CN201319113Y - Automatic control system under laser printing work environment - Google Patents
Automatic control system under laser printing work environment Download PDFInfo
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- CN201319113Y CN201319113Y CNU2008201446842U CN200820144684U CN201319113Y CN 201319113 Y CN201319113 Y CN 201319113Y CN U2008201446842 U CNU2008201446842 U CN U2008201446842U CN 200820144684 U CN200820144684 U CN 200820144684U CN 201319113 Y CN201319113 Y CN 201319113Y
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Abstract
The utility model relates to an automatic control system under the laser printing work environment, the automatic control system comprises a main control chip connected with a high-voltage power supply and a transfer printing roll respectively, and further comprises a transfer printing voltage feedback and adjustment circuit and an analog-digital converter; the transfer printing voltage feedback and adjustment circuit and the analog-digital converter are connected with the main control chip respectively, and the transfer printing voltage feedback and adjustment circuit is also connected with the transfer printing roll. The utility model has the beneficial effects that the laser print can not only have the optimal printing effect in the general office environment, but also have good printing effect under the low temperature or high temperature and high humidity environment through the dynamic adjustment of the transfer printing voltage, so that the laser print can be suitable for wider work environment. Therefore, the utility model avoids printing quality problem caused by the work environment.
Description
Technical field
The utility model relates to office equipment such as duplicating machine, printer and laser facsimile all-in-one, the particularly a kind of laser printing working environment robot control system(RCS) that can dynamically adjust transfer voltage in when printing.
Background technology
Present most of laser facsimile all-in-one working temperature is 0-30 ℃, i.e. the working environment temperature.And reality in use, and the laser facsimile all-in-one uses in the environment that temperature is lower, higher or humidity alters a great deal possibly.But print quality can descend when working in being below or above operating temperature range, phenomenons such as ghost image, the handwriting is blurred can occur.Present most of laser facsimile all-in-one all can't satisfy this demand that can adapt to super working environment scope.
Summary of the invention
Defective in view of above-mentioned prior art existence, the purpose of this utility model is: adapt to working environment widely in order to make laser printer, avoid when super working environment scope is printed, serious print quality problem occurring, a kind of laser printing working environment robot control system(RCS) is provided especially.This system has added the detection feedback to transfer roll and printer paper charging effect on existing laser printing equipment, calculate transfer roll and the current bulk resistor of printer paper by twice detection feedback, by the software control high-voltage power supply transfer voltage is dynamically adjusted then.Output is appropriate to the transfer voltage of work at present environment, thereby reaches good transfer printing effect.
The technical scheme that the utility model is taked for achieving the above object is: a kind of laser printing working environment robot control system(RCS), comprise respectively the main control chip that is connected with transfer roll with the high-tension electricity source plate, it is characterized in that: also comprise the transfer voltage feedback and adjust circuit and analog to digital converter, described transfer voltage feedback and adjustment circuit are connected with described main control chip respectively with analog to digital converter, and transfer voltage feedback and adjustment circuit are connected with described transfer roll again.
The beneficial effect that the utility model reaches is: dynamically adjust by transfer voltage, make laser printing that best printing effect can not only be arranged in general working environment, under low temperature or high temperature and high humidity environment, good printing effect is arranged also, make laser printing can adapt to working environment widely, from then on avoided the print quality problem that causes because of working environment.
Description of drawings
Fig. 1 is the utility model annexation synoptic diagram and as Figure of abstract.
Fig. 2 is the transfer voltage feedback and adjusts circuit theory diagrams.
Embodiment
With reference to the accompanying drawings the utility model is described further.
The utility model comprises respectively the main control chip that is connected with transfer roll 1 with the high-tension electricity source plate, also comprise the transfer voltage feedback and adjust circuit and analog to digital converter, transfer voltage feedback and adjustment circuit are connected with main control chip respectively with analog to digital converter, and transfer voltage feedback and adjustment circuit are connected with transfer roll 1 again.
Laser printing mainly divides following six steps: charging, exposure, development, transfer printing, photographic fixing, cleaning.Find that through the practice that studies for a long period of time during non-normal temperature environmental work, what influence the Laser Printed Image quality mainly is this step of transfer printing.After developing, carbon dust can be adsorbed on the toner cartridge by static electric field power, rushes to the opposite static charge of polarity on transfer roll, and the carbon dust on the toner cartridge will drop on the paper at electric field force and action of gravity.And the absorption carbon dust what the size of transfer electric field power can influence, and directly influences picture quality.Because toner cartridge is when printing one page A4 paper, approximately to rotate more than three circles, the middle carbon dust that can not clean on the toner cartridge, so always having the part carbon dust after most of carbon dust is transferred on the paper remains on the toner cartridge, this just requires the transfer electric field power can not be too big, can not be too little, inappropriate transfer electric field power all can make the residual carbon dust in front be transferred on the paper, causes ghost image.
In the laser printer, power panel is loaded into transfer voltage on transfer roll and the printer paper by electrode and they are charged and then produces electric field force, so what direct relation is arranged with the transfer printing effect is exactly the bulk resistor of transfer voltage, transfer roll and the bulk resistor of printer paper.
Experiment finds that the bulk resistor of transfer roll is influenced by environmental temperature, is inversely proportional to environment temperature, and promptly temperature is high more, and the transfer roll bulk resistor is more little; It is bigger that printer paper is influenced by ambient humidity, is inversely proportional to ambient humidity, and promptly humidity is big more, and the printer paper bulk resistor is more little.If transfer voltage is fixed, and transfer roll and printer paper are followed the words that environment temperature and humidity changes, the electric field force that is loaded into their generation of static electricity will be according to environmental change, cause the transfer printing poor effect, when especially exceeding common working environment, this just common laser printing not good reason of printing effect when non-working environment is worked.
Transfer voltage feedback of the present utility model and adjustment circuit comprise resistance R 1---R13, R15---and R18, slide rheostat R14, capacitor C 1---C7, diode D1---D4, triode Q1, Q2, operational amplifier N1, N2 and transformer T1, wherein: resistance R 10 1 terminations+5V power supply; The other end links to each other with an end of resistance R 13 and the base stage of triode Q2, this tie point links to each other with the input end TRPWM of main control chip simultaneously, the other end ground connection of resistance R 13, the collector of triode Q2 links to each other with resistance R 6 one ends, link to each other with an end of resistance R 8 simultaneously, the grounded emitter of triode Q2, another termination+18V power supply of resistance R 6, the 10th pin of the other end concatenation operation amplifier N1 of resistance R 8, simultaneously with an end of capacitor C 5, the negative terminal of diode D4, the anode of diode D3 links to each other, the other end ground connection of capacitor C 5, the positive ending grounding of diode D4, one termination of resistance R 5+18V power supply, the other end simultaneously with the 9th pin of operational amplifier N1, one end of resistance R 11 links to each other, the other end of resistance R 11 links to each other with sliding end simultaneously with the stiff end of slide rheostat R14, another stiff end ground connection of slide rheostat R14, one end of resistance R 4 links to each other with the 9th pin of operational amplifier N1, the other end links to each other with an end of capacitor C 3, the other end of capacitor C 3 links to each other with the 8th pin of operational amplifier N1, link to each other with an end of resistance R 7 simultaneously, one end of the other end of resistance R 7 and capacitor C 6, resistance R 9 one ends link to each other, the other end ground connection of capacitor C 6, the different name end of second group of primary coil of the other end of resistance R 9 and transformer T1 links to each other, the 4th pin of operational amplifier N1 connects+the 24V power supply, the 11st pin ground connection of operational amplifier N1, the end of the same name of second group of primary coil of the base stage of triode Q1 and transformer T1 links to each other, the different name end of first group of primary coil of the collector of triode Q1 and transformer T1 links to each other, the grounded emitter of triode Q1, termination of the same name+24V the power supply of first group of primary coil of transformer T1, the end while of the same name of transformer T1 secondary coil and an end of capacitor C 1, one end of capacitor C 2, one end of capacitor C 4 links to each other, the different name end while of transformer T1 secondary coil and the other end of capacitor C 1, the negative terminal of diode D1, the anode of diode D2 links to each other, the other end of capacitor C 2 links to each other with the anode of diode D1, the other end of capacitor C 4 links to each other with the negative terminal of diode D2, the one end while of resistance R 2 and the anode of diode D1, one end of resistance R 1, an end link to each other, the other end while of resistance R 2 and the negative terminal of diode D2, one end of resistance R 12 links to each other, the other end of resistance R 1 is connected with described transfer roll 1 as the output terminal TR of system, the other end of resistance R 3 links to each other with the negative terminal of diode D3, the other end while of resistance R 12 and an end of resistance R 16, the 5th pin of operational amplifier N2 links to each other, the other end ground connection of resistance R 16, the 6th pin while of operational amplifier N2 and an end of resistance R 17, one end of capacitor C 7, one end of resistance R 18 links to each other, the 7th pin while of operational amplifier N2 and the other end of resistance R 17, the other end of capacitor C 7, one end of resistance R 15 links to each other, the other end of resistance R 15 is connected with analog to digital converter as the feedback end TRREAD of system voltage, the other end ground connection of resistance R 18.
What the main control chip that the utility model adopts adopted is the STDC1100 chip.What analog to digital converter adopted is the ADCO8832 analog to digital converter.
Transfer voltage feedback and adjust that TRREAD is that transfer voltage is loaded into the feedback voltage on the transfer roll in the circuit converts input main control chip STDC1100 behind the numerical value to by an analog to digital converter ADC08832.Control Software outputs to the high-tension electricity source plate according to feedback by a modulating pulse TRPWM, adjusts transfer bias.
The adjustment process of transfer voltage is as follows:
(1), when printing preheating, on transfer roll, loads a fixing transfer voltage value earlier.When running into paper to level sensor, printer paper carries out the transfer voltage detection feedback first time.What detected this moment mainly is the charging feedback of transfer roll.
(2), after detecting for the first time, when treating that printer paper has just been gone between transfer roll and the toner cartridge, carry out the transfer voltage detection feedback second time.Detect this moment main the time transfer roll and the common charging feedback of printer paper.
(3), twice feedback sent into main control chip STDC1100, can know the bulk resistor situation of this moment transfer roll and printer paper according to value of feedback, go out suitable transfer voltage by the control corresponding computed in software, adjust transfer voltage by a modulating pulse TRPWM control high-voltage power supply.Thereby finish the adjustment of transfer voltage according to working environment.
Principle of work of the present utility model is: main control chip STDC1100 sends pwm signal by modulating pulse TRPWM, make triode Q2 be on off state, thereby make operational amplifier N1 output switching signal, shake in the concussion loop that causes being made of triode Q1 and transformer T1, voltage about the output terminal TR of the system generation-2800V of place, voltage is added on the transfer roll, and by resistance R 3, the loop of formations such as R12 and operational amplifier N2 converts the current value that the different conditions according to transfer roll changes to and feeds back to main control chip by TRREAD, according to circumstances adjust the output of TR voltage after the main control chip sampling, make it be in only state by the output of adjusting TRPWM.
Claims (4)
1, a kind of laser printing working environment robot control system(RCS), comprise respectively the main control chip that is connected with transfer roll (1) with the high-tension electricity source plate, it is characterized in that: also comprise the transfer voltage feedback and adjust circuit and analog to digital converter, described transfer voltage feedback and adjustment circuit are connected with described main control chip respectively with analog to digital converter, and transfer voltage feedback and adjustment circuit are connected with described transfer roll (1) again.
2, laser printing working environment robot control system(RCS) as claimed in claim 1, it is characterized in that: described transfer voltage feedback and adjust circuit comprise resistance (R1---R13), (R15---R18), slide rheostat (R14), electric capacity (C1---C7), diode (D1---D4), triode (Q1, Q2), operational amplifier (N1, N2) and transformer (T1), wherein: resistance (R10) one termination+5V power supply; The other end links to each other with an end of resistance (R13) and the base stage of triode (Q2), this tie point links to each other with the input end (TRPWM) of main control chip simultaneously, the other end ground connection of resistance (R13), the collector of triode (Q2) links to each other with resistance (R6) end, link to each other with an end of resistance (R8) simultaneously, the grounded emitter of triode (Q2), another termination+18V power supply of resistance (R6), the 10th pin of the other end concatenation operation amplifier (N1) of resistance (R8), simultaneously with an end of electric capacity (C5), the negative terminal of diode (D4), the anode of diode (D3) links to each other, the other end ground connection of electric capacity (C5), the positive ending grounding of diode (D4), one termination of resistance (R5)+18V power supply, the other end simultaneously with the 9th pin of operational amplifier (N1), one end of resistance (R11) links to each other, the other end of resistance (R11) links to each other with sliding end simultaneously with a stiff end of slide rheostat (R14), another stiff end ground connection of slide rheostat (R14), one end of resistance (R4) links to each other with the 9th pin of operational amplifier (N1), the other end links to each other with an end of electric capacity (C3), the other end of electric capacity (C3) links to each other with the 8th pin of operational amplifier (N1), link to each other with an end of resistance (R7) simultaneously, one end of the other end of resistance (R7) and electric capacity (C6), resistance (R9) end links to each other, the other end ground connection of electric capacity (C6), the other end of resistance (R9) links to each other with the different name end of second group of primary coil of transformer (T1), the 4th pin of operational amplifier (N1) connects+the 24V power supply, the 11st pin ground connection of operational amplifier (N1), the base stage of triode (Q1) links to each other with the end of the same name of second group of primary coil of transformer (T1), the collector of triode (Q1) links to each other with the different name end of first group of primary coil of transformer (T1), the grounded emitter of triode (Q1), termination of the same name+24V the power supply of first group of primary coil of transformer (T1), the end while of the same name of transformer (T1) secondary coil and an end of electric capacity (C1), one end of electric capacity (C2), one end of electric capacity (C4) links to each other, the different name end while of transformer (T1) secondary coil and the other end of electric capacity (C1), the negative terminal of diode (D1), the anode of diode (D2) links to each other, the other end of electric capacity (C2) links to each other with the anode of diode (D1), the other end of electric capacity (C4) links to each other with the negative terminal of diode (D2), the one end while of resistance (R2) and the anode of diode (D1), one end of resistance (R1), one end of resistance (R3) links to each other, the other end while of resistance (R2) and the negative terminal of diode (D2), one end of resistance (R12) links to each other, the other end of resistance (R1) is connected with described transfer roll (1) as the output terminal (TR) of system, the other end of resistance (R3) links to each other with the negative terminal of diode (D3), the other end while of resistance (R12) and an end of resistance (R16), the 5th pin of operational amplifier (N2) links to each other, the other end ground connection of resistance (R16), the 6th pin while of operational amplifier (N2) and an end of resistance (R17), one end of electric capacity (C7), one end of resistance (R18) links to each other, the 7th pin while of operational amplifier (N2) and the other end of resistance (R17), the other end of electric capacity (C7), one end of resistance (R15) links to each other, the other end of resistance (R15) is connected with analog to digital converter as the feedback end (TRREAD) of system voltage, the other end ground connection of resistance (R18).
3, laser printing working environment robot control system(RCS) as claimed in claim 1 is characterized in that: what described main control chip adopted is the STDC1100 chip.
4, laser printing working environment robot control system(RCS) as claimed in claim 1 is characterized in that: what described analog to digital converter adopted is the ADCO8832 analog to digital converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201446842U CN201319113Y (en) | 2008-12-19 | 2008-12-19 | Automatic control system under laser printing work environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201446842U CN201319113Y (en) | 2008-12-19 | 2008-12-19 | Automatic control system under laser printing work environment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201319113Y true CN201319113Y (en) | 2009-09-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201446842U Expired - Fee Related CN201319113Y (en) | 2008-12-19 | 2008-12-19 | Automatic control system under laser printing work environment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201319113Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111959138A (en) * | 2020-08-28 | 2020-11-20 | 深圳市新国都支付技术有限公司 | Printing system and printing method |
-
2008
- 2008-12-19 CN CNU2008201446842U patent/CN201319113Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111959138A (en) * | 2020-08-28 | 2020-11-20 | 深圳市新国都支付技术有限公司 | Printing system and printing method |
| CN111959138B (en) * | 2020-08-28 | 2022-07-01 | 深圳市新国都支付技术有限公司 | Printing system and printing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090930 Termination date: 20131219 |