JPS556363A - Electrophotographic copying method - Google Patents
Electrophotographic copying methodInfo
- Publication number
- JPS556363A JPS556363A JP7894078A JP7894078A JPS556363A JP S556363 A JPS556363 A JP S556363A JP 7894078 A JP7894078 A JP 7894078A JP 7894078 A JP7894078 A JP 7894078A JP S556363 A JPS556363 A JP S556363A
- Authority
- JP
- Japan
- Prior art keywords
- selfoc
- filter
- cutting
- high frequency
- light
- 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.)
- Granted
Links
Landscapes
- Exposure Or Original Feeding In Electrophotography (AREA)
- Optical Systems Of Projection Type Copiers (AREA)
Abstract
PURPOSE: To prevent the occurrence of toner staining in the visible images being reproduced by interposing a filter in the optical path of image light and cutting off the space frequency of the light transmitted by Selfoc and the high frequency band of its transmittance (MTF characteristics) in the optical path using Selfoc.
CONSTITUTION: A known focusing type optical system (Selfoc) 8 is disposed between the image plane of an original 6, i.e., its bottom face and a rotary drum type photoreceptor 7 and a filter 9 is spread at the Selfoc 8 and in the suitable place before or behind the same. The filter which is composed of a thin plate of solid or liquid form glassy material formed randomly with multiple specks or a thin plate of resin material or the like mixed with coloring agents and whose optical transmission characteristics are of the characteristics of cutting off light of high frequency band, i.e., the characteristics of cutting of high frequency of MTF characteristics, is used for said filter 9.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7894078A JPS556363A (en) | 1978-06-29 | 1978-06-29 | Electrophotographic copying method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7894078A JPS556363A (en) | 1978-06-29 | 1978-06-29 | Electrophotographic copying method |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS556363A true JPS556363A (en) | 1980-01-17 |
JPS6226464B2 JPS6226464B2 (en) | 1987-06-09 |
Family
ID=13675870
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7894078A Granted JPS556363A (en) | 1978-06-29 | 1978-06-29 | Electrophotographic copying method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS556363A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6021489U (en) * | 1983-07-22 | 1985-02-14 | アイテツク商事株式会社 | razor blade cartridge |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6416935U (en) * | 1987-07-16 | 1989-01-27 | ||
JPH0724440Y2 (en) * | 1989-06-20 | 1995-06-05 | 株式会社小松製作所 | Working machine control equipment for construction machinery |
-
1978
- 1978-06-29 JP JP7894078A patent/JPS556363A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6021489U (en) * | 1983-07-22 | 1985-02-14 | アイテツク商事株式会社 | razor blade cartridge |
Also Published As
Publication number | Publication date |
---|---|
JPS6226464B2 (en) | 1987-06-09 |
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