JPS60109162A - Fluorescent tube for optical writing - Google Patents

Fluorescent tube for optical writing

Info

Publication number
JPS60109162A
JPS60109162A JP21750783A JP21750783A JPS60109162A JP S60109162 A JPS60109162 A JP S60109162A JP 21750783 A JP21750783 A JP 21750783A JP 21750783 A JP21750783 A JP 21750783A JP S60109162 A JPS60109162 A JP S60109162A
Authority
JP
Japan
Prior art keywords
light
area
shielding film
glass
entire
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
JP21750783A
Other languages
Japanese (ja)
Inventor
Hideo Segawa
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 JP21750783A priority Critical patent/JPS60109162A/en
Priority claimed from US06/663,440 external-priority patent/US4763041A/en
Publication of JPS60109162A publication Critical patent/JPS60109162A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, e.g. INK-JET PRINTERS, THERMAL PRINTERS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/435—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of radiation to a printing material or impression-transfer material
    • B41J2/447—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of radiation to a printing material or impression-transfer material using arrays of radiation sources
    • B41J2/4476—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of radiation to a printing material or impression-transfer material using arrays of radiation sources using cathode ray or electron beam tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, e.g. INK-JET PRINTERS, THERMAL PRINTERS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/435—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of radiation to a printing material or impression-transfer material
    • B41J2/447—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of radiation to a printing material or impression-transfer material using arrays of radiation sources
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING; COUNTING
    • G06K—RECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K15/00—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers
    • G06K15/02—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers using printers
    • G06K15/12—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers using printers by photographic printing, e.g. by laser printers
    • G06K15/1238—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers using printers by photographic printing, e.g. by laser printers simultaneously exposing more than one point
    • G06K15/1242—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers using printers by photographic printing, e.g. by laser printers simultaneously exposing more than one point on one main scanning line
    • G06K15/1247—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers using printers by photographic printing, e.g. by laser printers simultaneously exposing more than one point on one main scanning line using an array of light sources, e.g. a linear array
    • H—ELECTRICITY
    • H01—BASIC ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J31/00—Cathode ray tubes; Electron beam tubes
    • H01J31/08—Cathode ray tubes; Electron beam tubes having a screen on or from which an image or pattern is formed, picked up, converted, or stored
    • H01J31/10—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes
    • H01J31/12—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes with luminescent screen
    • H01J31/15—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes with luminescent screen with ray or beam selectively directed to luminescent anode segments

Abstract

PURPOSE:To prevent any flare light so as to improve the quality of printing by forming a light-shielding film on the entire inner surface of the top wall of a vacuum case except an area which is located right over a phosphor. CONSTITUTION:After a conductive light-shielding film 20 consisting of a thin metallic film is formed on the inner surface of a face glass 2, an area of the light-shielding film 20 which is located right over a phosphor 6 is removed in a slit-like form by etching or similar method so that light can be taken out through the area. When the fluorescent tube is a dot array tube, it is not necessary that the entire surface of the face glass 2 is transparent and the area through which light is taken out may have a small slit-like shape. Owing to the above constitution in which the entire inner surface of the face glass 2 except the area for taking out light is coated with the light-shielding film 20, any flare light is prevented.
JP21750783A 1983-11-17 1983-11-17 Fluorescent tube for optical writing Pending JPS60109162A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21750783A JPS60109162A (en) 1983-11-17 1983-11-17 Fluorescent tube for optical writing

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP21750783A JPS60109162A (en) 1983-11-17 1983-11-17 Fluorescent tube for optical writing
US06/663,440 US4763041A (en) 1983-10-24 1984-10-22 Dot array fluorescent tube for writing optical information in optical printer

Publications (1)

Publication Number Publication Date
JPS60109162A true JPS60109162A (en) 1985-06-14

Family

ID=16705315

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21750783A Pending JPS60109162A (en) 1983-11-17 1983-11-17 Fluorescent tube for optical writing

Country Status (1)

Country Link
JP (1) JPS60109162A (en)

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