CA2272247A1 - Air filter for xerographic process office machines - Google Patents
Air filter for xerographic process office machines Download PDFInfo
- Publication number
- CA2272247A1 CA2272247A1 CA 2272247 CA2272247A CA2272247A1 CA 2272247 A1 CA2272247 A1 CA 2272247A1 CA 2272247 CA2272247 CA 2272247 CA 2272247 A CA2272247 A CA 2272247A CA 2272247 A1 CA2272247 A1 CA 2272247A1
- Authority
- CA
- Canada
- Prior art keywords
- xerographic
- particles
- machines
- air
- office
- 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.)
- Abandoned
Links
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
Abstract
Small particles suspended in the air are becoming increasingly widely known as causes of ill health and death. Several government reports place the death toll in the thousands every year.
These small particles come from a large range of sources, and occur both inside and outside buildings. In large, modern office buildings, exterior pollutants are largely removed by efficient air filtration mechanisms. Thus, the particles in this venue come from interior sources. Experience has shown that one of the major interior sources is office machines - specifically copiers and printers using the xerographic process.1 These machines use fine particles as an integral part of their process. Once this powder escapes the machine, it is so fine that it stays suspended in the air for hours. From that suspended state, it affects the health of office workers in the general area.
While it is a fact that the majority of xerographic machines do not release significant amounts of particles, testing over several years has demonstrated that the release of particles does happen with almost all types of xerographic equipment. It is not limited to one make or model. There is no current way to predict which xerographic machine will release particles and which will not.
Current xerographic machines do contain filters. However, these filters are for ozone control, and are ineffective against particulates.
The objective of this invention is to provide a device to capture escaping particles before they can affect nearby staff.
While office and home air cleaners are common, we are not aware of any other inventions that aim to filter out escaping dust before it can escape the xerographic machine.
This invention aims to filter one particles originating from xerographic machines before they can enter the general room air.
1 The term "xerographic" is used here to refer to the general process whereby a powdered toner is fixed to a piece of paper through the applications of electrical charges and heat. It is not meant to refer to the specific brand name of photocopiers.
Examples of machines that may use xerographic processes are photocopiers, laser printers and fax machines.
These small particles come from a large range of sources, and occur both inside and outside buildings. In large, modern office buildings, exterior pollutants are largely removed by efficient air filtration mechanisms. Thus, the particles in this venue come from interior sources. Experience has shown that one of the major interior sources is office machines - specifically copiers and printers using the xerographic process.1 These machines use fine particles as an integral part of their process. Once this powder escapes the machine, it is so fine that it stays suspended in the air for hours. From that suspended state, it affects the health of office workers in the general area.
While it is a fact that the majority of xerographic machines do not release significant amounts of particles, testing over several years has demonstrated that the release of particles does happen with almost all types of xerographic equipment. It is not limited to one make or model. There is no current way to predict which xerographic machine will release particles and which will not.
Current xerographic machines do contain filters. However, these filters are for ozone control, and are ineffective against particulates.
The objective of this invention is to provide a device to capture escaping particles before they can affect nearby staff.
While office and home air cleaners are common, we are not aware of any other inventions that aim to filter out escaping dust before it can escape the xerographic machine.
This invention aims to filter one particles originating from xerographic machines before they can enter the general room air.
1 The term "xerographic" is used here to refer to the general process whereby a powdered toner is fixed to a piece of paper through the applications of electrical charges and heat. It is not meant to refer to the specific brand name of photocopiers.
Examples of machines that may use xerographic processes are photocopiers, laser printers and fax machines.
Description
Specification This invention relates to a particle air filter for xerographic office machines While it is a fact that the majority of xerographic machines do not release significant amounts of particles, testing over several years has demonstrated that the release of particles does happen with almost all types of xerographic equipment. It is not limited to one make or model. There is no current way to predict which xerographic machine will release particles and which will not.
Current,xerographic machines do contain filters. However, these filters are usually for ozone control, and are ineffective against small particulates.
The objective of this invention is to provide a device to capture particles escaping from xerographic machines before they can affect nearby staff.
The invention is an Air Filter for Xerographic Process Office Machines. It is pictured in the attached sketch.
The filter is designed to be an attachment to any xerographic machine. It is meant to attach to the side, near one of the heat dissipation ports.
The filter unit consists of:
1) a housing unit, attached to the machine through the use of foam adhesive tape (the tape provides an air tight seal around the edges) 2) a fan and associated wiring, designed to draw dust-laden air from the inside of the xerographic machine and push the air through a filter.
Current,xerographic machines do contain filters. However, these filters are usually for ozone control, and are ineffective against small particulates.
The objective of this invention is to provide a device to capture particles escaping from xerographic machines before they can affect nearby staff.
The invention is an Air Filter for Xerographic Process Office Machines. It is pictured in the attached sketch.
The filter is designed to be an attachment to any xerographic machine. It is meant to attach to the side, near one of the heat dissipation ports.
The filter unit consists of:
1) a housing unit, attached to the machine through the use of foam adhesive tape (the tape provides an air tight seal around the edges) 2) a fan and associated wiring, designed to draw dust-laden air from the inside of the xerographic machine and push the air through a filter.
3) a HEPAZ filter, to remove virtually all particles emitted by the machine before they can enter the room air.
The filter unit is independently powered, using a 110 volt outlet. It runs constantly, and is thus ready to operate whenever the xerographic machine is required for use.
Tests on the filter unit have demonstrated an ability to reduce particle emissions by 98 to virtually 100 per cent.
Although the fan and filter assemblies are standard, the housing comes in different configurations to match with the different xerographic machine designs.
The filter unit is independently powered, using a 110 volt outlet. It runs constantly, and is thus ready to operate whenever the xerographic machine is required for use.
Tests on the filter unit have demonstrated an ability to reduce particle emissions by 98 to virtually 100 per cent.
Although the fan and filter assemblies are standard, the housing comes in different configurations to match with the different xerographic machine designs.
Claims (2)
1) The use of a generic housing, matched with a fan and filter unit to eliminate harmful particle emissions from any make of xerographic machine.
2) The use of a HEPA filter to reduce particle emissions to lowest possible levels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2272247 CA2272247A1 (en) | 1999-05-25 | 1999-05-25 | Air filter for xerographic process office machines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2272247 CA2272247A1 (en) | 1999-05-25 | 1999-05-25 | Air filter for xerographic process office machines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2272247A1 true CA2272247A1 (en) | 2000-11-25 |
Family
ID=29589025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2272247 Abandoned CA2272247A1 (en) | 1999-05-25 | 1999-05-25 | Air filter for xerographic process office machines |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2272247A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008151721A1 (en) * | 2007-06-15 | 2008-12-18 | Carl Freudenberg Kg | Toner dust filter |
| CN102692847A (en) * | 2012-06-19 | 2012-09-26 | 王卫华 | Operation box for filling ink powder into selenium drum |
| CN116050676A (en) * | 2023-03-31 | 2023-05-02 | 四川互慧软件有限公司 | Emergency plan recommendation system based on emergency group events |
-
1999
- 1999-05-25 CA CA 2272247 patent/CA2272247A1/en not_active Abandoned
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008151721A1 (en) * | 2007-06-15 | 2008-12-18 | Carl Freudenberg Kg | Toner dust filter |
| CN102692847A (en) * | 2012-06-19 | 2012-09-26 | 王卫华 | Operation box for filling ink powder into selenium drum |
| CN116050676A (en) * | 2023-03-31 | 2023-05-02 | 四川互慧软件有限公司 | Emergency plan recommendation system based on emergency group events |
| CN116050676B (en) * | 2023-03-31 | 2023-06-16 | 四川互慧软件有限公司 | Emergency plan recommendation system based on emergency group events |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |