JPS56141238A - Constant paper feed pressure system paper feeder - Google Patents

Constant paper feed pressure system paper feeder

Info

Publication number
JPS56141238A
JPS56141238A JP4117480A JP4117480A JPS56141238A JP S56141238 A JPS56141238 A JP S56141238A JP 4117480 A JP4117480 A JP 4117480A JP 4117480 A JP4117480 A JP 4117480A JP S56141238 A JPS56141238 A JP S56141238A
Authority
JP
Japan
Prior art keywords
copy paper
paper
bottom plate
forward end
spring
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
JP4117480A
Other languages
Japanese (ja)
Inventor
Yasuaki Ishii
Hisao Yoshihara
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 JP4117480A priority Critical patent/JPS56141238A/en
Publication of JPS56141238A publication Critical patent/JPS56141238A/en
Pending legal-status Critical Current

Links

Landscapes

  • Paper Feeding For Electrophotography (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)

Abstract

PURPOSE: To uniformalize a press contact force of a copy paper, by a method wherein, in a subject device in which a paper feed roller, making press contact with the upper surface of the forward end of the copy paper, and a friction pad are mounted, a spring constant of spring, which pushes up a moving bottom plate whereon a copy a paper heap is placed, is set at a specified value.
CONSTITUTION: A copy paper cassette 1, which tilts and is detachably attached at a reproduction machine body 1, is positioned such that a front half part of a stationary bottom part 2 is lowered, and a moving bottom plate 3 is set thereon so that it can turn centering around a base part 3a serving as a fulcrum. With the moving bottom plate 3 pushed up through the force of a spring 4 which is positioned between the moving bottom plate 3 and the stationary bottom plate 2, a forward end of an uppermost copy paper 6 is brought into press contact with a paper feed roller 7, and the copy paper 6 are separated into each one sheet for feeding through the working of both the roller 7 and a friction pad 8. The spring constant of the spring 4 is set such that it corresponds to a value which equals a copy paper weight W added to a friction resistence force F produced between a forward end fence 5 of the cassette 1 and the forward end of the copy paper 6 and at a time when the copy paper 6 is raised.
COPYRIGHT: (C)1981,JPO&Japio
JP4117480A 1980-04-01 1980-04-01 Constant paper feed pressure system paper feeder Pending JPS56141238A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4117480A JPS56141238A (en) 1980-04-01 1980-04-01 Constant paper feed pressure system paper feeder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4117480A JPS56141238A (en) 1980-04-01 1980-04-01 Constant paper feed pressure system paper feeder

Publications (1)

Publication Number Publication Date
JPS56141238A true JPS56141238A (en) 1981-11-04

Family

ID=12601056

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4117480A Pending JPS56141238A (en) 1980-04-01 1980-04-01 Constant paper feed pressure system paper feeder

Country Status (1)

Country Link
JP (1) JPS56141238A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7481419B2 (en) 2004-01-27 2009-01-27 Samsung Electronics Co., Ltd Two-way paper pickup system

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5423320U (en) * 1977-07-19 1979-02-15
JPS5441737A (en) * 1977-09-09 1979-04-03 Canon Inc Copying material feeder

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5423320U (en) * 1977-07-19 1979-02-15
JPS5441737A (en) * 1977-09-09 1979-04-03 Canon Inc Copying material feeder

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7481419B2 (en) 2004-01-27 2009-01-27 Samsung Electronics Co., Ltd Two-way paper pickup system

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