WO2008089682A1 - Imprimante et procédé de commande d'impression - Google Patents

Imprimante et procédé de commande d'impression Download PDF

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Publication number
WO2008089682A1
WO2008089682A1 PCT/CN2008/070121 CN2008070121W WO2008089682A1 WO 2008089682 A1 WO2008089682 A1 WO 2008089682A1 CN 2008070121 W CN2008070121 W CN 2008070121W WO 2008089682 A1 WO2008089682 A1 WO 2008089682A1
Authority
WO
WIPO (PCT)
Prior art keywords
cassette
switching
print head
support plate
cam
Prior art date
Application number
PCT/CN2008/070121
Other languages
English (en)
French (fr)
Inventor
Zhenxing Zhao
Lei Zheng
Lei Che
Zhuanlong Yu
Original Assignee
Shandong New Beiyang Information Technology Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shandong New Beiyang Information Technology Co., Ltd. filed Critical Shandong New Beiyang Information Technology Co., Ltd.
Priority to JP2009545805A priority Critical patent/JP4874401B2/ja
Priority to US12/523,476 priority patent/US8246260B2/en
Priority to KR1020097016596A priority patent/KR101197449B1/ko
Priority to EP08700778.7A priority patent/EP2105316B1/en
Publication of WO2008089682A1 publication Critical patent/WO2008089682A1/zh

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Classifications

    • 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
    • B41J35/00—Other apparatus or arrangements associated with, or incorporated in, ink-ribbon mechanisms
    • B41J35/04—Ink-ribbon guides
    • B41J35/10—Vibrator mechanisms; Driving gear therefor
    • B41J35/12—Vibrator mechanisms; Driving gear therefor adjustable, e.g. for case shift
    • B41J35/14—Vibrator mechanisms; Driving gear therefor adjustable, e.g. for case shift for multicolour work; for ensuring maximum life of ink ribbon; for rendering ink-ribbon inoperative
    • 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
    • B41J35/00—Other apparatus or arrangements associated with, or incorporated in, ink-ribbon mechanisms
    • B41J35/02—Frames or holders for unwound short lengths of ink ribbons
    • B41J35/03—Frames or holders for unwound short lengths of ink ribbons the holder being movable to inoperative position, e.g. by swinging upwardly
    • 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
    • B41J35/00—Other apparatus or arrangements associated with, or incorporated in, ink-ribbon mechanisms
    • B41J35/04—Ink-ribbon guides
    • B41J35/10—Vibrator mechanisms; Driving gear therefor
    • B41J35/12—Vibrator mechanisms; Driving gear therefor adjustable, e.g. for case shift
    • 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
    • B41J35/00—Other apparatus or arrangements associated with, or incorporated in, ink-ribbon mechanisms
    • B41J35/22—Mechanisms permitting the selective use of a plurality of ink ribbons

Definitions

  • the present invention relates to a dot matrix printer and a print control method capable of performing ribbon switching.
  • the ribbons used in common dot matrix printers usually consist of a cassette and a strip.
  • the strip is wound inside the cassette.
  • black and red colors are arranged side by side in the width direction of the strip, and the strips of different colors are adjusted to a position opposite to the print head by swinging the cassette, and then the ribbon is printed by the print head of the print head.
  • the ink on the strip hits the print medium to form a colored image or text for color printing.
  • a "printer” (application number 00102697.6) disclosed in the Chinese patent includes a printer body having a ribbon cassette and a ribbon cassette raising/lowering unit, the latter being detachably mounted on the frame.
  • the side portion is used to raise and lower the ribbon cartridge.
  • the ribbon cassette raising/lowering unit includes a gear mechanism for transmitting the rotation of the drive shaft mounted on the frame to the bracket that is detachably mounted on the frame, and a cam mechanism for raising And a ribbon cartridge, a clutch mechanism for selectively transmitting rotation of the gear mechanism to the cam mechanism, and an actuator for connecting and disconnecting the clutch mechanism. Therefore, a monochrome printer can be used as a multi-color printer, and the rotational speed of the cam can be freely set.
  • This solution can use a monochrome printer as a multi-color ribbon printer, but the disadvantage is that when used as a multi-color printer, the ribbon cassette raising/lowering unit has a complicated structure, and it is necessary to provide a cam mechanism, a clutch mechanism, and an actuator, so that processing is performed. And control costs are higher.
  • This method involves too many areas (three areas), and each time the ribbon is switched, Both need the print head to extend through the entire area, that is, the print head needs to move in a moving direction to the first non-printing area at one end to switch the ribbon. If it is to be reset, the print head needs to move in the opposite direction to the other end.
  • the second non-printing area performs the release of the ribbon. In this way, a set of switching and releasing is completed, and the trajectory of the print head needs to be too long.
  • the switching and resetting of the prior art ribbon requires two sets of devices to be separately completed, that is, the ribbon lifting device and the ribbon releasing device. .
  • the printer provided by the prior art involves too many devices and has a complicated structure, so that the prior art is difficult to develop and the electrical and control costs are too high.
  • the present invention provides a printer comprising a print head, a print head transport mechanism capable of driving the print head to reciprocate, a carriage connecting the print head and the print head transport mechanism, and a belt equipped with a multi-color ribbon.
  • a cassette mounting mechanism capable of driving the cassette, the moving area of the printing head is composed of a printing area and a switching area, the printer further comprising: a cassette supporting mechanism, a cassette switching mechanism, and a reset mechanism , among them:
  • the cassette support mechanism is located in the switching area for correspondingly supporting the cassette mounting mechanism to different heights for switching the color of the ribbon when rotating to different angles;
  • the cassette switching mechanism is fixed on the carriage, in the switching area, for lifting the cassette mounting mechanism to a position away from the cassette supporting mechanism, and pushing the cassette supporting mechanism to rotate To different angles;
  • the reset mechanism is fixed on the cassette support mechanism for resetting the cassette support mechanism when the cassette support mechanism is no longer in contact with the cassette mounting mechanism and the cassette switching mechanism .
  • the cassette mounting mechanism includes a cassette support plate for supporting the cassette, and the support surface of the cassette is provided with a support surface;
  • the cassette switching mechanism includes a cam on which a first collision surface opposite to the collision surface of the support plate is disposed, and under the contact of the two collision surfaces, the forward movement of the cam is performed The cassette support plate is raised to a position disengaged from the cassette support mechanism.
  • the cassette support plate is further provided with a switching hole, and the cam maintains the cassette support plate to be separated from the position of the cassette supporting mechanism, and the cam continues to move forward.
  • the cut In the hole change switching is performed in the switching hole by pushing the belt support mechanism to rotate by continuing the forward movement.
  • the cassette support plate is further provided with a card slot for the cassette support mechanism to be locked into the card slot after being rotated to a set angle to limit the cassette support mechanism to Set the angle.
  • the cassette support mechanism comprises: a pendulum block and a swing block rotating shaft, wherein the pendulum block can swing horizontally around the swing axis of the pendulum block;
  • the pendulum block is further provided with a step, and cooperates with the card slot, when the pendulum block is rotated to a set angle, a corresponding step is inserted into the card slot, and correspondingly, the tape box is
  • the support plate is supported to a position corresponding to the desired color of the print head.
  • the reset mechanism comprises: a reset elastic element for returning the cassette support mechanism to an initial position.
  • the cassette switching mechanism further includes:
  • the cassette support mechanism further includes: a bracket supported under the cassette mounting mechanism; a bracket supporting side is further provided at one end of the bracket, and the cassette is initially located In position, it overlaps the bottom surface of the cassette support plate.
  • the printer further comprises: a cartridge support plate elastic member fixed between the bracket and the cartridge support plate.
  • the printer further comprises: control means for controlling the movement of the print head according to the number of movement steps of the print head corresponding to the color to be switched.
  • the present invention also provides a printing control method, in which a print head of a printer moves in a motion area formed by a printing area or a switching area a, and when the printing color is switched, the printing head drives The cassette switching mechanism enters the switching area from the printing area, contacts the cassette mounting mechanism, and
  • the cassette switching mechanism After raising the cassette mounting mechanism to a position away from the cassette supporting mechanism of the printer, the cassette switching mechanism continues to move forward, contacting the cassette supporting mechanism and pushing the cassette supporting mechanism Rotating to different angles to correspondingly support the cassette mounting mechanism to different heights; or
  • the cassette switching mechanism lifts the cassette mounting mechanism to a position away from the cassette supporting mechanism, and no longer contacts the cassette supporting mechanism to restore the cassette supporting mechanism to an initial angle .
  • the cassette mounting mechanism is correspondingly supported at an initial position
  • the cassette switching mechanism pushes the cassette support mechanism to rotate to different angles. Specifically, the print head continues to move forward by a set number of steps, and the cassette switching mechanism is driven to push the cassette support mechanism to rotate to Set the angle;
  • the method further includes: determining whether the number of steps of the print head corresponding to the new color is equal to the number of steps of the print head corresponding to the current color. If they are equal, print directly; otherwise, perform the switching action.
  • the present invention has the following advantages:
  • the movable area of the print head of the present invention has only two areas, that is, one printing area and one switching area.
  • the present invention integrates the switching and resetting mechanism, and has a simple structure and convenient operation and maintenance. At the same time, the switching and resetting of the ribbon can be completed in the same switching area by the present invention. Therefore, the printer of the present invention does not need to run through the entire area when the ribbon is switched or reset, and the movement track is short, thereby reducing electrical and control costs.
  • FIG. 1 is a perspective view showing the appearance of a printer according to a preferred embodiment of the present invention.
  • Figure 2 is a perspective view of the printing mechanism and the cartridge supporting mechanism of the printer shown in Figure 1;
  • Figure 3 is a perspective view of the ribbon converting mechanism of the printer shown in Figure 1;
  • Figure 4 is a perspective view of the cassette support mechanism in the ribbon conversion mechanism of the printer shown in Figure 1;
  • Figure 5 is a perspective view of the cassette switching mechanism in the ribbon conversion mechanism of the printer shown in Figure 1.
  • Figure 6 is Figure 1 Schematic diagram of the movement area of the demonstration vehicle;
  • FIG. 7 is a perspective view of a first embodiment of a cassette support mechanism for multi-color switching according to the present invention
  • 8 is a perspective view of a second embodiment of a cartridge support mechanism for multi-color switching according to the present invention
  • FIG. 9 is a schematic view showing a motion area of a multi-color carriage of the present invention
  • Figure 10 is a flow chart showing a preferred embodiment 1 of the printing control method of the present invention.
  • the invention provides a printer comprising a print head, a print head transport mechanism capable of driving the print head to reciprocate, a carriage connecting the print head and the print head transport mechanism, and a cassette with a multi-color ribbon and capable of driving the printer a cassette mounting mechanism with a box swinging, wherein the moving area of the print head comprises a printing area and a switching area, and the printer further comprises: a cassette supporting mechanism, a cassette switching mechanism, and a resetting mechanism, wherein:
  • the cassette support mechanism is located at a switching area of one end of the movement track of the print head, and the mechanism is configured to support the cassette mounting mechanism to different heights for switching of the ribbon when rotating to different angles ;
  • the cassette switching mechanism is fixed on the carriage, and in the switching area, the mechanism is configured to: raise the cassette mounting mechanism to a position away from the cassette support mechanism, and push the cassette support The mechanism is rotated to a different angle; or
  • the reset mechanism is fixed on the cassette supporting mechanism for resetting the supporting mechanism under the action of the resetting mechanism when the cassette supporting mechanism is no longer subjected to the force of the cassette mounting mechanism and the switching mechanism .
  • the cassette mounting mechanism includes a cassette support plate for supporting the cassette, and a support plate collision surface is disposed on the cassette support plate;
  • the cassette switching mechanism includes a cam on which a first collision surface opposite to the collision surface of the support plate is disposed, and under the contact of the two collision surfaces, the forward movement of the cam The cassette support plate is raised to a position disengaged from the cassette support mechanism.
  • the reset mechanism comprises: a reset elastic element for returning the cassette support mechanism to an initial position.
  • FIG. 1 is a perspective view showing the appearance of a printer according to a preferred embodiment of the present invention.
  • the machine includes: a paper feeding mechanism 1, a printing mechanism 2, a cassette mounting mechanism 3, a frame 4, a printing pad 5, a ribbon 6, a ribbon converting mechanism 7, and a position sensor 8.
  • a printing pad 5 is disposed between the left and right side walls on the back side of the frame 4, the paper feeding mechanism 1 is disposed on the back side of the printing pad 5, and the cassette mounting mechanism 3 is disposed on the front side of the printing pad 5. side.
  • the printing mechanism 2 is disposed on the front side of the printing pad 5 and between the paper feeding mechanism 1 and the cassette mounting mechanism 3.
  • the paper feed unit 1 is provided with a paper feed roller (not shown), and is driven by a paper feed motor (not shown) fixed to the frame 4 to drive a printing medium such as paper to be transported from the back side of the print pad 5 to the front side. And moving up along the print pad 5.
  • the printing mechanism 2 is composed of a print head 20, a carriage 21, a guide shaft 25, and a print head conveying mechanism.
  • the print head conveying mechanism includes a print head driving motor 22, a print head driving motor gear 22a, and a toothed belt 23.
  • the toothed belt drive wheel 24 and the toothed belt driven wheel 24 (hereinafter referred to as a toothed belt pulley (24, 24,)).
  • the print head 20 is a pin print head, and the ribbon is pressed by the print pin to push the ribbon ink onto the print medium to form an image or a character.
  • a print head drive motor gear 22a of the print head transport mechanism is fixed to the end of the print head drive motor 22, and rotates together with the print head drive motor 22, and at the same time, the print head drives the motor gear 22a and the toothed belt
  • the wheel 24 is engaged and the toothed belt pulleys (24, 24) are engaged with the toothed belt 23.
  • the print head 20 is mounted on a carriage 21 which is engaged with the toothed belt 23 by a claw 21e. Thereby, the rotation of the print head driving motor 22 is transmitted to the carriage 21 through the motor gear 22a, the toothed belt pulleys (24, 24,), and the toothed belt 23, and the print head 20 is driven by the carriage 21 Reciprocating.
  • the print head transport mechanism converts the forward and reverse rotation of the print head drive motor 22 into the reciprocating motion of the print head 20.
  • the guide shaft 25 passes through the carriage 21, and its both ends are supported on the left and right side walls of the frame 4, and are parallel to the printing pad 5 so that the print head is parallel to the printing pad 5 and a certain gap is maintained therebetween.
  • a cassette support plate 30 is provided on the cassette mounting mechanism 3, and the cassette support plate 30 is supported by the support shaft 40 on the left and right side walls of the frame 4, and at the same time, the belt The cartridge support plate 30 is free to swing relative to the frame 4 about the support shaft 40.
  • the cassette support plate 30 is further provided with a belt support plate collision surface 30b, a switching hole 30c, and a card slot 30d, which are used together with the ribbon conversion mechanism to realize the rise of the cassette. /reduce.
  • the ink ribbon 6 is composed of a tape cassette 60 and a tape strip 61.
  • a cassette 61 is mounted in the The cassette support plate 30 is swayed with the cassette support plate 30.
  • the first arm portion 60a and the second arm portion 60b extending forward of the tape cassette 60 are formed at both side edges of the tape cassette 60, and the tape strip 61 is taken out from the end portion of the first arm portion 60a through the print head 20 and the printing pad 5
  • the gap between them enters the second arm portion 60b, and the tape is wound around the inside of the tape cassette, and the ribbon winding shaft 31 drives the tape winding gear (not shown) to rotate, thereby continuously supplying the tape.
  • the width direction of the strip 61 up and down direction of FIG.
  • a plurality of strips 61a, 61b are formed side by side, for example, side by side, a black strip 61a is formed on the upper side of the strip 61, and a red strip 61b is formed on the lower side, and
  • any one of the strips 61a, 61b can be disposed at a position opposite to the print head 20, so that black or red color printing can be selectively achieved.
  • the position of the cassette support plate 30 at this time is referred to as the initial position to be described later, and the strip is When the 61b is opposed to the print head 20, the position of the cassette support plate 30 is taken as a set position to be described later.
  • the printer in this embodiment is provided with a ribbon converting mechanism 7 for raising/lowering the cartridge supporting plate 30 to thereby switch the strips 61a, 61b in the ribbon 6.
  • the ribbon converting mechanism 7 includes a cartridge supporting mechanism and a cassette switching mechanism.
  • the cassette support mechanism includes a bracket 70, a swing block 71, a swing block shaft 72, and a swing block tension spring 74.
  • the swing block 71 swings in the horizontal direction through the swing block shaft 72.
  • the cassette support mechanism is configured to support the cassette support plate and swing to different angles under the pushing of the cassette switching mechanism, correspondingly raising or lowering the cassette mounting mechanism to different heights for color Switch or reset with band.
  • the cassette switching mechanism includes a cam 73 and a carriage 21 fixed to the carriage 21, horizontally reciprocating along with the print head, pushing the cassette support mechanism to cause the cassette The support plate is swung to different heights to switch the ribbon.
  • the printer further includes control means (not shown) for controlling the movement of the print head in accordance with the number of steps of the print head corresponding to the color to be switched.
  • control means for controlling the movement of the print head in accordance with the number of steps of the print head corresponding to the color to be switched.
  • the number of steps of the print head movement is detected by the position sensor 8. Since the position sensor 8 of the dot matrix printer is a technique well known to those skilled in the art, it will not be described again.
  • the cassette support mechanism is shown in FIG. 2, the bracket 70 is located directly under the cassette support plate 30, and a support side 70a is disposed on one side of the bracket 70, when the cassette support plate 30 is located Initial position At the time of the setting, the bottom surface of the cassette support plate 30 is overlapped on the bracket supporting side 70a for supporting the cassette supporting plate 30.
  • a bracket support plate tension spring 76 is further disposed on the bracket 70 on the same side of the support side 70a, and one end of the cartridge support plate tension spring 76 is hooked to the first spring groove of the bracket 70. In the 70b, the other end is hooked on the recess 30a (see FIG. 6) of the cassette support plate 30, and the tension of the cassette support plate tension spring 76 causes the cassette support plate 30 to always receive a downward pulling force. Thereby, the cassette supporting plate 30 is smoothly and smoothly overlapped on the bracket supporting side 70a, thereby avoiding the printing color mixture caused by the up and down swing of the cassette supporting board 30 caused by the vibration of the printing head during the working.
  • FIG. 3 is a perspective view of the ribbon conversion mechanism of the printer shown in FIG. 1.
  • a pendulum block 71 On the other side of the bracket 70, a pendulum block 71, a pendulum block shaft 72, and a pendulum block spring 74 are further disposed.
  • the pendulum block 71 is mounted on the bracket 70 through the pendulum block rotating shaft 72, and can be wound around The pendulum shaft 72 is free to rotate in a horizontal plane.
  • FIG. 4 which is a perspective view of the cassette support mechanism in the ribbon conversion mechanism on the printer shown in FIG. 1.
  • the pendulum block spring 74 is end-mounted on the pendulum block slot 71a, and one end is hooked on the second tension spring slot 70c of the bracket 70.
  • the pendulum block 71 Under the pulling force of the pendulum block tension spring 74, The pendulum block 71 has a tendency to rotate against the potential needle in a horizontal plane. However, due to the limitation of the side wall 41 of the frame 4, the pendulum block 71 is blocked by the side wall 41, and the counterclockwise rotation cannot be continued, and the pendulum block yellowing 74 is not used in the cassette supporting mechanism.
  • the cassette support mechanism is returned to the initial position by the cassette support plate 30 and the cassette switching mechanism.
  • the angle at which the pendulum block 71 is located at this time is referred to as the initial angle of the pendulum block to be described later, that is, the position shown in Fig. 4.
  • the swinging block 71 is further provided with three steps 71b, 71c, 71d, wherein the height of the first step 71b is less than or equal to the height of the bracket supporting side 70a, and the height of the second step 71c is greater than
  • the bracket supports the height of the side 70a, and the height of the third step 71d is greater than the height of the second step 71c.
  • the pendulum block 71 When the cassette support plate 30 is in the set position, that is, when the cassette 60 is swung to a set height, at this time, the pendulum block 71 will be rotated to a certain angle, and the second step will be 71c is rotated directly below the cassette support plate 30, such that the height of the second step 71c is greater than the height of the bracket support side 70a, so that the cassette support plate 30 overlaps At the second step 71c, at this time, the third step 71d will just snap into the card slot 30d of the cassette support plate 30.
  • the position at which the pendulum block 71 is located at this time is referred to as the pendulum block.
  • the second set angle of 71 at this time, the height at which the cassette support plate 30 swings is exactly the position corresponding to the second strip 61b and the print head 20, that is, the set position.
  • a pendulum block collision surface 71e is further disposed on the pendulum block 71 for contact with the ribbon conversion mechanism, and the box is raised by the rotation of the pendulum block 71 under the collision of the ribbon conversion mechanism. High / lower.
  • the cassette switching mechanism is provided with a cam 73, a rotating shaft 73a, and a rotating shaft groove 21b on the side of the carriage 21 near the swinging block 71.
  • the cam 73 is mounted on the carriage by the rotating shaft 73a.
  • the cam 73 is freely rotatable in the vertical plane around the rotation shaft 73a.
  • a cam first collision surface 73b is disposed on the cam 73, and is parallel to the belt support plate collision surface 30b for contacting the belt support plate collision surface 30b, and the belt cassette is The support plate 30 is raised to the set height.
  • a cam second collision surface 21a is further disposed on the cam 73, and is parallel to the pendulum collision surface 71e for contact collision with the pendulum collision surface 71e, and pushes the pendulum block 71 clockwise. Rotating a certain angle realizes switching of the pendulum block 71 between the initial angle and the second position.
  • FIG. 5 it is a perspective view of the cassette switching mechanism in the ribbon converting mechanism on the printer shown in Fig. 1.
  • a cam tension spring 75 is further disposed on the cassette switching mechanism, and one end of the cam tension spring 75 is hooked on the tension spring groove 21c of the carriage 21, and the other end of the cam is attached to the cam 73.
  • the cam 73 On the bottom portion 73c, the cam 73 always has a tendency to rotate clockwise in the vertical plane under the pulling force of the cam tension spring 75. However, due to the restriction of the side wall 21d of the carriage 21, the cam 73 is blocked by the side wall 21d of the carriage 21 and cannot continue to rotate clockwise. Therefore, the cam 73 can be balanced in the position shown in Fig. 5 without an external force.
  • FIG. 6 is a schematic diagram of the motion area of the word car on the printer shown in FIG. 1 .
  • the area in which the carriage 21 moves back and forth is divided into a printing area P and a switching area Q, wherein the switching area Q can be further divided into a first switching area Q1, a second switching area Q2, and a third switching.
  • Area ⁇ is a schematic diagram of the motion area of the word car on the printer shown in FIG. 1 .
  • the area in which the carriage 21 moves back and forth is divided into a printing area P and a switching area Q, wherein the switching area Q can be further divided into a first switching area Q1, a second switching area Q2, and a third switching.
  • Area ⁇ is a schematic diagram of the motion area of the word car on the printer shown in FIG. 1 .
  • the area in which the carriage 21 moves back and forth is divided into a printing area P and a switching area Q, wherein the switching area Q can be further divided into a first switching area Q1, a second switching area Q2, and
  • the premise of the ribbon switching process is that the cassette support plate 30 is located at the initial position, that is, the position of the print head 20 corresponds to the black strip 61a.
  • the print head transport mechanism drives the carriage 21 to move from the printing area P to the switching area Q.
  • the carriage 21 moves from the printing area P to the first switching area Q1, and when the carriage 21 moves to the printing area P and the first switching area Q1
  • the cam first collision surface 73b beside the carriage 21 is just in contact with the belt support plate collision surface 30b.
  • the cam first collision surface 73b pushes the belt support plate collision surface 30b, and lifts the cartridge support plate 30 under the action of the thrust. High, and as the carriage 21 moves to a point where the first switching area Q1 and the second switching area Q2 meet, the cam first collision surface 73b raises the cassette support plate 30 to the highest The height is greater than the height of the third step 71d of the pendulum block 71.
  • the carriage 21 enters the second switching area Q2 and continues to move forward.
  • the cassette support plate 30 is always maintained under the support of the cam 73.
  • the cam second collision surface 21a is in contact with the pendulum collision surface 71e, and under the continuation of the carriage 21, the pendulum collision surface 71e is pressed, and the pendulum block 71 is in the carriage 21 Under the push, the tension of the pendulum block spring 74 is overcome, and the homeopathic needle rotates.
  • the carriage 21 enters the third switching area Q3 from the second switching area Q2, and the cassette support board 30 has no cam first collision because the cam 73 is caught in the cassette supporting plate switching hole 30c.
  • the support of the face 73b is lowered.
  • the third step 71d of the pendulum block 71 just snaps into the cartridge support plate slot 30d.
  • the cartridge support plate 30 will overlap the pendulum block.
  • On the second step 71c of the 71 that is, the pendulum block 71 is rotated by the cam 73 to the second position.
  • the cassette support plate 30 is set to the set position, at which time the strip 61b of the ribbon is switched to a position opposite to the print head 20.
  • the tape cartridge is also used.
  • the restriction of the support card slot 30d is stopped, so that the pendulum block 71 can be stabilized in the second position, that is, the cartridge support plate 30 can thus be stabilized in the set position.
  • the carriage 21 is moved from the third switching area Q3 to the second switching area Q2, and the edge of the cassette supporting plate switching hole 30c is pressed against the cam 73, because the pulling force of the cam tension spring 75 is much smaller than that of the belt box.
  • the pressing force of the edge of the support plate switching hole 30c, the cam 73 acts against the cam tension spring 75, and rotates counterclockwise away from the restriction of the cassette support plate switching hole 30c, and the carriage 21 is moved from the third switching area Q3 Moving back to the second switching area Q2 and the first switching area Q1.
  • the support plate 30 is still supported by the second step 71c of the pendulum block 71, so that the cassette support plate 30 is still stabilized at the set position.
  • the cassette conversion process ends, and the carriage 21 moves from the switching area Q to the printing area P to perform a print job.
  • the resetting process of the ribbon is accomplished by the interaction of the cassette support mechanism and the cassette switching mechanism in conjunction with the preferred embodiment described above.
  • the cassette is located at the set position, i.e., the red strip 61b is opposed to the print head 20.
  • the print head transport mechanism drives the carriage 21 to move from the printing area P toward the switching area Q.
  • the carriage 21 moves from the printing area P to the first switching area Q1.
  • the first collision surface of the cam 73b will be in contact with the belt support plate collision surface 30b, and as the carriage 21 continues to move forward, the cam first collision surface 73b pushes the belt support plate collision surface 30b, and is in thrust
  • the cassette support plate 30 is raised by the action.
  • the cam first collision surface 73b raises the cassette support plate 30 to the highest position, The height is greater than the height of the third step 71d of the pendulum block 71, so that the third step 71d of the pendulum block 71 is restricted from the cartridge support plate slot 30d.
  • the cam second collision surface 21a is just in contact with the pendulum collision surface 71e, but since no action occurs, the pendulum block 71 is now under the tension of the pendulum spring 74.
  • the carriage 21 is moved from the first switching area Q1 to the printing area P, and the cam first collision surface 73b is separated from the belt supporting plate collision surface 30b. .
  • the cassette support plate 30 is caused to descend until it is overlapped on the bracket supporting side 70a.
  • the cassette supporting board 30 is restored to the initial position, the ribbon strip 61 and the print head.
  • the corresponding position of 20 is thus restored to the 61a position by the strip 61b.
  • the cassette reset operation is completed. Thereafter, the carriage 21 can continue to move from the switching area Q to the printing area P to perform a print job.
  • the printer provided by the present invention can also support the conversion of more than two multi-color ribbons, as shown in FIG. 7 , which is a perspective view of the first embodiment of the cassette support mechanism for multi-color ribbon switching according to the present invention.
  • the steps are a first step 71b, a second step 71g, a third step 71f, a fourth step 71c, and a highest fifth step 71d for limiting.
  • the first step 71b is a plane
  • the cam lifts the cassette support plate 30 to a position higher than the cassette support mechanism at the highest contact with the collision surface 30b of the cassette support plate. The position is maintained for a distance such that the highest fifth step 71d of the pendulum block 71 is rotated into the card slot 30d while the cam also quickly falls into the switching hole 30c. Thereafter, as the cam continues to move forward, the pendulum block 71 is pushed to rotate to a desired set angle, at which time the cassette support plate 30 is supported by the corresponding step at a desired set height. , to achieve the ribbon switch.
  • the first step 71b may also be a sloped surface, as shown in FIG. 8.
  • the first step 71b is The cassette support plate 30 has no contact.
  • the cam lifts up the cassette support plate to the highest position, it immediately falls into the switching hole 30c.
  • the highest fifth step 71d of the pendulum block 71 supports the cassette support plate 30 by its slope.
  • the fifth step enters the card slot 30d.
  • the cam pushes the pendulum block 71 to rotate to a desired set angle.
  • the cassette support plate 30 is supported by the corresponding step at a desired height. Switch the ribbon.
  • the resetting process of the ribbon is completed by the interaction of the cassette supporting mechanism and the cassette switching mechanism, and will not be described herein.
  • the present invention further provides a printing control method capable of driving the print head to reciprocate in two regions of a printing area and a switching area under the rotation of a driving motor; the method further includes:
  • the cassette switching mechanism enters the switching area, contacts the cassette mounting mechanism, and raises the mounting mechanism to a position away from the cassette supporting mechanism.
  • the cassette switching mechanism continues to move forward, contacting the cassette support mechanism and pushing the support mechanism to a different angle such that the cassette support mechanism supports the cassette mounting mechanism to switch to different heights;
  • the cassette switching mechanism no longer applies a force to the cassette support mechanism such that the support mechanism is reset by the reset mechanism.
  • the cassette switching mechanism raises the cassette support plate to be detached from the cassette support mechanism After the position, proceeding to push the belt support mechanism to rotate to a set angle to realize switching of the ribbon;
  • the cassette switching mechanism elevates the cassette supporting plate to be detached from the cassette supporting mechanism After returning from the position, the cassette support structure is restored to the initial position by the action of the elastic member to realize the reset of the ribbon.
  • the specific switching method includes the following steps:
  • Step 901 Initialize the printer.
  • Step 902 Determine whether a control command is received? If yes, go to step 903; otherwise, repeat step 902.
  • the control command is preferably data information that triggers the printer to print a new task. After receiving the control command, the printer performs the following switching or printing.
  • Step 903 Step 904: Calculate the number of steps of the print head corresponding to the new color, and determine whether the number of steps is equal to the number of steps of the print head corresponding to the current color. If they are not equal, step 905 is performed; otherwise, step 906 is performed.
  • Step 905 The print head enters a switching area to perform switching of the ribbon.
  • the color of the color band corresponding to the switching area Q data is divided into four areas, that is, from the near to the farthest from the printing area P: the elevated area Q1, the red switching area Q2 Purple switching area Q3, green switching area Q4.
  • the intersection of the printing area P and the switching area Q is P2, the intersection of the elevation area Q1 and the red switching area Q2 is P3, the intersection of the red switching area Q2 and the purple switching area Q3 is P4, and the purple switching area Q3 is
  • the intersection of the green switching area Q4 is P5, and the end of the green switching area is set to P6. Referring to FIG.
  • the cam moves from the printing area P to the switching area Q.
  • the cam contacts the collision surface of the cassette support plate 30, when the cam enters the When raising the area Q1, the cam raises the cassette support plate 30 until the cam moves to the position of P3, the cassette support plate 30 is raised to the highest position, at this time, black and The print heads are positioned opposite each other.
  • the cartridge support plate 30 can correspondingly be raised to a corresponding position, at this time, the color The band is switched to the color corresponding to the area.
  • the ribbon switching process of the printer is similar to that described above in FIG. 6, and will not be described here. Color Step Position Black 10 P 3 Red 11 P 4 Purple 12 P 5 Green 13 P 6 Table 1
  • Step 906 The print head returns to the print area P for printing.
  • the specific printing method is prior art and will not be described here.

Landscapes

  • Impression-Transfer Materials And Handling Thereof (AREA)
  • Electronic Switches (AREA)

Description

一种打印机及打印控制方法
本申请要求于 2007 年 1 月 17 日提交中国专利局、 申请号为 200710002431.K 发明名称为"一种打印机及打印控制方法 "的中国专利申请的 优先权， 其全部内容通过引用结合在本申请中。
技术领域
本发明涉及一种能够进行色带切换的点阵式打印机及打印控制方法。
背景技术
目前， 常见的点阵式打印机使用的色带， 通常由带盒和带条组成。 所述带 条缠绕在带盒内部。 通常， 在所述带条的宽度方向并排设有黑色、 红色两种颜 色， 通过摆动带盒， 将不同颜色的带条调整到与打印头相对的位置， 再通过打 印头的打印针将色带带条上的油墨击打到打印介质上， 形成彩色的图像或文 字， 实现彩色打印。
目前， 在中国专利中公开的《一种打印机》 (申请号为 00102697.6 )， 包括 一具有色带盒和色带盒升高 /降低单元的打印机主体，后者可拆装地安装在机 架的侧面部分上用以升高和降低所述色带盒。色带盒升高 /降低单元包括一齿 轮机构，用以将安装在机架上的驱动轴的转动传递到可拆装地安装在机架上的 托架上， 一凸轮机构， 用以升高和降低色带盒， 一离合机构， 用以有选择地将 齿轮机构的转动传递到凸轮机构， 以及致动器， 用以连接和断开离合机构。 因 此可以将一单色打印机用作一多色打印机， 并自由地设定凸轮的转速。该方案 可将一单色打印机用作多色带打印机，但缺点是作为多色打印机使用时， 色带 盒升高 /降低单元结构复杂， 需要设置凸轮机构、 离合机构和致动器， 因此加 工和控制成本较高。
此外， 美国专利局还公开了一种名为 《色带切换打印机》 （公开号为 US5468078 )的技术方案包括： 将打印头运动区域划分为一个打印区域、 以及 两个非打印区域共三个区域。其中，两个非打印区分别位于所述打印区的两端， 在两个非打印区端点处分别设置了色带抬起装置、 色带释放装置， 其中， 所述 色带抬起装置用于调整打印头与色带颜色相对位置，使色带设置成需要打印的 颜色； 所述色带释放装置用于将色带释放至初始高度。
这种方法涉及的区域过多 （有三个区域）， 同时在每次进行色带切换时， 都需要打印头贯穿整个区域，即打印头需沿一个运动方向运动至一端的第一非 打印区域进行色带的切换，如果要复位， 所述打印头还需向相反的方向运动至 另一端的第二非打印区域进行色带的释放。这样要完成一组切换和释放，打印 头需要运动的轨迹过长， 同时，该现有技术色带的切换和复位需要设置两套装 置来分别完成， 即色带抬起装置和色带释放装置。该现有技术提供的打印机涉 及的装置过多， 结构比较复杂， 因此， 使得该现有技术开发难度大， 且电气和 控制成本过高。
发明内容
有鉴于此，本发明的目的在于提供一种设计简单， 且加工和控制成本较低 的可色带切换的打印机及打印控制方法。
为解决上述问题， 本发明提供了一种打印机， 包括打印头、 能够带动所述 打印头往复移动的打印头输送机构、连接打印头与打印头输送机构的字车、装 有多色色带的带盒并能带动该带盒摆动的带盒安装机构，所述打印头的运动区 域由一个打印区域和一个切换区域组成， 所述打印机还包括： 带盒支撑机构、 带盒切换机构、 及复位机构， 其中：
所述带盒支撑机构位于所述切换区域， 用于在转动至不同的角度时，对应 地将所述带盒安装机构支撑至不同的高度进行色带颜色的切换；
所述带盒切换机构固定在所述字车上，在所述切换区域， 用于将所述带盒 安装机构抬高至脱离于带盒支撑机构的位置，和推动所述带盒支撑机构转动至 不同的角度；
所述复位机构固定在所述带盒支撑机构上，用于当所述带盒支撑机构不再 与所述带盒安装机构和所述带盒切换机构接触时 , 将所述带盒支撑机构复位。
优选的， 所述带盒安装机构包括用于支撑带盒的带盒支撑板，在所述带盒 支撑板上设有支撑板碰撞面；
所述带盒切换机构包括凸轮，在所述凸轮上设有与上述支撑板碰撞面相对 的第一碰撞面，在上述两个碰撞面的接触下， 随着所述凸轮的向前移动将所述 带盒支撑板抬高至脱离于所述带盒支撑机构的位置。
优选的， 所述带盒支撑板上还设有切换孔， 所述凸轮将所述带盒支撑板维 持至脱离于所述带盒支撑机构的位置后，所述凸轮随着继续向前运动进入该切 换孔中 ,并在该切换孔中通过继续向前移动推动所述带盒支撑机构转动实现切 换。
优选的， 所述带盒支撑板上还设有卡槽， 用于所述带盒支撑机构当转动至 设定角度后， 卡入所述卡槽中， 以将所述带盒支撑机构限制在设定角度。
优选的， 所述带盒支撑机构包括： 摆块、 摆块转轴， 所述摆块可绕所述摆 块转轴水平摆动；
所述摆块上还设有台阶， 与所述卡槽配合， 能够在所述摆块转动至设定角 度时， 有相应的台阶卡入所述卡槽中， 对应地， 将所述带盒支撑板支撑至需要 的颜色与打印头对应的位置上。
优选的， 所述复位机构包括： 复位弹性元件， 用于将所述带盒支撑机构恢 复至初始位置。
优选的， 所述带盒切换机构还包括：
转轴、 字车转轴槽， 所述凸轮通过转轴安装在字车转轴槽中， 使该凸轮可 以随所述转轴在垂直面内自由转动； 及
凸轮弹性元件， 所述弹性元件固定在所述凸轮与所述字车之间，在所述凸 轮弹性元件的作用下， 使所述凸轮恢复至初始位置。
优选的， 所述带盒支撑机构还包括： 托架， 所述托架支撑在所述带盒安装 机构的下方； 在所述托架的一端还设有托架支撑边， 在带盒位于初始位置时， 与所述带盒支撑板的底面搭接。
优选的， 所述打印机还包括： 带盒支撑板弹性元件， 固定在所述托架和所 述带盒支撑板之间。
优选的， 所述打印机还包括： 控制装置， 根据要切换的颜色所对应的所述 打印头的运动步数， 控制所述打印头的移动。
基于上述技术方案，本发明还提供了一种打印控制方法，打印机的打印头 运动在由一个打印区或和一个切换区域 a成的运动区或内， 当切换打印颜色 时， 所述打印头带动带盒切换机构由打印区域进入切换区域，接触带盒安装机 构， 并且，
将所述带盒安装机构抬高至脱离于该打印机的带盒支撑机构的位置后，所 述带盒切换机构继续向前移动，接触所述带盒支撑机构并推动该带盒支撑机构 转动至不同的角度，以相应地使该带盒支撑机构支撑所述带盒安装机构至不同 高度； 或
所述带盒切换机构将所述带盒安装机构抬高至脱离于所述带盒支撑机构 的位置后， 不再接触所述带盒支撑机构， 以使所述带盒支撑机构恢复至初始角 度。
优选的， 所述带盒支撑机构转动到初始角度时，对应支撑所述带盒安装机 构于初始位置；
所述带盒切换机构推动所述带盒支撑机构转动至不同的角度具体为： 所述打印头继续向前移动设定步数，带动所述带盒切换机构推动所述带盒 支撑机构转动至设定角度；
所述带盒切换机构不再接触所述带盒支撑机构具体为： 优选的，该方法还包括： 判断新颜色对应的打印头的步数与当前颜色对应 的所述打印头的步数是否相等， 如果相等， 则直接打印； 否则， 执行所述切换 动作。
与现有技术相比， 本发明具有以下优点：
本发明打印头可运动区域只有两个区域， 即一个打印区域和一个切换区 域， 本发明将切换和复位机构集成在一起， 其结构简单， 操作和维护方便。 同 时， 通过本发明能够在同一个切换区域完成色带的切换和复位。 因此， 本发明 打印机在色带切换或复位时， 打印头无需贯穿整个区域， 其运动轨迹较短， 从 而降低电气和控制成本。
附图说明
图 1为本发明优选实施例打印机的外观立体图；
图 2为图 1所示打印机的打印机构和带盒支撑机构的立体图；
图 3为图 1所示打印机的色带转换机构的立体图；
图 4为图 1所示打印机上的色带转换机构中带盒支撑机构的立体图； 图 5为图 1所示打印机上的色带转换机构中带盒切换机构的立体图； 图 6为图 1所示字车运动区域示意图；
图 7为本发明用于多颜色切换的带盒支撑机构实施例一的立体图； 图 8为本发明用于多颜色切换的带盒支撑机构实施例二的立体图； 图 9为本发明多颜色字车运动区域示意图；
图 10本发明打印控制方法的优选实施例一的流程图。
具体实施方式
本发明提供的一种打印机， 包括打印头、 能够带动所述打印头往复移动的 打印头输送机构、连接打印头与打印头输送机构的字车、装有多色色带的带盒 并能带动该带盒摆动的带盒安装机构，其中， 所述打印头的运动区域包括一个 打印区域、一个切换区域，所述打印机还包括： 带盒支撑机构、带盒切换机构、 及复位机构， 其中：
所述带盒支撑机构位于所述打印头运动轨迹的一端的切换区域，该机构用 于在转动至不同的角度时，对应地将所述带盒安装机构支撑至不同的高度进行 色带的切换；
所述带盒切换机构固定在所述字车上， 在上述切换区域， 该机构用于： 将所述带盒安装机构抬高至脱离于带盒支撑机构的位置，并推动所述带盒 支撑机构转动至不同的角度； 或
将所述带盒安装机构抬高至脱离于带盒支撑机构的位置且不再与所述带 盒支撑机构接触；
所述复位机构固定在所述带盒支撑机构上，用于在所述带盒支撑机构不再 受到带盒安装机构和切换机构作用力时，在该复位机构的作用下将所述支撑机 构复位。
其中， 所述带盒安装机构包括用于支撑带盒的带盒支撑板，在所述带盒支 撑板上设有支撑板碰撞面；
所述带盒切换机构包括凸轮，在所述凸轮上设有与上述支撑板碰撞面相对 的第一碰撞面，在所述两个碰撞面的接触下， 随着所述凸轮的向前移动将所述 带盒支撑板抬高至脱离于所述带盒支撑机构的位置。
优选的， 所述复位机构包括： 复位弹性元件， 用于将所述带盒支撑机构恢 复至初始位置。
下面结合附图对本发明的实施方式做进一步的详细阐述。
请参阅图 1所示，其为本发明优选实施例打印机的外观立体图， 所述打印 机包括： 送纸机构 1、 打印机构 2、 带盒安装机构 3、 框架 4、 打印垫板 5、 色 带 6、 色带转换机构 7、 位置传感器 8。 在框架 4背面侧的左右侧壁之间设置 打印垫板 5 , 所述送纸机构 1设置在所述打印垫板 5的背面侧， 所述带盒安装 机构 3设置在打印垫板 5的正面侧。 所述打印机构 2设置在所述打印垫板 5 的正面侧， 且位于所述送纸机构 1与所述带盒安装机构 3之间。
送纸部 1设有送纸辊（图中未标注）， 由固定在框架 4的送纸电机（图中 未标注）驱动， 带动纸张等打印介质由打印垫板 5背面侧向正面方向输送， 并 沿打印垫板 5向上运动。
如图 2所示， 其为本发明打印机构的和带盒支撑机构的立体图。 其中， 所 述打印机构 2由打印头 20、 字车 21、 导向轴 25、 打印头输送机构组成， 所述 打印头输送机构包括打印头驱动电机 22、 打印头驱动电机齿轮 22a, 齿形带 23、 齿形带主动轮 24、 齿形带从动轮 24， （以下简称齿形带轮（24, 24，））。 其中， 所述打印头 20为针式打印头， 通过打印针击打色带， 将色带油墨推压 到打印介质， 形成图像或文字。 述打印头输送机构的打印头驱动电机齿轮 22a 固定在所述打印头驱动电机 22—端， 与所述打印头驱动电机 22—起旋转， 同 时， 所述打印头驱动电机齿轮 22a与齿形带轮 24啮合， 齿形带轮 (24、 24，)与 齿形带 23啮合。 所述打印头 20安装在字车 21上， 所述字车 21通过卡爪 21e 与所述齿形带 23咬合。从而将所述打印头驱动电机 22的转动，通过电机齿轮 22a, 齿形带轮（24, 24，）、 齿形带 23传递给字车 21 , 并通过所述字车 21带 动打印头 20水平往复移动。 这样， 所述打印头输送机构就将打印头驱动电机 22正反旋转转换成打印头 20的往复运动。 所述导向轴 25穿过字车 21， 其两 端支撑在框架 4的左右侧壁， 并与打印垫板 5平行，使打印头平行与打印垫板 5 , 并使它们之间保持一定间隙。
回到图 1 ,在所述带盒安装机构 3上设置有带盒支撑板 30, 所述带盒支撑 板 30通过支轴 40支撑在所述框架 4的左右侧壁上， 同时， 所述带盒支撑板 30能够以所述支轴 40为中心相对框架 4自由摆动。 如图 3所述， 在所述带盒 支撑板 30上还设置了带盒支撑板碰撞面 30b, 切换孔 30c， 卡槽 30d， 一同用 来与色带转换机构相配合， 实现带盒升高 /降低。
如图 1所示， 所述色带 6由带盒 60和带条 61组成。 带盒 61安装在所述 带盒支撑板 30上， 随带盒支撑板 30—起摆动。 带盒 60向前延伸的第一臂部 60a、 第二臂部 60b形成在带盒 60两侧边缘处， 从第一臂部 60a的端部引出带 条 61通过打印头 20与打印垫板 5之间的间隙， 进入第二臂部 60b， 带条循环 地卷绕在带盒内部， 通过色带驱动轴 31驱动带条卷绕齿轮（未图示）旋转， 实现带条的连续供给。 在带条 61的宽度方向（图 1的上下方向）， 并排形成多 条带条 61a、 61b, 例如并排地， 在带条 61上侧形成黑色带条 61a， 下侧形成 红色带条 61b， 而且， 通过摆动带盒 60, 可将所述带条 61a、 61b中的任一颜 色配置在与打印头 20相对的位置， 从而可以有选择地实现黑色或红色的彩色 打印。
在本实施例中， 当带条 61a (即最上排带条）与打印头 20相对时， 把此 时所述带盒支撑板 30的位置称为后文将要述及的初始位置， 把带条 61b与打 印头 20相对时带盒支撑板 30的位置当作后文将要述及的设定位置。
另外， 本实施例中的打印机， 还设置了用于升高 /降低带盒支撑板 30进而 实现色带 6中带条 61a、 61b切换的色带转换机构 7。 色带转换机构 7包括带 盒支撑机构和带盒切换机构。 其中， 所述带盒支撑机构包括托架 70、摆块 71、 摆块转轴 72、 摆块拉簧 74, 其中， 所述摆块 71通过所述摆块转轴 72在水平 方向摆动。所述带盒支撑机构用于支撑所述带盒支撑板， 并在带盒切换机构的 推动下摆动至不同的角度，对应地将所述带盒安装机构抬高或降低至不同的高 度进行色带的切换或复位。 所述带盒切换机构包括凸轮 73、 字车 21 , 所述凸 轮 73固定在所述字车 21上， 随打印头一起水平往复移动，推动所述带盒支撑 机构，使其将所述带盒支撑板摆动至不同的高度进行色带的切换。所述打印机 还包括控制装置 （图中未标注）， 用于根据要切换的颜色对应的所述打印头的 步数，控制所述打印头的移动。其具体的控制方法请参见文后打印控制方法描 述。 其中， 所述打印头移动的步数通过位置传感器 8来探测。 由于点阵式打印 机的位置传感器 8属于本领域技术人员公知的技术， 这里不再赘述。
下面结合图 2、 图 3、 图 4、 图 5分别说明构成色带转换机构的带盒支撑 机构和带盒切换机构之间的结构及配合关系。
带盒支撑机构请参见图 2所示，所述托架 70位于所述带盒支撑板 30的正 下面， 在托架 70的一侧设置有支撑边 70a， 当所述带盒支撑板 30位于初始位 置时， 带盒支撑板 30的底面搭接在托架支撑边 70a上， 所述托架 70用于支撑 带盒支撑板 30。 在与所述支撑边 70a同侧的托架 70上， 还设置有带盒支撑板 拉簧 76， 所述带盒支撑板拉簧 76的一端挂接在该托架 70的第一拉簧槽 70b 中， 另一端挂接在带盒支撑板 30的凹槽 30a (见图 6 )上， 通过所述带盒支撑 板拉簧 76的拉力 ,使带盒支撑板 30始终受到向下的拉力 , 从而使所述带盒支 撑板 30—直平稳地搭接在托架支撑边 70a上， 避免工作过程中因打印头的震 动可能引起的带盒支撑板 30上下摆动而造成的打印混色。
同时， 请参阅图 3所示， 其为图 1所示打印机的色带转换机构的立体图。 在所述托架 70的另一侧， 还设置有摆块 71、 摆块转轴 72、 摆块拉簧 74, 所 述摆块 71通过摆块转轴 72安装在托架 70上，并可绕该摆块转轴 72在水平面 内自由旋转。请参阅图 4所示，其为图 1所示打印机上的色带转换机构中带盒 支撑机构的立体图。 所述摆块拉簧 74, —端挂接在摆块槽 71a上， 一端挂接 在所述托架 70的第二拉簧槽 70c上，在所述摆块拉簧 74的拉力作用下， 所述 摆块 71具有在水平面内逆势针旋转的趋势。但是， 由于框架 4的侧壁 41的限 制， 使得所述摆块 71被所述侧壁 41挡住， 而无法继续逆时针旋转， 所述摆块 拉黄 74用于在所述带盒支撑机构不受所述带盒支撑板 30及所述带盒切换机构 的作用下， 将所述带盒支撑机构恢复至初始位置。 在本实施例中将此时摆块 71所处的角度称作后文将要述及的摆块的初始角度， 即图 4所示的位置。 在 所述摆块 71上还设置有三个台阶 71b，、 71c、 71d, 其中， 所述第一台阶 71b 的高度小于等于所述托架支撑边 70a的高度，所述第二台阶 71c的高度大于所 述托架支撑边 70a的高度，所述第三台阶 71d的高度大于所述第二台阶 71c的 高度。 当带盒支撑板 30位于上述初始位置时， 即， 带盒支撑板 30正好搭接在 所述托架支撑边 70a上时， 此时， 所述摆块 71位于上述初始角度， 此时第一 台阶 71b位于带盒支撑板 30正下方。当所述带盒支撑板 30位于所述设定位置 时， 即所述带盒 60被摆动至设定高度时， 此时， 所述摆块 71将旋转至一定角 度， 将所述第二台阶 71c旋转至该带盒支撑板 30的正下方， 这样， 由于所述 第二台阶 71c的高度大于所述托架支撑边 70a的高度， 因此， 所述带盒支撑板 30搭接在所述第二台阶 71c上， 此时， 所述第三台阶 71d将正好卡入所述带 盒支撑板 30的卡槽 30d内。本实施例将此时摆块 71所处的位置称作所述摆块 71的第二设定角度， 此时， 所述带盒支撑板 30摆动的高度正好是所述第二带 条 61b与所述打印头 20相对应的位置， 即设定位置。 此外， 在所述摆块 71 上还设置有摆块碰撞面 71e, 用于与色带转换机构接触后， 在所述色带转换机 构的碰撞推动下， 通过摆块 71旋转而实现带盒升高 /降低。
带盒切换机构请参阅图 3所示，在所述字车 21靠近摆块 71的一侧，设有 凸轮 73、 转轴 73a、 转轴槽 21b, 其中， 所述凸轮 73通过转轴 73a安装在字 车转轴槽 21b中， 使凸轮 73可以绕转轴 73a在垂直面内自由转动。 同时， 在 所述凸轮 73上还设置了凸轮第一碰撞面 73b， 与所述带盒支撑板碰撞面 30b 平行相对， 用于与所述带盒支撑板碰撞面 30b接触， 将所述带盒支撑板 30抬 至设定高度。 此外， 在所述凸轮 73上还设有凸轮第二碰撞面 21a, 与所述摆 块碰撞面 71e平行相对， 用于与所述摆块碰撞面 71e接触碰撞， 并推动该摆块 71顺时针旋转一定角度，实现所述摆块 71在初始角度、第二位置之间的切换。 请参阅图 5所示，其为图 1所示打印机上的色带转换机构中带盒切换机构的立 体图。 在所述带盒切换机构上还设有凸轮拉簧 75 , 所述凸轮拉簧 75的一端挂 接在所述字车 21的拉簧槽 21c上，其另一端挂接在所述凸轮 73的底部 73c上， 用于在所述凸轮拉簧 75的拉力作用下，所述凸轮 73总有在垂直面内顺时针旋 转的趋势。 但是， 由于字车 21的侧壁 21d的限制， 使得所述凸轮 73被所述字 车 21的侧壁 21d挡住， 而无法继续顺时针旋转。 因此， 在没有外力的作用下， 凸轮 73能够平衡在如图 5所示的位置。
下面结合上述优选实施例详细说明通过带盒支撑机构和带盒切换机构的 相互作用完成色带切换的过程。
请参见图 6所示，其为图 1所示打印机上的字车运动区域示意图。在本实 施例中， 将字车 21往返运动的区域划分为打印区域 P、 切换区域 Q， 其中， 所述切换区域 Q又可划分成第一切换区域 Ql、 第二切换区域 Q2、 第三切换 区域 φ。
所述色带切换过程的前提是带盒支撑板 30位于上述初始位置， 即打印头 20与黑色带条 61a位置相对应。 为实现带盒 60的升高， 所述打印头输送机构 带动字车 21由打印区域 P向切换区域 Q运动。第一步，字车 21由打印区域 P 向第一切换区域 Q1运动， 当字车 21运动至打印区域 P与第一切换区域 Q1 的交界点时，请结合图 3所示，此时，所述字车 21旁边的凸轮第一碰撞面 73b 正好与所述带盒支撑板碰撞面 30b相接触。 并随着所述字车 21在第一切换区 域 Q1间运动时， 所述凸轮第一碰撞面 73b推挤带盒支撑板碰撞面 30b, 并在 推力作用下将所述带盒支撑板 30抬高，并随着所述字车 21运动至所述第一切 换区域 Q1与第二切换区域 Q2交界点处时， 所述凸轮第一碰撞面 73b将所述 带盒支撑板 30抬高至最高位置，该高度大于所述摆块 71的第三台阶 71d的高 度。
第二步， 所述字车 21进入第二切换区域 Q2并继续向前移动， 在所述第 二切换区域 Q2内 , 所述带盒支撑板 30在所述凸轮 73的支撑下始终保持在上 述最高位置。 所述凸轮第二碰撞面 21a与所述摆块碰撞面 71e相接触， 并在所 述字车 21的继续推移下， 挤压摆块碰撞面 71e， 所述摆块 71在所述字车 21 的推动下， 克服摆块拉簧 74的拉力作用， 顺势针旋转。 当字车 21移动至第二 切换区域 Q2与第三区域 Q3的交界点处时，所述摆块 71正好转动至设定角度， 此时， 所述摆块 71的第二台阶 71c正好转至所述带盒支撑板 30的正下方。
第三步， 所述字车 21由第二切换区域 Q2进入第三切换区域 Q3， 随着凸 轮 73卡入带盒支撑板切换孔 30c内 ,所述带盒支撑板 30因没有凸轮第一碰撞 面 73b的支撑而下降， 此时， 所述摆块 71的第三台阶 71d正好卡入带盒支撑 板卡槽 30d中， 此时， 所述带盒支撑板 30将搭接在所述摆块 71的第二台阶 71c上， 即摆块 71在凸轮 73的推动下， 转动至第二位置。 所述带盒支撑板 30 被设置到设定位置， 此时， 所述色带的带条 61b被切换到与打印头 20相对位 置上。 同时， 由于所述摆块 71的第三台阶 71d被卡入带盒支撑板卡槽 30d中， 即使摆块 71在摆块拉簧 74的拉力作用下有逆势针旋转趋势，也因带盒支撑板 卡槽 30d的限制被制止， 因此所述摆块 71可稳定在第二位置， 即带盒支撑板 30也因此可稳定在设定位置上。
第四步， 所述字车 21由第三切换区域 Q3向第二切换区域 Q2运动， 带盒 支撑板切换孔 30c边沿与所述凸轮 73相互挤压，由于凸轮拉簧 75拉力远小于 带盒支撑板切换孔 30c边沿的挤压力， 所述凸轮 73克服凸轮拉簧 75作用， 逆 时针旋转脱离所述带盒支撑板切换孔 30c的限制， 所述字车 21由第三切换区 域 Q3往回移动到第二切换区域 Q2、 第一切换区域 Ql。 此时， 由于所述带盒 支撑板 30仍然被所述摆块 71的第二台阶 71c支撑着， 所以带盒支撑板 30依 然稳定在设定位置上。 所述带盒转换过程结束， 字车 21由切换区域 Q运动到 打印区域 P， 执行打印任务。
下面结合上述优选实施例详细说明通过带盒支撑机构和带盒切换机构的 相互作用完成色带的复位过程。
此工作过程的前提是带盒位于所述设定位置， 即红色带条 61b 与打印头 20相对。 为了降低带盒的高度， 所述打印头输送机构带动字车 21由打印区域 P向切换区域 Q运动。第一步，所述字车 21由打印区域 P向第一切换区域 Q1 运动， 请结合图 3所示， 所述字车 21在第一切换区域 Q1间运动时， 所述凸 轮第一碰撞面 73b会与所述带盒支撑板碰撞面 30b相接触， 并随着所述字车 21的继续向前运动， 所述凸轮第一碰撞面 73b推挤带盒支撑板碰撞面 30b, 并 在推力作用下将所述带盒支撑板 30抬高。随着所述字车 21运动至所述第一切 换区域 Q1与第二切换区域 Q2交界点处时， 所述凸轮第一碰撞面 73b将所述 带盒支撑板 30抬高至最高位置，该高度大于所述摆块 71的第三台阶 71d的高 度， 因此摆块 71的第三台阶 71d脱离带盒支撑板卡槽 30d限制。 同时， 所述 凸轮第二碰撞面 21a刚好与所述摆块碰撞面 71e相接触，但由于没有发生作用， 因此， 此时在所述摆块拉簧 74的拉力作用下， 所述摆块 71逆时针旋转， 直到 恢复到上述初始角度； 第二步， 所述字车 21 由第一切换区域 Q1向所述打印 区域 P运动， 所述凸轮第一碰撞面 73b脱离带盒支撑板碰撞面 30b。 使得所述 带盒支撑板 30随之下降， 直到搭接在所述托架支撑边 70a上， 此时， 所述带 盒支撑板 30恢复到初始位置， 所述色带带条 61与打印头 20的对应位置也因 此由带条 61b恢复到 61a位置。 带盒复位工作完成。 之后， 所述字车 21可继 续由所述切换区域 Q向打印区域 P运动， 执行打印任务。
此外， 本发明提供的打印机还可支持两条以上多色带的转换， 请参阅图 7 所示， 为本发明用于多色带切换的带盒支撑机构实施例一的立体图 ,对于沿所 述色带宽度方向从上至下分别有黑、 紫、 绿、 红四种颜色的色带， 对应的所述 带盒支撑机构的台阶数有五个，如图 7示， 与所述颜色相对应的台阶分别为第 一台阶 71b、 第二台阶 71g、 第三台阶 71f、 第四台阶 71c， 以及一个最高的第 五台阶 71d， 用于限位。 其中所述第一台阶 71b为平面时， 当所述色带位于初 始位置时， 即黑色带条对应所述打印头， 此时， 所述第一台阶 71b位于所述带 盒支撑板 30的下方。在切换区域，在所述凸轮与所述带盒支撑板的碰撞面 30b 接触推动下， 所述凸轮将所述带盒支撑板 30抬起至高于所述带盒支撑机构的 位置， 并在最高位置维持一段距离， 使所述摆块 71的最高第五台阶 71d旋转 进入卡槽 30d， 同时所述凸轮也快速落入切换孔 30c。 之后， 随着所述凸轮的 继续向前移动， 推动所述摆块 71旋转至所需的设定角度， 此时， 所述带盒支 撑板 30被对应地台阶支撑在所需地设定高度， 实现色带地切换。
其中所述第一台阶 71b还可以为斜坡面， 如图 8示， 此时， 当所述色带位 于初始位置时， 即黑色带条对应所述打印头， 所述第一台阶 71b与所述带盒支 撑板 30无接触。 凸轮抬起带盒支撑板到达最高位置后， 立即落入切换孔 30c。 此时，所述摆块 71的最高第五台阶 71d利用其坡面支撑着所述带盒支撑板 30。 并随着所述凸轮的继续向前移动， 所述第五台阶进入所述卡槽 30d中。 之后， 再根据用户的需求， 所述凸轮推动所述摆块 71旋转至所需的设定角度，此时， 所述带盒支撑板 30被对应地台阶支撑在所需地设定高度， 实现色带地切换。
对于多色带的复位，与上述两种颜色的色带的优选实施例中通过带盒支撑 机构和带盒切换机构的相互作用完成色带的复位过程雷同， 这里不再赘述。
基于上述思想，本发明还提供了一种打印控制方法， 能够在驱动电机的转 动下带动所述打印头在打印区域、切换区域两个区域往复移动； 所述方法还包 括：
所述带盒切换机构进入切换区域，接触所述带盒安装机构， 并将该安装机 构抬高至脱离于带盒支撑机构的位置后 ,
所述带盒切换机构继续向前移动，接触所述带盒支撑机构并推动该支撑机 构转动至不同的角度，使得该带盒支撑机构支撑所述带盒安装机构至不同高度 进行切换； 或
所述带盒切换机构不再施加作用力于该带盒支撑机构，使得该支撑机构在 所述复位机构的作用下进行复位。
其中， 当所述带盒支撑机构在初始角度时，对应所述带盒支撑板位于初始 位置，所述带盒切换机构将所述带盒支撑板抬高至脱离于所述带盒支撑机构的 位置后，继续前进推动所述带盒支撑机构转动至设定角度，以实现色带的切换； 当所述带盒支撑机构在设定角度时 , 对应所述带盒支撑板位于设定位置 , 所述带盒切换机构将所述带盒支撑板抬高至脱离于所述带盒支撑机构的位置 后返回， 所述带盒支撑结构在弹性元件的作用下恢复至初始位置， 实现色带的 复位。
请参阅图 9所示， 为本发明打印控制方法的实施例一的流程图 ,具体的切 换方法包括以下步骤：
步骤 901 : 将打印机初始化。
步骤 902: 判断是否收到控制指令？ 如果是， 执行步骤 903; 否则， 重复 步骤 902。 其中， 所述控制指令优选为触发该打印机进行新任务打印的数据信 息， 所述打印机在收到该控制指令后， 进行下面的切换或打印。
步骤 903 ~步骤 904: 计算新颜色所对应的打印头移动的步数， 并判断该 步数是否等于当前颜色对应的打印头的步数？ 如果不相等， 执行步骤 905; 否 则， 执行步骤 906。
步骤 905: 所述打印头进入切换区域进行色带的切换。 如表 1所示， 为方 便说明， 将切换区域 Q 据对应的色带颜色划分为四个区域， 即距离所述打 印区域 P由近至远依次为： 抬高区域 Ql、 红色切换区域 Q2、 紫色切换区域 Q3、 绿色切换区域 Q4。 所述打印区域 P与所述切换区域 Q的交界点设为 P2, 抬高区域 Q1与红色切换区域 Q2交点设为 P3 , 红色切换区域 Q2与紫色切换 区域 Q3交点为 P4， 紫色切换区域 Q3与绿色切换区域 Q4交点为 P5， 绿色切 换区域端点设为 P6。请参阅图 10 所述，所述凸轮从打印区域 P向切换区域 Q 移动， 当移动至所述 P2点时， 所述凸轮与所述带盒支撑板 30的碰撞面接触， 当凸轮进入所述抬高区域 Q1 时， 所述凸轮将所述带盒支撑板 30抬高， 直到 所述凸轮移动至 P3的位置时， 所述带盒支撑板 30被抬高至最高位置， 此时， 黑色与所述打印头位置相对。之后， 随着所述凸轮继续向前移动至不同的切换 区域， 并到达该区域的端点位置时， 对应地可将所述带盒支撑板 30抬高至相 应的位置， 此时， 所述色带即被切换到该区域所对应的颜色。 所述打印机的色 带切换过程与上述图 6中的描述雷同， 这里不再赞述。 颜色 步数 位置 黑色 10 P 3 红色 11 P 4 紫色 12 P 5 绿色 13 P 6 表 1
步骤 906: 所述打印头返回至打印区域 P进行打印。 具体打印方法属现有 技术， 这里不再赘述。
以上所述的本发明实施方式， 并不构成对本发明保护范围的限定。任何在 本发明的精神和原则之内所作的修改、等同替换和改进等， 均应包含在本发明 的保护范围之内。

Claims

权 利 要 求
1、 一种打印机， 包括打印头、 能够带动所述打印头往复移动的打印头输 送机构、连接打印头与打印头输送机构的字车、装有多色色带的带盒并能带动 该带盒摆动的带盒安装机构，其特征在于， 所述打印头的运动区域由一个打印 区域和一个切换区域组成，所述打印机还包括：带盒支撑机构、带盒切换机构、 及复位机构， 其中：
所述带盒支撑机构位于所述切换区域， 用于在转动至不同的角度时，对应 地将所述带盒安装机构支撑至不同的高度进行色带颜色的切换；
所述带盒切换机构固定在所述字车上，在所述切换区域， 用于将所述带盒 安装机构抬高至脱离于带盒支撑机构的位置，和推动所述带盒支撑机构转动至 不同的角度；
所述复位机构固定在所述带盒支撑机构上，用于当所述带盒支撑机构不再 与所述带盒安装机构和所述带盒切换机构接触时 , 将所述带盒支撑机构复位。
2、 如权利要求 1所述的打印机， 其特征在于，
所述带盒安装机构包括用于支撑带盒的带盒支撑板，在所述带盒支撑板上 设有支撑板碰撞面；
所述带盒切换机构包括凸轮，在所述凸轮上设有与上述支撑板碰撞面相对 的第一碰撞面，在上述两个碰撞面的接触下， 随着所述凸轮的向前移动将所述 带盒支撑板抬高至脱离于所述带盒支撑机构的位置。
3、 如权利要求 2所述的打印机， 其特征在于，
所述带盒支撑板上还设有切换孔，所述凸轮将所述带盒支撑板维持至脱离 于所述带盒支撑机构的位置后， 所述凸轮随着继续向前运动进入该切换孔中 , 并在该切换孔中通过继续向前移动推动所述带盒支撑机构转动实现切换。
4、 如权利要求 3所述的打印机， 其特征在于， 所述带盒支撑板上还设有 卡槽， 用于所述带盒支撑机构当转动至设定角度后， 卡入所述卡槽中， 以将所 述带盒支撑机构限制在设定角度。
5、 如权利要求 4所述的打印机， 其特征在于， 所述带盒支撑机构包括： 摆块、 摆块转轴， 所述摆块可绕所述摆块转轴水平摆动；
所述摆块上还设有台阶， 与所述卡槽配合， 能够在所述摆块转动至设定角 度时， 有相应的台阶卡入所述卡槽中， 对应地， 将所述带盒支撑板支撑至需要 的颜色与打印头对应的位置上。
6、 如权利要求 1所述的打印机， 其特征在于， 所述复位机构包括： 复位 弹性元件， 用于将所述带盒支撑机构恢复至初始位置。
7、 如权利要求 2所述的打印机， 其特征在于， 所述带盒切换机构还包括： 转轴、 字车转轴槽， 所述凸轮通过转轴安装在字车转轴槽中， 使该凸轮可 以随所述转轴在垂直面内自由转动； 及
凸轮弹性元件， 所述弹性元件固定在所述凸轮与所述字车之间，在所述凸 轮弹性元件的作用下， 使所述凸轮恢复至初始位置。
8、 如权利要求 2所述的打印机， 其特征在于， 所述带盒支撑机构还包括： 托架， 所述托架支撑在所述带盒安装机构的下方； 在所述托架的一端还设有托 架支撑边， 在带盒位于初始位置时， 与所述带盒支撑板的底面搭接。
9、 如权利要求 8所述的打印机， 其特征在于， 所述打印机还包括： 带盒 支撑板弹性元件 , 固定在所述托架和所述带盒支撑板之间。
10、 如权利要求 1所述的打印机， 其特征在于， 所述打印机还包括： 控制 装置，根据要切换的颜色所对应的所述打印头的运动步数，控制所述打印头的 移动。
11、 一种打印控制方法， 其特征在于， 打印机的打印头运动在由一个打印 区域和一个切换区域组成的运动区域内， 当切换打印颜色时， 所述打印头带动 带盒切换机构由打印区域进入切换区域， 接触带盒安装机构， 并且，
将所述带盒安装机构抬高至脱离于该打印机的带盒支撑机构的位置后，所 述带盒切换机构继续向前移动，接触所述带盒支撑机构并推动该带盒支撑机构 转动至不同的角度，以相应地使该带盒支撑机构支撑所述带盒安装机构至不同 高度； 或
所述带盒切换机构将所述带盒安装机构抬高至脱离于所述带盒支撑机构 的位置后， 不再接触所述带盒支撑机构， 以使所述带盒支撑机构恢复至初始角 度。
12、 如权利要求 11所述的打印控制方法， 其特征在于，
所述带盒支撑机构转动到初始角度时 ,对应支撑所述带盒安装机构于初始 位置；
所述带盒切换机构推动所述带盒支撑机构转动至不同的角度具体为： 所述打印头继续向前移动设定步数，带动所述带盒切换机构推动所述带盒 支撑机构转动至设定角度；
所述带盒切换机构不再接触所述带盒支撑机构具体为：
13、 如权利要求 11或 12所述的打印控制方法， 其特征在于， 该方法还包 括：
判断新颜色对应的打印头的步数与当前颜色对应的所述打印头的步数是 否相等， 如果相等， 则直接打印； 否则， 执行所述切换动作。
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JP4874401B2 (ja) 2012-02-15
KR101197449B1 (ko) 2012-11-06
KR20090101301A (ko) 2009-09-24
CN101224678A (zh) 2008-07-23
CN101224678B (zh) 2012-06-06
EP2105316B1 (en) 2016-07-27
US8246260B2 (en) 2012-08-21
EP2105316A4 (en) 2011-12-14
EP2105316A1 (en) 2009-09-30
JP2010516491A (ja) 2010-05-20
US20100221053A1 (en) 2010-09-02

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