CN1153098C - Electric duplication device and control method thereof - Google Patents

Electric duplication device and control method thereof Download PDF

Info

Publication number
CN1153098C
CN1153098C CNB961054573A CN96105457A CN1153098C CN 1153098 C CN1153098 C CN 1153098C CN B961054573 A CNB961054573 A CN B961054573A CN 96105457 A CN96105457 A CN 96105457A CN 1153098 C CN1153098 C CN 1153098C
Authority
CN
China
Prior art keywords
mentioned
transfer
recording materials
voltage
toner
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.)
Expired - Fee Related
Application number
CNB961054573A
Other languages
Chinese (zh)
Other versions
CN1139768A (en
Inventor
佐藤五郎
喜
望月明
一
村越稔
沼田重喜
松野顺一
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Omron Financial System Co Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from JP09816395A external-priority patent/JP3357969B2/en
Priority claimed from JP7185822A external-priority patent/JPH0934281A/en
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Publication of CN1139768A publication Critical patent/CN1139768A/en
Application granted granted Critical
Publication of CN1153098C publication Critical patent/CN1153098C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/14—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base
    • G03G15/16—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern, e.g. magnetic transfer
    • G03G15/163—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern, e.g. magnetic transfer using the force produced by an electrostatic transfer field formed between the second base and the electrographic recording member, e.g. transfer through an air gap
    • G03G15/1635—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern, e.g. magnetic transfer using the force produced by an electrostatic transfer field formed between the second base and the electrographic recording member, e.g. transfer through an air gap the field being produced by laying down an electrostatic charge behind the base or the recording member, e.g. by a corona device
    • G03G15/1645—Arrangements for controlling the amount of charge
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/50—Machine control of apparatus for electrographic processes using a charge pattern, e.g. regulating differents parts of the machine, multimode copiers, microprocessor control
    • G03G15/5029—Machine control of apparatus for electrographic processes using a charge pattern, e.g. regulating differents parts of the machine, multimode copiers, microprocessor control by measuring the copy material characteristics, e.g. weight, thickness
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/14—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base
    • G03G15/16—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern, e.g. magnetic transfer
    • G03G15/1605—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern, e.g. magnetic transfer using at least one intermediate support

Abstract

This electrophotographic device is constituted so that a visible image is formed by attaching toner to the surface of an image carrier, a toner image on the image carrier is electrostatically transferred on the recording medium by using a transfer roller and the toner image on the medium is made to be a permanent image by heat. Then, it is provided with a voltage controller controlling the voltage from a power source for transfer and a recording medium thickness detection device detecting the thickness of the medium. In a process that the medium is carried to a transfer part, the thickness of the medium is detected by the detection device in advance. By referring to the value thereof, the power source is controlled so that the optimum transfer voltage is generated only for an optional time.

Description

Electric duplication device and control method thereof
The present invention relates to laser printer and duplicating machine etc., particularly relate to the utmost point and be suitable for toner is looked like to be electrostatically transferred to electric duplication device and control method on the recording materials.
This technology as the spy open flat 2-300774 communique and the flat 4-190381 communique of Te Kai disclosed, by the impedance of detection record material, control is added to the voltage on the transfer platen, prevents the reduction of transfer printing performance.In addition, the transfer voltage that undertaken by the difference of recording materials kind that also has is controlled.Therefore, as the material of recording materials not only the PPC of use such as printer also can carry out record with paper but also OHP with paper and envelope etc. with high image quality.But, when the impedance at recording materials under the identical environmental baseline changes in image recording when big, when for example recording materials are the book shape, if recording materials thickness thickening, impedance will increase, can not be by electrostatic attraction toner picture, thus cause that the transfer printing performance reduces, however the recording materials variation in thickness causes the countermeasure that the transfer printing performance reduces in considering to prevent to write down.In addition, even want when variation in thickness, just to carry out the impedance detection of recording materials, but do not determine the device in the moment of impedance detection in the electric duplication device that formerly has.
The present invention aims to provide a kind of electric duplication device and control method thereof, even this electric duplication device has the transfer device of the transfer printing performance that also can always keep high in recording process when the thickness of recording materials changes.
In order to achieve the above object, electric duplication device of the present invention has the toner of formation toner picture on the image carriers such as photosensitive roller that rotate as implementing device, transmit the conveyer of the recording materials such as book of the above-mentioned toner picture of transfer printing, detect the thickness detection apparatus of thickness of the recording materials of above-mentioned transmission, toner on the above-mentioned image carrier is looked like to be transferred to transfer device on the above-mentioned recording materials that send, the arithmetic unit that the moment that contacts with above-mentioned transfer device according to the above-mentioned recording materials of transfer rate property calculation of the position of above-mentioned thickness detection apparatus and above-mentioned recording materials and above-mentioned image carrier and above-mentioned transfer device are added to the pressure characteristic on the above-mentioned recording materials, and control above-mentioned transfer device with the extruding force control device of above-mentioned recording materials to the extruding force of above-mentioned image carrier extruding according to the calculated value of the above-mentioned moment and pressure characteristic, and have and produce the transfer voltage generation device be applied to the transfer voltage between above-mentioned transfer device and the above-mentioned image carrier, detect the transfer printing current sensing means of the electric current that in above-mentioned recording materials, passes through by the voltage that produces by above-mentioned transfer voltage generation device, and control the transfer voltage control device of above-mentioned transfer voltage according to the current value that in above-mentioned recording materials, passes through, have the fixing device that the toner that will be transferred on the above-mentioned recording materials looks like to carry out photographic fixing in addition.
Above-mentioned fixing device in the electric duplication device of the present invention has stressed pressure applying means of the recording materials that carry out photographic fixing and detection and controls the pressure control device of above-mentioned pressure.
Above-mentioned recording materials are that thickness is above card paper or multi-ply paper of 0.2mm.
Electric duplication device of the present invention can print on thickness is the above-mentioned recording materials of card paper more than the 0.2mm or multi-ply paper.
In addition, the described toner in the electric duplication device of the present invention can forward and reversely rotate respectively as implementing device, conveyer and transfer device, above-mentioned recording materials can be returned to insert a side.
The toner of electric duplication device of the present invention has being copied that thing scans as implementing device and transfer device and forms the scanister of toner picture at above-mentioned toner on as implementing device.
Charged surface at image carrier forms electrostatic latent image thereby the control method of electric duplication device of the present invention comprises the following steps: to make image carrier, and makes toner be attached to formation toner picture on this electrostatic latent image; Voltage is added to is used for toner is looked like to be transferred to transfer means on the recording materials that send, and control voltage; To measure with voltage and be added to sensing lead electric current on the transfer means; Ask the 1st optimum voltage according to load current, and the 1st optimum voltage is directly proportional with the thickness of recording materials, calculate the 2nd optimum voltage, apply the moment of the 2nd optimum voltage and apply time of the 2nd optimum voltage, and above-mentioned transfer means is to the extruding force of above-mentioned recording materials; And utilize result of calculation to control above-mentioned transfer means.
According to said structure, can and control the suitable extruding force of transfer device according to the THICKNESS CALCULATION of recording materials such as book, thereby even the book that gets up for the bookbinding demi-inflation also can utilize suitable transfer pressure transfer printing toner picture correctly.In addition, by detecting electric current, the control transfer voltage in recording materials, circulate, can prevent the error of the transfer printing precision that causes because of the water percentage of recording materials etc. during transfer printing.Therefore, the card paper and the OHP that are about 0.1mm with thickness compare with paper, for the card paper of thickness and book etc. with several times～more than tens of times, do not bound the influence of part and the influence of thickness yet, thereby can correctly be carried out transfer printing and photographic fixing as the toner picture that generating apparatus makes utilizing toners such as photosensitive roller.
Fig. 1 is the structural drawing of the 1st embodiment of the present invention.
Fig. 2 is the block diagram of the control device among Fig. 1.
Fig. 3 is the transfer voltage control time figure among Fig. 1.
Fig. 4 is the process flow diagram of the transfer voltage control flow in the presentation graphs 1.
Fig. 5 is the tables of data of the interior memory storage of the control device in the presentation graphs 1.
Fig. 6 is the curve map of the relation of expression recording materials thickness and optimal transfer voltage.
Fig. 7 is the sectional structure chart of the 2nd embodiment of the present invention.
Fig. 8 is the block diagram of the control device of expression the 3rd embodiment of the present invention.
Fig. 9 is the curve map of the optimal transfer voltage characteristic of expression the 3rd embodiment of the present invention.
Figure 10 is the tables of data of the interior memory storage of the control device of expression the 3rd embodiment of the present invention.
Figure 11 is the transfer voltage control time figure of the 3rd embodiment of the present invention.
Figure 12 is the process flow diagram of the transfer voltage control flow of expression the 3rd embodiment of the present invention.
Figure 13 is for the curve map of the optimal transfer voltage characteristic of recording materials thickness in each environment.
Figure 14 is the simple side view of the 4th embodiment of electric duplication device of the present invention.
Figure 15 is the figure of the action of explanation embodiment shown in Figure 1.
Figure 16 is the figure of the action of explanation embodiment shown in Figure 1.
Figure 17 is the figure of the action of explanation embodiment shown in Figure 1.
Figure 18 is the figure of the action of explanation embodiment shown in Figure 1.
Figure 19 is the figure of the action of explanation embodiment shown in Figure 1.
Figure 20 is the curve map of expression to the reacting force characteristic of the compression deformation of the transfer platen of use bipeltate.
Figure 21 is the curve map of expression transfer platen to the relation of the transfer pressure of recording materials and hollow rate.
Figure 22 is the schematic side view that other embodiment of the present invention are the book printer.
Figure 23 is the figure that presses the book of standard format printing.
Below, the 1st embodiment of electric duplication device of the present invention is described with reference to Fig. 1.As shown in Figure 1, this electric duplication device has the Charging system 1 that makes photosensitive roller 6 charged, form the exposure device 2 of electrostatic latent image on the surface of photosensitive roller 6, toner is attached to forms the developing apparatus 3 of toner on the electrostatic latent image as 5a, toner looked like to be transferred to the transfer platen 7 on the recording materials 20 that send, control is added to the voltage-operated device 18 of the voltage on the transfer platen 7, make toner on the recording materials 20 look like to become fixing mechanisms such as the heated roller 11 of permanent image and pressing roller 13, it be provided with detection record material 20 thickness recording materials thickness detection apparatus 16 and obtain the voltage that adds according to the thickness of recording materials 20, calculate the alive moment and alive time simultaneously, and with the control device 100 of this result of calculation to voltage-operated device 18 transmission.
That is, present embodiment is made of control device 100, the A of duplicating portion, the B of transfer printing portion, recording materials transport unit C and the D of photographic fixing portion.
In the A of duplicating portion, Charging system 1, exposure device 2, developing apparatus 3, discharge system 9 and swabbing pig 10 be arranged on photosensitive roller 6 around.
In the B of transfer printing portion, with photosensitive roller 6 transfer platen 7 is set relatively, contact with photosensitive roller 6 by the pressure of extruder member 8 with appointment.In addition, the power supply 19 that transfer printing is used is connected with the metal-cored of transfer platen 7, and the output voltage of power supply 19 can change, and exports the voltage of appointment accordingly with the control signal that is connected the voltage-operated device 18 on the power supply 19.
In recording materials transport unit C, delivery roller 15a is set, 15b at delivery roller 15a, is provided with the recording materials guide 17 that recording materials 20 is directed to B of transfer printing portion and the D of photographic fixing portion between 15b and the transfer platen 7 and on the transmission route between B of transfer printing portion and the D of photographic fixing portion.In addition, at delivery roller 15a, the top of the recording materials guide 17 between 15b and the transfer platen 7, and at the recording materials thickness detection apparatus 16 that the thickness of detection record material 20 is set than the transfer platen 7 and the upstream of the direction of transfer of the more close recording materials 20 of photosensitive roller 6 extruding position contacting.When recording materials thickness detection apparatus 16 is arranged on the below, can on the part of recording materials guide 17, the hole be set.Recording materials thickness detection apparatus 16 can use for example displacement transducer of optical profile type, ultrasonic type or contact.Because this is well-known technology, so detailed explanation is omitted.
The D of photographic fixing portion by inside be provided with the heated roller 11 of thermal source 12, Temperature Detector 14 and the pressing roller 13 that detects the surface temperature of heated roller 11 constitutes.
Below, a series of actions that is formed into photographic fixing from the image of present embodiment is described.
According to the image recording commencing signal from control device 100, photosensitive roller 6 drives along the rotation of arrow V direction by the peripheral speed of appointment.And, in the dark make the surface of photosensitive roller 6 charged equably by Charging system 1.Then, to local irradiates light, form electrostatic latent image by exposure device 2 corresponding to document image.In developing apparatus 3, charged toner 4 is attached to electrostatic means on the sub-image on surface of photosensitive roller 6, be that toner is as 5a but make it to become video.By photosensitive roller 6 is rotated along camera lens V direction, the toner on the photosensitive roller 6 just moves to and transfer platen 7 position contacting as 5a.
When carrying out with these actions, recording materials 20 are sent to delivery roller 15a by not shown to paper roller, the position of 15b, the direct of travel of correcting paper, and with the paper adjustment neat after, constantly with the transmission of recording materials 20 constantly adjust consistent as the driving of 5a the toner on the photosensitive roller 6 and to transfer platen 7 transmission.In the process that transfer platen 7 transmits,, and send signal to control device 100 at recording materials 20 by the thickness of the recording materials thickness detection apparatus 16 detection record materials 20 that are arranged on the top of transmitting route.
Transfer platen 7 forms the part of the transfer printing B of portion, by the recording materials 20 that send closely being contacted with photosensitive roller 6 and applying mechanical pressure and transfer electric field, the toner on the photosensitive roller 6 is transferred on the recording materials 20 as 5a from the behind of recording materials 20.Here, be added to transfer electric field takes place being used on the transfer platen 7 voltage (transfer voltage) for example according to the dutycycle of the input signal that sends from voltage-operated device 18 (ON time of pulse signal with closing time ratio), supply with by the power supply 19 that can change output voltage arbitrarily continuously.And, the transfer voltage corresponding with recording materials thickness is added on the transfer platen 7.When there is the 20a of bookbinding portion in the substantial middle position at recording materials 20, at this moment, owing to be the boundary with the 20a of bookbinding portion, the thickness difference of recording materials, so, the voltage that is added on the transfer platen 7 must be changed.
In the transfer printing toner transmit to the D of photographic fixing portion as the recording materials 20 of 5a, during by the D of photographic fixing portion, by heating and pressurizing with toner as the fusion photographic fixing.Toner is discharged by not shown line paper rolling wheel as the recording materials 20 of photographic fixing.On the other hand, be not transferred on the recording materials 20 and by discharge system 9 electric charge eliminated, then, clean, be recovered in the not shown discharge toner Cartridge by swabbing pig 10 attached to the remaining toner 5b on the photosensitive roller 6.
Below, control device 100 is described.Fig. 2 is the block diagram in the control device 100 of present embodiment, at length shows the controlling object of the B of transfer printing portion especially.Control device 100 is by with the memory storage of the control program etc. of CPU101 and storage CPU101 ROM103 and be to be formed centrally during RAM102 is as the needed storer of control program of carrying out CPU101 for example.
IO interface 104 plays CPU101 and for example intermediation of guidance panel 105 exchange messages, the signal of guidance panel 105 and lettering data etc. is passed to duplicate control part 106.Duplicate control part 106 control Charging system 1, exposure device 2 and developing apparatuss 3, on photosensitive roller 6, form image.Motor controling part 108 connects and control is used to drive photosensitive roller 6, delivery roller 15a, the motor 21 of 15b and the D of photographic fixing portion etc., the driving that makes photosensitive roller 6 constantly and the toner on the photosensitive roller 6 consistent etc. as the transmission moment of 5a and recording materials 20.
Transfer printing control part 107 is obtained the optimal transfer voltage corresponding with thickness according to the thickness of the recording materials 20 that detected by recording materials thickness detection apparatus 16, and transmits the signal of regulation to voltage-operated device 18.According to recording materials thickness testing result, respectively by making alive constantly operational part 110 and making alive temporal calculation portion 111 calculate transfer voltage be added to the moment and alive time on the transfer platen 7, and send signal to voltage-operated device 18.
Below, in this electric duplication device, on recording materials 20, carry out the control method of toner with reference to Fig. 1 and Fig. 3～Fig. 5 explanation as transfer printing.
When beginning to carry out transfer printing control, at moment T0, in order to make motor 21 entrys into service, by motor controling part 108 the motor-driven indicator signal taking place, carries out motor and rotate processing (step 201).
At moment T1, carry out paper feeding and begin to handle (step 202), to paper roller recording materials 20 are sent to delivery roller 15a by not shown, the position of 15b.
At moment T2, carry out paper feeding end process (step 203), after recording materials 20 adjustment neatly, make the driving of the toner image 5a on the photosensitive roller 6 constantly consistent with transmission constantly, carry out paper feeding and begin processing (step 204).In addition, begin to carry out recording materials thickness and detect to handle (step 204), be not at recording materials under the state of the position that recording materials thickness detects, the value of thickness is set at 0.
At moment T3, recording materials 20 read for example thickness d 1 (step 205) by the position that is provided with of thickness detection apparatus 16, send transfer printing control part 107 to after making this value through signal transformation portion 109.
At moment T4, begin to carry out the 1st optimal transfer voltage and handle (step 206).
In the 1st optimal transfer voltage of this step 206 is handled, for example select to take place the data of the optimal transfer voltage (V1) suitable the tables of data shown in Figure 5 in the ROM103 from being stored in memory storage in advance accordingly with recording materials thickness, send voltage-operated device 18 to by transfer printing control part 107 with this thickness data (d1).The relation of recording materials thickness and optimal transfer voltage (V1) as shown in Figure 6, during recording materials thickness thickening, best transfer voltage also increases.And, according to data shown in Figure 5, change the voltage control signal that takes place by voltage-operated device 18, the power supply 19 that the transfer voltage of the best is used from transfer printing is supplied with transfer platen 7.Behind mistiming t0, carry out, promptly carry out at moment T4 through this moment and the moment T3 of reading and recording material thickness.Mistiming t0 and recording materials 20 equate to the time that is sent to the B of transfer printing portion that transfer platen 7 contacts with photosensitive roller 6 from the position that is provided with of recording materials thickness detection apparatus 16.That is, when arriving between transfer platen 7 and the photosensitive roller 6, recording materials 20 add transfer voltage.In addition, when the rise of output voltage characteristic of the power supply of using when transfer printing 19 postpones, consider this characteristic,, also can set mistiming t0 short in order when reaching the lettering zone of recording materials 20, to export best transfer voltage.Photosensitive roller 6 is temporarily stopped, and voltage to be transferred makes photosensitive roller 6 rotate after reaching the value of appointment again.
At moment T5, begin to carry out the transfer process (step 207) of toner 5a, the power supply of using from transfer printing at this moment T5 19 is added to voltage on the transfer platen 7 by the output of the value of appointment at the latest.Like this, the toner on the photosensitive roller 6 just is transferred on the recording materials 20 that thickness is d1 as 5a.
Is the recording materials 20 of d1 on moment T6 in transfer process as 5a to thickness at the toner on the photosensitive roller 6, in the moment that the thickness of recording materials 20 changes, read for example thickness d 2 (step 208), send transfer printing control part 107 to after making this value through signal transformation portion 109.And calculating time t1 from moment T3 to T6 by making alive temporal calculation portion 110 is the time that the thickness of recording materials 20 does not change.
At moment T7, finish the 1st optimal transfer voltage and handle, begin to carry out the 2nd optimal transfer voltage and handle (step 209).To handle (step 206) the same with the 1st optimal transfer voltage, the data of the optimal transfer voltage (V2) suitable with this thickness data (d2) select to take place from be stored in the tables of data shown in Figure 5 in the ROM103 in advance accordingly with recording materials thickness, send transfer voltage control device 18 to from transfer printing control part 107, the transfer voltage of the best is added on the transfer platen 7 with power supply 19 from transfer printing.This moment T7 is exactly the moment behind the time t1 that does not change through the thickness of recording materials 20 from moment T4 that the 1st optimal transfer voltage takes place.
At moment T8, export certain value from transfer printing with the voltage that power supply 19 is added on the transfer platen 7 in this moment at the latest.Like this, the toner on the photosensitive roller 6 just is transferred on the recording materials 20 that thickness is d2 as 5a.
T9 is the moment of the terminal of recording materials 20 by thickness detection apparatus constantly.And the time t2 that the thickness d 2 of calculating the recording materials 20 from moment T6 to T9 by making alive temporal calculation portion 111 does not change (usually, t1=t2).
At moment T10, carry out paper feeding end process (step 210), finish thickness simultaneously and detect processing (step 210).
Constantly T11 carries out the finish time of toner as the transfer printing (step 211) of 5a from photosensitive roller 6 to recording materials 20, is the moment behind the moment T7 elapsed time t2.And, stop the output (step 212) of transfer voltage.In the transfer printing toner be transmitted to the D of photographic fixing portion as the recording materials 20 of 5a.
At moment T12, stop in order to make motor 21, transmit signal to motor controling part 108, finish the transfer printing control and treatment.
According to such transfer voltage control, the transfer voltage of the best corresponding with the recording materials thickness of measuring can be supplied with transfer platen 7, so, except the PPC that in common printer, uses with paper, even the material of book shape also can be guaranteed high transfer efficiency.
On the other hand for example in the structure of the 2nd embodiment of the electric duplication device that is used for bankbook, for example as the cash automatic processing device, because the same one side to recording materials 20 increases lettering, so, increase magnetic information read-write equipment 402 shown in Figure 7, magnetic information affirmation device 405, image read-out 400 and image information and confirm device 403.Image read-out 400 is arranged on the top of image recording face one side of recording materials, is made of the image that is used to shine on the recording materials light source 400a that uses and the image confirmation unit 400b that judges the image recording position.
At this moment action is as follows: read in information or writing information again on the magnetic stripe that writes on recording materials by magnetic information read-write equipment 402 by the not shown recording materials 20 of sending for paper roller along arrow f direction, confirm device 405 these information of affirmation by magnetic information, read the length that has write down by image read-out 400 then, confirm by image information affirmation device 403, and send these data to control device 100.
Judge whether to carry out lettering by control device 100 according to these two information, when lettering is carried out in judgement, just transmit lettering order and lettering data from control device 100.And the recording materials 20 that passed through image read-out 400 are sent to the position of the 2nd delivery roller to 15a, 15b by the 1st delivery roller to 401a, 401b, in this position standby.The moment that recording materials 20 transmit once more is that the toner on photosensitive roller 6 began to transmit as the position that should write down (position after the recording portion on the recording materials) of 5a and recording materials 20 moment identical with the photosensitive roller 6 tight B of transfer printing portion that contact with transfer platen 7.After this transfer voltage control action is identical with above-mentioned action.
Below, the 3rd embodiment of electric duplication device of the present invention is described with reference to Fig. 8.The present embodiment place different with the 1st embodiment is that the voltage control method in the control device 100 is different.Fig. 8 is the block diagram of the control device 100 of present embodiment.The part that increases in the control device 100 of present embodiment is that measuring transfer voltage is added on the transfer platen 7, measures the load current by transfer platen 7.The load current signal of measuring sends transfer printing control part 107 to by signal transformation portion 109.And, memory storage for example among the ROM103 except the tables of data corresponding with optimal transfer voltage shown in Figure 6, also storing the tables of data of the characteristic of the optimal transfer voltage corresponding with Fig. 9 and load current shown in Figure 10.
In addition, the family curve of the optimal transfer voltage corresponding with environment and load current shown in Figure 9 obtains the data shown in Figure 10 according to this property settings from experiment.
Below, with reference to transfer voltage control time figure and the flowchart text transfer voltage control method shown in Figure 12 of Figure 11.Here, the part that increases only is described in the transfer voltage control flow of the 1st embodiment.
From moment T0～T3, identical with the 1st embodiment.
At moment T4.1, for the measurement that increases the electrical specification that is used for survey record material 20 sends signal to voltage-operated device 18 (step 214) from transfer printing control part 107 with transfer voltage.In this moment, be the state before recording materials 20 arrive between transfer platen 7 and the photosensitive roller 6.
At moment T4.2, the measurement of specified size is added on the transfer platen 7 with transfer voltage, sensing lead electric current (step 215).To this constantly, recording materials 20 arrive between transfer platen 7 and the photosensitive roller 6, and are in the non-lettering zone of the leading section of recording materials 20.The load current of measuring is transformed to the signal of appointment by signal transformation portion 109, and sends transfer printing control part 107 to.
At moment T4.3, begin to carry out the 1st optimal transfer voltage and handle (step 206).In this step 206, from be stored in the tables of data shown in Figure 10 in the ROM103 in advance, select to take place the data of the optimal transfer voltage suitable accordingly with the characteristic signals of the load current of measuring, send voltage-operated device 18 to from transfer printing control part 107 with this characteristic signals.And, changing the transfer voltage control signal that takes place by voltage-operated device 18 according to these data, the power supply 19 that the transfer voltage of the best is used from transfer printing is added on the transfer platen 7.
T5, T6 are identical with the 1st embodiment constantly.
At moment T7, finish the 1st optimal transfer voltage and handle (step 206), begin to carry out the 2nd optimal transfer voltage and handle (step 209).Here, ask the 2nd optimal transfer voltage, and be added on the transfer platen 7 according to the recording materials thickness d 1 that detects, thickness proportion and the 1st optimal transfer voltage value of d2 from the power supply 19 that transfer printing is used.State behind this time t1 that is exactly constantly not change through the thickness of recording materials 20 from moment T4.3 that the 1st optimal transfer voltage takes place.
Figure 13 is the performance plot of optimal transfer voltage corresponding with recording materials thickness under dried environment.Even identical recording materials thickness, because environmental change, the optimal transfer voltage value is also different, no matter the transfer voltage variable quantity corresponding with the recording materials amounts of thickness variation all is certain under which type of environment.Therefore, can obtain the 2nd optimal transfer voltage according to the recording materials thickness d 1 that detects, thickness proportion and the 1st optimal transfer voltage value of d2.
After the T8, identical constantly with the 1st embodiment.
According to above-mentioned transfer voltage control method, owing to the transfer voltage of the best corresponding with the electrical specification of recording materials thickness of measuring and recording materials can be supplied with transfer platen, so, not influenced by environmental change and on the recording materials of book shape, carry out transfer printing with high transfer efficiency.
Like this, owing to can the voltage of the best be supplied with transfer platen, so the PPC that uses except printer is with the paper, even the material of book shapes such as account book also can be guaranteed high transfer efficiency according to recording materials thickness.In addition, owing to the voltage that changes that will conform is added on the transfer platen, so, can provide to have electric duplication device not affected by environment, as can to guarantee the transfer device of high transfer efficiency.
Figure 14 is the transfer interpreter composition of the 4th embodiment of electric duplication device of the present invention.By the 1st guide is that paper pallet 55 and the 2nd guide are that to form recording materials be the transmission route that book 20 transmits in the drawings from right to left for paper guide 56 and paper guide 17.Transmit in the route at this,, be provided with to transmit and roll 15c, 15d, 15b, 15a as conveyer.
Wherein, delivery roller 15c, 15a are for corresponding with the variation of the thickness of waiting until card paper from the book of having bound a large amount of paper, support by elastomeric elements such as spring 53,54 respectively, elastomeric element 53,54 is supported by drive sources such as spiral winding 51,52, the acting force of delivery roller 15c, 15a control extruding book 20.
In the present embodiment, these delivery rollers 15c, 15d, 15b, 15a and transfer platen 7 are driving rollss.If the thin thickness of book 20 can not have drive source 51,52 yet.In addition, also can make delivery roller 15c, 15a is return idler.In addition, delivery roller 15c makes that to utilize electrical affinity etc. be that toner on the book 20 looks like to become the photographic fixing roller that permanent image is used attached to recording materials.Therefore, this photographic fixing roller 15c has thermal source and temperature sensor etc. in inside.
Thickness detecting sensor 16a, 16b detect the thickness of the book 20 that enters lettering portion.The thickness data that detects according to this sensor 16a, 16b calculate with transfer platen 7 to the power of photosensitive roller 6 extruding, be added on the transfer platen 7 from the voltage of variable high-voltage power supply 19 and apply moment etc. of above-mentioned extruding force and this voltage.Here, though omit explanation to photographic fixing portion,, the toner picture that is transferred on book 20 recording materials such as grade becomes permanent picture by means of heat and pressure.In addition, variable high-voltage power supply 19 also is connected with ground 5.
Transfer platen 7 is by conducting rubber and metal-coredly constitute, and adds high voltage by variable high-voltage power supply 19.In addition, utilize spring 8 and spiral winding 50 etc. can control transfer platen 7 and be added to power on the photosensitive roller 6.
With photosensitive roller 6 Charging system 1, exposure device 2 and developing apparatus 3 etc. are set closely, toner 4 moves on on the photosensitive roller 6 from developing apparatus 3 under electrostatic forcing, forms the toner picture.Delivery roller 15d and transfer platen 7, delivery roller 15b lack than the length of the state lower edge direction of transfer that closes at book 20 respectively at least with the interval of transfer platen 7.
Below, the action of control device of the electric duplication device of the 4th embodiment of the present invention is described with reference to Figure 15～Figure 19.
As shown in figure 15, book 20 is transmitted along direction X by delivery roller 15b, 15a on paper pallet 55, and sensor 16a detects book 20.Book 20 stop at surround transfer printing portion promptly at this moment photosensitive roller 6 and the appointed positions of transfer platen 7.At this moment, the insertion of 7 pairs of books 20 of transfer platen constitutes resistance, for the surface page or leaf that makes book 20 waits buckling and fold does not take place, and weakening by drive source is that spiral winding 50 is added to the acting force on the transfer platen 7.
As shown in figure 16, photosensitive roller 6 in rotational direction B rotates, and is made the charged processing of photosensitive roller 6, is carried out the processing that electrostatic latent image forms processing and carried out forming the toner picture by developing apparatus 3 on photosensitive roller 6 by exposure device 2 by Charging system 1.Book 20 mobile speed in left side (directions X of Figure 15) in figure is consistent with the speed that photosensitive roller 6 rotates along the B direction.
Secondly, as shown in figure 17, when book 20 is sent to when contact with photosensitive roller 6 along directions X, just will be added on the transfer platen 7 from variable high-voltage power supply 19 according to voltage by the thickness information calculating of thickness detecting sensor 16a detection.In addition, be added on the book 20, make spring 8 grades that best deflection take place and the pressure of appointment is added on the book 20 from transfer platen 7 by spiral winding 50 in order to make the best transfer pressure of calculating according to thickness information.
Utilizing drive source such as spiral winding to change transfer platen is that the reason of extruding force is with recording materials such as books to the power of photosensitive roller extruding, as shown in figure 20, on the transfer platen that is made of foam conductive rubber such as EPDM and silicon etc., its reacting force is with deflection t 1, t 2, t 3Increase by 2 curves Deng deviated line.Therefore, because recording materials such as book are compared with card paper, thickness is more than tens of times, so the extruding force that is added on the book at least also is more than tens of times.
In addition, as shown in figure 21, the pressure when between recording materials such as photosensitive roller and book reaches about 200g/cm 2When above, the obstacle of hollow will be commonly referred to.For example, if the contact area when making transfer printing is 2.17mm 2, the hollow phenomenon will take place when the power between photosensitive roller and transfer platen surpasses 434g.
This obstacle that is called hollow, the a part of toner that refers in the toner picture that forms on photosensitive roller is not transferred on the recording materials such as book, so, on recording materials, should exist the part of toner not have toner and directly expose the recording materials surface, particularly not have the situation of toner in the inside generation in zone arbitrarily.
When transfer platen being fixed, making transfer platen the distortion of thickness size of paper only takes place, under the card paper thickness of (thickness is about 0.1mm), the transfer pressure of following the reacting force of distortion of the rubber section of transfer platen to produce is than the little pressure P of transfer pressure that hollow takes place 1But under the thickness of card paper more than the 0.2mm and book etc., transfer pressure will produce P 2And P 3Transfer pressure.Therefore, because the hollow phenomenon takes place, so, must control transfer pressure.
As shown in figure 18, when also need near the bookbinding portion at book 20 the transfer printing toner as the time, transfer platen 7 must the big power of extruding force with than above-mentioned transfer printing the time be pushed.At this moment,, expand partly easily owing between near the page the bookbinding portion of book 20, form air layer etc., so, in order to suppress this expansion, must push with the pressure bigger than common best extruding force.But, when near the expansion the bookbinding portion that can remove book 20 before the transfer printing portion that is entering by photosensitive roller 6 and transfer platen 7 encirclements, just needn't change above-mentioned extruding force.
As shown in figure 19, after book 20 is discharged from transfer printing portion by delivery roller 15c, 15d, toner picture on the photosensitive roller 6 is promptly come to an end to the action of recording materials such as book 20 transfer printings, by delivery roller 15c and driving rolls 15d heat and pressure are added on the above-mentioned book 20, make the toner on the book 20 look like to become permanent picture.
In the electric duplication device of Figure 14～shown in Figure 19, omitted control device.Because this is well-known technology, so explanation is omitted.
Below, the book printer of other embodiment of the present invention is described with reference to Figure 22.
As shown in the figure, book printer 200 is at least by inserting mouth 301, delivery roller 302,303,306,307,322,324,326, transmit route 360, magnetic information reading part 304, magnetic information identification part 330, image reading unit 305, image information identification part 331, drive motor 308, photosensitive roller 311, charged device 315, exposer 314, laser instrument or LED313, developer 312, transmit photographic fixing roller 325,327, transfer platen 317, spring 319, drive source 318, paper guide 309,332, data-interface 334, operational part 335, control part 336 and sensor 301,310,321 formations such as grade.
Pass through sensor 301 from inserting mouthful 301 books 333 that insert along the A direction, read information or writing information in the magnetic stripe that writes book 333 by magnetic information reading part 304, by magnetic information identification part 330 identifying informations, then, read have several pages or on the surface page or leaf by image information reading part 305 to lettering information such as which capable letterings, by image information identification part 331 recognition image information.
Judge whether to answer lettering by operational part 335 according to above-mentioned 2 information,, just transmit lettering orders and lettering data etc. from control part 336 when concluding when carrying out lettering.In addition, detect the thickness of books 333, and should detect data and send interface portion 334 to by sensor 310.In operational part 335, detect the extruding force and the initial deformation amount that the needed spring 319 of this extruding force takes place of the transfer platen 317 of data computation the best according to this, calculate the amount of movement of drive source 318 etc. according to result of calculation, and transmit data such as the above-mentioned extruding force and the moment to control part 336.In addition, by thickness information calculating optimum voltage and the alive moment of operational part 335 according to recording materials such as books, and by the variable high-voltage power supply 320 of control part 336 controls.
Above-mentioned lettering data also have situation about sending by communication from other computing machines etc.In addition, when concluding that by operational part 335 book 333 needs the such form lettering of the predetermined frame of printing, hurdle and necessary literal and numeral, the information that adds up in form lettering information and the writing format by operational part 335.Sometimes this form lettering information is stored in advance in ROM etc.
In addition, the lettering data are carried out font by operational part 335 and are launched, by forming the toner picture on laser instrument or LED313 and developer 312 photosensitive roller 311 charged utilizing Charging system 315.This toner picture utilization is transferred on the book 333 by the electric field that variable high-voltage power supply 320 is added between photosensitive roller 311 and the transfer platen 317.
In the present embodiment, as fuser, has the photographic fixing of transmission roller 325,327, have drive source 323,329 and spring 324,328 respectively, carry out photographic fixing with this, still, at this moment, operational part 335 is judged the photographic fixing pressure that is added on the book 333 according to information such as the information of thickness detecting sensor 310 and transfer rates, and controlling and driving source 323,329 is added to the transfer pressure of the best on the above-mentioned book 333.
In addition, though do not indicate among Figure 22,, photosensitive roller 311, LED313, developer 312, charged device 315 and swabbing pig 316 etc. are driven up and down, book 333 can be moved along Y direction or this both direction of Z direction in transmitting route 360.Behind above-mentioned book 333 letterings,, book 333 is moved to the assigned address of image information reading part 305 in order to judge the lettering concentration of lettering data.
After making the information that obtains by image information reading part 305 pass through image information identification part 331 and interface portion 334, judge by operational part 335 whether the lettering data satisfy the lettering concentration value of appointment.In addition, though the discontented fixed lettering concentration value of toe, even reach the 2nd lettering concentration value that can not become problem in the use but concentration is lower than the lettering concentration value of appointment when above, just by control part request maintenance signals such as on-call maintenance conveyed to the operator from the computing machine of outside or the operating portion (not shown) of book printer from operational part.
Book 333 shown in Figure 23 is to utilize book printer shown in Figure 22 300 to carry out the book of form lettering.So-called form lettering, for example shown in Figure 23 exactly on the book that is the blank sheet of paper state, columns 337 (form) such as date of printing, number of the account, amount of money A, amount of money B, remaining sum.But, be the boundary with bookbinding portion 338, the thickness of book 333 is different and different with number of pages, and in addition, near bookbinding portion 338, book also expands easily.Therefore, the extruding force during by the control photographic fixing just can make the toner picture not carry out photographic fixing on book with not deforming.
The electric duplication device that illustrates in above-mentioned the 1st～the 4th embodiment as shown in the figure, utilizes exposure device 2 to form electrostatic latent image on photosensitive roller 6, and still, also duplicating machine is such as everyone knows, forms sub-image by scan manuscript on photosensitive roller 6.Like this, just can be to notebook etc. with document copying for example, thereby just can be etc. in the library with document copying to the notebook of oneself.In addition, in the electric duplication device of Figure 14～shown in Figure 19, utilize delivery roller 15c, 15d that book 20 is for example transmitted along the arrow directions X among Figure 18, but, also can make the control device action utilizing after photosensitive roller 6 and transfer platen 7 duplicate, so that delivery roller 15c, 15d, transfer platen 7, delivery roller 15a, the 15d counter-rotation, thus book 20 is returned to the slotting inlet side of electric duplication device.So just, can reduce the component number of electric duplication device, in addition, get on very well,, can realize high efficiency electric duplication device by book 20 is promptly returned on hand for the user.
In addition, in an embodiment,, used photosensitive roller in order to form sub-image, still, as long as can expose, no matter what shape can.For example, also can be banded.

Claims (7)

1. electric duplication device, it is characterized in that having: on the image carriers such as photosensitive roller that rotate, form the toner of toner picture as implementing device, transmit the conveyer of the recording materials such as book of the above-mentioned toner picture of transfer printing, detect the thickness detection apparatus of thickness of the recording materials of above-mentioned transmission, toner on the above-mentioned image carrier is looked like to be transferred to transfer device on the above-mentioned recording materials that send, the arithmetic unit that the moment that contacts with above-mentioned transfer device according to the above-mentioned recording materials of transfer rate property calculation of the position of above-mentioned thickness detection apparatus and above-mentioned recording materials and above-mentioned image carrier and above-mentioned transfer device are added to the pressure characteristic on the above-mentioned recording materials, and control above-mentioned transfer device with the extruding force control device of above-mentioned recording materials to the extruding force of above-mentioned image carrier extruding according to the calculated value of the above-mentioned moment and pressure characteristic, and have and produce the transfer voltage generation device be applied to the transfer voltage between above-mentioned transfer device and the above-mentioned image carrier, detect the transfer printing current sensing means of the electric current that in above-mentioned recording materials, passes through by the voltage that produces by above-mentioned transfer voltage generation device, and control the transfer voltage control device of above-mentioned transfer voltage according to the current value that in above-mentioned recording materials, passes through, have the fixing device that the toner that will be transferred on the above-mentioned recording materials looks like to carry out photographic fixing in addition.
2. by the described electric duplication device of claim 1, it is characterized in that: above-mentioned fixing device has stressed pressure applying means of the recording materials that carry out photographic fixing and detection and controls the pressure control device of above-mentioned pressure.
3. by the described electric duplication device of claim 2, it is characterized in that: above-mentioned recording materials are that thickness is above card paper or multi-ply paper of 0.2mm.
4. by the described electric duplication device of claim 3, it is characterized in that: can on thickness is the above-mentioned recording materials of card paper more than the 0.2mm or multi-ply paper, print.
5. by the described electric duplication device of claim 1, it is characterized in that: above-mentioned toner can forward and reversely rotate respectively as implementing device, above-mentioned conveyer and above-mentioned transfer device, above-mentioned recording materials can be returned to insert a side.
6. by the described electric duplication device of claim 5, it is characterized in that: above-mentioned toner has as implementing device and above-mentioned transfer device and scans being copied thing, and forms the scanister of toner picture on as implementing device at above-mentioned toner.
7. the control method of an electric duplication device is characterized in that the following step: thus make the charged surface of image carrier form electrostatic latent image at image carrier, and toner is attached to form the toner picture on this electrostatic latent image; Voltage is added to is used for toner is looked like to be transferred to transfer means on the recording materials that send, and control this voltage; To measure with voltage and be added to sensing lead electric current on the above-mentioned transfer means; Ask the 1st optimum voltage according to this load current, and the 1st optimum voltage is directly proportional with the thickness of above-mentioned recording materials, calculate the 2nd optimum voltage, apply the moment of the 2nd optimum voltage and apply time of the 2nd optimum voltage, and above-mentioned transfer means is to the extruding force of above-mentioned recording materials; And control above-mentioned transfer means according to this result of calculation.
CNB961054573A 1995-04-24 1996-04-24 Electric duplication device and control method thereof Expired - Fee Related CN1153098C (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP09816395A JP3357969B2 (en) 1995-04-24 1995-04-24 Electrophotographic apparatus and control device
JP098163/95 1995-04-24
JP098163/1995 1995-04-24
JP7185822A JPH0934281A (en) 1995-07-21 1995-07-21 Electrophotographic device
JP185822/1995 1995-07-21
JP185822/95 1995-07-21

Publications (2)

Publication Number Publication Date
CN1139768A CN1139768A (en) 1997-01-08
CN1153098C true CN1153098C (en) 2004-06-09

Family

ID=26439364

Family Applications (1)

Application Number Title Priority Date Filing Date
CNB961054573A Expired - Fee Related CN1153098C (en) 1995-04-24 1996-04-24 Electric duplication device and control method thereof

Country Status (3)

Country Link
KR (1) KR0183208B1 (en)
CN (1) CN1153098C (en)
TW (1) TW306985B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4454222B2 (en) * 2002-12-06 2010-04-21 シャープ株式会社 Paper transport device and paper transport method
JP3833181B2 (en) * 2003-02-25 2006-10-11 キヤノン株式会社 Transfer device
JP4464068B2 (en) * 2003-04-24 2010-05-19 キヤノン株式会社 Image forming apparatus
JP2016136241A (en) * 2015-01-20 2016-07-28 株式会社リコー Pressure device, image forming apparatus, and control method of pressure device

Also Published As

Publication number Publication date
KR960038525A (en) 1996-11-21
CN1139768A (en) 1997-01-08
TW306985B (en) 1997-06-01
KR0183208B1 (en) 1999-04-15

Similar Documents

Publication Publication Date Title
US5930577A (en) Registering images on the front and on the back of a substrate using high resolution sheet measurement
CN101957571B (en) Image forming device
JP3892411B2 (en) Image forming apparatus
US6608985B2 (en) Image-forming apparatus and method for image recording on two sides of a medium using a positioning mark
CN104917928A (en) Image reading device, and image forming apparatus
US7400338B2 (en) Image forming apparatus with temperature detection
CN101334620B (en) Image forming device
CN1153098C (en) Electric duplication device and control method thereof
US7619788B2 (en) Document feeding and reading unit and image forming apparatus
US8073373B2 (en) Image forming apparatus with device for reducing stagnant toner between fixing roller and cleaning web
JP4772724B2 (en) Image forming apparatus
US8620169B2 (en) Image forming apparatus
CN101105682B (en) Image forming apparatus
CN101008816A (en) Image forming apparatus
US20190204773A1 (en) Image reading device and image forming apparatus including the same
EP1950618A2 (en) Image forming apparatus and image forming method using the same for duplex printing
US7580664B2 (en) System and method for positioning one or more stripper fingers (in a fusing system) relative to an image
JP3357969B2 (en) Electrophotographic apparatus and control device
JP4084545B2 (en) Image forming apparatus
EP0466172B1 (en) Sheet feed for an image forming apparatus
EP0692749B1 (en) Electrophotographic printing apparatus
JP3980412B2 (en) Image forming apparatus
JP2006267189A (en) Image forming apparatus
JP2005070198A (en) Image forming apparatus
JP2006072224A (en) Image forming apparatus

Legal Events

Date Code Title Description
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C06 Publication
PB01 Publication
C14 Grant of patent or utility model
GR01 Patent grant
ASS Succession or assignment of patent right

Owner name: HITACHI OMRON FINANCIAL SYSTEMS LTD.

Free format text: FORMER OWNER: HITACHI CO., LTD.

Effective date: 20060512

C41 Transfer of patent application or patent right or utility model
TR01 Transfer of patent right

Effective date of registration: 20060512

Address after: Tokyo, Japan

Patentee after: Hitachi Omron Financial System Co., Ltd.

Address before: Tokyo, Japan

Patentee before: Hitachi Ltd.

C19 Lapse of patent right due to non-payment of the annual fee
CF01 Termination of patent right due to non-payment of annual fee