JPH0445058U - - Google Patents
Info
- Publication number
- JPH0445058U JPH0445058U JP8501190U JP8501190U JPH0445058U JP H0445058 U JPH0445058 U JP H0445058U JP 8501190 U JP8501190 U JP 8501190U JP 8501190 U JP8501190 U JP 8501190U JP H0445058 U JPH0445058 U JP H0445058U
- Authority
- JP
- Japan
- Prior art keywords
- print head
- head
- separation
- cam
- drive mechanism
- 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
- 238000000926 separation method Methods 0.000 claims description 8
Landscapes
- Common Mechanisms (AREA)
Description
第１図から第５図は本考案の印字ヘツドの接離
駆動機構の一実施例を示したもので、第１図は強
い圧接力によるヘツドダウン状態を示す平面図、
第２図はわずかなヘツドアツプ状態を示す平面図
、第３図は弱い圧接力によるヘツドダウン状態を
示す平面図、第４図は大きなヘツドアツプ状態を
示す平面図、第５図はカムギアの平面図、第６図
は従来の一般的なプリンタを示す斜視図、第７図
は従来の印字ヘツドの接離駆動機構を示す平面図
、第８図は従来のカムギアの平面図である。
６……キヤリツジ、７……印字ヘツド、２５…
…駆動モータ、２９……揺動板、３０……第１ヘ
ツド駆動用ギア、３１……第２ヘツド駆動用ギア
、３２……カムギア、３４……カム溝、３７……
接離駆動用カム溝、３８……ヘツド接離用カムレ
バー、４４……ばね圧調整用カム溝、４６……ば
ね圧調整用カムレバー、４８……付勢ばね。
1 to 5 show an embodiment of the printing head contact/separation drive mechanism of the present invention, and FIG. 1 is a plan view showing the head-down state due to strong pressure contact;
Fig. 2 is a plan view showing a slight head up state, Fig. 3 is a plan view showing a head down state due to weak pressure contact force, Fig. 4 is a plan view showing a large head up state, Fig. 5 is a plan view of the cam gear, 6 is a perspective view showing a conventional general printer, FIG. 7 is a plan view showing a conventional print head approach/separation drive mechanism, and FIG. 8 is a plan view of a conventional cam gear. 6...Carriage, 7...Print head, 25...
... Drive motor, 29 ... Rocking plate, 30 ... Gear for driving the first head, 31 ... Gear for driving the second head, 32 ... Cam gear, 34 ... Cam groove, 37 ...
Cam groove for driving contact and separation, 38...cam lever for head contact and separation, 44...cam groove for adjusting spring pressure, 46...cam lever for adjusting spring pressure, 48...biasing spring.
Claims (1)
前記印字ヘツドの接離駆動を行なうカムギアを配
設するとともに、このカムギアに印字ヘツドを強
弱ヘツドダウン位置および大小ヘツドアツプ位置
にそれぞれ選択的に保持するカム溝を形成し、こ
のカム溝により回転動作されて前記印字ヘツドを
プラテンに対して接離動作させるヘツド接離用カ
ムレバーを配設してなる印字ヘツドの接離駆動機
構において、前記カムギアに、強ダウン部、小ア
ツプ部、弱ダウン部、大アツプ部の順序で形成さ
れたカム溝を形成したことを特徴とする印字ヘツ
ドの接離駆動機構。 A cam gear is provided which is rotated in forward and reverse directions by the forward and reverse rotation drive of the drive motor to drive the print head toward and away from the print head, and a cam groove is provided in the cam gear to selectively hold the print head in a strong/weak head-down position and a large/small head-up position. In the print head contact/separation drive mechanism, the print head contact/separation drive mechanism is provided with a head contact/separation cam lever which is rotated by the cam groove and moves the print head toward and away from the platen. A printing head contact/separation drive mechanism characterized in that a cam groove is formed in the following order: a small up part, a weak down part, and a large up part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8501190U JPH0445058U (en) | 1990-08-09 | 1990-08-09 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8501190U JPH0445058U (en) | 1990-08-09 | 1990-08-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0445058U true JPH0445058U (en) | 1992-04-16 |
Family
ID=31816193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8501190U Pending JPH0445058U (en) | 1990-08-09 | 1990-08-09 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0445058U (en) |
-
1990
- 1990-08-09 JP JP8501190U patent/JPH0445058U/ja active Pending