JPS641573A - Transfer type printer - Google Patents
Transfer type printerInfo
- Publication number
- JPS641573A JPS641573A JP15813287A JP15813287A JPS641573A JP S641573 A JPS641573 A JP S641573A JP 15813287 A JP15813287 A JP 15813287A JP 15813287 A JP15813287 A JP 15813287A JP S641573 A JPS641573 A JP S641573A
- Authority
- JP
- Japan
- Prior art keywords
- spring
- platen
- printing head
- printing
- temp
- 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
Abstract
PURPOSE: To prevent such a state that a printing head is held pressed to a platen when a power source is cut off by reducing the wt. and volume of a carriage, by using a shape memory alloy as the material of the spring for pressing the printing head to the platen at the time of printing operation.
CONSTITUTION: When a current is supplied to a pusher spring 5 made of a unidimensional shape memory alloy by the input of a printing order, said spring 5 generates heat and develops its shape memory effect at certain definite temp. or higher to be ready to return to the stored shape. This force becomes larger than the tensile force of a release spring 4 to press a printing head 1 to a platen 11. When the input of the printing order is eliminated, the supply of a current to the spring 5 is stopped and the generation of heat is stopped and the temp. of the spring 5 is lowered. At this time, the spring 5 becomes a stretched state by the release spring 4 and the printing head 1 is separated from the platen 11. The temp. of the spring 5 also lowers to the ambient temp. when the power source of a printer is cut off during printing operation and the printing head 1 is returned by the release spring 4 to be separated from the platen 11.
COPYRIGHT: (C)1989,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62-158132A JPH011573A (en) | 1987-06-25 | transfer printer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62-158132A JPH011573A (en) | 1987-06-25 | transfer printer |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS641573A true JPS641573A (en) | 1989-01-05 |
JPH011573A JPH011573A (en) | 1989-01-05 |
Family
ID=
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7068401B2 (en) | 2002-05-31 | 2006-06-27 | Hewlett-Packard Development Company, L.P. | Optical scanning apparatus having a carriage locking device |
US7724276B2 (en) | 2003-11-03 | 2010-05-25 | Hewlett-Packard Development Company, L.P. | Optical assembly lock/unlock apparatus and method |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7068401B2 (en) | 2002-05-31 | 2006-06-27 | Hewlett-Packard Development Company, L.P. | Optical scanning apparatus having a carriage locking device |
US7724276B2 (en) | 2003-11-03 | 2010-05-25 | Hewlett-Packard Development Company, L.P. | Optical assembly lock/unlock apparatus and method |
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