Back to results
US 2006/0233581 A1Published application
Image generating apparatus
AssigneeFunai Electric Co., Ltd.
InventorKunio Sawai
Life of this patent
Estimating the term…
Abstract
An image generating apparatus capable of rotating a pressing member pressing a print head against a platen roller at a large rotation angle with a cam is obtained. This thermal transfer printer (image generating apparatus) comprises a drive cam for driving the pressing member. This drive cam includes a cardioid cam engaging with a cam pin provided on the pressing member and a protrusion, constituted of a first protrusion and a second protrusion, for restraining the cam pin from moving by force other than that of the drive cam.
Claims16
An image generating apparatus comprising:
- a print head for printing:
- a platen roller opposed to said print head;
- a rotatably supported pressing member, having a cam pin, for pressing said print head against said platen roller by pressing the upper portion of said print head;
- and
- a drive cam for driving said pressing member, wherein
- said drive cam includes a cardioid cam engaging with said cam pin provided on said pressing member and a movement control member for restraining said cam pin from moving by force other than that of said drive cam when said cam pin reaches a prescribed position of said cardioid cam.
3 more elements
An image generating apparatus comprising:
- a print head for printing;
- a platen roller opposed to said print head;
- a rotatably supported pressing member, having a cam pin, for pressing said print head against said platen roller by pressing the upper portion of said print head;
- and
- a drive cam for driving said pressing member, wherein
- said drive cam includes a cardioid cam engaging with said cam pin provided on said pressing member and a movement control member for restraining said cam pin from moving by force other than that of said drive cam when said cam pin reaches a prescribed position of said cardioid cam,
- said movement control member of said drive cam is a protrusion, integrally provided on the side surface of said drive cam, including a first protrusion for restraining said cam pin from moving in a first direction on said prescribed position of said cardioid cam and a second protrusion for restraining said cam pin from moving in a second direction on said prescribed position of said cardioid cam,
- said pressing member includes a contact portion coming into contact with said protrusion of said drive cam,
- so that said contact portion of said pressing member comes into contact with said protrusion thereby restraining said cam pin provided on said pressing member from moving on said prescribed position,
- said cardioid cam includes a cardioid cam groove provided on the side surface of said drive cam, and
- a first gear is formed on the outer periphery of said drive cam.
8 more elements
Dependencies are inferred from the claim text.