EP2353875B1 - Drucker - Google Patents

Drucker Download PDF

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Publication number
EP2353875B1
EP2353875B1 EP20100196793 EP10196793A EP2353875B1 EP 2353875 B1 EP2353875 B1 EP 2353875B1 EP 20100196793 EP20100196793 EP 20100196793 EP 10196793 A EP10196793 A EP 10196793A EP 2353875 B1 EP2353875 B1 EP 2353875B1
Authority
EP
European Patent Office
Prior art keywords
recess
platen roller
platen
latch member
fitted
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.)
Not-in-force
Application number
EP20100196793
Other languages
English (en)
French (fr)
Other versions
EP2353875A1 (de
Inventor
Akio Naito
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Seiko Instruments Inc
Original Assignee
Seiko Instruments Inc
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 Seiko Instruments Inc filed Critical Seiko Instruments Inc
Publication of EP2353875A1 publication Critical patent/EP2353875A1/de
Application granted granted Critical
Publication of EP2353875B1 publication Critical patent/EP2353875B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B41J11/00—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/02—Platens
    • B41J11/04—Roller platens
    • 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
    • B41J11/00—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/24—Detents, brakes, or couplings for feed rollers or platens
    • 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
    • B41J15/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, specially adapted for supporting or handling copy material in continuous form, e.g. webs
    • B41J15/04—Supporting, feeding, or guiding devices; Mountings for web rolls or spindles
    • B41J15/042—Supporting, feeding, or guiding devices; Mountings for web rolls or spindles for loading rolled-up continuous copy material into printers, e.g. for replacing a used-up paper roll; Point-of-sale printers with openable casings allowing access to the rolled-up continuous copy material

Definitions

  • the present invention relates to a printer in which a platen roller and a recording head are separably combined with each other.
  • printers in which a recording head and a platen roller held in contact with the recording head are provided inside a casing, and in which the recording head performs recording onto a recording sheet sent out by the platen roller.
  • the recording head and the platen roller remain in contact with each other inside the casing. Thus, workability is poor.
  • the recording head and the platen roller can be spaced apart from each other so as to be exposed to an outside of the casing.
  • the recording head includes a plurality of recording elements (heat-generating elements or the like), and hence it is preferred that the recording head be fixed on a casing side in order not to impair reliability of electrical connections into which recording signals for selectively driving the recording elements are input.
  • the platen roller be spaced apart from the recording head so as to be exposed to the outside, with the recording head being fixed on the casing side.
  • a printer which includes a regulating member and a stationary frame, in which a platen roller can be easily attached and detached with use of those members, and in which the platen roller can be retained with high reliability while the platen roller is prevented from being inadvertently disengaged at the time of mounting (refer to JP 4376816 B ).
  • the regulating member includes a connecting portion into which a shaft portion of the platen roller is fitted, and the regulating member is undisengageably combined with the platen roller through intermediation of the connecting portion. Meanwhile, the regulating member is rotatably combined coaxially with and relatively to the platen roller. Note that, regarding movement except the relative rotation, the regulating member moves integrally with the platen roller. Further, the regulating member is provided with a protrusion-like engagement portion.
  • the stationary frame is fixed to a base of a casing, and includes a first recess and a second recess.
  • the first recess is a recess for positioning the platen roller to a recordable position by bringing the platen roller into contact with the recording head when the shaft portion of the platen roller is inserted.
  • the second recess is a recess for retaining a protrusion of the stationary frame when the protrusion is inserted under a state in which the shaft portion of the platen roller is inserted in the first recess.
  • the shaft portion of the platen roller is inserted in the first recess and retained therein, and then the regulating member is rotated relatively to the platen roller and the protrusion is inserted into the second recess and retained therein. With this, at the recordable position at which the platen roller is held in contact with the recording head, the platen roller can be reliably retained.
  • the printer is designed so that the platen roller is less liable to be inadvertently disengaged.
  • the platen roller can be retained with high reliability.
  • the platen roller when the platen roller is detached, the regulating member is rotated relatively to the platen roller (rotated in a direction reverse to that in the above-mentioned case). Consequently, the protrusion is disengaged from the second recess, and then the shaft portion of the platen roller is disengaged from the first recess. In this manner, the platen roller can be detached.
  • the platen roller can be attached and detached with a simple manipulation of rotating the regulating member so that the protrusion is inserted into or disengaged from the second recess.
  • the printer is excellent in manipulation properties of attachment and detachment.
  • the printers be structured as simply as possible and components be designed to be small.
  • the platen roller for feeding the recording sheet is larger among the components of the printers, and hence occupies a large space in the printer.
  • downsizing of the printer is efficiently achieved through possible reduction of a diameter of the platen roller.
  • the connecting portion of the regulating member is coaxially fitted into the shaft portion of the platen roller. Accordingly, when the diameter of the platen roller is reduced, it is necessary to reduce an outer diameter of the connecting portion in accordance therewith.
  • it is structurally necessary to secure a certain outer diameter Accordingly, it is practically difficult to further reduce the diameter of the platen roller at present.
  • the present invention has been made in view of such circumstances. It is therefore an object of the present invention to provide a printer in which the attachment and detachment manipulation of the platen roller can be easily performed, in which the platen roller can be retained with high reliability at the time of attachment, and in which downsizing of the entire printer is easily achieved due to use of the platen roller smaller in diameter.
  • the present invention provides the following measures for achieving the above-mentioned object.
  • a printer 1 As illustrated in FIGS. 1 and 2 , a printer 1 according to this embodiment includes a platen unit 2 and a main unit 3 which are separably combined with each other and a casing 4 for accommodating a sheet roll R formed of a wound recording sheet P.
  • FIG. 1 is an overall side view of the printer 1 in a state in which the platen unit 2 and the main unit 3 are combined with each other.
  • FIG. 2 is an overall side view illustrating a state in which the platen unit 2 and the main unit 3 in the state illustrated in FIG. 1 have been separated from each other.
  • the casing 4 includes a base member 10 and a lid member 11 openably and closably (rotatably) coupled to the base member 10 through intermediation of a rotary shaft 12.
  • the base member 10 is made of a resin material or the like in a box shape and an upper side thereof is open so that the sheet roll R is accommodated therein.
  • the lid member 11 is made of a resin material as well as the base member 10, and functions to expose an opening of the base member 10 in an opened state and cover the opening of the base member 10 in a closed state. Note that, locking and unlocking of the lid member 11 is effected by attachment and detachment of the platen unit 2 and the main unit 3.
  • the lid member 11 is formed to extend outward beyond the base member 10 (to the left side of the drawing sheets of FIGS. 1 and 2 ), and the platen unit 2 is fixed to an inner surface of the extended part.
  • a distal end portion 11a of the lid member 11 extending outward beyond the base member 10 is curved downward, and covers a part of the platen unit 2 from the outside.
  • a manipulation lever 14 is rotatably coupled to a surface side of the lid member 11 through intermediation of a rotary shaft 13. Description of the manipulation lever 14 is made later.
  • the platen unit 2 includes: a platen frame 20 fixed to the inner surface of the lid member 11; a platen roller 21 for feeding the recording sheet P; rocking members 22 each including a bearing portion 22a for axially supporting the platen roller 21, the rocking members 22 being fixed to the platen frame 20 so as to be rockable under a state of axially supporting the platen roller 21; and a latch member 23 rotatably coupled to the rocking members 22.
  • FIG. 3 is a front view of the platen unit 2 in a state of being fixed to the inner surface of the lid member 11.
  • FIG. 4 is a side view of the platen unit 2 and the lid member 11, seen from a direction of the arrow A illustrated in FIG. 3 .
  • FIG. 5 is a top view of the platen unit 2 taken along the line B-B illustrated in FIG. 3 .
  • FIG. 6 is an outer appearance perspective view of the platen unit 2, seen from the platen frame 20 side.
  • the platen frame 20 is formed to have a lateral width slightly narrower than a lateral width of the lid member 11 and formed in a substantially plate-like shape.
  • the platen frame 20 is fixed so as to overlap the most part of the inner surface of the lid member 11 with fastening means such as a screw.
  • first stopper claw 20a protruding to the platen roller 21 side.
  • second stopper claw 20b protruding in a direction parallel to a platen axis L1 of the platen roller 21.
  • the platen roller 21 is a roller being made of an elastic material and extending along the platen shaft L1, and has both end portions from which a platen shaft 21 a projects. As described above, the platen roller 21 is axially supported by the rocking members 22.
  • the rocking members 22 are arranged in a manner of sandwiching the platen roller 21, and each has a root side rotatably coupled to a coupling pin 20c projecting in the direction parallel to the platen axis L1 from a corresponding side of the platen frame 20. With this, the rocking members 22 are rockable about the coupling pins 20c.
  • the bearing portions 22a are formed on distal end sides of the rocking members 22, and axially support the platen shaft 21 a projecting from both the end portions of the platen roller 21. With this, the platen roller 21 is axially supported by the rocking members 22 and coupled to the platen frame 20 through intermediation of the rocking members 22.
  • each of the rocking members 22 there is formed a rotary shaft portion 22b projecting to the platen roller 21 side along a rotary axis L2 that is non-coaxial with and parallel to the platen axis L1.
  • the rotary shaft portion 22b functions as a shaft portion to which a coupling plate 31 of the latch member 23 described later is rotatably fitted in a covering manner.
  • a driven gear 25 is fixed on one side of the platen shaft 21 a with one of the rocking members 22 being interposed between the driven gear 25 and the platen roller 21.
  • the driven gear 25 is rotated by a rotational force transmitted thereto when the platen unit 2 and the main unit 3 are combined with each other and the driven gear 25 meshes with a platen gear train 50 described later.
  • the platen roller 21 is capable of being rotated about the platen axis L1 in accordance with rotation of the driven gear 25 so as to feed the recording sheet P drawn out from the sheet roll R.
  • the latch member 23 is arranged below the platen roller 21, and includes a base portion 30 formed to have a length substantially the same as that of the platen roller 21, and the coupling plate 31 which is formed in a fan shape in plan view, provided continuously with each end portion of the base portion 30, and rotatably coupled to the rocking members 22.
  • the coupling plate 31 is partially formed in a ring shape, and this part is rotatably fitted to the above-mentioned rotary shaft portion 22b of each of the rocking members 22.
  • the latch member 23 is coupled to the rocking members 22 in a rotatable state about the rotary axis L2 that is non-coaxial with the platen axis L1.
  • a fixing pin (protrusion) 31 a projecting in the direction parallel to the platen axis L1 and being rotationally moved about the rotary axis L2 in accordance with rotation of the latch member 23, and an engaging protrusion 31 b projecting to the platen frame 20 side.
  • a distance from the rotary axis L2 to an outer periphery of the fixing pin 31 a is defined as a distance T (refer to FIG. 4 ), and set to be uniform irrespective of the rotation of the latch member 23.
  • FIG. 7 is a partially sectional perspective view of the platen unit 2 taken along the line C-C illustrated in FIG. 6 .
  • Each of the torsional springs 35 is arranged between the platen frame 20 and the latch member 23. Specifically, each of the torsional springs 35 is fitted in a covering manner to a supporting pin 20d formed on the platen frame 20 side, and has one end side fitted into a groove portion 20e formed on a root side of the supporting pin 20d and another end side held in back-to-back contact with the base portion 30 of the latch member 23 so as to urge the latch member 23. With this, the latch member 23 is maintained under a state of being urged to be rotated about the rotary axis L2 in the locking direction D1.
  • the first stopper claw 20a and the engaging protrusion 31 b function as a regulating member 36 for regulating the rotational amount of the latch member 23 urged by the torsional springs 35.
  • rocking members 22 may rock in the locking direction D1 together with the latch member 23 urged by the torsional springs 35, a rocking amount in the locking direction D1 is regulated because the rocking members 22 come into contact with the second stopper claw 20b formed on the platen frame 20 side. That is, prior to the combination of the platen unit 2 and the main unit 3, the platen roller 21 is designed not to be excessively moved to the distal end portion 11a side of the lid member 11.
  • release direction D2 a direction in which the fixing pin 31 a is disengaged from inside the corresponding one of the second recesses 46 described later, that is, in the direction of coming close to the platen frame 20.
  • the manipulation lever 14 functions as an open lever for disengaging the platen unit 2 and the main unit 3 from each other and achieving an opened state of the lid member 11.
  • the manipulation lever 14 is formed in a J-shape in side view, and includes a manipulation end 14a formed on a distal end side thereof positioned on the distal end portion 11a side of the lid member 11. Meanwhile, a proximal end side of the manipulation lever 14 is coupled to the lid member 11 through intermediation of the rotary shaft 13, and the claw portions 14b extend, on an inner surface side of the lid member 11, from the coupled portion to the latch member 23.
  • the claw portions 14b are held in contact with the base portion 30 while intruding into the recesses 30a formed in the base portion 30 (refer to FIG. 3 ).
  • the claw portions 14b are held in contact with the base portion 30, and hence, when the manipulation lever 14 is subjected to a pulling-up manipulation (opening manipulation) through intermediation of the manipulation end 14a, the manipulation lever 14 is rotated about the rotary shaft 13 so that the claw portions 14b press the base portion 30 to the platen frame 20 side. With this, the latch member 23 is rotated about the rotary axis L2 in the release direction D2 in which the fixing pin 31 a comes close to the platen frame 20.
  • the main unit 3 includes a stationary frame 40 fixed to the base member 10 and a thermal head (recording head) 42 fixed to the stationary frame 40 through intermediation of a head support body 41, and is arranged so as to face the platen unit 2.
  • FIG. 8 is an (upside down) side view of the main unit 3, seen from a direction of the arrow D illustrated in FIG. 2 .
  • the stationary frame 40 is formed in a C-shape in plan view of a frame body portion 40a and facing wall portions 40b provided continuously with both sides of the frame body portion 40a so as to face each other, and is fixed to the base member 10 with the fastening means such as a screw.
  • the thermal head 42 includes many heat-generating elements (not shown) aligned parallel to the platen axis L1, and is secured to a front surface of the head support body 41.
  • a flexible substrate (not shown) is connected to the thermal head 42 so that drive signals for selectively driving the heat-generating elements are input.
  • the head support body 41 is rockably fixed to the stationary frame 40. Between the head support body 41 and the frame body portion 40a, there are provided coil springs 43 for bringing, by urging the head support body 41, the thermal head 42 into pressure-contact with the platen roller 21 when the platen unit 2 and the main unit 3 are combined with each other. With this, at the time of printing, sheet feeding can be performed while printing is reliably performed on the recording sheet P.
  • a regulating pin 41 a is formed at each end of the head support body 41, and intrudes into a corresponding one of groove portions 44 formed on the stationary frame 40 side.
  • the head support body 41 is regulated in rocking amount so as not to excessively rock.
  • the bearing portion 22a of each of the rocking members 22 is disengageably fitted into a corresponding one of the facing wall portions 40b of the stationary frame 40.
  • the facing wall portions 40b each include a first recess 45 for retaining the platen roller 21 at a position of facing the thermal head 42, and the second recess 46 into which, after the bearing portion 22a is fitted into the first recess 45, the fixing pin 31 a is fitted due to the rotation of the latch member 23.
  • each of the rocking members 22 is not disengageable from inside the first recess 45 while the fixing pin 31 a is fitted in the second recess 46, and is disengageable from inside the first recess 45 after the fixing pin 31 a is disengaged from inside the second recess 46.
  • first recess 45 and the second recess 46 Detailed description is made of the first recess 45 and the second recess 46.
  • the first recess 45 is formed so that an inner periphery thereof partially hinders the rocking member 22 from being rotated about the coupling pin 20c while the bearing portion 22a and the fixing pin 31 a are respectively fitted in the first recess 45 and the second recess 46. With this, under a state in which the fixing pin 31 a is fitted in the second recess 46, it is impossible for the bearing portion 22a to be disengaged from inside the first recess 45.
  • FIG. 9 is an enlarged view of a vicinity of one of the rocking members 22 in the state illustrated in FIG. 1 , illustrating a state in which the bearing portion 22a is fitted in the first recess 45 and the fixing pin 31 a is fitted in the second recess 46.
  • the bearing portion 22a is hindered from rocking owing to interference of the inner periphery of the first recess 45.
  • the bearing portion 22a in order for the bearing portion 22a to be disengaged from inside the first recess 45 under the state in which the fixing pin 31 a is fitted in the second recess 46, the bearing portion 22a is required to be moved in a direction of an arrow D3, that is, an opening direction of the first recess 45.
  • the second recess 46 is formed so that an inner periphery thereof partially hinders the fixing pin 31 a from being moved in the direction of the arrow D3.
  • the second recess 46 is provided with an opening so as to allow the fixing pin 31 a to move about the rotary axis L2 in the release direction D2. Accordingly, by rotation of the latch member 23 about the rotary axis L2 in the release direction D2, the fixing pin 31 a can be easily disengaged from inside the second recess 46. After the fixing pin 31 a is disengaged from inside the second recess 46, the bearing portion 22a can be easily disengaged from inside the first recess 45.
  • the platen roller 21 can be separated from the stationary frame 40, that is, the platen unit 2 and the main unit 3 can be separated from each other.
  • the platen gear train 50 to mesh with the driven gear 25 is arranged on an outside of one of the facing wall portions 40b.
  • the platen gear train 50 is rotated by driving of a platen drive motor 51 fixed on a back surface side of the stationary frame 40, and functions to transmit a rotational force to the driven gear 25.
  • the platen gear train 50 is protected by a gear cover 52.
  • the sheet roll R is accommodated in the base member 10 and the platen unit 2 and the main unit 3 are combined with each other under a state in which the recording sheet P is drawn to the outside.
  • the lid member 11 is in the closed state of closing the opening of the base member 10 and is locked by the combination of the platen unit 2 and the main unit 3.
  • the lid member 11 does not enter the opened state.
  • the recording sheet P is in a state of being sandwiched between the platen roller 21 and the thermal head 42 pressed by the platen roller 21.
  • the thermal head 42 is activated simultaneously with driving of the platen drive motor 51.
  • the fixing pin 31 a is less liable to be disengaged from inside the second recess 46 even with inadvertent rotation of the latch member 23. Accordingly, also in this regard, the platen roller 21 can be retained with high reliability.
  • the latch member 23 is not in a state of being liable to be rotated in the release direction D2 in which the fixing pin 31a is disengaged from inside the second recess 46 by an urging force of the torsional spring 35. Accordingly, the fixing pin 31 a is less liable to be inadvertently disengaged from inside the second recess 46 during printing. Also in this regard, the platen roller 21 can be reliably retained.
  • the manipulation end 14a of the manipulation lever 14 is pulled up so that the manipulation lever 14 is rotated about the rotary shaft 13.
  • the claw portions 14b of the manipulation lever 14 press the base portion 30 of the latch member 23 to the platen frame 20 side with a force resisting the torsional springs 35.
  • the latch member 23 is rotated about the rotary axis L2 in the release direction D2 as illustrated in FIG. 10 , and the fixing pin 31 a is disengaged from inside each of the second recesses 46.
  • both the bearing portions 22a and the fixing pins 31 a enter a movable state in the direction of the arrow D3, that is, the opening direction of the first recess 45.
  • the lid member 11 enters an unlocked state.
  • both the bearing portion 22a and the fixing pin 31 a move in the direction of the arrow D3, that is, the opening direction of the first recess 45.
  • the bearing portion 22a starts to be gradually disengaged from inside the first recess 45.
  • the rocking member 22 appropriately rocks about the root side thereof, and the latch member 23 is appropriately rotated about the rotary axis L2.
  • the bearing portion 22a and the fixing pin 31 a smoothly move in the direction of the arrow D3 without being caught.
  • the bearing portion 22a and the fixing pin 31 a further move as illustrated in FIGS. 11 and 12 .
  • the bearing portion 22a can be completely disengaged from inside the first recess 45 as illustrated in FIG. 13 .
  • the engaging protrusion 31 b of the latch member 23 is engaged with the first stopper claw 20a on the platen frame 20 side.
  • the platen unit 2 and the main unit 3 are disengaged from each other.
  • the platen roller 21 can be detached from the thermal head 42.
  • replacement of the sheet roll R, various maintenance operations, and the like can be performed.
  • the recording sheet P is pulled out by a certain length in advance.
  • the lid member 11 is closed, and the fixing pin 31 a is brought into contact with the facing wall portion 40b of the stationary frame 40 as illustrated in FIG. 13 .
  • the lid member 11 is further closed from this state, and the bearing portion 22a is inserted into the first recess 45 as illustrated in FIG. 12 .
  • the fixing pin 31 a moves in accordance with closing movement of the lid member 11 while being held in contact with the facing wall portion 40b of the stationary frame 40.
  • the latch member 23 is rotated about the rotary axis L2 in the release direction D2 with the force resisting the torsional springs 35.
  • the engaging protrusion 31 b enters a state of being spaced apart from the first stopper claw 20a.
  • the rocking member 22 rocks in a direction of being spaced apart from the second stopper claw 20b, and hence the bearing portion 22a is easily and smoothly inserted into the first recess 45.
  • both the bearing portion 22a and the fixing pin 31 a can be moved while being held in contact with the facing wall portion 40b of the stationary frame 40. After that, as illustrated in FIG. 10 , the bearing portion 22a can be fitted into the first recess 45. Then, when the lid member 11 is still further closed from this state, as illustrated in FIG. 9 , the fixing pin 31 a is automatically inserted and fitted into the second recess 46. In other words, the latch member 23 is urged by the torsional springs 35, and hence, when reaching an opening of the second recess 46, the fixing pin 31a is automatically fitted into the second recess 46.
  • the bearing portion 22a can be set to be undisengageable from inside the first recess 45. Further, the lid member 11 can be locked in the closed state. In other words, the state illustrated in FIG. 1 can be achieved.
  • the attachment and detachment manipulation of the platen roller 21 can be easily performed with such a simple manipulation that the bearing portion 22a is fitted into or disengaged from inside the first recess 45, and that the fixing pin 31 a is fitted into or disengaged from inside the second recess 46 due to rotational movement of the latch member 23. Accordingly, the platen roller 21 and the thermal head 42 (platen unit 2 and the main unit 3) can be quickly combined with or quickly separated and disengaged from each other.
  • the latch member 23 is urged by the torsional springs 35, and hence the fixing pin 31 a can be smoothly fitted into the second recess 46 in a short period of time after the bearing portion 22a is fitted into the first recess 45. Accordingly, the platen roller 21 can be more efficiently attached.
  • the platen roller 21 when the platen roller 21 is attached after the platen unit 2 and the main unit 3 are combined with each other, unless the fixing pin 31 a is intentionally disengaged from inside the second recess 46, the bearing portion 22a is not disengaged from inside the first recess 45. Thus, the platen roller 21 can be retained with high reliability. Accordingly, feeding of and printing onto the recording sheet P can be reliably performed, and hence reliability of the printer 1 can be enhanced.
  • the latch member 23 is coupled to the rocking members 22 under a state of being rotatable about the rotary axis L2 that is non-coaxial with the platen axis L1 of the platen roller 21.
  • the rotary axis L2 of the latch member 23 is coaxial with the platen axis L1
  • individual and free designing of the platen roller 21 and the latch member 23 is less liable to have influence on the counterpart. Accordingly, a degree of freedom in design can be enhanced.
  • a size, a shape, and the like of the platen roller 21 are less liable to have influence on strength or movement of the latch member 23, and hence the platen roller 21 can be reduced in diameter. Accordingly, the printer can be easily downsized as a whole.
  • the latch member 23 is rotatably fitted in a covering manner to the rotary shaft portion 22b formed on the rocking member 22.
  • backlash and the like are less liable to be generated and the latch member 23 is smoothly rotated.
  • the fixing pin 31a can be smoothly fitted into or disengaged from inside the second recess 46 almost without being caught, and hence the attachment and detachment manipulation of the platen roller 21 can be smoothly performed.
  • the rotary shaft portion 22b projects to the platen roller 21 side, and hence the latch member 23 can be coupled to the rocking members 22 under a state of being positioned on the same side as that of the platen roller 21. If the latch member 23 is positioned on the side opposite to the platen roller 21 with the rocking members 22 being interposed therebetween, it is necessary to take a thickness of the rocking members 22 into consideration. Thus, a length of the printer 1 parallel to the platen axis L1 is liable to be elongated in the lateral width direction. However, the latch member 23 may be positioned on the same side as that of the platen roller 21, and hence the printer 1 is easily downsized without such a risk.
  • the lid member 11 can be opened and closed in conjunction with the attachment and detachment manipulation of the platen roller 21, and hence the printer 1 is easy to use.
  • the recording sheet P drawn out from the sheet roll R can be easily set between the platen roller 21 and the thermal head 42.
  • the locking and unlocking of the lid member 11 is performed simultaneously with the attachment and detachment of the platen roller 21.
  • the latch member 23 can be rotated through intermediation of the manipulation lever 14, and hence the attachment and detachment manipulation of the platen roller 21 can be more easily performed.
  • the manipulation lever 14 is provided on the lid member 11, and hence the lid member 11 can be opened and closed with a series of manipulations simultaneously with the manipulation of the manipulation lever 14, which leads to enhancement of manipulation properties.
  • the casing 4 including the base member 10 and the lid member 11 is not essential, and hence is not required to be provided. That is, functions as a printer can be sufficiently exerted only with the main unit 3 and the platen unit 2.
  • the rotary shaft portions 22b of the rocking members 22 are formed so as to project to the platen roller 21 side, this should not be construed restrictively.
  • the rotary shaft portions 22b may be formed so as to project to the outside opposite to the platen roller 21 side.
  • the latch member 23 is coupled to the rocking members 22 under a state of being positioned on the side opposite to the platen roller 21 side with the rocking members 22 being interposed therebetween, the similar actions and effects can be obtained also in this case.
  • the structure as described above in this embodiment is preferred.
  • lengths of the rocking members 22 or positions and sizes of the rotary shaft portions 22b may be set so that the coupling plates 31 of the latch member 23 are arranged between the platen roller 21 and the platen frame 20. With this, the lateral width of the printer 1 can be further reduced, and hence the printer 1 can be downsized.

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  • Handling Of Sheets (AREA)
  • Handling Of Continuous Sheets Of Paper (AREA)

Claims (6)

  1. Drucker (1), in dem ein Aufzeichnungskopf (42) und eine Schreibwalze (21) trennbar miteinander kombiniert sind, umfassend:
    ein Schwenkelement (22), das einen Lagerabschnitt (22a) zum axialen Stützen der Schreibwalze umfasst und an einem Schreibwalzenrahmen (20) befestigt ist, so dass es in einem Zustand, in dem es die Schreibwalze axial stützt, schwenkbar ist;
    ein Verriegelungselement (23), das an das Schwenkelement in einem Zustand gekoppelt ist, in dem es um eine Drehachse (L2) drehbar ist, die zu einer Schreibwalzenachse (L1) der Schreibwalze nicht koaxial und parallel liegt;
    einen Fortsatz (31a), der an dem Verriegelungselement vorgesehen ist und sich drehend um die Drehachse in Übereinstimmung mit der Drehung des Verriegelungselements bewegt; und
    einen feststehenden Rahmen (40), an dem der Aufzeichnungskopf befestigt ist, wobei:
    der feststehende Rahmen umfasst:
    eine erste Vertiefung (45), in der der Lagerabschnitt lösbar eingesetzt werden kann, wobei die erste Vertiefung die Schreibwalze an einer Position halten kann, in der sie dem Aufzeichnungskopf zugewandt ist, und
    eine zweite Vertiefung (46), in die, nachdem der Lagerabschnitt in die erste Vertiefung eingesetzt wurde, der Fortsatz mittels Drehung des Verriegelungselements lösbar eingesetzt werden kann; und
    der Lagerabschnitt von der Innenseite der ersten Vertiefung nicht lösbar ist, während der Fortsatz in die zweite Vertiefung eingesetzt wird, und von der Innenseite der ersten Vertiefung lösbar ist, nachdem der Fortsatz von der Innenseite der zweiten Vertiefung gelöst wurde.
  2. Drucker nach Anspruch 1, wobei
    das Schwenkelement einen Drehwellenabschnitt (22b) umfasst, der zu der Schreibwalzenseite entlang der Drehachse vorragt; und
    das Verriegelungselement in einer bedeckenden Weise an dem Drehwellenabschnitt drehbar aufgesetzt ist.
  3. Drucker nach Anspruch 1 oder Anspruch 2, des Weiteren umfassend ein Presselement (35), das zwischen dem Schreibwalzenrahmen und dem Verriegelungselement vorgesehen ist, um das Verriegelungselement so anzupressen, dass es das Verriegelungselement in eine Richtung dreht, in der der Fortsatz einer Innenseite der zweiten Vertiefung nahe kommt.
  4. Drucker nach Anspruch 3, des Weiteren umfassend ein Regulierungsmittel (36) zum Regulieren eines Drehungsausmaßes des Verriegelungselements, das von dem Presselement angepresst wird.
  5. Drucker nach einem der vorangehenden Ansprüche, des Weiteren umfassend:
    ein Basiselement (10) zum Aufnehmen einer Blattrolle (R), die aus einem gewickelten Aufzeichnungsblatt (P) gebildet ist, das zwischen dem Aufzeichnungskopf und der Schreibwalze zugeführt wird; und
    ein Deckelelement (11), das öffnungs- und schließfähig an das Basiselement gekoppelt ist, wobei:
    der feststehende Rahmen an dem Basiselement befestigt ist; und
    der Schreibwalzenrahmen an dem Deckelelement befestigt ist.
  6. Drucker nach Anspruch 5, wobei das Deckelelement einen Bedienungshebel (14) zum Drehen des Verriegelungselements um die Drehachse umfasst.
EP20100196793 2010-02-02 2010-12-23 Drucker Not-in-force EP2353875B1 (de)

Applications Claiming Priority (1)

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JP2010021537A JP5536480B2 (ja) 2010-02-02 2010-02-02 プリンタ

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EP2353875A1 EP2353875A1 (de) 2011-08-10
EP2353875B1 true EP2353875B1 (de) 2012-11-07

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Publication number Priority date Publication date Assignee Title
JP5986787B2 (ja) * 2012-04-13 2016-09-06 富士通コンポーネント株式会社 プリンタ装置
JP5927084B2 (ja) * 2012-08-28 2016-05-25 富士通コンポーネント株式会社 プリンタ装置
JP6083258B2 (ja) * 2013-02-28 2017-02-22 セイコーエプソン株式会社 反転ユニットを備えた媒体処理装置
JP6196550B2 (ja) * 2013-12-26 2017-09-13 富士通コンポーネント株式会社 プリンタ装置及びプリンタ装置の制御方法
US9493017B2 (en) 2015-02-13 2016-11-15 Zih Corp. Modular print drive assembly and platen assembly
JP6829008B2 (ja) * 2016-05-24 2021-02-10 富士通コンポーネント株式会社 プリンタ
JP7057367B2 (ja) * 2017-09-26 2022-04-19 サトーホールディングス株式会社 プリンタ
JP6863316B2 (ja) * 2018-02-28 2021-04-21 ブラザー工業株式会社 印刷装置
EP4249271A4 (de) * 2020-11-18 2024-03-20 Sato Holdings Kabushiki Kaisha Druckmaschine

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3919754A1 (de) * 1989-06-16 1990-12-20 Philips Patentverwaltung Anordnung zur loesbaren befestigung einer schreibwalze in platinen
JP2000094767A (ja) * 1998-09-25 2000-04-04 Fujitsu Takamisawa Component Ltd サーマルプリンタ
JP2000118060A (ja) * 1998-10-14 2000-04-25 Star Micronics Co Ltd サーマルプリンタ
JP3885564B2 (ja) * 2001-11-16 2007-02-21 セイコーエプソン株式会社 プリンタ及びプリンタユニット
JP3910465B2 (ja) * 2002-02-22 2007-04-25 セイコーインスツル株式会社 サーマルプリンタ
KR100612020B1 (ko) * 2004-10-28 2006-08-11 삼성전자주식회사 감열방식 화상형성장치
JP4376816B2 (ja) * 2005-03-17 2009-12-02 セイコーインスツル株式会社 プラテンローラ保持構造および記録装置
FR2889555B1 (fr) * 2005-08-03 2007-10-05 Axiohm Soc Par Actions Simplif Dispositif de retenue deverouillable d'un doigt dans le fond d'une encoche

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EP2353875A1 (de) 2011-08-10
JP2011156798A (ja) 2011-08-18
JP5536480B2 (ja) 2014-07-02
CN102189813B (zh) 2015-01-14
CN102189813A (zh) 2011-09-21

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