JPS6487275A - Density gradation control type thermal printer - Google Patents
Density gradation control type thermal printerInfo
- Publication number
- JPS6487275A JPS6487275A JP24471887A JP24471887A JPS6487275A JP S6487275 A JPS6487275 A JP S6487275A JP 24471887 A JP24471887 A JP 24471887A JP 24471887 A JP24471887 A JP 24471887A JP S6487275 A JPS6487275 A JP S6487275A
- Authority
- JP
- Japan
- Prior art keywords
- gradation
- controlling part
- printing
- causes
- signal
- 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.)
- Granted
Links
Landscapes
- Electronic Switches (AREA)
Abstract
PURPOSE:To variably control a printing time according to the gradations of an image, by discriminating a maximum energization time for giving a maximum density gradation in each printing line, and finishing an energizing mode to switch to a cooling mode at the end of the maximum energization time. CONSTITUTION:A gradation data discriminating circuit 32 checks the bit status of each gradation data sent from a data comparator 28, and sends a detection signal DE to a timing controlling part 34 when a maximum energization time for giving a maximum density gradation in a printing line is over. On receiving the signal DE, the controlling part 34 resets a gradation counter 30, and causes a line memory 26 to stop a reading operation. The comparator 28 finishes generating the gradation data, the controlling part 34 causes a clock signal generating circuit 38 to stop outputting a clock signal, inputting to a shift register 12 is finished, generation of a latch signal by a latch signal generating circuit 40 is also stopped, and an energizing mode for a printing head 100 is finished. The timing controlling circuit 34 operates a timer 36, and when a predetermined cooling mode time is over, an output signal is generated from the timer 36, upon which the controlling part 34 causes a paper-feeding motor 44 to feed a paper by a one-line amount.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62244718A JP2830934B2 (en) | 1987-09-29 | 1987-09-29 | Density gradation control type thermal printer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62244718A JP2830934B2 (en) | 1987-09-29 | 1987-09-29 | Density gradation control type thermal printer |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6487275A true JPS6487275A (en) | 1989-03-31 |
JP2830934B2 JP2830934B2 (en) | 1998-12-02 |
Family
ID=17122873
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62244718A Expired - Lifetime JP2830934B2 (en) | 1987-09-29 | 1987-09-29 | Density gradation control type thermal printer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2830934B2 (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60104351A (en) * | 1983-11-12 | 1985-06-08 | Victor Co Of Japan Ltd | Thermal transfer recording system |
JPS63281869A (en) * | 1987-05-14 | 1988-11-18 | Ricoh Co Ltd | Image recording apparatus |
JPS63290769A (en) * | 1987-05-22 | 1988-11-28 | Ricoh Co Ltd | Image recorder |
-
1987
- 1987-09-29 JP JP62244718A patent/JP2830934B2/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60104351A (en) * | 1983-11-12 | 1985-06-08 | Victor Co Of Japan Ltd | Thermal transfer recording system |
JPS63281869A (en) * | 1987-05-14 | 1988-11-18 | Ricoh Co Ltd | Image recording apparatus |
JPS63290769A (en) * | 1987-05-22 | 1988-11-28 | Ricoh Co Ltd | Image recorder |
Also Published As
Publication number | Publication date |
---|---|
JP2830934B2 (en) | 1998-12-02 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0018762B1 (en) | Thermal printing apparatus | |
GB1421474A (en) | Printer control system | |
EP0279637B1 (en) | Thermal printer | |
JPS57156282A (en) | Driving method of thermo sensitive recording head | |
JPS6487275A (en) | Density gradation control type thermal printer | |
KR0128168B1 (en) | Paper saving device for printer | |
JPS62279964A (en) | Thermal head controlling method | |
JP3073359B2 (en) | Image printing method and non-impact printer using the same | |
JPS5585984A (en) | Control system for dot printer | |
GB2258550A (en) | Dot printer controller | |
JPS6078770A (en) | Driving method of line thermal head | |
GB2233175A (en) | Printer and stepping motor control | |
JP2758262B2 (en) | Non-impact printer | |
JPH0650199Y2 (en) | Printer | |
JPH0325115B2 (en) | ||
KR100213765B1 (en) | Temperature control device for facsimile | |
JP3110853B2 (en) | Recording method and apparatus | |
JP3036547B2 (en) | Printer | |
KR0127122B1 (en) | Thermal head printer | |
JPH02125763A (en) | Recording method and apparatus therefor | |
JPH09226158A (en) | Printing control circuit of dot impact printer | |
KR950001202B1 (en) | Head gap control device and method in printer | |
JPS6356072B2 (en) | ||
KR930006827B1 (en) | Head driving device for fax | |
JPS645848A (en) | Gradation printing system |