Device for verifying if thermal printer is operating correctly

Details Device for verifying if thermal printer is operating correctly Device for verifying if thermal printer is operating correctly

1987-09-03

1989-03-21

Wiecking, David A.

Typewriting machines

Including selection of type-face by...

Including error detection

400120, 346 76PH, B41J 120

Patent

active

048138029

ABSTRACT:
A method and apparatus is described for checking the operation of a thermal dot printer during a printing cycle. When a pattern is to be printed a count of the number of printing elements intended to be operated in the cycle is stored. A signal indicative of the total current drawn from a supply by the operated printing elements is compared with the stored count. If the comparison indicates that all or a sufficient number of elements have been operated to effect printing, operation of the printing elements in further printing cycles is permitted otherwise further printing is inhibited. In an alternative method the printing elements are operated to print data in machine readable form and the data is read to produce a signal which is compared with data intended to be printed. The printing elements may print the data in a form for visual inspection and in machine readable form. The printer may form part of a franking machine in which the printed data is a franking of a mail item.

REFERENCES:
patent: 4399208 (1982-07-01), Biedermann
patent: 4500893 (1985-02-01), Sakura et al.
patent: 4573058 (1986-02-01), Brooks
patent: 4587411 (1986-05-01), Obstfelder et al.
patent: 4595935 (1986-06-01), Brooks et al.
patent: 4673303 (1987-06-01), Sansone et al.
patent: 4699531 (1987-10-01), Vlinski, Sr. et al.

Affiliated with

Also associated with

Rating

Device for verifying if thermal printer is operating correctly does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Device for verifying if thermal printer is operating correctly, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Device for verifying if thermal printer is operating correctly will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-473743