GB1422175A - Xerographic erase mechanism - Google Patents
Xerographic erase mechanismInfo
- Publication number
- GB1422175A GB1422175A GB2125973A GB2125973A GB1422175A GB 1422175 A GB1422175 A GB 1422175A GB 2125973 A GB2125973 A GB 2125973A GB 2125973 A GB2125973 A GB 2125973A GB 1422175 A GB1422175 A GB 1422175A
- Authority
- GB
- United Kingdom
- Prior art keywords
- width
- xerographic
- copy sheet
- shade
- erase mechanism
- 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
Links
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/04—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material
- G03G15/045—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material with means for charging or discharging distinct portions of the charge pattern on the recording material, e.g. for contrast enhancement or discharging non-image areas
- G03G15/047—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material with means for charging or discharging distinct portions of the charge pattern on the recording material, e.g. for contrast enhancement or discharging non-image areas for discharging non-image areas
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G2215/00—Apparatus for electrophotographic processes
- G03G2215/04—Arrangements for exposing and producing an image
- G03G2215/0429—Changing or enhancing the image
- G03G2215/0431—Producing a clean non-image area, i.e. avoiding show-around effects
- G03G2215/0434—Parameters defining the non-image area to be cleaned
- G03G2215/0443—Copy medium outline relative to the charge image
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G2215/00—Apparatus for electrophotographic processes
- G03G2215/04—Arrangements for exposing and producing an image
- G03G2215/0429—Changing or enhancing the image
- G03G2215/0431—Producing a clean non-image area, i.e. avoiding show-around effects
- G03G2215/0448—Charge-erasing means for the non-image area
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Control Or Security For Electrophotography (AREA)
- Exposure Or Original Feeding In Electrophotography (AREA)
- Discharging, Photosensitive Material Shape In Electrophotography (AREA)
Abstract
1422175 Erasing electrostatic images XEROX CORP 4 May 1973 [12 May 1972] 21259/73 Heading G2H Deposition of toner on areas of photoconductive drum 10 which are not to contact a copy sheet is prevented by flooding of them with light from a suitably masked source before development. The source may be an electroluminescent panel 26, with a sliding shade 28 which can be adjusted to vary the width of margin X. The shade may be linked to a copy sheet sensing device, and be moved according to the width of sheets to be printed on.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US25269872A | 1972-05-12 | 1972-05-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1422175A true GB1422175A (en) | 1976-01-21 |
Family
ID=22957135
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2125973A Expired GB1422175A (en) | 1972-05-12 | 1973-05-04 | Xerographic erase mechanism |
Country Status (3)
Country | Link |
---|---|
US (1) | US3792913A (en) |
JP (1) | JPS5644434B2 (en) |
GB (1) | GB1422175A (en) |
Families Citing this family (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4133609A (en) * | 1974-05-15 | 1979-01-09 | Minolta Camera Kabushiki Kaisha | Charge-erasing device for electrophotographic copying apparatus |
US4046467A (en) * | 1975-05-14 | 1977-09-06 | Xerox Corporation | Zoom lens copier |
US3967896A (en) * | 1975-05-14 | 1976-07-06 | Rank Xerox Ltd. | Variable edge fadeout apparatus for electrostatic reproduction machines |
JPS5527885Y2 (en) * | 1975-09-09 | 1980-07-03 | ||
IT1055822B (en) * | 1976-01-20 | 1982-01-11 | Olivetti E C Spa | ELECTROPHOTOGRAPHIC COPIER MACHINE |
US4047811A (en) * | 1976-05-27 | 1977-09-13 | Xerox Corporation | Available light marginal illumination system |
JPS5494038A (en) * | 1978-01-07 | 1979-07-25 | Ricoh Co Ltd | Copier for zerography |
JPS6320996Y2 (en) * | 1978-04-07 | 1988-06-10 | ||
US4264201A (en) * | 1978-11-13 | 1981-04-28 | Pitney Bowes Inc. | Electrostatic copying process |
US4255042A (en) * | 1979-03-26 | 1981-03-10 | International Business Machines Corporation | Light pipe for accurate erasure of photoconductor charge |
JPS5989371U (en) * | 1982-12-03 | 1984-06-16 | シャープ株式会社 | Light irradiation device for copying machines |
US4695152A (en) * | 1984-11-28 | 1987-09-22 | Xerox Corporation | Charge erase device for an electrophotographic printing machine |
US4611906A (en) * | 1985-01-22 | 1986-09-16 | Sanyo Electric Co., Ltd. | Electrophotographic copying apparatus |
JPS61175631A (en) * | 1985-01-30 | 1986-08-07 | Minolta Camera Co Ltd | Reader printer |
US4774593A (en) * | 1985-04-19 | 1988-09-27 | Sanyo Electric Co., Ltd. | Image forming apparatus |
US4707110A (en) * | 1985-12-27 | 1987-11-17 | Kabushiki Kaisha Toshiba | Image forming apparatus with color change area discriminating function |
US4716436A (en) * | 1986-02-26 | 1987-12-29 | Xerox Corporation | Charge erase device with flare light control |
US4745438A (en) * | 1986-09-16 | 1988-05-17 | Xerox Corporation | Automatic copier show-around erase system |
US5268716A (en) * | 1986-10-07 | 1993-12-07 | Minolta Camera Kabushiki Kaisha | Data entry method and apparatus for an electrophotographic copying machine |
US5172167A (en) * | 1986-10-07 | 1992-12-15 | Minolta Camera Kabushiki Kaishi | Data entry apparatus |
US5353108A (en) * | 1990-07-05 | 1994-10-04 | Matsushita Electric Industrial Co., Ltd. | Apparatus for cleaning printed paper |
US6022423A (en) * | 1996-05-23 | 2000-02-08 | Imagex Technologies, Inc. | Method for deinking paper |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3089384A (en) * | 1959-10-31 | 1963-05-14 | Agfa Ag | Photographic masking arrangement |
US3556655A (en) * | 1968-01-22 | 1971-01-19 | Addressograph Multigraph | Photoelectrostatic copying machine |
US3540806A (en) * | 1968-03-06 | 1970-11-17 | Xerox Corp | Half-toning method and apparatus for solid area coverage |
US3671121A (en) * | 1970-08-05 | 1972-06-20 | Eastman Kodak Co | Exposure device for controlling charge on a portion of a charged surface bordering an image frame projected on the charged surface |
-
1972
- 1972-05-12 US US00252698A patent/US3792913A/en not_active Expired - Lifetime
-
1973
- 1973-05-04 GB GB2125973A patent/GB1422175A/en not_active Expired
- 1973-05-10 JP JP5305273A patent/JPS5644434B2/ja not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS5644434B2 (en) | 1981-10-19 |
JPS4950945A (en) | 1974-05-17 |
US3792913A (en) | 1974-02-19 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
746 | Register noted 'licences of right' (sect. 46/1977) | ||
PCNP | Patent ceased through non-payment of renewal fee |