GB2259998B - Test patch generation in laser printers - Google Patents

Test patch generation in laser printers

Info

Publication number
GB2259998B
GB2259998B GB9119485A GB9119485A GB2259998B GB 2259998 B GB2259998 B GB 2259998B GB 9119485 A GB9119485 A GB 9119485A GB 9119485 A GB9119485 A GB 9119485A GB 2259998 B GB2259998 B GB 2259998B
Authority
GB
United Kingdom
Prior art keywords
laser printers
test patch
patch generation
generation
test
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.)
Expired - Fee Related
Application number
GB9119485A
Other versions
GB2259998A (en
GB9119485D0 (en
Inventor
Sueur Eric John Le
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.)
Xerox Corp
Original Assignee
Xerox Corp
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 Xerox Corp filed Critical Xerox Corp
Priority to GB9119485A priority Critical patent/GB2259998B/en
Publication of GB9119485D0 publication Critical patent/GB9119485D0/en
Publication of GB2259998A publication Critical patent/GB2259998A/en
Application granted granted Critical
Publication of GB2259998B publication Critical patent/GB2259998B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/23—Reproducing arrangements
    • H04N1/29—Reproducing arrangements involving production of an electrostatic intermediate picture
    • H04N1/295—Circuits or arrangements for the control thereof, e.g. using a programmed control device, according to a measured quantity
    • 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
    • G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
    • G03G15/08—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
    • G03G15/0822—Arrangements for preparing, mixing, supplying or dispensing developer
    • G03G15/0848—Arrangements for testing or measuring developer properties or quality, e.g. charge, size, flowability
    • G03G15/0849—Detection or control means for the developer concentration
    • G03G15/0855—Detection or control means for the developer concentration the concentration being measured by optical means
    • 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
    • G03G15/5033—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 photoconductor characteristics, e.g. temperature, or the characteristics of an image on the photoconductor
    • G03G15/5041—Detecting a toner image, e.g. density, toner coverage, using a test patch

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Control Or Security For Electrophotography (AREA)
GB9119485A 1991-09-11 1991-09-11 Test patch generation in laser printers Expired - Fee Related GB2259998B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9119485A GB2259998B (en) 1991-09-11 1991-09-11 Test patch generation in laser printers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9119485A GB2259998B (en) 1991-09-11 1991-09-11 Test patch generation in laser printers

Publications (3)

Publication Number Publication Date
GB9119485D0 GB9119485D0 (en) 1991-10-23
GB2259998A GB2259998A (en) 1993-03-31
GB2259998B true GB2259998B (en) 1995-03-29

Family

ID=10701288

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9119485A Expired - Fee Related GB2259998B (en) 1991-09-11 1991-09-11 Test patch generation in laser printers

Country Status (1)

Country Link
GB (1) GB2259998B (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4279498A (en) * 1978-12-28 1981-07-21 Ricoh Company, Ltd. Electrostatographic copying apparatus with automatic toner density control
US4533234A (en) * 1981-08-03 1985-08-06 Fuji Xerox Co., Ltd. Automatic density control method for a photocopying machine

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4279498A (en) * 1978-12-28 1981-07-21 Ricoh Company, Ltd. Electrostatographic copying apparatus with automatic toner density control
US4533234A (en) * 1981-08-03 1985-08-06 Fuji Xerox Co., Ltd. Automatic density control method for a photocopying machine

Also Published As

Publication number Publication date
GB2259998A (en) 1993-03-31
GB9119485D0 (en) 1991-10-23

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20070911