Magnetic recording apparatus with adjustable line density

Claim 2

Apparatus for forming latent images in a magnetic printing apparatus comprising: a. A recording head having therein a plurality of channels of different widths as measured in the main scanning direction, wherein the tracking locus of each of said different width channels corresponds to a different number of lines in the sub-scanning direction; b. Recording head control means for selecting and driving at least two channels of different widths such that the line-recorded altent images of a wider track are reduced in width by a subsequently recorded latent images of a succeeding narrower channel which overlaps an edge portion of said wider channel, thereby to provide data tracks in the sub-scanning direction which are of substantially equal width as measured in the main scanning direction, and without unrecorded line space therebetween.

Claim 3

Apparatus according to claim 1 wherein at least some of the spacings between centers of individual channels in said plural-channel recording head are unequal.

Claim 4

Apparatus according to claim 2 wherein means are provided for selecting one of a plurality of available line densities by selecting at least two channels out of a larger number of channels.

Claim 5

Apparatus according to claim 2 wherein memory means are provided for retaining in memory the latent image signals of a wider channel until after the latent image signals of a succeeding narrower channel has been recorded.

Claim 6

Apparatus for forming latent images in a magnetic printing apparatus comprising: a. a recording head having more than two channels, said recording head being so constructed that the sub-scanning tracking width of each channel as measured in the main scanning direction is different from the tracking width of each other channel, said channels being of such track width and so spaced that a subsequent recording of a narrower channel overlaps an edge portion of a previous recording of a wider channel, resulting in channels of substantially equal width without unrecorded line gap therebetween; b. a scanning-line-density setting means; c. a memory selector for receiving data to be recorded; d. means using said scanning-line-density setting means to control said memory selector; e. a plurality of memories for storing data; f. means connecting the output of said memory selector to said plurality of memories; g. a memory controller; h. means for applying signals from said scanning-line-density-setting apparatus to said memory controller; i. means using said memory controller to read out data stored in said plurality of memories; j. means applying signals from said scanning-line density setting apparatus to said head selector; and k. means connecting said memories to said head selector for selecting at least two channels in accordance with signals received from said scanning-line-density setting apparatus, whereby stored data from said memories is sent to a selected channel in said recording head.

Claim 7

Apparatus for forming latent images in a magnetic printing apparatus comprising: a. a recording head having more than two channels, said recording head being so constructed that the sub-scanning tracking width of each channel as measured in the main scanning direction is different from the tracking width of each other channel, said channels being of such track width and so spaced that a subsequent recording of a narrower channel overlaps an edge portion of a previous recording of a wider channel, resulting in channels of substantially equal width without unrecorded line gap therebetween; b. a scanning-line-density setting means; c. a memory selector for receiving data to be recorded; d. means using said scanning-line-density setting means to control said memory selector; e. a plurality of memories for storing data; f. means connecting the output of said memory selector to said plurality of memories; g. a memory controller; h. means for applying signals from said scanning-line-density-setting apparatus to said memory controller; i. means using said memory controller to read out data stored in said plurality of memories; j. means applying signals from said scanning-line density setting apparatus to said head selector; and k. means connecting said memories to said head selector for selecting at least two channels in accordance with signals received from said scanning-line-density setting apparatus, whereby stored data from said memories is sent to a selected channel in said recording head.

Claim 8

Apparatus according to Claim 5 including a sub-scanning controller for controlling the sub-scanning speed in accordance with signals received from said sub-scanning-line-density setting apparatus.

Claim 9

Apparatus for forming latent images in a magnetic printing apparatus, said apparatus comprising: a. a recording head having a plurality of channels with different tracking widths; b. means recording latent images along a locus having a wide tracking width; c. means subsequently recording latent images along another locus having a narrow tracking width which partly overlaps the locus of the preceding wide track channel, said width of locus described by said preceding wide track channel being so corrected by said subsequent recording as to become nearly equal to the tracking width of said succeeding narrow width channel, the overlap portion of said wide track locus being rewritten into said succeeding channel.

Claim 10

Apparatus for forming latent images in a magnetic printing apparatus, said apparatus comprising: a. a recording head having a plurality of channels with different tracking widths; b. means recording latent images along a locus having a wide tracking width; c. means subsequently recording latent images along another locus having a narrow tracking width which partly overlaps the locus of the preceding wide track channel, said width of locus described by said preceding wide track channel being so corrected by said subsequent recording as to become nearly equal to the tracking width of said succeeding narrow width channel, the overlap portion of said wide track locus being rewritten into said succeeding channel.

Claim 11

Apparatus for forming latent images in a magnetic printing apparatus, said apparatus including: a. a memory selector for receiving the data to be recorded; b. a plurality of memories having a number of channels for receiving the data stored in said memory selector for subsequent supply to said channel; c. a plurality of recording heads corresponding to said channels for receiving the data stored in each memory; d. each of said recording head having a multiplicity of channels having different tracking widths; e. means for so recording the latent images that the recording in a wide tracking channel precedes the recording in a succeeding narrow width channel; f. control means for controlling the movement of said recording head and the recording of latent images in such manner that an edge portion of the locus described by a preceding channel is overlapped by an edge portion of the locus recorded by a succeeding channel.

Claim 12

Apparatus for forming latent images in a magnetic printing apparatus, said apparatus including: a. a memory selector for receiving the data to be recorded; b. a plurality of memories having a number of channels for receiving the data stored in said memory selector for subsequent supply to said channel; c. a plurality of recording heads corresponding to said channels for receiving the data stored in each memory; d. each of said recording head having a multiplicity of channels having different tracking widths; e. means for so recording the latent images that the recording in a wide tracking channel precedes the recording in a succeeding narrow width channel; f. control means for controlling the movement of said recording head and the recording of latent images in such manner that an edge portion of the locus described by a preceding channel is overlapped by an edge portion of the locus recorded by a succeeding channel.