JPS6463171A - Thermal transfer printer - Google Patents
Thermal transfer printerInfo
- Publication number
- JPS6463171A JPS6463171A JP62219762A JP21976287A JPS6463171A JP S6463171 A JPS6463171 A JP S6463171A JP 62219762 A JP62219762 A JP 62219762A JP 21976287 A JP21976287 A JP 21976287A JP S6463171 A JPS6463171 A JP S6463171A
- Authority
- JP
- Japan
- Prior art keywords
- printed density
- printed
- gradation
- heat generating
- storage means
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, 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
- B41J2/315—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material
- B41J2/32—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material using thermal heads
- B41J2/35—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material using thermal heads providing current or voltage to the thermal head
- B41J2/355—Control circuits for heating-element selection
- B41J2/36—Print density control
Landscapes
- Accessory Devices And Overall Control Thereof (AREA)
- Electronic Switches (AREA)
Abstract
PURPOSE:To easily correct unevenness of printed density, by providing a converting means for such a conversion as to correct the gradation of printing line input data for picture elements corresponding to respective heat generating resistors on the basis of printed density data read from a storage means. CONSTITUTION:The printed density of each picture element corresponding to each heat generating resistor in a line thermal head 4 is detected from a sample print row printed on a recording paper, by an optical printed density detecting means (5-8), and the printed density data thus obtained is stored in a storage means 12. At the time of printing, the gradation of printing line input data on the basis of each picture element corresponding to each heat generating resistor in the thermal head 4 is corrected by a D/T converter 15 for the printing line input data, based on the printed density data read from the storage means 12. For example, when an input gradation is high, an energization time for the resistors is prolonged to enlarge the size of dots transferred onto a recording paper 3, thereby reducing unevenness of printed density in a main scanning direction.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62219762A JPS6463171A (en) | 1987-09-02 | 1987-09-02 | Thermal transfer printer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62219762A JPS6463171A (en) | 1987-09-02 | 1987-09-02 | Thermal transfer printer |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6463171A true JPS6463171A (en) | 1989-03-09 |
Family
ID=16740603
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62219762A Pending JPS6463171A (en) | 1987-09-02 | 1987-09-02 | Thermal transfer printer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6463171A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01281960A (en) * | 1988-05-10 | 1989-11-13 | Mitsubishi Electric Corp | Devices for detecting and correcting recording density irregularity and method for correcting the irregularity |
JPH02286341A (en) * | 1989-04-28 | 1990-11-26 | Canon Inc | Picture image recorder |
JPH02299862A (en) * | 1989-05-13 | 1990-12-12 | Kyocera Corp | Thermal head, recording device using it and device for preparation of recording density correction data |
JPH04147870A (en) * | 1990-10-11 | 1992-05-21 | Fuji Photo Film Co Ltd | Method for correcting density in image recording |
US9670111B2 (en) | 2012-09-18 | 2017-06-06 | National University Corporation Hokkaido University | Catalyst for producing isobutylene and method for producing isobutylene using the same |
-
1987
- 1987-09-02 JP JP62219762A patent/JPS6463171A/en active Pending
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01281960A (en) * | 1988-05-10 | 1989-11-13 | Mitsubishi Electric Corp | Devices for detecting and correcting recording density irregularity and method for correcting the irregularity |
JPH02286341A (en) * | 1989-04-28 | 1990-11-26 | Canon Inc | Picture image recorder |
JPH02299862A (en) * | 1989-05-13 | 1990-12-12 | Kyocera Corp | Thermal head, recording device using it and device for preparation of recording density correction data |
JPH04147870A (en) * | 1990-10-11 | 1992-05-21 | Fuji Photo Film Co Ltd | Method for correcting density in image recording |
US9670111B2 (en) | 2012-09-18 | 2017-06-06 | National University Corporation Hokkaido University | Catalyst for producing isobutylene and method for producing isobutylene using the same |
US9815748B2 (en) | 2012-09-18 | 2017-11-14 | National University Corporation Hokkaido University | Catalyst for producing isobutylene and method for producing isobutylene using the same |
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