EP0496987A1 - Feeding and delivery structure for cutform media in printer - Google Patents

Feeding and delivery structure for cutform media in printer Download PDF

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Publication number
EP0496987A1
EP0496987A1 EP91121369A EP91121369A EP0496987A1 EP 0496987 A1 EP0496987 A1 EP 0496987A1 EP 91121369 A EP91121369 A EP 91121369A EP 91121369 A EP91121369 A EP 91121369A EP 0496987 A1 EP0496987 A1 EP 0496987A1
Authority
EP
European Patent Office
Prior art keywords
cutform
medium
feeding
rollers
delivery structure
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
EP91121369A
Other languages
German (de)
French (fr)
Other versions
EP0496987B1 (en
Inventor
Hiroshi Ishida
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
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Seiko Epson Corp
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Filing date
Publication date
Application filed by Seiko Epson Corp filed Critical Seiko Epson Corp
Publication of EP0496987A1 publication Critical patent/EP0496987A1/en
Application granted granted Critical
Publication of EP0496987B1 publication Critical patent/EP0496987B1/en
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
    • 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

  • the present invention relates to a feeding and delivery structure for a cutform medium (e.g., a single sheet or film) for use with a printer having an automatic feeder for cutform media.
  • a cutform medium e.g., a single sheet or film
  • a conventional device disclosed in Japanese Examined Patent Publication No. 63-53091 and as shown in Fig. 4 of the present application, has a cutform medium fed by an automatic feeder 101 disposed upstream of a platen 105, and conveyed by the platen and pressing rollers 106, 107.
  • the cutform medium is printed by a printing head 108 opposed to the platen 105, delivered upwardly by delivery rollers 109, 110 and stored in a stacker 111.
  • Such a printer is suitable for successive (e.g., continuous) processing of cutform media.
  • a single cutform medium different from those stored in the automatic feeder 101 is to be processed, the processing and handling thereof is troublesome. To eliminate this inconvenience, a sheet passage 112 for manual feeding and a manual feed guide 102 have been provided.
  • the manual feed guide 102 for the cutform medium also serves as a rear face of the stacker adapted to store the cutform medium having been printed by the print head 108, and is located on the same plane as the printed cutform medium.
  • a problem arises in that, if the cutform medium has a tendency to roll-up, a tip 104a of the cutform medium is rolled into the sheet passage 112 due to a rear or trailing end of the cutform medium remaining in the sheet passage.
  • Another problem in the conventional feeding and delivery structure is that the surface of the delivered cutform medium 104 is brought into contact with the rear face of the stacker. Therefore, when the cutform medium is electrostatically charged in a low humidity environment, the attraction of the cutform medium 104 to the stacker face increases. Hence, a comparatively thin cutform medium is buckled due to a force couple generated by the conveying force of the delivery rollers 109, 110 (e.g., indicated by arrow a in Figure 4) and the carrying load on the rear face of the stacker (e.g., as indicated by arrow b), and cannot be properly conveyed by the delivery roller 109.
  • An object of the present invention is to solve the above-mentioned problems of the conventional device, and to provide a feeding and delivery structure for a cutform medium which enables the cutform medium to be safely and reliably delivered without being rolled into a sheet passage, even if it has a tendency to roll-up during its conveyance.
  • Another aspect of the present invention is to provide a feeding and delivery structure for a cutform medium which enables a comparatively thin cutform medium to be delivered reliably.
  • a feeding and delivery structure for a cutform medium in a printer in which an automatic feeder for cutform media is disposed at a rear portion of a platen, includes delivery rollers disposed at upper portions of the platen, a stacker bottom face member provided at a rear portion of the delivery rollers and forming a stacker for storing delivered cutform media, and guide members slideably attached in the horizontal printing direction to front faces of guide plates provided at the front of the automatic feeder.
  • the guide members guide the side edges and the front face of a manually fed cutform medium and have front faces forming a rear face of the stacker.
  • the guide members may also have ribs formed on their front faces.
  • Fig. 1 is a sectional view of a feeding and delivery structure for a cutform medium according to a first embodiment of the present invention.
  • Fig. 2 is a partial perspective view of the feeding and delivery structure for a cutform medium of the first embodiment of the present invention.
  • Fig. 3 is a sectional view of a second embodiment of the present invention.
  • Fig. 4 is a sectional view of a conventional feeding and delivery structure for a cutform medium.
  • a cutform medium 4 fed by an automatic feeder 1 is conveyed by a platen 5 and pressing rollers 6, 7. Thereafter, the cutform medium 14 is printed by a printing head 8 opposed to the platen 5, passes between delivery rollers 9, 10 located above (e.g., upstream) the platen, and is delivered along front faces 3a of guide members 3 and stored in a stacker formed by a bottom face member 11 and the front faces 3a of the guide members.
  • the bottom face member is secured at one end to a shaft supporting delivery roller 9.
  • the guide members (3) are slideably supported by guide plates 2 as evident from Figure 2 in a direction S perpendicular to the feed direction of the cutform medium 4 in order to allow adjustment to cutform media 4 of different width.
  • the guide members 3 thus provide adjustable opposite U-type channels facing one another for delivering the manually fed cutform medium 4 to the printer. These channels preferably end below and behind the upper end of the bottom face member 11 which together with the free parts of the front faces 3a of the guide members 3 form the stacker for the printed cutform medium 4, as shown in detail in Figure 2.
  • the cutform medium 4 When a cutform medium 4 different from that stored in the automatic feeder 1 is to be printed, the cutform medium 4 is manually fed, with its side edges and its front face being guided by the guide members 3 and front faces 2a of guide plates 2 disposed in front of the automatic feeder 1. The cutform medium 4 is guided to a normal position by guiding its edges. Similarly to when the cutform medium 4 is fed by the automatic feeder 1, it is subsequently carried and conveyed by the platen 5 and the pressing rollers 6, 7.
  • the cutform medium After the cutform medium is printed by the printing head 8, it passes between the delivery rollers 9, 10 located upstream of the platen 5 and is delivered along the front face portions 3a of the guide members. Even if the cutform medium 4 has a tendency to roll up due to its conveyance by the platen 5, since a sheet feed passage is separated from a sheet delivery passage by the guide members 3, an upper end 4a of the delivered cutform medium is prevented from rolling into the sheet feed passage again because of a cutform medium 4 remaining in the sheet feed passage. Thus, the delivered cutform medium can be stored reliably and easily in the stacker formed by the stacker bottom face member 11 and the front face portions 3a of the guide members.
  • FIG. 3 Another embodiment of the invention, as shown in Fig. 3, illustrates a feeding and delivery structure for a cutform medium in which ribs 12 are formed on the front faces 3a of the guide members 3.
  • the attraction of the cutform medium 4 carried along the guide members 3 to the stacker face is reduced since the frictional and electrostatic forces created (e.g., in a low humidity environment) are reduced.
  • a comparatively thin cutform medium may be employed as compared to that of the conventional system, and a stable sheet feed operation may be performed.
  • a manual sheet feed passage and a sheet delivery passage of the cutform medium are separated by guide members for guiding the edges and front face of the cutform medium, so that the cutform medium is prevented from rolling into the feed passage during the manual feeding thereof.
  • the ribs are formed on the front faces of the guide members, a thinner cutform medium can be reliably delivered.

Landscapes

  • Sheets, Magazines, And Separation Thereof (AREA)
  • Handling Of Cut Paper (AREA)
  • Manual Feeding Of Sheets (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
  • Pile Receivers (AREA)

Abstract

A feeding and delivery structure for a cutform medium (4) for use in a printer having a feeder (1) positioned upstream of a platen (5), includes rollers (9, 10) disposed adjacent to the platen (5), a stacker having a curved bottom face member (11) for storing delivered cutform media (4), guide plates (2) positioned adjacent the feeder, and guide members (3) slidingly attached to front faces (2a) of the guide plates (2) for guiding a manually fed cutform medium. The guide members (3) form a surface (3a) of the stacker, and may have ribs (12) formed thereon to decrease the carrying load of the cutform medium (4) after it is conveyed through the rollers.

Description

  • The present invention relates to a feeding and delivery structure for a cutform medium (e.g., a single sheet or film) for use with a printer having an automatic feeder for cutform media.
  • A conventional device, disclosed in Japanese Examined Patent Publication No. 63-53091 and as shown in Fig. 4 of the present application, has a cutform medium fed by an automatic feeder 101 disposed upstream of a platen 105, and conveyed by the platen and pressing rollers 106, 107. The cutform medium is printed by a printing head 108 opposed to the platen 105, delivered upwardly by delivery rollers 109, 110 and stored in a stacker 111. Such a printer is suitable for successive (e.g., continuous) processing of cutform media. However, when a single cutform medium different from those stored in the automatic feeder 101 is to be processed, the processing and handling thereof is troublesome. To eliminate this inconvenience, a sheet passage 112 for manual feeding and a manual feed guide 102 have been provided.
  • However, in the conventional feeding and delivery structure, the manual feed guide 102 for the cutform medium also serves as a rear face of the stacker adapted to store the cutform medium having been printed by the print head 108, and is located on the same plane as the printed cutform medium. Thus, a problem arises in that, if the cutform medium has a tendency to roll-up, a tip 104a of the cutform medium is rolled into the sheet passage 112 due to a rear or trailing end of the cutform medium remaining in the sheet passage.
  • Another problem in the conventional feeding and delivery structure is that the surface of the delivered cutform medium 104 is brought into contact with the rear face of the stacker. Therefore, when the cutform medium is electrostatically charged in a low humidity environment, the attraction of the cutform medium 104 to the stacker face increases. Hence, a comparatively thin cutform medium is buckled due to a force couple generated by the conveying force of the delivery rollers 109, 110 (e.g., indicated by arrow a in Figure 4) and the carrying load on the rear face of the stacker (e.g., as indicated by arrow b), and cannot be properly conveyed by the delivery roller 109.
  • An object of the present invention is to solve the above-mentioned problems of the conventional device, and to provide a feeding and delivery structure for a cutform medium which enables the cutform medium to be safely and reliably delivered without being rolled into a sheet passage, even if it has a tendency to roll-up during its conveyance.
  • This object is solved by the feeding and delivery structure of independent claims 1 or 9. Further advantageous features, aspects and details of the structure are evident from the dependent claims, the description and the drawings. The claims are intended to be understood as a first non-limiting approach of defining the invention in general terms.
  • Another aspect of the present invention is to provide a feeding and delivery structure for a cutform medium which enables a comparatively thin cutform medium to be delivered reliably.
  • According to the invention, a feeding and delivery structure for a cutform medium in a printer, in which an automatic feeder for cutform media is disposed at a rear portion of a platen, includes delivery rollers disposed at upper portions of the platen, a stacker bottom face member provided at a rear portion of the delivery rollers and forming a stacker for storing delivered cutform media, and guide members slideably attached in the horizontal printing direction to front faces of guide plates provided at the front of the automatic feeder. The guide members guide the side edges and the front face of a manually fed cutform medium and have front faces forming a rear face of the stacker. The guide members may also have ribs formed on their front faces.
  • Fig. 1 is a sectional view of a feeding and delivery structure for a cutform medium according to a first embodiment of the present invention.
  • Fig. 2 is a partial perspective view of the feeding and delivery structure for a cutform medium of the first embodiment of the present invention.
  • Fig. 3 is a sectional view of a second embodiment of the present invention.
  • Fig. 4 is a sectional view of a conventional feeding and delivery structure for a cutform medium.
  • In Figs. 1 and 2, a cutform medium 4 fed by an automatic feeder 1 is conveyed by a platen 5 and pressing rollers 6, 7. Thereafter, the cutform medium 14 is printed by a printing head 8 opposed to the platen 5, passes between delivery rollers 9, 10 located above (e.g., upstream) the platen, and is delivered along front faces 3a of guide members 3 and stored in a stacker formed by a bottom face member 11 and the front faces 3a of the guide members. The bottom face member is secured at one end to a shaft supporting delivery roller 9.
  • The guide members (3) are slideably supported by guide plates 2 as evident from Figure 2 in a direction S perpendicular to the feed direction of the cutform medium 4 in order to allow adjustment to cutform media 4 of different width. The guide members 3 thus provide adjustable opposite U-type channels facing one another for delivering the manually fed cutform medium 4 to the printer. These channels preferably end below and behind the upper end of the bottom face member 11 which together with the free parts of the front faces 3a of the guide members 3 form the stacker for the printed cutform medium 4, as shown in detail in Figure 2.
  • When a cutform medium 4 different from that stored in the automatic feeder 1 is to be printed, the cutform medium 4 is manually fed, with its side edges and its front face being guided by the guide members 3 and front faces 2a of guide plates 2 disposed in front of the automatic feeder 1. The cutform medium 4 is guided to a normal position by guiding its edges. Similarly to when the cutform medium 4 is fed by the automatic feeder 1, it is subsequently carried and conveyed by the platen 5 and the pressing rollers 6, 7.
  • After the cutform medium is printed by the printing head 8, it passes between the delivery rollers 9, 10 located upstream of the platen 5 and is delivered along the front face portions 3a of the guide members. Even if the cutform medium 4 has a tendency to roll up due to its conveyance by the platen 5, since a sheet feed passage is separated from a sheet delivery passage by the guide members 3, an upper end 4a of the delivered cutform medium is prevented from rolling into the sheet feed passage again because of a cutform medium 4 remaining in the sheet feed passage. Thus, the delivered cutform medium can be stored reliably and easily in the stacker formed by the stacker bottom face member 11 and the front face portions 3a of the guide members.
  • Another embodiment of the invention, as shown in Fig. 3, illustrates a feeding and delivery structure for a cutform medium in which ribs 12 are formed on the front faces 3a of the guide members 3. As a result, after the cutform medium 4 passes between the delivery rollers 9, 10, the attraction of the cutform medium 4 carried along the guide members 3 to the stacker face is reduced since the frictional and electrostatic forces created (e.g., in a low humidity environment) are reduced. Thus, even in a low humidity environment, a comparatively thin cutform medium may be employed as compared to that of the conventional system, and a stable sheet feed operation may be performed.
  • According to the feeding and delivery structure for a cutform medium of the present invention, a manual sheet feed passage and a sheet delivery passage of the cutform medium are separated by guide members for guiding the edges and front face of the cutform medium, so that the cutform medium is prevented from rolling into the feed passage during the manual feeding thereof.
  • Furthermore, since the ribs are formed on the front faces of the guide members, a thinner cutform medium can be reliably delivered.

Claims (9)

  1. A feeding and delivery structure for a cutform medium (4) adapted for use with a printer (8) having a platen (5) and an automatic feeder (1) for cutform media (4) disposed upstream of said platen (5), comprising:

       rollers (9, 10) disposed adjacent said platen (5) for conveying said cutform medium (4);

       a stacker for storing delivered cutform media, said stacker including a bottom face member (11) disposed downstream of said rollers (9, 10);

       guide plates (2) having front faces (2a) positioned at a first end of said automatic feeder; and

       guide members (3) slidingly attached to said guide plates (2) provided at said first end of said automatic feeder, said guide members (3) guiding a manually-fed cutform medium (4) and having front faces (3a) forming a surface of said stacker.
  2. A feeding and delivery structure for a cutform medium according to claim 1, further comprising ribs (12) formed on said guide members (3).
  3. A feeding and delivery structure according to claim 1 or 2 wherein said rollers (9, 10) are disposed downstream of said platen (5).
  4. A feeding and delivery structure according to one of the preceding claims wherein said guide members (3) are attached slidingly to said front faces of said guide plates (2), said guide members (3) being slidable in a direction (S) normal to a conveyance direction of said cutform medium (4).
  5. A feeding and delivery structure according to one of the preceding claims wherein said rollers comprise delivery rollers (9, 10).
  6. A feeding and delivery structure according to one of the preceding claims wherein said cutform medium (4) has a sheet feed passage and a sheet delivery passage, said guide members (3) separating said sheet feed passage of said cutform medium (4) from said sheet delivery passage.
  7. A feeding and delivery structure according to one of the preceding claims wherein a first end (4a) of a delivered cutform medium (4) is prevent from rolling into a sheet feed passage of said cutform medium by a subsequent cutform medium remaining in said sheet feed passage.
  8. A feeding and delivery structure according to one of claims 2 to 7, wherein said ribs (12) are formed on said front faces (3a) of said guide members (3) said ribs (12) reducing an attraction of said cutform medium (4) to said stacker after said cutform medium is conveyed by said rollers (9, 10).
  9. A feeding and delivery structure for a cutform medium adapted for use with a printer having a platen and a feeder positioned adjacent thereto, especially according to one of the preceding claims, comprising:

       rollers (9, 10) positioned adjacent to said platen (5) for conveying said cutform medium (4);

       a stacking member for receiving and stacking cutform media conveyed by said rollers (9, 10) said stacking member including a member (11) having an angular shape positioned adjacent to said rollers;

       a plurality of guide plates (2) provided adjacent to said feeder; and

       a guide mechanism (3) slidingly attached to said guide plates (2), for guiding a manually fed cutform medium (4), said guide mechanism forming a surface (3a) of said stacking member.
EP19910121369 1991-01-29 1991-12-12 Feeding and delivery structure for cutform media in printer Expired - Lifetime EP0496987B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP3008973A JP2867714B2 (en) 1991-01-29 1991-01-29 Paper feeder for cut-sheet media in printer
JP8973/91 1991-01-29

Publications (2)

Publication Number Publication Date
EP0496987A1 true EP0496987A1 (en) 1992-08-05
EP0496987B1 EP0496987B1 (en) 1995-05-31

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP19910121369 Expired - Lifetime EP0496987B1 (en) 1991-01-29 1991-12-12 Feeding and delivery structure for cutform media in printer

Country Status (4)

Country Link
EP (1) EP0496987B1 (en)
JP (1) JP2867714B2 (en)
DE (1) DE69110121T2 (en)
HK (1) HK38896A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2735069A1 (en) * 1995-06-09 1996-12-13 Seiko Epson Corp PRINTER FOR ADVANCING COATED SHEETS

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4289357B2 (en) 2006-02-03 2009-07-01 ブラザー工業株式会社 Image forming apparatus and paper feed cassette

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2151554A (en) * 1983-11-25 1985-07-24 Silver Seiko Apparatus for automatically feeding a print medium
US4747718A (en) * 1984-04-05 1988-05-31 Oki Electric Industry Co., Ltd. Automatic cut-sheet feeder for printers
EP0294055A1 (en) * 1987-05-18 1988-12-07 Orient Watch Co., Ltd. A paper feeding apparatus, E.G. for use in a printer
JPH02286269A (en) * 1989-04-26 1990-11-26 Seiko Epson Corp Printer

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2151554A (en) * 1983-11-25 1985-07-24 Silver Seiko Apparatus for automatically feeding a print medium
US4747718A (en) * 1984-04-05 1988-05-31 Oki Electric Industry Co., Ltd. Automatic cut-sheet feeder for printers
EP0294055A1 (en) * 1987-05-18 1988-12-07 Orient Watch Co., Ltd. A paper feeding apparatus, E.G. for use in a printer
JPH02286269A (en) * 1989-04-26 1990-11-26 Seiko Epson Corp Printer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2735069A1 (en) * 1995-06-09 1996-12-13 Seiko Epson Corp PRINTER FOR ADVANCING COATED SHEETS
US5734404A (en) * 1995-06-09 1998-03-31 Seiko Epson Corporation Printer for feeding curled sheets

Also Published As

Publication number Publication date
DE69110121D1 (en) 1995-07-06
JPH04246050A (en) 1992-09-02
HK38896A (en) 1996-03-15
DE69110121T2 (en) 1995-10-19
JP2867714B2 (en) 1999-03-10
EP0496987B1 (en) 1995-05-31

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