by selective transfer of ink from ink carrier, e.g. from ink ribbon or sheet

Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed > characterised by selective application of heat to a heat sensitive printing or impression-transfer material > using thermal heads > by selective transfer of ink from ink carrier, e.g. from ink ribbon or sheet

Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed (mounting, arrangement or disposition of types or dies B41J1/00) > characterised by selective application of heat to a heat sensitive printing or impression-transfer material (B41J2/385, B41J2/435 take precedence) > using thermal heads > by selective transfer of ink from ink carrier, e.g. from ink ribbon or sheet