US 2004/0165017 A1 · Printer and print control method

Abstract

In a printer, an MPU makes a flash ROM store a temperature read by a temperature sensor at the time of setting of a correction value and a misalignment correction number indicating a misalignment correction value. At the time of reciprocating print motion of a printer, the printer makes the temperature sensor measure an actual ambient temperature before backward printing and obtains a difference between the present temperature and the temperature at the time of setting of the correction value. A print start delay time which indicates timing between a point of time of driving a carriage motor and a point of time of starting the backward printing is corrected in accordance with the temperature difference. The printer starts the backward printing at the timing delayed for the corrected print start delay time.

Claims3

Dependent claims

A printer comprising:

a print head for making reciprocating motion transversely with respect to a recording medium to thereby perform both forward printing and backward printing on the recording medium;
a misalignment correction unit for correcting misalignment between the forward printing and the backward printing;
a temperature detection unit for detecting an ambient temperature;
a setting unit for setting a correction reference value for the misalignment correction unit;
a storage unit for storing the correction reference value set by the setting unit and the ambient temperature detected by the temperature detection unit when the correction reference value is set;
and
a calculation unit for calculating a misalignment correction value by revising the correction reference value on the basis of a result of comparison between the ambient temperature stored in the storage unit and an ambient temperature at the time of printing;
wherein the misalignment correction unit corrects misalignment on the basis of the misalignment correction value calculated by the calculation unit.

5 more elements

Dependencies are inferred from the claim text.

Printer and print control method

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Printer and print control method

Life of this patent

Abstract

Claims3