JPS61127377A - Reduction of noise in printer - Google Patents
Reduction of noise in printerInfo
- Publication number
- JPS61127377A JPS61127377A JP59249373A JP24937384A JPS61127377A JP S61127377 A JPS61127377 A JP S61127377A JP 59249373 A JP59249373 A JP 59249373A JP 24937384 A JP24937384 A JP 24937384A JP S61127377 A JPS61127377 A JP S61127377A
- Authority
- JP
- Japan
- Prior art keywords
- printer
- noise
- microphone
- amplifier
- output
- 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.)
- Pending
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
- B41J29/10—Sound-deadening devices embodied in machines
Landscapes
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Accessory Devices And Overall Control Thereof (AREA)
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明は、プリンタに関するもので、特にインパクト方
式のプリンタの騒音低減方式に関するものである。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a printer, and particularly to a noise reduction method for an impact type printer.
〈従来の技術〉
従来、インパクトプリンタの騒音低減の手段としては、
発生する騒音をできるだけプリンタ内部にとじ込め、外
部に田さないようにする方策が採られてきた。つまシ、
第１図に示すように、インパクト方式のプリンタは、カ
バーｌ。<Conventional technology> Conventionally, as a means of reducing noise in impact printers,
Measures have been taken to confine the generated noise as much as possible inside the printer and prevent it from emitting to the outside. Tsumashi,
As shown in FIG. 1, an impact printer has a cover l.
内にプラテン２と、印字ハンマ３を有しており、印字ハ
ンマ３をプラテン２に押し当てることによって、プラテ
ン２と印字ハンマ３の間にある印字用紙４に印字を行な
うものである。このとき、プラテン２、印字用紙４、印
字ハンマ３の３者による衝撃によって騒音が発生する。It has a platen 2 and a printing hammer 3 inside, and by pressing the printing hammer 3 against the platen 2, printing is performed on printing paper 4 located between the platen 2 and the printing hammer 3. At this time, noise is generated due to the impact caused by the platen 2, the printing paper 4, and the printing hammer 3.
従って、インパクト方式のプリンタの騒音は、印字ハン
マ３が印字用紙４に当る部分で発生するものであるが、
ここで発生した音は主に次に示す３つのルートによって
プリンタ外部に伝播する。つまり、第１図に示すように
、プリンタのカバーを通過あるいは、カバー１の共振に
よりカパー１表面から発生する音Ａと、プリンタのカバ
ーｌの間隙を通して直接伝播する音Ｂと、プリンタ外部
に出た部分の印字用紙４の振動によって発生する音Ｃと
である。Therefore, the noise of an impact printer is generated at the part where the printing hammer 3 hits the printing paper 4.
The sound generated here is mainly propagated to the outside of the printer through the following three routes. In other words, as shown in Figure 1, sound A that passes through the printer cover or is generated from the surface of cover 1 due to resonance of cover 1, sound B that directly propagates through the gap in printer cover l, and sound that is output to the outside of the printer. This is the sound C generated by the vibration of the printing paper 4 in the area where the print paper 4 vibrates.
ところで、従来、これらの騒音を低減する手段としては
、上記騒音Ａ及びＢＫ対しては、カバーｌを重くかつ厚
い材質にし、また間隙をなくすることによって、発生し
た騒音がなるべくカバーの外に出ないようにする。さら
に、上記騒音Ｃの対策としては、印字用紙４の経路を出
来るだけカバー１で被うなどの手段が採られておシ、ま
た場合によっては、プリンタ全体を防音ボックスの中に
入れることもある。By the way, conventional means for reducing these noises have been to make the cover 1 made of a heavy and thick material and to eliminate gaps so that as much of the generated noise as possible escapes from the cover. Make sure there is no such thing. Furthermore, as a countermeasure against the noise C, measures such as covering the path of the printing paper 4 with the cover 1 as much as possible are taken, and in some cases, the entire printer may be placed in a soundproof box. .
く解決すべき問題点〉
しかしながら、上記の対策によれば、プリンタ自体が大
きくなったシ、重くなったシして、操作性が悪くなると
いう問題点があった。Problems to be Solved> However, according to the above measures, the printer itself has become larger and heavier, resulting in poor operability.
本発明は、上記の問題点を解決するものであシ、プリン
タ自体の大型、重量化をきたさずに、プリンタの騒音を
効果的に低減しうるプリンタの騒音低減方式を提供する
ことを目的とする。The present invention has been made to solve the above problems, and it is an object of the present invention to provide a printer noise reduction method that can effectively reduce printer noise without increasing the size and weight of the printer itself. do.
く問題点の解決手段〉
上記本発明の目的を達成するための、本発明に係るプリ
ンタの騒音低減方式の構成は、マイクロホンと、このマ
イクロホンの出力を増幅すると共にその入出力間の位相
差を一定に制御する増幅器と、この増幅器の出力により
駆動されるスピーカとを内蔵してなるものである。Means for Solving the Problems> In order to achieve the above object of the present invention, the structure of the printer noise reduction method according to the present invention includes a microphone, amplifying the output of the microphone, and reducing the phase difference between the input and output. It has a built-in amplifier that is controlled at a constant level and a speaker that is driven by the output of this amplifier.
く作用〉
かかる構成によれば、印字によって発生した騒音をマイ
クロホンによって収音した後、入出力間の位相が制御さ
れた増幅器にて増幅して一定位相ずらした音がスピーカ
から放射されるため、印字による直接音が打ち消される
ことになシ、これによりプリンタ外部における騒音が低
減される。According to this configuration, the noise generated by printing is collected by the microphone, and then amplified by the amplifier whose phase is controlled between input and output, and the sound with a certain phase shift is emitted from the speaker. Direct sound from printing is canceled out, thereby reducing noise outside the printer.
〈実施例〉 次に、本発明の一実施例を図面に基づいて説明する。<Example> Next, one embodiment of the present invention will be described based on the drawings.
第２図は、本発明に係るプリンタの騒音低減方式の一実
施例を適用したプリンタを示す断面図である。なお、第
１図に示す部分と同一部分には同一参照符号を付しであ
る。FIG. 2 is a sectional view showing a printer to which an embodiment of the printer noise reduction method according to the present invention is applied. Note that the same parts as those shown in FIG. 1 are given the same reference numerals.
図中、５はマイクロホンであシ、印字によって発生する
騒音を収音するものである。６は増幅器であり、マイク
αホン５からの入力信号を一定位相ずらして増幅出力す
るものである。ここでは、その出力信号は入力信号の逆
位相になるように構成しである。７は増幅器６からの出
力信号を受けて駆動されるスピーカであシ、その拡大前
りは外部に放射される。In the figure, reference numeral 5 is a microphone, which collects noise generated by printing. Reference numeral 6 denotes an amplifier, which amplifies and outputs the input signal from the microphone α phone 5 with a certain phase shift. Here, the output signal is configured to be in opposite phase to the input signal. Reference numeral 7 denotes a speaker driven by receiving the output signal from the amplifier 6, and the signal before being expanded is radiated to the outside.
したがって、印字によって発生した騒音はマイクロホン
５によって一部収音され、この騒音の逆相の拡大前りが
スピーカ７から放射される。Therefore, part of the noise generated by printing is picked up by the microphone 5, and the opposite phase of this noise is emitted from the speaker 7.
これにより、騒音Ａとその逆相波大音りが合成されるた
め、必然的にプリンタの外部空間の騒音が低減されるこ
とになる。As a result, the noise A and its negative phase wave loud noise are synthesized, so that the noise in the space outside the printer is inevitably reduced.
なお、本実施例は、１対のマイクロホン５、増幅器６、
スピーカ７の例を示したが、これらの数及び設置場所は
プリンタ本体の形状等に合わせて適切に選定させられる
べきであシ、本実施例はその１例を示すものである。Note that in this embodiment, a pair of microphones 5, an amplifier 6,
Although an example of the speakers 7 has been shown, the number and installation location of these speakers should be appropriately selected according to the shape of the printer body, etc., and this embodiment shows one example thereof.
〈発明の効果〉
以上説明したように、本発明に係るプリンタの騒音低減
方式によれば、印字によって発生する騒音を中和するよ
うな音を放射することによって、プリンタ外部の空間に
おける騒音レベルを低下させるものであるから、小凰、
軽量で操作性に優れ、かつ騒音レベルの低いプリンタを
提供することができるという効果を奏する。<Effects of the Invention> As explained above, according to the printer noise reduction method according to the present invention, the noise level in the space outside the printer is reduced by emitting sound that neutralizes the noise generated by printing. Because it is something that lowers
It is possible to provide a printer that is lightweight, has excellent operability, and has a low noise level.
第１図は、インパクト方式のプリンタの一例を示す断面
図である。
第２図は、本発明に係るプリンタの騒音低減方式の一実
施例を適用したインパクト方式のプリンタを示す断面図
である。
エ・・・カバー ２・・・プラテン３・・・印
字ハンマー ４・・・印字用紙５・・・マイクロホン
６・・・増幅器７・・・スピーカFIG. 1 is a sectional view showing an example of an impact type printer. FIG. 2 is a sectional view showing an impact type printer to which an embodiment of the printer noise reduction method according to the present invention is applied. E... Cover 2... Platen 3... Printing hammer 4... Printing paper 5... Microphone 6... Amplifier 7... Speaker
Claims (1)
にその入出力間の位相差を一定に制御する増幅器と、該
増幅器の出力により駆動されるスピーカとを内蔵してな
ることを特徴とするプリンタの騒音低減方式。Noise reduction for a printer, characterized in that it incorporates a microphone, an amplifier that amplifies the output of the microphone and controls the phase difference between its input and output to be constant, and a speaker that is driven by the output of the amplifier. method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59249373A JPS61127377A (en) | 1984-11-26 | 1984-11-26 | Reduction of noise in printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59249373A JPS61127377A (en) | 1984-11-26 | 1984-11-26 | Reduction of noise in printer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61127377A true JPS61127377A (en) | 1986-06-14 |
Family
ID=17192054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59249373A Pending JPS61127377A (en) | 1984-11-26 | 1984-11-26 | Reduction of noise in printer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61127377A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5245385A (en) * | 1990-12-22 | 1993-09-14 | Ricoh Company, Ltd. | Image forming apparatus which reduces noise generated therefrom |
| US5267320A (en) * | 1991-03-12 | 1993-11-30 | Ricoh Company, Ltd. | Noise controller which noise-controls movable point |
| US5289147A (en) * | 1991-05-15 | 1994-02-22 | Ricoh Company, Ltd. | Image forming apparatus having system for reducing noise |
-
1984
- 1984-11-26 JP JP59249373A patent/JPS61127377A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5245385A (en) * | 1990-12-22 | 1993-09-14 | Ricoh Company, Ltd. | Image forming apparatus which reduces noise generated therefrom |
| US5267320A (en) * | 1991-03-12 | 1993-11-30 | Ricoh Company, Ltd. | Noise controller which noise-controls movable point |
| US5289147A (en) * | 1991-05-15 | 1994-02-22 | Ricoh Company, Ltd. | Image forming apparatus having system for reducing noise |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6385321B1 (en) | Reactive sound absorber | |
| WO2001063594A3 (en) | Active noise reduction along the direction of propagation of the sound from the primary source | |
| JPS61127377A (en) | Reduction of noise in printer | |
| JP2009218687A (en) | Noise cancel type headphone | |
| JP2781193B2 (en) | Active noise canceller | |
| KR20220163357A (en) | noise canceling headphones | |
| JP2012217015A (en) | Loudspeaker device and electronic apparatus | |
| JP2514732B2 (en) | Speaker system bass booster | |
| JPH01282996A (en) | Detection driving system in noise eliminating device | |
| US6522757B1 (en) | Bass intensification device for speaker system | |
| JP2601418Y2 (en) | Electronic silencer and audio playback device with electronic silencer | |
| JP2786285B2 (en) | Active noise canceller | |
| JP2560618Y2 (en) | Speaker system | |
| JP2620050B2 (en) | Active noise control system speaker device | |
| ATE226781T1 (en) | LOW TONE MEMBRANE SPEAKER | |
| JP2824076B2 (en) | Active noise canceller | |
| JPH02224499A (en) | Active noise canceler | |
| JPH0456499A (en) | Active noise canceler | |
| JPH05223334A (en) | Active noise canceler | |
| JPH0470097A (en) | Noise eliminating device | |
| JPH03274895A (en) | Active noise canceller | |
| JPS595799A (en) | Vibration-resistant microphone | |
| JPH0553587A (en) | Device noise cancellation system | |
| JPH06308974A (en) | Active muffler | |
| JPH05130688A (en) | Speaker device |