Abstract: When a number of input key data sequentially stored in a first line buffer memory from a keyboard coincide with the contents of a right margin memory in a RAM, the line data up to the word immediately preceding the word reaching a preset right margin is sequentially transferred from the first line buffer memory to a second line buffer memory. The number of input key data from the immediately preceding word to the preset right margin is counted. In accordance with the count thus obtained, a spacing adjustment of the spaces left between words of the line data transferred to the second line buffer memory, is performed under the control of a CPU prior to printing of the words according to the contents of the second line buffer memory.

Abstract: An electronic typewriter comprises a character-bearing disk movable along the platen and a selector to space selected characters according to a plurality of constant spaces or proportional spaces. The electronic unit provides a line buffer on which the entered characters of a line are sequentially stored and a series of editing functions to have the entered characters directly printed in editing form and a permanent, alterable memory wherein are recorded positioning information for the disk and constant phrases to be printed can be recorded and recalled upon request of the operator. Justification of a line is commanded by a selector which allows the printing of entered characters up to a set zone of the printing line while stores, without printing, the remaining characters on the line buffer. Following actuation of a service key causes the delayed printing of stored part of the line aligned to the fixed right margin.

Abstract: Overstruck text is justified by distributing the white space residue at the end of the unjustified line among the interword spaces for justification. The amount of the residue distributed is used to determine a number of overstrike characters which will overstrike the text including these expanded interword spaces. This is accomplished by placing controls in the text stream during editing to delineate the text to be overstruck. Before printing, these controls in the edited data stream are detected to cause the print line to be first justified by expansion of interword spaces and then followed by overstriking with the appropriate number of overstrike characters determined during the justification process.

Abstract: A system for first justifying a text line according to a system minimum escapement unit, and then rejustifying the line according to a minimum escapement unit for a printer which is to be utilized in printing the line. The first justification of the line is in a normal manner. That is, any residue is divided by the number of word spaces on the line to obtain a quotient and any remainder. The extent of word space expansion is then the value of the quotient plus the remainder until exhausted. Rejustification for the printer being utilized is accomplished by dividing each system justified word space size by the printer minimum escapement unit to obtain a new quotient and remainder. Each system justified word space is then converted to a value including the obtained quotient for each space, and the remainders for all spaces are accumulated for adding to the first word space.