JPS5654462A - Copying machine - Google Patents

Copying machine

Info

Publication number
JPS5654462A
JPS5654462A JP13113079A JP13113079A JPS5654462A JP S5654462 A JPS5654462 A JP S5654462A JP 13113079 A JP13113079 A JP 13113079A JP 13113079 A JP13113079 A JP 13113079A JP S5654462 A JPS5654462 A JP S5654462A
Authority
JP
Japan
Prior art keywords
copying
original platen
optical axis
moving speed
magnification
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
Application number
JP13113079A
Other languages
Japanese (ja)
Inventor
Keizo Nishiyama
Noritaka Mochizuki
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP13113079A priority Critical patent/JPS5654462A/en
Publication of JPS5654462A publication Critical patent/JPS5654462A/en
Pending legal-status Critical Current

Links

Landscapes

  • Exposure Or Original Feeding In Electrophotography (AREA)
  • Variable Magnification In Projection-Type Copying Machines (AREA)

Abstract

PURPOSE:To make possible copying of further scale-down magnification without changing the optical system of a predetermined magnification copying system at all by providing an original plane obliquely with respect to the plane rectangular to the optical axis in consideration for the focal depth within the slit width. CONSTITUTION:An original platen 1 is so obliquely provided as to assume an angle of theta with respect to the plane rectangular to the optical axis as compared to the position of the original platen 1' at the unmagnification copying and is so arranged as to move at an equal speed in the obliquely provided direction. The relation between the slit width W of a stationary slit 2 and theta is made 1/2Wtantheta <=DELTAh (DELTAh is the focal depth of a lens 3). If the peripheral speed of a photoreceptor 4 is defined as v0, the component of the moving speed of the original platen 1 in the direction orthogonal to the optical axis is v0, from the unmagnification copying system, and the moving speed of the original platen in its moving speed becomes v0/costheta. Thereby, the copying of further scale-down magnification may be performed without changing predetermined magnification copying optical system at all.
JP13113079A 1979-10-11 1979-10-11 Copying machine Pending JPS5654462A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13113079A JPS5654462A (en) 1979-10-11 1979-10-11 Copying machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13113079A JPS5654462A (en) 1979-10-11 1979-10-11 Copying machine

Publications (1)

Publication Number Publication Date
JPS5654462A true JPS5654462A (en) 1981-05-14

Family

ID=15050677

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13113079A Pending JPS5654462A (en) 1979-10-11 1979-10-11 Copying machine

Country Status (1)

Country Link
JP (1) JPS5654462A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01290765A (en) * 1988-05-16 1989-11-22 Toshiba Corp Sputtering target
JPH02201468A (en) * 1988-12-16 1990-08-09 Xerox Corp Image former having criscross anamophic expansion/reduction capacity

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01290765A (en) * 1988-05-16 1989-11-22 Toshiba Corp Sputtering target
JPH02201468A (en) * 1988-12-16 1990-08-09 Xerox Corp Image former having criscross anamophic expansion/reduction capacity

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