JPS556363A - Electrophotographic copying method - Google Patents

Electrophotographic copying method

Info

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
Application number
JP7894078A
Other languages
Japanese (ja)
Other versions
JPS6226464B2 (en
Inventor
Shigekazu Enoki
Kazuo Kobayashi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ricoh Co Ltd
Original Assignee
Ricoh Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP7894078A priority Critical patent/JPS556363A/en
Publication of JPS556363A publication Critical patent/JPS556363A/en
Publication of JPS6226464B2 publication Critical patent/JPS6226464B2/ja
Granted legal-status Critical Current

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
JP7894078A 1978-06-29 1978-06-29 Electrophotographic copying method Granted JPS556363A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
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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