UST940022I4 - Pressurized and filtered xerographic system - Google Patents
Pressurized and filtered xerographic system Download PDFInfo
- Publication number
- UST940022I4 UST940022I4 US48334674A UST940022I4 US T940022 I4 UST940022 I4 US T940022I4 US 48334674 A US48334674 A US 48334674A US T940022 I4 UST940022 I4 US T940022I4
- Authority
- US
- United States
- Prior art keywords
- air
- enclosure
- internal
- photoreceptor
- pressurized
- 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
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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
- G03G21/20—Humidity or temperature control also ozone evacuation; Internal apparatus environment control
- G03G21/206—Conducting air through the machine, e.g. for cooling, filtering, removing gases like ozone
Definitions
- An electrostatographic copying system is contained within an air enclosure which is slightly positively air pressurized relative to its ambient surroundings to reduce both internal and external contamination of system components and provide a controlled internal air flow pattern.
- a blower blows air into the machine enclosure through a filter which filters contaminants which would otherwise contribute to photoreceptor image deletions.
- a separate optics system enclosure can.
Abstract
AN ELECTROSTATOGRAPHIC COPYING SYSTEM IS CONTAINED WITHIN THE AIR ENCLOSURE WHICH IS SLIGHTLY POSITIVELY AIR PRESSURIZED RELATIVE TO ITS AMBIENT SURROUNDINGS TO REDUCE BOTH INTERNAL AND EXTERNAL CONTAMINATION OF SYSTEM COMPONENTS AND PROVIDE A CONTROLLED INTERNAL AIR FLOW PATTERN. A BLOWER BLOWS AIR INTO THE MACHINE ENCLOSURE THROUGH A FILTER WHICH FILTERS CONTAMINANTS WHICH WOULD OTHERWISE CONTRIBUTE TO PHOTORECEPTOR IMAGE DELETIONS. A SEPARATE OPTICS SYSTEM ENCLOSURE CAN BE INDIRECTLY PRESSURIZED INSIDE THE MAIN ENCLOSURE. AN AIR SHIELD IS POSITIONED TO PREVENT THE INTERNAL AIR FLOW FROM CAUSING CONTAMINATIONS SUCH AS FUMES FROM THE FUSER FROM STRIKING THE PHOTORECEPTOR. THE AIR IS PREFERABLY EXHAUSTED THROUGH THE COPY SHEET EXIT AT THE OPPOSITE SIDE OF THE ENCLOSURE, AND THROUGH THE VACUUM SHEET PICK-OFF SYSTEM. INTERNAL PRESSURE OF LESS THAN 0.1 INCH OF WATER SUSTAINED BY ABOUT 20 CFM IS APPROPRIATE. AMINE CONTAMINATS CAUSING SELENIUM ALLOY PHOTORECEPTOR IMAGE DELATIONS ARE REMOVED BY FILTER MATERIALS SUCH AS ACTIVATED CHARCOAL OR HOPCALITE.
Description
UNITED STATES PATENT AND TRADEMARK OFFICE Published at the request of the applicant or owner in accorfience with the Notice of Dec. 16, 1969, 869 0.4 68?. The abstracts of Defensive Publication applications are identified by rliscinctly numbered series and are arranged chronologically. The heading of each abstract indicates the number of pages 02 specification, including claims and sheets of drawings contained in the application as originally filed. The files of these applications-ere available to the public for inspection and. reproduction may he purchased for 30 cents a sheet.
Defensive Publication applications have not been examinerl as to the merits of alleged. invention. The Patent and Trademark Oflice makes no assertion as to the novelty of the disclosed subject matter.
PUBLISHED NOVEMBER 4, 1975 9&0 (1G. 12
russsrnerzisn AND xsiroousriric overuse Joli-u E. Reclaim; Webster, N 31., essignor to Xerox filoruoretiou, Stamford, Court. Filed 3mm 25, E974, her. No. $33,346 But. Cl. 693g 15/00 US. Cl. 35%3 l heet Drawing. ll Pages Specification An electrostatographic copying system is contained within an air enclosure which is slightly positively air pressurized relative to its ambient surroundings to reduce both internal and external contamination of system components and provide a controlled internal air flow pattern. A blower blows air into the machine enclosure through a filter which filters contaminants which would otherwise contribute to photoreceptor image deletions. A separate optics system enclosure can. be indirectly pressurized inside the main enclosure. An air shield is positioned to prevent the internal air fiow from causing contaminents such as fumes from the fuscr from striking the photoreceptor. The air is preferably exhausted through the copy sheet exit at the oeposite side of the enclosure, and through the vacuum sheet pick-off system. Internal pressure of less than 0.1 inch of water sustained by about 20 cfrn is appropriate. Amine contaminants causing selenium alloy photoreceptor image deletions are removed by filter materials such as activated charcoal or Hopcalite.
0V 4, 1975 I. c. RODOA "WQQJQZZ PRESSURIZED AND FELTERJED XEROGRAPHHC SYSTEM Original Filed June 26, 1974
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US48334674 UST940022I4 (en) | 1974-06-26 | 1974-06-26 | Pressurized and filtered xerographic system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US48334674 UST940022I4 (en) | 1974-06-26 | 1974-06-26 | Pressurized and filtered xerographic system |
Publications (1)
Publication Number | Publication Date |
---|---|
UST940022I4 true UST940022I4 (en) | 1975-11-04 |
Family
ID=23919686
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US48334674 Pending UST940022I4 (en) | 1974-06-26 | 1974-06-26 | Pressurized and filtered xerographic system |
Country Status (1)
Country | Link |
---|---|
US (1) | UST940022I4 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4680040A (en) * | 1986-01-17 | 1987-07-14 | Xerox Corporation | Multipurpose filtering material |
US20120070182A1 (en) * | 2010-09-17 | 2012-03-22 | Samsung Electronics Co., Ltd. | Smell dilution unit and electrophotographic image forming apparatus including the same |
-
1974
- 1974-06-26 US US48334674 patent/UST940022I4/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4680040A (en) * | 1986-01-17 | 1987-07-14 | Xerox Corporation | Multipurpose filtering material |
US20120070182A1 (en) * | 2010-09-17 | 2012-03-22 | Samsung Electronics Co., Ltd. | Smell dilution unit and electrophotographic image forming apparatus including the same |
US8611779B2 (en) * | 2010-09-17 | 2013-12-17 | Samsung Electronics Co., Ltd. | Smell dilution unit and electrophotographic image forming apparatus including the same |
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