Claims
- 1. A type wheel cassette loading mechanism in a printing apparatus having a platen, a carriage including cassette holding means movable toward and away from said platen, and a top cover pivotable between a closed position covering said platen and said carriage and an open position allowing access to said platen and said carriage, said type wheel loading mechanism comprising:
- an opening in said top cover, said opening having a size sufficient to pass a cassette therethrough and being positioned on said cover such that the cassette passing therethrough may only be introduced into said cassette holding means when said cassette holding means is moved away from said platen;
- a lid for selectively closing said opening; and
- engaging means on said lid and said cassette holding means responsive to the opening of said lid for permitting the cassette to be moved away from said platen and for permitting insertion of said cassette into said cassette holding means.
- 2. The mechanism as claimed in claim 1 wherein said engaging means comprise an engaging portion of said lid interfittable with an engaging portion of said cassette holding means.
- 3. The mechanism as claimed in claim 2 including:
- spring means for biasing the cassette held by said cassette holding means towards said opening;
- means for locking the cassette in said cassette holding means in opposition to said spring means upon insertion of said cassette therein; and
- means responsive to said movement of said cassette holding means away from said platen for releasing said means for locking.
- 4. The mechanism as claimed in claim 3 wherein said cassette holding means is pivotally mounted to said carriage adjacent a bottom thereof whereby pivoting of said cassette holding means provides said movement thereof, wherein said means for locking comprises a latch pawl resiliently engaging a cooperating portion of the cassette, and wherein said means for releasing comprise:
- a stop pawl pivotally mounted to said carriage and including a latch pawl engaging arm; and
- resilient means for resiliently pivoting said stop pawl to a position wherein said arm engages said latch pawl, said stop pawl including a portion engageable with said cassette holding means upon movement of said cassette holding means away from said platen for pivoting said stop pawl in opposition to said resilient means,
- whereby upon said movement of said cassette holding means away from said platen, said arm first disengages said latch pawl from said cooperating portion and subsequent engagement of said portion of said stop pawl and said cassette holding member pivot said stop pawl to release engagement of said arm said latch pawl.
- 5. A type wheel cassette loading mechanism in a printing apparatus having a platen, a carriage including cassette holding means which is provided with biasing means for biasing a cassette upwardly, and a top cover covering said platen and said carriage, said type wheel cassette loading mechanism comprising:
- an opening in said top cover, said opening having a size sufficient to pass the cassette therethrough and being positioned on said cover such that the cassette passing therethrough may only be introduced into said cassette holding means;
- a lid for selectively closing said opening;
- means for engaging said lid with said cassette holding means such that opening of said lid moves said cassette upwardly by a biasing force of said biasing means; and
- means responsive to the opening of said lid for permitting said cassette to be moved upwardly by said biasing means, and comprising locking means engageable with the cassette to lock the cassette in a loaded position against an action of said biasing means, and linkage means responsive to the lid being half-opened for disengaging the locking means from the cassette, and said linkage means being responsive to the lid being fully-opened for causing the locking means to regain a position in which the locking means is capable of locking the cassette when the cassette is depressed against the action of the biasing means.
- 6. A type wheel loading mechanism as claimed in claim 1, wherein said means for engaging comprises an engaging portion provided on an inner surface of the lid, engageable with an engaging portion of the cassette holding means, said engaging portion of the cassette holding means being interlocked therewith such that the cassette is loaded in the cassette holding means when the lid is closed and unloaded from the cassette holding means when the lid is opened.
Priority Claims (2)
Number |
Date |
Country |
Kind |
59-45078 |
Mar 1984 |
JPX |
|
59-120716 |
Jun 1984 |
JPX |
|
CROSS REFERENCE TO RELATED APPLICATION
This application is a continuation of copending U.S. patent application Ser. No. 708,564, filed Mar. 6, 1985, now adandoned.
US Referenced Citations (4)
Foreign Referenced Citations (6)
Number |
Date |
Country |
44861 |
Mar 1980 |
JPX |
144967 |
Nov 1981 |
JPX |
144969 |
Nov 1981 |
JPX |
144985 |
Nov 1981 |
JPX |
623516 |
Jun 1981 |
CHX |
2022022 |
Dec 1979 |
GBX |
Continuations (1)
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Number |
Date |
Country |
Parent |
708564 |
Mar 1985 |
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