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The HP 82240 thermal printer models

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Infrared transmitting was choosen as the best interface between the calculator and the printer. The cost of adding the infrared transmitting circuitry in the calculator is minimal. The receiver end of the link is substantially more expensive and area consuming. This resulted in a one way communication from the calculator towards the printer. Because no feedback can be given from the printer side towards the calculator, the software in the calculator has to prevent buffer overruns. A nice article about this subject is referenced below.

HP82240AThe HP 82240A (Redeye)

Introduced end 1986.

This thermal printer is controlled via an infra- red link. This printer can be used in combination with calculators from the Champion, Charlemagne, Coconut series and some models from the Pioneer series. To be used in combination with the HP-41 series an extra module is available, the HP 82242A.

Serial number: 2911S10381

 

 

HP82240BThe HP 82240B (Visine)

Introduced in august 1989.

Looks identical to the HP 82240A but has an extra character set (Roman8 en ECMA94), and a LED which indicates when the printer is active. This printer will switch to standby mode to save the batteries when not used for 10 minutes.

Serial number: ID15000426

 

 

The manuals

HP82240A Manual HP82240B Manual

To download the pdf version of these manuals, click on the manual.

 

Accessories

Printout

HP 82045A. Blue print thermal paper.

Test print of this printer on blue print thermal paper. There is also black print thermal paper available HP 82175A.

The bottom line BAT: 4 shows the status of the batteries. This status is rated between 0 to 5.
   
Adapter

HP 82241A. Main adapter of the printer.

Output: 9V AC, 13.5VA. The adapter contains only a main transformer. See also my charger and adapter site.

Two interesting articles about the development of the HP 82240A printer can be found in the HP Journal of October 1987. These articles can be downloaded here:

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HP 82240A and HP 82240B related links

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