JPS6453875A - Density gradation control type thermal printer - Google Patents
Density gradation control type thermal printerInfo
- Publication number
- JPS6453875A JPS6453875A JP62210831A JP21083187A JPS6453875A JP S6453875 A JPS6453875 A JP S6453875A JP 62210831 A JP62210831 A JP 62210831A JP 21083187 A JP21083187 A JP 21083187A JP S6453875 A JPS6453875 A JP S6453875A
- Authority
- JP
- Japan
- Prior art keywords
- block
- end parts
- changed over
- strobe signal
- energization
- 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
Links
Landscapes
- Electronic Switches (AREA)
- Fax Reproducing Arrangements (AREA)
Abstract
PURPOSE:To control the recorded density of picture elements at block end parts to a desired density and contrive higher quality, by energizing heat generating resistor elements at the block end parts for a predetermined period of time also in intervals between the actions of energization in a unit energization time, thereby compensating for the loss of heat due to radiation. CONSTITUTION:Heat generating resistor elements R193-R256 and R257-R320 in the vicinity of boundary between a first block and a second block are supplied with strobe signals ST1, ST2 from a strobe signal generating circuit 20 through terminals (a) on one side of switches 50, 52. While the first strobe signal ST1 is generated, the switch 50 is changed over to the side (a), whereas the switch 52 is changed over to the side (b), and a one-shot pulse SP with a predetermined duration is given from a one-shot circuit 22 to the elements R257-R320, resulting in energization. When the second strobe signal ST2 is generated, the switches 50, 52 are changed over to the opposite side. It is thus possible to control the recorded density at block end parts to a desired density, and to contrive higher quality.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62210831A JPS6453875A (en) | 1987-08-25 | 1987-08-25 | Density gradation control type thermal printer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62210831A JPS6453875A (en) | 1987-08-25 | 1987-08-25 | Density gradation control type thermal printer |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6453875A true JPS6453875A (en) | 1989-03-01 |
Family
ID=16595835
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62210831A Pending JPS6453875A (en) | 1987-08-25 | 1987-08-25 | Density gradation control type thermal printer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6453875A (en) |
-
1987
- 1987-08-25 JP JP62210831A patent/JPS6453875A/en active Pending
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