Speed control of a label printing apparatus

Details Speed control of a label printing apparatus Speed control of a label printing apparatus

1997-06-19

1999-09-28

Burr, Edgar

Typewriting machines

Sheet or web

For feeding web record-medium

400279, 400 76, 400 61, B41J 1126

Patent

active

059575964

ABSTRACT:
The present invention relates to a label printing apparatus for printing image data onto a tape. The label printing apparatus has a memory for storing image data to be printed onto the tape, a print head for recording the image data dot wise onto the tape in subsequent printing cycles, a platen for conveying the recording medium relative to the print head and means for determining the number of dots to be activated in each printing cycle. In order to obtain high print quality, a speed adjuster is provided to control the speed of the platen in response to the number of image data stored in the memory and the number of dots to be activated in the present printing cycle. The present invention also relates to a method for controlling the platen and the print head to avoid misalignment of subsequent printing lines, when the platen must stop due to lack of data in the memory.

REFERENCES:
patent: 3990559 (1976-11-01), Martin et al.
patent: 4169991 (1979-10-01), Ross
patent: 4521813 (1985-06-01), Yoshida et al.
patent: 4653940 (1987-03-01), Katsukawa
patent: 5043748 (1991-08-01), Katayama et al.
patent: 5152619 (1992-10-01), Niikawa
patent: 5326183 (1994-07-01), Kasai
patent: 5534890 (1996-07-01), Krug et al.
patent: 5608443 (1997-03-01), Palmer et al.

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