Incremental printing of symbolic information – Thermal marking apparatus or processes
Reexamination Certificate
2006-07-24
2008-10-14
Feggins, K. (Department: 2861)
Incremental printing of symbolic information
Thermal marking apparatus or processes
Reexamination Certificate
active
07436418
ABSTRACT:
A thermal printer1and control method for controlling print speed to prevent variation in printing pitch due to frequent slight changes in the print speed following a significant change in print speed. The print speed, which is the speed at which the print medium i.e., paper is conveyed when printing, is controlled based on known print speed control factors. The thermal printer comprises a paper feed mechanism for conveying the print medium at a controlled print speed passed a thermal print head, a print speed control unit9for controlling the print speed of the paper feed mechanism based on the print speed control factors, a print speed change acquisition unit3for determining the change in the print speed over a predetermined time, and a comparison unit7for determining if the change in print speed exceeds a predetermined threshold value. The print speed control unit9limits change in the print speed based on the print speed control factors for a predetermined time after the comparison unit7determines that the change in print speed exceeds the threshold value.
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Koyabu Akira
Nakajima Satoshi
Takiguchi Yuji
Baker & Hostetler LLP
Feggins K.
Seiko Epson Corporation
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