EP0659568B1 - Imprimante à jet d'encre - Google Patents

Imprimante à jet d'encre Download PDF

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Publication number
EP0659568B1
EP0659568B1 EP19940120468 EP94120468A EP0659568B1 EP 0659568 B1 EP0659568 B1 EP 0659568B1 EP 19940120468 EP19940120468 EP 19940120468 EP 94120468 A EP94120468 A EP 94120468A EP 0659568 B1 EP0659568 B1 EP 0659568B1
Authority
EP
European Patent Office
Prior art keywords
paper feed
printer
unit
inkjet head
carriage
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP19940120468
Other languages
German (de)
English (en)
Other versions
EP0659568A2 (fr
EP0659568A3 (fr
Inventor
Susumu C/O Seiko Epson Corporation Hama
Hiroshi C/O Seiko Epson Corporation Takizawa
Toshiaki C/O Seiko Epson Corporation Watanabe
Masahiro C/O Seiko Epson Corporation Kamijo
Manabu C/O Seiko Epson Corporation Shimizu
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 Epson Corp
Original Assignee
Seiko Epson 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
Priority claimed from JP33332893A external-priority patent/JP3574168B2/ja
Priority claimed from JP22974594A external-priority patent/JPH0890863A/ja
Application filed by Seiko Epson Corp filed Critical Seiko Epson Corp
Publication of EP0659568A2 publication Critical patent/EP0659568A2/fr
Publication of EP0659568A3 publication Critical patent/EP0659568A3/fr
Application granted granted Critical
Publication of EP0659568B1 publication Critical patent/EP0659568B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
    • B41J3/36—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for portability, i.e. hand-held printers or laptop printers
    • 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
    • B41J13/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, specially adapted for supporting or handling copy material in short lengths, e.g. sheets
    • B41J13/10—Sheet holders, retainers, movable guides, or stationary guides
    • B41J13/103—Sheet holders, retainers, movable guides, or stationary guides for the sheet feeding section

Definitions

  • This invention relates to an inkjet printer and, more particularly, to an inkjet printer capable of slip printing.
  • Slip printing refers to printing on relatively rigid print media like thick paper or cardboard, etc., that cannot be or should not be transported through a curved feed path.
  • slip printing is contrasted by what will be called “normal printing” here, i.e. printing on flexible or pliant print media like ordinary paper.
  • US-A-4,920,258 discloses an inkjet printer suitable for normal printing only.
  • the known inkjet printer comprises, mounted to a common frame, an inkjet unit, a carriage on which the inkjet unit is mounted, a carriage drive mechanism, and paper feed means including a platen disposed opposite the inkjet unit and feed rollers that transport recording sheets between the inkjet head and the platen through a bent feed path.
  • a printer dedicated to slip printing and not capable of normal printing is disclosed in JP-A-39270/1991.
  • a printer suitable for slip printing and normal printing is disclosed in US-A-4,375,923.
  • This known printer has combined in one machine plural print stations of which one is designed for slip printing. Except for being an impact dot printer using an ink ribbon, this prior art has a very complex and bulky structure making it rather expensive.
  • slip printing can be performed by either of the thermal transfer method, the wire-dot method and the inkjet method.
  • the inkjet method is best suited for slip printing for the following reasons:
  • An inkjet printer according to the prior art portion of claim 1 is disclosed in EP-A-0 537 679.
  • the drive mechanism is located in front of the inkjet head such that the nozzles of the inkjet head are in the middle plane between the front and the rear end of the printer unit.
  • the paper feed unit is fixed to the printer unit in a front part thereof.
  • an object of the present invention to provide an inexpensive inkjet printer capable of performing high quality slip printing and normal printing.
  • the printer comprises two separate units, a printer unit and a paper feed unit the latter being detachably mounted to a front end of the printer unit.
  • the carriage and the drive mechanism for it are located either at the back of or below the inkjet head.
  • the paper feed unit is intended and designed for normal printing, i.e. to feed pliant print media to a position opposite the inkjet head.
  • For slip printing the paper feed unit can be easily dismounted. When it is removed from the printer unit there are no obstacles to slip printing in front of the inkjet head. Therefore, this structure enables one printer to perform both, slip printing as well as normal printing.
  • the frame of the printer unit has a front plate for mounting the paper feed unit.
  • the nozzles of the inkjet head are kept in a plane parallel to the front plate, such that, when the paper feed unit is removed, the front side of the front plate provides a guide surface for rigid print media such as slip paper.
  • Use of such guide surface for slip printing ensures the appropriate gap between the recording medium and the nozzles of the inkjet head. Since the gap size is not as critical as in thermal transfer printing or wire dot printing, accurate slip printing is made possible without requiring high-precision manufacturing of the printer.
  • the paper feed unit can be endowed with various functions according to the intended purpose. Different paper feed units can be provided so that the user can select the desired unit to suit a particular objective.
  • a paper feed unit may have plural paper feed mechanisms each providing a different unit amount of paper feed, i.e. a different line spacing.
  • the line spacing can be predetermined, as an example, by setting deceleration ratios of gears employed to transmit the drive force to feed rollers. For example, when printing graphics, such as figures and graphs, or printing characters, such as enlarged characters that are larger than the height of a normal print line, space between lines would not be desirable. In such a case, the line spacing for graphic printing is set so that it is equal to the height of one print line of the inkjet head. On the other hand, when printing character strings, some spacing should be provided between two successive lines for readability. In this case, the unit amount of paper feed for character string printing is set to be larger than the height of one print line of the inkjet head.
  • the paper feed unit for the inkjet printer of the present invention is provided with an ink collecting recess that catches the ink droplets that are ejected from the inkjet head, and an ink absorption member that receives and absorbs the ink from the ink collecting recess. This facilitates the nozzle recovery of the inkjet head in the condition in which the paper feed unit is attached.
  • the inkjet printer is composed of printer unit 10 and paper feed unit 50.
  • Fig. 1 shows the paper feed unit 50 detached from the printer unit 10.
  • Printer unit 10 comprises a frame 13.
  • Frame 13 has a base plate 131, two side plates 132 and a front plate 133.
  • the side plates 132 and the front plate 133 are bent at right angles from the base plate 131.
  • Two guide rods 14 are mounted to the side plates 132 to extend in parallel to each other and to the front plate 133.
  • a carriage 12 is slidably supported on the guide rods 14 for a reciprocating movement between the two side plates 132.
  • An inkjet cartridge 11 is mounted on the carriage.
  • the inkjet cartridge 11 includes an inkjet head 11a and an ink container (not shown).
  • Nozzles of the inkjet head 11a face the front side of the printer unit, i.e. towards front plate 133.
  • Carriage 12 is coupled to a endless timing belt 19 stretched between a driving gear 18 and a driven gear 20 to extend in parallel to the guide rods 14.
  • Timing belt 19 is arranged at the rear side of the carriage 12.
  • Gear 18 is fixed to one end of a shaft 17a while gear 20 is fixed to one end of a shaft 17b.
  • Shafts 17a and 17b are supported each at the other end by a respective flange portion 134, 135 of the frame.
  • a drive motor 15 is disposed behind timing belt 19.
  • a worm gear 15a (see Fig. 3) is fixed on the motor shaft. Worm gear 15a is engaged by a worm wheel 16 fixed to shaft 17a.
  • drive of the motor 15 is transmitted via worm gear 15a, worm wheel 16, shaft 17a and gear 18 to the timing belt 19.
  • drive motor 15 is a DC motor, whose shaft, when driven, always rotates in the same direction.
  • the timing belt is also driven always in the same direction.
  • a drive pin 30, shown in Fig. 3 is fixed to the timing belt 19 and alternately couples the carriage 12 with the upper and the lower run of timing belt 19. Since this is a well known mechanism a further detailed description will be omitted.
  • cable 26 shown in the figures is for connecting the drive motor 15 and a sensor 31 explained later to a control circuit not shown.
  • cable 27 is for connecting the inkjet head 11a to the control circuit.
  • the drive power of drive motor 15 is used to reciprocate the carriage 12 and the inkjet cartridge along guide rods 14.
  • the drive power of the motor is also used for driving a paper feed mechanism of the paper feed unit 50.
  • This is achieved by means of a transmission shaft 23 best shown in Figs. 1 and 4.
  • a gear 22 is fixed to one end of the transmission shaft 23 and a worm gear 24 to the other end.
  • Transmission shaft 23 is supported in the frame 13 so that gear 22 is engaged with an intermediate gear 21 fixed to shaft 17b. In this way, transmission shaft 23 is driven in response to a movement of the timing belt 19.
  • Paper feed unit 50 is provided with a gear train 51. When the paper feed unit is mounted to the printer unit, the gear train 51 is engaged with worm gear 24. As shown in Fig. 3, paper feed unit 50 includes two feed rollers 52 and 53. Feed rollers 52, 53 are disposed in a feed path at an intermediate position between a paper inlet slit 56a and a paper outlet slit 56b and are arranged to be driven in mutually opposite directions by means of the gear train 51. With paper feed unit 50 mounted to the printer unit 10 printing is performed on print media fed by paper feed unit 50 through the feed path bent as shown in Fig. 3.
  • gear train 51 With a serial printer like the present one, the print medium is fed by a distance corresponding to the line spacing each time one line has been printed and prior to the start of the next line. Since the worm gear is continuously rotated as the carriage is moved, the gear train 51 has to convert this continuous drive into an intermittent drive of the feed rollers 52, 53. In the present embodiment, printing is performed while the carriage is moved from a home position at one end of its range of movement to the other end. During this forward stroke of the carriage drive power is not transferred to the feed rollers. During the following backward stroke gear train 51 couples the drive rollers to the worm gear causing the print medium to be fed. Thus, gear train 51 functions as an intermittent or indexing drive mechanism.
  • paper feed unit 50 is mounted to the printer unit to be easily detachable. In this embodiment it is screwed onto front plate 133 of the frame 13.
  • the printer unit 10 By configuring the printer unit 10 in the way described above, when the paper feed unit 50 is detached, the nozzles of inkjet head 11a are at the very front of the printer unit with nothing protruding forward beyond the plane of the nozzles (except for the front plate 133 in the embodiment). This enables rigid print media to be brought sufficiently near to the inkjet head 11a without necessity for bending.
  • front plate 133 is arranged in a manner so that its front side may be used as a guide surface 13a for such rigid print media like slip paper that cannot be fed through the curved feed path of paper feed unit 50.
  • the lower part of the paper feed unit 50 is provided with an ink absorber 54 used to absorb ink which is ejected from the inkjet head for nozzle recovery.
  • Ink absorber 54 is attached to paper feed unit 50 in a way that it can be easily replaced by removing paper feed unit 50 from printer unit 10.
  • Figure 5 is a perspective view of paper feed unit 50.
  • Ink absorber 54 has an L-shaped structure with ink-absorbing material 54a covered with an outer cover 55, made of resin, for example. Cover 55 is provided in order to prevent leakage of the stored waste-ink. At the upper end face of the vertical leg the ink-absorbing material is exposed.
  • An ink collecting recess 50a is provided in the paper feed unit above the exposed end face.
  • the carriage is moved to a position at which the nozzles of the inkjet head are opposite the ink collecting recess 50a.
  • Ink droplets ejected into the recess 50a will then be absorbed by the ink absorber, thus preventing any staining of the print medium.
  • the coverage of ink absorber 54 with outer cover 55 prevents any staining of guide surface 13a. If guide surface 13a became stained, the print medium would also become stained during the slip printing to be described later.
  • Printer unit 10 is provided with a rotary encoder 25 that detects the rotation of motor 15.
  • the encoder is fixed on the motor shaft in front of worm gear 15a as shown in Fig. 4.
  • Encoder 25 is a cup-shaped member with a circumferential wall in which a plurality holes 25a are provided with regular intervals in the circumferential direction. This wall is received in the opening of a C-shaped sensor 31 of a so-called photo-interrupter type.
  • holes 25a allow the passage of the light emitted from one end of sensor 31 so that the other end of sensor 31 can pick up the light.
  • sensor 31 generates timing pulses and detects the rotation of motor 15.
  • a signal representing the position of the carriage is derived from the timing pulses in the control circuit not shown.
  • Figure 6 depicts a mechanism for detecting the home position of carriage 12.
  • a shield plate 33 is attached to carriage 12.
  • shield plate 33 blocks the light path of sensor 31. Because the length of time during which the light path is blocked by shield plate 33 is greater than the length of time during which light is blocked between two successive holes 25a of rotary encoder 25, it is possible to detect the home position by measuring the time during which no timing pulse is output by the sensor 31.
  • (a) shows the carriage in a position just before reaching its home position
  • (b) shows the carriage in its home position with shield plate 33 intercepting the light
  • (c) shows the carriage in a position when it has just left its home position.
  • motor 15 has been described to be a DC motor in the above embodiment a step motor can be employed instead.
  • encoder 25 for detecting the rotation of the motor can be omitted.
  • control voltages for motor 15 and sensor 31 are supplied through cable 26.
  • control signals are supplied through cable 27 to inkjet head 11a.
  • the rotational drive of motor 15 rotates timing belt 19 which in turn reciprocates carriage 12 as has been described.
  • the forward stroke of the carriage ink is ejected from inkjet head 11a according to the control signals and printing is performed.
  • the paper feed rollers 52 and 53 are driven to advance the print medium by one line. These operations are performed repeatedly for each line that is printed.
  • the drive mechanism for the carriage is provided behind inkjet head 11a.
  • This enables the printer to perform slip printing by removing paper feed unit 50 from printer unit 10 as depicted in Figs.7(a) to (c).
  • Removing paper feed unit 50 exposes the front surface of the front plate 133 of the frame 13.
  • the front surface serves as a guide surface 13a for slip paper or any other rigid recording media.
  • guide surface 13a is positioned to ensure that there is an appropriate gap G between slip paper 60 and nozzles 61 of the inkjet head 11a.
  • a card transport device similar to that depicted in Fig.
  • the printer unit 10 of the present invention may be used for slip printing with the printer unit 10 of the present invention to transport rigid print media such that it is guided by the guide surface 13a.
  • the structure of the printer unit according to the present invention is particularly suitable for a small sized printer, its slip printing capability enables its use as a kind of a hand-held labelling machine.
  • the printer unit 10 with the paper feed unit removed is held on a book (Fig. 7(c)) on a wall (Fig. 7(b) or wherever something is desired to be printed.
  • the printer unit 10 has a casing 10a (shown in section) attached to it. The casing allows easy handling and does, of course, not cover the front side of the printer unit.
  • FIG 8 is a diagram, similar to Fig. 3, depicting an inkjet printer according to a second embodiment of the present invention.
  • the printer unit 10 is the same as in the first embodiment while the paper feed unit 50' is different.
  • the paper feed unit of this second embodiment is designed for printing on slightly rigid paper e.g., postcards. Accordingly, as will be seen from a comparison between Figs. 3 and 8, the feed path in the paper feed unit of the second embodiment is only slightly curved.
  • Inlet opening 62 for inserting the print medium is provided in the lower part of paper feed unit 50'.
  • Feed rollers 52' and 53' are provided to feed the print medium in a roughly diagonal upward direction. Feed rollers 52'and 53' are driven by a gear train (not shown) quite similar to that of the first embodiment.
  • Figs. 9 and 10 illustrate a third embodiment of the invention.
  • the printer unit 10 is the same as in the first and second embodiments while the paper feed unit 50'' is different.
  • the paper feed unit of the third embodiment is equipped with multiple paper feed mechanisms.
  • paper feed unit 50'' has two separate paper inlets, i.e. first paper inlet 561 and second paper insertion inlet 562, and one common paper outlet 563.
  • Print medium inserted from first paper inlet 561 is guided to first paper feed rollers 52a and 53a
  • print medium inserted from second paper inlet 562 is guided to second paper feed rollers 52b and 53b.
  • the amount of paper feed per line caused by feed rollers 52a, 53a is different from that caused by feed rollers 52b, 53b.
  • the amount of paper feed is set to be suitable for graphic printing.
  • paper feed by one pair of feed rollers may be set to a normal amount equal to the print line height, while that of the other pair of feed rollers may be set to half the normal amount for high-density printing in order to permit overstriking.
  • the amount of paper feed per line can be assigned in several variations. By selecting the appropriate paper insertion inlet for a particular purpose, the user can obtain the desired print pattern. Further, although this embodiment is based on the assumption that two values of paper feed amount are required, three or more values can also be implemented as long as the corresponding number of required paper inlets and feed roller pairs can be accommodated in the paper feed unit.
  • Figure 10 shows a representative example of gear train 51 for the embodiment shown in Figure 9.
  • the drive force transmitted to worm gear 24 through transmission shaft 23 is transmitted to gear 57a.
  • a gear 57b is fixed to the same shaft as gear 57a and hence rotated together with gear 57a.
  • Gear 57b is a partially toothed indexing gear.
  • a gear 58b is engaged with or disengaged from gear 57b, i.e. gear 58b is intermittently driven.
  • Gear 58b in turn is engaged with gear 59b while gear 58a, which is coaxial with gear 58b and rotates with gear 58b, is engaged with gear 59a.
  • Gear 59a is fixed to the shaft of the first feed roller 52a, and gear 59b is fixed to the shaft of the second feed roller 52b. Consequently, the drive source from worm gear 24 is transmitted to the two feed rollers 52a and 52b. However, because the drive force is transmitted through gears 58a and 58b that have different numbers of teeth, ultimately the transmission results in different paper feed amounts.
  • the difference in paper feed amount can be set by changing the gear ratios of the intervening gears.
  • a roll paper holder for holding roll paper or a stacker for stacking cut sheets can be attached to the paper feed unit in order to enhance the printer's usefulness.
  • a device that transports print medium 60 in the direction of lines can be attached in the lower part of printer unit 10.
  • the embodiments described above use a motor 15 that rotates only in one direction and employ drive pin 3 to achieve a reciprocating movement of the carriage.
  • the drive input transmitted to the paper feed mechanism of the paper feed unit 50, 50' or 50'' is a rotational force in a fixed direction.
  • the drive input transmitted to the paper feed mechanism becomes a rotational force that repeatedly rotates in opposite directions in correspondence with the carriage's reciprocating motions.
  • paper feed rollers 52 and 53 must always rotate in one direction.
  • the paper feed mechanism in the paper feed unit must be provided with a conversion mechanism that transforms the rotational force that repeatedly rotates in opposite directions into a rotational force in one direction, either through the use of a one-way clutch or through the combination of several intermittent gears.
  • this invention places a carriage and a drive mechanism for a printer unit either at the rear or in the lower portion of the inkjet head and secures the paper feed unit to the printer unit on a detachable basis.
  • the printer can perform slip printing when the paper feed unit is removed, as well as performing normal printing, thus increasing its range of application.
  • Another advantage of the inkjet printer of the present invention is its facility for performing slip printing. Further, the provision of a print guide surface in the lower portion of the inkjet head enables the printer to hold the print medium securely for slip printing. This improves print quality and enables the printer to print on small papers.
  • the inkjet printer of the present invention can also offer a variety of paper feed units incorporating a wide range of functions.
  • the present invention can provide an inkjet printer capable of easily printing various print patterns on a variety of recording materials through the replacement of paper feed units to suit a particular objective.

Landscapes

  • Character Spaces And Line Spaces In Printers (AREA)
  • Handling Of Sheets (AREA)

Claims (10)

  1. Imprimante à jet d'encre comprenant:
    une unité (10) d'imprimante comportant
    un bâti (13),
    un chariot (12) monté coulissant sur le bâti (13),
    une cartouche (11) d'encre montée sur le chariot et ayant une tête (11a) de jet d'encre, et
    un mécanisme (15, 15a, 16 à 20) d'entraínement pour faire aller et venir le chariot, et
    une unité (50, 50', 50'') d'alimentation en papier ayant un mécanisme (51, 52, 53 ; 52', 53' ; 52a, 52b, 53a, 53b) d'alimentation en papier destinée à alimenter des supports d'impression destinés à être imprimés par la tête (11a) à jet d'encre,
    caractérisée en ce que le mécanisme d'entraínement est placé soit à l'arrière soit en dessous de la tête (11a) à jet d'encre de manière que les buses de la tête à jet d'encre soient immédiatement à une extrémité avant de l'unité d'imprimante ou à proximité d'une extrémité avant de l'unité d'imprimante, et
    - l'unité (50, 50', 50'') d'alimentation en papier est montée de manière amovible sur l'extrémité avant de l'unité (10) d'imprimante.
  2. Imprimante suivant la revendication 1, dans laquelle une surface (13a) de guidage de supports (60) rigides d'impression est prévue sur l'unité (10) d'imprimante, la surface de guidage étant exposée lorsque l'unité d'alimentation en papier est détachée et définissant un plan s'étendant en face des buses de la tête (11a) à jet d'encre et à distance de celles-ci d'une valeur déterminée à l'avance.
  3. Imprimante suivant la revendication 2, dans laquelle la surface (13a) de guidage est formée par le côté avant de la plaque (133) avant du bâti (13), cette plaque avant servant également de plaque de bridage pour monter l'unité (50, 50', 50'') d'alimentation en papier.
  4. Imprimante suivant l'une quelconque des revendications précédentes, dans laquelle l'unité (50, 50', 50'') d'alimentation en papier comporte
    des moyens (50a) de réception de l'encre destinés à recevoir des gouttelettes d'encre éjectées de la tête (11a) à jet d'encre en vue de recueillir ce qui sort des buses et
    des moyens (54) d'absorption d'encre communicant avec les moyens de réception d'encre.
  5. Imprimante suivant la revendication 4, dans laquelle les moyens (54) d'absorption d'encre comprennent un élément (54a) d'absorption recouvert d'une couche (55) extérieure en une matière imperméable à l'encre.
  6. Imprimante suivant la revendication 4 ou 5, dans laquelle les moyens (54) d'absorption d'encre sont montés de manière amovible sur l'unité (50, 50', 50'') d'alimentation en papier.
  7. Imprimante suivant l'une quelconque des revendications précédentes, comprenant en outre des moyens (22 à 24) pour accoupler avec entraínement le mécanisme (51, 52, 53 ; 52', 53' ; 52a, 52b, 53a, 53b) d'alimentation en papier au mécanisme (15, 15a, 16 à 20) d'entraínement.
  8. Imprimante suivant la revendication 7, dans laquelle le mécanisme (51, 52, 53 ; 52', 53' ; 52a, 52b, 53a, 53b) d'alimentation en papier de l'unité (50, 50', 50'') d'alimentation en papier comprend une unité (51) d'entraínement par intermittence destinée à transporter le support d'impression d'une quantité déterminée à l'avance à chaque cycle du mouvement de va-et-vient du chariot (12).
  9. Imprimante suivant l'une quelconque des revendications précédentes, dans laquelle l'unité (50', 50'') d'alimentation en papier comprend plusieurs mécanismes (52a, 53a, 52b, 53b) d'alimentation en papier, chacun associé à l'un, respectif, de plusieurs trajets d'alimentation, chaque mécanisme d'alimentation en papier étant apte à transporter des supports d'impression le long du trajet d'alimentation correspondant d'une quantité par cycle du mouvement de va-et-vient du chariot qui diffère de celle des autres mécanismes d'alimentation en papier.
  10. Imprimante suivant la revendication 9, dans laquelle les quantités d'alimentation en papier sont déterminées à l'avance sous la forme d'une combinaison d'une quantité d'alimentation en papier par ligne sensiblement égale à la hauteur d'une ligne d'impression telle que déterminée par la tête (11a) à jet d'encre et d'une quantité d'alimentation en papier supérieure à la hauteur d'une ligne d'impression, respectivement.
EP19940120468 1993-12-27 1994-12-22 Imprimante à jet d'encre Expired - Lifetime EP0659568B1 (fr)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP33332893 1993-12-27
JP333328/93 1993-12-27
JP33332893A JP3574168B2 (ja) 1993-12-27 1993-12-27 インクジェットプリンタ
JP22974594A JPH0890863A (ja) 1994-09-26 1994-09-26 印刷装置
JP229745/94 1994-09-26
JP22974594 1994-09-26

Publications (3)

Publication Number Publication Date
EP0659568A2 EP0659568A2 (fr) 1995-06-28
EP0659568A3 EP0659568A3 (fr) 1997-07-09
EP0659568B1 true EP0659568B1 (fr) 2000-07-05

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Application Number Title Priority Date Filing Date
EP19940120468 Expired - Lifetime EP0659568B1 (fr) 1993-12-27 1994-12-22 Imprimante à jet d'encre

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EP (1) EP0659568B1 (fr)
DE (1) DE69425121T2 (fr)

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JPH09234862A (ja) 1995-12-26 1997-09-09 Seiko Epson Corp インクジェットプリンタ及びその駆動方法
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JP2745577B2 (ja) * 1988-10-26 1998-04-28 セイコーエプソン株式会社 インクジェットプリンタの紙送り装置
EP0418793B1 (fr) * 1989-09-18 1996-01-17 Canon Kabushiki Kaisha Appareil d'enregistrement
DE69027651T2 (de) * 1989-10-27 1996-11-28 Canon Kk Papierzufuhrvorrichtung
JPH04226774A (ja) * 1990-12-29 1992-08-17 Canon Inc 自動給紙装置
JP3334185B2 (ja) * 1991-10-14 2002-10-15 セイコーエプソン株式会社 プリンタ
JP3070234B2 (ja) * 1992-03-31 2000-07-31 ブラザー工業株式会社 プリンタ

Also Published As

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EP0659568A2 (fr) 1995-06-28
EP0659568A3 (fr) 1997-07-09
DE69425121D1 (de) 2000-08-10
DE69425121T2 (de) 2001-03-22

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