AU604338B2 - Printing machine adapted for reduction of its operating noise level - Google Patents
Printing machine adapted for reduction of its operating noise level Download PDFInfo
- Publication number
- AU604338B2 AU604338B2 AU18763/88A AU1876388A AU604338B2 AU 604338 B2 AU604338 B2 AU 604338B2 AU 18763/88 A AU18763/88 A AU 18763/88A AU 1876388 A AU1876388 A AU 1876388A AU 604338 B2 AU604338 B2 AU 604338B2
- Authority
- AU
- Australia
- Prior art keywords
- printing machine
- print support
- passage
- reduction
- 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.)
- Ceased
Links
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
- B41J29/08—Sound-deadening, or shock-absorbing stands, supports, cases or pads separate from machines
Landscapes
- Accessory Devices And Overall Control Thereof (AREA)
Description
Form COMMONWEALTH OF AUSTRALIA PATENTS ACT 1952-69 COMPETE PECIFICATION
(ORIGINAL)
Class lat. Clas Application Number.
Lodged: -qo'.nplete Specification Lodged: 0 a, V 0 A" 0Priority a 0 41 Published.
Accepted:
H
*9 *0 04R ~ated Art: Name of Applicant: Address of Applicant Actual Inventor' EOCIETE D 'ADi- C'TICZ E G2IZMS r)'2&UITCTE Z4T DE2CY'L1 S3AGEM 6 Avc-nuo d~lana 75783 Paris Codox 16, F'rance .yChcvrolllcr, 0..vcr.adn~ u2iii.~~" Address for Service.
EDWD. WATERS FONS, 50 QUEEN STREET, MELBOURNE, AUSTRALIA, 3000.
OPERATING NIOSE LEVEL The following statement is a full description of this invention, including the best me-thod of perforr-ing it known to PRINTING MACHINE ADAPTED FOR REDUCTION OF ITS OPERATING NOISE LEVEL BACKGROUND OF THE INVENTION The present invention relates to improvements in or to pcinting machines adapted to print a print support in sheet or strip form and possessino at leas.
cne inlet and/or outlet orifice for said print support, Ssaid improvements having the object of reducing the c ec Zto level of noise generated by the machine in the course of its operation.
The operating noises of a printing machine are essentially generated by the moving parts enclosad in the housing of the machine and they are transmitted to i the outside through the operational openings with which the housing is provided. One at least of these openings is constituted by the outlet orifice or the inlet and S' outlet orifices provided in the housing for the passage of the print support.
To attempt to avoid this propagation of noise, it is known for the inlet and/or outlet orifice to be provided with obturato%. means constituted by an elastically deformable and noise- damping material and arranged to close at least the greater portion of said orifice and to prevent the propagation to the outside l of the noises generated within the machine in the course of the operation of the latter without however interfering with the correct passage of the print support through the orifice.
However, this measure may result in defective operation of the machine by reason of the disturbance introduced by the obturator means, which are in contact -2with the print support in the course of its procession during the operation of the machine. It is therefore necessary to choose the constituent material of said obturator means particularly carefully, so that the latter can ensure effectively their mechanical obturator function whilst permitting the print support to pass freely through the orifices concerned. In 1 particular, experience shows that alveolar materials Swith large alveoles, which traditionally constitute
S
C
C 10 good acoustic barriers, are not convenient for this S. c specific application by reas' of the friction that Sac they exert on print supports of paper type being too Chigh and which retards the advance of the latter.
o It is therefore essentially an object of the o 15 invention to provide a technical solution which permits soundproofing mechanical obturators to be produced for o t the inlet and/or outlet orifices of the print support c in a printing machine without resulting thereby in disturbance of the operation of the latter.
GENERAL DESCRIPTION OF THE INVENTION To these ends, in a printing machine arranged to print a print support of sheet or of strip form and *o -possessing at least one inlet and/or outlet orifice for said print support, this inlet and/or outlet orifice being provided with obturator means constituted of an elastically deformable and noise- damping material and arranged to close at least the major portion of said orific, and to prevent the propagation outwards of the noises generated within the machine in the course of the operation of the latter without however interfering with the correct passage of the print support (3) through the orifice, it is provided according to the invention, for the constituent material of the absorber u_ LC -3means to be of a microporous alveolar flexible material, with a smooth surface and resistant to abrasion, possessing good vibration absorption properties.
Advantageously, the material used is a microporous alveolar foam, particularly a microporous polyurethane foam.
It can also be a microporous synthetic rubber.
The invention will be better understood on reading tl-, detailed description which follows of a preferred embodiment given purely by way of non- limiting example and in which reference is made to the accompanying drawing in which the single Figure is a very diagrammatic view in cross-section, of a portion of a printing machine arranged according to the invention.
DESCRIPTION OF A PREFERRED EMBODIMENT In the single Figure, only the portions of the machine necessary for comprehension of the invention are shown. In this Figure, it is seen that a portion of the housing 1 of the machine is provided, for example, with an inlet orifice 2 for the print support 3 which is still blank (arrow 4) and an outlet orifice 5 for the print support which has just been printed (arrow the other units of the machine which have not to be taken into consideration here are not shown.
Each of the orifices 2 and 5 is provided with obturator means constituted by a flexible strip or flap 7 (in a single unit or in several sections arranged end to end) constituted by an elastically deformable and noise- damping flexible material. This apron is fixed so that its free edge 8 can rest freely, in use, against the print support 3 in the course of the passage through and it is curvable inwards in the I -4direction of passage of the print support. In a way, each apron constitutes an obturator flap with automatic positioning which closes at least the greater portion of said orifice and which prevents the propagation outwards of the noises generated within the machine in the course of the operation of the latter, without however interfering with the correct passage of the print support through the oritices 2 and Each apron 7 is constituted from a microporous flexible cellular material which possesses a smooth surface, guaranteeing minimal friction on the print support in passage therethrough which is resistant z~co to abrasion, ensuring a respect for dimensions and of bi obturation quality throughout the lifespan of the i. aprons which possesses very good dim-esional stability which possesses very high vibration absorbing power, guaranteeing effective sound insulation which resists chemical agents (cleaning products for the machines, inks) and ozone (due to the prelsence of electric motors).
For this purpose, there will advantageously be usable a microporous alveolar foam, such as a microporous polyurethane foam, or a microporous synthetic rubber.
The geometry of each flap and in particular its thickness, is selected so that it possesses sufficient i stiffness to ensure effective isolation with respect to noise whilst having sufficient flexibility not to impede the appropriate advance of the print support.
Tests have shown that aprons having a thickness of some millimeters possess the required characteristics and procure a diminution of the noise of the order of several dB.
As is self- evident and as emerges besides already from the foregoing the invention is no way limited to those of its types of application and embodiments which have been more especially envisaged it encompasses, thereof on the contrary, all modifications.
0 :CO 0 OC coe
Claims (1)
- 4. Printing machine according to Claim 1, wherein Cers4i_ uent H41inkmaterial is a microporous synthetic rubber. J AI 4 Printing machine according to any one of Claims 1 to 4, wherein the obturator means comprise at least one pliant stri-p or apron of flexible m a te rial1, this apron being fixed so that its f ree rI-N ci ec- I edge can rest freely, in use, on the print spo in the course of passage there-through and being Inwards in t he direction o f passage o f *the print support. .11ATD TillIS 5L.1 DAY Or JULY, 19PB SOCIETE DAPPLICATIONS GENERALES D ELECTPIC.fi ET .DL NCANQ!4 SAIV'M FDWD. W7ATERS SONS' Patcnt Attornoys Queen Street, Melbourno, Vic- ?(000 Aus trali~i .3>
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8709549 | 1987-07-06 | ||
| FR8709549A FR2617766A1 (en) | 1987-07-06 | 1987-07-06 | PRINTER MACHINE ARRANGED FOR REDUCTION OF ITS SOUND OPERATING LEVEL |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| AU1876388A AU1876388A (en) | 1989-01-12 |
| AU604338B2 true AU604338B2 (en) | 1990-12-13 |
Family
ID=9352902
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU18763/88A Ceased AU604338B2 (en) | 1987-07-06 | 1988-07-06 | Printing machine adapted for reduction of its operating noise level |
Country Status (6)
| Country | Link |
|---|---|
| AU (1) | AU604338B2 (en) |
| BE (1) | BE1004160A3 (en) |
| ES (1) | ES2009318A6 (en) |
| FR (1) | FR2617766A1 (en) |
| GB (1) | GB2206537B (en) |
| IT (1) | IT1224975B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5970866A (en) * | 1994-09-12 | 1999-10-26 | Tohoku Ricoh Co., Ltd. | Printing machine with sound reducing apparatus |
| DE102004013963B4 (en) | 2004-03-19 | 2006-03-16 | Siemens Ag | printer |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1609435A (en) * | 1926-03-17 | 1926-12-07 | Underwood Typewriter Co | Typewriting machine |
| DE2551402C3 (en) * | 1975-11-15 | 1978-08-31 | Standard Elektrik Lorenz Ag, 7000 Stuttgart | Printer for web-shaped recording media in a housing |
| US4186230A (en) * | 1978-10-02 | 1980-01-29 | The Goodyear Tire & Rubber Company | Thermoplastic moldable latex foam mat |
| DE3227833C2 (en) * | 1982-07-26 | 1984-08-30 | Nixdorf Computer Ag, 4790 Paderborn | Device for soundproofing a machine housing opening |
| JPS60171186A (en) * | 1984-02-15 | 1985-09-04 | Canon Inc | Printer |
-
1987
- 1987-07-06 FR FR8709549A patent/FR2617766A1/en active Pending
-
1988
- 1988-07-04 BE BE8800771A patent/BE1004160A3/en not_active IP Right Cessation
- 1988-07-05 GB GB8815952A patent/GB2206537B/en not_active Expired - Lifetime
- 1988-07-05 ES ES8802106A patent/ES2009318A6/en not_active Expired
- 1988-07-05 IT IT8809439A patent/IT1224975B/en active
- 1988-07-06 AU AU18763/88A patent/AU604338B2/en not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| GB2206537A (en) | 1989-01-11 |
| FR2617766A1 (en) | 1989-01-13 |
| IT1224975B (en) | 1990-10-30 |
| GB2206537B (en) | 1991-07-10 |
| BE1004160A3 (en) | 1992-10-06 |
| ES2009318A6 (en) | 1989-09-16 |
| GB8815952D0 (en) | 1988-08-10 |
| IT8809439A0 (en) | 1988-07-05 |
| AU1876388A (en) | 1989-01-12 |
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