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JPS57159678A - Printing density detector for printer - Google Patents

Printing density detector for printer

Info

Publication number
JPS57159678A
JPS57159678A JP56044787A JP4478781A JPS57159678A JP S57159678 A JPS57159678 A JP S57159678A JP 56044787 A JP56044787 A JP 56044787A JP 4478781 A JP4478781 A JP 4478781A JP S57159678 A JPS57159678 A JP S57159678A
Authority
JP
Japan
Prior art keywords
printing density
detector
printing
paper
sprocket hole
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
JP56044787A
Other languages
Japanese (ja)
Inventor
Hiroshi Yamada
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.)
Fujitsu Ltd
Toray Industries Inc
Original Assignee
Fujitsu Ltd
Toray Industries 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 Fujitsu Ltd, Toray Industries Inc filed Critical Fujitsu Ltd
Priority to JP56044787A priority Critical patent/JPS57159678A/en
Publication of JPS57159678A publication Critical patent/JPS57159678A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/50—Machine control of apparatus for electrographic processes using a charge pattern, e.g. regulating differents parts of the machine, multimode copiers, microprocessor control
    • G03G15/5062—Machine control of apparatus for electrographic processes using a charge pattern, e.g. regulating differents parts of the machine, multimode copiers, microprocessor control by measuring the characteristics of an image on the copy material
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2215/00—Apparatus for electrophotographic processes
    • G03G2215/00025—Machine control, e.g. regulating different parts of the machine
    • G03G2215/00029—Image density detection
    • G03G2215/00067—Image density detection on recording medium
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2215/00—Apparatus for electrophotographic processes
    • G03G2215/00362—Apparatus for electrophotographic processes relating to the copy medium handling
    • G03G2215/00443—Copy medium
    • G03G2215/00451—Paper
    • G03G2215/00455—Continuous web, i.e. roll
    • G03G2215/00459—Fan fold, e.g. CFF, normally perforated
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2215/00—Apparatus for electrophotographic processes
    • G03G2215/00362—Apparatus for electrophotographic processes relating to the copy medium handling
    • G03G2215/00535—Stable handling of copy medium
    • G03G2215/00717—Detection of physical properties
    • G03G2215/00755—Detection of physical properties of sheet toner density

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Accessory Devices And Overall Control Thereof (AREA)
  • Dry Development In Electrophotography (AREA)
  • Control Or Security For Electrophotography (AREA)

Abstract

PURPOSE:To provide a detector which enables the checking of the length of a paper for printing data and the detection of information necessary for controlling possible staggering thereof by detecting a toner mark and a sprocket hole for detecting printing density simultaneously with a printing density detector. CONSTITUTION:A toner mark 8, a sprocket hole 9 and a printing density detector 5 are arranged on the same center line. The printing density of the toner mark 8 is detected as a function of a peak value from the output waveform of the detector 5 to check the length of a printing paper 4. This also enables the checking for the running condition of the paper 4 by determining whether the signal of the sprocket hole 9 is generated at each cycle as specified.
JP56044787A 1981-03-27 1981-03-27 Printing density detector for printer Pending JPS57159678A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56044787A JPS57159678A (en) 1981-03-27 1981-03-27 Printing density detector for printer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56044787A JPS57159678A (en) 1981-03-27 1981-03-27 Printing density detector for printer

Publications (1)

Publication Number Publication Date
JPS57159678A true JPS57159678A (en) 1982-10-01

Family

ID=12701115

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56044787A Pending JPS57159678A (en) 1981-03-27 1981-03-27 Printing density detector for printer

Country Status (1)

Country Link
JP (1) JPS57159678A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02503299A (en) * 1988-02-22 1990-10-11 イーストマン・コダック・カンパニー non-impact printer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02503299A (en) * 1988-02-22 1990-10-11 イーストマン・コダック・カンパニー non-impact printer

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