JPS553004A - Information reading device - Google Patents

Information reading device

Info

Publication number
JPS553004A
JPS553004A JP7410678A JP7410678A JPS553004A JP S553004 A JPS553004 A JP S553004A JP 7410678 A JP7410678 A JP 7410678A JP 7410678 A JP7410678 A JP 7410678A JP S553004 A JPS553004 A JP S553004A
Authority
JP
Japan
Prior art keywords
printing component
subject
target
pulse generation
generation circuit
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
JP7410678A
Other languages
Japanese (ja)
Inventor
Yasuhiro Makishima
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP7410678A priority Critical patent/JPS553004A/en
Publication of JPS553004A publication Critical patent/JPS553004A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To eliminate the malfunction caused by the printing component and thus to increase the reliability by erasing the printing component of the target of the pickup tube immediately before reading the object to be read out.
CONSTITUTION: When subject 2 is put on glass window 1, the light of light source 10 is cut out by subject 2 to decrease the light entering photoelectric element 11. Thus the fact that subject 2 is put on window 1 is detected. With this detection output, pulse generation circuit 12 generates the trigger pulses to then generate the terget erasion period pulses through pulse generation circuit 13. At the same time, power circuit 15 supplies the heater voltage and the first grid voltage under the normal driving conditions of pickup tube 4. Based on the normal driving conditions, the sufficiently high target voltage is supplied to erase the printing component of the target. Thus, the reading malfunction caused by the printing component can be minimixed to increase the reliability greatly.
COPYRIGHT: (C)1980,JPO&Japio
JP7410678A 1978-06-21 1978-06-21 Information reading device Pending JPS553004A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7410678A JPS553004A (en) 1978-06-21 1978-06-21 Information reading device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7410678A JPS553004A (en) 1978-06-21 1978-06-21 Information reading device

Publications (1)

Publication Number Publication Date
JPS553004A true JPS553004A (en) 1980-01-10

Family

ID=13537597

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7410678A Pending JPS553004A (en) 1978-06-21 1978-06-21 Information reading device

Country Status (1)

Country Link
JP (1) JPS553004A (en)

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