EP0798114B1 - A stamp producing device - Google Patents

A stamp producing device Download PDF

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Publication number
EP0798114B1
EP0798114B1 EP97302073A EP97302073A EP0798114B1 EP 0798114 B1 EP0798114 B1 EP 0798114B1 EP 97302073 A EP97302073 A EP 97302073A EP 97302073 A EP97302073 A EP 97302073A EP 0798114 B1 EP0798114 B1 EP 0798114B1
Authority
EP
European Patent Office
Prior art keywords
stamp
producing device
laser light
heating unit
unit
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
EP97302073A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0798114A3 (en
EP0798114A2 (en
Inventor
Tetsuji C/O Brother Kogyo K.K. Fuwa
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.)
Brother Industries Ltd
Original Assignee
Brother Industries Ltd
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Filing date
Publication date
Application filed by Brother Industries Ltd filed Critical Brother Industries Ltd
Publication of EP0798114A2 publication Critical patent/EP0798114A2/en
Publication of EP0798114A3 publication Critical patent/EP0798114A3/en
Application granted granted Critical
Publication of EP0798114B1 publication Critical patent/EP0798114B1/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
    • B41D—APPARATUS FOR THE MECHANICAL REPRODUCTION OF PRINTING SURFACES FOR STEREOTYPE PRINTING; SHAPING ELASTIC OR DEFORMABLE MATERIAL TO FORM PRINTING SURFACES
    • B41D7/00—Shaping elastic or deformable material, e.g. rubber, plastics material, to form printing surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41K—STAMPS; STAMPING OR NUMBERING APPARATUS OR DEVICES
    • B41K1/00—Portable hand-operated devices without means for supporting or locating the articles to be stamped, i.e. hand stamps; Inking devices or other accessories therefor
    • B41K1/02—Portable hand-operated devices without means for supporting or locating the articles to be stamped, i.e. hand stamps; Inking devices or other accessories therefor with one or more flat stamping surfaces having fixed images

Definitions

  • the present invention relates to a production method and to a device for producing, using the production method, a stamp capable of consecutive stamp printing.
  • One example of a stamp capable of consecutive stamp printing includes a porous resin plate having open cells.
  • a thin-film layer for blocking transmission of ink is formed at certain areas on a surface of the resin plate. Areas of the surface not formed with the thin-film layer protrude above the thin film layer and correspond to the print portion of the stamp. Because the open cells exposed at the print portion are in connection with the interior portion of the resin plate, ink impregnating the resin plate can be transmitted to the print portion.
  • Japanese Laid-Open Patent Publication No. HEI-6-24114 describes a method for forming the print portion of the stamp into a protruding shape corresponding to characters, figures, and like to be printed.
  • a photosensitive resin matrix is produced with the characters and figures shaped in an indented form.
  • the matrix is then preheated and brought into contact with the surface of the porous resin plate.
  • the porous resin plate melts and solidifies as a result to form a thin film layer for preventing transmission of ink. Areas of the surface of the resin plate form the print portion, which allows transmission of ink.
  • EP-A-644 059 discloses a seal manufacturing apparatus wherein physical stimuli such as ultraviolet rays or laser beams act on areas of a surface of a resin block. The physical properties of these areas are changed and the exposed or non-exposed areas of the resin block can then be removed by the action of a predetermined fluid leaving either the exposed or the non-exposed areas standing proud. The resin block can then be used as a seal.
  • physical stimuli such as ultraviolet rays or laser beams act on areas of a surface of a resin block.
  • the physical properties of these areas are changed and the exposed or non-exposed areas of the resin block can then be removed by the action of a predetermined fluid leaving either the exposed or the non-exposed areas standing proud.
  • the resin block can then be used as a seal.
  • a stamp producing device for use with a plate-shaped and porous stamp member with at least one surface having open cells, the device comprising:
  • the controller selectively drives the heating unit according to the print pattern and drives the drive unit to generate relative movement following the surface of the plate-shaped stamp member in order to melt and solidify a flat portion corresponding to the print pattern, thereby forming the thin film layer for preventing transmission of ink and also forming the print portion for allowing transmission of ink at flat portions not corresponding to the print pattern. Therefore, a plate-shaped stamp can be produced.
  • the thin film layer for preventing transmission of ink formed by melting and solidifying the flat portions of the stamp member is formed by being irradiated with laser light. Print portions are formed by the areas not irradiated by the laser light.
  • the thin film layer for preventing transmission of ink can be formed across the entire surface of the plate-shaped stamp member.
  • Fig. 1 is a perspective view showing a porous resin plate 20 used in the device according to the present embodiment.
  • the porous resin plate 20 is a thin plate formed from a porous resin, such as polyurethane and polyethylene, and is filled with fine open cells. Because the porous resin plate 20 is filled with open cells, it is capable of transmitting ink from one surface to another.
  • Fig. 2 is a perspective view showing a pre-stamp member 27 formed by pretreating the porous resin plate 20.
  • the pre-stamp member 27 includes side surfaces 23 through which ink is not transmissible. The side surfaces 23 are formed by pressing a preheated mold against the side of the porous resin plate 20 to melt and solidify the open cells exposed thereon.
  • the pre-stamp member 27 also includes a pre-stamp surface 22A forming an ink transmissible region from which a stamp surface 22 can be formed in a manner to be described later.
  • Fig. 3 is a perspective view showing a stamp member 28 formed by forming a stamp surface 22 on the pre-stamp member 27 shown in Fig. 2.
  • the stamp surface 22 of the stamp member 28 includes an ink transmission portion 24 and an ink non-transmission portion 25 formed by processing the stamp surface 22A in a manner to be described later according to a predetermined print pattern.
  • Fig. 4 is a side view in partial cross section showing a stamp unit 35 in which the stamp member 28 is used.
  • Fig. 5 is a perspective view showing the stamp unit 35.
  • the stamp unit 35 has a case 31 formed from plastic or metal and a grip 34 provided to the upper surface of the case 31.
  • a guide group 31 and an engagement portion 32 are provided to the side surface of the case 31.
  • the stamp member 28 is housed in the case 31.
  • the side surfaces 23 of the stamp member 28 and an inner wall 31a of the case 31 are attached together by an adhesive layer 30 so that the stamp member 28 is fixed to the case 31 with the stamp surface 22 exposed.
  • An ink supporting layer 32 formed from a sponge and the like is placed inward from the stamp member 28 (that is, above the stamp member 28 as viewed in Fig. 4). Ink is continuously supplied from the ink support layer 32 to the stamp member 28. Further, a lattice-shaped support member 33 is provided to the upper portion of the ink support layer 32. The lattice-shaped support member 33 supports the stamp member 28 in a flush condition when a stamp is being printed.
  • the stamp producing device 50 includes: a main frame 55; a keyboard 51 provided at a front surface of the main frame 55; a display portion 52; a stamp producing portion 110 provided at the rear portion of the main frame 55; and a control system 100 provided in the main frame 55.
  • the keyboard 51 is provided with a stamp production key 56 and a variety of function keys, such as character keys and symbol keys.
  • the display portion 52 is a liquid crystal display capable of displaying frames, a plurality of lines of character trains, and the like corresponding to a pattern inputted via the keyboard 51 as the subject of printing.
  • An insertion port 54 for inserting the stamp unit 35 into the stamp producing device 50 is formed in the side surface of the frame 55, that is, at the left side in the frame 55 as viewed in Fig. 6.
  • a pair of guide bars 65 are disposed extending in the widthwise direction of the stamp producing device 50.
  • a movable member 60 for supporting the stamp unit 35 is supported on the guide bars 65 so as to be freely slidably movable from the insertion port 54 to the stamp producing portion 110 in the widthwise direction of the stamp producing device 50.
  • One end of a wire 63 is fixed to a protruding portion 67 provided at the side surface of the movable portion 60.
  • the wire 63 is wrapped around a pair of pulleys 62, only one of which is shown in Fig. 6.
  • the pulleys 62 are attached directly to a transport motor 59 (not shown in Fig. 6).
  • the movable member 60 is configured to be slidingly movable along the pair of guide bars 65 in an auxiliary scanning direction according to rotation of the transport motor 59.
  • the pre-stamp member 27 is preattached to the stamp unit 35 and the stamp unit 35 is mounted in the stamp producing device 50.
  • the stamp unit 35 is mounted with the pre-stamp member 27 facing upward, as shown in Fig. 6, onto the movable member 60 when the movable member 60 is positioned at the side of the insertion port 54.
  • a transparent plate 66 is shown in the drawings above the pre-stamp member 27 of the stamp unit 35.
  • Pawl portions 68 capable of resiliently deforming are provided at four positions on side surfaces of the transparent plate 66.
  • the transparent plate 66 can be fixed pressed against the pre-stamp member 27 by engaging the pawl portions 68 into the upper surface of the case 31 while the transparent plate 66 is in confrontation with the pre-stamp member 27.
  • the ink non-transmission portion 25 of the pre-stamp member 27 can be more easily melted when irradiated by laser light while compressed by the transparent plate 66 than while not compressed by the transparent plate 66.
  • Guide grooves 41 are formed in the sides of the grip 34.
  • An engagement portion 42 is formed in the stamp unit 35.
  • a C-shaped insertion portion 60a is formed in the movable member 60.
  • Inward facing guide rails 61 for engaging with guide grooves 41 are formed in confrontation with each other on inner surfaces 601, 602 of the insertion portion 60a.
  • Two pairs of rollers, only one pair 162, 163 of which are shown in Fig. 7, are provided in the inner surfaces 601, 602 of the insertion portion 60a so as to protrude into the insertion portion 60a.
  • the position of the movable member 60 of the stamp unit 35 in the vertical direction is determined by inserting the stamp unit 35 into the movable member 60 while engaging the guide rails 61 into the guide grooves 41 of the grip 34 of the stamp unit 35 in which the transparent plate 66 is mounted as described above.
  • the position of the stamp unit 35 in the front and rear directions is determined by urging force of by the roller 162 against the grip 34.
  • the position of the stamp unit 35 in the auxiliary scanning direction that is the leftward and rightward direction as indicated by an arrow X in Fig. 7, is determined by engagement of the roller 163 in the engagement portion 42 formed in the case 31.
  • the stamp producing portion 110 of the stamp producing device 50 of the present embodiment is formed from a laser light scanner device 120.
  • the laser light scanner device 120 has a substantially rectangular shape in plan view.
  • a box-shaped unit case 121 is formed from a floor wall 121a and a peripheral wall 121b provided in an upright posture at the periphery of the wall 121a.
  • a scanner motor 123 is fixed to an indented portion at the front edge of the unit case 121.
  • a hexagonal mirror 124 having a hexagonal shape in plan view is fixed rotatable within a horizontal plane on a drive shaft (not shown in the drawings) of the scanner motor 123.
  • An indentation is formed at the substantial center, that is, in the front and rear direction, of the side portion of the unit case 121.
  • a laser light source 125 is provided in the peripheral wall 121b at the indentation. The laser light source 125 is aligned so that laser light LB emitted therefrom falls incident on the hexagon mirror 124.
  • a compressor lens 127, a cylinder lens 128, and an ultrasonic light modulator 129 are disposed between the laser light source 125 and the hexagon mirror 124, that is, along a radiation pathway of the laser light LB.
  • a first F- ⁇ lens 130 and a second F- ⁇ lens 131 extending in the leftward and rightward direction are disposed at the left side center of the unit case 121, that is, as viewed in Fig. 9, and to the rear of the hexagon mirror 124.
  • the first F- ⁇ lens 130 and the second F- ⁇ lens 131 are disposed with a predetermined distance therebetween in the frontward and rearward direction.
  • a reflection mirror 132 for reflecting laser light LB transmitted through the second F- ⁇ lens 131 downward is disposed extending in the leftward and rightward direction directly to the rear of the second F- ⁇ lens 131.
  • the unit case 121 is covered by a plate-shaped cover member 121d.
  • the pre-stamp member 27 be formed from a material whose surface melts and solidifies at temperatures between 60°C and 250°C.
  • a material that melts at less than 60°C might melt during storage.
  • a material that melts at greater than 250°C would require too much energy and time to melt. Also, control would be difficult.
  • the laser light source 125 be capable of supplying energy for heating the pre-stamp surface 22A of the pre-stamp member 27 to between 60°C and 270°C.
  • Examples for the laser lights source 125 would be a carbon dioxide gas laser, a YAG laser, an argon laser, a helium/neon laser, a semiconductor laser.
  • control system including a control portion 80 for controlling drive of the stamp producing portion 110 and the display portion 52 will be explained while referring to Fig. 10. It should be noted that the control system 100 is similar to control systems used in general laser printers so will be described only briefly here.
  • the control portion 80 includes: a CPU 81; a ROM 82 storing a variety of control programs; a RAM 83 having a variety of data memory regions; a timing control circuit (TC) 84 for generating timing signals for performing reading and writing of inputted data into and out of buffers; a video interface (V I/F) 86; and a keyboard interface (K I/F) 87 for receiving signals from the keyboard 51.
  • the video interface 86 has a scanner buffer and outputs print information converted into bit image data to a DC controller circuit 118 for controlling the serial print portion 110.
  • a bus 88 interconnects the components of the control portion 80.
  • a drive circuit 72 for driving an LCD 71 of the display portion 51 is connected to the CPU 81 by the bus 88.
  • a variety of components are connected to a DC controller circuit 118 for controlling the stamp producing portion 110, including: a drive circuit 114 for driving the transport motor 59 to move the movable member 60; a drive circuit 115 for driving the laser light source 125; a drive circuit 116 for driving the scanner motor 123 for rotating the hexagon mirror 124; and a drive circuit 117 for driving the ultrasonic light modulator 129 to modulate the laser light LB.
  • the ROM 82 stores a control program for controlling overall operation of the stamp producing device 50 and also stores a dictionary for performing kana to kanji conversion.
  • the ROM 82 also stores, in correspondence with code data, dot pattern data for a plurality of characters to be printed.
  • the ROM 82 also stores, in correspondence with code data, dot pattern data for displaying a plurality of characters to be printed.
  • the RAM 83 is provided with an input buffer for storing inputted data, a print data buffer for storing dot pattern data for printing, and a variety of counters and registers.
  • the user inserts a stamp unit 35 mounted with a pre-stamp member 27, which is not yet formed with a stamp surface 22, into the insertion port 54 and mounts it to the movable member 60.
  • stamp producing operations are started on the pre-stamp member 27. That is, the CPU 81 transmits a drive signal to the transport motor drive circuit 114 via the DC controller circuit 118 to drive the transport motor 59.
  • the movable member 60 is transported to the stamp producing device 10 via the wire 63 and following the guide rails 61.
  • the CPU 81 transmits a drive signal to the laser light source drive circuit 115 via the DC controller circuit 118, whereupon the laser light source 135 emits the laser light LB.
  • the CPU 81 transmits a print dot pattern signal to the ultrasonic light modulator drive circuit 117, whereupon the ultrasonic light modulator 129 selectively modulates the laser light LB so that portions of laser light LB corresponding to the ink non-transmission portion 25, which does not form the printing portion of the stamp member 28, propagate toward the hexagonal mirror 124 and so that portions of the laser light LB corresponding to the ink transmission potion 24 propagate away from the hexagonal mirror 124. In this way, on and off condition of the laser light LB can be modulated.
  • the CPU 81 transmits a drive signal to the scanner drive motor signal 116 to drive the scanner motor 123 to rotate the hexagon mirror 124.
  • the laser light LB After passing through the compressor lens 127, the ultrasonic light modulator 129, and the cylinder lens 128, the laser light LB falls incident onto the hexagon mirror 124. Because the hexagon mirror 124 is rotating at a fixed speed, the incident laser light LB is reflected from each mirror surface at a predetermined angle and scanned in a main scanning direction, which is perpendicular to the auxiliary scanning direction, across a scanning range ⁇ , shown in Fig. 8, extending from a scanning start phase (indicated by the laser light LBS) to a scanning end phase (indicated by the laser light LBE). After, passing through the first and second F- ⁇ lenses 130, 131, the laser light LB is reflected downward by the reflection mirror 132.
  • the reflected laser light LB passes through a rectangular slit 121c formed in the floor 121a of the unit case 121 so as to extend in the leftward and rightward direction.
  • the laser light LB is transmitted through the transparent plate 66 pressing on the upper surface of the pre-stamp member 27 in the stamp unit 35 set on the movable member 60.
  • the laser light LB irradiates the upper surface of the pre-stamp member 27, thereby melting and solidifying the pre-stamp surface 22A. By repeating this operation, a thin film layer for preventing transmission of ink is formed at the ink non-transmission portion 25.
  • the scan range ⁇ is formed longer than the length of the widthwise direction of the pre-stamp member 27. This is so that the thin film layer for preventing ink from passing through the ink non-transmission portion 25 can be formed by melting and solidifying the entire surface, including widthwise edges, of the pre-stamp member 27.
  • a stamp unit 35 provided with a stamp member 28 is completed by the operations described in detail above.
  • stamp member 28 By preparing the stamp member 28 using the stamp producing device 50 of the present embodiment, there is no need to prepare a matrix with characters or figures of the print surface formed from an indented photosensitive resin portion. There is also no need to heat the matrix to a specific temperature in order to melt the porous resin plate. Predetermined characters and image data can be edited while viewing the display so that a stamp having a print portion formed from desired characters and the like can be easily prepared.
  • the ink transmission portion 24 forms the character portion and the ink non-transmission portion 25 forms the portion without characters.
  • portions without characters can be formed by the ink transmission portion 24 and portions with characters can be formed by the ink non-transmission portion 25.
  • the portions without characters are formed by ink so that the character image is formed from a white area.
  • indentations can be formed at regions other than for desired picture elements so that ink can be prevented from clinging to non-picture element portions when the ink seeps.
  • the grip 34 is mounted in the insertion portion 60a of the movable member 60
  • the case 31 could be mounted in the insertion portion instead.
  • grooves would be formed in the case for engaging with the guide rails in the insertion portion.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)
  • Testing Of Coins (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
  • Image Analysis (AREA)
  • Electronic Switches (AREA)
  • Thermal Transfer Or Thermal Recording In General (AREA)
EP97302073A 1996-03-26 1997-03-26 A stamp producing device Expired - Lifetime EP0798114B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP69794/96 1996-03-26
JP6979496 1996-03-26
JP8069794A JPH09254513A (ja) 1996-03-26 1996-03-26 印判製造装置

Publications (3)

Publication Number Publication Date
EP0798114A2 EP0798114A2 (en) 1997-10-01
EP0798114A3 EP0798114A3 (en) 1997-10-08
EP0798114B1 true EP0798114B1 (en) 2001-10-04

Family

ID=13413016

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97302073A Expired - Lifetime EP0798114B1 (en) 1996-03-26 1997-03-26 A stamp producing device

Country Status (4)

Country Link
EP (1) EP0798114B1 (ja)
JP (1) JPH09254513A (ja)
AT (1) ATE206358T1 (ja)
DE (1) DE69707039T2 (ja)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6112662A (en) * 1996-10-16 2000-09-05 Brother Kogyo Kabushiki Kaisha Stamp unit
US5974969A (en) * 1998-02-04 1999-11-02 Brother Kogyo Kabushiki Kaisha Stamp unit with ink pack filled with ink
US5996493A (en) * 1998-03-09 1999-12-07 Brother Kogyo Kabushiki Kaisha Stamp unit protection element
JP3885348B2 (ja) * 1998-03-31 2007-02-21 ブラザー工業株式会社 印判製造装置
ES2199528T3 (es) * 1998-09-17 2004-02-16 Brother Kogyo Kabushiki Kaisha Unidad de sello.
JP4389281B2 (ja) * 1998-10-30 2009-12-24 ブラザー工業株式会社 スタンプユニット作成システム
US6460456B1 (en) 1999-03-31 2002-10-08 Brother Kogo Kabushiki Kaisha Stamp making apparatus and attachment thereof

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0542653A (ja) * 1991-08-12 1993-02-23 Mitsubishi Pencil Co Ltd レーザー加工によるゴム印製作方法
JPH0558015A (ja) * 1991-09-03 1993-03-09 Mitsubishi Pencil Co Ltd レーザー加工によるゴム印の製作法
JP3177036B2 (ja) * 1992-12-24 2001-06-18 三菱鉛筆株式会社 連続気泡を有するスポンジゴム印字体の製造方法
WO1994021469A1 (en) * 1993-03-15 1994-09-29 King Jim Co., Ltd. Seal manufacturing apparatus

Also Published As

Publication number Publication date
DE69707039T2 (de) 2002-02-14
EP0798114A3 (en) 1997-10-08
JPH09254513A (ja) 1997-09-30
EP0798114A2 (en) 1997-10-01
DE69707039D1 (de) 2001-11-08
ATE206358T1 (de) 2001-10-15

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