and described reading code signal switching value is set according to adjacent two the printhead noninterlace print areas in print area.
Described noninterlace print area is the region of the blank content of adjacent two printhead prints.
Described noninterlace print area is that in print area, adjacent print is printed respectively the region without the staggered content of vertical splicing.
Described noninterlace print area is region when one of them printhead prints of adjacent print, another printhead are not printed in print area.
Described noninterlace print area be in print area adjacent print perpendicular to printing direction of advance, having an area of the pattern at a distance of 5 millimeters of above blank blocks up and down.
Because the length of print media is greater than the distance of paper feeding wheel and paper output wheel all the time, no matter when, print media all at least contacts with one of them feed roller.Print control unit reads is the paper feeding distance and position signal of the rotary photoelectric encoder on the feed roller of even running, paper enters or departs from the signal that feed roller impacts and as the position signalling of printing, do not pass to print control unit, so the print signal of collection of the present invention always is stable paper feeding signal, has improved thus printing precision; Owing to adopting into and out of the switching of paper wheel coding, can accurately read the positional information of print media, first according to the code printing of paper feeding wheel, at paper, enter the suitable opportunity after paper output wheel, be switched to the code printing according to paper output wheel, just can not produce longer page front distance and page back distance, allow to use shorter print media.
In one way print system, adopt the rear collaborative work of multiple printhead splicings, printhead is interspersed perpendicular to paper feed direction, between each printhead, has relative position deviation.Entering letter wheel encoder and going out letter wheel encoder is asynchronous working, separately with the change in location of pulse signal independent feedback print media, when the signal of print control unit foundation is switched to paper output wheel encoder from paper feeding wheel encoder, may produce the feedback error of print media position, worst error is 1 pulse equivalency, and then causes printhead maximum to shift to an earlier date or lag behind 1 pulse equivalency printing.For high-precision one way franking machine printing type, the pulse error of switching signal will show as the stitching error on pattern, and the pattern edge that adjacent print is printed just there will be very significantly stitching error.
Such as a straight line vertical with paper direction of advance is printed respectively epimere 51 and hypomere 52 by two printheads, front printhead according to paper feeding wheel code printing the hypomere of straight line, paper advances, rectilinear movement will be carried out the printing of straight line epimere to a rear printhead, at this moment carry out signal switching, signal is switched to paper output wheel encoder from paper feeding wheel encoder, because feedback error, a rear printhead first produces in advance or lags behind and prints, in this case, rear printhead prints straight line epimere out may stagger in vertical direction with front printhead prints straight line hypomere out, the straight line printing upper, hypomere is not just on same ideal line, this has just produced obvious pattern splicing error, human eye can be told this pattern dislocation.Paper moves on, the content that front printhead is switched to after paper output wheel code printing arrives rear printhead, the position feedback error of forward and backward printhead is just synchronous, and front and back printhead lags behind simultaneously or in advance, the print What after this no longer shows stitching error.So stitching error is to occur in this time point that two printheads are switched to paper delivery end-of-encode from Formfeed encode to occur, from distance, reflecting is exactly the fixed range of adjacent print between paper direction of advance, it is the alternate position spike of adjacent print, if the width of empty frame between the jet orifice of adjacent print in accompanying drawing 3 is exactly the alternate position spike of adjacent print, the content in this distance is likely because signal switches the stitching error that causes print What.
The position gap of adjacent print from, select composed pattern region that human eye differentiates to go out or without the region of composed pattern as noninterlace print area, comply with this region and carry out setting signal switching value, can avoid pattern table to reveal stitching error.
In the present invention, noninterlace print area can be: print white space, the white space that adjacent print is not printed; Adjacent print respectively along print media direction of advance without the staggered area of the pattern of vertical splicing, adjacent print is printed separately, and there is no the staggered situation of vertical splicing; Or one of them does not print adjacent print, the region of another printhead prints; Or adjacent print is perpendicular to printing direction of advance, and the difficult alignment distance of differentiating of the human eye of being separated by, such as there being the area of the pattern at 5 millimeters of intervals on vertical.
Accompanying drawing explanation
Fig. 1 is structure of installing encoders schematic diagram of the present invention.
Fig. 2 is the pattern schematic diagram of straight line stitching error of the present invention.
Fig. 3 is the schematic diagram that is interspersed of two printheads of the present invention.
Fig. 4 is the Zone switched schematic diagram of the print What of the embodiment of the present invention one.
Fig. 5 is the Zone switched schematic diagram of the print What of the embodiment of the present invention two.
Fig. 6 is the Zone switched schematic diagram of the print What of the embodiment of the present invention three.
Fig. 7 is the Zone switched schematic diagram of the print What of the embodiment of the present invention four.
In figure, be labeled as: 1 paper feeding wheel, 2 paper output wheels, 3 rotary photoelectric encoders, 4 printheads, front printhead 41, rear printhead 42, paper sensor 5,51 epimere straight lines, 52 hypomere straight lines, 61 white spaces, block during the horizontal straight line of 62 single printhead prints, all blocks when printing the horizontal straight line consistent with paper feeding direction of 63 pairs of printheads, 64 adjacent print are at a distance of the epimere line segment of the noninterlace print area of 5 millimeters, and 65 adjacent print are at a distance of the hypomere line segment of the noninterlace print area of 5 millimeters.
The specific embodiment
Embodiment mono-
The print control unit of franking machine, comprises paper feeding wheel 1, paper output wheel 2, rotary photoelectric encoder 3, printhead 4 and print control unit, and print control unit is according to input signal and the output of printing initial value control printhead of rotary photoelectric encoder; Rotary photoelectric encoder is two, is arranged on respectively on paper feeding wheel and paper output wheel the output signal input print control unit of two rotary photoelectric encoders; A paper sensor 5 is installed between paper feeding wheel and printhead.
In print control unit, setting and printing initial value is 10000.
Reading code signal switching value is set according to the blank block 61 between the circular pattern in left side and the square frame pattern on right side, and in this example, setting switching value is 20000, the intermediate point of the corresponding white space of this value.
Print media 6 front ends are by paper feeding wheel and while arriving paper sensor, and counter is since 0 counting, and counter carries out increment counting according to the umber of pulse of paper feeding wheel encoder; When the value of counter is greater than initial value 10000, print control unit control printhead prints output, when counter is greater than reading code signal switching value 20000, counter is switched to the umber of pulse of rotary photoelectric encoder fixing on paper output wheel and carries out increment counting.
When reading code signal switches, paper has arrived at paper output wheel, from paper arrives paper sensor, then arrives paper output wheel to paper, and Formfeed encode device is being counted always, and in this example, reading code signal switching value is greater than the numerical value of Formfeed encode device accumulative total in this time period.Paper steadily enters paper output wheel, and controller just encodes to control the output of printhead according to the paper output wheel of steadily input.
In this example, two printheads all stop printing in switching cataloged procedure, have avoided chromatography splicing misprint.
Embodiment bis-
Different from embodiment mono-is, in the present embodiment, in view of paper transverse shifting, block 62 while having the horizontal straight line of single printhead prints in print area, by adjacent print, one of them prints the horizontal straight line being connected between left frame and right-hand frame in figure, another printhead is not printed, and according to this block, reading code signal switching value is set., can there is not the staggered error of pattern in the similar unit, printhead franking machine of this situation.
Embodiment tri-
Different from embodiment bis-is, the present embodiment is all being printed according to printing Zone switched interior pair of printhead, and region 63 is to consist of upper and lower two groups of horizontal straight lines, two of upper ends straight line be one group by one of them printhead prints, two of lower ends straight line be one group by another one printhead prints, these two groups of horizontal straight lines do not have vertical interlocking in vertical and paper direction of advance.
Embodiment tetra-
Different from enforcement one is, the noninterlace region of this enforcement reading code signal switching value foundation is, on the line segment 64 and 65 of vertical and paper feed direction, article two, line segment is printed by adjacent print respectively, perpendicular to 5 millimeters of two line segment spacing of paper direction of advance, in this region, carry out the switching of reading code signal, even because position feedback error has occurred, whether the upper lower line segment that human eye also can not differentiated 5 millimeters of intervals misplaces.
Claims (6)
1. the print control unit of franking machine, comprise paper feeding wheel, paper output wheel, rotary photoelectric encoder, printhead and print control unit, the output signal input print control unit of rotary photoelectric encoder, in print control unit, be provided with printing initial value, print control unit is according to input signal and the output of printing initial value control printhead of rotary photoelectric encoder; It is characterized in that rotary photoelectric encoder is two, be arranged on respectively on paper feeding wheel and paper output wheel, the output signal input print control unit of two rotary photoelectric encoders; A paper sensor is installed between paper feeding wheel and printhead;
In described print control unit, be provided with counter, reading code signal switching value, counter adopts the umber of pulse metering of rotary photoelectric encoder; Print media front end is by paper feeding wheel and while arriving paper sensor, and counter counts from zero, and counter first carries out increment counting according to the umber of pulse of paper feeding wheel rotary photoelectric encoder; When counter equals reading code signal switching value, counter is switched to the umber of pulse of paper output wheel rotary photoelectric encoder and carries out increment counting; The numerical value of counter when wherein reading code signal switching value is more than or equal to paper arrival paper output wheel.
2. the print control unit of franking machine as claimed in claim 1, it is characterized in that having at least two adjacent print, adjacent print is interspersed perpendicular to the direction of advance of print media, and described reading code signal switching value is set according to adjacent two the printhead noninterlace print areas in print area.
3. the print control unit of franking machine as claimed in claim 2, is characterized in that described noninterlace print area is the region of the blank content of adjacent two printhead prints.
4. the print control unit of franking machine as claimed in claim 2, is characterized in that described noninterlace print area is that in print area, adjacent print is printed respectively the region without the staggered content of vertical splicing.
5. the print control unit of franking machine as claimed in claim 2, is characterized in that described noninterlace print area is region when one of them printhead prints of adjacent print, another printhead are not printed in print area.
6. the print control unit of franking machine as claimed in claim 2, it is characterized in that described noninterlace print area be in print area adjacent print perpendicular to printing direction of advance, having an area of the pattern at a distance of 5 millimeters of above blank blocks up and down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310639454.9A CN103753974A (en) | 2013-12-04 | 2013-12-04 | Printing control device for franking machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310639454.9A CN103753974A (en) | 2013-12-04 | 2013-12-04 | Printing control device for franking machine |
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| CN103753974A true CN103753974A (en) | 2014-04-30 |
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| CN201310639454.9A Pending CN103753974A (en) | 2013-12-04 | 2013-12-04 | Printing control device for franking machine |
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Cited By (3)
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| CN105150684A (en) * | 2015-09-09 | 2015-12-16 | 宁波荣大昌办公设备有限公司 | Double-nozzle printing control system and control method |
| CN105172389A (en) * | 2015-09-09 | 2015-12-23 | 宁波荣大昌办公设备有限公司 | Control system and method for paper feeding and printing of printer |
| WO2020091731A1 (en) * | 2018-10-29 | 2020-05-07 | Hewlett-Packard Development Company, L.P. | Web shift compensation |
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| US6168333B1 (en) * | 1999-06-08 | 2001-01-02 | Xerox Corporation | Paper driven rotary encoder that compensates for nip-to-nip handoff error |
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| CN105150684A (en) * | 2015-09-09 | 2015-12-16 | 宁波荣大昌办公设备有限公司 | Double-nozzle printing control system and control method |
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| US11945207B2 (en) | 2018-10-29 | 2024-04-02 | Hewlett-Packard Development Company, L.P. | Web shift compensation |
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Application publication date: 20140430 |