CN1251810A - Method for controlling reciprocal device - Google Patents

Method for controlling reciprocal device Download PDF

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Publication number
CN1251810A
CN1251810A CN99117525A CN99117525A CN1251810A CN 1251810 A CN1251810 A CN 1251810A CN 99117525 A CN99117525 A CN 99117525A CN 99117525 A CN99117525 A CN 99117525A CN 1251810 A CN1251810 A CN 1251810A
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CN
China
Prior art keywords
reciprocating apparatus
area
damper
brake force
control
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.)
Granted
Application number
CN99117525A
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Chinese (zh)
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CN1153677C (en
Inventor
阿部明宏
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Fujifilm Business Innovation Corp
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Fujitsu Ltd
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Publication of CN1251810A publication Critical patent/CN1251810A/en
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Publication of CN1153677C publication Critical patent/CN1153677C/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
    • B41J29/38—Drives, motors, controls or automatic cut-off devices for the entire printing mechanism
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J19/00—Character- or line-spacing mechanisms
    • B41J19/04—Sound-deadening or shock-absorbing devices or measures therein
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J19/00—Character- or line-spacing mechanisms
    • B41J19/18—Character-spacing or back-spacing mechanisms; Carriage return or release devices therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/135—Nozzles
    • B41J2/145—Arrangement thereof
    • B41J2/155—Arrangement thereof for line printing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/485—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by the process of building-up characters or image elements applicable to two or more kinds of printing or marking processes
    • B41J2/505—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by the process of building-up characters or image elements applicable to two or more kinds of printing or marking processes from an assembly of identical printing elements
    • B41J2/515—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by the process of building-up characters or image elements applicable to two or more kinds of printing or marking processes from an assembly of identical printing elements line printer type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J25/00—Actions or mechanisms not otherwise provided for
    • B41J25/001—Mechanisms for bodily moving print heads or carriages parallel to the paper surface
    • B41J25/006—Mechanisms for bodily moving print heads or carriages parallel to the paper surface for oscillating, e.g. page-width print heads provided with counter-balancing means or shock absorbers

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  • Character Spaces And Line Spaces In Printers (AREA)

Abstract

The present invention has an object to prevent the collision between the shuttle and the damper and/or harmful influence caused by the collision in the dot line printer. The control method of the present invention measures the actual speed of the shuttle and changes the braking force to be applied to the shuttle, preventing the collision against the damper.

Description

Method for controlling reciprocal device
The present invention relates generally to the control method that is used for removable unit, and relate to particularly be used to prevent by between a removable unit and the end contact produced impacts, reach the method for eliminating subsequently by the adverse effect that impacts generation, removable unit contacts this end so that because contact changes its moving direction.The present invention is suitable for reciprocating type point-and-raw type printer.As used herein " reciprocating type point-and-raw type printer " means that usually printer laterally repeats to have the reciprocating apparatus of a rectangular printhead (being called " back and forth " with this action here), and printhead connects delegation's ground printing at the printing paper lastrow, and prints action at vertical pitch of feed mobile print paper with a predetermined paper to carry out the next one subsequently.
The paper feeding spacing of the mobile and printing paper that point-and-raw type printer control is reciprocal is synchronously to keep correct printing.
For example, the paper feeding spacing is set as A=25.4mm/6 (1/6 inch), and for example, reciprocating apparatus moves and use printhead prints from left to right at printable area.For finishing the printing of target line, when printing paper is reversed control with above-mentioned paper feeding spacing reciprocating apparatus when vertically being transmitted.Then, reciprocating apparatus moves from right to left to print next line on printing paper.In this way, reciprocating apparatus is constantly carried out and is comprised and move and print on static dump paper and reverse action when printing paper is fed.
On the other hand, the paper feeding spacing is set as under the situation that 2A (1/3 inch) or paper crossed, and reciprocating apparatus gets out of the way in the outside of printable area one end (left side or right) and waits for next print command.In this case, reciprocating apparatus has a standby operation between horizontal shift action and counteragent.
According to traditional control, commutating coil utilizes a brake force braking reciprocating apparatus so that reciprocating apparatus contacts by impacting with terminal of permission after printing during standby operation.Yet, because in fact the setting of brake force does not consider that the environment for use of printer, inventor have been found that because the change of environmental condition comprises that the change of temperature makes the brake force that acts on reciprocating apparatus not enough sometimes.Reciprocating apparatus impacts endways continually, damages reciprocating apparatus and printhead sometimes.In addition, collision may cause the vibration of whole reciprocator, and/or the reciprocating apparatus of commutation may have a vibration velocity, and undesirable skew time-write interval and position reduce print quality, and other mechanism that is connected on the reciprocating apparatus is out of order.
Therefore, general purpose of the present invention provides a kind of new and useful control method that is used for removable unit, and wherein above-mentioned shortcoming is eliminated.
More specifically, another object of the present invention provides a kind of method that is used to control removable unit to keep impacting being lower than predetermined value when removable unit and a terminal collision.
As this method substitute or with the combining of this method, another object of the present invention provides and a kind ofly is used to control the method for removable unit drives so that eliminate adverse effect when removable unit and terminal collision.
In order to achieve the above object, the step that method for controlling reciprocal device of the present invention comprises is: answer mobile reciprocating apparatus with a constant speed in the first area of a pair of damper with a first area and a second area interval, in second area, brake force is acted on reciprocating apparatus, measurement is applied the speed of the reciprocating apparatus of brake force, regulate the time cycle of brake force effect according to the speed of in measuring process, measuring, press a damper at second area with reciprocating apparatus, and in second area, make the reciprocating apparatus commutation.
In addition, according to the speed of measuring at measuring process, regulating step can be regulated the time cycle step and replace with of pushing step.
After the speed of the reciprocating apparatus that measuring process is measured was zero, regulating step can be by a step replacement that begins to push step.
Measuring process can be replaced by the step of measuring near the temperature the reciprocating apparatus just be applied brake force, and regulating step can be replaced by a step of regulating the time cycle of brake force effect according to the temperature of measuring at measuring process.
Measuring process can be replaced by the step of the electric current of a measurement in braking equipment, and regulating step can be replaced by the step of the time cycle of regulating the brake force action step according to the electric current of measuring at measuring process.
Whether measuring process can be by detecting reciprocating apparatus and replaces with the step whether damper collides according to impacting greater than predetermined impacting, and regulating step can be by the step replacement of the time cycle of regulating the pushing step according to the testing result that detects step.
Measuring process can be by detecting reciprocating apparatus and replace with the step whether damper collides according to impacting greater than predetermined impacting, and regulating step can be by a step replacement of the zero-time that changes the pushing step according to the testing result that detects step.
The step that a kind of control method of the present invention comprises is: move back and forth a reciprocating apparatus with a constant speed in first zone of first and second dampers with first area and second area interval, in the 3rd zone, move back and forth a balancer with a constant speed with third and fourth damper between the 3rd zone and the 4th area region, brake force of effect is to reciprocating apparatus in second area, in the 4th zone, a brake force is acted on the balancer, push in first and second dampers one with reciprocating apparatus at second area, the 4th zone pushing balancer in third and fourth damper, generation is about the first information of the collision between reciprocating apparatus and first and second damper, generation is about second information of the collision between balancer and the 3rd and the 4th damper, according to first and second information control reciprocating apparatuses, according to first and second information control balancers, in second area, make the reciprocating apparatus commutation, and in the 4th zone, make the balancer commutation.
The step that comprises according to the control method of a removable unit of the present invention is: Xiang Yiduan moves removable unit with constant speed, brake force is acted on the removable unit that moves with constant speed, measure brake force, with driving force act on removable unit stop with effect that the back pressing with removable unit in brake force should end, and control brake force so as according to the removable unit of measuring of brake force with the predetermined contact end that impacts.
In addition, measuring and control step can be replaced by the step that is determined at the contact between removable unit and the end, and measures the control driving force to eliminate the vibration that is caused by colliding according to the collision of measuring process.
A kind of printer of the present invention comprises a pair of damper that has between first and second area region, reciprocating apparatus movably between this is to damper, be contained in a printhead on the reciprocating apparatus, a linear motor of mobile reciprocating apparatus, and the control module of a control linear motor, wherein control module control linear motor is so that move back and forth reciprocating apparatus with a constant speed in the first area, so that brake force is acted on reciprocating apparatus at second area, the speed of the reciprocating apparatus that will be applied according to brake force is regulated the time of brake force effect, press a damper at second area with reciprocating apparatus, make the reciprocating apparatus commutation at second area.
According to method for controlling reciprocal device of the present invention, brake force or pushing time are regulated by the actual speed of reciprocating apparatus.For example, the pushing time is set to a preset time period, and here the speed of the reciprocating apparatus of Ce Lianging and is provided with cycle time expand of a Preset Time in predetermined scope, and speed is outside predetermined scope there.
In addition, the pushing step starts after the speed vanishing of reciprocating apparatus.The pushing step pushes reciprocating apparatus repeatedly by driving repeatedly and stopping pusher, and the initial driving connection cycle of pusher is set to be longer than any connection cycle afterwards.
Near the temperature actual speed that replaces reciprocating apparatus, reciprocating apparatus or the electric current in braking equipment is measured and measurement result can be used.When reciprocating apparatus and damper collision, the time started that the pushing time could be extended or push step can be delayed.
Control method of the present invention can be utilized the common information about reciprocating apparatus and balancer collision.
The invention is not restricted to the reciprocating apparatus of line line printer, and be widely used in the control method of a removable unit.Even in this case, the brake force of effect directly or measured indirectly confirming its effect, and brake force is conditioned to prevent the collision of removable unit subsequently.In addition, the pushing driving force is controlled to eliminate subsequently the adverse effect that is caused by collision.
The present invention can be implemented on the printer with control element of carrying out above-mentioned any control method.
Other purpose of the present invention and characteristics will become very clear from following explanation and accompanying drawing.
Shown in Figure 1 is the perspective view of using the major part of a kind of point-and-raw type printer of the present invention.
Fig. 2 shows the exemplary view that is used to illustrate in the first and second reciprocating apparatus mechanisms of the point-and-raw type printer shown in Fig. 1.
Shown in Figure 3 is the view that is used to illustrate in the action of the point-and-raw type printer shown in Fig. 1, and it is the plane of the reciprocating apparatus of explanation point-and-raw type printer with respect to the reciprocating path of printing paper.
Shown in Figure 4 is the plane that is used for the slit plate of point-and-raw type printer shown in Figure 1.
Shown in Figure 5 is the view that is used to illustrate the additional example of slit plate shown in Figure 4.
Shown in Figure 6 is the block diagram of the control system of point-and-raw type printer 100 shown in Figure 1.
Shown in Figure 7 is the flow chart that is used to illustrate the predetermined process of control method of the present invention.
Shown in Figure 8 is sequential chart with another control method of comparing according to of the present invention first control method of implementing.
Shown in Figure 9 is the sequential chart that is used to illustrate control method according to the first and second aspects of the present invention.
Shown in Figure 10 is the flow chart that is used to illustrate according to the control method of the first embodiment of the present invention.
Shown in Figure 11 is the flow chart that is used to illustrate control method according to a second embodiment of the present invention.
Shown in Figure 12 is the flow chart that is used to illustrate the control method principle of a third embodiment in accordance with the invention.
Shown in Figure 13 is the flow chart that is used to illustrate the control method of a third embodiment in accordance with the invention.
Shown in Figure 14 is the sequential chart of this four signals constantly that will detect when reciprocating apparatus speed is zero in control method shown in Figure 9.
Shown in Figure 15 is the digital circuit figure that is used to produce two signals shown in Figure 10.
Shown in Figure 16 is to be used to illustrate the block diagram of use according to a control circuit example of fourth embodiment of the invention control method.
Shown in Figure 17 is the block diagram of a timer in control circuit shown in Figure 16.
Shown in Figure 180 is an exemplary curves of temperature-resistance relation in hygrosensor shown in Figure 16 82.
Shown in Figure 19 is the flow chart that is used to illustrate according to the first aspect of the control method of fourth embodiment of the invention.
Shown in Figure 20 is the flow chart that is used to illustrate according to the second aspect of the control method of fourth embodiment of the invention.
Shown in Figure 21 is a curve map at the commutating coil 124 temperature-current relationship that is used for control circuit shown in Figure 16 70.
Shown in Figure 22 is a collision detecting system that can be used for according to the control method of fifth embodiment of the invention.
Shown in Figure 23 is the sequential chart that is used to illustrate according to the first aspect of the control method of fifth embodiment of the invention.
Shown in Figure 24 is the flow chart that is used to illustrate according to the first aspect of the control method of fifth embodiment of the invention.
Shown in Figure 25 is the sequential chart that is used to illustrate according to the second aspect of the control method of fifth embodiment of the invention.
Shown in Figure 26 is the flow chart that is used to illustrate according to the second aspect of the control method of fifth embodiment of the invention.
Shown in Figure 27 is a circuit diagram that can be used for according to sixth embodiment of the invention.
Referring now to accompanying drawing, an explanation will be provided by most preferred embodiment of the present invention.At first, can use point-and-raw type printer 100 to be described with reference to Fig. 1 to 6 according to control method of the present invention.Components identical is represented and corresponding elements is represented by identical reference number and letter character by identical parameters number in each figure, and the explanation of repetition is omitted thus.
Shown in Figure 1 is perspective view as point-and-raw type printer 100 basic elements of character of the applicable example of control method of the present invention.Shown in Figure 2 is the exemplary view that is used for illustrating in point-and-raw type printer 100 first and second reciprocating apparatus mechanisms 100 and 150.Shown in Figure 3 is the plane that is used for illustrating in the action of point-and-raw type printer reciprocating apparatus 114 shown in Figure 1, and draws with respect to printing paper P.Shown in Figure 4 is the plane that can be used for the slit plate of point-and-raw type printer 100.Fig. 5 is an additional example figure who is used to illustrate slit plate shown in Figure 4.Fig. 6 is the block diagram of the control system of point-and-raw type printer 100.
As Fig. 1, shown in 5 and 6, point-and-raw type printer 100 has framework 101, control module 102, paper advance mechanism 104, a pair of optical pickocff 106A and 106B, first reciprocator 110, and second reciprocator 150.
Be connected to each element and the main frame 10 of point-and-raw type printer 100, such as control module 102 control first reciprocator 110 and/or second reciprocators 150 of host computer.Control module 102 can be installed on the motherboard of printer 100.
In the system of reality, control method of the present invention can represent with software or firmware, and be stored in the memory (not shown) of memory (not shown) being connected to control module 102 and/or main frame 10 and print driver together.Alternatively, control module 102 can be omitted and direct each element of control point line printer of main frame 10.
Paper advance mechanism 104 is at vertical (vertical with the moving direction of balancer 154 with the following reciprocating apparatus that will narrate 114) feeding printing paper P shown in Figure 3.Because the known any paper advance mechanism of prior art can be used for point-and-raw type printer 100 of the present invention, being described in detail of the structure of paper advance mechanism 104 and function will be omitted.
Be fixed on optical pickocff 106A on Fig. 5 institute abridged point-and- raw type printer 100 and 106B and can receive information respectively by the slit plate 162 of the slit plate 140 of first reciprocator 110 and second reciprocator 150, and as a signal of telecommunication transmission information to control module 102.Each optical pickocff can use any known structure, resembles photocell and light receiving element.
First reciprocator 110 has the reciprocating apparatus 114 that has printhead 112 on it, and at horizontal mobile reciprocating apparatus 114 so that print printing paper as shown in Figure 3.Second reciprocating apparatus 150 is mechanisms as the balancer (counterweight) that oppositely moves with respect to first reciprocator 110.
First reciprocator 110 comprises printhead 112, has the reciprocating apparatus 114 of printhead 112 on it, and drives the linear motor 116 of reciprocating apparatus 114.Will describe as reference Fig. 2, first reciprocator 110 further comprises the damper 128 and 130 as the buffer component that is used to clash in the both sides of reciprocating apparatus 114.As shown in Fig. 4 to 6, slit plate 140 is loaded on the reciprocating apparatus 114.As shown in Figure 27, first reciprocator 110 has first control module 111, and first control module 111 is communicated by letter with controller 102 so that be controlled at each element in first reciprocator 110.
First reciprocator is connected to control module 102 via linear motor 116.Instruction according to control module 102, first reciprocator moves reciprocating apparatus 114 (constant speed control) with the constant speed district CA that is described with a constant speed at reference Fig. 3, and at the commutating zone RL of both sides, constant speed district and the moving direction (commutation control) of RR change reciprocator 114.
Printhead 112 has an electromagnetism release type matrix shape, and arranges with horizontal single file, can comprise six type elements such as, 12 pairs 24 needle parts its each, and each uses a print needle printing each point, and with front and back symmetric arrays up and down.The top of print needle is stretched to printing paper P and is carried out the impact type dot printing by impacting China ink band (not shown) by printhead 112 drivings.
In addition, have a print cartridge (not shown) in the printhead 112.By the print cartridge ink-jet, such as, can finish by piezoelectric element.Printhead 112 comes letter punch and symbol by form a point (round dot) on the printing paper of not representing in Fig. 1.(print system comprises) printhead 112 can be controlled by control module shown in Figure 5 102 (and/or first control module 111 shown in Figure 27).Alternative, printhead 112 not only can be sprayed (being that air bag sprays) type by pressure (being piezoelectric element) type by film and constitute.Printhead 112 can utilize the known any structure of prior art, and detailed explanation will be omitted thus.
Reciprocating apparatus 114 is supporting printhead 112, and moves with printhead 112 along motor reel 118.Reciprocating apparatus 114 is driven by linear motor 116.Be described in detail as the back, control method of the present invention is controlled moving of reciprocating apparatus 114.Reciprocating apparatus 114, shown in Fig. 2 and 3, can be between a left side and right damper 128 and 130 back and forth.As indicated above, the moving direction of reciprocating apparatus (promptly horizontal) is vertical with the direction of feed (promptly vertical) of printing paper P.
The a lot of plane and permanent magnets 120 rectangle are arranged to parallel with the axis direction of motor reel 108 and its thickness direction is made into two magnetic poles, at the lower surface of the black iron plate yoke 115 of the bottom that is fixed to reciprocating apparatus 114.
Linear motor 116 comprises the motor reel 118 that runs through reciprocating apparatus 114, the permanent magnet 120 of one configuration set below reciprocating apparatus 114, a pair of constant speed coil 122 and 126 below the both sides of reciprocating apparatus 114 permanent magnet 120, and the commutating coil 124 between constant speed coil 122 and 126.
For example, permanent magnet 120 can use rare-earth magnet, for example has ferromagnetic samarium-cobalt class magnet.Therefore it to compare with ferrimagnet etc. be not only to approach but also light.
Constant speed coil 122 and 126 and commutating coil 124 be reversed and be fixed on the permanent magnet 120.Six parts are made into to be used for the double width of the permanent magnet 120 of each coil 122,124 and 126.The coil in left side is (left side) constant speed coil 122, and the coil on right side is (right side) constant speed coil 126.The coil of four centres is respectively a commutating coil 124.Basis not comes bright left hand regular linear motor 116 to produce a traction in coil when each coil is energized.Because each coil is fixed, the effect of tractive force is worked to permanent magnet 120, and reciprocating apparatus 114 moves along motor reel 108 whereby.The known any structure of prior art can be used for linear motor 116, and detailed narration is omitted thus.
(the left dampers 128 in Fig. 2 and 3) (left side) constant speed coil 122 is magnetized in direction forward when reciprocating apparatus 114 is moved with left direction.(the right dampers 130 in Fig. 2 and 3) (right side) constant speed coil 126 is magnetized with opposite direction when reciprocating apparatus 114 is moved with to the right direction.In the constant speed control of the reciprocating apparatus 114 that will narrate below, the magnetized connection and the disconnection that are used for constant speed coil 122 and 126 are combined.(Opportunity awaiting control for linear) controlled in the pushing that constant speed group circle 122 and 126 is used to hereinafter will narrate.
When reciprocating apparatus 114 when commutating zone is commutated, commutating coil 124 is magnetized.Control method of the present invention comprises the method that moves that flows through the Current Control reciprocating apparatus 114 of linear motor 116 by control, and this will be discussed in more detail.
Damper 128 and 130 is for example made by rubber.As shown in Figure 5, be fixed in the slit plate 140 of reciprocating apparatus 114, have a lot of timings slit S TWith a pair of edge slit S LAnd S REach slit on slit plate 140 for example, is located between the ray radiation element and light receiving element of optical pickocff 106A, and therefore can be detected by optical pickocff 106A.
Optical pickocff 106 by detect (from) slit S regularly T(light) can detect the translational speed of reciprocating apparatus 114.Optical pickocff 106A is by detecting regularly slit S TCan produce the rate signal SP that below will be narrated.In addition, optical pickocff 106A is by detecting slit, edge S LAnd S RWhether detect reciprocating apparatus 114 respectively by left hand edge LE and right hand edge RE shown in Figure 3.Optical pickocff 106A can produce left hand edge signal EL and right hand edge signal ER by detecting left and right edge.Some control method of the present invention has been utilized the testing result of optical pickocff 106A.This will be described in detail hereinafter.Can understand how each slit on the actual detected slit plate 104 of optical pickocff 106A, and explanation will be omitted thus.
Shown in Fig. 1,2,5 and 6, second reciprocator 150 comprises weight 152, balancer 154, linear motor 156, a pair of damper 158 and 160, and slit 162.As shown in figure 27, second reciprocator 150 can comprise second control module 151 that interrelates with control module 102 and be controlled at each element in second reciprocator 150.
Weight 152 almost has the vibration that is produced by reciprocating apparatus 114 with compensation with printhead 112 identical quality.Balancer 154 supports weights 152, and moves in the direction parallel but opposite with reciprocating apparatus 114.As shown in Figure 2, balancer 154 can be between left and right sides damper 158 and 160 back and forth.As mentioned above, the moving direction of balancer 154 (promptly horizontal) is vertical with the direction of feed (promptly vertical) of printing paper.
In addition, the gross weight of second reciprocator 150 and framework 101 can be made into to equal the gross weight of first reciprocator.In this case, the combination of second reciprocator 150 and framework 101 can be considered to second 150A of reciprocator.In this case, aim at the center of gravity of first reciprocator 110 or locate that approaching layout will reduce may be by the momentum that motion produced of reciprocating apparatus 114 and balancer 154 for the center of gravity of second 150A of reciprocator.
Linear motor 156 driven equilibrium devices 154.Be similar to linear motor 116, linear motor 156 is connected to control module 102.Point-and-raw type printer needn't provide the linear motor 156 and 116 as two individual components, is replaced but can resemble the such connection of electric wire that is connected to first reciprocator 110 relative to the balancer 154 that slowly moves.Damper 158 and 160 has and above-mentioned damper 128 and 130 same 26S Proteasome Structure and Functions, and slit plate 162 and optical pickocff 106B have slit plate 162 and the same 26S Proteasome Structure and Function of mentioning with preamble of optical pickocff 106A; Illustrate thus and will be omitted.
With reference to Fig. 3 and 7, will be presented now with action specification by the reciprocator 114 of the feeding synchronous communicating of the printing paper P of paper advance mechanism 104.Here, Fig. 7 is a flow chart of the prime step that is used to illustrate that the present invention controls.As narrating with reference to figure 2, reciprocating apparatus 114 is laterally reciprocal.Yet, see reciprocator 114 track as shown in Figure 3 that drawn because printing paper P vertically is fed by printing paper.Because the look relative position of reciprocator 114 from printing paper P has been used in following discussion, although these A, D etc. are being in identical position (for example, left hand edge LE) when reciprocating apparatus 114 is looked, some A, and D etc. are identified.
Fig. 3 represents that left commutating zone RL is set between left damper 128 and the right hand edge LE, and right commutating zone RR is between right damper 130 and right hand edge RE, between constant speed district CA on the left side edge LE and the right hand edge RE.Reciprocating apparatus 114 moves with a constant speed to the left or to the right at constant speed district CA, and in left He You district RL and RR commutation.Printable area is contained among the constant speed district CA.
Beginning, when the print command PP that receives from main frame 10 as an interrupt signal (step 1001), control module 102 starts after each element (step 1002) startup of printer 100, control module 102 is carried out pushing control, and pushing reciprocating apparatus 114 is to one of them damper (step 1002).For the purpose of illustrating, control module 102 presses left damper 128 with reciprocating apparatus 114.Control module 102 is pressed on left damper 128 to reciprocating apparatus 114 by magnetization constant speed coil 122 (or the drive circuit that is used for constant speed coil 122 that will narrate according to Figure 19).The magnetization of control module 102 control constant speed coils 122 is so that impose on 114 1 driving forces of reciprocating apparatus, and it can make reciprocating apparatus 114 contact left damper 128 with predetermined impacting, and can not collide with damper 128.Control module 102 has been provided with a sufficiently long actuation duration so that reciprocating apparatus 114 can both contact left damper 128 in any position.Alternatively, printer 100 certainly has a self-contained unit of the contact between reciprocating apparatus 114 and the damper 128.
Although " collision or bump " means between reciprocating apparatus 114 (or balancer 154) and another damper because greater than a predetermined contact that impacts generation that impacts in this is used, predetermined impacting can be according to reciprocating apparatus, and balancer and/or any other the structure and intensity of reciprocating mechanism are freely set up.Boundary between " collision " and " contact " may propose a problem, but be different from " contact " on " colliding or bump " on one point, here " collision or bump " may cause reciprocating apparatus, the infringement of balancer and/or other any reciprocating mechanism or damage and/or cause printing action and can not normally carry out.In the pushing of step 1002 control, the initial velocity of reciprocating apparatus 114 be zero and therefore reciprocating apparatus 114 contact usually, rather than collide left damper 128.
After reciprocating apparatus 114 compresses left damper 128, control module 102 is finished commutation control, commutation control make the commutating coil 124 of supplying with linear motor 116 drive current the pole reversal and with reciprocating apparatus 114 from the left damper 128 edge LE (promptly putting A) (step 1003 and 1004) that moves to left.Whether reciprocating apparatus is positioned at an A by detecting slit plate 140 top edge slit S LOptical pickocff 106A detect.Optical pickocff 106A transfers to control module 102 with testing result as left hand edge signal EL.Control module 102 keeps commutation control up to receiving left hand edge signal EL (step 1004).
Control module 102 uses the left hand edge signals as printing beginning regularly, and order (print system or be used for the driver of print system comprises) printhead 112 begins to print action (printing control, step 1005).Because drive current is applied constant speed coil 126 in linear motor 116 drive circuit of the constant speed coil 126 that will be narrated according to Figure 19 (or be used for), reciprocating apparatus 114 moves (constant speed control, step 1005) with a constant speed to damper 130 at constant speed district CA.Thus, printhead 112 can be in print zone in (not shown) on printing paper P, print desirable content.Owing in fact li do not need to prevent in the collision between reciprocating apparatus 114 and the damper under the constant speed control in step 1005, and in order to prevent low print capacity, the excitation of control module 102 control constant speed coils 126 is higher than with the speed of step 1002 under pushing control so that reciprocating apparatus 114 has.
When this line printing end and reciprocating apparatus 114 arrival right hand edge B, optical pickocff is by detecting slit, the edge S on the slit plate 140 RProduce right hand edge signal ER, and this signal is transferred to control module 102 (step 1006).
When this line printing is finished (step 1007 and 1008), control module 102 stops the action or the recovery (step 1008) of each element after ejecting printing paper P.
Print next line if desired, it is as follows that the printing action continues (step 1007).The paper feeding spacing of setting printing paper P now is that the explanation of the paper advance mechanism 104 of common paper feeding spacing (for example, A=25.4mm/6 (1/6 inch)) (step 1009 and 1010) will be presented.The pitch information of paper feeding is contained in print command PP, and control module 102 can be discerned the paper feeding spacing when receiving printing orders PP.
In this case, control module 102 is carried out normal paper feeding control and commutation control (step 1010), and reciprocating apparatus 114 is transformed into a C by a B when paper is fed thus.When the feeding end of paper, reciprocating apparatus 114 arrives the some C of edge RE on the right by the commutation action.Subsequently, program turns back to step 1005.Therefore, reciprocating apparatus 114 is similar to an A and B, (step 1005) by constant speed control between a C and D.Should be noted that the drive current reverse flow is although it is similar constant speed control.More particularly, control module 102 is provided to constant speed coil 122 between a C and the D with drive current, therefore is moved to the left reciprocating apparatus 114.When reciprocating apparatus 114 commutated in the RR district, control module 102 can be from the type information between main frame 10 acceptance point C and the D, or can receive the type information that has print command PP simultaneously.
When reciprocating apparatus 114 arrived left hand edge D, commutation and paper feeding were carried out simultaneously, and reciprocating apparatus 114 moves to D ' position thus.Identical process constantly repeats to finish up to printing.
The paper feeding spacing that printing paper P is set will be presented for the explanation greater than the paper advance mechanism 104 of the spacing (for example, 2A (1/3 inch)) of common paper.In this case, it needs the time of paper feeding, and next instruction is avoided and waited for to reciprocating apparatus 114.Control method according to the present invention subsequently be effective in this case.Skip when similarly, the present invention is used in common paper feeding in the printing of delegation or number row.
With reference to Fig. 3,8 to 10, will be presented according to an explanation of the control method of first embodiment of the invention.Fig. 8 is the sequential chart of another control method of comparing with first control method of implementing according to the present invention.Fig. 9 is used to illustrate according to the present invention first and the sequential chart of the control method of second embodiment subsequently.Figure 10 is the sequential chart that is used to illustrate the control method of embodiment.Figure 10 is the flow chart that is used to illustrate according to the control method of first embodiment of the invention.Print the explanation of control and paper feeding control and be illustrated among the following embodiment and be omitted.
In Fig. 9, CC1 represents constant speed control, and RC represents commutation control, and CC2 represents pushing control.Control method according to first embodiment of the invention shown in Figure 10 is followed by step 1009 "No" among Fig. 7.
When reciprocating apparatus 114 arrives the some B of edge RE on the right (step 1006), control module 102 is finished constant speed control CC1 and is begun commutation control RC (step 1101).Therefore, brake force is applied in reciprocating apparatus 114 from commutating coil 124.
In theory, when the speed of reciprocating apparatus 114 (be exactly during vanishing almost as reciprocating apparatus point of arrival B 1The time), control module 102 finishes commutation control RC and begins pushing control CC2.Therefore, control module 102 cuts off the excitation of commutating coil 124, and connects the excitation of constant speed coil 126, thus reciprocating apparatus 114 is moved to lentamente near (promptly the putting the Bx point) of right damper 130.B as described later 1The position of point has changed.
Control method according to first embodiment of the invention has determined commutation control RC to be switched to the timing of pushing control CC2 on characteristic by the actual speed of measuring reciprocating apparatus 114, just, the timing (back to back step 1002 is to 1005) that the excitation of commutating coil 124 is disconnected and the excitation of constant speed coil 126 is switched on.
In this piece article, may go to detect a position of reciprocating apparatus 114 speed vanishing by cycle actuation duration of measuring commutating coil 124.Yet, the variation of surrounding environment has caused the electric induction of commutating coil 124, magnetic potential on permanent magnet 120, and the change in the gap in linear motor 116, even constant thus drive current is applied in commutating coil 124, also might change from commutating coil 124 to reciprocating apparatus 114 brake force.Therefore, after the actuation duration of predetermined commutating coil 124, the speed of reciprocating apparatus 114 in fact can not vanishing.If the direction of the speed of reciprocating apparatus 114 to the right is positive, this has just produced following point.
If supposition is with reference to Fig. 3 and 8, commutating coil 124 applies 114 a period of time of reciprocating apparatus T that a brake force is advanced with speed a to edge B on the right RSuppose that also the time that reciprocating apparatus 114 is positioned at right hand edge B is zero.For in this case, control module 102 reckons with that reciprocating apparatus 114 is corresponding to B 1Point, or in other words, along the time T of speed slope h RVanishing, but actual reciprocating apparatus 114 is because the change of above-mentioned environmental condition might be presented at time T RAfter have aggregate velocity a 1The speed slope k.In this case, if constant speed coil 126 have excitation e-1 and therefore reciprocating apparatus 114 is driven by constant speed coil 126 in to the right direction, the then speed of reciprocating apparatus 114 increase is shown in Fig. 8 m.
Therefore, faint impact (with v of original supposition by allowing 0Speed) reciprocating apparatus 114 of contact damping device 130 is in fact by bigger impacting (with speed v 1) bump damper 130.Therefore, reciprocating apparatus 114 significantly bullet from damper 130 and the B from Fig. 3 2Point moves to B 10The point.Meanwhile, printhead 112 and reciprocating apparatus 114 may damage owing to the degree of depth impacts.Because first and second reciprocators 110 and 150 are installed on the same framework 101, the whole reciprocator that comprises first and second reciprocators 110 and 150 is owing to collision is vibrated.Except vibration, the reciprocating apparatus of commutation has the speed of rebounding, and may depart from subsequently time-write interval and print position undesiredly, reduces print quality, and infringement is connected to other mechanism of reciprocating apparatus 114.
Control method of the present invention is not the speed that is used for the actuation duration control reciprocating apparatus of commutating coil 124 by default, but the actual speed by measuring reciprocating apparatus 114 and measurement feedback controlled the actuation duration that is used for commutating coil 124 and the actual speed of reciprocating apparatus subsequently 114 to control module 102.The control method of this embodiment is with reference to Fig. 3, and 9 and 10 are narrated.
Suppose that it is 0 that reciprocating apparatus 114 is positioned at the time that right hand edge REB orders, then reciprocating apparatus 114 has a constant speed a to right.Therefore, constant speed CC1 finished in the time 0, and commutation control RC begins (step 1101).In Fig. 9, constant speed control CC1 indicates to be provided to a pumping signal of constant speed coil 126.
In commutation control, control module 102 is braked reciprocating apparatus 114 by using commutation control signal RC-1 excitation commutating coil 124.Control module 102 is selected the existing preset value of a simulation, and it can at room temperature make the constant speed a of reciprocating apparatus 114 at T RVanishing during this time.Among Fig. 9, commutation control RC indicates to be provided for a pumping signal of commutating coil 124.At this moment, control module 102 is also predicted reciprocating apparatus 114 along speed slope h, and the length of control module 102 pumping signal RC-1 is set to T R
Thereafter, optical pickocff 106A is by detecting timing slit S shown in Figure 4 TDetection is applied in the speed (step 1102) of the reciprocating apparatus 114 of brake force.Optical pickocff 106A indication testing result is Fig. 9 medium velocity signal SP.
Rate signal SP-2 indication is along the speed of the reciprocating apparatus 114 of speed slope h, and speed slope h is predicted by control module 102.In rate signal SP-2, time difference t 1-t 0In predetermined scope and speed normally and significantly reduce." predetermined scope " is determined in advance.By the rate signal SP-2 from optical pickocff 106A, control module 102 identification reciprocating apparatuses 114 are along speed slope h and brake force normal running (step 1103).Therefore, control module 102 is in time T RAfter stop to encourage commutating coil 124, begin to encourage constant speed coil 126 (step 1106), and do not change the actuation duration period T R(step 1105).
Pushing control CC2 shown in Figure 9 has indicated a pumping signal that will be applied in constant speed coil 126.As mentioned above, the actuating signal ratio that acts on constant speed coil 126 during the pushing signal CC2 acts on the pumping signal of constant speed coil 126 during constant speed is controlled CC1 a little less than.At the actuation duration T that step 1005 kept RCC2-1 is represented by solid line.In Fig. 9, initially push control signal CC2-1 and be presented at time T RBegin afterwards, but can be in time T RIn time, begin.
On the other hand, rate signal SP-1 has indicated along the speed slope k 1The speed of reciprocating apparatus 114, the brake force of control module 102 predictions does not here act on reciprocating apparatus 114.Be appreciated that time difference t on rate signal SP-1 1'-t 0' less than predetermined scope, and the speed of reciprocating apparatus 114 reduces not yet in effectly thereafter.Thus, control module 102 identification reciprocating apparatuses 114 are along the speed slope k 1And brake force abnormal operation (step 1103).Therefore, control module 102 is determined to change the actuation duration that is used for commutating coil 124 and is changed brake force (step 1104).More particularly, control module 102 is in step 1104, with the actuation duration T of commutating coil 124 RProlong Δ T '.As a result, control module 102 is in time T R+ Δ T ' stops this excitation afterwards and begins pushing control (step 1106).
Preferably control module 102 is according to t 1'-t 0The value of ' calculating Δ T.The speed that is appreciated that reciprocating apparatus 114 almost this point of vanishing (is promptly put B 1) when speed SP-1 is detected than when speed SP-2 is detected, more approaching damper 130.
Similarly, rate signal SP-3 indication is along the speed slope k 2The speed of reciprocating apparatus 114, here be applied in reciprocating apparatus 114 greater than the brake force of being predicted by control module 102.Be appreciated that time difference t 1" t 0" exceedingly reduce greater than the predetermined scope and the speed of reciprocating apparatus 114.Therefore, control module 102 identification reciprocating apparatuses 114 are along the speed slope k 2And brake force correctly is not applied in (step 1103).Therefore, the actuation duration of control module 102 decisions change commutating coil 124 and change brake force (step 1104).More particularly, control module 102 in step 1104 with the actuation duration T of commutating coil 124 RProlong Δ T ".Thus, control module 102 is in time T R-Δ T " stops this excitation afterwards, begins pushing control (step 1106).
Preferably, control module 102 is according to t 1" t 0The value of " calculating Δ T ".The speed that the is appreciated that reciprocating apparatus 114 almost point of vanishing (is promptly put B 1) when speed SP-3 is detected than when speed SP-2 is detected more near damper 130.
According to the control method of first embodiment of the invention, be appreciated that when constant speed coil 126 is energized, no matter the rate signal of any kind is detected, the almost vanishing of the speed of reciprocating apparatus 114.Therefore, as shown in Figure 7, reciprocating apparatus 114 is by faint relatively impacting with speed v 0Contact damping device 130.Therefore, control method of the present invention has prevented the collision between reciprocating apparatus 114 and the damper 130, prevents regularly undesirable skew of printing subsequently.
When commutation control RC finished, control module 102 began pushing control CC2 (step 1106).Dotted line CC2-1 is illustrated in time T R+ Δ T ' or T R-Δ T " after to act on the excitation of commutating coil 124.
Reciprocating apparatus 114 is by means of initial pushing control signal CC2-1 point of arrival B 2Meanwhile, control module 102 cuts off all excitations to linear motor 116 that comprise excitation constant speed coil 126.Therefore, do not have masterpiece to be used for reciprocating apparatus 114, and reciprocating apparatus 114 is because rebounding of self-damping device 130 move to a B 3
Very fast control module 102 is again by signal CC2-2 excitation constant speed coil 126.As a result, reciprocating apparatus 114 is pressed on right damper 130 (that is some B, again 4).In this way, at the pushing control period, control module 102 is pressed on reciprocating apparatus 114 on the damper 130 by the excitation of connecting repeatedly at interval with preset time and disconnect constant speed coil 126, finishes up to paper feeding.The repeating to switch on and off and prevented hot generation and saved electric energy of excitation.This " pushing " in this is used not only is suitable in theory reciprocating apparatus 114 is fixed on the damper 130, for example puts B 2, B 4And B 6A kind of situation, and be applicable to that reciprocating apparatus 114 leaves a kind of situation of damper 130 slightly is as at a B 3And B 5When the time started of signal CC2-1 changed, signal CC2-2 and CC2-3 changed thus subsequently.Certainly, the number of times of pushing control signal shown in Fig. 3 and 9, is not limited to three times.
When paper feeding finished, control module 102 was finished once commutation control (step 1107), encourages commutating coil 124 once more by signal RC-2, and reciprocating apparatus 114 proceeds to an E thus.One is similar to the constant speed control of carrying out and is proceeded to F point (step 1005) from the E point between C point and D point.
Then, with reference to Fig. 3,10 and 11 explanations according to second embodiment of the invention will be presented.Figure 11 is a flow chart of second embodiment of the invention.The control method of this embodiment shown in Figure 11 is followed the "No" of step 1009 among Fig. 7.The control method of present embodiment is identical with the control method of first embodiment, and wherein it measures the actual speed of reciprocating apparatus 114 and moving according to measurement result control reciprocating apparatus 114.Yet the control method of this embodiment is keeping commutating coil 124 to be different from the control method of first embodiment aspect the constant actuation duration when changing the actuation duration of constant speed coil 126.
Control module 102 begins commutation control (step 1201), and by having actuation duration T RPumping signal RC-3 excitation commutating coil 124.On characteristic, the control module 102 among this embodiment does not change the actuation duration that is used for commutating coil 124.Be similar to step 1102, optical pickocff 106A measures the speed of reciprocating apparatus 114 and as rate signal SP it is transferred to control module 102 (step 1201).
Under rate signal SP-1 situation, control module 102 is judged the actuation duration section time T that normal brake force is not applied to (step 1203) and prolongs default initial pushing control signal CC2-11 L(step 1204).In this case, reciprocating apparatus 114 bump dampers 130, but be prevented from rebounding and force to compress damper 130.Thus, reciprocating apparatus 114 is prevented from bouncing back into B 10Time T LImpacting of the framework 101 that long enough is caused by impact damper 130 with buffering, and preferably by control module 102 based on t 1'-t 0' calculate.
Control module 102 has used second and pushing control signal CC2-12 thereafter and CC2-13 and do not change them, because the speed of reciprocating apparatus 114 is almost nil on the time of these each effects of signal.This is similar to following situation.Be similar to first embodiment, ensuing order also is to return step 1005.
Under the situation of rate signal SP-2, control module 102 judges that normal brake force is applied in (step 1203), and uses default pushing control signal CC2-11, does not in fact change its actuation duration (step 1205).
Under the situation of rate signal SP-3, control module 102 judges that normal brake force is not applied to (step 1203), and prolongs the default initial pushing control signal CC2-11 time T of pushing control CC2 L(step 1204).In this case, pointing on the direction of damper 130 when the speed of making time spent reciprocating apparatus 114 that commutating coil 124 is finished brake force is negative value.Therefore, if it is not enough to reciprocating apparatus 114 is pressed on the damper 130 as default initial excitation signal CC2-11.If reciprocating apparatus 114 is not enough to be pressed on the damper 130, speed raises by starting apace after the paper feeding, and speed might become too high at the right RE shown in Figure 3 thus.Avoid this problem, initial excitation signal CC2-11 is extended time T L, be similar to the situation of rate signal SP-1.Certainly, it does not mean that time T in this case LBe not set to the value same with rate signal SP-1, but should the value best by control module 102 according to t 1" t 0" calculate.
Remarkable bullet was from damper 130 (B among Fig. 3 when the control method of second embodiment of the invention prevented reciprocating apparatus 114 vibrations 10) and regularly undesirable skew of generation printing subsequently.Under the situation of rate signal SP-2 and SP-3,130 collisions of reciprocating apparatus 114 discord dampers, but reciprocating apparatus 114 and damper 130 collisions under the situation of rate signal SP-1.In this piece article, the control method of this embodiment does not attempt to prevent the collision between them, but does not consider the existence of colliding, and by reciprocating apparatus 114 suitably is pressed on the damper 130, guarantees that reciprocating apparatus 114 is with subsequently normal time-write interval operation.The control method of this embodiment is also by preventing to vibrate the damage that prevents each element in reciprocator.Although no matter control method of the present invention collides whether exist, have a kind of selection to increase time T equably LTo initial pushing control signal CC2-11, embodiment is by avoiding increasing time T under the situation of rate signal SP-2 LPrevent to reduce print capacity to initially pushing control signal.
To be presented according to an explanation of the control method of third embodiment of the invention referring now to Figure 12 to Figure 15.Be similar to the control method of first embodiment, the actual speed of this examples measure reciprocating apparatus 114 and moving according to measurement result control reciprocating apparatus 114.Yet the control method of this embodiment reaches on a time point of the actual vanishing of speed that detects reciprocating apparatus 114 and begin to push the control method that is different from first embodiment aspect the control behind this time point.
Figure 12 is a flow chart that is used to illustrate this embodiment control method principle.Figure 13 is the flow chart that is used to illustrate according to the control method of third embodiment of the invention.The control method of this embodiment shown in Figure 13 is connected on step 1009 "No" back among Fig. 7.Figure 14 is the sequential chart of four signals of a time point that will detect the speed vanishing of reciprocating apparatus 114.Figure 15 is a digital circuit diagram that is used to produce two signals shown in Figure 14.
At first, control unit 102 begins commutation control (step 1301), and by having the actuation duration period T RExcitation signal energizes commutating coil 124.On characteristic, the control module 102 among this embodiment does not change cycle actuation duration of commutating coil 124.Optical pickocff 106A measures the speed of reciprocating apparatus 114 and it is transferred to control module 102 as a rate signal SP, is similar to step 1102 (step 1302).
After the speed vanishing of reciprocating apparatus 114 (in time T R0) control module 102 finishes commutation control RC (in time T R1), and subsequently (in time T R2) begin pushing control CC2 (step 1303 and 1304).
With reference to Figure 14 and 15, detection time T R0And T R2A kind of explanation of method will be presented.As a prerequisite, on phase place with respect to the timing slit S of slit plate 140 TThe timing slit S that postpones pi/2 (radian) T' be provided to slit plate 140 or be installed in another slit plate on the reciprocating apparatus 114.Can detect this timing slit S T' optical pickocff 106C (not shown) with respect to timing slit S T' be fixed.
With reference to Figure 14, signal SP is that optical pickocff 106A is by detecting regularly slit S TA rate signal that produces.Signal SP ' is that optical pickocff 106C is by detecting regularly slit S TA rate signal of ' generation.Each is a direction signal that is produced by reciprocating apparatus moving direction detection signal generator 50 shown in Figure 15 for signal DR and DL.Direction signal DR is that indication reciprocating apparatus 114 is to a mobile dextrad signal of right (that is, leveling off to the direction of damper 130).Direction signal DL is that indication reciprocating apparatus 114 is at left a mobile left-hand signal of direction (that is, in the direction away from damper 130).Point U 0It is a position of reciprocating apparatus 114 conversion moving directions.
Figure 15 represents an example of reciprocating apparatus moving direction detection signal generator 50 shown in Figure 15.Signal generator 50 comprises 52, two "AND" circuits 54 of SP signal edge detector and 58,12, two J-K flip flops 60 of negative circuit (NOT circuit) and 61.62 expressions and SP compare a clock pulses in the cycle with enough weak points with SP ' signal.Be generally the trigger 60 of " 0 " and a reset signal of 61 after 64 expressions are used to connect power supply, start trigger 60 and 61.
"AND" circuit 58 is carried out a logic add between an end of oppisite phase of the SP ' signal of output of SP signal edge detector 52 and negative circuit (NOT circuit) 12.In the forward position of SP signal, when SP ' signal is 0 and an output of circuit 58 be 1 and be imported into the J end of J-K flip flop 61 subsequently.In this case, K end be 0 and thus trigger 61 be set, output dextrad signal DR is 1.
Subsequently, when SP ' signal became 1, the output of "AND" circuit 58 became 0, was imported into the J end of J-K flip flop 61 subsequently.In this case, K end be 1 and thus trigger 61 be reset, output (or cut-out) dextrad signal DR is 0.
"AND" circuit 54 is carried out in an output of SP signal marginal detector 52 and a logic add between SP ' signal.In the forward position of SP signal, one of "AND" circuit 54 is output as 1, and it is imported into the J end of J-K flip flop 60 subsequently.In this case, K end be 0 and thus trigger 60 be set up, output left-hand signal DL is 1.
After this, when SP ' signal became 0, the output of "AND" circuit 54 became 0, was imported into the J end of trigger 60 subsequently.In this case, K end through negative circuit (NOT circuit) 12 be 1 and trigger 60 be reset, output (or disconnection) left-hand signal DL is 0.
Control module 102 is found out U from four signals shown in Figure 10 0Point, and identification is corresponding to the time T of this point R0Just, U 0Point is corresponding to the almost mid point of SP ' signal, and SP ' signal is corresponding to that section of dextrad signal DR disappearance and the appearance of left-hand signal.Because control module 102 is up to detecting left-hand signal D L, just identify U 0Point, the time T of control module 102 when the left-hand signal occurs R1Finishing commutation control RC, and (time T just after this R2) begin pushing control CC2.
According to the control method of third embodiment of the invention, in fact control module 102 becomes 0 back excitation constant speed coil 126 in the speed that confirms reciprocating apparatus 114.Therefore, reciprocating apparatus 114 is with quite slow predetermined speed v shown in Figure 12 0Contact damping device 130.Therefore, control method of the present invention has prevented the collision between reciprocating apparatus 114 and the damper 130, prevents printing then undesirable skew regularly.Because the speed of reciprocating apparatus 114 is at (that is T, in one of right small time R2-T R0) once changed into negative value, be used for cycle actuation duration of the initial pushing control signal CC2-21 of constant speed coil 126, be set to greatlyyer by the small time cycle, be similar to the situation of the second embodiment medium velocity signal SP-3.Control module 102 uses other length of the pumping signal of each pushing control signal CC2-22 and CC2-23 to be used as it by default signal length.
Explanation with reference to Figure 16-21 fourth embodiment of the invention control method will be presented.The characteristic of this embodiment control method comprises the variation according to the variations in temperature correction brake force of reciprocating apparatus 114.This embodiment or can utilize is used to measure the temperature around the commutating coil 124 and is used for a kind of method according to the correction brake force of measuring as a result, perhaps can utilize measurement by the actual current of commutating coil 124 and by utilizing a kind of method of testing result correction brake force directly or indirectly.
Figure 16 is to use the block diagram according to an example of the control circuit 70 of fourth embodiment of the invention control method.Figure 17 is the block diagram of an example of explanation timer circuit shown in Figure 16.Figure 18 is a curve of temperature-resistance relation on the expression Temperature Detector 82, Temperature Detector 82 near control circuit shown in Figure 16 is measured commutating coil 124 temperature and be used during the brake force of change commutating coil 124.Figure 19 is the flow chart that is used to illustrate according to first kind of situation of fourth embodiment of the invention.The control method of this embodiment is followed the "No" of step 1009 among Fig. 7 in Figure 19.Figure 20 is a flow chart that is used to illustrate according to second kind of situation of fourth embodiment of the invention.The control method of this embodiment shown in Figure 19 and 20 is connected on step 1009 "No" back among Fig. 7.Figure 21 is the curve that is illustrated in temperature-current relationship in the commutating coil 124, and it is used when control circuit shown in Figure 16 70 changes brake force according to the electric current that flows through commutating coil 124.
Described and this control method of comparing, the speed that detects reciprocating apparatus 114 by the actuation duration of measuring commutating coil 124 according to the control method of first embodiment of the invention be zero a bit.Yet, because the change of environmental condition might change the restraining coil of commutating coil 124.For example, when temperature raise, the resistance of commutating coil 124 increased, and reduces for given electric current and voltage, has reduced brake force thus.In this case, commutating coil 124 changes in resistance depend primarily on commutating coil 124 variation of temperature.The rising of the temperature in the commutating coil 124 depends primarily on self heating that resembles the commutating coil 124 that is attended by reciprocating apparatus 114 motion, and by the rising of carrying out the environment temperature that printhead caused of printing action.
Use the control circuit 70 of this embodiment control method to comprise as shown in figure 16, microprocessor unit (MPU) 72, MPU bus 73, timer 74, I/O (I/O) register 76, receive interrupt circuit (holding circuit) 78, AC/DC converter 80, Temperature Detector 82, amplifier 84, transistor 86, and current sense resistor 88.In these elements, element 72-80 can use or be combined into front first to the 3rd embodiment individually.In following explanation, these elements constitute the major part of control module 112.
MPU 72 is controlled at each element in the control circuit 70 via MPU bus 73, controls reciprocating apparatus 114 thus.MPU 72 is the information of special instruction I/O register 76 brake force that will be corrected when needed.MPU 72 produces the reformed brake force information of wanting by the electric current that utilizes near the temperature the commutating coil 124 or flow through commutating coil 124.For example, imported MPU 72 in advance about brake force delta data (with respect to resistance variations and resistance variations) with respect to variations in temperature in the commutating coil 124.In other words, imported MPU in advance about the brake force delta data that changes with respect to electric current.
Timer 74 is used to set cycle actuation duration of commutating coil 124 and constant speed coil 122 and 126.As shown in figure 17, for example it has four counter 75a-75d and four buffer 77a-77d, and can receive timer clear signal CL, reference clock signal BC, mode signal MD and selection signal SE.
Timer can be from MPU 72 accesses.An initial value is set up by each P input of counter 75a-75d by timer clock signal C L (presetting).After this, for a slit signal period, counter 75a-75d counting mode signal MD becomes the reference clock numeral of a time point of " H ".When MPU 72 catch in the slit forward position in the signal period or back along the time, MPU 72 cuts off mode signal MD, reads via the time count value by the buffer circuits 77a-77d that selects signal SE to select.When similarly, cycle actuation duration that is used for commutating coil 124 output that can be set at counter 75a-75d is proved.
I/O register 76 temporarily and replaceably keeps being sent to and sending the various information of MPU 72.For example, I/O register 76 can receive from the right hand edge of optical pickocff 106A and left hand edge signal ER and EL, and a control signal is sent to linear motor 116.Receiving interrupt circuit 78 receives and transmits print command PP discontinuously and instruct I/O register 76 from other of main frame 10.
The first aspect of this control method detects near the temperature the commutating coil 124 and revises the brake force variation of commutating coil.So " near the temperature the commutating coil 124 " comprises commutating coil 124 and near the temperature it in theory.In this case, the control circuit 70 among Figure 16 will connect Temperature Detector 82 to amplifier 84, and transistor 86 is provided selectively.
Temperature Detector 82 for example can utilize the known any thermostat of prior art.Temperature Detector 82 is arranged so that its test section is connected to reciprocating apparatus 114 and is positioned near the of commutating coil 124 or fixing with respect to reciprocating apparatus 114.It diminished when a semiconductor resistor variation on thermoregulator raise with box lunch temperature shown in Figure 180, and temperature information is sent to amplifier 80.Because characteristic shown in Figure 180 is not a straight line, it is amplified partly or MPU 72 uses the linear correction of a form (not shown).
With reference to Fig. 7,16-19, an explanation of control method will be presented now, and here the main element of control module 102 constitutes like this, and control circuit 70 and printer 100 comprise Temperature Detector 82 and amplifier 84.
MPU 72 receives the print command PP (step 1001) that is passed reception interrupt circuit 78 and I/O register 76 by main frame 10 as a processor of control module 102.By the way, in following explanation, the pitch of feed that print command PP is provided with paper is 2A (1/3 inch), and the explanation of the subprogram of step 1009 and 1010 is omitted.Step 1007 and 1008 explanation also are omitted.
According to print command PP, MPU 72 order I/O register 76 excitation constant speed coils 122 or 126 1 preset times are so that move on to a left side or right damper 128 or 130 (steps 1002) with reciprocating apparatus 112.After this, " preset time cycle " is that a sufficiently long time cycle is to enable reciprocating apparatus 114, no matter where it is, always arrive damper 122 or 126.According to such instruction, I/O register 76 is that constant speed coil 122 is connected pumping signal L or connected pumping signal R to constant speed coil 126.In order to illustrate, reciprocating apparatus 114 is pressed on the damper 128.
After cycle, 76 cut-outs of MPU 72 order I/O registers are to the excitation of constant speed coil 122, and excitation commutating coil 124 (step 1003) at preset time.For such instruction, I/O register 76 shutoff signal L also connect commutation control signal RV in order to excitation 124 1 preset time cycles of commutating coil.
Then, when left hand edge signal EL (step 1004) when optical pickocff 106A passes I/O register 76 and is sent to MPU 72, the excitation that MPU 72 instruction I/O registers 76 cut off commutation coil 124, connection is to the excitation of constant speed coil 126, and makes print unit 122 begin to print (step 1005).According to such instruction, I/O register 76 shutoff signal RV, connection signal R, and connection is to the print signal P ' of print unit 122.Thus, reciprocating apparatus 114 is carried out printing when constant speed is controlled.
When right hand edge signal ER (step 1006) when optical pickocff 106A passes I/O register 76 and is sent to MPU 72, MPU 72 order I/O registers cut off constant speed coils 126, and connect commutating coil 124 (step 1401).According to this instruction, I/O register 76 shutoff signal R and connection signal RV.Thus, brake force is applied in reciprocating apparatus 114.
For the commutating coil 124 of decision brake force, an initial value in its cycle actuation duration, as indicated above, be set to T RMPU 72 receives from Temperature Detector 82 process amplifiers 84, A/D converter 80, and the testing result of I/O register 76, and determine whether that this result should be corrected (step 1403).In other words, if the variations in temperature of room temperature in allowed limits, MPU 72 judges that present brake force is normal and this actuation duration period T is kept in decision R(step 1405).On the other hand, if the variations in temperature of room temperature has surpassed the scope that allows, MPU 72 judges that present brake force is unusual and decision changes the actuation duration period T R(step 1404).Here, initial excitation period of time T RCorresponding in temperature t 10The brake force of (that is, room temperature) setting, and Temperature Detector 82 output temperature t when internal resistance is N down 10
Temperature t when as shown in figure 18, Temperature Detector 82 detects internal resistance minimizing Δ R 12And the temperature t of internal resistance when increasing Δ R 11Represent t if suppose the MPU reception from Temperature Detector 82 temperature informations 12, MPU 72 discerns with respect to the brake force variation of variations in temperature and changes present brake force Energizing cycle extremely, such as, T R+ α is so that corresponding at initial value T RAnd temperature t 10The brake force that (room temperature) is provided with down.This is for Temperature Detector 82 detected temperatures t 11Situation certain.Thus, suitable brake force is applied in reciprocating apparatus 114, prevents the collision of reciprocating apparatus 114 and damper 130.
Second kind of situation of control method can be fed back by commutating coil 124 and flow to the electric current of MPU 72 and according to the brake force of the variation correction commutating coil 124 of electric current (or temperature).In this case, the control circuit among Figure 16 70 is connected to transistor 86 and current sense resistor 88 with amplifier 84.Temperature Detector 82 is provided selectively.
The colelctor electrode of transistor 86 is connected to commutating coil 124, and its emitter stage is connected to current sense resistor 88, and its base stage provides signal RV by I/O register 76.When signal RV is provided, when transistor 86 drives commutating coils 124 and current sense resistor 88 is measured the electric current that flows through commutating coil 124.
In this case, according to Figure 20 and 21, the explanation of control method of the present invention will be presented.Because elemental motion is similar to those actions of control method first aspect, has only the diverse ways of revising brake force to be described.
In the commutation control of step 1501, the initial value of the actuation duration of commutating coil 124 similarly is set to T RMPU 72 orders I/O register 76 excitation commutating coils 124 in the action time of brake force, and corresponding I/O register 76 is provided to commutating coil 124 (step 1501) with signal RV.Correspondingly, transistor 86 drives commutating coil 124, and synchronously will arrive amplifier 84 (step 1502) through the current feedback of commutating coil 124.
MPU 72 receives and flows through the testing result of commutating coil 124 current values of amplifier 82 and A/D converter 84 from I/O register 76, and judges whether this result should be corrected (step 1503).As discussed above, it has a conversion table directly current value being transformed into brake force, or a pair of form with the temperature that current value converted to commutating coil 124 and the temperature form corresponding to brake force.In other words, MPU 72 can be by judging that content is directly calculated current value or it can calculate the variations in temperature of commutating coil 124 from current value.In a word, if the difference of current value of measuring (or temperature of calculating by its) and planned value in predetermined scope, MPU 72 judges that present brake force is normally and keeps the actuation duration period T R(step 1505).On the other hand, if the variations in temperature of room temperature has surpassed the scope that allows, MPU 72 judges that present brake force is unusual and decision changes the actuation duration period T R(step 1504).
For current value is converted to temperature value, MPU 72 can utilize, the electric current of commutating coil 124 for example shown in Figure 21-temperature relation curve, and utilize the temperature correction brake force that detects as mentioned above.Initial value T RCorresponding in temperature t 10Brake force that (room temperature) is provided with down, and when internal resistance be N ' time current sense resistor 88 output temperature t 10As shown in figure 21, the temperature t of resistance when N ' reduces Δ I in Temperature Detector 82 detects 22, and the temperature t of resistance value when N ' reduces Δ I in detecting 21 Hypothesis MPU 72 detections now are from the N-Δ I received current information of current detector 88, and near the temperature that MPU 72 identifies the commutating coil 124 are t 22And brake force is with respect to the variation of variation of temperature subsequently.Then, cycle actuation duration of the present brake force of MPU 72 changes for example is T R+ β is so that corresponding to initial value T RAnd temperature t 10The brake force that (room temperature) is provided with down.This situation for current detector 88 report current value N+ Δ I is real.Thus, normal brake force is applied in reciprocating apparatus 114, prevents reciprocating apparatus 114 and damper 130 collisions.
Control method according to fourth embodiment of the invention can generally be revised brake force by measuring near commutating coil 124 temperature or commutating coil 124 interior electric currents.Thus, reciprocating apparatus 114 is by quite weak impacting with predetermined speed v 0Contact damping device 130.Thus, the control method of this embodiment has prevented the collision between reciprocating apparatus 114 and the damper 130 and has prevented to print subsequently undesirable skew regularly.
With reference to Figure 22 to 25, will be presented according to the explanation of the control method of fifth embodiment of the invention.The control method of this embodiment keeps the actuation duration of commutating coil 124 to be similar to the control method of second embodiment aspect constant in the actuation duration that changes constant speed coil 126.Yet, they are distinguishing, wherein the control method of second embodiment measure the actual speed of reciprocating apparatus 114 and indicate reciprocating apparatus 114 and damper 130 between collision probability, and the control method of this embodiment confirms the collision between reciprocating apparatus 114 and the damper 130 according to the collision sensing signal of their mutual actual collision of expression afterwards.
Figure 22 is a collision detecting system that can be used for according to the control method of fifth embodiment of the invention.Figure 23 is the sequential chart that is used to illustrate according to the first aspect of fifth embodiment of the invention control method.Figure 24 is the flow chart that is used to illustrate according to the fifth embodiment of the invention first aspect.Figure 25 is the sequential chart that is used to illustrate according to the second aspect of fifth embodiment of the invention control method.Figure 26 is the flow chart that is used to illustrate according to the second aspect of the control method of fifth embodiment of the invention.The control method of this embodiment shown in Figure 24 and 26 is followed step 1009 "No" among Fig. 7.
The collision detecting system 90 of this embodiment is by measuring by the undesirable skew that impacts the printing timing that prevents subsequently that collision produced between reciprocating apparatus 114 and the damper 130.Be appreciated that similar system is used to collision between reciprocating apparatus 114 and the damper 128 and the collision between balancer 154 and each damper 158 and 160.
The collision detecting system 90 of this embodiment comprises, as shown in figure 22, is connected to first reciprocator 110 or preferably arrive the test bar 91 of framework 101, extension spring 92, switch 93, power supply 94, and resistance 95.Test bar 91 moves with reciprocating apparatus 114.Switch 93 is supported by spring 92 and can be connected to test bar 91.As mentioned above because damper 130 is made by rubber and when and can be out of shape during reciprocating apparatus 114 collision, test bar 91 direction to the right can move one corresponding to the length of being out of shape.Spring 92 has a spring constant, so that when reciprocating apparatus 114 is pressed on the damper 130 under normal condition, switch 93 can not connected.When test bar 91 was connected switch 93, electric current flow through and comprises switch 93, power supply 94, and the circuit of resistance 95, and electric current is removed as collision sensing signal CS thus.
With reference to Figure 23 and 24, (speed a) is stopped by right hand edge signal ER-1, and control module 102 beginnings are with respect to the commutation control RC (step 1601) of reciprocating apparatus 114 when the constant speed of reciprocating apparatus 114 is controlled.Therefore, commutating coil 124 is provided commutation control signal RC-3, then brake force is acted on reciprocating apparatus 114.
If the initial brake force of estimating is applied in reciprocating apparatus 114, reciprocating apparatus 114 is along speed slope h.After commutation control finishes, the speed of reciprocating apparatus 114 almost vanishing and use that the pushing control CC2 of constant speed coil 126 enables the permission of reciprocating apparatus 114 usefulness faintly impact rather than collide contact damping device 130.Therefore, test bar 91 can not resist tensioning spring connect switch 93 and thus collision sensing signal CS do not produced.Do not have collision sensing signal CS (step 1602,1603), control module 102 uses the default pushing control time to carry out pushing control CC2 (step 1604).In this case, the pushing control signal comprises CC2-31, CC2-33, and CC2-34.Behind pushing control CC2, according to print command PP, this process is moved on to commutation control RC (step 1605) once more, and is attended by right hand edge signal ER-3 and transfers to constant speed control CC1 (step 1005).
On the other hand, if be applied in reciprocating apparatus 114 less than the brake force of initial pre-customized power, then reciprocating apparatus 114 is along the speed slope k.After commutation control finished, reciprocating apparatus 114 direction to the right had constant speed and and the result that controls as constant speed coil 126 constant speed of damper 130 collisions.Therefore, damper 130 produces the distortion shown in Figure 16 dotted lines, and test bar 91 thus the direction to the right move, connect switch 93 opposing tensioning springs 92.Subsequently, collision sensing signal CS is produced (step 1602).
When detected (step 1602), printing subsequently regularly might produce undesirable skew in signal CS is commutating the preset time of control RC after finishing.Thereby the first aspect of this embodiment is by prolonging the CC2-31 period of time T L1Make pushing cycle in control time (cycle actuation duration of constant speed coil 126) become CC2-33 (step 1603).In this case, reciprocating apparatus 114 bump dampers 130, and it is prevented from rebounding and compulsory being pressed on the damper 130.Therefore, prevent that reciprocating apparatus 114 from bouncing back into B shown in Figure 3 10The point.Period of time T L1It is a time cycle that is enough to cushion the framework vibrations (not shown) that produces by collision with damper 130.Except period of time T L1Outside being increased, pushing control CC2-33 subsequently etc. are similar to commutation control RC-4 and constant speed control CC1, illustrate thus to be omitted.
The collision sensing signal CS of this embodiment only represents whether reciprocating apparatus 114 collides with damper 130, but expression has not impacted much.Therefore, if collision detecting system 90 selectively with the foil gauge replacement that is attached to damper 130 feeding back collision information, control module 102 just can detect impacted much.Control module 102 can impact the change period of time T according to what detect R1Length.In this case, control module 102 has been stored the form of an expression with respect to the time cycle that impacts in advance.
In Figure 23, be not illustrated period of time T although be applied in the control of reciprocating apparatus 114 greater than the brake force of estimating brake force L1Also be increased in the sort of occasion.Be appreciated that reason is similar to signal SP-3 among Fig. 9, is different from signal SP-3 among Fig. 9, time T L1Length be to be positioned to be pressed on the damper 130 sufficiently long time cycle of presetting so that break away from the reciprocating apparatus 114 of damper 130.
The first aspect of this embodiment prevent reciprocating apparatus 114 when vibration significantly bullet from damper 130 (B in Fig. 3 10Point) and undesirable depart from subsequently printing regularly.When collision sensing signal CS produces, reciprocating apparatus 114 and damper 130 collisions.No matter in this respect, the control method of this embodiment does not attempt to prevent the collision between these parts, but the existence of collision, suitably reciprocating apparatus 114 is pressed on and guarantees on the damper 130 that reciprocating apparatus 114 is in subsequently printing proper operation regularly.The control method of this embodiment is also by preventing to vibrate the damage that prevents each element in reciprocator.Although control method of the present invention has a selection to increase to the time T of initial pushing control signal CC2-31 equably L1And no matter the existence of collision, under rate signal SP-2 situation, embodiment is by avoiding increasing to the time T of initial pushing control signal immediately L1Prevent to reduce printing effect.
In other words, might allow reciprocating apparatus 114 significantly bullet from damper 130.Although reciprocating apparatus 114 is bound to B shown in Figure 3 10Point is if in the long time of the vibration process of reciprocating apparatus 114 and other reciprocator, can weaken and disappear.Therefore, might control reciprocating apparatus 114 through after such time.According to Figure 25 and 26, the explanation of the second aspect of this embodiment will be presented.
It is similar to the step 1601 (step 1701) that control module 102 is carried out commutation control.Control module 102 judges whether collision sensing signal CS has been present in preset time in the cycle.If do not have signal CS in the cycle at preset time, control module 102 begins pushing control CC2 (step 1702,1704) at preset time in the past.The undeclared this situation of Figure 25.
If at preset time signal CS was arranged in the cycle, control module 102 cuts off and is used for reciprocating apparatus 114 in the preset time period T L2All interior pumping signals, and actual another system (step 1702 and 1703) of notice.During this cycle, caused by damper 130 and reciprocating apparatus 114, reciprocating apparatus 114 and any other vibration of reciprocator will weaken and disappear.In Figure 25, control module 102 is according to the generation of print command PP control pushing control signal CC2-35.Yet, if control module 102 is judged when being produced by collision sensing signal CS the period of time T when print command PP produces L2Compare too shortly with the time enough cycle that will eliminate the vibration of whole reciprocator, period T gets time extension L2
If collision detecting system 90 comprises that selectively will detect by impacting of producing of collision is a great foil gauge, control module 102 impacts period T computing time according to what detect L2
Reciprocating apparatus 114 is shifted to damper 130 (step 1705) according to pushing control signal CC2-35.At this moment, suppose reciprocating apparatus 114 B of damper 130 that rebounded significantly up to Fig. 3 10The point.Therefore, as shown in figure 25, pushing control signal CC2-35 is set to long enough makes the reciprocating apparatus 114 that breaks away from damper 130 be forced on the damper 130, and is set to, for example, and common pushing actuation duration cycle CC2-32 shown in Figure 23.Commutation control (RC-4) in step 1705 subsequently is with mentioned above identical, and explanation will be omitted thus.
When reciprocating apparatus 114 when bullet is from damper 130, the second aspect of this embodiment is interrupted ensuing operation, up to the time cycle long enough, to absorb by the vibration that collision was produced that has taken place, and recovery operation subsequently, prevent regularly undesirable skew of printing thereafter.In this respect, the second aspect of this embodiment prevents the damage of each element by the vibration of eliminating whole reciprocator.
Then be according to Fig. 6 and 27, an explanation of sixth embodiment of the invention control method.Figure 27 is a circuit diagram that is used for according to sixth embodiment of the invention.The control method of above-mentioned first to the 5th embodiment not only can be applicable to reciprocating apparatus 114, and can be applicable to balancer 154.The control method of this embodiment transfers to the control signal that only is used for one of first and second reciprocators 110 and 150 that has produced other reciprocator and carries out similarly control.This signal prevents to collide and/or eliminate subsequently the adverse effect that is produced by collision.
As shown in Figure 1, both made reciprocating apparatus 114, for example, only and damper 130 collisions, vibration certainty transfer to second reciprocator 150 via framework 101.Thus, if collision occurs in another reciprocator, need to eliminate the adverse effect that (being whole reciprocator) caused by collision in two reciprocators.
Control module 102 shown in Figure 6 except drive and controlling party on the contrary, similarly controlling reciprocator 114 and balancer 154.For example, when control module 102 utilizes the control method of fifth embodiment of the invention, both made collision sensing signal CS only be used for the detection of reciprocating apparatus 114, control module 102 can be controlled balancer 154 equally.The commutating coil that reciprocating apparatus 114 and balancer 154 use separately, and the commutating coil 124 of first reciprocator is easily by printhead 112 heating.Therefore, separately commutating coil might have different temperature and different brake force in first and second reciprocators.
Fig. 6 only shows a common control module 102, but as shown in figure 19, first control module 111 and second control module 151 can be provided together or be replaced by control module 102.151 two of first control module 111 and second control modules all or one of them be attached to control module 102 or main frame 10.
Referring now to Figure 27, if having only first control module 111 to be connected to main frame 10.Second control module 151 is linked first control module 111.When one of first and second control modules 111 and 151 received corresponding collision sensing signal CS114 or 154, it delivered to signal other control module that allows similar control (although direction is different).When control module 102 was provided, second control module 151 was connected to first control module 111, stays out of control module 102 so that interknit.
Thus, if a control signal only is that a reciprocating mechanism is handled the collision that has produced, the control method of sixth embodiment of the invention can be controlled other reciprocator by such control signal, guarantees the smooth motion of reciprocating apparatus 114 and balancer 154.
The control method of the present invention the first, the third and fourth embodiment has prevented the collision between reciprocating apparatus 114 and the damper 130.The control method of the present invention second and the 4th embodiment is eliminated the adverse effect that is caused by collision subsequently.In these methods any one prevented lower print capacity, prints regularly undesirable skew, and the print quality that reduces, or the like.Any use of also can using separately or combine in these methods.
Sixth embodiment of the invention can be used for resembling the quick point-and-raw type printer a kind of so shown in Figure 1 that comprises a printhead and a reciprocal balancer.
Control method of the present invention often is used to for the integral body variation that diminishes, and because the variation maintenance print quality of the brake force that the variation of environment causes.

Claims (16)

1. the step that comprises of the control method of a reciprocating apparatus is:
In the first area of a pair of damper, move back and forth a reciprocating apparatus with a constant speed with first area and second area interval;
At second area a brake force is acted on reciprocating apparatus;
Measure the speed that brake force is applied the reciprocating apparatus on it;
According to the speed of measuring at described measuring process, regulate the time cycle of described brake force action step;
In second area, reciprocating apparatus is pressed on the damper; And
Change described reciprocating apparatus direction at described second area.
2. the step that comprises of a method for controlling reciprocal device is:
In the first area of a pair of damper, move back and forth a reciprocating apparatus with a constant speed with first area and second area interval;
At described second area a brake force is acted on described reciprocating apparatus;
Measure the speed that described brake force is applied the described reciprocating apparatus on it;
Described reciprocating apparatus is compressed on the described damper at described second area;
According to the described speed of measuring at described measuring process, regulate the time cycle of described pushing step; And
Described reciprocating apparatus commutates at described second area.
3. according to the control method of the reciprocating apparatus of claim 2, wherein said regulating step has used the predetermined period of time of described pushing step, the speed that described here measuring process is measured is in predetermined scope, and used time cycle of a prolongation of the described time cycle of described pushing step, the speed that described here measuring process is measured is outside preset range.
4. the step that comprises of the control method of a reciprocating apparatus has:
A first area at a pair of damper with first area and second area interval moves back and forth a reciprocating apparatus with a constant speed;
At second area a brake force is acted on reciprocating apparatus;
Measure the speed that brake force just is being applied the reciprocating apparatus on it;
Reciprocating apparatus is pressed on the damper at second area;
After the speed of measuring process measurement reciprocating apparatus is zero, begin to push step; And
Make the reciprocating apparatus commutation at second area.
5. according to the control method of the reciprocating apparatus of claim 4, wherein push step and push described reciprocating apparatus repeatedly, and an initial driving connection cycle of described compactor is set to be longer than any connection cycle afterwards by driving repeatedly and disconnecting a kind of compactor.
6. the step that comprises of the control method of a reciprocating apparatus has:
First area at a pair of damper with first area and second area interval moves back and forth a reciprocating apparatus with a constant speed;
At second area a brake force is acted on reciprocating apparatus;
Measurement brake force just is being applied near the temperature of reciprocating apparatus on it;
Reciprocating apparatus is pressed on the damper at second area;
According to the temperature of measuring at measuring process, regulate the time cycle of described brake force action step;
Make the reciprocating apparatus commutation at second area.
7. the step that comprises of the control method of a reciprocating apparatus has:
First area at a pair of damper with first area and second area interval moves back and forth a reciprocating apparatus with a constant speed;
By a braking equipment brake force is acted on reciprocating apparatus at described second area;
The electric current of measurement in braking equipment;
Reciprocating apparatus is pressed on the damper at second area;
According to the electric current of measuring at described measuring process, regulate the time cycle of described brake force action step; And
In second area, make the reciprocating apparatus commutation.
8. the step of the control method of a reciprocating apparatus includes:
In the first area of a pair of damper, move back and forth a reciprocating apparatus with a constant speed with first area and second area interval;
In second area, a brake force is acted on reciprocating apparatus;
Reciprocating apparatus is pressed on the damper at second area;
Whether detect reciprocating apparatus by colliding with damper than predetermined big the impacting that impact;
According to the testing result of described detection step, regulate the time cycle of described pushing step; And
Make the reciprocating apparatus commutation at second area.
9. the step that comprises of the control method of a reciprocating apparatus has:
In the first area of a pair of damper, move back and forth reciprocating apparatus with a constant speed with first area and second area interval;
In second area, a brake force is acted on reciprocating apparatus;
In second area, reciprocating apparatus is pressed on the damper;
Whether detect reciprocating apparatus by colliding with described damper than predetermined big the impacting that impact;
Change the time started of described pushing step according to the testing result of described detection step; And
In second area, make the reciprocating apparatus commutation.
10. the step that comprises of a control method has:
In the first area of first and second dampers, move back and forth a reciprocating apparatus with a constant speed with a first area and a second area interval;
In the 3rd zone, move back and forth a balancer with a constant speed with third and fourth damper between the 3rd zone and one the 4th area region;
At second area a brake force is acted on reciprocating apparatus;
In the 4th zone a brake force is acted on balancer;
In second area, reciprocating apparatus is pressed in first and second dampers one;
In the 4th zone, balancer pressed in third and fourth damper;
Generation is about the first information of a collision between the reciprocating apparatus and first and second dampers;
Generation is about second information of a collision between the balancer and third and fourth damper;
According to first and second information control reciprocating apparatus;
According to first and second information control balancer;
Make the reciprocating apparatus commutation at second area; And
Make the balancer commutation in the 4th zone.
11. the step that the control method of a removable unit comprises has:
Move removable unit with a constant speed towards an end;
A brake force is acted on the removable unit that is just moving with a constant speed;
Measure brake force;
After brake force fails, a driving force is acted on removable unit removable unit is pressed against described that end; And
Control described brake force so that described removable unit contacts described end according to the brake force of measuring by predetermined impacting.
12. control method according to claim 11, the step that wherein said measuring process comprises has: directly measure brake force by measuring the speed that described brake force just is being applied the removable unit on it.
13. the step that the control method of a removable unit comprises has:
Move a removable unit with a constant speed towards an end;
A brake force is just put on the removable unit that moves with constant speed;
After brake force fails, a driving force is put on removable unit so that described removable unit is pressed on described that end;
Measure the contact between removable unit and the described end; And
According to the collision measurement result of described estimating step, the control driving force is to eliminate the vibration that is produced by collision.
14. control method according to claim 13, wherein said driving force effect control step comprise driving force is acted on removable unit so that just after described collision removable unit is pressed on described that end.
15. control method according to claim 13, wherein said driving force effect control step comprise driving force is acted on removable unit so that in described collision back described removable unit is pressed on described preset time cycle of that end.
16. a printer comprises:
A pair of damper with first and second area region;
Described that to one between damper reciprocating apparatus movably;
Be contained in a printhead on the described reciprocating apparatus;
Move a linear motor of described reciprocating apparatus; And
Control a control module of described linear motor,
Wherein said control module is controlled described linear motor so that move back and forth described reciprocating apparatus in the first area with a constant speed, at second area a brake force is acted on described reciprocating apparatus, the speed that just is being applied the described reciprocating apparatus on it according to brake force is regulated brake force cycle action time, at second area described reciprocating apparatus is pressed on a described damper, makes described reciprocating apparatus commutation at second area.
CNB991175255A 1998-10-21 1999-08-10 Method for controlling reciprocal device Expired - Fee Related CN1153677C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP29953998A JP3369488B2 (en) 1998-10-21 1998-10-21 Shuttle control method
JP299539/1998 1998-10-21

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CN1251810A true CN1251810A (en) 2000-05-03
CN1153677C CN1153677C (en) 2004-06-16

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KR (1) KR100591096B1 (en)
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102166893A (en) * 2009-12-14 2011-08-31 株式会社理光 Image forming apparatus capable of effectively damping vibration

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Publication number Priority date Publication date Assignee Title
JP2006248094A (en) * 2005-03-11 2006-09-21 Seiko Epson Corp Recording apparatus, and method and program for controlling recording apparatus
JP6642479B2 (en) * 2017-02-23 2020-02-05 京セラドキュメントソリューションズ株式会社 Perforator

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Publication number Priority date Publication date Assignee Title
JP3545557B2 (en) * 1996-12-13 2004-07-21 富士通周辺機株式会社 Printer shuttle control

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102166893A (en) * 2009-12-14 2011-08-31 株式会社理光 Image forming apparatus capable of effectively damping vibration
US8419156B2 (en) 2009-12-14 2013-04-16 Ricoh Company, Ltd. Image forming apparatus capable of effectively damping vibration
CN102166893B (en) * 2009-12-14 2013-06-26 株式会社理光 Image forming apparatus capable of effectively damping vibration

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KR20000029140A (en) 2000-05-25
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CN1153677C (en) 2004-06-16
TW442398B (en) 2001-06-23

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