ATE62889T1 - DEVICE FOR DETECTING DEFECTIVE SHEETS IN PRINTING MACHINES. - Google Patents

DEVICE FOR DETECTING DEFECTIVE SHEETS IN PRINTING MACHINES.

Info

Publication number
ATE62889T1
ATE62889T1 AT87117256T AT87117256T ATE62889T1 AT E62889 T1 ATE62889 T1 AT E62889T1 AT 87117256 T AT87117256 T AT 87117256T AT 87117256 T AT87117256 T AT 87117256T AT E62889 T1 ATE62889 T1 AT E62889T1
Authority
AT
Austria
Prior art keywords
paper
sheet
recesses
guide plate
insertion guide
Prior art date
Application number
AT87117256T
Other languages
German (de)
Inventor
Akehiro Kusaka
Original Assignee
Komori Printing Mach
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 Komori Printing Mach filed Critical Komori Printing Mach
Application granted granted Critical
Publication of ATE62889T1 publication Critical patent/ATE62889T1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H7/00—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles
    • B65H7/02—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors
    • B65H7/06—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors responsive to presence of faulty articles or incorrect separation or feed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H7/00—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles
    • B65H7/02—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors
    • B65H7/14—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors by photoelectric feelers or detectors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/50—Occurence
    • B65H2511/51—Presence
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/50—Occurence
    • B65H2511/52—Defective operating conditions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/50—Occurence
    • B65H2511/52—Defective operating conditions
    • B65H2511/522—Folds or misfolding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2513/00—Dynamic entities; Timing aspects
    • B65H2513/50—Timing
    • B65H2513/512—Starting; Stopping
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2515/00—Physical entities not provided for in groups B65H2511/00 or B65H2513/00
    • B65H2515/60—Optical characteristics, e.g. colour, light
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2553/00—Sensing or detecting means
    • B65H2553/40—Sensing or detecting means using optical, e.g. photographic, elements
    • B65H2553/41—Photoelectric detectors
    • B65H2553/414—Photoelectric detectors involving receptor receiving light reflected by a reflecting surface and emitted by a separate emitter

Landscapes

  • Controlling Sheets Or Webs (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)

Abstract

An abnormal-paper sensing apparatus in a printing machine which senses the presence of a front folded corner of a sheet of printing paper. The sheet of paper (7) hits against front lays (5) provided at a front end of an insertion guide plate (1) and stops. The insertion guide plate has a pair of recesses (8) provided in a front end portion thereof so as to extend thereacross at positions where the recesses can face the front corners of the sheet of paper which passes over the recesses. The recesses have a triangular cross section with a longer side (8a) positioned on the side of the front end of the insertion guide plate and with a shorter side (8b) positioned on the side of the rear end of the insertion guide plate. When the sheet of paper hits against front lays and stops, and if the sheet of paper has a folded angle at its front end, the corresponding recess is exposed and reflects the projected light diffusively, so that the sensors do not receive a quantity of reflected light enough to continue paper feeding.
AT87117256T 1987-11-24 1987-11-24 DEVICE FOR DETECTING DEFECTIVE SHEETS IN PRINTING MACHINES. ATE62889T1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP87117256A EP0317655B1 (en) 1987-11-24 1987-11-24 Abnormal-paper sensing apparatus in a printing machine

Publications (1)

Publication Number Publication Date
ATE62889T1 true ATE62889T1 (en) 1991-05-15

Family

ID=8197469

Family Applications (1)

Application Number Title Priority Date Filing Date
AT87117256T ATE62889T1 (en) 1987-11-24 1987-11-24 DEVICE FOR DETECTING DEFECTIVE SHEETS IN PRINTING MACHINES.

Country Status (3)

Country Link
EP (1) EP0317655B1 (en)
AT (1) ATE62889T1 (en)
DE (1) DE3769656D1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1428779A1 (en) * 2002-12-13 2004-06-16 Kba-Giori S.A. Process and apparatus to control the integrity of a planar substrate
EP2489514B1 (en) 2011-02-16 2016-02-03 Komori Corporation Method and apparatus for detecting folded corner of sheet in sheet-fed printing press
EP2808279A4 (en) * 2012-01-25 2015-10-07 Fujitsu Frontech Ltd Medium detection device and medium conveyance device

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3647205A (en) * 1970-05-15 1972-03-07 Polygraph Leipzig Method and apparatus for feeding of sheets fittingly aligned to a machine
SE360839B (en) * 1971-10-05 1973-10-08 Printing Equipment Ab
JPS5851827B2 (en) * 1980-12-05 1983-11-18 小森印刷機械株式会社 Printing paper side edge detection device
DE3336721C2 (en) * 1983-10-08 1986-12-11 Erhardt & Leimer GmbH, 8900 Augsburg Photoelectric sensing device

Also Published As

Publication number Publication date
EP0317655A1 (en) 1989-05-31
EP0317655B1 (en) 1991-04-24
DE3769656D1 (en) 1991-05-29

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Legal Events

Date Code Title Description
UEP Publication of translation of european patent specification
EELA Cancelled due to lapse of time