JPS5566073A - Dot print control unit - Google Patents

Dot print control unit

Info

Publication number
JPS5566073A
JPS5566073A JP13788378A JP13788378A JPS5566073A JP S5566073 A JPS5566073 A JP S5566073A JP 13788378 A JP13788378 A JP 13788378A JP 13788378 A JP13788378 A JP 13788378A JP S5566073 A JPS5566073 A JP S5566073A
Authority
JP
Japan
Prior art keywords
print
dot
control unit
data
head
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
JP13788378A
Other languages
Japanese (ja)
Inventor
Akihiko Takiguchi
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP13788378A priority Critical patent/JPS5566073A/en
Publication of JPS5566073A publication Critical patent/JPS5566073A/en
Pending legal-status Critical Current

Links

Landscapes

  • Dot-Matrix Printers And Others (AREA)

Abstract

PURPOSE: To shorten the effective print time without increment of a memory capacity by using a control unit and a ring buffer to change the moving speed of the print head according to print patterns and controlling the print time.
CONSTITUTION: Print head 306 prints continuously characters, patterns, etc., consisting of dot combinations while moving in a direction rectangular to the dot line. Main memory 302 includes ring buffer 303 where dot data or pulse interval set data is stored circularlly, and data from buffer 303 is stored in dot buffer register 305, and this dot data is controlled by direct memory access DMA control unit 304 to drive head 306. Thus, the moving speed of head 306 is changed according to print patterns to control the print time, so that the effective print time can be shortened without increment of the memory capacity.
COPYRIGHT: (C)1980,JPO&Japio
JP13788378A 1978-11-10 1978-11-10 Dot print control unit Pending JPS5566073A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13788378A JPS5566073A (en) 1978-11-10 1978-11-10 Dot print control unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13788378A JPS5566073A (en) 1978-11-10 1978-11-10 Dot print control unit

Publications (1)

Publication Number Publication Date
JPS5566073A true JPS5566073A (en) 1980-05-19

Family

ID=15208906

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13788378A Pending JPS5566073A (en) 1978-11-10 1978-11-10 Dot print control unit

Country Status (1)

Country Link
JP (1) JPS5566073A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53120429A (en) * 1977-03-29 1978-10-20 Hitachi Ltd Printing apparatus of dot type

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53120429A (en) * 1977-03-29 1978-10-20 Hitachi Ltd Printing apparatus of dot type

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