JPH0334878A - Printer - Google Patents

Abstract

PURPOSE:To set the printing sound generated from a printer to the range of the printing sound desired by an operator by providing a printing sound detection element, a noise setting memory part, a comparator comparing and collating the output from the detection element with the reference value of the memory part and a control part changing over a printing speed on the basis of the output of the comparator. CONSTITUTION:A printing sound detection element 2 inputs the output proportional to the level of inputted printing sound 1 to a comparator 3. A noise reference level setting memory part 4 is connected to the other input of the comparator 3 and can be set by the command from a higher rank apparatus corresponding to a noise level. The comparator 3 compares and collates the printing sound level inputted from the printing sound detection element 2 on the basis of the noise level stored in the memory part 4 to input the result to a control part 5. Further, the control part 5 controls a printing speed change-over part 6 corresponding to the signal inputted from the comparator 3 and operates so as to converge the printing sound level to the reference noise level stored in the memory part 4. Printing can be performed while a printing speed is automatically changed over by the noise reference level setting memory part 4 and the comparator 3 through the control part 5.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an impact printer, and more particularly to a printing method that prints while keeping the noise level generated from the printing mechanism within a set value.

[Conventional technology]

Conventional impact printers produce high printing noise from the printing mechanism, which is the biggest drawback of the impact printer. Moreover, as a recent trend, the biggest challenge is to satisfy the mutually contradictory demands of higher speed and lower noise.

[Problem to be solved by the invention]

A first object of the present invention is to provide a printer in which the printing sound generated by the printer can be set within the range of printing sound desired by the operator.

A second object of the present invention is to realize an optimum printing speed within a set level without reducing the printing speed excessively.

[Means to solve the problem]

The present invention includes an element for detecting printing noise generated from a printer and a storage section for storing the noise level according to a command from a host device, and outputs from the detection element and settings in the storage section. The printer automatically realizes the optimum printing speed within the range of the reference noise level set in the storage section while switching the printing speed by comparing and comparing the results with the reference noise level set in the storage section and sending the results to the control section. provide.

〔Example〕

The present invention will be explained in detail with reference to the drawings.

FIG. 1 is a block diagram showing one embodiment of the present invention. A printing sound 1 generated from the printer is detected by a printing sound detection element 2. In the case of a dot printer, the printing sound generated from the printing mechanism has the following relationship.

(1) - There is a close relationship with the number of dots in simultaneous printing.

For example, in the case of a 24-pin Kanji printer, there are cases in which printing is performed with only one bin and cases in which printing is performed simultaneously with all 24 pins, and the printing sound varies greatly depending on these printing conditions.

(2) Even when printing the same number of dots, the printing sound differs depending on the printing speed.

The print sound detection element 2 inputs an output proportional to the level of the input print sound 1 to the comparator 3. The other input of the comparator 3 is connected to a noise reference level storage section 4 which is set by a command from the host device, and the storage section 4 can be set by a command from the host device depending on the noise level. Therefore, the comparator 3 compares and verifies the print sound level input from the print sound detection element 2 using the noise level stored in the noise storage section 4 as a reference, and inputs the result to the control section 5. Furthermore, the control section 5
controls the printing speed switching unit 6 in accordance with the signal input from the comparator 3, and operates so as to converge to the reference noise level stored in the storage unit 4.

For example, as explained above, the printing speed switching unit 6 has the following three types of printing speeds.

(1) Normal printing speed (2) Printing at 50% of the normal printing speed (3) Printing at 25% of the normal printing speed The above printing speed can be switched by command in the noise standard storage section 4
The purpose of the present invention is to provide a printer that can perform printing while automatically switching the above-mentioned printing speed via a control section 5 using a comparator 3 that compares the output of the printing sound detection element 2 with the output of the printing sound detection element 2.

〔Effect of the invention〕

With the configuration described above, the present invention sets the printing sound generated from the printer within the range desired by the operator, and
Moreover, there is an effect that an optimum printing speed can be achieved within the setting range.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing one embodiment of the present invention. 1...Printing sound, 2...Printing sound detection element,
3... Comparator, 4... Noise setting storage section, 5... Control section, 6... Printing speed switching section.

Claims (1)

[Claims] It has a printing sound detection element, a noise setting storage section, a comparator that compares the output from the detection element and a reference value of the storage section, and a control section that switches the printing speed based on the output of the comparator. A printer characterized by: