JPS5483276A - Sheet feeder - Google Patents

Sheet feeder

Info

Publication number
JPS5483276A
JPS5483276A JP14934377A JP14934377A JPS5483276A JP S5483276 A JPS5483276 A JP S5483276A JP 14934377 A JP14934377 A JP 14934377A JP 14934377 A JP14934377 A JP 14934377A JP S5483276 A JPS5483276 A JP S5483276A
Authority
JP
Japan
Prior art keywords
tray
sheet
sheets
finish
detector
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
JP14934377A
Other languages
Japanese (ja)
Inventor
Tamaki Kaneko
Kenichi Mizuma
Tsugio Okuzawa
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 JP14934377A priority Critical patent/JPS5483276A/en
Priority to US05/959,597 priority patent/US4273323A/en
Priority to DE2850820A priority patent/DE2850820C2/en
Publication of JPS5483276A publication Critical patent/JPS5483276A/en
Pending legal-status Critical Current

Links

Landscapes

  • Controlling Sheets Or Webs (AREA)

Abstract

PURPOSE: To enable simply judging whether sheet jam or finish exactly by providing first detecting means for detecting existence of sheets on a sheet tray and second detecting means for detecting residual sheets on the tray.
CONSTITUTION: Sheets 2 are stacked on an elevationally movable sheet tray 1. The sheet finish on the tray 1 is detected by the alteration of reflecting light therefrom by a photoelectric sheet existence detector 7 provided to face with the upper surface of the tray 1 while feeding the sheets from the uppermost sheet. A detector piece 15 is further provided at part of an endless elevation belt 9 driven by the movement of the tray 1 for turning a detection switch 16 ON when the sheets on the tray 1 become predetermined number. When a signal from the detector 7 is dispatched before a signal from the switch 16 is dispatched, it is judged as sheet jam, and in inverted case to the above is judged as correct sheet finish.
COPYRIGHT: (C)1979,JPO&Japio
JP14934377A 1977-11-24 1977-12-14 Sheet feeder Pending JPS5483276A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP14934377A JPS5483276A (en) 1977-12-14 1977-12-14 Sheet feeder
US05/959,597 US4273323A (en) 1977-11-24 1978-11-13 Sheet feeding apparatus for copying machine, printing machine, etc.
DE2850820A DE2850820C2 (en) 1977-11-24 1978-11-23 Device for feeding the top sheet of a stack of sheets to a processing station

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14934377A JPS5483276A (en) 1977-12-14 1977-12-14 Sheet feeder

Publications (1)

Publication Number Publication Date
JPS5483276A true JPS5483276A (en) 1979-07-03

Family

ID=15473030

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14934377A Pending JPS5483276A (en) 1977-11-24 1977-12-14 Sheet feeder

Country Status (1)

Country Link
JP (1) JPS5483276A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5713041A (en) * 1980-06-24 1982-01-23 Toshiba Corp Paper quantity indicator
JPS6456426U (en) * 1987-09-30 1989-04-07

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5713041A (en) * 1980-06-24 1982-01-23 Toshiba Corp Paper quantity indicator
JPS6456426U (en) * 1987-09-30 1989-04-07
JPH0547157Y2 (en) * 1987-09-30 1993-12-10

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