EP0401036A1 - Druckmaschine für Thermodruck-Rollenpapier - Google Patents

Druckmaschine für Thermodruck-Rollenpapier Download PDF

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Publication number
EP0401036A1
EP0401036A1 EP90305997A EP90305997A EP0401036A1 EP 0401036 A1 EP0401036 A1 EP 0401036A1 EP 90305997 A EP90305997 A EP 90305997A EP 90305997 A EP90305997 A EP 90305997A EP 0401036 A1 EP0401036 A1 EP 0401036A1
Authority
EP
European Patent Office
Prior art keywords
spool
roll paper
paper
thermal print
print roll
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP90305997A
Other languages
English (en)
French (fr)
Other versions
EP0401036B1 (de
Inventor
Hiroshi C/O Patents Division Takeuchi
Yasuo C/O Patents Division Yukita
Akio C/O Patents Division Hitachi
Kazuya C/O Patents Division Ukeyama
Masakazu C/O Patents Division Sone
Hidehiko C/O Patents Division Funayama
Yasushi C/O Patents Division Hirumi
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.)
Sony Corp
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Publication of EP0401036A1 publication Critical patent/EP0401036A1/de
Application granted granted Critical
Publication of EP0401036B1 publication Critical patent/EP0401036B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
    • B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
    • B65H75/18—Constructional details
    • 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
    • B41J15/02—Web rolls or spindles; Attaching webs to cores or spindles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
    • B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
    • B65H75/18—Constructional details
    • B65H75/182—Identification means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/41—Winding, unwinding
    • B65H2301/415—Unwinding
    • B65H2301/4152—Finishing unwinding process
    • B65H2301/41522—Detecting residual amount of web
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2402/00—Constructional details of the handling apparatus
    • B65H2402/60—Coupling, adapter or locking means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2553/00—Sensing or detecting means
    • B65H2553/51—Encoders, e.g. linear

Definitions

  • the invention relates to a spool for thermal print roll paper, that is to say a spool on which thermal roll paper for use with a thermal printer can be rolled.
  • Such thermal print roll paper is generally surface treated on at least one of the opposite faces thereof so as to accept printing images thereon and has one of a plurality of gradient recording characteristics.
  • print paper can be roughly classified into roll paper type and cutform type based on the form of use.
  • Roll paper is normally provided in such a condition that it is wound on a spool formed as a substantially cylindrical tube made of thick paper. Such roll paper is loaded in a printer such that the spool thereof is supported for rotation at a predetermined roll paper loading station provided in the printer.
  • Print paper for use with a printer is processed in most cases by a predetermined method so that only one of the opposite faces thereof will accept printing or good printing image, and particularly roll paper for a thermal printer has applied to only one of the opposite faces thereof a recording material which develops an image when it is heated. Accordingly, roll paper for a thermal printer must necessarily be loaded in a printer in such a predetermined orientation that the processed face thereof, that is, a printing surface thereof, will be opposed to a thermal head in a paper feeding path.
  • thermosensible paper which is used to print for the two value (white/black) recording and thermosensible paper that is used for gradient recording printing as described above are prepared, and use of various types of roll paper having various image developing characteristics is increasing for printers having the same recording system.
  • roll paper of a different type to those specified for a printer may be loaded or roll paper which is not suitable for a set mode of a printer may be loaded, resulting in a printout in which a printed image is low in gradient reproducibility.
  • a spool for thermal print roll paper comprising: a main hub portion on which printing paper can be rolled; a pair of edge portions integrally formed with the main hub portion by moulding synthetic resin; and a first engaging portion and a second engaging portion formed on respective ones of the edge portions and to be engaged with a pair of engaging members provided in a printing machine, wherein the shapes of the first engaging portion and the second engaging portion are different from each other so as to prevent erroneous installation of the spool of thermal print roll paper into a printing machine.
  • the spool may further comprise a mark provided on one of the edge portions of the spool to be coupled to a detector provided in a printing machine to detect characteristics of the thermal print roll paper of the spool.
  • the spool may further comprise a first mark provided on one of the edge portions of the spool to be coupled to a detector provided in a printing machine to detect a remaining amount of thermal print roll paper on the spool.
  • the spool may additionally comprises a second mark provided on one of the edge portions of the spool to be coupled to a detector provided in a printing machine to detect characteristics of the thermal print roll paper on the spool.
  • the first mark and the second mark may be provided on the same surface of one of the edge portions.
  • the edge portions of the spool can have a function of detecting a remaining amount of thermal print roll paper on the spool in addition to functions of identification of a recording characteristic of roll paper or prevention of erroneous loading of roll paper. Accordingly, an erroneous printout which might be caused by a gradient recording characteristic of roll paper loaded not being compatible with a set mode of a printer, or another erroneous printout which might be caused by printing on a face of roll paper which is not a printing surface or by an erroneous forecast of a remaining amount of roll paper, can be prevented. Since the engaging portions and/or the marks can be formed in an integral relationship with the main hub portion of the spool from a synthetic resin material, the number of parts need not be increased nor need the cost be increased significantly.
  • each of the spools 2 and 3 includes a spool main portion 6 which includes a core shaft 4 having a substantially cylindrical configuration and a pair of flanges 5 and 5′ extending radially in planes perpendicular to the core shaft 4 from the opposite ends of the core shaft 4.
  • the flange 5 has four small projections 7 a or 7 b formed on and extending axially from an outer end face of the flange 5.
  • the spool main portion 6 and the projections 7 a or 7 b are formed in an integral relationship from a synthetic resin material.
  • the core shaft 4 has an insertion hole 8 formed at the centre thereof and extending along the axis therethrough.
  • the insertion hole 8 has a circular cross section and has such a tapered configuration that the diameter of the circular cross section thereof gradually increases from an end 8 a thereof adjacent the flange 5 toward the other end 8 b thereof adjacent the other flange 5′.
  • the projections 7 a on the spool 2 of the paper roll 1A are disposed in an angularly spaced relationship by about 90 degrees from each other with respect to the axis of the spool 2 adjacent an outer peripheral edge of the flange 5 while the projections 7 b on the spool 3 of the other paper roll 18 are disposed in an angularly spaced relationship by about 90 degrees from each other with respect to the axis of the spool 3 at substantially radially intermediate locations of the flange 5 between the outer peripheral edge of the flange 5 and the insertion hole 8.
  • Thermal print roll paper 9 and 10 has a recording material of the thermally image developing type applied to a face 9 a or 10 a thereof.
  • the thermal roll paper 9 and the other thermal roll paper 10 have different gradient recording characteristics from each other.
  • the thermal roll paper 9 is wound on the core shaft 4 of the spool 2 while the thermal roll paper 10 is wound on the core shaft 4 of the spool 3 such that the face 9 a or 10 a , that is, the printing surface of each of them may be directed away from the core shaft 4 side and it may be wound in the clockwise direction as viewed from the flange 5 side on which the projections 7 a or 7 b are provided.
  • the paper roll 1A is constituted from the spool 2 and the thermal roll paper 9 wound on the spool 2 while the other paper roll 1B is constituted from the spool 3 and the thermal roll paper 10 wound on the spool 3, and the two paper rolls 1A and 1B are different in structure from each other in that the projections 7 a and 7 b are spaced by different distances from the centre axes of the spools 2 and 3 from each other.
  • the thermal printer 11 includes an outer housing 12, a platen 13 provided for rotation in the outer housing 12, and a thermal head 14 disposed behind and in an opposing relationship to the platen 13.
  • the thermal head 14 includes a circuit board member 15 on which a head driving circuit (not shown) is provided and a head support member 16 secured to a front end face of the circuit board member 15.
  • a plurality of heat generating resistor members are disposed on a portion of an outer periphery of the head support member 16 which is opposed to the platen 13 such that amounts of heat to be generated by the heat generating members may be individually controlled for each set printing mode in accordance with a pattern of picture elements for a print line of print data supplied to the thermal printer 11.
  • the thermal head 14 having such a construction as described just above is moved, only when a printing operation is to be performed, to an advanced position at which the heat generating face thereof contacts the platen 13 as indicated in solid lines in Figure 2, but in any other case, it is held at a standby position at which it is spaced by a small distance rearwardly away from the platen 13 as indicated in broken lines in Figure 2.
  • a paper guide 17 is disposed on the inside of a paper outlet opening 12 a of the outer housing 12 in an opposing relationship to and in the neighbourhood of the paper outlet opening 12 a .
  • a pair of paper feed rollers 18 are disposed between the platen 13 and the paper guide 17 while a cutter mechanism 19 is disposed between the paper guide 17 and the paper outlet opening 12 a of the outer housing 12.
  • a roll paper loading station 20 removably to receive the paper roll 1A or 1B thereon is disposed in the outer housing 12.
  • the roll paper loading station 20 includes a pair of support members 21 and 22 provided spaced apart from each other by a distance equal to the axial length of the paper rolls 1A and 1B.
  • the support members 21 and 22 have cylindrical fitting projections 23 and 24 formed on opposing faces 21 a and 22 a thereof.
  • the fitting projection 23 has a diameter a little smaller than the inner diameter of the end 8 a of the insertion hole 8 of the spool 2 or 3 while the other fitting projection 24 has a diameter a little smaller than the inner diameter of the other end 8 b of the insertion hole 8.
  • the support member 22 is secured to a frame member (not shown) of the thermal printer 11 while the support member 21 is supported for sliding movement on the frame member so as to allow adjustment of the distance thereof from the support member 22 and the support member 21 is normally urged toward the support member 22 by a resilient member (not shown).
  • the paper roll 1A or 1B is loaded at the roll paper loading station 20 in the following manner.
  • the fitting projection 24 of the support member 22 is inserted into the end 8 b of the insertion hole 8 of the spool 2 or 3.
  • the insertion hole 8 is different in diameter at the opposite ends 8 a and 8 b thereof, it is impossible to fit the fitting projection 24 into the other end 8 a of the fitting hole 8 if the paper roll 1A or 1B is in the reverse orientation.
  • the thermal roll paper 9 or 10 is threaded along the feed path such that the print face 9 a or 10 a thereof is opposed to the thermal head 14.
  • a detecting device 25 is provided to identify a gradient recording characteristic and to detect a remaining amount of the thermal roll paper 9 or 10 of the paper roll 1A or 1B loaded at the roll paper loading station 20.
  • the detecting device 25 includes a pair of contact fingers 26 and 27 each formed from a resilient member such as, for example, a leaf spring.
  • the contact fingers 26 and 27 are disposed in an opposing relationship to the projections 7 a and 7 b , respectively, provided on the flanges 5 of the paper roll 1A or 1B when the roll paper 1A or 1B is loaded at the roll paper loading station 20.
  • the contact finger 26 is positioned to be engaged successively by the projections 7 a when one of the spools 2 loaded at the roll paper loading station 20 is rotated around its axis. Each time the contact finger 26 is engaged by a projection 7 a , the contact of a switch 28 is closed.
  • the contact finger 27 is positioned to be engaged successively by the projections 7 b when one of the spools 3 loaded at the roll paper loading station 20 is rotated around its axis. Each time the contact finger 27 is engaged by a projection 7 b , the contact of a switch 29 is closed.
  • the contact fingers 26 and 27 have bent portions 26 a and 27 a formed at portions adjacent the free ends thereof, respectively, while they are mounted at the other end portions thereof on a switch mounting plate 30.
  • the switches 28 and 29 are also mounted on the switch mounting plate 30.
  • an indication of the recording characteristic of thermal print roll paper on the spool 2 or 3 loaded at the paper roll loading station 20 can be obtained by noting which one of the switches 28 and 29 generates a pulse signal.
  • the speed of rotation of the paper roll 1A or 1B rises as the diameter of the paper roll 1A or 1B decreases, that is, as the remaining amount of the roll paper 9 or 10 decreases, and in accordance with such rise of the speed of rotation, the number of pulses per fixed period of time gradually increases. From such variation in number of pulses, the amount remaining of the thermal roll paper 9 or 10 can be detected and consequently can be displayed.
  • rotation of the spool 2 or 3 stops when the remaining amount of the thermal roll paper 9 or 10 is reduced to zero, the number of pulses of the pulse signal per fixed period of time is reduced to zero. Accordingly, when such condition is detected, it can be indicated or notified, for example by warning sounds, that the paper has been used up.
  • Figures 5 and 6 show modifications to the spools of the first embodiment of the invention described above.
  • the modified spools are substantially similar to those of the spools 2 and 3 described above and only different therefrom in the structure of detecting portions thereof which are provided for the detection of a gradient recording characteristic and a remaining amount of roll paper.
  • description will be given below only of such differences, and those elements which have like structure or like functions to those shown in Figures 1A to 4B are denoted by like reference numerals. This also applies to the second and third embodiments described hereinbelow.
  • the flange 5 has a groove 33 a or 33 b formed on an outer end face thereof and extending in a circumferential direction around an axis of the spool 31 or 32.
  • the groove 33 a of the spool 31 is located substantially at a mid position between an outer circumferential edge of the flange 5 and the insertion hole 8 of the spool 31 while the groove 33 b of the other spool 32 is located adjacent the insertion hole 8.
  • the detecting device 25 includes the pair of contact fingers 26 and 27 having bent portions 26 a and 27 a formed adjacent the free ends thereof in an opposing relationship to the grooves 33 a and 33 b of the spools 31 and 32, respectively.
  • the bent portion 26 a of the contact finger 26 is engaged with the groove 33 a of the flange 5 of the spool 31, and accordingly, the contact of the switch 28 provided corresponding to the contact finger 26 remains in an open state.
  • the contact finger 27 is engaged at the bent portion 27 a thereof with the outer end face of the flange 5 and deflected by the latter toward the switch 29 to close the contact of the switch 29.
  • the bent portion 27 a of the contact finger 27 is engaged with the groove 33 b of the flange of the spool 32, and consequently, the contact of the switch 29 remains in an open state. Meanwhile, the bent portion 26 a of the contact finger 26 is engaged and deflected by the outer end face of the flange 5 toward the switch 28 to close the contact of the switch 28.
  • a pattern 34 for the generation of a frequency signal is provided on the flange 5 of each of the spools 31 and 32.
  • the pattern 34 includes a large number of detecting elements 34 a disposed in a predetermined circumferentially spaced relationship on the end face adjacent the outer periphery of the flange 5.
  • the detecting elements 34 a have a reflection factor different from that of the end face of the flange 5.
  • the detecting elements 34 a may be formed in an integral relationship with the spool main portion 6 of the spool 31 or 32, for example, by so-called double colour moulding.
  • a photo-sensor 35 is mounted on a circuit board (not shown) secured to the outer housing 12 and includes a light emitting element 35 a and a light receiving element 35b.
  • the photo-sensor 35 is disposed in an opposing relationship to the outer circumferential portion of the end face of the flange 5 of the spool 31 or 32 loaded at the roll paper loading station 20.
  • the frequency signal generating pattern 34 rotates upon rotation of the spool 31 or 32, the light receiving element 35 b develops an output signal in the form of pulses, and since the speed of rotation of the spool increases as the remaining amount of the thermal roll paper wound on the spool decreases, the amount remaining of the thermal roll paper can be detected by measuring the frequency of the output pulse signal of the light receiving element 35 b .
  • spools for print roll paper according to a second embodiment of the invention are shown.
  • the spools are denoted by reference numerals 36 and 37 and include each a pair of flanges 5 and 5′.
  • a support projection 38 having a circular cross section is provided at the centre of the outer face of the flange 5 of each of the spools 36 and 37 while another support projection 39 having a cross section of a substantially equilateral triangle is provided at the centre of the outer face of the other flange 5′.
  • four metal pieces 40 a or 40 b made of a material having a high electric conductivity are provided on the flange 5 of each of the spools 36 and 37.
  • the metal pieces 40 a or 40 b are each embedded in the flange 5 such that one face thereof is positioned flush with the outer face of the flange 5 and the pieces are disposed in a circumferentially spaced relationship by an angle substantially equal to go degrees around the axis of the flange 5.
  • the metal pieces 40 a of the spool 36 are provided on the outer end face adjacent an outer periphery of the flange 5 while the metal pieces 40 b of the other spool 37 are provided substantially at mid locations of the outer end face of the spool 5 between the outer periphery of the flange 5 and the support projection 38 on the flange 5.
  • the support projections 38 and 39 are formed from a synthetic resin material in an integral relationship with a spool main portion 6 which includes the flanges 5, 5′ and a core shaft 4 in and the metal pieces 40 a and 40 b are formed in an integral relationship with the spool main portion 6 by insert moulding with the flanges 5.
  • a support member 22′ is secured to an outer housing (not shown) and has a substantially C-shaped recess 22′ a formed therein such that an end portion thereof is opened obliquely upwardly so that the support projection 38 provided on the flange 5 of the spool 36 or 37 may be received into the recess 22′ a .
  • a support wall 41 is disposed on the opposite side of the roll paper loading station 20 to the support member 22′.
  • the support wall 41 has a cylindrical support projection or hub portion 41 a formed at a portion of an inner face thereof opposing a lower portion of the recess 22′ a of the support member 22′, and a spool supporting shaft 42 is supported for axial movement within a predetermined fixed range in the cylindrical support projection 41 a of the support wall 41.
  • the spool supporting shaft 42 is formed as a unitary member having a shaft portion 42 a in the form of a circular section rod, a spring receiving flange 42 b connected to an axial end of the shaft portion 42 a adjacent the support member 22′, and a support portion 42 c extending from the spring receiving flange 42 b towards the support member 22′.
  • a fitting hole 42 d is formed in the support portion 42 c of the spool supporting shaft 42 such that it is open to the support member 22′ side.
  • the fitting hole 42 d is so shaped and dimensioned that the support projection 39 provided on the spool 36 or 37 may fit substantially neatly therein, and accordingly, the fitting hole 42 d has a triangular cross section.
  • the spool supporting shaft in2 of such construction is inserted at the shaft portion 42 a thereof for sliding movement in the cylindrical support projection 41 a of the support wall 41 and has a knob 43 secured to an end of the shaft portion 42 a thereof remote from the support portion 42 c .
  • a coil spring 44 is interposed in a compressed condition between the support wall 41 and the spring receiving flange 42 b of the spool supporting shaft 42.
  • the cylindrical support projection 38 thereon is inserted into the recess 22′ a of the support member 22′, and then the other triangular support projection 39 is inserted into the fitting hole 42 d of the spool supporting shaft 42.
  • a pair of detecting devices 45 and 46 are provided, and each of the detecting devices 45 and 46 has a pair of leaf-shaped contact fingers 47 a or 47 b .
  • the contact fingers 47 a of the detecting device 45 are disposed such that they may be successively engaged resiliently and lightly with the metal pieces 40 a of the spool 36 loaded at the roll paper loading station 20 when the spool 36 rotates while the contact fingers 47 b of the detecting device 46 are disposed such that they may be successively contacted resiliently and lightly with the metal pieces 40 b of the spool 37 loaded at the roll paper loading station 20 when the spool 37 rotates.
  • the contact fingers 47 of the detecting device 45 are intermittently short-circuited by the metal pieces 40 a of the spool 36, and consequently, the detecting device 45 develops a predetermined pulse signal.
  • the contact fingers 47 b of the detecting device 47 are intermittently short-circuited by the metal pieces 40 b of the spool 37, and consequently, another predetermined pulse signal is developed from the detection device 46. Accordingly, a recording characteristic of thermal roll paper can be identified depending upon from which one of the detection devices 45 and 46 a pulse signal is developed. Further, the remaining amount of thermal print roll paper can be detected by measuring a frequency of the pulse signal.
  • FIGS 11(A) to 12(B) there are shown modifications to the spools 36 and 37 shown in Figures 7(A) to 10(B).
  • the modified spools denoted at 48 and 49 are different from the spools 36 and 37 in that detection of a gradient recording characteristic and detection of the remaining amount of thermal roll paper are effected using magnetic means.
  • a flange 5 has four magnetized portions 50 a or 50 b which are spaced by an angular distance equal to about 90 degrees in a circumferential direction around the centre of the flange 5.
  • the magnetized portions 50 a on the spool 48 are provided on an outer end face adjacent an outer periphery of the flange 5 while the magnetized portions 50 b on the other spool 49 are provided at substantially mid locations on the outer end face of the spool 5 between the outer periphery of the spool 5 and the support projection 38.
  • a detecting coil 51 is disposed in the proximity of and in an opposing relationship to a locus of rotation of the magnetized portions 50 a of the spool 48 loaded at the roll paper loading station 20 and a detecting coil 52 is disposed in the proximity of and in an opposing relationship to a locus of rotation of the magnetized portions 50 b of the spool 49 loaded at the roll paper loading station 20.
  • the magnetized portions 50 a thereof are intermittently opposed to the detecting coil 51, and consequently, a voltage is induced in the detecting coil 51.
  • the magnetized portions 50 b thereon are intermittently opposed to the other detecting coil 52 so that a voltage is induced in the detecting coil 52. Accordingly, a recording characteristic of thermal roll paper can be identified depending upon from which one of the detecting coils 51 and 52 a signal is detected. Further, the remaining amount of the thermal roll paper can be detected by detecting a frequency of the pulse voltage or current of the signal developed from the detecting coil 51 or 52.
  • FIG. 13(A) to 16(B) there are shown spools 53, 54 for print roll paper according to a third embodiment of the present invention.
  • the flange 5 at one end has a support hole 55 of circular cross section formed at the centre thereof while the flange 5′ at the other end has a support hole 56 of a cross section of a substantially equilateral triangle formed at the centre thereof.
  • the flange 5 of each of the spools 53 and 54 is treated at an outer end face thereof such that it may have a comparatively high reflection factor.
  • the flange 5. has four transparent portions 57 a or 57 b disposed in a circumferentially spaced relationship by an angular distance of about 90 degrees around the centre thereof.
  • the transparent portions 57 a and 57 b may be made of a transparent synthetic resin material.
  • the transparent portions 57 a of the spool 53 are provided adjacent an outer periphery of the flange 5 while the transparent portions 57 b of the other spool 54 are provided at substantially mid locations between the outer periphery of the flange 5 and the support hole 55.
  • the spool main portion 6 and the transparent portions 57 a or 57 b may be formed in an integral relationship by double colour moulding of a synthetic resin material.
  • a fitting projection 58 a in the form of a round post extends inwardly from an inner face of the support wall 58.
  • the fitting projection 58 a has substantially the same diameter as the inner diameter of the support hole 55.
  • a cylindrical support tube 59 a is formed on and extends inwardly from an inner face of the support wall 59 in an opposing relationship to the fitting projection 58 a of the support wall 58.
  • a spool supporting shaft 60 having substantially the same structure as that of the spool supporting shaft 42 described hereinabove is mounted on the support wall 59.
  • the spool supporting shaft 60 has a shaft portion 60 a which is supported for sliding movement in the support tube 59 a of the support wall 59.
  • the spool shaft 60 further has a spring receiving flange 60 b and a fitting projection 60 c extending from the spring receiving flange 60 b toward the support wall 58.
  • the fitting projection 60 c of the spool shaft 60 has a triangular cross section which is a complementary cross section to that of the support hole 56 of the spool 53 or 54.
  • the fitting projection 58 a provided on the support wall 58 is inserted into the support hole 55 of the spool 53 or 54, and then the fitting projection 60 c of the spool supporting shaft 60 on the other support wall 59 is inserted into the other support hole 56 of the spool 53 or 54.
  • a pair of photo-sensors 61 and 62 are provided and include each a light emitting element 61 a or 62 a and a light receiving element 61 b or 62 b .
  • the photo-sensor 61 is disposed in the proximity of and in an opposing relationship to a locus of rotation of the transparent portions 57 a of the spool 53 loaded at the roll paper loading station 20 while the other photo-sensor 62 is disposed in the proximity of and in an opposing relationship to a locus of rotation of the transparent portions 57 b of the other spool 54 loaded at the roll paper loading station 20.
  • the intensity of light received by the light receiving element 61 b decreases each time a transparent portion 57 a of the spool 53 is opposed to the optical sensor 61. Consequently, a predetermined pulse signal is produced from the photo-sensor 61. Meanwhile, a signal of a substantially fixed level is produced from the other photo-sensor 62.
  • the intensity of light received by the light receiving element 62 b decreases each time a transparent portion 57 b of the spool 54 is opposed to the photosensor 61. Consequently, a predetermined pulse signal is produced from the photo-sensor 62 while a signal of a substantially fixed level is produced from the photosensor 61. Accordingly, a recording characteristic of thermal roll paper can be identified depending upon from which one of the photo-sensors 61 and 62 a pulse signal is developed.
  • the remaining amount of the thermal roll paper can be detected by detecting the frequency of such pulse signal.
  • the transparent portions 57 a and 57 b could be replaced by recesses or holes which could be optically detected by the photo-sensors 61 and 62 or like optical elements.
  • detecting means for the detection of a recording characteristic serves also as detecting means for the detection of a remaining amount of roll paper in most of the embodiments and modifications described hereinabove, such construction can be effective to prevent the structure of a spool from being complicated.
  • identification of a recording characteristic of roll paper is performed based on a difference in distance between detecting elements and an axis of a spool
  • means for the identification of a gradient recording characteristic according to a spool for thermal print roll paper is not limited to such specific means, and for example, the number of detecting elements may be differentiated for each roll paper having a different recording characteristic.

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  • Unwinding Webs (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
  • Handling Of Continuous Sheets Of Paper (AREA)
  • Accessory Devices And Overall Control Thereof (AREA)
  • Electronic Switches (AREA)
EP90305997A 1989-06-02 1990-06-01 Druckmaschine für Thermodruck-Rollenpapier Expired - Lifetime EP0401036B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP1141412A JPH035178A (ja) 1989-06-02 1989-06-02 プリント用ロール紙のスプール
JP141412/89 1989-06-02

Publications (2)

Publication Number Publication Date
EP0401036A1 true EP0401036A1 (de) 1990-12-05
EP0401036B1 EP0401036B1 (de) 1995-05-03

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP90305997A Expired - Lifetime EP0401036B1 (de) 1989-06-02 1990-06-01 Druckmaschine für Thermodruck-Rollenpapier

Country Status (3)

Country Link
EP (1) EP0401036B1 (de)
JP (1) JPH035178A (de)
DE (1) DE69019064T2 (de)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9107857U1 (de) * 1991-06-26 1991-09-12 Stewing Kunststoffbetrieb Gmbh, 4270 Dorsten, De
EP0518712A1 (de) * 1991-06-11 1992-12-16 Sextant Avionique S.A. Ergonomischer Drucker zur Verwendung an Bord eines Flugzeugcockpits
EP0750994A2 (de) * 1995-06-27 1997-01-02 Fuji Photo Film Co., Ltd. Druckvorrichtung und Verfahren
EP0926092A1 (de) * 1997-12-24 1999-06-30 Eastman Kodak Company Spule für fadenartiges oder bahnartiges Wickelmaterial
EP1000763A1 (de) * 1998-11-03 2000-05-17 Eltron International, Inc. Vorrichtung zum Spannen einer Rolle
EP1033684A1 (de) * 1999-03-01 2000-09-06 Wayfarer Transit Systems Ltd Papierspender
EP1052211A2 (de) * 1996-09-20 2000-11-15 Kabushiki Kaisha Yuyama Seisakusho Hülsenrohr für Bandrolle
EP1075959A3 (de) * 1999-08-09 2001-04-25 Hewlett-Packard Company Druckgerät eines Trommeltyps
US6663211B2 (en) 1999-04-26 2003-12-16 Shuichi Aratsu Printing device and roll paper
US6755583B1 (en) * 1999-06-08 2004-06-29 Sony Corporation Roll-like printing paper, video printer using such roll-like printing paper and method of detecting remaining quantity of printing paper
FR2872806A1 (fr) * 2004-07-06 2006-01-13 Georgia Pacific France Soc En Systeme de distribution de rouleaux de papiers a mandrins conducteurs
CN102431318A (zh) * 2010-09-02 2012-05-02 索尼公司 感热纸卷、图像形成装置、图像形成方法和程序
CN104418143A (zh) * 2013-08-20 2015-03-18 芯发威达电子(上海)有限公司 具有纸卷用量检测功能的纸卷装置
CN113022027A (zh) * 2021-03-15 2021-06-25 赵莉莉 一种爆竹纸筒加工装置
CN114889343A (zh) * 2022-03-30 2022-08-12 厦门顶尖电子有限公司 纸卷的辨识方法和装置、标签纸纸卷以及标签打印机

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US5513920A (en) * 1992-10-29 1996-05-07 Eastman Kodak Company Dye donor web loading apparatus for a thermal printer
CN1128720C (zh) * 1999-01-25 2003-11-26 法格电子公司 打印机或层压器和供给装置之间传送信息的装置
JP2009274830A (ja) * 2008-05-15 2009-11-26 Noritsu Koki Co Ltd プリンタ
JP6244619B2 (ja) * 2012-11-26 2017-12-13 株式会社寺岡精工 ロール紙とロール紙を備えた発券機

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US4171781A (en) * 1977-04-20 1979-10-23 Develop Kg Dr. Eisbein & Co. Copying apparatus
US4699034A (en) * 1983-03-04 1987-10-13 Ricoh Company, Ltd. Roll paper handling apparatus

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Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0518712A1 (de) * 1991-06-11 1992-12-16 Sextant Avionique S.A. Ergonomischer Drucker zur Verwendung an Bord eines Flugzeugcockpits
FR2677580A1 (fr) * 1991-06-11 1992-12-18 Sextant Avionique Imprimante ergonomique utilisable a bord du poste de pilotage d'un aerodyne.
US5388923A (en) * 1991-06-11 1995-02-14 Sextant Avionique Ergonomic printer for use in aircraft cockpits
DE9107857U1 (de) * 1991-06-26 1991-09-12 Stewing Kunststoffbetrieb Gmbh, 4270 Dorsten, De
EP0750994A2 (de) * 1995-06-27 1997-01-02 Fuji Photo Film Co., Ltd. Druckvorrichtung und Verfahren
EP0750994A3 (de) * 1995-06-27 1998-09-16 Fuji Photo Film Co., Ltd. Druckvorrichtung und Verfahren
EP1092549A1 (de) * 1995-06-27 2001-04-18 Fuji Photo Film Company Limited Druckvorrichtung und Verfahren
EP1052211A2 (de) * 1996-09-20 2000-11-15 Kabushiki Kaisha Yuyama Seisakusho Hülsenrohr für Bandrolle
EP1052211A3 (de) * 1996-09-20 2001-04-11 Kabushiki Kaisha Yuyama Seisakusho Hülsenrohr für Bandrolle
EP0926092A1 (de) * 1997-12-24 1999-06-30 Eastman Kodak Company Spule für fadenartiges oder bahnartiges Wickelmaterial
US6065716A (en) * 1997-12-24 2000-05-23 Eastman Kodak Company Self-alignment element for a spool having wound web thereon
EP1000763A1 (de) * 1998-11-03 2000-05-17 Eltron International, Inc. Vorrichtung zum Spannen einer Rolle
EP1033684A1 (de) * 1999-03-01 2000-09-06 Wayfarer Transit Systems Ltd Papierspender
US6663211B2 (en) 1999-04-26 2003-12-16 Shuichi Aratsu Printing device and roll paper
US6755583B1 (en) * 1999-06-08 2004-06-29 Sony Corporation Roll-like printing paper, video printer using such roll-like printing paper and method of detecting remaining quantity of printing paper
EP1075959A3 (de) * 1999-08-09 2001-04-25 Hewlett-Packard Company Druckgerät eines Trommeltyps
US6414701B2 (en) 1999-08-09 2002-07-02 Hewlett-Packard Company Drum type hard copy apparatus
FR2872806A1 (fr) * 2004-07-06 2006-01-13 Georgia Pacific France Soc En Systeme de distribution de rouleaux de papiers a mandrins conducteurs
WO2006013241A1 (fr) * 2004-07-06 2006-02-09 Georgia-Pacific France Systeme de distribution de rouleaux de papiers a mandrins conducteurs
US7533845B2 (en) 2004-07-06 2009-05-19 Georgia-Pacific France System for dispensing paper rolls with conductive tubes
US8511598B2 (en) 2004-07-06 2013-08-20 Georgia-Pacific France System for dispensing paper rolls with conductive tubes
CN102431318A (zh) * 2010-09-02 2012-05-02 索尼公司 感热纸卷、图像形成装置、图像形成方法和程序
CN104418143A (zh) * 2013-08-20 2015-03-18 芯发威达电子(上海)有限公司 具有纸卷用量检测功能的纸卷装置
CN113022027A (zh) * 2021-03-15 2021-06-25 赵莉莉 一种爆竹纸筒加工装置
CN114889343A (zh) * 2022-03-30 2022-08-12 厦门顶尖电子有限公司 纸卷的辨识方法和装置、标签纸纸卷以及标签打印机

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JPH035178A (ja) 1991-01-10
DE69019064D1 (de) 1995-06-08
EP0401036B1 (de) 1995-05-03
DE69019064T2 (de) 1995-08-31

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