| 摘要 |
A digital stamp is described which can print out a message using a moveable inkjet printhead ( 30 ) which can be moved by a mechanical arrangement of arm ( 35 ) and pivots ( 33, 36 ). A cartridge ( 20 ) containing ink feeds the printhead ( 30 ) with monochrome or color ink via lines ( 52 ). Movement of the upper section ( 10 ) of the housing towards the lower section ( 12 ) of the housing moves the arm ( 35 ) to slide the printhead ( 30 ) across the aperture ( 34 ) in the lower section ( 12 ) while at the same time electronic signals fed to the printhead ( 30 ) print out the stored message. A spring ( 42 ) returns the printhead ( 30 ) to its inoperative position once having traversed the opening ( 34 ). The stored message may be fixed, replaceable or programmable or may be one from a fixed number of stored or updateable messages or images or can be input by an attached apparatus, for example, a CCD imager, to record an image and to print it via the printhead ( 30 ). The digital stamp can replace a rubber stamp in an office or may be used to print labels in a retail environment. An infra-red ink may also be supplied which can be used to print an encoded digital message with or on top of a visual print-out as a security measure when a printhead having the necessary number of inkjet nozzles is employed.
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