EP2216183A1 - Automatische Öffnungsvorrichtung am Papierende für Thermodrucker - Google Patents

Automatische Öffnungsvorrichtung am Papierende für Thermodrucker Download PDF

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Publication number
EP2216183A1
EP2216183A1 EP09425046A EP09425046A EP2216183A1 EP 2216183 A1 EP2216183 A1 EP 2216183A1 EP 09425046 A EP09425046 A EP 09425046A EP 09425046 A EP09425046 A EP 09425046A EP 2216183 A1 EP2216183 A1 EP 2216183A1
Authority
EP
European Patent Office
Prior art keywords
gear wheel
opening device
automatic opening
paper
rotation
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.)
Withdrawn
Application number
EP09425046A
Other languages
English (en)
French (fr)
Inventor
Alberto Campanini
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.)
Custom Engineering SpA
Original Assignee
Custom Engineering SpA
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 Custom Engineering SpA filed Critical Custom Engineering SpA
Priority to EP09425046A priority Critical patent/EP2216183A1/de
Publication of EP2216183A1 publication Critical patent/EP2216183A1/de
Withdrawn legal-status Critical Current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
    • B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
    • 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
    • B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
    • B41J29/46—Applications of alarms, e.g. responsive to approach of end of line
    • B41J29/48—Applications of alarms, e.g. responsive to approach of end of line responsive to breakage or exhaustion of paper or approach of bottom of paper

Definitions

  • the invention refers to an automatic opening device at the end of the paper in the thermal printers.
  • the approach of paper end is reported by one or more lines of different colours on the final part of the paper roll. To appear of the beginning of the coloured lines, often, the roll is changed with waste of the no used thermal paper. This repeated preventive substitution, for example in a supermarket, depending on the cash desk operativeness and for the number of cash desks in operation, determines a high thermal paper waste.
  • Other systems are known to signal the paper end via warning light onto the printer and/or signalling to monitor. To notice the warning light or the signalling to monitor may be difficult and may increase the times of thermal paper change.
  • Figure 4 is view of the parts which generate the unfastening.
  • sheet 3 figure 5 is perspective view with section parts of the main rotating devices in the step of fastened cover.
  • Figure 6 is perspective view with section part of the main rotating devices in the step of unfastening cover.
  • sheet 4 figure 7 is perspective view of a printer with the invented device in step of automatic opening of the cover at the thermal paper end.
  • the figure 8 is perspective view of a paper with the invented device with the cover opened so to fit in a new thermal paper roll.
  • the printer consists of a printing roll 1 inserted into a cover 2 equipped with and automatic opening device 3 that determines the cover opening at the paper end.
  • said automatic opening device 3 consists of a paper end sensor 4 connected to an electric motor 5.
  • the paper end sensor 4 starts the electric motor reversed its direction of rotation in comparison with the direction of rotation had during the printing step.
  • the electric motor 5 is equipped with a gear wheel 6 placed onto a drive shaft.
  • the gear wheel 6 is connected to a timing belt 7.
  • the timing belt 7 drags a further gear wheel 8.
  • This third gear wheel 10 engages onto an other gear wheel 11 integral with to the outside protruding part 12 of the printing roll 13.
  • At the other end of the printing roll 13 is present an other gear wheel 14.
  • Said gear wheel 14, so placed onto the other side of the thermal printer, is placed onto a pin 15.
  • a radial bearing 16 is present that gives the angular motion only in a direction of rotation.
  • Said radial bearing 16 in the normal step of printing lets free the gear wheel 14 but, when the printing roll 13 rotates in the opposite direction in comparison to the direction of rotation had during the printing, comes to move the gear wheel 14 that puts in rotation an other gear wheel 17.
  • a cam 20 is provided on the same shaft and integral with the gear wheel 19 . Said cam 20 is in touch with the pin 21 of the unfastening teeth 22 that open/close the cover 2.
  • the unfastening teeth 22 are inserted in the manual unfastening levers 23 to help the lifting of the cover 2. Then, the cover 2 has hinges 24 with coil springs 25.
  • the end paper sensor 4 comes to activate.
  • the end paper sensor 4 gives, by normal connections and parts, the impulse to the electric motor 5.
  • the impulse given to the sensor 4 starts the inversion of the rotation motion of the electric motor 5 normally used for the rotation of the printing roll.
  • the motion inversion determines, by the rotation given to the printing roll 13 to the gear wheel 14, the rotation of the gear wheels 17, 18 and 19 with rotation of the cam 20. Said cam 20 rotating moves the pin 21 and actuates the unfastening of the unfastening teeth 22 connected with the unfastening levers 23.
  • the cover 2 comes to unfasten and it is put in opening by the springs 25. With the cover in opening, with the same actuated in automatic way, it is put in evidence to the operator the lack of thermal paper inside the printer. So it is immediate and quick the withdrawal of the paper support and the fitting up of a new thermal paper roll inside the printer. In this way the thermal paper is used in whole and such us the cover 2, that contains the printing roll 1, immediately raises when the paper is ended, it is not possible the friction of the thermal head onto the printing roll 1 so avoiding to damage the same head. Inserted the paper the cover 2 is closed again so that the pin 21 crawls onto the cam 20 making it rotates. In this way the printer turns in working while the automatic opening device 3 prepares itself for the subsequent opening when the paper will be ended again.
  • the automatic opening device can be provided with electrical, mechanical or pneumatic components and motorized to be realized to the person skilled in the art on the base of the details described and illustrated and with the same aim, substituting the technical details with other equivalent and with the same functions.

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EP09425046A 2009-02-10 2009-02-10 Automatische Öffnungsvorrichtung am Papierende für Thermodrucker Withdrawn EP2216183A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP09425046A EP2216183A1 (de) 2009-02-10 2009-02-10 Automatische Öffnungsvorrichtung am Papierende für Thermodrucker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09425046A EP2216183A1 (de) 2009-02-10 2009-02-10 Automatische Öffnungsvorrichtung am Papierende für Thermodrucker

Publications (1)

Publication Number Publication Date
EP2216183A1 true EP2216183A1 (de) 2010-08-11

Family

ID=41806585

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09425046A Withdrawn EP2216183A1 (de) 2009-02-10 2009-02-10 Automatische Öffnungsvorrichtung am Papierende für Thermodrucker

Country Status (1)

Country Link
EP (1) EP2216183A1 (de)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60203479A (ja) * 1984-03-28 1985-10-15 Konishiroku Photo Ind Co Ltd サ−マルプリンタ
JPS62187058A (ja) * 1986-02-13 1987-08-15 Tamura Electric Works Ltd プリンタの紙端センサ取付位置補正装置
EP0794065A2 (de) * 1996-03-06 1997-09-10 Seiko Epson Corporation Drucker mit Papierendedetektion
US6118469A (en) * 1995-11-21 2000-09-12 Seiko Epson Corporation Thermal printer
EP1145861A2 (de) * 2000-04-12 2001-10-17 Seiko Epson Corporation Druckvorrichtung mit Papierdetektor
EP1810834A1 (de) * 2006-01-18 2007-07-25 Custom Engineering SpA Automatische Öffnungsvorrichtung zur Papierzufuhr in einem Drucker

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60203479A (ja) * 1984-03-28 1985-10-15 Konishiroku Photo Ind Co Ltd サ−マルプリンタ
JPS62187058A (ja) * 1986-02-13 1987-08-15 Tamura Electric Works Ltd プリンタの紙端センサ取付位置補正装置
US6118469A (en) * 1995-11-21 2000-09-12 Seiko Epson Corporation Thermal printer
EP0794065A2 (de) * 1996-03-06 1997-09-10 Seiko Epson Corporation Drucker mit Papierendedetektion
EP1145861A2 (de) * 2000-04-12 2001-10-17 Seiko Epson Corporation Druckvorrichtung mit Papierdetektor
EP1810834A1 (de) * 2006-01-18 2007-07-25 Custom Engineering SpA Automatische Öffnungsvorrichtung zur Papierzufuhr in einem Drucker

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