what is impact printer?

Impact Printer


printer is an online output device that prints the information received from the computer on paper. This copy of the output on the paper is called hard copy. The output of the information from the computer is very fast. And the printer could not work so fast, so the need was felt that the information can be stored in the printer itself, so the printer also has a memory from where it prints the results slowly.


"A printer is an output device that converts soft copy into hard copy." 

Impact Printers are printers that leave their Impact, such as this method of typewriter printing, similar to the typewriter method that has a metal hammer or print head. Which collides with paper and ribbon. In Impact Printing, characters or characters emerge on paper using the Solid Font or Dot Matrix method. There are several methods of Impact Printer. like-

  • Dot Matrix Printer.
  • Daisy Wheel Printer.
  • line Printer.
  • Chain Printer.
  • Drum Printer etc.

Dot Matrix Printer

It is an Impact Printer so it makes a lot of noise while printing. The print head of this printer has a Matrix of several pins and each pin has a ribbon and A dot on the paper is printed by a dot. Several dots form a character together. The print head has a vertical group of 7, 9, 14, 18 or 24 pins. Horizontal group ) Is the pin of one column at a time exits the print head Prints Dots so that a character is formed in several steps and the print head moves in the direction of the line Printing speed of Dot Matrix Printer 30 to 600 characters per second (CPS-Character Per Second) Dot Matrix Printer does not have pre-built currency characters, so it can print different size-type and character graphics (Graphics) etc. P With the help of a print head, we create characters which are obtained from memory in the form of codes (0 and 1). The print head contains an electronic circuit that decodes the character.

impact printer
passbook dot matrix- impact printer

In dot-matrix printers, a print head moves over the page. Characters or graphics are created using a group of pins. These pins press an ink ribbon onto the paper to form a dot.

Each character or image is made up of a series of dots. These printers are usually cheap and durable, so they are still used as invoice printers by many businesses.



They are slow and make noise at the time of printing, and the output quality is the lowest compared to all other types.



Typically printing is done with a speed of 50 to 500 characters per second depending on the quality of the printing. The quality of the print depends on the number of pins used (from 9 to 24). The 24 pin dot-matrix printer produces more dots resulting in better quality and clearer character than a 9 pin dot-matrix printer.

Advantage

  • Dot matrix printers are actually less expensive. Since they are so cheap they are easy to buy and use.
  • The cost of maintaining a dot matrix printer is small.
  • The cost of printing a dot matrix printer is also low. 

Disadvantage:

  • The quality of print of dot matrix printer is very low.
  • Dot matrix printers make a lot of noise while printing.
  • Paper jam handling is very difficult.
  • Dot matrix printers have lower speed than other ink jet printers and laser printers.
  • The print head is likely to be damaged due to the bend of the pin.

Daisy Wheel Printer


It is an Impact Printer with Solid Font, it is named Daisy Wheel because its print head shape resembles a floral daisy wheel Daisy Wheel Printer.  Is a slow printer but the clarity of its output is high, so it is used for printing letters etc. And in its print head, it is called Letter Quality Printer. A wheel is a wheel, in which a character's solid font is embossed in each spoke, the wheel moves in the horizontal direction of the paper and the printable character's spoke rotates in the wheel. A small hemmer arrives at the print position from the spoke ribbon and collides on the paper so that the letter is printed on the paper. These types of printers are now very little used.

impact printer
 impact printer

Daisy wheel printers only print characters and symbols and cannot print graphics. They are typically slough with a printing speed of about 10 to 75 characters per second. By 1980, daisy wheel printers were the dominant printers for quality printing, but the prices of laser and inkjet printers dropped and the quality of dot matrix printers improved, making daisy wheel printers now obsolete.


The work of a daisy wheel printer is very similar to a typewriter. A circular printing element (known as the daisy wheel shown in the image below) is the heart of these printers that have all the text, numeric characters, and simple molds on each wing of the circle's circumferences. The printing element rotates rapidly with the help of a servo motor and the printing hammer strikes the characters on the paper.

Advantage:

  • Low initial unit cost.
  • Low running cost.
  • Low maintenance cost.
  • Able to perform in hot and dusty conditions.

Disadvantage:

  • Low resolution output.
  • Noise.
  • Ribbons are often replaced.

Line Printer


It is also an Impact Printer. Large computers require high speed printers. High speed printers can print one line page at a time instead of printing one character at a time. Speeds range from 300 to 3000 lines per minute. These printers are used for large tasks in mini and mainframe computers. 

It is similar to a daisy wheel printer. However, these printers can print on an entire line at a time. It uses BufferMary to store information of the line to be printed. These lines are then printed on paper at a rate of 500 to 3000 lines per minute. They make a lot of noise while printing.

Line printers are still widely used in data centers and industrial environments and can print multi-part forms very quickly.



impact printer
 impact printer


High speed line printers print 1000–2000 lines per minute and are therefore useful for printing a large number of address labels, payroll checks, statements, or bills.


Advantage:

  • Line printers can print multi-part forms very fast.
  • Line printers are usually enclosed in a cabinet to reduce noise levels.

Disadvantage:

  • Standard line printers can only use pin feed paper and they can print only with black ink.

Drum Printer


A Drum Printer consists of a fast moving drum (Drum) on whose surface the characters emerge, a band (Band) is a set of all the letters (Set), many such bands on the entire drum Are so that the characters can be printed in each position of the line on the paper. The drums rotate rapidly and print a line in a rotation. A fast Hammer tuck against the paper on the appropriate character of each band. The expertise and are splash a line on a full rotation.

The drum printer consists of a solid, cylindrical drum with a character raised in a band on its surface. The value of print positions in the drum corresponds to the amount on the page. This number ranges from 80 to 132 print positions.

The drum rotates with a fast speed. There is a print hammer located on the back of the paper for each possible print position. These hammers strike on paper with ink ribbon with the appropriate character on the drum. One line of drum is required to print each line. This means that not all characters in a line print at the same time, but the time it takes to print the entire line is fast enough to call them line printers.


impact printer
 impact printer

Typical speed of line printers can range from 300 to 2000 lines per minute.

Chain Printer


This printer consists of a fast moving chain called a print chain. Characters are printed in the chain. Each link has a character font in each print position. But Hammer is fitted so that Hammer collides on the paper and prints one line at a time.


A chain printer utilizes a sequence of characters that are wrapped around two pulleys. There's a hammer for each print place like a drum printer. The circuitry inside the printer detects when the correct character appears at the desired print location on the page. The hammer then strikes the page, the paper presses through a ribbon, and the characters are printed in the desired print position.


 impact printer
 impact printer

The chain rotates until all required print positions are reached on the line. The page then proceeds to print the next line. Chain printer speed ranges from 400 to 2500 characters per minute.

Band Printer


This printer works like a chain printer, it has a print band of steel in place of the chain. it also use Hammer to prints one line at a time on target.


 impact printer

 impact printer

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 impact printer

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